CPC Definition - Subclass A61B

Last Updated Version: 2019.02
DIAGNOSIS; SURGERY; IDENTIFICATION (analysing biological material G01N, e.g. G01N 33/48; obtaining records using waves other than optical waves, in general G03B 42/00)
Definition statement

This place covers:

Apparatus, instruments, implements, or processes that are either specially adapted or intended to be solely utilized for evaluating, examining, measuring, monitoring, studying, or testing particular characteristics and aspects of either living or dead human and animal bodies for medical purposes (i.e., diagnosis). Diagnosis consists of scrutinizing the following characteristics or aspects of bodies:

  • internal or external portions of the bodies (e.g., lungs),
  • abnormal bodily conditions (e.g., sickness, broken bones, detecting foreign bodies, pregnancy),
  • mental conditions (e.g., psychotechniques), and
  • bodily functions (e.g., heart beat, vision).

Apparatus, instruments, implements, or processes that are either specially adapted or intended to be solely utilized for medical procedures employing physical actions (e.g., laser cutting, pressure of fluid) on portions of human or animal bodies to correct, enhance, or inspect (e.g., autopsies) them for medical purposes (i.e., surgery). Surgery consists of the following medical procedures:

  • repositioning (e.g. aligning broken bones, opening wounds) parts of bodies,
  • stabilizing (e.g., inserting bone pins) to prevent harmful movement of parts of bodies,
  • repairing (e.g., fastening skin together, removing cancerous tissue) bodies,
  • facilitating the occurrence of naturally occurring bodily functions (e.g., child birth, passing kidney stones) that are out of the ordinary,
  • introducing, collecting, or removing cells and organs (e.g., inseminations, tissue sampling, hair transplants, skin grafting, biopsies, organ harvesting) to or from bodies, and
  • introducing or taking out foreign objects (e.g., replacement heart valves, bullets) to or from bodies.

Apparatus, instruments, implements, or processes that are either specially adapted or intended to be solely utilized in procedures for identifying individual human beings (e.g., finger printing, by recognition of shape or dimension of body part) using unique characteristics of their bodies (i.e. identification).

Adjunct or supplementary means specially adapted for use in, or intended for exclusive use in, diagnosis, surgery, or identification. These adjunct or supplementary means contribute to the effectiveness (e.g., surgical drapes) or safety (e.g., operating gloves) of a medical procedure, but may or may not (e.g., protective covers for scalpels) themselves involve any direct contact with a body.

Components of diagnosis, surgery, or identification means with structural features limiting their usefulness to medical procedures.

Relationships with other classification places

Several subclasses provide for subject matter that is used for 'diagnosis'. The relationship between these subclasses with regard to the type of 'diagnosis' covered by each is as follows:

Subclass A61B provides for diagnosis in general. A61B also provides for any surgical or identification apparatus or methods when

  • the apparatus or methods are combined with diagnosis means or
  • the apparatus can be used for diagnosis and either surgery or identification.

A61B additionally provides for any diagnostic apparatus or methods combined with therapy apparatus or method normally covered by subclass A61H or A61N when

  • the same apparatus or methods are used for both purposes or
  • combined together but only useable separately.

Subclass A61H provides for diagnostic means or steps that are combined with massage and physical therapy apparatus or methods used for the treatment of disease or disability (i.e., an abnormal condition of the body) by utilization of direct mechanical energy; when the diagnostic means or step is used solely for operational feedback purposes to enhance therapy.

Subclass A61N provides for diagnostic means or steps that are combined with medical treatment therapy apparatus or methods used for the treatment of disease or disability by utilization of forms of energy other than direct mechanical energy; when the means or step is used solely for operational feedback purposes to enhance therapy.

References
Limiting references

This place does not cover:

Tools or instruments for operating on the mouth portion of a human being (e.g., tooth saws)

A61C 3/00

Saliva removers combined with instruments for opening or keeping open the mouth (e.g., mouth props, tongue guards, tongue depressors, cheek spreaders)

A61C17/10

Medical instruments, implements, tools, or methods specially adapted so as to limit their usefulness to only animals

A61D

Methods or devices for treatment of eyes, putting in contact lenses, or correcting squinting

A61F 9/00

Eye surgery

A61F 9/007

Ear surgery

A61F 11/00

Physical therapy apparatus that includes diagnostic feedback means for influencing operation

A61H

Syringes and suction, pumping or atomizing devices for medical use (e.g. cups, breast relievers, irrigators, sprays, powder insufflators, atomizers, inhalers), apparatus for general or local anesthetics, devices or methods for causing a change in the state of consciousness, catheters, dilators, and apparatus for introducing medicines into the body other than orally

A61M

Non-surgical treatment of medical conditions or physical injuries by utilization of forms of energy not directly generated by mechanical apparatus, devices, or means that includes diagnostic feedback means for influencing its operation

A61N

Clinical thermometers for measuring the temperature of body parts

G01K 5/00

Methods or arrangements for reading or recognizing patterns, e.g. fingerprints

G06K 9/00

Recognizing, identifying, or verifying the identity of human beings by analyzing their voice or speech

G10L 17/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Operating tables and auxiliary devices for these tables

A61G 13/00

Operating chairs

A61G 15/00

Apparatus for artificial respiration or heart stimulation

A61H 31/00

Containers specially adapted for medical or pharmaceutical purposes

A61J 1/00

Devices for administering medicines orally

A61J 7/00

Materials for surgical sutures or for ligaturing blood vessels

A61L 17/00

Surgical adhesives or cements and adhesives for colostomy devices

A61L 24/00

Materials for colostomy devices

A61L 28/00

Measuring or testing processes involving enzymes or microorganisms

C12Q 1/00

Analyzing samples of biological material

G01N

Special rules of classification

The following IPC groups are not used in the internal ECLA classification scheme. Subject matter covered by these groups is classified in the following ECLA groups:

A61B 5/0295

covered by A61B 5/026

A61B 5/151

covered by A61B 5/1411

A61B 5/153

covered by A61B 5/1405

A61B 5/154

covered by A61B 5/1438

A61B 5/157

covered by A61B 5/00

A61B17/03

covered by A61B 17/00

A61B17/125

covered by A61B 17/122

A61B17/138

covered by A61B 17/12

A61B17/76

covered by A61B 17/74

A61B 2017/90

covered by A61B 17/88

A61B17/94

covered by A61B 17/29

Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes (examination of body cavities or body tracts using ultrasonic, sonic or infrasonic waves A61B 8/12; instruments, e.g. endoscopes, for taking a cell sample A61B 10/00; endoscopic cutting instruments A61B 17/32; surgical instruments using a laser beam being directed along or through a flexible conduit A61B 18/22; technical endoscopes G02B 23/24); Illuminating arrangements therefor (for the eyes A61B 3/00)
References
Limiting references

This place does not cover:

Illuminating arrangements for the eyes

A61B 3/00

Examination of body cavities or body tracts using ultrasonic, sonic or infrasonic waves

A61B 8/12

Instruments, e.g. endoscopes, for taking a cell sample

A61B 10/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Optical probes as there is no visual/image channel

A61B 5/0059

Endoscopic cutting instruments

A61B 17/32

Surgical instruments using a laser beam being directed along or through a flexible conduit

A61B 18/22

Catheters, e.g. flexible tubes

A61M 25/00

Industrial endoscopes, e.g. borescopes; optical details thereof, e.g. particularly lens and optical fibre details

G02B 23/24

Special rules of classification

A61B 1/00 - A61B 1/127 deal with technical features of endoscopes. From A61B 1/227 - A61B 1/32 endoscopes are classified according to the body cavity where they are intended to be used.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Rod-lens

A number of glass rods with specially shaped ends, that are used in rigid endoscopes instead of several thin glass lenses to improve image transmission properties and widen the field of view

{Operational features of endoscopes}
Definition statement

This place covers:

Operational signal transmission and data processing related with endoscopes if not provided in other, more specific technical fields.

{of image signals (G06T takes precedence)}
Definition statement

This place covers:

Operational image processing for display during use of the endoscope, e.g. on-chip or by the camera control unit.

References
Limiting references

This place does not cover:

Processing or analysis of bit-mapped images

G06T

{using wireless means}
Definition statement

This place covers:

Wireless data transmission between probe within the body and external receiver.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Endoradiosondes

A61B 5/07

{using electrical cables}
Definition statement

This place covers:

Wire based data transmission by electrical signals.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrical cables as such

A61B 1/00114

{removable}
Definition statement

This place covers:

Exchangeable memory like memory cards, e.g. for image recording or changing endoscope function.

{internally powered}
Definition statement

This place covers:

Power source integral with the endoscope, e.g. batteries.

{Means for power saving, e.g. sleeping mode}
Definition statement

This place covers:

  • Power saving features, e.g. in capsule endoscopes or displays
  • Sleep/stand-by modes or varying sampling/transmission rates.
{provided with data input arrangements for the user}
Definition statement

This place covers:

All types of user input/interface means, e.g. keyboards, touch screens, joysticks, remote controls, voice-activated.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Deflection control handles

A61B 1/0052

{for user message recording}
Definition statement

This place covers:

Recording user/operator message during operation of endoscope, e.g. record annotation with image.

{Constructional features of the display}
Definition statement

This place covers:

Display construction, e.g. portable, head mounted displays, supports for displays.

{for multiple images}
Definition statement

This place covers:

Display of images obtained by endoscopes, combinations of images, e.g. side-by-side, superimposed, tiled etc., combination of images and other data, e.g. graphs, ECG curves, pulse waveforms, alphanumeric data.

{positioned at proximal end of the endoscope body}
Definition statement

This place covers:

Small display screen at the proximal end of the endoscope shaft, e.g. mounted on the handle.

{for alerting the user}
Definition statement

This place covers:

Alerting/indicating to user of an operative condition/fault, e.g. by voice synthesiser, indicator lights. Includes physiological parameter of patient during endoscopic examination.

{provided with means for testing or calibration}
Definition statement

This place covers:

All types of endoscope testing, e.g. optical performance, leak detection. Testing operation of endoscope, fault detection.

{provided with identification means for the endoscope}
Definition statement

This place covers:

Endoscope provided with identification means, e.g. barcode, memory chip (ROM), coded resistor etc. May also include other data, e.g. operating data, manufacturer's serial number etc.

{provided with means for preventing overuse}
Definition statement

This place covers:

Limiting the number and/or duration of uses of an endoscope, e.g. by a counter/timer. Also limiting use to one patient by configuring endoscope to patient ID. Counting usage for payment.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Identification means

A61B 1/00059

{Proximal part of endoscope body, e.g. handles (A61B 1/0052 takes precedence)}
Definition statement

This place covers:

Structural or operational features of the handle, e.g. control elements.

References
Limiting references

This place does not cover:

Control elements, e.g. on the handle for controlled bending of the shaft

A61B 1/0052

{Valve switch arrangements}
Definition statement

This place covers:

Construction of valve switches for controlling suction/water/air supply.

{Insertion part of the endoscope body (A61B 1/0055 takes precedence)}
Definition statement

This place covers:

Details of endoscope shaft/sheath construction, e.g. layers.

References
Limiting references

This place does not cover:

Constructional details of flexible insertion parts, e.g. vertebral elements

A61B 1/0055

{with externally grooved shaft}
Definition statement

This place covers:

Groove(s) on external surface of endoscope to receive additional channel(s), e.g. for tools, suction, rinsing etc.

{with stiffening means}
Definition statement

This place covers:

Details of endoscope shaft/sheath construction, including oversleeves, for stiffening.

{characterised by distal tip features}
Definition statement

This place covers:

Distal tip features not separately provided for below, e.g. distal tips with certain shapes, protective caps, strengthening means, vibrating elements, heating etc.

{Balloons}
Definition statement

This place covers:

Distal fluid inflatable balloons, e.g. for retaining endoscope in a fixed position within a body cavity or for enlarging visual field etc.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Balloon catheters

A61M 25/10 - A61M 25/1025

{Baskets}
Definition statement

This place covers:

Distal expandable basket/cage structure, e.g. for retaining endoscope at a fixed position within the body cavity or for spacing the imaging lens from the tissue surface.

{Tools (A61B 17/00234 takes precedence)}
Definition statement

This place covers:

Distal tip tool as part of, mounted on or attached to the endoscope shaft or oversleeve, e.g. for displacing/cutting tissue.

References
Limiting references

This place does not cover:

Tools for introduction through a working channel

A61B 17/00234

Informative references

Attention is drawn to the following places, which may be of interest for search:

Working channel for introduction of, e.g. surgical tools

A61B 1/018

{Hoods}
Definition statement

This place covers:

Distal hood, e.g. projecting beyond the lens/window plane, for restricting field of view.

{Nozzles}
Definition statement

This place covers:

Distal nozzles/baffles/fluid deflectors, e.g. for directing rinsing fluid on to the distal lens/window.

References
Limiting references

This place does not cover:

Tool deflectors

A61B 1/00098

{Suction openings}
Definition statement

This place covers:

Distal suction openings for removing fluid/debris; openings may be in an endoscope oversleeve.

References
Limiting references

This place does not cover:

Suction openings for propulsion

A61B 1/00156

{Optical elements}
Definition statement

This place covers:

Distal optical features, e.g. window shapes, lens arrangements, mirrors, prisms or filters arranged in the distal tip of an insertion section.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

For variation of viewing angle

A61B 1/00174

{Deflecting means for inserted tools}
Definition statement

This place covers:

Distal deflector for a tool/instrument/optical fibre introduced through an endoscope channel.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Tool/instrument channels

A61B 1/018

{designed for single use}
Definition statement

This place covers:

Disposable endoscope or endoscope parts explicitly intended for single use only and usually not sterilizable.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Prevention of overuse

A61B 1/00062

Modular construction

A61B 1/00105

{characterised by modular construction}
Definition statement

This place covers:

Modular construction of endoscope allows parts to be exchanged/replaced, e.g. different shafts used with the same handle. Also for disassembly of parts for easier cleaning. Multiple endoscopes interchangeably connected to a monitor unit.

{characterised by self-sufficient functionality for stand-alone use}
Definition statement

This place covers:

Portable endoscopes not requiring a physical connection to further supply or monitor units, e.g. including integrated power supply, light source and video controller, suction and fluid supply, telemetry and/or display means.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Wireless data transmission

A61B 1/00016

Integrated data storages

A61B 1/0002

Integrated power supply

A61B 1/00032

Integral display units

A61B 1/00052

{Manufacturing of endoscope parts}
Definition statement

This place covers:

All types of steps/processes in manufacturing / assembling endoscopes or parts thereof.

{Connection or coupling means}
Definition statement

This place covers:

All types of couplings are included here, e.g. optical, mechanical, electrical.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Medical aspects of connections

A61M 39/00

Details of coupling devices

H01R 13/00

{Electrical cables for connection to external units}
Definition statement

This place covers:

Details of electrical cables. Includes cable construction and cable arrangements.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrical conductors and cables in general

H01B

{Optical cables, e.g. for connection to an external light source}
Definition statement

This place covers:

Details of light supply cable connecting the endoscope to the light source, may also have, e.g. shutter or filters within cable. Cable may have one end permanently fixed to the endoscope or it may be completely separable from both endoscope and light source unit.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Connectors as such

A61B 1/00126

{Tubes or pipes, e.g. for fluid supply to the endoscope}
Definition statement

This place covers:

Also universal cables for combined water/air/suction supply.

{electrical, e.g. electrical plug-and-socket connection}
Definition statement

This place covers:

Details of any type of electrical connector used with endoscopes, includes connectors at the distal end of a cable projecting from the operation portion and connectors mounted on the operation portion.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrical couplings in general

H01R 13/00

{mechanical, e.g. for tubes or pipes}
Definition statement

This place covers:

Details of any type of mechanical connector used with endoscopes, includes connectors or adaptors at the proximal end of the working channel.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Forceps plugs for sealing or closing of working channels

A61B 1/00137

Surgical tool connectors

A61B 2017/00477

{Drive units, e.g. for endoscopic tools}
Definition statement

This place covers:

Drive unit for attachment to an endoscope for driving/introducing a tool/instrument. May be manual or motor driven.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Holding or positioning of the endoscope

A61B 1/00147

Guiding of flexible endoscopes as such

A61B 1/01

Operating/actuating an endoscopic tool

A61B 2017/00398

Introducing catheters

A61M 25/01

Introducing guidewires

A61M 25/09041

{Oversleeves (A61B 1/00142 takes precedence)}
Definition statement

This place covers:

Separate oversleeve tube and optical assembly. The optical assembly is inserted into the oversleeve prior to use in a body cavity. The oversleeve may have features like additional working channels for instruments, rinsing or suction channels, illumination channels or further distal tools.

References
Limiting references

This place does not cover:

Sanitary sheaths for hygiene mainly

A61B 1/00142

Informative references

Attention is drawn to the following places, which may be of interest for search:

Guide tubes to aid endoscope insertion

A61B 1/00154

Guiding flexible endoscopes

A61B 1/01

Synonyms and Keywords

In patent documents, the word/expression in the first column is often used instead of the word/expression in the second column, which is used in the classification scheme of this place:

"sheath"

"oversleeve"

{End pieces, e.g. caps, seals, forceps plugs}
Definition statement

This place covers:

For closing or sealing openings at both ends of an endoscope, e.g. forceps plugs for the proximal end of a working channel.

{Fastening elements for attaching accessories to the outside of an endoscope shaft, e.g. clips, clamps or bands}
Definition statement

This place covers:

Any type of fastening element to attach an accessory/tool/channel to the outside of the endoscope shaft, e.g. clip, clamp, loop, band.

{with means for preventing contamination, e.g. by using a sanitary sheath}
Definition statement

This place covers:

Prevention of contamination with bodily fluids of a patient, e.g. by a hygienic sheath covering the insertion tube of an endoscope.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Oversleeves or sheaths not mainly for hygiene, but comprising additional technical features like working channels

A61B 1/00135

Drapes for protection of surgical instruments

A61B 46/10

{Hygienic packaging}
Definition statement

This place covers:

Packages for keeping endoscope sterile before use/in storage.

{Holding or positioning arrangements}
Definition statement

This place covers:

Means for holding and/or changing the position (advancing, rotating, pivoting etc.) of an endoscope with respect to the patient/cavity.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Locating endoscope position inside of the body

A61B 5/06

Tracking endoscopes with NMR

G01R 33/285

{using articulated arms}
Definition statement

This place covers:

Articulated arms for holding and positioning an endoscope.

{using everted tubes}
Definition statement

This place covers:

Propelling/advancing endoscope by everted tube means, e.g. by turning the tube inside out.

{using guide tubes}
Definition statement

This place covers:

Guide tubes are positioned at the opening of a body cavity to aid insertion of the endoscope through the guide tube and into the cavity. The guide tubes are usually not fixed or attached to the endoscope shaft.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Oversleeve to cover an endoscope prior to insertion

A61B 1/00135

Guiding arrangements for flexible endoscopes

A61B 1/01

Access ports for surgical instruments

A61B 17/3421

{using self propulsion}
Definition statement

This place covers:

Probe operating inside the body without physical contact with the external environment.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Capsule endoscopes

A61B 1/041

{using magnetic field}
Definition statement

This place covers:

The probe, e.g. a capsule endoscope, is guided by a magnetic field controlled by the operator. Also for controlled bending of endoscope insertion tube by magnetic forces.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Determining endoscope position using magnetic field

A61B 5/062

Manipulators for magnetic surgery

A61B 34/73

{using motor drive units}
Definition statement

This place covers:

Drive unit, e.g. proximal motor, for insertion of an endoscope into the body.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Drive unit for introduction of an endoscopic tool into the endoscope

A61B 1/00133

Pumps for everted tubes

A61B 1/00151

Guiding arrangements for flexible endoscopes in general

A61B 1/01

Introducing catheters

A61M 25/01

Introducing guidewires

A61M 25/09041

{Optical arrangements (A61B 1/002, A61B 1/06 take precedence)}
Definition statement

This place covers:

Details of optical arrangements for transmitting image within the endoscope not covered by any lower ranking class. Includes jointed image paths using mirrors/prisms.

References
Limiting references

This place does not cover:

Rod-lens arrangements

A61B 1/002

Illuminating arrangements

A61B 1/06

Informative references

Attention is drawn to the following places, which may be of interest for search:

Distal optical elements

A61B 1/00096

{with light-conductive means, e.g. fibre optics (A61B 1/07 takes precedence)}
Definition statement

This place covers:

Guiding light from distal to proximal end of the endoscope, not limited to imaging.

References
Limiting references

This place does not cover:

Guiding in particular illumination light from proximal to distal end of the endoscope

A61B 1/07

Informative references

Attention is drawn to the following places, which may be of interest for search:

Light guides per se

G02B 6/00

Light guides for industrial endoscopes

G02B 23/26

{Details of optical fibre bundles, e.g. shape or fibre distribution}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Optical fibre arrangements for illumination

A61B 1/07

{Details of single optical fibres, e.g. material or cladding}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Optical fibres for illumination

A61B 1/07

{with means for scanning}
Definition statement

This place covers:

2D/3D scanning of illumination and/or imaging light beams.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Distal mechanical or optical elements

A61B 1/0008

Optical coherence tomography

A61B 5/0066

Confocal scanning

A61B 5/0068

Optical scanning systems in general

G02B 26/10

{characterised by the viewing angles}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Distal optical features in general

A61B 1/00096

Detachable distal elements

A61B 1/00101

{for 90 degrees side-viewing}
Definition statement

This place covers:

Optical element at distal end of endoscope allows side-viewing.

{for off-axis viewing}
Definition statement

This place covers:

Optical element at distal end of endoscope sets the field-of-view at an angle to the longitudinal axis of the endoscope i.e. between 0-90 degrees, in forward or rearward direction.

{for multiple fixed viewing angles (A61B 1/00193 takes precedence)}
Definition statement

This place covers:

Optical elements allow multiple different fixed views, e.g. combining either alternative or simultaneous 0 degree frontal and 90 degrees side-viewing.

References
Limiting references

This place does not cover:

Stereoscopic viewing

A61B 1/00193

{for variable viewing angles}
Definition statement

This place covers:

Optical element at distal end of endoscope allows variable field of view, e.g. by rotation or deflection of a distal optical element.

{with imaging filters}
Definition statement

This place covers:

Filters in the optical imaging path of an endoscope.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Filters in the optical illumination path of an endoscope

A61B 1/0646

{with focusing or zooming features}
Definition statement

This place covers:

Optical and/or mechanical arrangements for adjusting the focal point or magnification of an endoscope, e.g. for auto-focus or endo-microscopy.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Confocal scanning

A61B 5/0068

{characterised by variable lenses}
Definition statement

This place covers:

Lens with variable refractive properties, e.g. fluid filled lens, Alvarez lens.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Variable lenses as such

G02B 3/14

{adapted for stereoscopic vision}
Definition statement

This place covers:

Stereoscopic or three dimensional imaging, e.g. by combining images from two laterally spaced cameras.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Stereoscopic vision for industrial endoscopes

G02B 23/2415

{with eyepieces}
Definition statement

This place covers:

Features of the eyepiece, e.g. lens arrangement, attachment to endoscope shaft/camera etc. Includes binocular eyepieces.

{characterised by multiple eyepieces}
Definition statement

This place covers:

Multiple eyepieces allowing more than one observer to view the image.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Binocular eyepieces

A61B 1/00195

having rod-lens arrangements (A61B 1/055 takes precedence)
References
Limiting references

This place does not cover:

Rod-lens arrangements in combination with a camera

A61B 1/055

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Rod lens" and "Hopkins optics"
Flexible endoscopes
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Catheters without visualisation

A61M 25/00

{with controlled bending of insertion part}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Tip steering of catheters

A61M 25/0133

Articulated or flexible manipulators

B25J 1/02

Crawling robots for pipe lines

F16L 55/28, F16L 55/34

{Constructional details of control elements, e.g. handles}
Definition statement

This place covers:

Operating elements for active control of bending, e.g. mechanical levers, dials or pulleys, but also electrical switches usually mounted on the handle.

References
Limiting references

This place does not cover:

Controlled bending of the insertion part using shape memory elements

A61B 1/0058

Informative references

Attention is drawn to the following places, which may be of interest for search:

Endoscope handles in general

A61B 1/00066

Force transmission elements, e.g. control wires

A61B 1/0057

{Constructional details of insertion parts, e.g. vertebral elements}
Definition statement

This place covers:

Backbone elements repetitively aligned and movably connected to each other to provide stability and flexibility to the insertion tube.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Articulations

A61B 1/008

{Constructional details of force transmission elements, e.g. control wires}
Definition statement

This place covers:

Operating elements for transmission of forces for the purpose of e.g. bending, flexing, twisting, pivoting or rotation of a flexible portion of the insertion tube.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Control elements, e.g. on the handle

A61B 1/0052

Articulations

A61B 1/008

Articulations
Definition statement

This place covers:

Means for interconnecting (rigid) backbone elements of the shaft to provide flexibility, e.g. hinges, joints or pivots.

References
Limiting references

This place does not cover:

Constructional details of insertion parts as such

A61B 1/0055

Guiding arrangements therefore
Definition statement

This place covers:

Guiding means, which are independent from the flexible endoscope and its integrated tip steering mechanisms, e.g. guide wires or insertion aids.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Guide tubes

A61B 1/00154

Guiding arrangements for catheters

A61M 25/01

{Endoscope within endoscope}
Definition statement

This place covers:

Combination of at least 2 endoscopes, where one endoscope is introduced into the body cavity, e.g. by passing it through a channel of another endoscope.

Control of fluid supply or evacuation
Definition statement

This place covers:

Controlling fluid supply or evacuation to or from cavities of the human body.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Fluid supply or evacuation to distal balloons

A61B 1/00082

Fluid supply or evacuation for cleaning purposes post-use

A61B 1/121

Fluid supply or evacuation for cleaning purposes in-use

A61B 1/126

for receiving instruments
Definition statement

This place covers:

All kind of working channels for insertion of medical instruments thought the endoscope shaft, e.g. for minimally invasive surgery.

combined with photographic or television appliances {(camera adapters G03B 17/48)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Camera adapters

G03B 17/48

Television cameras

H04N 5/225

{Capsule endoscopes for imaging}
Definition statement

This place covers:

Small mostly capsule type cameras, usually but not necessarily swallowed for minimally invasive visual documentation e.g. of the gastroenterologic tract or blood vessels. Often in combination with miniaturized on-board diagnostic or therapeutic tools.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Wireless transmission of control or image signals

A61B 1/00016

Internal power supply, e.g. by batteries

A61B 1/00032

Capsule type diagnostic sensors without visualization

A61B 5/07

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Capsule endoscope" and "Pill camera"
{characterised by a proximal camera, e.g. a CCD camera}
Definition statement

This place covers:

Endoscopic cameras integrated into or detachably fixed to the proximal end of an endoscope.

References
Limiting references

This place does not cover:

Cameras in the distal end portion of an endoscope

A61B 1/05

Informative references

Attention is drawn to the following places, which may be of interest for search:

Image processing e.g.

G06T 7/0012

Details of the TV cameras

H04N 5/225

{for fluorescence imaging}
Definition statement

This place covers:

Visual imaging of tissue fluorescence induced e.g. by exogenously administered fluorophores or endogenous autofluorescence.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Filters in the imaging path

A61B 1/00186

Monochromatic illumination

A61B 1/063

Polychromatic illumination

A61B 1/0638

Filters in the illumination path

A61B 1/0646

Detection of tissue fluorescence not resulting in an image

A61B 5/0059

{Details of CCD assembly}
Definition statement

This place covers:

Details of mounting the CCD chip in the distal tip of the endoscope.

with illuminating arrangements
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Illumination arrangements for industrial endoscopes

G02B 23/2461

{for annular illumination}
Definition statement

This place covers:

Illumination arrangements where light exits the endoscope forwardly in multiple points or circularly, including illumination sources for the oral cavity not incorporated in the endoscope shaft.

{for radial illumination}
Definition statement

This place covers:

Illumination arrangements where light exits the endoscope radially (perpendicularly to the longitudinal axis). Single or multiple illumination ports.

{for off-axis illumination}
Definition statement

This place covers:

Illumination of cavity at an angle to the longitudinal axis of the endoscope other than at 90 degrees.

{for monochromatic illumination}
Definition statement

This place covers:

  • Lasers or laser diodes
  • Quasi-monochromatic light sources like narrow-band filtered lamps.
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Illumination filters

A61B 1/0646

{providing two or more wavelengths}
Definition statement

This place covers:

Illumination with multiple spectral bands, e.g. for fluorescence endoscopy.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Fluorescence spectroscopy without visual imaging

A61B 5/0071 or G01N 21/64

{with illumination filters}
Definition statement

This place covers:

Optical filters provided in the illumination path of the endoscope, e.g. for fluorescence endoscopy.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Filters in the optical imaging path of an endoscope

A61B 1/00186

{with wavelength conversion}
Definition statement

This place covers:

Endoscope comprising one or several light source(s), e.g. semiconductor light source or LEDs, that illuminate(s) a fluorescent material, e.g. phosphor, to emit light at a different wavelength than the exciting light.

{Endoscope light sources}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Lightning devices in general

F21L

{at proximal end of an endoscope}
Definition statement

This place covers:

External or internal light sources coupled to or positioned at the proximal end of an endoscope for illumination.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Cables to couple a light source to an endoscope

A61B 1/00117

Connectors to couple a light source to an endoscope

A61B 1/00126

{head mounted}
Definition statement

This place covers:

Headlamps, e.g. used for dental or ENT applications.

using light-conductive means, e.g. optical fibres
Definition statement

This place covers:

Guiding illumination light from proximal to distal end of the endoscope.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Guiding light from distal to proximal end of the endoscope, not limited to imaging

A61B 1/00165

Details of optical fibre bundles

A61B 1/00167

Details of single optical fibre structure

A61B 1/0017

Light guides per se

G02B 6/00

Light guides for illumination in industrial endoscopes

G02B 23/2469

with cooling or rinsing arrangements
Definition statement

This place covers:

Fluid supply or evacuation for functional purposes of the endoscope.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Fluid supply or evacuation to or from cavities of the human body

A61B 1/015

{provided with means for cleaning post-use}
Definition statement

This place covers:

Cleaning, e.g. physically, of endoscopes and/or parts thereof after use.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Cleaning of endoscopes in-use

A61B 1/126

Cleaning of surgical instruments

A61B 90/70

Cleaning of dental instruments

A61C 19/002

Disinfection or sterilisation

A61L 2/00

Cleaning of hollow articles in general

B08B 9/00

{using cleaning tools, e.g. brushes}
Definition statement

This place covers:

Tools for cleaning endoscopes after use, e.g. cleaning swabs or brushes inserted into endoscope channel.

{using washing machines}
Definition statement

This place covers:

Washing machines specially adapted for cleaning endoscopes.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Disinfection or sterilisation

A61L 2/00

{using fluid circuits}
Definition statement

This place covers:

Fluid circulation in the endoscope during endoscope cleaning cycle.

{provided with means for cleaning in-use}
Definition statement

This place covers:

Active cleaning of endoscope parts during use, e.g. of distal windows to maintain vision.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Distal nozzles

A61B 1/00091

Cleaning of endoscopes post-use

A61B 1/121

{with means for preventing fogging (A61B 1/253 takes precedence)}
Definition statement

This place covers:

Prevention of fogging, e.g. by dedicated covers or coatings.

References
Limiting references

This place does not cover:

Active cleaning of endoscopes in-use

A61B 1/126

Means for preventing fogging of dentists mirrors

A61B 1/253

{provided with means for regulating temperature}
Definition statement

This place covers:

Monitoring/controlling/regulation of temperature in an endoscope (shaft or handle) and related units like proximal light sources.

for the mouth, i.e. stomatoscopes, e.g. with tongue depressors (tongue depressors per se A61B 13/00); Instruments for opening or keeping open the mouth (combined with saliva removers A61C 17/00; mouth openers for animals A61D 15/00)
References
Limiting references

This place does not cover:

Light based diagnosis of oral or dental tissue

A61B 5/0088

Informative references

Attention is drawn to the following places, which may be of interest for search:

Tongue depressors per se

A61B 13/00

Combined with saliva removers

A61C 17/00

Mouth openers for animals

A61D 15/00

Devices for opening or enlarging the visual field, e.g. of a tube of the body (dilators A61M 29/00)
Definition statement

This place covers:

Devices for enlarging natural openings of the human body for visual inspection, e.g. specula or the like.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Tractors for holding wounds open

A61B 17/02

Surgical trocars for introduction into natural body openings

A61B 2017/345

Dilators

A61M 29/00

Apparatus for testing the eyes; Instruments for examining the eyes (eye inspection using ultrasonic, sonic or infrasonic waves A61B 8/10; devices for treatment of the eyes A61F 9/00; exercisers for the eyes A61H 5/00; optical systems in general G02B)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Eye inspection using ultrasonic, sonic or infrasonic waves

A61B 8/10

Devices for treatment of the eyes

A61F 9/00

Exercisers for the eyes

A61H 5/00

Optical systems in general

G02B

Spectacles and contact lenses

G02C

Special rules of classification

A61B 3/02 - A61B 3/09 for subjective testing i.e. with patient feedback and A61B 3/10 - A61B 3/158 for objective testing i.e. without patient feedback

The breakdown symbols (i.e. the non "parallel" or non "mirror" symbols) and "orthogonal" symbols are to be used for classifying the invention information (in addition to the invention symbols) in case the invention is insufficiently classified by an invention information symbol. They are also to be used for classifying the additional information. They are stored in the additional information field.

{provided with illuminating means (A61B 3/117 takes precedence; goniolenses used for laser treatment A61F 9/009; illuminating means for optical instruments G02B 27/00)}
Definition statement

This place covers:

Illuminating means for examining the eyes (not related to a specific measuring instrument)

media0.png

References
Limiting references

This place does not cover:

Illumination for examining the anterior chamber or the anterior chamber angle

A61B 3/117

Illumination for objective testing apparatus

A61B 3/14

Informative references

Attention is drawn to the following places, which may be of interest for search:

Goniolenses used for laser treatment

A61F 9/009

Illuminating means for optical instruments

G02B 27/00

{characterised by electronic signal processing, e.g. eye models}
Definition statement

This place covers:

Use of any type of eye model, e.g. to aid in measurement of visual function or checking correct prescription of corrective lens.

media1.png

Determination of parameters of contact lenses or of intraocular lenses on the basis of ophthalmic measurements

Correlation of eye images taken at different times

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Planning of eye laser surgery

A61F 2009/00878

Computer processing of eye images

G06T 2207/30041

Medical models

G09B 23/28

{characterised by user input arrangements}
Definition statement

This place covers:

All types of user input/interface means, e.g. particular keyboard/switch layouts, control desks/panels, voice-controlled, light pen, touch screen, joysticks, cursors etc.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Adjusting devices, e.g. operated by control lever

A61B 3/0075

{Constructional features of the display}
Definition statement

This place covers:

Display construction, e.g. portable, supports for displays.

{for multiple images}
Definition statement

This place covers:

Display of images obtained by all types of apparatus in A61B 3/00, combinations of images, e.g. side-by-side, superimposed, tiled etc., combination of images and/or other data, e.g. graphs, waveforms, alphanumeric data, questionnaires, patient reports etc.

{with identification means for the apparatus}
Definition statement

This place covers:

Identification of apparatus or component parts of the apparatus by any means, e.g. RFID, bar code, coded resistors, EPROM etc.

{provided with adjusting devices, e.g. operated by control lever (manipulators B25J)}
Definition statement

This place covers:

Control levers for ophthalmic apparatus

media2.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Manipulators as such

B25J

{provided with means for patient positioning}
Definition statement

This place covers:

Means for positioning of a patient with respect to apparatus, e.g. head-rests, chin-rests, seats etc. Adjustable positioning, e.g. sliding elements or motor driven structures.

{Fixation targets for viewing direction}
Definition statement

This place covers:

Details or arrangements of fixation targets or lights.

media3.png

The fixation light 16 includes a plurality of LEDs arranged in a lattice shape. By lighting one LED, the fixation light 16 can guide a sight line of the subject's eye E to a direction of the LED lighting.

Also to relax the accommodation power

{for testing contrast sensitivity}
Definition statement

This place covers:

Examination or measurement of the contrast sensitivity of the eye.

for determining the visual field, e.g. perimeter types
Definition statement

This place covers:

Determining the field of vision

media4.png

Devices for presenting test symbols or characters, e.g. test chart projectors (A61B 3/036 takes precedence)
References
Limiting references

This place does not cover:

For testing astigmatism

A61B 3/036

Trial frames; Sets of lenses for use therewith (lenses per se G02C 7/02)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Ophthalmic lenses per se

G02C 7/02

Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
Definition statement

This place covers:

Measurements on the eye without the patient's feedback.

Besides the below-listed fields, the following is included:

  • detect the features (e.g., position, fitting) of a contact lens or an intraocular lens
  • examining the eyelid
  • evaluate a contrast agent on the eye surface
  • fluorescence examination
  • scanning laser ophthalmoscope
  • examination of light scattering
{for measuring distances inside the eye, e.g. thickness of the cornea (A61B 3/11 takes precedence)}
References
Limiting references

This place does not cover:

For measuring interpupillary distance or diameter of pupils

A61B 3/11

{for examining the tear film}
Definition statement

This place covers:

Measurement of any quantity related to tear secretion or tear film production, e.g. volume, flow, or film thickness.

Synonyms and Keywords

In patent documents, the following words/expressions are often used with the meaning indicated:

Examining

Measuring.

{for wavefront analysis}
Definition statement

This place covers:

Measuring optical aberrations of the eye or corneal topography with wavefront sensor.

media5.png

Synonyms and Keywords

wavefront sensor, Hartmann sensor, shack sensor, lenslet array, microlens array

{for optical coherence tomography [OCT]}
Definition statement

This place covers:

By optical coherence tomography, also in combination and sharing optical components with scanning laser ophthalmoscopy.

media6.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Optical coherence tomography of body tissue in general

A61B 5/0066

Optical coherence tomography as such

G01N 21/4795

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "optical coherence tomography", "OCT", "OCDR", "optical coherence domain relectometry", "optical coherence imaging", "low coherence interferometry" and "partial coherence tomography"
{for confocal scanning}
Definition statement

This place covers:

Scanning the eye wherein a detector receives only the reflected light focussed on a single point in the eye tissue, e.g. cornea or retina.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Confocal scanning of body tissue in general

A61B 5/0068

for determining refraction, e.g. refractometers, skiascopes
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Wavefront analyzer

A61B 3/1015

Intraocular lenses

A61F 2/16

Eye surgery

A61F9/01

Lenses

G02B 7/02

Contact lenses

G02B 7/04

Spectacles

G02C

{for measuring astigmatism (testing astigmatism A61B 3/036)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Computation of astigmatism based on input values

A61B 3/0025

Testing astigmatism

A61B 3/036

Special rules of classification

This field mostly relates to processing of ophthalmic data in order to estimate astigmatism.

for determining the shape or measuring the curvature of the cornea
Definition statement

This place covers:

Measurement of corneal topography.

E.g. by projecting a light pattern (moiré, placido rings) on the cornea

Examination of limbus

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Wavefront analyzer

A61B 3/1015

Examination of anterior and posterior chambers

A61B 3/117

Eye surgery

A61F9/01

Measuring curvature by projecting a pattern

G01B 11/25

{for measuring interpupillary distance}
Definition statement

This place covers:

Measurement of interpupillary distance in the context of diagnostic procedures.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring geometric parameters required to locate ophthalmic lenses in spectacles frames

G02C 13/005

for determining or recording eye movement
Definition statement

This place covers:

Eye tracking mainly for diagnostic purposes.

E.g. using image processing:

media7.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

For measurement of nystagmus

A61B 5/4863

Tracking eye movements during eye surgery

A61F2009/008

Means for monitoring data relating to the user, e.g. head-tracking, eye-tracking

G02B 27/00

Man-machine interfaces

G06F 3/01

For photography

G06F 3/013

for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
Definition statement

This place covers:

Examination of the anterior chamber: Space between the cornea and the iris

Examination of the posterior chamber: Iris, ciliary body, lens

References
Limiting references

This place does not cover:

Examination of the cornea

A61B 3/107

{for determining lens opacity, e.g. cataract}
Definition statement

This place covers:

Any type of apparatus for determining, measuring or examining the opacity of the lens, e.g. due to cataract.

for looking at the eye fundus, e.g. ophthalmoscopes (A61B 3/13 takes precedence)
References
Limiting references

This place does not cover:

Ophthalmic microscopes

A61B 3/13

Informative references

Attention is drawn to the following places, which may be of interest for search:

Documentation by photo or video means

A61B 3/14

with contact lenses (contact lenses per se G02C 7/04)
Definition statement

This place covers:

Lens adapted to be placed on the cornea for direct observation of the retina

media8.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Contact lenses per se

G02C 7/04

Ophthalmic microscopes
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Operation microscopes

A61B 90/20

Surgical microscopes

G02B 21/0012

Arrangements specially adapted for eye photography {(apparatus or arrangements for taking photographs per se G03B)}
Definition statement

This place covers:

Means for focussing an eye image detector:

media9.png

Also:

  • Adaptive optics
  • Camera adapters
  • Focussing features
  • Eye spectrometry
  • Evaluation of eye-detector distance
{of corneal reflection}
Definition statement

This place covers:

Means for stopping, e.g. polarised light reflected from the cornea to enhance detection of light reflected from the retina, e.g. in eye fundus examinations.

for measuring intraocular pressure, e.g. tonometers
Definition statement

This place covers:

Detect intraocular pressure.

E.g., using a deformable element in contact with the cornea

media10.png

Also:

  • using deformable item on the eye surface
  • causing eye deformation using ultrasound waves
  • using implanted sensor
{Non-contacting tonometers}
Definition statement

This place covers:

Detect intraocular pressure by deforming the eye surface with a gas jet a measuring the deformation of the eye surface

media11.png

Arrangement of plural eye-testing or -examining apparatus
Definition statement

This place covers:

Combinations of eye-testing apparatus in a single workstation, e.g. at a test station.

{characterised by modular construction}
Definition statement

This place covers:

Apparatus may be modified for different applications by exchanging component parts.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Attachment of cameras or photography equipment

A61B 3/14 - A61B 3/158

Detecting, measuring or recording for diagnostic purposes (radiation diagnosis A61B 6/00; diagnosis by ultrasonic, sonic or infrasonic waves A61B 8/00); Identification of persons
References
Limiting references

This place does not cover:

Radiation diagnosis

A61B 6/00

Diagnosis by ultrasonic, sonic or infrasonic waves

A61B 8/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring or recording in general

G01

Special rules of classification

The breakdown symbols (i.e. the non "parallel" or non "mirror" symbols) and "orthogonal" symbols are to be used for classifying the invention information (in addition to the invention symbols) in case the invention is insufficiently classified by an invention information symbol. They are also to be used for classifying the additional information. They are stored in the additional information field.

{Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network (A61B 5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W)}
References
Limiting references

This place does not cover:

Endoradiosondes

A61B 5/07

Informative references

Attention is drawn to the following places, which may be of interest for search:

Transmitting measured data in general

G01D 5/00, G08C

Transmission

H04B

Transmission of digital information

H04L

Wireless communication networks

H04W

{transmitting optical signals (transmission by light H04B 10/00)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Transmission by light

H04B 10/00

{Features or image-related aspects of imaging apparatus classified in A61B 5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room (image data processing or generation G06T)}
Special rules of classification

Documents in this subgroup should be also be classified according to type of imaging apparatus in other subgroups of A61B 5/00.

{including treatment, e.g., using an implantable medical device, ablating, ventilating}
Definition statement

This place covers:

Imaging apparatus, for example employing electron or nuclear magnetic resonance, including surgical and therapeutic techniques to facilitate healing.

Implantable medical device may include pacemakers. Ablating includes cutting, eroding, melting, evaporating, or vaporizing. Ventilating includes oxygenating, aerating.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Diagnosis combined with treatment in closed-loop systems or methods

A61B 5/4836

Monitoring or testing the effects of treatment, e.g. of medication

A61B 5/4848

for verifying the position of the patient with respect to the therapeutic radiation beam

A61N 5/1049

{Detecting, measuring or recording by applying mechanical forces or stimuli (A61B 5/021, A61B 5/4884 and A61B 9/00 take precedence)}
Definition statement

This place covers:

Testing or evaluating the body or part of the body by applying mechanical forces or stimuli and measuring the response of the body or tissue to the mechanical force or stimulus.

References
Limiting references

This place does not cover:

Measuring pressure in heart or blood vessels

A61B 5/021

Stress testing

A61B 5/4884

Examination by percussion

A61B 9/00

{by applying vibrations}
Definition statement

This place covers:

1) Vibration stimulator, e.g. for detecting pain threshold

media12.png

2) Apply stimulation while carrying out measurements, e.g. oximetry:

media13.png

References
Limiting references

This place does not cover:

Applying ultrasound vibrations

A61B 8/00

{by applying pressure, e.g. compression, indentation, palpation, grasping, gauging}
Definition statement

This place covers:

Applying compression during a measurement:

media14.png

Holding skin for skin gauges, palpation, indentation

{by applying suction}
Definition statement

This place covers:

Applying suction or vacuum at the measurement area during the measurement, e.g. to increase blood pressure:

media15.png

References
Limiting references

This place does not cover:

Apply suction to enhance body fluid extraction

A61B 5/150099

Apply suction to attach sensor to the body surface

A61B 5/6834

{by applying motion other than vibrations, e.g. rolling, rubbing, applying a torque, tribometry}
Definition statement

This place covers:

Applying torque, friction etc. to a body part during the measurement of an effect of this force

media16.png

{using light, e.g. diagnosis by transillumination, diascopy, fluorescence (A61B 5/0093, A61B 5/1455, A61B 5/02416 and A61B 5/0261 take precedence)}
Definition statement

This place covers:

Testing or evaluating the body, parts of the body or body tissues by applying light and measuring the change in light characteristics caused by the interaction of the light with the body or tissue.

References
Limiting references

This place does not cover:

Optoacoustic or acoustooptic imaging

A61B 5/0093

Optical probes for detecting heart rate

A61B 5/02416

Optical probes for blood flow measurement

A61B 5/0261

Optical probes for detecting blood characteristics

A61B 5/1455

Informative references

Attention is drawn to the following places, which may be of interest for search:

Features or image-related aspects of imaging apparatus

A61B 5/0033

Medical imaging apparatus involving image processing or analysis

A61B 2576/00

Spectrometry

G01J 3/00

Optical measurment in general

G01N 21/00

{Arrangements for scanning}
Definition statement

This place covers:

Diagnosis using scanned light, e.g.:

Laser speckle imaging

media17.png

{Body surface scanning}
Definition statement

This place covers:

Apparatus for optical scanning of the external body surface:

media18.png

{Optical coherence imaging}
Definition statement

This place covers:

Detection using coherent light emission

media19.png

References
Limiting references

This place does not cover:

OCT for eye diagnosis

A61B 3/102

Informative references

Attention is drawn to the following places, which may be of interest for search:

OCT in general

G01B 9/02, G01N 21/47

{Confocal scanning}
Definition statement

This place covers:

The use of confocal scanning techniques, e.g. confocal laser scanning microscopy in order to obtain images at selected depths of body tissue.

media20.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Confocal scanning surgical probes

G02B 21/002

{by measuring fluorescence emission}
Definition statement

This place covers:

Detecting fluorescence emission as a result of irradiating excitation light

media21.png

{by tomography, i.e. reconstruction of 3D images from 2D projections (A61B 5/0066 takes precedence)}
Definition statement

This place covers:

Reconstructing volumes using light irradiated into the body and scattered outside the body

media22.png

References
Limiting references

This place does not cover:

Optical coherence tomography

A61B 5/0066

{by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy (A61B 5/0071 takes precedence)}
Definition statement

This place covers:

Evaluating spectral properties of body parts

media23.png

References
Limiting references

This place does not cover:

Measuring fluorescence emission

A61B 5/0071

{Devices for viewing the surface of the body, e.g. camera, magnifying lens}
Definition statement

This place covers:

Apparatus for viewing and taking images of the surface of the body. Documents may include diagnostic evaluation of images, e.g. evaluation of images taken with a camera at different times

media24.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Apparatus for image acquisition of a particular organ of body part

A61B 5/004

{adapted for particular medical purposes}
Definition statement

This place covers:

Devices using light adapted for a particular medical procedure, e.g. dentistry, mammography, insertion into the body

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Particular medical applications

A61B 5/40 - A61B 5/48

Relationship between the sensor and the patient

A61B 5/68

{for introduction into the body, e.g. by catheters (A61B 5/1459 takes precedence)}
Definition statement

This place covers:

Inspecting the composition of body tissues using light probes introduced into the body

media25.png

References
Limiting references

This place does not cover:

Invasive probes for taking images (i.e. endoscopes)

A61B 1/00

Invasive optical sensors

A61B 5/1459

Informative references

Attention is drawn to the following places, which may be of interest for search:

Probes mounted on invasive devices

A61B 5/6846

{for oral or dental tissue}
Definition statement

This place covers:

Detecting properties of all types of oral or dental tissue, e.g. teeth, gums, tongue

media26.png

References
Limiting references

This place does not cover:

Imaging the oral region

A61B 1/24

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring instruments specially adapted for dentistry

A61C 19/04

{for mammography}
Definition statement

This place covers:

Detection of breast cancer or other properties using light

media27.png

References
Limiting references

This place does not cover:

X-ray mammography

A61B 6/502

Ultrasound mammography

A61B 8/0825

Informative references

Attention is drawn to the following places, which may be of interest for search:

Breast evaluation in general

A61B 5/4312

Biopsy instruments for the breast

A61B 10/0041

{Detecting, measuring or recording by applying one single type of energy and measuring its conversion into another type of energy}
Definition statement

This place covers:

E.g., magnetoacoustic examination: apply magnetic energy, detect resulting acoustic radiation

media28.png

{by applying light and detecting acoustic waves, i.e. photoacoustic measurements}
Definition statement

This place covers:

Apply light, detect resulting acoustic emission

media29.png

{by applying acoustic waves and detecting light, i.e. acoustooptic measurements}
Definition statement

This place covers:

Apply acoustic (e.g. ultrasonic) energy, detect resulting light emission

media30.png

Measuring temperature of body parts; {Diagnostic temperature sensing, e.g. for malignant or inflamed tissue} (clinical thermometers G01K 5/22; thermometers for special purposes G01K 13/00)
References
Limiting references

This place does not cover:

Transmission of temperature signals

A61B 5/0008

Informative references

Attention is drawn to the following places, which may be of interest for search:

Clinical thermometers

G01K 5/00

Thermometers for special purposes

G01K 13/00

Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
Definition statement

This place covers:

Apparatus for detecting, measuring or recording physiological parameters related to diagnosis of the cardiovascular system. It includes apparatus where calculation of health indices, e.g. an arterial index, are made or apparatus for monitoring trends in the patient's condition by analysis of the physiological data, e.g. ambulatory blood pressure monitoring.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring a physiological parameter of a patient undergoing therapy, e.g. for controlling the administration of therapy

A61M 2230/00

Controlling electrotherapy using a measured physiological parameter

A61N 1/365

Electrotherapy combined with monitoring a physiological parameter

A61N 1/3702

Measuring a physiological parameter of a user of sports apparatus

A63B 2230/00

Special rules of classification

Multiple subgroups may be allocated if the particular physiological parameter is essential for the determination of a diagnosis or calculation of a health index.

{Determining blood viscosity}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Investigating flow properties of materials, e.g. viscosity

G01N 11/00

Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
Definition statement

This place covers:

Apparatus for detecting, measuring or recording multiple physiological parameters where at least one parameter is a cardiovascular parameter. Combinations with any other physiological parameters, not only a respiratory condition, are allowed, e.g. measurement of heart rate, movement activity and blood glucose concentration. Multiparameter vital signs monitoring.

Special rules of classification

Indexing Codes added for specific parameters to show the combination of physiological parameters measured, e.g. A61B 5/024, A61B 5/0816 and A61B 5/14532.

{Simultaneously evaluating both cardiovascular condition and temperature}
Definition statement

This place covers:

Simultaneously evaluating both cardiovascular condition and body temperature. Multiple vital signs monitoring where at least one cardiovascular parameter is measured with body temperature, e.g. heart rate and temperature.

References
Limiting references

This place does not cover:

Remote monitoring of patients by using telemetry of temperature signals

A61B 5/0008

Details of apparatus calibration for compensation or correction of the measured physiological value using ambient temperature

A61B 2560/0252

Clinical thermometers

G01K 5/00

Special purpose thermometers

G01K 13/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring temperature of a patient undergoing therapy, e.g. for controlling administration of therapy

A61M 2230/50

Controlling electrotherapy using body or blood temperature

A61N 1/3655

Measuring temperature of a user of sports apparatus

A63B 2230/50

Measuring pressure in heart or blood vessels (A61B 5/0205 takes precedence)
Definition statement

This place covers:

Apparatus for detecting, measuring or recording blood pressure, diastolic pressure, systolic pressure, arterial pressure, venous pressure. Includes measuring pressure in specific blood vessels, e.g. aortic pressure.

References
Limiting references

This place does not cover:

Simultaneously evaluating both cardiovascular conditions and different types of body conditions

A61B 5/0205

Detecting, measuring or recording fluid pressure within the body other than blood pressure

A61B 5/03

Measuring fluid pressure by mechanical pressure-sensitive elements in general

G01L 7/00

Measuring fluid pressure by electric or magnetic pressure-sensitive elements in general

G01L 9/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for maintaining contact with the body by monitoring or controlling sensor contact pressure

A61B 5/6843

Details of pressure sensors specially adapted for sensing pressure in-vivo

A61B 2562/00

Measuring blood pressure during the administration of therapy

A61M 2230/04 and A61M 2230/30

Controlling electrotherapy by using blood pressure

A61N 1/36564

Measuring blood pressure of a user of sports apparatus

A63B 2230/04 and A63B 2230/30

Special rules of classification

IPC precedence does not apply in the case where the blood pressure in combination with another physiological parameter is essential for the invention, e.g. in calculation of a particular arterial index.

by means inserted into the body (catheters A61M 25/00)
Definition statement

This place covers:

All types of apparatus for detecting, measuring or recording blood pressure invasively including catheters, needle probes, guidewires and implanted devices. Blood pressure may be measured in blood vessels or in the heart itself.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring pressure in other body cavities

A61B 5/036

Constructional details of invasive sensing devices

A61B 5/6847 - A61B 5/6866

Solid probes

A61M23/00

Catheters, e.g. for introducing media or drainage

A61M 25/00

{by optical transmission}
Definition statement

This place covers:

Apparatus for detecting, measuring or recording blood pressure in a blood vessel or the heart comprising optical means for transmitting the pressure change, e.g. deflection of a pressure sensitive membrane is detected optically.

References
Limiting references

This place does not cover:

Optical transmission of a pressure signal from the patient to a remote site

A61B 5/0017

Informative references

Attention is drawn to the following places, which may be of interest for search:

Transmitting or indicating the displacement of pressure sensitive flexible diaphragms using photoelectric means

G01L 9/0076

{Calibration means}
Definition statement

This place covers:

Methods or apparatus for calibrating the pressure sensor repsonse. May include correction or compensation of the measured value, e.g. due to drift.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of apparatus for calibration, e.g. calibration protocols

A61B 2560/0223

Sensors provided with means for identification combined with means for recording calibration data, e.g. on memory chip

A61B 2562/085

Testing or calibrating of apparatus for measuring fluid pressure

G01L 27/00

{provided with two or more sensor elements}
Definition statement

This place covers:

Apparatus provided with two or more pressure sensors for measuring the blood pressure in the body, e.g. two pressure transducers mounted on a catheter.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of pressure sensors, e.g. in a linear arrangement

A61B 2562/043

by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
Definition statement

This place covers:

Apparatus for detecting, measuring or recording blood pressure where the blood vessel is fully occluded during part of the measurement cycle and then released to allow blood flow.

References
Limiting references

This place does not cover:

Partial compression of blood vessel to allow blood pressure measurement

A61B 5/021

{Occluders specially adapted therefor (tourniquets A61B 17/132)}
Definition statement

This place covers:

Details of occluders, e.g. construction of inflatable cuffs, adjustable clamps.

References
Limiting references

This place does not cover:

Tourniquets

A61B 17/132

the pressure transducers comprising a liquid column
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring pressure of a fluid using liquid as a pressure sensitive medium, e.g. liquid-column gauges

G01L 7/18

Valves specially adapted therefor
Definition statement

This place covers:

Details of valves specially adapted for use in blood pressure measuring apparatus, e.g. valves for releasing air from an inflatable cuff. Includes valves used in any part of the apparatus..

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Valves for medical use

A61M 39/22

Special rules of classification

This subgroup is not restricted to apparatus where the blood vessel is occluded.

Detecting, measuring or recording pulse rate or heart rate (A61B 5/0205, A61B 5/021 take precedence)
Definition statement

This place covers:

Apparatus for detecting, measuring or recording pulse rate or heart rate, e.g. given in beats per minute.

References
Limiting references

This place does not cover:

Evaluating a cardiovascular condition not otherwise provided for, e.g. pulse waveform shape analysis

A61B 5/02

Simultaneously evaluating both cardiovascular conditions and different types of body conditions

A61B 5/0205

Measuring pressure in heart or blood vessels

A61B 5/021

Ballistocardiography, detecting chest motion due to heart beat

A61B 5/1102

Measuring pressure in heart or blood vessels

A61B 8/02

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring a physiological parameter to provide biofeedback to patient, e.g. measuring heart rate to allow patient to control the heart rate

A61B 5/486

Measuring heart rate of a patient during administration of therapy

A61M 2230/06

Measuring heart rate of a user of sports apparatus

A63B 2230/06

{using photoplethysmograph signals, e.g. generated by infra-red radiation (A61B 5/14552 takes precedence)}
Definition statement

This place covers:

Apparatus for detecting, measuring or recording pulse rate or heart rate using an optical sensor for detecting photoplethysmograph signals.

References
Limiting references

This place does not cover:

Measuring blood flow using plethysmography

A61B 5/0295

Using optical sensors for measuring blood gases, e.g. details of photometrical oximeters

A61B 5/14552

{Details of sensor}
Definition statement

This place covers:

Details of optical sensors for detecting photoplethysmograph signals. Includes constructional details of sensors, arrangements of sensors in housings or probes.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of optical sensors specially adapted for measuring blood gases

A61B 5/14552

Details of optical sensors specially adapted for in-vivo measurements

A61B 2562/0233

{with portable devices, e.g. worn by the patient}
Definition statement

This place covers:

All types of portable devices for detecting, measuring or recording pulse or heart rate. Heart rate devices may be worn on any part of the body or be incorporated in a portable device providing a non-medical function, e.g. a music player.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Arrangements of detecting, measuring or recording means where the sensors are mounted on worn items

A61B 5/6802

Arrangements of detecting, measuring or recording means where the sensors are mounted on a non-medical device

A61B 5/6887

Constructional details of apparatus, low-profile patch shaped housings

A61B 2560/04

Apparatus with built-in sensors

A61B 2560/0462

{Details of sensor (A61B 5/02427 takes precedence)}
Definition statement

This place covers:

Details of sensors for measuring heart or pulse rate not covered by A61B 5/02416 or A61B 5/0245. For example, pressure sensors, strain gauges or accelerometers for measuring the tissue deformation due to the pulse wave. Inlcudes sensor construction and arrangements of sensors in housings or probes.

References
Limiting references

This place does not cover:

Details of optical sensors for measuring heart rate

A61B 5/02427

Details of ECG sensors for measuring heart rate

A61B 5/0245

Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of sensors specially adapted for in-vivo measurements

A61B 2562/00

by using sensing means generating electric signals, {i.e. ECG signals}
Definition statement

This place covers:

Apparatus for measuring, detecting or recording the heart rate using the detection ECG signals.

References
Limiting references

This place does not cover:

Detecting specific parameters of the ECG cycle for diagnostic purposes

A61B 5/0452

Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrodes specially adapted for ECG

A61B 5/0408

Apparatus with built-in electrodes

A61B 2560/0468

within occluders, e.g. responsive to Korotkoff sounds (electric stethoscopes A61B 7/04)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electric stethoscopes

A61B 7/04

Measuring blood flow {(A61B 3/1233, A61B 3/1241 take precedence)}
Definition statement

This place covers:

Apparatus for measuring, detecting or recording blood flow or perfusion of blood in tissue. The extent of blood flow detected is not always given as a flow rate, e.g. in ml/s.

References
Limiting references

This place does not cover:

Apparatus, instrument for testing the eyes

A61B 3/1233, A61B 3/1241

Measuring volume flow or mass flow in general

G01F 1/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Controlling therapy by using blood flow rate

A61N 1/36571

using electromagnetic means, e.g. electromagnetic flowmeter
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring volume flow or mass flow using electromagnetic flowmeters

G01F 1/58

using catheters
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of catheters for measuring

A61B 5/6852

Catheters, e.g. for introducing media or drainage

A61M 25/00

Measuring or recording blood output from the heart, e.g. minute volume {(A61B 8/065 takes precedence)}
References
Limiting references

This place does not cover:

Measuring blood output from the heart using ultrasonic, sonic or infrasonic waves

A61B 8/065

Informative references

Attention is drawn to the following places, which may be of interest for search:

Controlling electrotherapy by using blood flow rate, e.g. blood velocity or cardiac output

A61N 1/36571

using plethysmography, i.e. measuring the variations in the volume of a body part as modified by the circulation of blood therethrough, e.g. impedance plethysmography
References
Limiting references

This place does not cover:

Detecting, measuring or recording devices for evaluating the respiratory organs by impedance pneumography

A61B 5/0809

Informative references

Attention is drawn to the following places, which may be of interest for search:

Impedance plethysmography not specifically for determining blood flow or perfusion

A61B 5/0535

Measuring volume of limbs, e.g. by plethysmography

A61B 5/1073

Detecting, measuring or recording fluid pressure within the body other than blood pressure, e.g. cerebral pressure; {Measuring pressure in body tissues or organs (A61B 5/205 takes precedence)}
Definition statement

This place covers:

Apparatus for detecting, measuring or recording fluid pressure within any part of the body other than blood pressure of the heart or blood vessels.

References
Limiting references

This place does not cover:

Determining bladder or urethral pressure

A61B 5/205

Measuring fluid pressure by electric or magnetic pressure-sensitive elements in general

G01L 9/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of pressure sensors specially adapted for in-vivo measurements

A61B 2562/0247

{Intracranial pressure}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring blood pressure by means inserted into the body

A61B 5/0215

Constructional details of invasive sensing devices, e.g. burr holes

A61B 5/6864

Catheters, e.g. for introducing media or drainage

A61M 25/00

Devices for cerebrospinal drainage

A61M 27/006

{by means introduced into body tracts (A61B 5/032 and A61B 5/035 take precedence)}
References
Limiting references

This place does not cover:

Detecting, measuring or recording spinal fluid pressure

A61B 5/032

Detecting, measuring or recording uterine pressure using intra-uterine probes

A61B 5/035

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring blood pressure by means inserted into the body

A61B 5/0215

Constructional details of invasive sensing devices

A61B 5/6847 - A61B 5/6866

Catheters, e.g. for introducing media or drainage

A61M 25/00

Measuring bioelectric signals of the body or parts thereof
Definition statement

This place covers:

Apparatus for measuring, detecting or recording bioelectric or biomagnetic signals generated by the body or parts thereof. The measurement does not require application of an electric current or voltage nor application of an electromagnetic or magnetic field. Apparatus for ambulatory or long-term monitoring of bioelectric signals. Apparatus for measuring combined with analysis of bioelectric signals for diagnosis.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of electrodes specially adapted for in-vivo measurements, e.g. for impedance measurements

A61B 2562/0209

Medicinal preparations involving or responsive to electricity, magnetism or acoustic waves

A61K 9/0009

Controlling electrotherapy using a physiological parameter, e.g. heart potential

A61N 1/365

Electrotherapy combined with monitoring a physiological parameter

A61N 1/3702

Electrically-conducting adhesives

C09J 9/02

Indicating or recording in connection with measuring in general

G01D

Measuring or recording or electrical currents of voltages in general

G01R 13/00

Recording with possibility of play-back

G11B

ICT specially adapted for the operation of medical equipment or devices

G16H 40/60

ICT specially adapted for mining of medical data, e.g. analysing previous cases of other patients

G16H 50/70

Emergency protective circuit arrangements

H02H

Amplifiers

H03F

Interference or noise suppression in transmissions systems

H04B 15/00

{adapted to neuroelectric signals, e.g. nerve impulses}
Definition statement

This place covers:

Apparatus for measuring, detecting or recording neuroelectric signal generated by nerves or the brain. For monitoring the brain, intracranial or intracortical electrodes are required.

References
Limiting references

This place does not cover:

Electroencephalographic signals detected on the surface of the scalp or head

A61B 5/0476

Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrodes for electrotherapy implanted or inserted into the body; for stimulating the brain; spinal or peripheral nerve electrodes; nerve electrodes not otherwise provided for

A61N 1/0529 - A61N 1/0539; A61N 1/0551

Special rules of classification

Apparatus for detecting, measuring or recording neuroelectric signals combined with stimulation of neural tissue is classified in A61B 5/04001 and the respective A61N subgroup.

{Input circuits for EEG-, or EMG-signals}
Definition statement

This place covers:

Input circuits specially adapted for EEG or EMG signals, e.g. for filtering, amplification, switching.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Input circuits for ECG

A61B 5/0428

{Detecting magnetic fields produced by bio-electric currents (measuring magnetic variables in general G01R 33/00)}
Definition statement

This place covers:

Apparatus and methods for detecting electromagnetic fields generated by the body or biomagnetic signals.

References
Limiting references

This place does not cover:

Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields

A61B 5/05

Measuring magnetic variables in general

G01R 33/00

{Analysis of electro-cardiograms, electro-encephalograms, electro-myograms}
Definition statement

This place covers:

Signal analysis of electrocardiograms, electroencephalograms and electromaygrams not covered in other subgroups usually to obtain diagnostically relevant information.

References
Limiting references

This place does not cover:

Detecting specific parameters of the electrocardiograph cycle

A61B 5/0452

Informative references

Attention is drawn to the following places, which may be of interest for search:

Evaluating the central nervous system for particular diseases

A61B 5/40

Evaluating the musculoskeletal system

A61B 5/45

{by measuring frequency distribution using a set of filters (arrangements for analysing frequency spectra in general G01R 23/00)}
References
Limiting references

This place does not cover:

Frequency distribution of EEG

A61B 5/048

Arrangements for analysing frequency spectra in general

G01R 23/00

Electrocardiography, i.e. ECG
Definition statement

This place covers:

Apparatus for detecting, measuring or recording ECG signals on the surface of the body. Apparatus for detecting, measuring or recording electrograms from the heart surface or from within the heart. Apparatus for long-term or ambulatory monitoring of ECG. Apparatus for measuring ECG combined with analysis of the ECG to obtain a diagnosis

References
Limiting references

This place does not cover:

Remote monitoring of patient with the measured ECG signals being transmitted from the patient to a remote monitor or site

A61B 5/0006

Informative references

Attention is drawn to the following places, which may be of interest for search:

Controlling electrotherapy using a physiological parameter, e.g. heart potential

A61N 1/365

Hand-held devices
Definition statement

This place covers:

Hand-held or portable apparatus for detecting, measuring or recording ECG.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Apparatus with built-in electrodes

A61B 2560/0468

Electrodes specially adapted therefor (for foetal cardiography A61B 5/0448; for electroencephalograph signals A61B 5/0478; for electromyography A61B 5/0492)
Definition statement

This place covers:

Constructional details of electrodes for detecting ECG.

References
Limiting references

This place does not cover:

For foetal cardiography

A61B 5/0448

For electroencephalograph signals

A61B 5/0478

For electromyography

A61B 5/0492

Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrodes for detecting neural signals

A61B 5/04001

Electrodes for bioimpedance measurements

A61B 5/053 - A61B 5/0537 ; A61B 2562/0209

Probe or electrodes for electrosurgery

A61B 18/14

Manufacturing methods specially adapated for producing electrodes

A61B 2562/125

Electrodes for stimulation in electrotherapy

A61N 1/04 - A61N 1/0597

Special rules of classification

Where the electrode(s) is(are) adapted for both measuring and applying therapy classification in A61B 5/0408-A61B 5/0416 and the corresponding therapy or electrosurgical group takes place.

{attached by means of suction}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for maintaining contact with the body by using a vacuum

A61B 5/683

{Multiple electrode holders (A61B 5/04286, A61B 5/0422 take precedence)}
Definition statement

This place covers:

Arrangements of multiple ECG electrodes mounted on a single substrate, e.g. a flexible strap. Arrangements of multiple electrodes joined by a cable. Arrangements of multiple ECG electrodes mounted or fixed on an item of clothing, e.g. vest.

References
Limiting references

This place does not cover:

Multiple ECG electrode holders for introducing into the body

A61B 5/0422

Patient cord assembly, e.g. cable harness

A61B 5/04286

{using conductive adhesive means}
Definition statement

This place covers:

Conductive adhesive or gels for improving the electrical contact between the electrode and the skin or body surface.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Adhesives characterised by being electroconductive

C09J 9/02

for introducing into the body
Definition statement

This place covers:

Details of ECG electrodes specially adapted to be introduced into the body. All types of apparatus, e.g. catheters, guidewires, probes or implanted devices for introducing ECG electrodes into the body. Electrodes for epicardial or endocardial measurements of ECG or electrograms.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Constructional details of invasive sensing devices

A61B 5/6847 - A61B 5/6866

Electrodes for electrotherapy for implantation or insertion into the body, epicardial or endocardial electrodes

A61N 1/0587 - A61N 1/0597

{Multiple electrode holders}
Definition statement

This place covers:

Multiple electrodes on a single holder, e.g. multiple electrodes on a catheter.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Sensors mounted on catheters

A61B 5/6852

Protection against electrode failure
Definition statement

This place covers:

Apparatus for detecting electrode failure or electrode disconnection from patient. Also called lead failure.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Monitoring or maintaining sensor contact pressure

A61B 5/6843

{using insulating or floating elements, e.g. transformers, opto-couplers (transformers for specific applications H01F 38/00; amplifiers H03F; optocouplers H04B 10/80)}
Definition statement

This place covers:

Means for the electrical isolation of the the patient side electrodes from the mains power supply, e.g. using an isolation transformer or optocoupler.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Coupling light guides with opto-electronic elements

G02B 6/42

Adaptations of transformers for specific applications of functions

H01F 38/00

Amplifiers using electroluminescent element or photocell

H03F 17/00

{Patient cord assembly, e.g. cable harness}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Arrangements of sensors with cables or leads, e.g. cable harnesses

A61B 2562/221

{Switching circuits}
Definition statement

This place covers:

Apparatus for switching the connection of ECG leads to the monitor or analysis unit, e.g. using a multiplexer.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Modular apparatus with a separable interface unit, e.g. for transmission or switching signals

A61B 2560/045

Recording apparatus specially adapted therefor
Definition statement

This place covers:

Recording apparatus specially adapted for long-term or ambulatory recording of ECG, e.g. 24 hour recording, Holter monitors.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Recording measured values

G01D 9/00

{using integrated circuit memory devices}
Definition statement

This place covers:

Integrated circuit memory devices may be built into the device or may comprise removable memory chips, e.g. flash memory stick

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Solid state data loggers

G01D 9/005

Displays specially adapted therefor {(arrangements for displaying electric variables or waveforms, e.g. cathode-ray oscilloscopes, G01R 13/00)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Arrangements for displaying electric variables or waveforms, e.g. cathode-ray oscilloscopes

G01R 13/00

Output arrangements for digital computers, output to a display device

G06F 3/14

Electrodes specially adapted therefor, e.g. scalp electrodes
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Sensors for measuring characteristics of blood specially adapted for foetal tissue

A61B 5/1464; A61B 5/1482

Anchoring means for maintaining sensor contact with the body, e.g. barbs

A61B 5/6839

{attached by means of suction}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for maintaining sensor contact with the body using a vacuum

A61B 5/6834

Detecting specific parameters of the electrocardiograph cycle
Definition statement

This place covers:

Apparatus for detecting, measuring or recording ECG in combination with analysis of specific parameters of the electrocardiograph cycle in order to determine a diagnosis, e.g. analysis of ST segment elevation for determining ischaemia. Includes analysis of epicardial or endocardial electrograms for diagnosis.

References
Limiting references

This place does not cover:

Methods or arrangements for recognising patterns in general

G06K 9/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Controlling electrotherapy by using a physiological parameter, e.g. heart potential

A61N 1/365

Detecting R peaks, e.g. for synchronising diagnostic apparatus {(physiological signal analysis for synchronising or triggering a measurement or image acquisition A61B 5/7285)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Circuit arrangements for obtaining a series of X-ray photographs

H05G 1/60

Detecting tachycardy or brachycardy
References
Limiting references

This place does not cover:

Devices provided with high/low alarm devices

A61B 5/02455

Electroencephalography {(devices for psychotechnics A61B 5/16)}
Definition statement

This place covers:

Apparatus for detecting, measuring or recording electroencephalographic signals (EEG) for diagnosis. Apparatus for measuring combined with analysis of signals for determining a diagnosis, e.g. for determining a seizure.

References
Limiting references

This place does not cover:

Devices for psychotechnics, e.g. for determining the psychological state

A61B 5/16

Devices or methods to cause a change in the state of consciousness

A61M 21/00

Input arrangements for computers based on nervous system activity, e.g. brain machine interfaces using EEG

G06F 3/015

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring a physiological parameter to provide biofeedback to a patient, e.g. to allow the patient to control brain waves

A61B 5/0482

Evaluating the central nervous system

A61B 5/4076

Measuring EEG of a patient during administration of therapy

A61M 2230/10

Measuring EEG of a user of sports apparatus

A63B 2230/10

Methods or arrangements for recognising patterns in general

G06K 9/00

Electrodes specially adapted therefor
References
Limiting references

This place does not cover:

Measuring neuroelectric signals, e.g. by using intracranial or intracortical electrodes

A61B 5/04001

Detecting the frequency distribution of signals {(analysing frequency spectra in general G01R 23/00)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Analysing frequency spectra in general

G01R 23/00

using biofeedback {(biofeedback per se A61B 5/486)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Biofeedback per se

A61B 5/486

using evoked response
Definition statement

This place covers:

Apparatus for detecting, measuring or recording EEG that has been evoked in response to the application of a stimulus.

{acoustically or auditory}
Definition statement

This place covers:

Using a sound, acoustic or audible stimulus to evoke an EEG response.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Audiometering with electric or electronic apparatus, e.g. using evoked EEG response

A61B 5/12

Electromyography
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrical operating or control means of prostheses implantable into the body

A61F 2002/482

Electrical operating or control means of prostheses not implantable in the body, e.g. myoelectric

A61F 2/72

{Control of prosthetics}
Definition statement

This place covers:

Detecting, measuring or recording EMG combined with analysis of the EMG signal in order to provide control of a prosthesis.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Bioelectric control of prothesis

A61F 2/72

Electrodes specially adapted therefor, e.g. needle electrodes
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring neuroelectric signals, e.g. using intracranial or intracortical electrodes

A61B 5/04001

Electro-oculography, e.g. detecting nystagmus {(measuring or inducing nystagmus A61B 5/4863)}
Definition statement

This place covers:

Apparatus for detecting, measuring or recording electro-oculographic signals or electroretinographic signals.

References
Limiting references

This place does not cover:

Measuring or inducing nystagmus

A61B 5/4863

Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; {Measuring using microwaves or radiowaves} (A61B 5/02, A61B 5/04, A61B 5/11 take precedence)
Definition statement

This place covers:

Measurements carried out while applying a magnetic field, an electric field or an electromagnetic field, e.g.:

1) Magnetic induction tomography, note figure showing measurement coils, or

media683.png

2) Measurements of microwaves modified by parts of the body.

References
Limiting references

This place does not cover:

Detecting heart rate, blood flow etc.

A61B 5/02

EEG, ECG, EOG

A61B 5/04

Detecting movement of the body

A61B 5/11

Informative references

Attention is drawn to the following places, which may be of interest for search:

Features or image-related aspects of imaging apparatus

A61B 5/0033

Dental radiography

A61B 6/14

Measuring electrical impedance or conductance of a portion of the body
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Determining position of an invasive probe using impedance measurements

A61B 5/063

Measuring impedance in general

G01R 27/00

{Measuring skin impedance}
Definition statement

This place covers:

Measuring skin impedance, conductance or resistance by applying a current or voltage to the skin.

media32.png

{specially adapted for acupuncture}
Definition statement

This place covers:

Using skin conductance measurement to detect acupuncture points

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Evaluating the autonomic nervous system

A61B 5/4035

{Measuring galvanic skin response, e.g. by lie detector}
Definition statement

This place covers:

Measurements are carried out while presenting a stimulus (visual, auditory, auditive, etc.) to the subject of the examination

{Testing vitality of teeth}
Definition statement

This place covers:

Conductance / impedance measurement on teeth

media33.png

References
Limiting references

This place does not cover:

Dental radiography

A61B 6/14

Informative references

Attention is drawn to the following places, which may be of interest for search:

Evaluation of teeth in general

A61B 5/4547

Sensors adapted for attachment to the mouth

A61B 5/682

Measuring instruments specially adapted for dentistry

A61C 19/04

{impedance plethysmography}
Definition statement

This place covers:

Detection of volume changes by impedance measurements

media34.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Detection of electrical impedance of respiratory organs

A61B 5/0809

{Impedance imaging, e.g. by tomography}
Definition statement

This place covers:

Reconstruction of images of parts of the body by means of impedance measurements:

media35.png

{Measuring body composition by impedance, e.g. tissue hydration or fat content}
Definition statement

This place covers:

Fat content evaluation: measuring various parameters of body composition including body fat composition, lean body mass, body-fat ratio, tissue hydration, total body water, extracellular fluid volume etc..

media36.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Weighing apparatus for diet control

G01G 19/4146

ICT specially adapted for therapies or health-improving plans (e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance) relating to nutrition control (e.g. diets)

G16H 20/60

involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
Definition statement

This place covers:

A61B 5/055 mainly covers the relationship between magnetic resonance apparatus (NMR, MRS, MRI, fMRI etc.) and other devices classified in A61B 5/00. This subgroup does not include specific MR arrangements and MR processes as such which are already covered in G01R 33/20, however includes documents where the diagnostic application of MR predominates rather than the system details or the details of the MR process. The following image shows an example of an MRI device with arterial tone measurement output.

media684.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Features or image-related aspects of imaging apparatus

A61B 5/0033

Adapted for image acquisition of a particular organ or body part

A61B 5/004

Diagnosing of monitoring cognitive diseases, e.g. Alzheimer, prion diseases or dementia

A61B 5/4088

Touch or pain perception evaluation

A61B 5/4824

Surgical systems with NMR or MRI images on a monitor during operation

A61B 2090/374

In vivo contrast agents

A61K 49/00

Arrangements or instruments for measuring magnetic variables involving electronic or nuclear magnetic resonance, in general

G01R 33/20

Invasive instruments, e.g. catheters or biopsy needles, specially adapted for tracking, guiding or visualization by NMR

G01R 33/285

Using nuclear magnetic resonance [NMR]

G01R 33/44

With selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy

G01R 33/483

Signal processing systems, e.g. using pulse sequences

G01R 33/54

Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution

G01R 33/56

Special rules of classification

There is an overlap between the scope of G01R 33/20 (or its relevant subgroup) and A61B 5/055 in the sense that, depending on the disclosure of a given document, the document may have to be classified in G01R 33/20 (or its relevant subgroup) only, in A61B 5/055 only or in both places.

For instance:

  • if the invention information of a document to be classified is primarily directed to the MR process as such (e.g. a novel pulse sequence which, according to the document, facilitates the diagnosis of a disease on the basis of the resulting MR images wherein the document merely mentions the diagnosis but does not specifically disclose its implementation in detail), the document should be classified in G01R 33/20 (or its relevant subgroup) only and the additional information related to the diagnosis may be classified using the appropriate Indexing Code corresponding to A61B 5/055.
  • if the invention information of the document is primarily directed to the diagnosis as such (e.g. a novel way of processing MRI data in order to enable the diagnosis of a disease wherein the MRI data was acquired using a commonly known standard MRI technique), the document should be classified in A61B 5/055 only.
  • documents where the focus lies in diagnostic features as well as in technical details of the MR apparatus or details of the MR process should be classified in both A61B 5/055 and G01R 33/20.
{Means for positioning of patients (for radiation diagnosis or therapy A61B 6/04)}
Definition statement

This place covers:

Positioning of patients in NMR or MRI apparatus including patient support tables, chairs and body restraints.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Positioning of patients in x-ray apparatus

A61B 6/04

Devices, other than using radiation, for detecting or locating foreign bodies (for removing same A61B 17/50 ){; determining position of probes within or on the body of the patient}
Definition statement

This place covers:

Position sensors on a probe to detect relative positions of different components

media38.png

Sensor 50 is configured to provide position data for the emitter 56 and detector 57.

Sensor 50 comprises a sensor body that includes the emitter 56, detector 57, and one or more position indicators 58 and 60

References
Limiting references

This place does not cover:

Tracking foreign bodies using x-ray

A61B 6/12

Tracking foreign bodies using ultrasound

A61B 8/0833

Instruments for removing foreign bodies

A61B 17/50

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Foreign body

1) Sensing probe inserted in the human or animal body, e.g. catheter, endoscope, implant 2) External sensing probe

{Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body (A61B 1/00158 takes precedence)}
Definition statement

This place covers:

External tracking device detecting position of:

1) Invasive probes comprising position indicating element

2) Markers placed on the surface of the body

References
Limiting references

This place does not cover:

Endoscope provided with position sensors, e.g. internally mounted

A61B 1/00158

{using magnetic field}
Definition statement

This place covers:

Probes comprising magnet or electromagnetic coil

media39.png

References
Limiting references

This place does not cover:

MRI tracking of surgical probes

G01R 33/287

Informative references

Attention is drawn to the following places, which may be of interest for search:

Electromagnetic tracking of surgical instruments

A61B 2034/2051

{using impedance measurements}
Definition statement

This place covers:

Impedance measurement means for detecting the position of an invasive probe

media40.png

The coordinates of a catheter inside the body are determined by passing currents between catheter electrodes 60, 62 and body surface electrodes 30.

media41.png

{using markers (A61B 5/062 takes precedence)}
Definition statement

This place covers:

1) Detecting position of markers associated with a sensor, the markers being placed on the surface of the body of the patient.

media42.png

2) Tracking position of markers associated with an invasive probe

media43.png

The position and movement of the tracking members are tracked by the control unit 14.

The pressure sensors in rings 18a-18i serve as the tracking members.

References
Limiting references

This place does not cover:

Using magnetic fields

A61B 5/062

{Determining position of the probe employing exclusively positioning means located on or in the probe, e.g. using position sensors arranged on the probe}
Definition statement

This place covers:

The probe is provided with means for detecting its own position within the body

media44.png

Position sensors detect positions relative to their own reference frame, e.g., gyroscopes, accelerometers

{Superposing sensor position on an image of the patient, e.g. obtained by ultrasound or x-ray imaging}
Definition statement

This place covers:

Registration of pre-operative images with detected positions of a probe.

media45.png

References
Limiting references

This place does not cover:

MRI tracking of interventional instruments

G01R 33/285

Informative references

Attention is drawn to the following places, which may be of interest for search:

X-ray detection of foreign bodies

A61B 6/12

Ultrasound detection of foreign bodies

A61B 8/0833

Visualisation of surgical instruments using MRI

G01R 33/285

Endoradiosondes
Definition statement

This place covers:

Wireless data transmission between probe within the body and external monitor

References
Limiting references

This place does not cover:

Transmission of endoscopic image data

A61B 1/04

Transmission of measured data from implanted circuitry

A61B 5/0031

{Intestinal transmitters}
Definition statement

This place covers:

Swallowed capsules travelling through the GI system

media46.png

{Permanent implantations (telemetry using implanted circuitry A61B 5/0031; implanted stimulators for therapy A61N 1/3605, A61N 1/362, A61N 1/372)}
Definition statement

This place covers:

Implanted devices that are attached or anchored to the internal body tissue so that movement of the device from the place of attachment does not occur.

media47.png

Using clips, sensor 10 may be held at a fixed position in the Gl tract.

Device 10 uses a wireless communication protocol to transmit data to monitor 14

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Implants for transcutaneous transmission

A61B 5/0031

Evaluation of respiratory rate in general

A61B 5/08

Implanted stimulators

A61N 1/362, A61N 1/372

Detecting, measuring or recording devices for evaluating the respiratory organs (A61B 5/0205 takes precedence)
Definition statement

This place covers:

Evaluation of the respiratory system.

References
Limiting references

This place does not cover:

Simultaneously evaluating both cardiovascular conditions and different types of body conditions

A61B 5/0205

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Mechanical impedance of respiratory organs

Ratio of the measured air pressure and air flow at the mouth of the patient

Electrical impedance of respiratory organs

Ratio of voltage applied to respiratory organs and current flow

{Recording apparatus specially adapted therefor}
Definition statement

This place covers:

Apparatus for recording respiratory parameters, e.g. portable devices for ambulatory recording.

{by whole-body plethysmography (measuring blood flow using plethysmography A61B 5/0295; impedance plethysmography A61B 5/053; measuring volume of the body or parts thereof A61B 5/1073)}
Definition statement

This place covers:

Evaluating volume changes due to respiration

1) by measuring changes of spatial dimensions:

media48.png

2) by measuring pressure changes in a closed chamber

media49.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Evaluation of respiratory rate in general

A61B 5/0816

Measuring movement due to respiration

A61B 5/113

{by impedance pneumography}
Definition statement

This place covers:

Detection of electrical impedance of respiratory organs

media50.png

IP (impedance pneumography) circuit 27 25 generates a current that is modulated at a high frequency (typically 50-100 kHz). The current passes through electrode LL 24. It then propagates through the patient's chest, as indicated by the arrow 29, where a respiration-induced capacitance change modulates it according to the RR.

Electrode UR 20 detects the resultant analog signal, which is then processed within the IP circuit to determine an analog IP waveform 30 featuring a low-frequency series of pulses corresponding to RR.

The analog filters in the IP circuit 27 are chosen to filter out high-frequency components that contribute to the ECG QRS complex.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Impedance plethysmography in general

A61B 5/0535

Detecting respiration rate in general

A61B 5/0816

{Measurement of pulmonary parameters by tracers, e.g. radioactive tracers}
Definition statement

This place covers:

1) Evaluation of tracer quantity absorbed by the lungs

media51.png.

2) Inhalators for tracers to be detected by imaging devices, e.g. MRI, PET

media52.png

References
Limiting references

This place does not cover:

Breath analysis

A61B 5/082

Informative references

Attention is drawn to the following places, which may be of interest for search:

Breath test in general

A61B 5/083

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Tracer

Composition, e.g. aerosol, which is mixed with inhaled air and detected after exhalation

{Measuring devices for examining respiratory frequency (measuring frequency of electric signals G01R 23/00)}
Definition statement

This place covers:

Detection of respiratory signals, e.g.:

using photoplethysmography, i.e. a signal provided by a pulse oximeter on a body part, e.g. finger, ear

media53.png

References
Limiting references

This place does not cover:

Detect changes of body volume due to respiration

A61B 5/0806, A61B 5/113

Detect respiratory signals using electrical impedance measurements

A61B 5/0809, A61B 5/0535

Detect respiratory sounds

A61B 7/003

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring frequency of electric signals

G01R 23/00

{Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath (A61B 5/083, A61B 5/091 take precedence)}
Definition statement

This place covers:

Detection of chemical composition of exhaled breath.

Not relating to lung function.

media54.png

Detector 441 is optionally operable to detect bacteria, virus, fungus, antibody, protein, or chemical such as carbon dioxide, carbon monoxide, nitric oxide, alcohol and the like

References
Limiting references

This place does not cover:

Evaluation of lung function

A61B 5/083, A61B 5/085

Determination of instantaneous concentration of a component of inhaled/exhaled air in order to determine breath flow

A61B 5/087

Informative references

Attention is drawn to the following places, which may be of interest for search:

Gas analysers

G01N 33/0009

Breath analysis in general

G01N 33/497

{Detecting or evaluating cough events}
Definition statement

This place covers:

Detect cough events which may be spontaneous coughing events or where the patient is asked to voluntarily cough:

media55.png

Evaluate cough event:

media56.png

{Detecting or evaluating apnoea events (A61B 5/4818 takes precedence)}
Definition statement

This place covers:

Detection of all types of apnoea events, e.g. cessation of breathing (apnoea), shallow breathing (hypopnea), fast deep breathing (hypernoea), Cheynes-Stokes respiration etc.

References
Limiting references

This place does not cover:

Detection of sleep apnoea

A61B 5/4818

Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
Definition statement

This place covers:

Breath test specially adapted to detect rate of metabolism. For example, properties of exhaled gas are compared to properties of inhaled air.

media57.png

References
Limiting references

This place does not cover:

Detect a tracer mixed in inhaled gas

A61B 5/0813

Determination of instantaneous concentration of a component of inhaled/exhaled air in order to determine breath flow

A61B 5/087

Informative references

Attention is drawn to the following places, which may be of interest for search:

Detect chemical composition of exhaled gas by breath test in general

A61B 5/082

Gas analysers

G01N 33/0009

Breath analysis in general

G01N 33/497

{Measuring rate of oxygen consumption}
Definition statement

This place covers:

Evaluation of O2 uptake from breath analysis.

{Measuring rate of CO2 production}
Definition statement

This place covers:

Evaluation of CO2 release.

Measuring impedance of respiratory organs or lung elasticity
Definition statement

This place covers:

Detection of mechanical impedance of respiratory organs.

media58.png

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Mechanical impedance of respiratory organs

Ratio of the measured air pressure and air flow at the mouth of the patient

Electrical impedance of respiratory organs

Ratio of voltage applied to respiratory organs and current flow

Measuring breath flow
Definition statement

This place covers:

Evaluate breath flow

media59.pngText1

References
Limiting references

This place does not cover:

Detect breath flow in order to evaluate lung impedance parameters

A61B 5/085

Ventilators provided with means for detecting breath flow

A61M 16/00

{Peak expiratory flowmeters}
Definition statement

This place covers:

Detectors of maximum air flow

Imedia60.png

The pointer 4 is entrained along its slot 6 by the exhaled air flow. When the exhalation ends friction retains the pointer 4 in its displaced position to indicate a peak flow value against a scale 8 marked along the slot

References
Limiting references

This place does not cover:

Spirometers in general, wherein it is possible to calculate peak flow

A61B 5/087

{using optical means}
Definition statement

This place covers:

Detection of breath flow using optical sensors. The optical sensor is placed in or by the flow path.

media61.png

The detector 40 generates an electrical signal that is related to the radiant power falling on it. The detector senses the breath exhaled into the volume 16 close to the patient's mouth and nose.

The signal processing circuit 48 examines the electrical signal 44 to determine whether it varies in a manner that indicates the patient is breathing.

{using means carried by the fluid stream, e.g. free floating balls}
Definition statement

This place covers:

E.g. for indicating flow level for breath training.

media62.png

Object 29 is raised in tube 26 according to exhalation effort of the patient.

References
Limiting references

This place does not cover:

Flow meters adapted to indicate specifically the maximum value

A61B 5/087

{using means deflected by the fluid stream, e.g. flaps}
Definition statement

This place covers:

media63.png

Flaps 16, 18 are deflectable in response to breath flow 25.

{using temperature sensing means}
Definition statement

This place covers:

media64.png

A filament 34 is secured to the ends of the four pins 32.

The filament 34 is used to measure the flow rate of the fluid 26 based on its power consumption.

using an element rotated by the flow {(toys actuated by air current A63H 33/40)}
Definition statement

This place covers:

media65.png

An optical detector detects rotor movement to evaluate air flow

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Toys actuated by air current

A63H 33/40

Devices for facilitating collection of breath or for directing breath into or through measuring devices
Definition statement

This place covers:

media66.png

Detecting, measuring or recording devices for testing the shape, pattern, {colour,} size or movement of the body or parts thereof, for diagnostic purposes (A61B 5/08 takes precedence; measuring aids for tailors A41H 1/00; measuring instruments specially adapted for dentistry A61C 19/04)
Definition statement

This place covers:

Detecting spatial properties of the human or animal body, e.g. lengths, areas, volumes, angles, velocities, accelerations, weights

References
Limiting references

This place does not cover:

Detecting, measuring or recording devices for evaluating the respiratory organs

A61B 5/08

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring instruments specially adapted for dentistry

A61C 19/04

Measuring aids for tailors

A61H 1/00

Analysis of geometric features (lengths, area, volume) from images

G06T 7/60

{Determining colour for diagnostic purposes (measuring colour in general G01J 3/46)}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/1032

media67.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring colour in general

G01J 3/46

{by means of colour cards}
Definition statement

This place covers:

Assessing body features by comparison with colour patterns or atlases

media68.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Colour charts in general

G01J 3/52

{Measuring load distribution, e.g. podologic studies}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/1036

media69.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Gait analysis

A61B 5/112

Apparatus for weighing persons

G01G 19/44

Measuring physical dimensions, e.g. size of the entire body or parts thereof
Definition statement

This place covers:

Measuring spatial dimensions: distances (e.g. length, depth, thickness), angles, areas, volumes etc.

By detecting marker positions:

media70.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring distance in general

G01B 5/00

{measuring angles, e.g. using goniometers (A61B 5/1123 takes precedence)}
Definition statement

This place covers:

Measurements of angles

media71.png

Angle measuring device 6 comprising light source 7 and light detector 8

Processing module is enabled to calculate, from the ratio between the power entered into the light source 7 and the power received by the light detector 8, an angle between the first and second member

References
Limiting references

This place does not cover:

Discriminating types of movement

A61B 5/1123

Informative references

Attention is drawn to the following places, which may be of interest for search:

Goniometers in general

G01B 3/56, G01B 7/30

{measuring distances on the body, e.g. measuring length, height or thickness (A61B 5/1076 takes precedence)}
Definition statement

This place covers:

Rulers, tapes, height measuring device for direct measurement on the body

media72.png

References
Limiting references

This place does not cover:

Measuring interpupillary distance

A61B 3/11

Measuring dimensions inside body cavities

A61B 5/1076

{Measuring volume, e.g. of limbs}
Definition statement

This place covers:

media73.png

The arm has been segmented into discrete volumes C1-C10

Circumference measurement is taken at the intersection of each linear segment of centerline 10.

Evaluate changes in the arm volume over time.

References
Limiting references

This place does not cover:

Plethysmography for blood flow assessment based on vessel volume changes

A61B 5/0295

Impedance plethysmography

A61B 5/0535

Whole-body plethysmography for respiration assessment based on chest volume changes

A61B 5/0806

Impedance pneumography

A61B 5/0809

Measuring bladder volume

A61B 5/204

{for measuring dimensions by non-invasive methods, e.g. for determining thickness of tissue layer (A61B 8/0858 takes precedence)}
Definition statement

This place covers:

All types of apparatus for measuring dimensions non-invasively, e.g. calipers, gauges, templates for measuring on patient images. Also, includes imaging apparatus with measuring scales projected on the image or cursors allowing dimensions to be read from an image.

References
Limiting references

This place does not cover:

Endoradiosondes by impedance pneumography

A61B 5/0809

{for measuring dimensions inside body cavities, e.g. using catheters (A61B 3/1005 takes precedence)}
Definition statement

This place covers:

Rulers, height measuring devices for direct measurement inside the body

media74.png

References
Limiting references

This place does not cover:

Measuring distances inside the eye, e.g. thickness of the cornea

A61B 3/1005

Measuring interpupillary distance

A61B 3/11

Measuring dimensions on the body cavities

A61B 5/1072

{Measuring of profiles}
Definition statement

This place covers:

Detect 2- or 3-dimensional contour or profile or shape of objects, e.g. using mechanical elements brought into contact with the body surface:

media75.png

References
Limiting references

This place does not cover:

Optical shape detection:

A61B 5/0064

Measuring volumes of body parts

A61B 5/1073

{by moulding}
Definition statement

This place covers:

Detecting impressions of body parts

media76.png

Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb (for measuring pulse A61B 5/02 {;A61B 5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B 5/721})
Definition statement

This place covers:

Measurement of movement includes the determination of any change in position or orientation, it is not mandatory that a velocity or acceleration is measured.

References
Limiting references

This place does not cover:

Detecting, measuring or recording pulse rate or heart rate

A61B 5/024

Electromyography

A61B 5/0488

Plethysmography

A61B 5/0535, A61B 5/0806

Measuring movement of foreign bodies, e.g. tracking of catheters

A61B 5/06, A61B 6/12, A61B 8/0833, A61B 34/20

Detecting, measuring or recording respiratory frequency

A61B 5/0816

Testing reaction times

A61B 5/162

Ergometry or measuring muscular strength

A61B 5/22

The preceding exclusions apply only in so far as they are not used for measuring movement, such as, e.g. A61B 5/113, or based on measuring movement, e.g. measurement of movement of a finger for determining reaction times.

Measuring for testing the shape, pattern, size or movement of the body or parts thereof for podologic studies during locomotion

A61B 5/1038

Measuring movement for compensation of motion artefacts

A61B 5/721

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring eye movement, e.g. using eye trackers

A61B 3/113

Measuring circulation of blood, e.g. blood flow

A61B 5/026, A61B 6/504, A61B 8/06

Electrooculography

A61B 5/0496

Measuring or inducing nystagmus

A61B 5/4863

Detecting organic movements or changes using ultrasonic, sonic or infrasonic waves

A61B 8/08

Pleximeters

A61B 9/00

Measuring movement in general

G01, e.g. G01P, G01C or G01B

{induced by stimuli or drugs; (A61B 5/1102 takes precedence; investigating medicinal preparations G01N 33/15)}
References
Limiting references

This place does not cover:

Ballistocardiography

A61B 5/1102

Informative references

Attention is drawn to the following places, which may be of interest for search:

Investigating medicinal preparations

G01N 33/15

{Measuring contraction of parts of the body, e.g. organ, muscle (apparatus for measuring work or force in general G01L)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Apparatus for measuring work or force in general

G01L

{Global tracking of patients, e.g. by using GPS}
Definition statement

This place covers:

Patient monitors including means for global position determination, localizing a patient world-wide.

{Local tracking of patients, e.g. in a hospital or private home}
Definition statement

This place covers:

Patient monitors including means for local position determination, e.g. in hospitals, rooms, imaging apparatus.

{Determining posture transitions}
Definition statement

This place covers:

Includes posture transitions from standing to sitting to lying down, etc.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Controlling electrical heart stimulation by body motion

A61N 1/36542

{Fall detection}
Definition statement

This place covers:

Patient position sensing/monitoring with sensors, e.g. carried on the patient, e.g. 3D sensors, mercury switches, for indicating (change to) prone/lying position probably from a fall. May be combined with a timer/physiological sensors/alarm (to remote station). Includes devices for monitoring fall from bed.

{Determining activity level}
Definition statement

This place covers:

Determining a parameter indicative of the degree of overall activity of a subject, e.g. for use in determining caloric consumption.

Special rules of classification

When metabolism is evaluated, e.g. caloric expenditure determined, A61B 5/4866 should additionally be given.

{Determining geometric values, e.g. centre of rotation or angular range of movement}
References
Limiting references

This place does not cover:

Gait analysis

A61B 5/112

{Discriminating type of movement, e.g. walking or running (A61B 5/1116, A61B 5/112 take precedence)}
References
Limiting references

This place does not cover:

Determining posture transition

A61B 5/1116

Gait analysis

A61B 5/112

{Determining motor skills}
Definition statement

This place covers:

Evaluating the degree of mastering a particular task in the form of a specific movement or sequence of movements. In particular for rehabilitation or assessing development of infants.

{using a particular sensing technique}
Definition statement

This place covers:

Details of sensing techniques adapted for measuring movement other than those mentioned in A61B 5/1127 and A61B 5/1128.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

inertial sensors used for measuring movement

A61B 2562/0219

{using markers}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Markers for medical use

A61B 90/39

{using image analysis (A61B 5/1127 takes precedence)}
References
Limiting references

This place does not cover:

Using markers

A61B 5/1127

Informative references

Attention is drawn to the following places, which may be of interest for search:

Extraction of features from images

G06K 9/46

Analysis of motion in images

G06T 7/20

Identification of persons (methods or arrangements for recognising patterns, e.g. fingerprints, G06K 9/00; identification of persons by analysing their voice or speech G10L 17/00)
Definition statement

This place covers:

Means for distinguishing one person from another

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Dental impression cups or articulators

A61C 9/00, A61C 11/00

Pattern recognition, e.g. for recognising finger prints

G06K 9/00

Identification tags

G09F 3/00

using fingerprinting
Definition statement

This place covers:

Apparatus and methods for taking fingerprints from a person. Includes developing latent fingerprints for forensic purposes.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Acquiring fingerprints

G06K 9/00

Audiometering {Evaluation or the auditory system, not limited to hearing capacity (A61B 5/04845, A61B 5/4023 take precedence)}
Definition statement

This place covers:

Evaluating the hearing system

References
Limiting references

This place does not cover:

Otoscopes

A61B 1/227

EEG detecting auditory evoked potentials

A61B 5/04845

Evaluating sense of balance

A61B 5/4023

Hearing aid devices

A61F 11/008, H04R 25/00

Testing of hearing device using in-hear measurements

H04R 29/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Tinnitus treatment

A61F 11/00, H04R 25/75

{evaluating hearing capacity}
Definition statement

This place covers:

Evaluate hearing

{subjective methods}
Definition statement

This place covers:

Evaluation of the hearing without technical means for detecting an auditory characteristics, e.g.:

Vibrating unit for stimulating the ear canal. No sensor is provided:

media77.png

Feedback is provided by the patient by, e.g., a response button:

media78.png

{objective methods}
Definition statement

This place covers:

Detecting physiological response, e.g. EEG, to auditory stimuli:

media79.png

{measuring compliance or mechanical impedance of the tympanic membrane}
Definition statement

This place covers:

Tympanometer (detects acoustic response to a sound generated into the ear canal)

media80.png

Measuring acoustic impedance (frequency response) of the outer ear in general:

media81.png

{evaluating tinnitus}
Definition statement

This place covers:

Apparatus for detecting, testing, evaluating or measuring tinnitus comprising a generator for generating tinnitus masking sound based on the detected tinnitus features

media685.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Masking sound in general

G10K 11/175

Deaf-aid sets that provide electric tinnitus maskers

H04R 25/75

Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; {Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue} (measuring of blood pressure or blood flow A61B 5/02; non-radiation detecting or locating of foreign bodies in blood A61B 5/06)
Definition statement

This place covers:

Apparatus for detecting, measuring or recording characteristics of blood, body fluids or tissues in-vivo. Determining chemical characteristics, e.g. measuring the concentration of an analyte. Determining constituents of blood or body fluids, e.g. haematocrit. The measurement is performed on the body, i.e. in-vivo, or immediately after a sample of body fluid has been obtained, e.g. by lancet.

References
Limiting references

This place does not cover:

Detecting, measuring or recording for diagnosis using light, e.g. detecting cancer, fatty tissue

A61B 5/0059

Measuring blood pressure or blood flow

A61B 5/02

Non-radiation detecting or locating of foreign bodies in blood

A61B 5/06

Investigating or analysing materials by determining their chemical or physical properties in general

G01N

Investigating or analysing biological material in vitro, physical analysis

G01N 33/483

Chemical analysis of biological material

G01N 33/50

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring blood composition characteristics of a patient undergoing therapy, e.g. for controlling the administration of therapy

A61M 2230/20

Controlling electrotherapy using a parameter of a chemical substance in blood

A61N 1/36557

Measuring blood composition characteristics of a user of sports apparatus

A63B 2230/20

Special rules of classification

Combinations of several characteristics are common. Classification in more than one EC subgroup takes place if the apparatus is specially adapted for detecting, measuring or recording a particular characteristic. An indexing code is used where a characteristic is explicitly mentioned, but no details of specially adapted apparatus are given.

{invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors (A61B 5/1459, A61B 5/1464, A61B 5/1473, A61B 5/1482, A61B 5/14865 take precedence)}
References
Limiting references

This place does not cover:

Using invasive optical sensors

A61B 5/1459

Optical sensors specially adapted for foetal tissue

A61B 5/1464

Using invasive chemical or electrochemical sensors

A61B 5/1473

Chemical or electrochemical sensors specially adapted for foetal tissue

A61B 5/1482

Using invasive enzyme electrodes

A61B 5/14865

Informative references

Attention is drawn to the following places, which may be of interest for search:

Constructional details of invasive sensing devices

A61B 5/6847

Catheters, e.g. for introducing media or for drainage

A61M 25/00

{for measuring glucose, e.g. by tissue impedance measurement}
Definition statement

This place covers:

Apparatus for detecting, measuring or recording glucose. Apparatus for continual monitoring of glucose with analysis of glucose data to determine trends, e.g. to optimise insulin administration. Apparatus for measuring glucose in combination with an insulin pump. Apparatus for glucose measurement in-vivo or combination with fluid or blood sampling where the measurement is made immediately after sampling the fluid, e.g. by lancet.

Relationships with other classification places

A61B 5/14532 is given for glucose, and the corresponding subgroup for the measurement technique, e.g. A61B 5/14532 and A61B 5/1486. Classification of glucose measurement in combination with blood or fluid sampling is covered by A61B 5/15-A61B 5/157 (apparatus for blood sampling). Test strips with no further disclosure of interaction with the patient is covered by G01N.

References
Limiting references

This place does not cover:

Devices for bringing media into the body in a subcutaneous, intravascular or intramuscular way

A61M 5/00

Measuring or testing processes involving enzymes, enzyme electrodes for glucose

C12Q 1/006

Investigating or analysing biological material in vitro by physical analysis using electrical means for determining glucose content

G01N 27/3271

Details, e.g. test element handling, dispensing or storage not specific to a particular test method

G01N 33/4875

Informative references

Attention is drawn to the following places, which may be of interest for search:

Devices for taking samples of blood characterised by integrated means for measuring characteristics of blood

A61B 5/157

Other medical applications, combined with drug delivery

A61B 5/4839

Measuring blood glucose of a patient undergoing therapy, e.g. for controlling the administration of therapy

A61M 2230/201

Measuring blood glucose of a user of sports apparatus

A63B 2230/202

{for measuring blood gases (A61B 5/14551 takes precedence)}
References
Limiting references

This place does not cover:

Measuring blood gases using optical sensors

A61B 5/14551

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring blood gases of a patient undergoing therapy, e.g. for controlling the administration of therapy

A61M 2230/202; K61B230/20D

Measuring blood gases of a user of sports apparatus

K61B230/20C; A63B 2230/207

using optical sensors, e.g. spectral photometrical oximeters
Definition statement

This place covers:

Apparatus for detecting, measuring or recording chemical characteristics of blood, body fluids or tissue using optical sensors, where the measurement is made in-vivo or on a blood of fluid sample immediately after sampling, e.g. measurement is made immediately after sampling by lancet.

References
Limiting references

This place does not cover:

Investigating or analysing materials by the use of optical means

G01N 21/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Detecting, measuring or recording for diagnostic purposes using light, e.g. for detection of tumour

A61B 5/0059

Detecting, measuring or recording heart rate using photoplethysmograph signals

A61B 5/02416

{Details of sensors specially adapted therefor}
Definition statement

This place covers:

Details of optical sensor construction for pulse oximetry. Sensors particularly adapted for attachment to parts of the body, e.g. earlobe clips, finger clips, adhesive patches etc.. Arrangements of optical sensors in housing or probes.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Detecting, measuring or recording heart rate using photoplethysmograph signals, details of sensor

A61B 5/02427

Details of optical sensors

A61B 2562/0233

{specially adapted for cerebral tissue}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Evaluating the central nervous system

A61B 5/4076

Sensors mounted on head worn items, e.g. helmet or cap

A61B 5/6803

{specially adapted for the eye fundus}
Definition statement

This place covers:

Apparatus for making pulse oximetry measurements at the eye fundus, comprising optical sensors for detecting changes in light characteristics reflected from the eye fundus.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Apparatus for looking at the eye fundus

A61B 3/12

{by fluorescence (A61B 5/14555 takes precedence)}
Definition statement

This place covers:

Pulse oximetry using measured change in the fluoresence of light. Includes the use of fluorescent agents.

References
Limiting references

This place does not cover:

Measuring blood gases specially adapted for the eye fundus

A61B 5/14555

Investigating or analysing materials by the use of light, optically excited fluorescence

G01N 21/64

{specially adapted to extracorporeal circuits}
Definition statement

This place covers:

Apparatus for detecting, measuring or recording chemical characteristics of blood, body fluids or tissue where the measurement is made in an extracorporeal circuit attached to the patient, e.g. a blood dialysis machine attached to a patient by a catheter. Apparatus for measuring in an external fluid line, e.g. measurement cassette connected to the patient's blood circulation by a catheter.

References
Limiting references

This place does not cover:

Investigating or analysing materials by the use of optical means, flow through cuvettes

G01N 21/05

Informative references

Attention is drawn to the following places, which may be of interest for search:

Other treatment of blood in extracorporeal circuits

A61M 1/3621

Measuring blood gas characteristics of a patient undergoing therapy

A63B 2230/205

{by polarisation}
Definition statement

This place covers:

Pulse oximetry using the measured change in the polarisation characteristic of light.

References
Limiting references

This place does not cover:

Investigation or analysing materials by the use of optical means, using polarisation-affecting properties

G01N 21/21

invasive, e.g. introduced into the body by a catheter {(A61B 5/1464 takes precedence)}
References
Limiting references

This place does not cover:

Using optical sensors specially adapted for foetal tissue

A61B 5/1464

Informative references

Attention is drawn to the following places, which may be of interest for search:

Constructional details of invasive sensing devices

A61B 5/6847- A61B 5/6866

specially adapted for foetal tissue
Definition statement

This place covers:

Apparatus for detecting, measuring or recording of characteristics of blood, body fluid or tissue using optical sensors specially adapted for foetal or neonatal monitoring.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Using chemical or electrochemical methods specially adapted for foetal tissue

A61B 5/1482

using chemical or electrochemical methods, e.g. by polarographic means {(A61B 5/1486 takes precedence)}
Definition statement

This place covers:

Apparatus for detecting, measuring or recording chemical characteristics of blood, body fluids or tissue using chemical or electrochemical sensors, where the measurement is made in-vivo or on a blood or fluid sample immediately after sampling, e.g. sampling by lancet. Includes apparatus for measuring in an external fluid line, e.g. measurement cassette connected to the patient's blood circulation.

References
Limiting references

This place does not cover:

Using enzyme electrodes

A61B 5/1486

Investigating or analysing biological material in vitro by using electrochemistry

G01N 33/48707

invasive, e.g. introduced into the body by a catheter {(A61B 5/1482 takes precedence)}
References
Limiting references

This place does not cover:

Using chemical or electrochemical methods specially adapted for foetal tissue

A61B 5/1482

Informative references

Attention is drawn to the following places, which may be of interest for search:

Constructional details of invasive sensing devices

A61B 5/6847 - A61B 5/6866

specially adapted for foetal tissue
References
Limiting references

This place does not cover:

Using optical methods specially adapted for foetal tissue

A61B 5/1464

using enzyme electrodes, e.g. with immobilised oxidase
References
Limiting references

This place does not cover:

Measuring or testing processing involving enzymes, enzyme electrodes

C12Q 1/001

Investigating or analysing biological material in vitro by using electrochemistry

G01N 27/3271

{invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Constructional details of invasive sensing devices

A61B 5/6847 - A61B 5/6866

Calibrating or testing of in-vivo probes
References
Limiting references

This place does not cover:

Investigating or analysing materials by the use of optical means, detection standards or calibrating

G01N 21/93

Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of apparatus for calibration, e.g. calibration protocols

A61B 2562/0223

Sensors provided with means for identification combined with means for recording calibration data, e.g. on memory chip

A61B 2562/085

Devices for taking samples of blood (hypodermic syringes A61M 5/178)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Hypodermic syringes

A61M 5/178

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Piercing element

skin penetrating component, e.g. blade, needle, lancet, laser beam

piercing or lancing device

device ready to be used for lancing

driving device

device for driving a piercing element, e.g. spring

Devices for psychotechnics (using teaching or educational appliances G09B 1/00 - G09B 7/00); Testing reaction times {; Devices for evaluating the psychological state}
Definition statement

This place covers:

Apparatus for detecting, measuring or recording the psychological state of a subject from physiological measurements. Any type of measurement may be applied, e.g. skin resistance, motion activity.

References
Limiting references

This place does not cover:

Testing capability using educational aids or toys

G09B 1/00- G09B 7/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Detecting using light

A61B 5/0059

Detecting bioelectric signals

A61B 5/04

Detecting using MRI

A61B 5/055

Measuring movement of the body or parts thereof for determining motor skills

A61B 5/1124

Devices or methods to cause a change in the state of consciousness

A61M 21/00

Special rules of classification

Classification is made in A61B 5/16 in combination with a physiological measurement, e.g. A61B 5/16 and A61B 5/0531, when appropriate.

{Flicker fusion testing (eye testing A61B 3/00)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Eye testing

A61B 3/00

{Testing reaction times}
References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Reaction-time training with a substantial physical effort

A63B 69/0053

Informative references

Attention is drawn to the following places, which may be of interest for search:

Determining motor skills

A61B 5/1124

Reaction-time games

A63F 9/0096

{by tracking eye movement, gaze, or pupil change}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Devices for examining the eye

A61B 3/00

Acquiring or recognizing eyes, e.g. iris verification

G06K 9/00597

Processing of images of the eye

G06T 2207/30041

for vehicle drivers {or machine operators}
Definition statement

This place covers:

Apparatus for detecting, measuring or recording the state of alertness or consciousness of drivers or machine operators from physiological measurements. Any type of measurement may be applied, e.g. tracking eye motion, measuring heart rate.

References
Limiting references

This place does not cover:

Testing capability using educational aids or toys

G09B 1/00- G09B 5/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Safety devices for propulsion-unit control responsive to incapacity of driver

B60K 28/06

Alarms responsive to an undesired or abnormal condition indicating sleep

G08B 21/08

for measuring urological functions {restricted to the evaluation of the urinary system (A61B 5/4375 takes precedence)}
Definition statement

This place covers:

Evaluation of the urinary system.

Urine collection bags comprising urine sensors

References
Limiting references

This place does not cover:

Evaluating the male reproductive system

A61B 5/4375

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring contraction of body parts

A61B 5/1107

Measuring constituents of body fluids other than blood

A61B 5/14507

Devices for taking urine samples

A61B 10/007

{Assessing renal or kidney functions}
Definition statement

This place covers:

Evaluate renal function, e.g. detect renal failure

1) By urine analysis:

media83.png

detecting a change in a urinary parameter indicative of a kidney malfunction, e.g. pH, a sodium level, an oxygen level, a potassium level.

2) By blood analysis:

media84.png

Fluorescent molecules are introduced into the blood stream.

Over a period of time, a measurement of the intensities of the reporter and marker fluorescent molecules is taken.

A ratio is calculated to determine a glomerular filtration rate and therefore the health of the subject's kidney.

References
Limiting references

This place does not cover:

Dialysis systems

A61M 1/14

{Assessing bladder functions, e.g. incontinence assessment}
Definition statement

This place covers:

media85.png

Detection of urine flow:

media86.png

Flow detector 30 is configured to detect the onset of urination. For example, flow detector 30 generates a flow signal 32 upon detecting a flow of urine.

References
Limiting references

This place does not cover:

Electromyography of urinary organs

A61B 5/04882

Assessing bladder internal pressure

A61B 5/205

Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrical stimulation of urinary organs to alleviate incontinence

A61N 1/36007

{Determining bladder volume}
Definition statement

This place covers:

media87.png

System 10 determines the filling status of a urinary bladder 12 of a patient 14 based on electrical impedance of the bladder

References
Limiting references

This place does not cover:

Measuring bladder volume using ultrasound imaging

A61B 8/08, G06T 7/62

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring contraction of body parts

A61B 5/1107

{Determining bladder or urethral pressure}
Definition statement

This place covers:

media88.png

{adapted to determine urine quantity, e.g. flow, volume}
Definition statement

This place covers:

Measuring quantity of urine

media89.png

Ergometry; Measuring muscular strength or the force of a muscular blow ({exercising apparatus A63B 21/00} ; measuring of work or force in general G01L)
References
Limiting references

This place does not cover:

Measuring contraction of parts of the body, e.g. organ, muscle

A61B 5/1107

Informative references

Attention is drawn to the following places, which may be of interest for search:

Exercising apparatus

A63B 21/00

Measuring of work or force in general

G01L

{of masticatory organs, e.g. detecting dental force (measuring instruments for dentigraphy A61C 19/04)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring instruments for dentigraphy

A61C 19/04

{Detecting, measuring or recording for evaluating the nervous system (A61B 5/4806, A61B 5/4821, A61B 5/4824 take precedence)}
References
Limiting references

This place does not cover:

Evaluation of sleep, anaesthesia, pain

A61B 5/4806, A61B 5/4821, A61B 5/4824

{for evaluating the sensory system (A61B 5/12, A61B 5/4058 take precedence)}
Definition statement

This place covers:

Evaluate sensations, e.g.:

Temperature sensitivity:

media90.png

References
Limiting references

This place does not cover:

Diagnostic temperature sensing

A61B 5/01

Audiometry

A61B 5/12

Evaluating the central nervous system

A61B 5/4058

{Evaluating olfaction, i.e. sense of smell}
Definition statement

This place covers:

1) Manual odour test using odour samples

media91.png

2) Automatic test device

media92.png

  • Dispensing a controlled amount of volatile fluid
  • Determining if the patient has sensed the volatile fluid
  • Dispensing an increased quantity of volatile fluid if the patient has not sensed the volatile fluid or a reduced quantity of volatile fluid if the patient has sensed the volatile fluid.
{Evaluating sense of taste}
Definition statement

This place covers:

1) Manual test using taste samples;

media93.png

Each strip 22, 32 is comprised of a thin layer 23, 33 of material with a specific taste.

2) Automatic taste sensor

media94.png

{Evaluating sense of balance}
Definition statement

This place covers:

Evaluate forces applied by the patient to maintain balance, possibly while perturbing her balance

media95.png

{for evaluating the peripheral nervous systems (A61B 5/04001 takes precedence)}
References
Limiting references

This place does not cover:

For evaluating the sensory system

A61B 5/04001

{Evaluating the autonomic nervous system}
Definition statement

This place covers:

Evaluate sympathetic/parasympathetic activity

media96.png

{for evaluating the central nervous system (A61B 5/4806, A61B 5/4821 take precedence)}
References
Limiting references

This place does not cover:

EEG

A61B 5/0476

Sleep evaluation

A61B 5/4806

Pain perception evaluation

A61B 5/4821

Using MRI

G01R 33/4806, G01N 24/08

{Evaluating the brain (A61B 5/031, A61B 5/0476, A61B 5/14553 take precedence)}
Definition statement

This place covers:

Various regions of the brain 108 may be colour coded according to a scale 112 to represent the cortical thickness, or deviation from normal thickness

media97.png

References
Limiting references

This place does not cover:

Intracranial pressure measurements

A61B 5/031

EEG

A61B 5/0476

Devices for psychotechnics

A61B 5/16

{Evaluating the spinal cord (A61B 5/4896 takes precedence)}
Definition statement

This place covers:

media98.png

References
Limiting references

This place does not cover:

Epidural space location

A61B 5/4896

{Diagnosing or monitoring particular conditions of the nervous system (A61B 5/4821, A61B 5/4824 take precedence)}
References
Limiting references

This place does not cover:

Determining level of anaesthesia

A61B 5/4821

Determining pain perception

A61B 5/4824

{Diagnosing or monitoring movement diseases, e.g. Parkinson, Huntington or Tourette}
Definition statement

This place covers:

media99.png

{Diagnosing of monitoring cognitive diseases, e.g. Alzheimer, prion diseases or dementia}
Definition statement

This place covers:

All types of diagnostic apparatus and methods for diagnosing or monitoring cognitive diseases. Includes objective type measurement apparatus, e.g. measuring a physical characteristic of the brain tissue and subjective type apparatus, e.g. for applying cognitive tests to the patient.

media100.png

{Diagnosing or monitoring seizure diseases, e.g. epilepsy}
Definition statement

This place covers:

Assess seizures based on detected movement patterns, heart rate variability, EEG etc.

media101.png

{Detecting or monitoring allergy or intolerance reactions to an allergenic agent or substance}
Definition statement

This place covers:

Evaluation of allergies or intolerances, with or without sensors of physiological quantities:

media102.png

{Detecting or monitoring sepsis}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/412

media103.png

{Monitoring transplanted tissue or organ, e.g. for possible rejection reactions after a transplant}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/413

media104.png.

References
Limiting references

This place does not cover:

Monitoring explanted organs (i.e., between explantation and implantation)

A01N 1/02

{Evaluating particular organs or parts of the immune or lymphatic systems}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/414

. media105.png

{Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems (A61B 1/00, A61B 5/4857, A61B 5/486, A61B 5/4866, A61B 5/4869 take precedence)}
References
Limiting references

This place does not cover:

Gastrointestinal endoscopy

A61B 1/00, A61B 8/12

Catheters for measuring non-vascular pressure

A61B 5/036

EMG in gastro-intestinal tract

A61B 5/04884

Biorhythm

A61B 5/4857

Measuring sweat production

A61B 5/486

Evaluating metabolism

A61B 5/4866

Determining consituents of the body

A61B 5/4869

{Evaluating swallowing}
Definition statement

This place covers:

Evaluating swallow actions

media106.png

{Diagnosing or evaluating reflux}
Definition statement

This place covers:

Backflow detection from stomach to oesophagus, e.g. by impedance measurement with a balloon catheter:

media107.png

{Diagnosing or evaluating gastrointestinal ulcers}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/4216:

by pH measurement in the gastrointestinal system

media108.png

{Evaluating particular parts, e.g. particular organs}
Definition statement

This place covers:

Evaluating oesophagus, stomach, liver, pancreas, intestines, endocrine glands

media109.png

{endocrine glands, i.e. thyroid, adrenals, hypothalamic, pituitary}
Definition statement

This place covers:

Determining the activity of endocrine glands, e.g. determining the response of the hypothalamus to stimulation.

media110.png

{oesophagus}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/4233

media111.png

{stomach}
Definition statement

This place covers:

Evaluating the function or state of the stomach, e.g. determining the amount of food or drink ingested.

media112.png

{liver}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/4244

media113.png

{pancreas}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/425

For example, electropancreatography:

media114.png

{Intestines, colon or appendix}
Definition statement

This place covers:

Evaluating the function or state of the intestines, colon or appendix, for example, identification of intestinal ischemia

media115.png

{Evaluating exocrine secretion production (A61B 3/101 takes precedence)}
Definition statement

This place covers:

Sweat, sebum, saliva, gastrointestinal secretions, mammary secretions, vaginal secretions

References
Limiting references

This place does not cover:

Tear secretion

A61B 3/101

{sweat secretion}
Definition statement

This place covers:

Detect, e.g., alcohol content in perspiration fluid

media116.png

{sebum secretion}
Definition statement

This place covers:

Reagent changing colour according to sebum concentration

media117.png

{saliva secretion}
Definition statement

This place covers:

Evaluation of saliva flow rate

media118.png

{vaginal secretions}
Definition statement

This place covers:

All types of evaluations of vaginal secretion including rate of production, viscosity etc.

For example, evaluating pH of vaginal secretions

media119.png

{Breast evaluation or disorder diagnosis (A61B 5/0091 takes precedence)}
Definition statement

This place covers:

All types of apparatus and methods for evaluating the breasts, including measurement of breast size and diagnosis of breast disorders, e.g. by detecting properties of the breasts

media120.png

References
Limiting references

This place does not cover:

Optical mammography

A61B 5/0091

X-ray mammography

A61B 6/502, A61B 6/0435

Ultrasound mammography

A61B 8/0825

{Evaluation of the lower reproductive system (A61B 5/4343 takes precedence)}
Definition statement

This place covers:

Evaluations of the uterus, fallopian tubes, ovaries, cervix, vagina

media121.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Pregnancy and labour monitoring

A61B 5/4343

{of the cervix (A61B 5/435 takes precedence)}
References
Limiting references

This place does not cover:

Assessing cervix alteration

A61B 5/435

{Pregnancy and labour monitoring, e.g. for labour onset detection}
Definition statement

This place covers:

Monitoring pregnancy and labour

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Detecting uterine fluid pressure

A61B 5/033

{Assessing cervix alteration or dilation}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/435

media122.png

{Assessing uterine contractions (A61B 5/033 takes precedence)}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/4356

media123.png

media124.png

References
Limiting references

This place does not cover:

Measuring pressure of intrauterine fluid

A61B 5/033

{Assessing foetal parameters}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/4362

media125.png

{Sexual arousal evaluation}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/4368

media126.png

{Prostate evaluation or disorder diagnosis}
Definition statement

This place covers:

Illustrative example of a device for examining the prostate

media127.png

References
Limiting references

This place does not cover:

Colonoscopes

A61B 1/00

{Testicles, seminal vesicles or sperm ducts evaluation}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/4387

E.g. estimate drug dosage as a function of testicle size

media128.png

{Sexual arousal or erectile dysfunction evaluation, e.g. tumescence evaluation}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/4393

media129.png.

{Detecting, measuring or recording for evaluating the integumentary system, e.g. skin, hair or nails (A61B 5/117 takes precedence)}
References
Limiting references

This place does not cover:

Identification of persons

A61B 5/117

{Skin evaluation, e.g. for skin disorder diagnosis}
References
Limiting references

This place does not cover:

Evaluation of skin sensitivity

A61B 5/4827

Informative references

Attention is drawn to the following places, which may be of interest for search:

Determining colour for diagnostic purposes

A61B 5/1032

Colour measurement in general

G01J 3/46

{Evaluating skin mechanical properties, e.g. elasticity, hardness, texture, wrinkle assessment}
Definition statement

This place covers:

Determining skin hardness, elasticity, tenderness, stiffness, pliability, laxity, mobility

media130.png.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring roughness of surfaces in general

G01B 11/30

{Evaluating skin constituents, e.g. elastin, melanin, water}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/443

media131.png

{Evaluating skin marks, e.g. mole, nevi, tumour, scar}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/444

media132.png

{Evaluating skin irritation or skin trauma, e.g. rash, eczema, wound, bed sore}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/445

media133.png

References
Limiting references

This place does not cover:

Measuring contraction of wounds

A61B 5/1109

{Scalp evaluation or scalp disorder diagnosis, e.g. dandruff}
Definition statement

This place covers:

Evaluate scalp conditions:

media134.png

{Hair evaluation, e.g. for hair disorder diagnosis}
Definition statement

This place covers:

All types of apparatus or methods for evaluating the hair and disorders of the hair or hair growth in-vivo.

For example, evaluating hair density:

media135.png

Illustrative example, evaluating hair colour:

media136.png

References
Limiting references

This place does not cover:

Detecting, measuring or recording using colour cards

A61B 5/1034

Informative references

Attention is drawn to the following places, which may be of interest for search:

Colour evaluation in general

A61B 5/1032

{Nail evaluation, e.g. for nail disorder diagnosis}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 5/449

media137.png

References
Limiting references

This place does not cover:

Detecting, measuring or recording using colour cards

A61B 5/1034

Informative references

Attention is drawn to the following places, which may be of interest for search:

Colour evaluation in general

A61B 5/1032

{For evaluating or diagnosing the musculoskeletal system or teeth (A61B 5/1036, A61B 5/1074, A61B 7/006 take precedence)}
References
Limiting references

This place does not cover:

Measuring for testing the shape, pattern, size or movement of the body or parts thereof for podologic studies

A61B 5/1036

Foot measuring devices

A61B 5/1074

Detecting skeletal, cartilage or muscle noise

A61B 7/006

Informative references

Attention is drawn to the following places, which may be of interest for search:

Particular body parts of the musculoskeletal system

A61B 5/4538

Positioning the sensor in relation to a particular body part of the musculoskeletal system

A61B 5/68

{Bones (A61B 5/4547 takes precedence)}
References
Limiting references

This place does not cover:

Evaluating teeth

A61B 5/4547

Informative references

Attention is drawn to the following places, which may be of interest for search:

Examining bone tissue using radiation diagnosis

A61B 6/505

Examination of bone material using ultrasonic, sonic or infrasonic waves

A61B 8/0875

{Muscles (A61B 5/0488, A61B 5/224 take precedence)}
References
Limiting references

This place does not cover:

Electromyography

A61B 5/0488

Measuring muscular strength

A61B 5/224

{Joints (A61B 5/4533, A61B 5/4538 take precedence)}
Definition statement

This place covers:

Testing joints for stability or strength, e.g. knee laxity.

References
Limiting references

This place does not cover:

Evaluating or diagnosing ligaments

A61B 5/4533

Informative references

Attention is drawn to the following places, which may be of interest for search:

Goniometers

A61B 5/1071

{Evaluating teeth}
References
Limiting references

This place does not cover:

Measuring using light, adapted to oral or dental tissue

A61B5/00P8

Testing vitality of teeth by means of electric currents or magnetic fields

A61B 5/0534

Detecting tooth mobility

A61B 5/1111

{Evaluating static posture, e.g. undesirable back curvature (A61B 5/1116 takes precedence)}
Definition statement

This place covers:

Determining a static posture of the body,e.g. whether a person is standing, sitting or lying. Includes also determination of spinal posture due to curvature or inclination

References
Limiting references

This place does not cover:

Measuring movement of the entire body or parts thereof for determining posture transitions

A61B 5/1116

{Other medical applications}
Definition statement

This place covers:

Apparatus and methods for measuring, detecting, recording or evaluating medical applications condtions not otherwise provided for.

Relationships with other classification places

This group is the residual group of A61B 5/00.

{Speech analysis specially adapted for diagnostic purposes}
Definition statement

This place covers:

Speech analysis for diagnostic purposes, e.g. evaluating speech disorders, evaluating speech for determining a subject's psychological state.

References
Limiting references

This place does not cover:

Speech analysis for identification of individuals

A61B 5/117 and G07C 9/00158

Informative references

Attention is drawn to the following places, which may be of interest for search:

Speech analysis per se

G10L

{Sleep evaluation (A61B 5/4821 takes precedence; devices for inducing sleep A61M 21/02)}
Definition statement

This place covers:

Apparatus or methods for monitoring or analysis of sleep.

References
Limiting references

This place does not cover:

Determining level or depth of anaesthesia

A61B 5/4821.

Informative references

Attention is drawn to the following places, which may be of interest for search:

Devices for inducing sleep

A61M 21/02.

{Sleep quality}
Special rules of classification

Determining sleep quality may comprise sleep detection as in A61B 5/4809 or detecting sleep stages as in A61B 5/4812. In this case also A61B 5/4809 and/or A61B 5/4812 should be given.

{Sleep apnoea}
Definition statement

This place covers:

Monitoring or investigating sleep apnoe, e.g. multiparameter monitoring or polysomnography. Also for SIDS.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

SIDS

sudden infant death syndrome.

{Determining level or depth of anaesthesia (A61B 5/1106 takes precedence)}
Definition statement

This place covers:

Determining/detecting/monitoring the level of anaesthesia by measuring a physiological parameter, e.g. EEG, EMG, etc.

References
Limiting references

This place does not cover:

Measuring movement of the entire body or parts thereof to asses neuromuscular blockade

A61B 5/1106

Electric apparatus for detecting reflex action

A61B 9/005

Introducing anaesthetics

A61M

{Touch or pain perception evaluation (A61B 5/4821 takes precedence)}
Definition statement

This place covers:

Testing/indicating/recording/assessing level of pain for all parts of the body. Includes all types of apparatus, e.g. charts, expert systems, questionnaires etc.

References
Limiting references

This place does not cover:

Determining level or depth of anaesthesia

A61B 5/4821

Informative references

Attention is drawn to the following places, which may be of interest for search:

Evaluating the nervous system

A61B 5/40

Testing skin sensitivity

A61B 5/4827

{Assessment of subject's compliance to treatment}
Definition statement

This place covers:

Measurement of any physiological parameter indicating subject's compliance with drug therapy or treatment regime. Includes detection of drug or marker in breath, blood, urine etc. by non-invasive measurements and fluid samples, but not for laboratory analysis.

{Diagnosis combined with treatment in closed-loop systems or methods (A61B 5/0036 takes precedence)}
Definition statement

This place covers:

Closed-loop control of therapeutic treatment based on measuring a physiological parameter.

References
Limiting references

This place does not cover:

Features of imaging apparatus including treatment

A61B 5/0036

Informative references

Attention is drawn to the following places, which may be of interest for search:

Sensing and controlling the application of energy in surgical instruments.

A61B 2018/00636

Heart stimulators controlled by a physiological signal

A61N 1/365

{combined with drug delivery}
Definition statement

This place covers:

Measuring a physiological parameter combined with therapeutic drug/medication delivery. Imaging of drug/medication for targeted delivery. Not for delivery of contrast agents/dyes.

References
Limiting references

This place does not cover:

Delivery of contrast agents or dyes

A61B 5/0275, A61B 5/0813, A61B 6/504, A61B 6/481 , A61B 8/481 .

Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of apparatus for drug delivery/infusion

A61N 1/30, A61M 1/00, A61M 5/172, A61M 25/00, A61M 31/00, etc.

{Monitoring progression or stage of a disease}
Definition statement

This place covers:

Measuring a physiological parameter to evaluate the progression or development of a disease over time.

References
Limiting references

This place does not cover:

Monitoring the effects of medication

A61B 5/4848

{Monitoring or testing the effects of treatment, e.g. of medication}
Definition statement

This place covers:

Testing the efficacy or side effects of therapeutic medication.

References
Limiting references

This place does not cover:

Monitoring or testing the effects of anaesthetics

A61B 5/4821

{Prosthesis assessment or monitoring}
Definition statement

This place covers:

Prosthesis assessment or monitoring based on physiological signals. Includes control of prostheses based on physiological signals.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Prostheses as such

A61F 2/00

Control means for non-implantable prostheses

A61F 2/68

{Diagnosis based on concepts of traditional oriental medicine}
Definition statement

This place covers:

Includes, e.g. measurement/analysis of physiological parameter, e.g. pulse, according to oriental or other non-orthodox theories of medicine, e.g. Ayurvedic or Chinese

References
Limiting references

This place does not cover:

Measuring skin impedance specially adapted for acupuncture

A61B 5/0532

Informative references

Attention is drawn to the following places, which may be of interest for search:

Acupuncture needles

A61H 39/086

{Indicating the phase of biorhythm (clocks or watches with indicators for biological cycles G04B 19/264)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Clocks or watches with indicators for biological cycles

G04B 19/264

{Bio-feedback (A61B 5/0482 takes precedence)}
Definition statement

This place covers:

Providing a feedback signal to the subject of a physiological parameter measured from the subject for the purpose of informing the subject to maintain or modify his/her behaviour such that the measured parameter stays within a certain range, e.g. the subject maintains a certain breathing rate.

References
Limiting references

This place does not cover:

Electroencephalography using biofeedback

A61B 5/0482

{Evaluating metabolism (A61B 5/083 takes precedence)}
Definition statement

This place covers:

Apparatus and methods for evaluating the metabolism of the body not involving breath test. Includes measuring basal metabolic rate, determining calorific or energy expenditure from physiological parameters, e.g. heart rate or activity, determining level of radioisotope excretion. Also includes evaluating metabolic syndrome.

References
Limiting references

This place does not cover:

Measuring rate of metabolism by using breath test

A61B 5/083.

Special rules of classification

When evaluation is based on measuring movement, A61B 5/1118 should additionally be given.

{Determining body composition}
Definition statement

This place covers:

Determination of tissue type or evaluating tissue characteristics not covered by other subgroups.

Evaluating a particular tissue type, e.g. for detection of cancer, is dealt with in the subgroups A61B 5/0088, A61B 5/0091, A61B 5/02007, A61B 5/40 - A61B 5/45.

Determination of blood, body fluid or tissue analytes, or blood constituents, e.g. red blood cells, is dealt with in A61B 5/145 and subgroups.

For example, evaluating bone is classified in A61B 5/4504; evaluating skin cells is found in A61B 5/441 and subgroups.

References
Limiting references

This place does not cover:

Using light to evaluate oral or dental tissue

A61B 5/0088

Using light for mammography, e.g. for tumour detection

A61B 5/0091

Evaluating blood vessel condition, e.g. elasticity, compliance

A61B 5/02007

Measuring body composition by impedance

A61B 5/0537.

Measuring characteristics of blood, body fluids or tissues

A61B 5/145

Evaluating the nervous system

A61B 5/40

Evaluating the immune or lymphatic system

A61B 5/41

Evaluating the gastrointestinal, the endocrine or the exocrine system

A61B 5/42

Evaluating the reproductive system

A61B 5/43

Evaluating the integumentary system

A61B 5/44

Evaluating the musculoskeletal system

A61B 5/45

Informative references

Attention is drawn to the following places, which may be of interest for search:

Apparatus for radiation diagnosis, clinical applications

A61B 6/50

Detecting organ movements or changes, e.g. tumours, cysts, swellings

A61B 8/08

Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample

A61B 10/00

{Body fat}
Definition statement

This place covers:

Appartus and methods for determining the proportion of fat in the body. Includes determining the ratio of fat to fat free mass, e.g. using ultrasound, optical measurements, calipers, flotation tanks.

References
Limiting references

This place does not cover:

Skin gauging

A61B 5/0053

{Hydration status, fluid retention of the body}
Definition statement

This place covers:

Apparatus and methods for determining the proportion of fluid in the body or hydration status, Includes water compartments, extracellular water, intercellular water.

{inducing physiological or psychological stress, e.g. applications for stress testing}
Definition statement

This place covers:

Patient is subjected to stress situation, e.g. exercise, change of posture, drugs or valsalva manoeuvre during measurement of physiological parameters. e.g. to determine rate of recovery/investigate regulatory mechanism (homeostasis).

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring heart rate variability

A61B 5/02405.

{Blood vessels}
Definition statement

This place covers:

Locating blood vessels, e.g. for blood sampling. Applies also to ultrasound location.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Blood vessel location for injecting media

A61M 5/427.

{Nerves}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Examining nerves

A61B 5/04001, A61B 5/40

{Epidural space}
Definition statement

This place covers:

Detect epidural space, e.g. by means of a pressure drop that occurs while introducing the needle of a syringe into the patient's body. When the needle reaches the epidural space the lower pressure in the space causes the pressure in the needle to drop, which is indicated by movement of the syringe plunger.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring spinal fluid pressure

A61B 5/032

Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia

A61B 17/3401

{Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient}
Definition statement

This place covers:

Arrangements for ensuring the correct position for a sensor to detect a physiological quantity on a patient.

It relates to the position of the sensor, independently of the part of the body which is object of the diagnosis. For example, if impedance electrodes are placed on hands and feet to detect an impedance value of the whole body, the corresponding document must be classified in this group even if no diagnosis of hands and feet is carried out.

References
Limiting references

This place does not cover:

Sensors provided on surgical tools for measuring tool-related quantities, e.g., contact between tool and tissue, tool penetration length

A61B 90/06

Measuring instruments for implanting a prosthesis

A61F 2/4657

Informative references

Attention is drawn to the following places, which may be of interest for search:

Foot-measuring devices

A43D 1/02

Attachments on the body, e.g. for measuring

A63B 69/3608

Car sensors for detecting driver's condition

B60K 28/00

Computers with physiological sensor to allow interaction with the user

G06F 3/011, G06F 3/033, G06F 3/048

{specially adapted to be attached to or worn on the body surface}
Definition statement

This place covers:

Means for attaching a sensor to a patient's body or for positioning a sensor in contact with a patient's body

{Sensor mounted on worn items}
Definition statement

This place covers:

Any kind of clothing which is specially adapted to position a sensor in contact with the body

{Head-worn items, e.g. helmets, masks, headphones or goggles}
Definition statement

This place covers:

Sensors for measurement on the head. Includes headbands, head straps, masks, spectacles, helmets and caps.

media138.png

References
Limiting references

This place does not cover:

Measurement on the eye

A61B 3/00

Sensors to be placed on foetus's head

A61B 5/0448

{Garments; Clothes}
Definition statement

This place covers:

Sensor is mounted in a garment i.e. resembles clothing, not just straps.

Also for sensors in textiles and fabrics.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Garments adapted to accommodate electronic equipment

A41D 1/002

Patients' vests with incorporated sensors

A41D 13/1281

Wearable computers, e.g. on a belt

G06F 1/163

{Vests}
Definition statement

This place covers:

Sensor is mounted in a garment resembling a vest

media139.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Garments; Clothes

A61B 5/6804

{Gloves}
Definition statement

This place covers:

Sensors mounted in a glove/mitten (not all fingers have to be covered)

  • for measurement on the hand itself wearing the glove;

media140.png

  • for measurement on the other hand, another body part or another person or animal:

media127.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Hand-worn input devices

G06F 3/014

{Footwear}
Definition statement

This place covers:

Sensor mounted in footwear, e.g. shoes, socks.

media142.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Detecting podologic data, e.g. load distribution on feet

A61B 5/1036

Gait analysis

A61B 5/112

Footwear provided with electronic systems

A43B 3/0005

Pedometers

G01C 22/006

{Diapers}
Definition statement

This place covers:

Sensors mounted on or in diapers

media143.png

References
Limiting references

This place does not cover:

Dressings provided with sensor

A61B 5/6833

Absorbent pads, e.g. diapers, with wetness indicators

A61F 13/42

{Wristwatch-type devices}
Definition statement

This place covers:

Sensor is mounted in wristwatch type housing.

May not have time keeping function.

Also includes portable devices for receiving data from a sensor separated from the wristwatch housing, e.g. on finger, for data storage/display/further transmission.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Portable devices for measuring heart rate

A61B 5/02438

{External prosthesis}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electromyography

A61B 5/0488

Control means for non-implantable prostheses

A61F 2/68

Measuring parameters relating to control or test of non-implantable prostheses

A61F 2002/7615

Input arrangements based on EEG, EMG, ECG, GSR

G06F 3/015

{Orthopaedic devices}
Definition statement

This place covers:

Sensor is mounted on external orthopaedic device

media144.png

{Specially adapted to be attached to a specific body part (A61B 5/6802 takes precedence)}
Definition statement

This place covers:

The sensor is suitable for contact with a specific body part, but no particular arrangement is foreseen to provide contact. For example, electrodes to be attached to hands and feet in order to measure whole-body impedance, but no specific attaching means are provided.

References
Limiting references

This place does not cover:

Arrangements to provide contact with a specific body part

A61B 5/6802

{Head}
References
Limiting references

This place does not cover:

Sensor attached to the head of a foetus

A61B 5/0448

Headbands, head straps, masks, spectacles, helmets and caps.

A61B 5/6803

{Ear}
Definition statement

This place covers:

Sensor attached to ear, e.g. as ear clip hooked over the pinna, attached to part of the pinna, not the ear lobe

References
Limiting references

This place does not cover:

Sensor attached to ear canal or ear lobe

A61B 5/6816, A61B 5/6817

Informative references

Attention is drawn to the following places, which may be of interest for search:

{Ear lobe}
Definition statement

This place covers:

Sensor attached to ear lobe.

{Ear canal}
Definition statement

This place covers:

Sensor is used for measurement in or close to the ear canal. Shape is adapted to fit in the ear canal. Includes measurement on the ear drum. Includes construction of ear canal probes for audiometry.

References
Limiting references

This place does not cover:

Instruments for viewing inside the ear canal

A61B 1/227

{Nose}
Definition statement

This place covers:

Sensor is attached to the nose.

References
Limiting references

This place does not cover:

Instruments for viewing inside the nose

A61B 1/233

{Mouth, e.g., oral cavity; tongue; Lips; Teeth}
Definition statement

This place covers:

Sensor is held/mounted/fixed for measurement on and in the mouth, e.g. on the lips, tongue, gums and teeth, including snorkel-like mouthpieces.

References
Limiting references

This place does not cover:

Instruments for viewing inside the mouth

A61B 1/24

Devices using light, specially adapted to mouth and teeth

A61B 5/0088

Impedance measurements for testing vitality of teeth

A61B 5/0534

Devices for collecting breath

A61B 5/097

Identification by dental data

A61B 5/1178

Measuring strength of masticatory organs

A61B 5/228

X-ray for dentistry

A61B 6/14

Depth control for dentistry instruments

A61C 5/44

Mouthpieces in ventilators

A61M 16/0488

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring instruments adapted for dentistry

A61C 19/04

{Eye}
Definition statement

This place covers:

Sensor is attached to or in the vicinity of the eye.

media145.png

References
Limiting references

This place does not cover:

Apparatus for testing the sight

A61B 3/00

{Neck}
Definition statement

This place covers:

Includes necklaces for holding sensors

{Trunk, e.g., chest, back, abdomen, hip}
Special rules of classification

media125.png

{Arm or wrist}
References
Limiting references

This place does not cover:

Blood pressure cuffs

A61B 5/022

Wristwatch-type devices with sensors

A61B 5/681

Informative references

Attention is drawn to the following places, which may be of interest for search:

Portable devices for measuring heart rate

A61B 5/02438

{Hand}
Definition statement

This place covers:

Sensor is attached/positioned for measurement on the hand. Includes resting hand on shaped surface.

References
Limiting references

This place does not cover:

Hand-held ECG devices

A61B 5/0404

Detecting hand motion

A61B 5/1125

Detecting hand force

A61B 5/225

Gloves with sensors

A61B 5/6806

{Finger}
Definition statement

This place covers:

Sensor is used for measurement on the fingers. Includes clamps, wraps, finger receiving cavities, rings. Also for sensors worn by the physician on the fingertips.

References
Limiting references

This place does not cover:

Blood pressure cuffs adapted for fingers

A61B 5/02241

Identification by finger prints

A61B 5/1172

Measuring finger strength

A61B 5/225

Gloves with sensors

A61B 5/6806

{Leg}
Definition statement

This place covers:

Sensor is attached to the leg.

{Foot or ankle}
Definition statement

This place covers:

Sensor is used for measurement on the foot.

References
Limiting references

This place does not cover:

Measuring load distribution on feet

A61B 5/1036

Measuring dimensions of foot

A61B 5/1074

Identification by foot-printing

A61B 5/1174

Footwear with sensors

A61B 5/6807

Informative references

Attention is drawn to the following places, which may be of interest for search:

Foot-measuring devices

A43D 1/02

{Means for maintaining contact with the body (A61B 5/6802 takes precedence)}
Definition statement

This place covers:

Means specially adapted for maintaining contact between different surfaces, specially adapted to maintain contact between a sensor and the human or animal body.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Sensors mounted on worn items

A61B 5/6802

{Straps, bands or harnesses}
Definition statement

This place covers:

Sensor is attached to the body, e.g. chest, shoulders, by straps, bands, harnesses

media147.png

{using adhesives (A61B 5/04087 takes precedence)}
Definition statement

This place covers:

Sensors provided with an adhesive layer for attachment to the skin or body surface that is not a separable or detachable element from the sensor. Includes adhesive applied directly to the skin surface.

References
Limiting references

This place does not cover:

Using conductive adhesive means

A61B 5/04087

{Adhesive patches}
Definition statement

This place covers:

Separate adhesive patch or wrap for attaching the sensor to the patient's skin.

{using vacuum}
Definition statement

This place covers:

Attaching sensor/probe to the skin surface by vacuum.

References
Limiting references

This place does not cover:

Measurement carried out while applying suction

A61B 5/0055

ECG electrodes attached by suction

A61B 5/04082

Foetal ECG electrodes attached by suction

A61B 5/04485

{Supports or holders, e.g., articulated arms}
Definition statement

This place covers:

Positioning or holding sensor relative to the body by mechanical arms, e.g. articulated, sliding, swivelling.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Holding arrangements for endoscopes

A61B 1/00147

Holding arrangements for ultrasound probes

A61B 8/00

{Sutures}
Definition statement

This place covers:

Sensors attached to the surface of the body by means of sutures

{Clamps or clips}
Definition statement

This place covers:

Sensors affixed to the body by means of clamp, e.g. by elastic force

{Anchoring means, e.g. barbs}
Definition statement

This place covers:

Means for anchoring the sensor to the body, i.e..with tissue penetration/piercing. Includes prongs, coils, barbs.

media148.png

{Indicating the position of the sensor on the body}
Definition statement

This place covers:

Means for indicating the correct position of a sensor on the body surface

media149.png

{by using templates}
Definition statement

This place covers:

Template/gauge to assist positioning of sensor on the measurement site.

media150.png

References
Limiting references

This place does not cover:

Sensors mounted on harnesses

A61B 5/6831

{by marking the skin}
Definition statement

This place covers:

Site of sensor attachment is marked/referenced (e.g., by marker) so that the sensor may repositioned on the same site. Includes taking an anatomical reference, e.g. palm-print, photograph.

{Monitoring or controlling sensor contact pressure}
Definition statement

This place covers:

Determining degree of contact between sensor and body surface by any means, e.g. spring bias, inflatable ballons, measuring impedance, measuring applied pressure etc.

{Monitoring or controlling distance between sensor and tissue}
Definition statement

This place covers:

Determining, monitoring or controlling the distance between sensor and body surface in order to ensure consistency of measurements taken by the sensor.

{specially adapted to be brought in contact with an internal body part, i.e. invasive}
Definition statement

This place covers:

Means for attaching or positioning a sensor in contact with an internal part of the patient's body

{mounted on an invasive device}
Definition statement

This place covers:

Sensor is part of an implant (including short-term implants such as needles).

References
Limiting references

This place does not cover:

Endoscopes

A61B 1/00

{Needles}
Definition statement

This place covers:

The sensor is part of a piercing element introduced into the body, e.g. needle, cannula. The sensor is within the body or in the immediate vicinity of its surface.

media151.png

{in combination with a needle set}
Definition statement

This place covers:

The needle/canula is attached to the skin surface by a base plate.

media152.png

{Microneedles}
Definition statement

This place covers:

Details of microneedle sensor construction. Includes multiple microneedles, e.g. arrays as electrodes/analyte sensors.

media153.png

{Guide wires}
Definition statement

This place covers:

Sensor mounted directly in a guidewire. Guidewire is usually introduced with a catheter.

media154.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Catheters with pressure sensors

A61M 2025/0001

{Catheters}
Definition statement

This place covers:

Sensor is mounted on a catheter

media155.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring blood pressure by means inserted into the body

A61B 5/0215

Invasive optical probe

A61B 5/1459

Catheters with pressure sensors

A61M 2025/0001

{with a balloon}
Definition statement

This place covers:

The sensor is mounted on a balloon catheter

{with a distal curved tip}
Definition statement

This place covers:

Sensor mounted on a catheter with a curved tip

{with a distal loop}
Definition statement

This place covers:

Sensor is mounted on a catheter with a looped tip

{with a distal pigtail shape}
Definition statement

This place covers:

Sensor is mounted on a catheter tip with one or more loops, the plane of the loop being perpendicular to the longitudinal axis of the catheter

{with a distal basket, e.g. expandable basket}
Definition statement

This place covers:

Sensor is mounted on a catheter with an expandable basket or cage

{with multiple distal splines}
Definition statement

This place covers:

Sensor is mounted on a catheter with multiple splines/prongs/tines/spines/arms not joined at their distal tips. Splines are usually expandable from a retracted position.

{Permanently implanted devices, e.g. pacemakers, other stimulators, biochips (A61B 5/6861 takes precedence)}
Definition statement

This place covers:

Specific details of sensors mounted on pacemakers...

media156.png

... or on implanted devices comprising a housing like that of a pacemaker

media157.png.

{Capsules, e.g. for swallowing or implanting}
Definition statement

This place covers:

Sensor is mounted on ingestible or implantable capsule, excluding pacemakers.

media158.png

References
Limiting references

This place does not cover:

Ingestible capsules with imaging means

A61B 1/041

{Stents}
Definition statement

This place covers:

Sensor is mounted on a device contacting internal blood vessel walls, e.g. stent.

media159.png

{Burr holes}
Definition statement

This place covers:

Sensor is mounted in a burr hole, e.g. by cranial bolt.

media160.png

{Access ports}
Definition statement

This place covers:

Implants for measuring a physiological parameter with an access port for any application. Includes ports for signal transmission, refilling/replenishing measuring fluid (e.g. enzyme), refilling medication

media161.png

{Extracorporeal blood circuits, e.g. dialysis circuits}
Definition statement

This place covers:

Sensor is mounted on body fluid circuit external to the body. Measurement is carried out during fluid exchange with the body

media162.png

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for controlling media flow into the body

A61M 5/168

{specially adapted to be attached or implanted in a specific body part (A61B 5/6847 takes precedence)}
Definition statement

This place covers:

Sensors suitable for contact with a specific internal body part, but no particular attachment means is foreseen.

References
Limiting references

This place does not cover:

Mounted on an invasive device

A61B 5/6847

{Bladder}
Definition statement

This place covers:

media163.png

References
Limiting references

This place does not cover:

Assessing bladder function

A61B 5/202

Measuring pressure within urogenital tract

A61B 5/205

{Uterus}
Definition statement

This place covers:

media164.png

References
Limiting references

This place does not cover:

Intra-uterine pressure sensors

A61B 5/035

Pregnancy and labour monitoring

A61B 5/4343

{Means for maintaining contact with the body (A61B 5/6847 takes precedence)}
Definition statement

This place covers:

Means specially adapted for maintaining contact between different surfaces, specially adapted to maintain contact between a sensor and internal parts of human or animal body.

References
Limiting references

This place does not cover:

Mounted on an invasive device

A61B 5/6847

Informative references

Attention is drawn to the following places, which may be of interest for search:

Sensors mounted on worn items

A61B 5/6802

{Anchoring means}
Definition statement

This place covers:

Means for anchoring the sensor to body tissue i.e. with tissue penetration/piercing. Includes prongs, coils, barbs

media165.png

{Sutures}
Definition statement

This place covers:

Sensors attached to internal body tissue by sutures

media166.png

{Clamps or clips}
Definition statement

This place covers:

Sensor is used for measurement on the blood vessel. Adapted to be clamped/fitted to the blood vessel.

media167.png.

{Monitoring or controlling sensor contact pressure}
Definition statement

This place covers:

Monitoring contact between sensor and internal tissue by any means, e.g. spring bias, inflatable balloons, expanding baskets/arms, measuring impedance, measuring applied pressure etc. For all body cavities.

media168.png

References
Limiting references

This place does not cover:

Apply compression while taking measurements

A61B 5/0053

Detect tissue strain, i.e., tissue deformation under compression

{Monitoring or controlling distance between sensor and tissue}
Definition statement

This place covers:

Monitoring the spacing between a sensor/probe and internal tissue by any means, e.g. spacer, inflatable balloons. media169.pnghere.

{mounted on external non-worn devices, e.g. non-medical devices}
Definition statement

This place covers:

Sensors which are mounted in or on external devices or apparatus. The sensor is not held continuously in contact with the body, e.g. the body or body part is applied to the sensor for taking a measurement, the sensor is adapted to make a non-contact measurement.

{Cabins}
Definition statement

This place covers:

Sensor mounted in a cabin or booth to provide isolated measurement environment or privacy

media170.png

{Rooms}
Definition statement

This place covers:

Sensors arranged in a room

media171.png

{Furniture}
Definition statement

This place covers:

Sensors arranged on furniture, e.g. includes domestic and hospital furniture.

media172.png

{Mats}
Definition statement

This place covers:

Mat/pad/mattress/cushion with built in sensor for measuring pressure applied by a body part, e.g. used in bed/chair/prosthesis.

media173.png

{Cars}
Definition statement

This place covers:

Sensors arranged in car to monitor the driver

media174.png

{Wheel chairs}
Definition statement

This place covers:

Sensors arranged on a wheel chair

media175.png

{Sport equipment}
Definition statement

This place covers:

Sensors arranged in sports equipment

media176.png

References
Limiting references

This place does not cover:

Determining movement (e.g. motion capture)

A61B 5/1123

Sensors arranged on footwear, garments

A61B 5/6804

Informative references

Attention is drawn to the following places, which may be of interest for search:

Evaluation of athletes

A61B 2503/10

Exercising apparatus with means for tracking a movement path

A63B 69/0017

Exercising apparatus sensing physical parameters related to user's performance

A63B 2220/00

Exercising apparatus sensing physiological parameters of the user

A63B 2230/00

{Toys}
Definition statement

This place covers:

Sensors arranged in a toy

media177.png

{Computer input devices, e.g. mice or keyboards}
Definition statement

This place covers:

Sensors arranged on computer input devices

media178.png

{Portable consumer electronic devices, e.g. music players, telephones, tablet computers}
Definition statement

This place covers:

Sensors arranged on a portable electronic device, e.g. a telephone adapted to sense a physiological parameter.

media179.png

References
Limiting references

This place does not cover:

Monitoring a patient using a global network for transmitting the physiological signals, e.g. telephone network

A61B 5/0022

{Means for positioning the patient in relation to the detecting, measuring or recording means}
Definition statement

This place covers:

Means for ensuring that the patient, or of a part of her body, assumes the correct position during the measurement

media149.png

References
Limiting references

This place does not cover:

Tables for x-ray examinations

A61B 6/04

{Posture restraints}
Definition statement

This place covers:

Means to restrain movement of the patient during the measurement, e.g. platforms, chairs, supports for limbs.

media181.png

{Tables}
Definition statement

This place covers:

Measuring device comprising tables to aid patient positioning during examination. Special adaptations including windows, cut-outs, connections

media182.png

References
Limiting references

This place does not cover:

Means for positioning patients (MRI, CT)

A61B 5/0555, A61B 6/04

{Indicia not located on the patient, e.g. floor marking}
Definition statement

This place covers:

Indicia/markings to aid positioning of patient during examination. It may be on apparatus, support, floor.

media183.png

{Breast positioning means}
Definition statement

This place covers:

media184.png

References
Limiting references

This place does not cover:

Breast positioning means for x-ray or ultrasound examination

A61B 6/502, A61B 6/0414, A61B 8/0825

Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment (analysis of materials using radiation G01N 23/00, detecting hidden objects by radiation G01V 5/0008, radiodiagnostic or X-ray contrast preparations A61K 49/00; radiation therapy per se A61N 5/00; instruments measuring radiation intensity for application in the field of nuclear medicine, e.g. in vivo counting G01T 1/161; apparatus for taking X-ray photographs G03B 42/02; X-ray photographic processes G03C 5/16; irradiation devices G21K; X-ray apparatus or circuits therefor H05G 1/00)
Definition statement

This place covers:

Diagnostic equipments and / or methods involving the use of ionising radiation, e.g. X-ray or gamma ray. Other devices for radiation diagnosis can be found in:

Electric currents or magnetic fields

A61B 5/05

Magnetic resonance

A61B 5/055

Optical imaging

A61B 5/0059

Opto-acoustic imaging

A61B 5/0093

Devices for radiation diagnosis generally consist of complex electro-mechanical arrangements of radiation source and detection units, controlled following a particular acquisition technique to obtain medical diagnostic data relating to a patient's body part. A complete characterization of these devices therefore requires the identification of both constructional and operational aspects according to the following rules.

Relationships with other classification places

media185.png

Several subclasses, groups and subgroups provide for the different components or functional aspects constituting the devices for radiation diagnosis. It should be emphasized that documents describing these components should be classified in A61B 6/00 only if they disclose a radiation diagnostic device and the link between said components or functional aspects and the radiation diagnostic device is not trivial.

As an example, a document describing constructional details of a PET scanner should have the class A61B 6/037 and the corresponding class for said constructional details (a subclass of A61B 6/44). A document describing particular details of a radiation detector should be classified in the corresponding subclass of G01T 1/00, even if a clinical application of said detector is mentioned. However, if, e.g. details of the arrangement of said detector in a scanner for said particular clinical application are disclosed, then it should also be classified in A61B 6/037 and in the corresponding subclass of A61B 6/50.

The same principle applies to other neighbouring fields such as, e.g. image processing (G06T). A document disclosing an algorithm for image enhancement should be classified under the corresponding subclass of G06T, even if the document mentions that the images are x-ray images. However, if the algorithm requires particular constructional or functional details of the radiation diagnostic device, then the document should also be classified in the corresponding subclass of A61B 6/00. On the other hand, if is only mentioned that an algorithm for image enhancement is used but the disclosure deals mainly with details of the radiation diagnostic device, then it should only be classified in A61B 6/00.

References
Limiting references

This place does not cover:

Diagnosis using light

A61B 5/0059

Diagnosis using opto-acoustic effect

A61B 5/0093

Diagnosis using magnetic resonance imaging

A61B 5/055

Navigation during surgery

A61B 34/20

Radiation therapy

A61N 5/00

Investigation of materials using radiation

G01N 23/00

Detecting hidden objects using radiation

G01V 5/0008

Informative references

Attention is drawn to the following places, which may be of interest for search:

Diagnosis using sonic, infrasonic or ultrasonic waves

A61B 8/00

Radio-opaque markers

A61B 90/39

X-ray contrast preparations

A61K 49/04

Preparations containing radioactive substances

A61K 51/00

Radiation therapy per se

A61N 5/00

Nuclear Magnetic Resonance imaging systems

G01R 33/48

Detectors for X-ray, gamma, etc radiation

G01T 1/00

Apparatus for taking X-ray photographs

G03B 42/02

X-ray photographic processes

G03C 5/16

Image data processing

G06T

Medical informatics

G16H

Collimators

G21K 1/02

X-ray tubes

H01J 35/00

X-ray apparatus or circuits therefor

H05G 1/00

Special rules of classification

Some of the sub-groups are related to more constructional aspects and some to more functional aspects. This classification is however not strict, its purpose is only indicative, to simplify the overview of the scheme.

Construction-oriented aspects:

related to the generation of radiation

A61B 6/40, A61B 6/06

related to the detection of radiation

A61B 6/42, A61B 6/06, A61B 6/08

related to the device in general

A61B 6/44, A61B 6/02, A61B 6/10, A61B 6/14, A61B 6/46, A61B 6/56

related to the patient support

A61B 6/04

Operation-oriented aspects:

related to the imaging technique

A61B 6/48, A61B 6/02

related to the clinical application

A61B 6/50, A61B 6/12, A61B 6/14

related to the device control / setup

A61B 6/08, A61B 6/46, A61B 6/52- A61B 6/58

Groups A61B 6/40 - A61B 6/58 do not correspond to former or current IPC groups.

Concordance ECLA - IPC for these groups is as follows:

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

(radiation) source

artificial or natural ionizing radiation emitting element per se, e.g. X-ray tube anode, tracer

(radiation) source unit

constructional arrangement comprising a radiation source and housing, capable of emitting an oriented radiation beam, e.g. X-ray tube

Raw data

data output from the sensor/detector requiring pre-processing to be used for diagnostic purposes

Medical diagnostic data

data readable or interpretable by medical personnel, obtained after pre-processing of raw data

Image data

medical diagnostic data in the form of two- or three-dimensional data sets

Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
Definition statement

This place covers:

Devices and imaging techniques for obtaining images of different planes, i.e. slices of the patient's body, in a sequential way.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring radiation per se

G01T 1/00

Stereoscopic photography

G03B 35/00

Special rules of classification

The term "sequential" is used here for historical reasons, meaning that the device can be configured to obtain an image of a plane and subsequently, only by changing the device configuration and without moving the patient, to obtain a different plane. This aspect is not relevant anymore in the current definition, since a cone-beam CT would obtain images of different planes simultaneously but would still be classified under A61B 6/032.

{Stereoscopic imaging}
Definition statement

This place covers:

Acquisition and/or display of two offset images. Both functional (e.g. stereoscopic imaging technique) and constructional aspects (stereoscopic imaging scanners) of radiation-based stereoscopic imaging.

media186.png

[US2007003007]

{Tomosynthesis}
Definition statement

This place covers:

Classical geometric tomography where opposing motion of the x-ray tube and film housing generate a focal plane. The tube emitted radiation continuously, and consequently the single film integrated x-ray exposure throughout the path of motion. Due to parallax, objects in planes above and below the fulcrum were blurred proportional to their distance from the plane of focus.

media187.png

Modern tomosynthesis where a finite number of projection images are acquired at varying orientations of x-ray tube, patient and detector to reconstruct these arbitrary planes.

media188.png

[Definitions and images from Dobbins and Godfrey, "Digital x-ray tomosynthesis: current stateof the art and clinical potential", Phys. Med. Biol. 48 (2003) R65–R106]

The class covers both functional (e.g. tomosynthesis imaging technique) and constructional aspects (tomosynthesis scanners) of radiation-based tomosynthesis imaging.

References
Limiting references

This place does not cover:

Computed tomography

A61B 6/032

Informative references

Attention is drawn to the following places, which may be of interest for search:

Application mammography

A61B 6/502

Special rules of classification

In modern tomosynthesis the sequence of orientations defines an acquisition trajectory which, if relevant should be classified under A61B 6/027. In case of a circular trajectory of the source and the detector, said rotation is shorter than 180° + fan angle of the beam (acquisition of an incomplete dataset). Of longer then a complete dataset is acquired and the technique is a computerised tomography (A61B 6/032).

This technique is often used for breast imaging; in such a case it should be classified also in A61B 6/502.

{characterised by the use of a particular data acquisition trajectory, e.g. helical or spiral}
Definition statement

This place covers:

Relevant details concerning the sequence of positions of source and detector defining a trajectory along which X-ray images (projections of views) for a subsequent reconstruction are acquired. Diagnostic techniques requiring data acquisition along a particular trajectory are typically:

Computed tomography A61B 6/032

Tomosynthesis A61B 6/025

Helical acquisition trajectory for computed tomography (A61B 6/032):

media189.png

media190.png

[US2003031290]

Partial isocentric motion with stationary detector in tomosynthesis (A61B 6/025):

media191.png

[Dobbins and Godfrey, "Digital x-ray tomosynthesis: current state of the art and clinical potential", Phys. Med. Biol. 48 (2003) R65–R106]B

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Tomosynthesis

A61B 6/025

Computed Tomography

A61B 6/032

Special rules of classification

This class also covers devices where a movement of the source unit is superimposed to e.g. a circular trajectory.

media192.png

[WO2009128063]

Computerised tomographs ({diagnosis by magnetic resonance imaging A61B 5/055;} echo-tomography A61B 8/14)
Definition statement

This place covers:

Measuring from different angles and reconstructing (computing) a 2D image (slice) or a 3D image (set of slices).

This class includes tomography (system or function) which does not fall into the subgroups of transmission tomography (A61B 6/032) or emission tomography (A61B 6/037), or wherein the kind of tomography is not specified.

The class covers both functional (e.g. tomography) and constructional aspects (tomographs) of both transmission and emission tomography imaging.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Optical tomography

A61B 5/0073

Diagnosis using magnetic resonance tomography

A61B 5/055

Echo-tomography

A61B 8/14

Reconstruction from projections

G06T 11/003

Healthcare informatics

G16H

{Transmission computed tomography [CT]}
Definition statement

This place covers:

The source emits a radiation beam from outside the body and the attenuation of the beam is measured by a detector after the beam has traversed the patient's body. This measurement is carried out from different angles and an image (representing the values of the attenuation coefficient of the radiation at every position in space) is reconstructed (computed) from the measurements. A typical configuration consists of an X-ray source unit emitting a 2D dimensional beam in form of a fan (fan-beam) and a curved detector (1 line) which rotate around the patient along a circular trajectory to reconstruct (compute) a 2D image (slice) of the patient on the plane of said circular trajectory.

media193.png

[US2005254621]

To obtain a 3D image (set of slices) the patient table can be moved steadily during acquisition so that the acquisition trajectory of source and detector with respect to the patient becomes a spiral or helix (see A61B 6/027)

The class covers both functional (e.g. computerized tomography) and constructional aspects (computerized tomographs) of transmission tomography imaging.

References
Limiting references

This place does not cover:

Tomosynthesis

A61B 6/025

Special rules of classification

Transmission tomography as a technique that can be carried out with any device capable of acquiring views (projections) from different angles and can rotate at least 180° + fan angle around the patient. Devices with a more constrained rotational trajectory are not capable of performing tomographic imaging and are restricted to perform tomosynthesis (A61B 6/025). If the device is a CT scanner, it should be classified here (A61B 6/032), otherwise said devices are classified according to their constructional features A61B 6/44, e.g. C-arm (A61B 6/4441), robotic arms (A61B 6/4458).

To obtain a 3D image (set of slices) the patient table is moved during acquisition so that the acquisition trajectory of source and detector with respect to the patient becomes a spiral or helix (see A61B 6/027).

Alternatively, a device with a source emitting a cone-beam (A61B 6/4085) combined with a two-dimensional detector (A61B 6/4233) is used. Or both, a particular acquisition trajectory (A61B 6/027) and a cone-beam with a 2D detector (A61B 6/4085 and A61B 6/4233, respectively) are combined.

{Emission tomography (detector details for PET G01T 1/2985, detector details for SPECT G01T 1/1644)}
Definition statement

This place covers:

The source (typically a radioactive tracer) emits radiation from inside the body which is measured outside the body with one or more detectors from different orientations and an image (representing the distribution of the tracer insider the body) is reconstructed (computed) from the measurements.

PET or SPECT scanners are classifed under A61B 6/037

media194.png

[US2011309252]

References
Limiting references

This place does not cover:

Measuring radiation

G01T 1/00

Radiation detection aspects of SPECT imaging

G01T 1/1642

Radiation detection aspects of PET imaging

G01T 1/2985

Informative references

Attention is drawn to the following places, which may be of interest for search:

Optical tomography

A61B 5/0073

diagnosis using magnetic resonance tomography

A61B 5/055

Echo-tomography

A61B 8/14

Special rules of classification

This class covers devices for emission tomography, reconstruction of 2D images (slices) or 3D images (sets of slices). Other devices such as intra-operative gamma cameras should be classified under A61B 6/4258.

Documents concerning details of the detector should be classified under G01T 1/00, and only be classified under A61B 6/037 in the case where relevant details of the emission tomography scanner or the clinical application are disclosed.

Positioning of patients; Tiltable beds or the like (operating tables A61G 13/00; operating chairs A61G 15/00)
Definition statement

This place covers:

Any means, e.g. tables, beds, chairs, suitable for positioning the patient in the diagnostic device.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for positioning patients in magnetic resonance tomography

A61B 5/0555

Positioning of patients in ultrasound diagnostic devices

A61B 8/40

Chairs, beds, mattresses

A47C 1/00- A47C 31/00

Operating tables or chairs

A61G 13/00, A61G 15/00

{Tables or beds}
Definition statement

This place covers:

media195.png

[US2012023671]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for positioning patients in magnetic resonance tomography

A61B 5/0555

Positioning of patients in ultrasound diagnostic devices

A61B 8/40

Hospital beds

A61G 7/00

Operating tables

A61G 13/00

{Tables or beds with compression means}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for positioning patients in magnetic resonance tomography

A61B 5/0555

Application mammography

A61B 6/502

Hospital beds

A61G 7/00

{Tables or beds with means for imaging suspended breasts}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Application mammography

A61B 6/502

{Tables or beds with heating or cooling means}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for cooling other parts of the device for radiation diagnosis

A61B 6/4488

{Servo-controlled positioning}
Definition statement

This place covers:

Positioning of patients controlled by a motor.

media196.png

[US2010020939]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Tracking apparatus position

A61B 6/547

{Supports mounted to ceiling}
Definition statement

This place covers:

media197.png

[EP0490107]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Source unit or detector unit mounted to ceiling

A61B 6/4464

{Endless-band supports}
Definition statement

This place covers:

Conveyor bands or belts for transporting the patient.

media198.png

[US2002112288]

media199.png

[US20110092792]

{Patient positioning chairs}
Definition statement

This place covers:

Patient positioning chairs

media200.png

[EP2289370]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Operating chairs

A61G 15/00

Diaphragms {for particular diagnostic applications, e.g. tomography, i.e. not of general applicability (diaphragms, e.g. variable, or collimators in general G21K 1/02)}
Definition statement

This place covers:

Devices adapted to modify the confinement of the cross-section of the radiation beam, e.g. collimators. Situated between the source unit and the patient.

media201.png

[US2011206185]

References
Limiting references

This place does not cover:

Source combined with filter or grating

A61B 6/4035

Detector combined with grid or grating

A61B 6/4291

Multi-leaf collimators for intensity modulated radiation therapy

A61N 5/1045

Diaphragms/collimators per se

G21K 1/02

Special rules of classification

Rules for classifying other devices situated on the beam path, used to modify properties of the beam:

Filters (A61B 6/4035): modify a property of the beam but not its spatial confinement, e.g. the spectrum, or the intensity distribution.

Gratings: cause diffraction and are used mainly for phase measurements.

Grids: arrangements of blades situated along the detector pixels and used to

block scattered radiation.

Grids and gratings are classified depending on their position:

Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams
Definition statement

This place covers:

Radiation diagnosis devices comprising means for assessing direction and / or extent of the radiation beam before acquisition. The auxiliary means typically consist in a light source (e.g. laser) projecting light from a point near the radiation source towards an imaging region. The projected beam can be point-like or reflect the spatial extent of the radiation beam and is typically used for monitoring / setting the alignment of the source unit with the detector unit (A61B 6/587) and/or the distance between the source unit and the patient (A61B 6/589) and / or detector unit (A61B 6/588).

media202.png

[WO2011141763]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Radiation diagnosis devices with source and detector units movable relative to each other

A61B 6/4452

Alignment of source unit to detector unit

A61B 6/587

Setting distance between source unit and detector unit

A61B 6/588

Setting distance between source unit and patient

A61B 6/589

Application or adaptation of safety means (protection against dangerous radiation in general G21F)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Protection against dangerous radiation

G21F

{Protection against mechanical damage, e.g. anti-collision devices}
Definition statement

This place covers:

Any means for preventing collision between component parts of the device, or between the device and external objects, e.g. patient, other room equipments.

media203.png

[WO2012050148]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Mobile apparatus

A61B 6/4405

Tracking apparatus position

A61B 6/547

{Protection against radiation, e.g. shielding (techniques for handling radiation not otherwise provided for G21K)}
Definition statement

This place covers:

media204.png

[US2012132217]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Protection against effects of non-mechanical surgery

A61B 90/04

Radiation shielding per se

G21F 1/00- G21F 7/00

Techniques for handling radiation

G21K

Devices for detecting or locating foreign bodies (A61B 6/02 takes precedence {; radio-opaque markers A61B 90/39})
Definition statement

This place covers:

Radiation diagnosis devices adapted for localisation or tracking of foreign bodies, i.e. any kind of instrument or tissue which does not belong to the patient body by nature, e.g. tumour, implant, surgical instrument.

media205.png

[answers.com]

References
Limiting references

This place does not cover:

Surgical navigation systems

A61B 34/20

Radio-opaque markers

A61B 90/39

Informative references

Attention is drawn to the following places, which may be of interest for search:

Other imaging methods for locating foreign bodies

A61B 5/06

Generating a temporal series of data

A61B 6/486

Extracting a diagnostic parameter from medical diagnostic data

A61B 6/5217

Locating foreign bodies using ultrasound

A61B 8/0833

Special rules of classification

This class covers the use of radiation diagnostic devices to determine the position of a surgical instrument during an operation, e.g. using a C-arm (A61B 6/4441) for performing fluoroscopy (A61B 6/487). However, it does not cover path calculations and guiding of said instruments (A61B 34/20).

Applications or adaptations for dentistry
Definition statement

This place covers:

Radiation diagnosis devices specially adapted for dental examination, e.g. devices for panoramic imaging of the teeth.

References
Limiting references

This place does not cover:

Radiation diagnosis of bone

A61B 6/505

Dentistry per se

A61C 1/00- A61C 19/00

media206.png

[sirona.com]

media207.png

[fortmyerssmiles.com]

Informative references

Attention is drawn to the following places, which may be of interest for search:

Analysis of teeth using light

A61B 5/0088

Tomosynthesis

A61B 6/025

Computed tomography

A61B 6/032

Multiple detectors

A61B 6/4266

Special rules of classification

Due to their rotation capabalities needed to acquire panoramic images of the teeth, devices for panoramic radiography are often adapted to acquire projection data and generate computed tomographic images or tomosynthesis. In that case, they should be also classified under A61B 6/032 or A61B 6/025, respectively. If the device combines panoramic radiography and other imaging techniques, it might have different detectors for each imaging technique and it should be classified under A61B 6/42.

{by intraoral means (X-ray tubes having a small cross-section to facilitate introduction into small cavities H01J 35/32)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

X-ray tubes having a small cross-section to facilitate introduction into small cavities

H01J 35/32

{with arrangements for generating radiation specially adapted for radiation diagnosis (X-ray tubes or details thereof H01J 35/00)}
Definition statement

This place covers:

Radiation diagnostic devices comprising a radiation source for generating radiation and arrangements for manipulating said radiation by shaping the radiation beam, displacing it or modifying its characteristics.

Radiation sources cover both radiation source units to generate a radiation beam outside the patient oriented towards the patient (e.g. X-ray tubes) and radioactive tracers emitting radiation from inside the body due to radioactive decay (A61B 6/4057).

media208.png

[http://www.impactscan.org/images/straton.jpg]

media209.png

[biodex.com]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Arrangements for focusing or moderating radiation

G21K 1/00

Irradiation devices

G21K 5/00

Details of X-ray tubes

H01J 35/00

Circuits for X-ray tubes

H05G 1/00

Special rules of classification

Typically involves the generation of a radiation beam having a particular spatial configuration (A61B 6/4007, A61B 6/4035, A61B 6/4064), movement (A61B 6/4021, A61B 6/4057), intensity (A61B 6/405) or spectrum (A61B 6/4035).

Documents should be classified in these subgroups only if:

  • they explicitly relate to radiation diagnosis devices AND
  • they comprise constructional details of the source unit(s).

Devices for modifying the spatial confinement of the beam (collimators) should be classified under A61B 6/06.

{characterised by using a plurality of source units (circuit arrangements driving apparatuses comprising more than one X ray tube H05G 1/70)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Circuit arrangements driving apparatuses comprising more than one X-ray tube

H05G 1/70

{arranged in multiple source-detector units}
Definition statement

This place covers:

Radiation diagnosis devices comprising a plurality of source unit and a plurality of detector units, each source unit being functionally associated with a detector unit.

media210.png

[DE102008049049]

References
Limiting references

This place does not cover:

Devices for radiation diagnosis using a plurality of detector units

A61B 6/4266

Informative references

Attention is drawn to the following places, which may be of interest for search:

Multiple energy imaging

A61B 6/482

Circuit arrangements driving apparatuses comprising more than one X-ray tube

H05G 1/70

Special rules of classification

Devices where each source unit emits a ray with a different energy should be also classified under A61B 6/482.

Although these devices also have a plurality of DETECTORS THEY SHOULD NOT BE CLASSIFIED UNDER A61B 6/4266 since it is implicit that if the sources are arranged in source-detector units, the devices also have a plurality of detectors (i.e. A61B 6/4014 takes precedence).

{involving movement of the focal spot}
Definition statement

This place covers:

Modification of focal spot position on the anode or between multiple anodes both in static imaging or in imaging modalities where source unit and detector unit perform data acquisition while following a certain trajectory (swing focus, spring focus, alternating focus, flying focus).

media211.png

media212.png

[Kachelriess et al., "Flying Focal Spot (FFS) in Cone-Beam CT", IEEE Transactions onNuclear Science, VOL. 53, NO. 3, JUNE 2006]

References
Limiting references

This place does not cover:

Radiation diagnosis devices characterised by the use of a certain trajectory

A61B 6/027

Informative references

Attention is drawn to the following places, which may be of interest for search:

Multiple energy imaging

A61B 6/482

Tubes wherein the point of impact of the cathode ray on the anode or anti-cathode is movable relative to the surface thereof

H01J 35/24

{resulting in acquisition of views from substantially different positions, e.g. EBCT}
Definition statement

This place covers:

Devices where the displacement of the radiation beam during the data acquisition process (scan) to obtain images or projection data from different angles is carried out by translation of the focal spot, as is typically done in electron beam computed tomography (EBCT).

media213.png

[DE102007036038]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Tubes wherein the point of impact of the cathode ray on the anode or anti-cathode is movable relative to the surface thereof

H01J 35/24

{the source being combined with a filter or grating (filters for radiation per se G21K 1/10)}
Definition statement

This place covers:

Radiation diagnosis devices wherein the source unit is combined with a filtering means adapted to modify the spatial distribution of the intensity or the spectral characteristics of the radiation beam, e.g. bowtie filters.

Filters to modify a property of the beam but not its spatial confinement, e.g. the spectrum, or the intensity distribution, e.g. bowtie filters.

media214.png

[WO2007120744]

This class also includes gratings to cause diffraction and are used mainly for phase measurements, and grids, i.e. arrangements of blades situated along the detector pixels and used to block scattered radiation, when they are situated between source unit and patient.

References
Limiting references

This place does not cover:

Diaphragms/collimators for radiation diagnosis devices

A61B 6/06

Detector combined with grid or grating

A61B 6/4291

X-ray filters per se

G21K 1/10

Informative references

Attention is drawn to the following places, which may be of interest for search:

Multiple energy imaging

A61B 6/482

X-ray phase contrast imaging

A61B 6/484

Special rules of classification

Rules for classifying other devices situated on the beam path, used to modify properties of the beam:

  • collimators to modify the spatial confinement of the radiation beam should be classified under A61B 6/06,
  • gratings or grids situated between the patient and the detector should be classified under A61B 6/4291.

Radiation devices using filters to modify the spectral characteristics of the beam (i.e. modify the energy of the radiation beam) should be also classified under A61B 6/482.

Grids for X-ray phase contrast imaging (A61B 6/484) should also be classified here, if they are positioned between the source and the patient.

{Source units adapted to modify characteristics of the beam during the data acquisition process (A61B 6/4021, A61B 6/4035 take precedence; arrangements changing the time structure of an already generated radiation beam G21K 1/043)}
Definition statement

This place covers:

Radiation diagnosis devices involving arrangements to modify characteristics such as voltage or tube current during the data acquisition process.

media215.png

[US2012230466]

References
Limiting references

This place does not cover:

Movement of the focal spot

A61B 6/4021

Source unit combined with a filter

A61B 6/4035

Informative references

Attention is drawn to the following places, which may be of interest for search:

Multiple energy imaging

A61B 6/482

Control of exposure

A61B 6/542

Arrangements changing the time structure of an already generated radiation beam

G21K 1/043

Controlling X-ray tubes

H05G 1/30

Special rules of classification

Modifying the characteristics of the beam by moving the focal spot or using filter should be classified under A61B 6/4021 and A61B 6/4035, respectively.

Typically changing the voltage during image acquisition is used to modify the energy spectrum of the beam, which is related to multiple energy imaging (A61B 6/4021).

Modifying the tube current during data acquisition is typically used to control exposure to radiation (dose), hence A61B 6/542 might be relevant too.

{by using a source unit in the interior of the body (A61B 6/037 takes precedence; X-ray tubes with small cross-section H01J 35/32)}
Definition statement

This place covers:

Radiation diagnostic devices where the radiation source is introduced into the body, as part of a probe or capsule, or as a radioactive tracer.

media216.png

[WO 2005/058129]

References
Limiting references

This place does not cover:

Capsule endoscopes

A61B 1/041

Informative references

Attention is drawn to the following places, which may be of interest for search:

Diagnosis using light using a probe introduced into the body

A61B 5/0084

Emission tomography (PET/SPECT)

A61B 6/037

Radiation diagnosis with detectors for detecting non X-ray radiation

A61B 6/4258

Ultrasound diagnosis in body cavities

A61B 8/12

Detection of radiation

G01T 1/00

X-ray tubes with small cross-section

H01J 35/32

Special rules of classification

A document disclosing an diagnostic application of PET or SPECT scanner (A61B 6/037) does not need to be classified also under A61B 6/4057 to cover the radioactive tracer aspect since this is implicit in the A61B 6/037 code. Only in the case that the document discloses particular technical properties of said tracer that solve a technical problem (e.g. specific tracer injection protocol, combination of tracers, tracer carried to a specific organ by a capsule before release) should the document be classified here.

Applications of intra-operative gamma cameras to detect rests of tumours labelled with a radioactive tracer should get the codes A61B 6/4057 and A61B 6/4258.

{adapted for producing a particular type of beam}
Definition statement

This place covers:

Particular technical features of the radiation beam, e.g. geometrical properties or type of radiation.

media217.png

media218.png

[EP2036498]

Special rules of classification

This class also covers the use for radiation diagnosis of a source generating any radiation which is not X-ray or synchrotron (A61B 6/4092) radiation, e.g. a radioisotope source.

{with arrangements for detecting radiation specially adapted for radiation diagnosis (details of radiation detection G01T 1/00)}
Definition statement

This place covers:

Radiation diagnosis devices comprising a detection unit arrangement specially adapted for a particular acquisition technique or diagnostic application, and arrangements for modifying the beam prior to detection, e.g. anti-scatter grids.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring radiation per se

G01T 1/00

X-ray films

G03B 42/00

Packages for X-ray films

G03C 3/003

Image intensifiers

G03C 3/003

Special rules of classification

Documents should be classified in these subgroups only if:

  • they explicitly relate to radiation diagnosis devices AND
  • they comprise constructional details of the detector unit(s).

A document describing particular details of a radiation detector should be classified in the corresponding subclass of G01T 1/00, even if a clinical application of said detector is mentioned. However, if e.g. details of the arrangement of said detector in a PET scanner for said particular clinical application are disclosed, then it should also be classified in A61B 6/037 and in the corresponding subclass of A61B 6/50.

{characterised by using a particular type of detector}
Definition statement

This place covers:

Radiation devices comprising a detector with special features not covered by any of the subgroups below.

{using storage phosphor screens (details of stimulable phosphor sheets G01T 1/2012)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of stimulable phosphor sheets

G01T 1/2012

{using image intensifiers}
Definition statement

This place covers:

Radiation devices using an image intensifier for radiation detection.

media219.png

[WO2005006257]

References
Limiting references

This place does not cover:

Image intensifiers per se

H04N 5/32

Informative references

Attention is drawn to the following places, which may be of interest for search:

Matrix detectors

A61B 6/4233

Fluoroscopy

A61B 6/487

Special rules of classification

Image intensifiers in radiation diagnostics are typically used for real-time intra-operative imaging using fluoroscopy (A61B 6/487). Currently (2012) they have been substituted by flat panel detectors which should be classified under A61B 6/4233.

{using matrix detectors (for semiconductor radiation detectors G01T 1/24, G01T 1/2928)}
Definition statement

This place covers:

Radiation devices using an array of pixel detectors which generates an output in digital format. The array might have different geometries, 1 dimensional like in a CT scanner with a line detector, 2 dimensional and flat like a flat panel detector for radiography, 2 dimensional and cylindrical like in some multi-slice CT scanners, etc.

media220.png

[WO2005037075]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Semiconductor radiation detectors

G01T 1/24, G01T 1/2928

{using energy resolving detectors, e.g. photon counting (detectors for nuclear medicine G01T 1/16, G01T 1/29)}
Definition statement

This place covers:

Radiation devices using detectors capable of discerning several levels of energy of the detected beam.

References
Limiting references

This place does not cover:

Multiple energy imaging as an imaging technique

A61B 6/482

Detectors for nuclear medicine

G01T 1/16, G01T 1/29

Informative references

Attention is drawn to the following places, which may be of interest for search:

Contrast agents in radiation diagnosis

A61B 6/481

Radiation angiography

A61B 6/504

Radiation diagnosis of bone

A61B 6/505

Special rules of classification

Typically combined with the combination of radiation data acquired at different energies to extract a particular diagnostic information (A61B 6/482).

Multiple energy in radiation diagnostics is typically used to produce enhanced angiographic images (A61B 6/504) combined with a contrast agent (A61B 6/481) or for the diagnosis of bone (A61B 6/505).

{using detectors specifically adapted to be used in the interior of the body (detector details for in vivo counting G01T 1/161)}
Definition statement

This place covers:

Radiation diagnostic devices where the radiation detector is introduced into the body, as part of a probe or capsule.

media221.png

[WO2005058129]

References
Limiting references

This place does not cover:

Capsule endoscopes

A61B 1/041

Diagnosis using light using a probe introduced into the body

A61B 5/0084

Informative references

Attention is drawn to the following places, which may be of interest for search:

Radiation diagnosis with detectors for detecting non X-ray radiation

A61B 6/4258

Ultrasound diagnosis in body cavities

A61B 8/12

Detector details for in vivo counting

G01T 1/161

{for detecting non x-ray radiation, e.g. gamma radiation (A61B 6/037 takes precedence)}
Definition statement

This place covers:

Radiation diagnostic devices comprising a detector to detect radiation other than X-ray radiation, e.g. gamma or beta radiation.

References
Limiting references

This place does not cover:

Detecting radiation

G01T 1/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Emission tomography

A61B 6/037

Radiation source for the interior of the body

A61B 6/4057

Special rules of classification

Applications of PET or SPECT (A61B 6/037) do not require this class, since these techniques already imply the detection of non X-ray radiation. If the radiation is emitted by a radioactive tracer or in general a source inside the body (e.g. in a capsule) the class A61B 6/4057 should be given.

{characterised by using a plurality of detector units (A61B 6/4014 takes precedence)}
Definition statement

This place covers:

media222.png

[US2011064193]

References
Limiting references

This place does not cover:

Devices for radiation diagnosis using a plurality of source - detector units

A61B 6/4014

Special rules of classification

An array of pixels is considered to be a single detector unit. If the device has more than one array, they are considered to be a single detector unit if there is no independent control of each of the arrays. Otherwise, if each array is controlled independently, each array is considered to be a single detector unit. Devices with multiple source-detector units should only be classified under A61B 6/4007.

{using a detector unit almost surrounding the patient, e.g. more than 180°}
Definition statement

This place covers:

Radiation diagnosis devices comprising a detector unit forming a closed or almost closed structure around the patient, e.g. 4th generation CT scanners.

media223.png

[US2004081277]

{characterised by a detector unit being housed in a cassette}
Definition statement

This place covers:

Both matrix and film detectors.

media224.png

[US2012097860]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Film cassette holder construction

G03B 42/02

{the detector being combined with a grid or grating}
Definition statement

This place covers:

Radiation diagnosis devices comprising a detector unit combined with a grid, such as an anti-scatter grid or with a grating, as used in X-ray phase contrast imaging (A61B 6/484).

media225.png

[US2011274252]

References
Limiting references

This place does not cover:

Collimators for radiation diagnosis devices

A61B 6/06

Source combined with a filter or grating

A61B 6/4035

Reduction of scatter by image processing in devices for radiation diagnosis

A61B 6/5282

Informative references

Attention is drawn to the following places, which may be of interest for search:

X-ray phase contrast imaging

A61B 8/486

X-ray filters per se

G21K 1/10

Special rules of classification

Rules for classifying other devices situated on the beam path, used to modify properties of the beam:

  • collimators to modify the spatial confinement of the radiation beam should be classified under A61B 6/06,
  • filters or gratings situated between the source and the patient should be classified under A61B 6/4035.
{Constructional features of the device for radiation diagnosis}
Definition statement

This place covers:

Diagnostic devices comprising structural or mechanical arrangements allowing a specific usage or property, e.g. movement, modularity.

Special rules of classification

This class covers all details concerning constructional aspects not covered by any of the subgroups below.

{the device being mobile or portable, e.g. mounted on a trolley or handheld}
Definition statement

This place covers:

Mobile radiation diagnosis device, e.g. mounted on casters or rollers or small handheld devices, e.g. handheld intra-operative gamma cameras.

media226.png

[US20100296632]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

With anti-collision devices or braking systems

A61B 6/102- A61B 6/105

Ultrasound diagnostic devices mounted on a trolley

A61B 6/4405

{the device being modular}
Definition statement

This place covers:

Modular construction of radiation diagnosis device allowing part to be exchanged or replaced either for mounting different types of components or for simpler disassembling and reassembling.

media227.png

[EP2382922]

{related to combined acquisition of different diagnostic modalities}
Definition statement

This place covers:

Constructional arrangements for facilitating the combined use of different imaging modalities including translation from one device to the other or integration of different modalities in one device. At least one modality relates to X-ray imaging.

media228.png

[US2011297834]

References
Limiting references

This place does not cover:

Post-acquisition processing for combination of images from different modalities

A61B 6/5229 and lower

Informative references

Attention is drawn to the following places, which may be of interest for search:

Optical diagnosis

A61B 5/0059

Magnetic resonance imaging

A61B 5/055, G01R 33/48

Transmission tomography

A61B 6/032

Emission tomography

A61B 6/037

C-arms

A61B 6/4441

Diagnosis with ultrasound

A61B 8/00

Special rules of classification

This class covers all details concerning constructional aspects to combine different diagnostic modalities in one device.

(Ionising) radiation - (ionising) radiation: e.g. PET/CT

(Ionising) radiation - other type of diagnostics: e.g. CT/ultrasound (A61B 8/00), X-ray/optical (A61B 5/0059), CT/MRI (A61B 5/055, G01R 33/48), etc.

This class does not cover the combination of images coming from the different modalities per se, said combination should be classified under A61B 6/5229 and its subclasses.

{related to hygiene or sterilisation}
Definition statement

This place covers:

media229.png

[WO2004081867]

{related to the mounting of source units and detector units (A61B 6/02 takes precedence)}
Definition statement

This place covers:

Details of the mounting arrangement of the source units and/or detector units.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis

A61B 6/02

Special rules of classification

Imaging devices under A61B 6/02 should only be classified here if the document describes particular details of the arrangement. E.g. a computed tomography scanner should be classified under A61B 6/032 but not under A61B 6/4435, since it is implicit in such a device that source and detector unit are coupled by a rigid structure. However, a radiation device where source and detector unit are coupled by a rigid structure and which is capable of performing tomographic imaging should be classified both under A61B 6/4435 and A61B 6/032 (in such a case A61B 6/032 code the functional aspect "computerised tomography" and not the constructional aspect "computerised tomograph").

{the source unit and the detector unit being coupled by a rigid structure}
Definition statement

This place covers:

Devices wherein the relative position and orientation of the source and detector units is fixed. Open structures such as C-frames and closed structures such as gantries.

Special rules of classification

Devices where the distance between source and detector or the orientation can be modified should be classified under A61B 6/4452.

{the rigid structure being a C-arm or U-arm}
Definition statement

This place covers:

Devices wherein the source and the detector are fixed on a c or u-shaped frame.

media230.png

[WO2010128417]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Data acquisition trajectories in radiation diagnosis devices

A61B 6/027

Transmission tomography

A61B 6/032

Fluoroscopy

A61B 6/487

Special rules of classification

C-arms are usually used for fluoroscopy (A61B 6/487) or for computerised tomography (A61B 6/032). Due to their flexibility they can acquire projection data (views) along different trajectories for tomographic reconstruction (A61B 6/027).

{Tiltable gantries}
Definition statement

This place covers:

Devices wherein the source and the detector are fixed to a rigid frame forming a closed loop which can be tilted to image planes tilted with respect to the axial direction of the patient.

media231.png

[US2003235266]

{the source unit and the detector unit being able to move relative to each other}
Definition statement

This place covers:

Devices wherein the relative position and orientation of the source and detector units can be changed, e.g. device for performing tomosynthesis (A61B 6/025) of the breast where source and detector units are shifted along a linear trajectory but the source always points to the detector unit.

media191.png

[Dobbins and Godfrey, "Digital x-ray tomosynthesis: current state of the art and clinicalpotential", Phys. Med. Biol. 48 (2003) R65–R106]

{the source unit or the detector unit being attached to robotic arms}
Definition statement

This place covers:

media233.png

[US 2005/0234327]

{the source unit or the detector unit being mounted to ceiling}
Definition statement

This place covers:

media234.png

[US 2011/0182408]

{the source unit or the detector unit being mounted to counterpoise or springs}
Definition statement

This place covers:

Mechanical arrangements of the source and detector where their displacement is controlled by a counter balance or a spring.

media235.png

[US20090040333]

{related to servo controlled movement of the source unit}
Definition statement

This place covers:

Radiation devices where the movement of the source unit is controlled via a servomechanism, i.e. a feedback control to correct deviations in position (usually an electric or electronic motor).

{Means for cooling (A61B 6/045 takes precedence)}
Definition statement

This place covers:

Means for cooling in general, e.g. cooling of anode in the radiation source, cooling of the detector, etc.

References
Limiting references

This place does not cover:

Tables or beds provide with heating or cooling means

A61B 6/045

Special rules of classification

This class covers all aspects related to cooling in a radiation diagnostic device except for tables or beds with heating or cooling means (A61B 6/045).

{Means for identifying the diagnostic device}
Definition statement

This place covers:

Any means for identifying X-ray apparatus or component parts thereof, e.g. removable filters, detectors. Includes bar codes, memory chips or RFIDs.

{with special arrangements for interfacing with the operator or the patient}
Definition statement

This place covers:

Radiation diagnosis devices comprising input and/or output means structurally or functionally designed for allowing a specific interaction with the device user or the patient.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

ICT specially adapted for the operation of medical equipment or devices

G16H 40/60

Special rules of classification

Documents should be classified in these subgroups only if:

  • they explicitly relate to radiation diagnosis devices AND
  • they comprise details of the user interface.
{Displaying means of special interest}
Definition statement

This place covers:

Displays with special properties not covered by any of the subclasses.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Displays for electrocardiography

A61B 5/044

Displays in magnetic or electric diagnosis

A61B 5/742

Displays for ultrasound diagnosis

A61B 8/461

Special rules of classification

Touch screens should be classified here and as special input means (A61B 6/467).

{characterised by constructional features of the display}
Definition statement

This place covers:

Portable displays, supports for displays.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Viewing apparatus for X-ray images

G02B 27/023

{characterised by displaying multiple images or images and diagnostic data on one display}
Definition statement

This place covers:

Display of images obtained by all types of X-ray imaging apparatus, combinations of images, e.g. side-by-side, superimposed, tiled. Also for combination of images and other data, e.g. graphs, ECG curves, pulse waveforms, alphanumeric data.

media236.png

[EP1421913]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Radiation diagnosis devices comprising processing means for combining image data of a patient

A61B 6/5229

{involving a plurality of displays}
Definition statement

This place covers:

media237.png

[EP2391292]

{adapted to display user selection data, e.g. icons or menus}
Definition statement

This place covers:

media238.png

[US2007064864]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

ICT specially adapted for the operation of medical equipment or devices

G16H 40/60

{adapted to display 3D data (3D image rendering G06T 15/00; manipulating 3D models for computer graphics G06T 19/00)}
References
Limiting references

This place does not cover:

3D image rendering per se

G06T 15/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

manipulating 3D models for computer graphics

G06T 19/00

{characterised by special input means}
Definition statement

This place covers:

Both constructional (e.g. touch-screen, trackball) and functional aspects (e.g. specific purpose) of input means.

media239.png

[WO2011066486]

media240.png

[US2012093298]

{allowing annotation or message recording}
Definition statement

This place covers:

All types of message recording associated with radiation diagnosis imaging, e.g. annotation on image, sound recording.

{for selecting a region of interest [ROI]}
Definition statement

This place covers:

Operator selection of region of interest or specific organs to be imaged, e.g. by touch screen, keyboard or switch. Also for definition of ROI after image analysis.

Special rules of classification

This class does not cover automatic selection of a region of interest using image processing which should be classified under A61B 6/5211.

{Diagnostic techniques (A61B 6/022, A61B 6/032, A61B 6/037 take precedence)}
Definition statement

This place covers:

Diagnostic devices involving a specific use of ionising radiation to perform a particular type of diagnosis. Imaging techniques are independent of the device used for implementing them.

References
Limiting references

This place does not cover:

Stereoscopic imaging

A61B 6/022

Tomosynthesis

A61B 6/025

Transmission computed tomography

A61B 6/032

Emission tomography

A61B 6/037

Special rules of classification

Imaging techniques not found under A61B 6/02 and not covered by any of the subclasses should be classified as A61B 6/48.

{involving the use of contrast agents}
Definition statement

This place covers:

Radiation diagnosis imaging based on or improved using an agent with particular properties for the absorption of radiation..

media241.png

[wikipedia]

References
Limiting references

This place does not cover:

Diagnosis of haemodynamic parameter

A61B 6/032

Radiation diagnosis with radioactive tracer

A61B 6/4057

Diagnosis of blood vessels

A61B 6/504

Informative references

Attention is drawn to the following places, which may be of interest for search:

Acquisition of a temporal series of data

A61B 6/486

Contrast agents in ultrasound diagnosis

A61B 8/481

Contrast agents in magnetic resonance imaging

G01R 33/5601

Special rules of classification

Mainly related to angiography (see also diagnosis of blood vessels A61B 6/504), but not exclusively.

The diagnostic of hemodynamic parameters (e.g. perfusion) by acquiring a temporal series of images should be classified under A61B 6/507 and A61B 6/486.

Radioactive tracers are not considered to be a contrast agent but a source to be introduced into the body (A61B 6/4057).

{involving multiple energy imaging}
Definition statement

This place covers:

Radiation diagnostics using different radiation energy levels.

References
Limiting references

This place does not cover:

Source unit with multiple anodes

A61B 6/4021

Source unit combined with a filter

A61B 6/4035

Energy resolving detectors for radiation diagnosis

A61B 6/4241

Informative references

Attention is drawn to the following places, which may be of interest for search:

Filters for multiple energy imaging

A61B 6/4042

Angiography

A61B 6/504

Diagnosis or bone

A61B 6/505

Measuring spectral distribution of X-rays

G01T 1/36

Special rules of classification

Radiation diagnostic devices based on multiple energy imaging should be classified under A61B 6/482 and additionally according to the technique used to acquire the data at different energy levels, for example:

  • A source with several anodes for producing beams with different energy (A61B 6/4021).
  • One beam with a certain energy spectrum which is filtered after leaving the source unit (A61B 6/4035).
  • One beam with a certain energy spectrum which is separated into several energy bands at the detector (A61B 6/4241).
  • A dual source-detector scanner with source units emitting radiation beams of different energies (A61B 6/4014 and A61B 6/4266).

Multiple energy imaging is typically used for examining bone (A61B 6/505) or with contrast agents (A61B 6/481), where two energy bands, one above and one under the K-edge of the contrast material are used to enhance the effect of the contrast agent in angiography (A61B 6/504).

media242.png

[http://dx.doi.org/10.1016/j.acra.2008.09.004]

{involving scattered radiation}
Definition statement

This place covers:

Radiation diagnostics using information from scattered radiation (non-ballistic photons).

Special rules of classification

This class does not cover reduction of artefacts caused by scatter from images (A61B 6/5282) or scatter correction performed in projection data before image reconstruction (A61B 6/5205).

media243.png

[US2012157829]

media244.png

[http://dx.doi.org/10.1364/OE.18.012960]

{involving phase contrast X-ray imaging}
Definition statement

This place covers:

media245.png

[http://dx.doi.org/10.1038/nphys265]

{involving fluorescence X-ray imaging}
Definition statement

This place covers:

Radiation diagnostics using characteristic "secondary" (or fluorescent) X-rays from an object that has been excited by bombarding with high-energy X-rays or gamma rays.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Investigating material by X-ray fluorescence

G01N 23/223

{involving generating temporal series of image data}
Definition statement

This place covers:

Dynamic imaging techniques, e.g. wherein a plurality of images of the same region are acquired during a predetermined amount of time.

media246.png

[DE102010041443]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

ECG

A61B 5/0402

Transmission tomography

A61B 6/032

Contrast agents in radiation diagnosis

A61B 6/481

Diagnosis of heart

A61B 6/503

Haemodynamic parameters

A61B 6/507

Extracting a diagnostic parameter from image data

A61B 6/5217

Retrospective matching to a physiological signal

A61B 6/5288

Special rules of classification

Typically used for

{involving fluoroscopy}
Definition statement

This place covers:

Real-time X-ray imaging during an intervention.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Image intensifiers in radiation diagnosis

A61B 6/4225

Flat panel detectors in radiation diagnosis

A61B 6/4233

C-arms

A61B 6/4441

Special rules of classification

Initially fluoroscopy was carried out using a fluoroscope, i.e. using a fluorescent screen as a detector. Later image intensifiers (A61B 6/4225) were used, and nowadays (2012) typically flat panel detectors are used (A61B 6/4233).

Very often fluoroscopy is carried out using a C-arm (A61B 6/4441).

{involving pre-scan acquisition}
Definition statement

This place covers:

Diagnostic techniques in which a first acquisition is performed prior to the actual examination.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Exposure control based on patient thickness

A61B 6/544

Automatic setup of acquisition parameters

A61B 6/545

Calibration

A61B 6/582

Special rules of classification

Typically used to identify the boundaries of the zone to be scanned and automatically adjust acquisition parameters (A61B 6/545) or to adjust the X-ray dose according to the size of the patient (A61B 6/544). The pre-scan acquisition might be carried out using a different device than the radiation diagnostic device, e.g. an optical camera.

{Clinical applications (dentistry A61B 6/14 takes precedence)}
Definition statement

This place covers:

Classification in this group depends on the body part or organ which is to be diagnosed. This class covers clinical applications not provided for in the subgroups.

References
Limiting references

This place does not cover:

Applications or adaptations for dentistry

A61B 6/14

Informative references

Attention is drawn to the following places, which may be of interest for search:

Diagnosis by electrical, magnetic, pressure, sensing means, of particular parts of the body

A61B 5/40 - A61B 5/48

{involving diagnosis of head, e.g. neuroimaging, craniography}
Definition statement

This place covers:

media247.png

[radiologyinfo.org]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electroencephalography

A61B 5/0476

Ultrasonic brain imaging

A61B 8/0808

{involving diagnosis of breast, i.e. mammography}
Definition statement

This place covers:

media248.png

[wikipedia.org]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Mammography by transillumination

A61B 5/0091

Patient immobilizing means for mammography

A61B 6/0414

Ultrasonic mammography

A61B 8/0825

{involving diagnosis of heart}
Definition statement

This place covers:

media249.png

[medical.siemens.com]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrocardiography

A61B 5/0402

Ultrasonic heart imaging

A61B 8/0883

{involving diagnosis of blood vessels, e.g. by angiography}
Definition statement

This place covers:

media241.png

[wikipedia]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Locating blood vessels

A61B 5/489

Radiation imaging using contrast agents

A61B 6/481

Radiation diagnosis using multiple energy

A61B 6/482

Ultrasonic blood vessels imaging

A61B 8/0891

{involving diagnosis of bone}
Definition statement

This place covers:

media251.png

[radiologyinfo.org]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Bone monitoring in general

A61B 5/4504

Radiation diagnosis using multiple energy

A61B 6/482

Bone diagnosis using ultrasound

A61B 8/0875

Special rules of classification

This class covers bone analysis such as quantitative analysis of bone structure or imaging of bone, e.g. for the diagnostic of fractures.

{involving diagnosis of nerves}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Nerves diagnosis

A61B 5/04001, A61B 5/40

Locating nerves

A61B 5/4896

{involving determination of haemodynamic parameters, e.g. perfusion CT}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Detecting heart rate, blood pressure or blood blow

A61B 5/02

Radiation diagnosis imaging techniques involving the generation of a temporal sequence of image data

A61B 6/486

Extracting physiological parameters from image data

A61B 6/5217

{for non-human patients}
Definition statement

This place covers:

Animal imaging and pre-clinical research. Also for veterinary imaging.

{Devices using data or image processing specially adapted for radiation diagnosis (image processing per se G06T)}
Definition statement

This place covers:

Radiation diagnosis devices involving any kind of processing of data (raw data or diagnostic data) or image processing for enhancement purposes, e.g. artefacts reduction or resolution improvement.

This class covers data or image processing in radiation diagnostics not provided for in the subgroups.

References
Limiting references

This place does not cover:

Signal processing of physiological signals

A61B 5/72

Data/image processing in ultrasound diagnosis

A61B 8/52

Image processing per se

G06T

Image analysis per se

G06T 7/00

Image reconstruction from projection

G06T 11/003

Special rules of classification

Documents should be classified in these subgroups only if:

  • they explicitly relate to radiation diagnosis devices AND
  • they comprise details of data or image processing.

Image processing alone should not be classified in A61B 6/52, except when the processing is clearly adapted to a particular diagnostic device (e.g. removal of patient table from a CT image) or a specific diagnostic application (e.g. assessment of breast tumour size evolution from subsequent mammography acquisitions).

The subgroups are separated into processing of raw data (data output from the sensor requiring pre-processing to be used for diagnostic purposes) and diagnostic data (data readable or interpretable by medical personnel, obtained after pre-processing raw data).

media252.png

[http://scien.stanford.edu/pages/labsite/2008/psych221/projects/08/AdamWang/project_report_files/image008.jpg]

{involving processing of raw data to produce diagnostic data}
Definition statement

This place covers:

Pre-processing of data measured out of the detector, e.g. sinogram filtering or combination of detector rows, columns.

media253.png

[http://dx.doi.org/10.1364/OE.17.022320]

References
Limiting references

This place does not cover:

Detectors calibration

A61B 6/585

Processing of raw ultrasound data

A61B 8/5207

Image reconstruction from projection

G06T 11/003

{involving processing of medical diagnostic data}
Definition statement

This place covers:

Processing of data readable or interpretable by medical personnel, obtained after pre-processing raw data.

{extracting a diagnostic or physiological parameter from medical diagnostic data (details of algorithms to analyse biomedical images G06T 7/0012)}
Definition statement

This place covers:

Acquired data is used to derive a particular diagnostic index, e.g. tumour size or perfusion rate.

References
Limiting references

This place does not cover:

Diagnostic ultrasound image processing for generating planar views in a user selectable plane

A61B 8/523

Algorithms for biomedical image analysis

G06T 7/0012

Segmentation algorithms

G06T 7/10

ICT specially adapted for medical diagnosis, medical simulation or medical data mining

G16H 50/00

Special rules of classification

This class includes also extracting a region of an image representing a certain organ or body part by segmentation.

{generating planar views from image data, e.g. extracting a coronal view from a 3D image}
Definition statement

This place covers:

Generation of user selected planar views not coincident with CT slice images from CT data, e.g. sagittal or coronal slice images. Usually combined with 3D imaging.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Radiation diagnosis devices adapted to display 3D data

A61B 6/466

3D image rendering

G06T 15/00

Special rules of classification

This class also covers specific medical imaging processing such as:

  • generating a planar view from a 3D data set, e.g. DRR (digitally reconstructed radiographs),
  • generating a planar view from a temporal series of 2D data, e.g. MIP (maximum intensity projection).
{combining image data of a patient, e.g. combining a functional image with an anatomical image (details of algorithms for image registration G06T 7/30)}
Definition statement

This place covers:

Means for combining images of one or several imaging modalities, e.g. merging of contiguous sub-images to obtain a larger image or multi-modality image registration.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Constructional details concerning the combination of different modalities in a device

A61B 6/4417

Algorithms for image registration

G06T 3/0068

{combining images from the same or different radiation imaging techniques, e.g. PET and CT}
Definition statement

This place covers:

Combining images of the patient obtained by a diagnostic technique classified under A61B 6/00 (ionising radiation).

media254.png

[Finger et al., "Whole body PET/CT for initial staging of choroidal melanoma", Br JOphthalmol 2005;89:1270-1274, doi:10.1136/bjo.2005.069823]

{combining overlapping radiation images, e.g. by stitching}
Definition statement

This place covers:

media255.png

media256.png

[US2004081271]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Angiography in radiation diagnosis

A61B 6/504

Spatial compounding in ultrasound diagnosis

A61B 8/5253

Special rules of classification

Typically used in angiography A61B 6/504.

{combining images from different diagnostic modalities, e.g. X-ray and ultrasound}
Definition statement

This place covers:

Combining images of the patient obtained by a A61B 6/00 diagnostic technique (ionising radiation) and a non A61B 6/00 diagnostic technique.

media257.png

[Wein et al., " Automatic CT-ultrasound registration for diagnostic imaging and image-guided intervention", Medical Image Analysis, Volume 12, Issue 5, October 2008, Pages 577-585, http://dx.doi.org/10.1016/j.media.2008.06.006]

{removing objects from field of view, e.g. removing patient table from a CT image}
Definition statement

This place covers:

Objects such as patient table, headrest, markers are eliminated from the diagnostic data. Does not apply to artefacts i.e. unpredictable features determined by heat, dust, light.

media258.png

[US2011200169]

{involving detection or reduction of artifacts or noise (details of algorithms for image enhancement G06T 7/97)}
Definition statement

This place covers:

Data or image processing for noise or artefact reduction in radiation diagnostic images.

References
Limiting references

This place does not cover:

Algorithms for image de-noising

G06T 5/002

{due to motion}
Definition statement

This place covers:

Data or image processing for artefact reduction wherein the artefacts are caused by motion.

{using data from a motion artifact sensor (A61B 6/5276 takes precedence)}
Definition statement

This place covers:

A motion sensor is used to detect motion and information from said sensor is used in the processing to remove motion artefacts.

References
Limiting references

This place does not cover:

Motion derived by measuring table sag

A61B 6/5276

Retrospective matching to a physiological signal

A61B 6/5288

Acquisition triggered by a physiological signal

A61B 6/541

Informative references

Attention is drawn to the following places, which may be of interest for search:

Patient motion evaluation per se

A61B 5/11

Special rules of classification

This class does not cover triggering data acquisition based on a physiological signal (A61B 6/541) or retrospectively associating acquired data to a physiological signal which has been acquired simultaneously with the data (A61B 6/5288).

{involving measuring table sag}
Definition statement

This place covers:

Correction of misalignment errors caused by lack of rigidity of the patient table, where measurements of table sag are used.

media259.png

[US2007003020]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Patient positioning supports

A61B 6/04

{involving retrospective matching to a physiological signal}
Definition statement

This place covers:

Post-acquisition synchronization of image and physiological data (e.g. heart rate, breathing rate), the latter being either acquired in parallel with the image acquisition, or extracted from the acquired data.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Heart rate measurement per se

A61B 5/024

Electrocardiograms

A61B 5/0402

Evaluating respiratory organs

A61B 5/08

Monitoring thoracic expansion occurring during breathing

A61B 5/113

Diagnostic technique involving the generation of a temporal series of image data

A61B 6/486

Extraction of physiological parameters from medical diagnostic data

A61B 6/5217

Radiation diagnosis devices where acquisition is triggered by a physiological signal

A61B 6/541

Special rules of classification

The physiological signal is typically an electrocardiogram (ECG) A61B 5/0402 or a device to measure the cardiac cycle A61B 5/0803.

As an example, a radiation diagnostic device with synchronous acquisition of projection data with a C-arm (A61B 6/4441) and an ECG (A61B 5/0402) wherein the projection data is retrospectively associated to a certain cardiac phase (A61B 6/5288) to reconstruct a temporal series of images (A61B 6/486) of the heart (A61B 6/503) in different cardiac phases.

media260.png

[Prümmer et al. "Cardiac C-Arm CT: A Unified Framework for Motion Estimation and Dynamic CT", IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 28, NO. 11, NOVEMBER 2009, doi: 10.1109/TMI.2009.2025499]

{involving using additional data, e.g. patient information, image labeling, acquisition parameters}
Definition statement

This place covers:

Processing of data using non measured data, such as patient name or age, or image identification. Typically data can be found in the header of a digital image file (e.g. a DICOM header).

media261.png

[US2006257040]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

ICT specially adapted for the handling or processing of patient-related medical or healthcare data

G16H 10/00

{Control of devices for radiation diagnosis}
Definition statement

This place covers:

Aspects of radiation diagnostic devices concerning control of the device or parts of the device. All control aspects not covered by the subgroups should be classified in A61B 6/54.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

ICT specially adapted for the operation of medical equipment or devices

G16H 40/60

{involving acquisition triggered by a physiological signal}
Definition statement

This place covers:

Acquisition control wherein a signal of physiological origin (heart rate, breathing rate) is used to initiate data acquisition.

media262.png

[http://dx.doi.org/10.1148/radiol.09090860]

References
Limiting references

This place does not cover:

Retrospective matching to a physiological signal

A61B 6/5288

Informative references

Attention is drawn to the following places, which may be of interest for search:

Heart rate measurement per se

A61B 5/024

Monitoring thoracic expansion occurring during breathing

A61B 5/113

Circuit arrangements for obtaining X-ray photography at predetermined instants in the movement of an object, e.g. part of a human body

H05G 1/62

{involving control of exposure}
Definition statement

This place covers:

Control of exposure parameters, e.g. to optimize exposure of different body thicknesses, to reduce patient dose, to avoid oversaturation of detector.

media263.png

[US2006018425]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Source units adapted to modify characteristics of the beam during the data acquisition process

A61B 6/405

Automatic setup of acquisition parameters

A61B 6/545

Controlling X-ray tubes

H05G 1/30

Special rules of classification

In X-ray imaging, exposure is typically controlled by modifying characteristics of the source unit such as intensity or voltage (A61B 6/405). This class covers control of exposure during data acquisition. Automatic setup of the exposure parameters based on information about the patient or the diagnostic application should be classified under A61B 6/545.

{dependent on patient size}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Based on pre-scan

A61B 6/488

Special rules of classification

Exposure control dependent on patient size is often carried out by performing a pre-scan (A61B 6/488) to estimate the dimensions of the patient.

{involving automatic set-up of acquisition parameters}
Definition statement

This place covers:

Automatic setup of apparatus parameters using patient specific information, e.g. weight, height and/or diagnostic specific information, e.g. perfusion CT acquisition protocol.

media264.png

[US2010232573]

References
Limiting references

This place does not cover:

Control of exposure during data acquisition

A61B 6/542

Special rules of classification

This class does not cover dynamic control of acquisition parameters to minimise patient exposure to radiation A61B 6/542.

{involving tracking of position of the device or parts of the device (using an image of a phantom A61B 6/584)}
Definition statement

This place covers:

Means for tracking position of any part of the radiation diagnosis device (e.g. table, C-arm). Includes optical markers, ultrasound sensors, visual linear scales.

media265.png

[DE102010020782]

References
Limiting references

This place does not cover:

Locating a surgical device in the body with a radiation diagnosis device

A61B 6/12

Surgical navigation systems

A61B 34/20

Special rules of classification

This class does not cover tracking the position of a surgical device (A61B 6/12) or guiding a surgical device (A61B 34/20).

{Remote control of radiation diagnosis devices}
Definition statement

This place covers:

Remote control of any operational aspect (data acquisition, configuration, etc) of radiation diagnosis devices.

References
Limiting references

This place does not cover:

Transmission of radiation diagnosis data via a network

A61B 6/56

Transmission of radiation diagnosis images via a network

A61B 6/563

Special rules of classification

Remote control is often carried out through a data network and involves transmission of data A61B 6/56 or image data A61B 6/563.

media266.png

[US2011073769]

{Details of data transmission or power supply, e.g. use of slip rings}
Definition statement

This place covers:

Radiation diagnosis devices comprising :

  • means for transmitting / receiving data to / from an external device or between components of the device, e.g. image transmission to a remote physician workstation for diagnosis; or
  • means for supplying power to any component of the device, e.g. between stationary and moving parts.

media267.png

[US2011066022]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Flexible or turnable line connectors

H01R 35/00

Details of X-ray tube power supply arrangements

H05G 1/10

Special rules of classification

This class covers aspects of data transmission or aspects of power supply. Sometimes these are combined like in slip rings (H01R 39/08), where power and data are transmitted from a stationary to a rotating structure.

{involving image data transmission via a network}
Definition statement

This place covers:

Transmission of diagnostic image data via a network, e.g. transmission of image data from a radiation diagnosis device to a server for archiving.

media268.png

[US2012018641]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

ICT specially adapted for the handling or processing of medical images

G16H 30/00

Special rules of classification

This class cover transmission of images via a PACS (Picture Archiving and Communication System) or a HIS (Hospital Information System).

{involving communication between imaging systems}
Definition statement

This place covers:

Details of radiation diagnosis devices related to the transfer of data between two imaging systems.

media269.png

[US2011317809]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Constructional details related to combined acquisition of different diagnostic modalities

A61B 6/4417

{Testing, adjusting or calibrating devices for radiation diagnosis}
Definition statement

This place covers:

Means for assessing and adjusting the parameters of the device as a function of the system geometry.

{Remote testing of the device}
Definition statement

This place covers:

media270.png

[US2011121969]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Communication between imaging systems

A61B 6/566

ICT specially adapted for the remote operation of medical equipment or devices

G16H 40/67

Special rules of classification

Typically involves data transmission over a network (A61B 6/56). However, the class A61B 6/56 should only be given if said data transmission is not merely mentioned but technical details therefore are disclosed.

{Calibration}
Definition statement

This place covers:

Includes methods or devices for determining particular properties (geometrical or other type) of radiation diagnosis device.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Algorithms for calibration

G06T 7/80

{using calibration phantoms (models for medical purposes G09B 23/28)}
Definition statement

This place covers:

Methods or devices for calibration where a reference object (phantom) is used to determine particular properties of the radiation diagnosis device.

Special rules of classification

This class covers e.g. determining the distortion caused by the acquisition geometry of a C-arm (A61B 6/4441) or using a reference object to calculate quantitative values from an image.

{determining position of components of the device using images of the phantom}
Definition statement

This place covers:

Methods or devices where a reference object is used to determine the absolute or relative position of components of the device.

media271.png

[DE102008012857]

Special rules of classification

This class covers e.g. the determination of the position of the source unit and detector unit of a C-arm (A61B 6/4441) at every angular position during rotation to be used in the reconstruction algorithm (G06T 11/003) to generate CT images (A61B 6/032).

{Calibration of detector units}
Definition statement

This place covers:

All types of calibration, correction or compensation, e.g. compensation for non-linear response of X-ray detectors, electric noise, saturation, charge leakage offset, temperature, crosstalk, defective pixels.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Processing of raw data

A61B 6/5205

{Detection of faults or malfunction of the device}
Definition statement

This place covers:

Any means for determining or identifying a fault or failure in X-ray apparatus or component parts thereof.

media272.png

[US2011129067]

{Alignment of source unit to detector unit}
Definition statement

This place covers:

Any means for aligning the source and detector unit or any use of a radiation diagnostic device involving the alignment of source and detector units.

References
Limiting references

This place does not cover:

Radiation diagnostic devices comprising source and detector units movable relative to each other

A61B 6/4452

Calibration in radiation diagnostic devices

A61B 6/582

Calibration using phantoms to determine position of parts of a device

A61B 6/584

Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for directing the radiation beam to a particular spot

A61B 6/08

Special rules of classification

A calibration method for aligning the source and detector units should also be classified under A61B 6/582 or A61B 6/584 (if a phantom is used).

{Setting distance between source unit and detector unit}
Definition statement

This place covers:

Any means for setting the distance between source and detector unit or any use of a radiation diagnostic device involving the modifying said distance.

media273.png

[US2010215152]

{Setting distance between source unit and patient}
Definition statement

This place covers:

Any means for setting the distance between source and patient or any use of a radiation diagnostic device involving the modifying said distance, e.g. to modify the magnification of an X-ray image.

Instruments for auscultation
Definition statement

This place covers:

Any instrument allowing to detect a sound generated within the body :

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Methods or devices for transmitting, conducting or directing sound in general

G10K 11/00

Special rules of classification
{Detecting cranial noise, e.g. caused by aneurism}
Definition statement

This place covers:

Instruments comprising patient's head-mounted sensors which detect acoustic signals generated from pulsing blood flow through the patient's brain.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Detecting intracranial pressure

A61B 5/031

{Detecting lung or respiration noise}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Detecting, measuring or recording devices for evaluating the respiratory organs

A61B 5/08

Monitoring sleep apnoea

A61B 5/4818

Devices for preventing snoring

A61F 5/56

{Detecting noise caused by implants, e.g. cardiac valves}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Prostheses implantable into the body

A61F 7/02

{Detecting skeletal, cartilage or muscle noise (A61B 7/003 and A61B 7/008 take precedence)}
References
Limiting references

This place does not cover:

Detecting lung or respiration noise

A61B 7/003

Detecting noise of gastric tract

A61B 7/008

Informative references

Attention is drawn to the following places, which may be of interest for search:

Diagnosing the musculoskeletal system or teeth

A61B 5/45

{Detecting noise of gastric tract, e.g. caused by voiding}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Diagnosing the gastrointestinal system

A61B 5/42

Stethoscopes {(acoustic details thereof G10K 11/00)}
Definition statement

This place covers:

Any instrument allowing to listen to sound/noise emitted by the body.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Methods or devices for transmitting, conducting or directing sound in general

G10K 11/00

{for introduction into the body, e.g. into the oesophagus (oesophageal ECG probes A61B 5/0421)}
References
Limiting references

This place does not cover:

Oesophageal ECG probes

A61B 5/0421

Informative references

Attention is drawn to the following places, which may be of interest for search:

Endoscopes

A61B 1/00

Electric stethoscopes (microphones, acoustic transducers therefor H04R)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of microphones and acoustic transducers

H04R 1/46

{Detection of Korotkoff sounds (A61B 5/0225 takes precedence; measuring blood pressure A61B 5/021)}
References
Limiting references

This place does not cover:

Deriving pressure in blood vessels from Korotkoff sounds

A61B 5/0225

Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring blood pressure

A61B 5/021

Diagnosis using ultrasonic, sonic or infrasonic waves (imaging of objects using sonar G01S 15/00)
Definition statement

This place covers:

Diagnostic equipment and / or method which involves the use of ultrasonic, sonic or infrasonic waves.

A complete characterization of the equipment or method requires the identification of both constructional and operational aspects according to the following rules.

Relationships with other classification places

Several subclasses, groups and subgroups provide for the different components or functional aspects constituting the devices for diagnosis using ultrasonic, sonic or infrasonic waves. It should be emphasized that documents describing these components should be classified in A61B 8/00 only if they disclose a device for diagnosis using ultrasonic, sonic or infrasonic waves and the link between said components or functional aspects and the clinical application is not trivial.

media274.png

The preceding image includes references to A61B 5/00, A61B 8/00, A61B 6/00, G06T, G16H, G06K 9/00, G01S15/89D, G01S7/52S, G01N 29/00, B06B 1/00, G10K 11/00, H01L 41/00.

Techniques for short-range imaging with ultrasound per se (both devices and methods) are classified under G01S 15/8906 and G01S 7/52017. These techniques should only be classified under A61B 8/00 when the link between the use of a particular technique and a clinical application is not obvious. The fact that the device is a medical diagnostic device is not a sufficient criterion for classifying in A61B 8/00 and not in G01S. As an example, a document disclosing an ultrasonic device adapted to calculate cardiac output using Doppler would be classified under A61B 8/00. If on the other hand the document discloses the sequence of pulses and their processing to obtain the Doppler measurements, then it should be classified under G01S 15/8906 or G01S 7/52017, even if the document mentions that the device is a diagnostic device. However, if there is a link between the particular implementation of the Doppler measurements and the clinical application, it should be classified in both A61B 8/00 and G01S 15/8906. Similarly, a modular medical diagnostic device wherein the probe can be exchanged to choose among a set of probes according to several clinical applications would be classified under A61B 8/00. However, a modular medical diagnostic device with exchangeable circuit boards to provide for easier upgrade would be classified under G01S. Only if the choice of a particular board was related to a clinical application should it be classified under A61B 8/00.

The same principle applies to other neighbouring fields such as, e.g. image processing (G06T). A document disclosing an algorithm for image enhancement should be classified under the corresponding subclass of G06T, even if the document mentions that the images are x-ray images. However, if there is a link between details of the algorithm and a particular clinical application, then the document should also be classified in the corresponding subclass of A61B 8/00. On the other hand, if is only mentioned that an algorithm for image enhancement is used but the disclosure deals mainly with details of the radiation diagnostic device, then it should only be classified in A61B 8/00.

References
Limiting references

This place does not cover:

Diagnosis using photo-acoustic measurements

A61B 5/0095

Diagnosis using acousto-optic measurements

A61B 5/0097

Instruments for auscultation, e.g. stethoscopes

A61B 7/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Ultrasound therapy

A61N 7/00

Ultrasound transducers per se

B06B 1/00

Details of systems according to G01S 15/00

G01S 7/52

Systems using the reflexion or re-radiation of acoustic waves, e.g. acoustic imaging

G01S 15/00

Short-range imaging using acoustic waves

G01S 15/8906

Special rules of classification

Function-oriented aspects:

Construction-oriented aspects:

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Ultrasound transducer

sound generating and / or receiving element

Probe

combination of at least one ultrasound transducer and its housing

Raw data

data output from the sensor/detector/transducer requiring pre-processing to be used for diagnostic purposes

Diagnostic data

data readable or interpretable by medical personnel, obtained after pre-processing of raw data

Image data

medical diagnostic data in the form of two- or three-dimensional data sets

Synonyms and Keywords

In patent documents, the following abbreviations are often used:

US

ultrasound

Measuring pulse or heart rate
Definition statement

This place covers:

Apparatus for detecting, measuring or recording pulse rate or heart rate, e.g. given in beats per minute.

media275.png

[US2011152688]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring pulse or heart rate in general

A61B 5/024

Measuring pulse or heart rate for foetuses

A61B 5/02411

Ultrasonic heart imaging

A61B 8/0883

US blood vessel imaging

A61B 8/0891

Diagnosis using US Doppler signals

A61B 8/488

Pulse or heart rate derived from US image

A61B 8/5223

Special rules of classification

Typically done by analysis of Doppler signals (A61B 8/488) or derived from ultrasonic images (A61B 8/5223). For foetus heart rate, classify here and in A61B 8/0866.

Measuring blood pressure
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring blood pressure in general

A61B 5/021

Ultrasonic blood vessels imaging

A61B 8/0891

Blood pressure derived from US image

A61B 8/5223

Measuring blood flow (measuring volume flow in general G01F, e.g. G01F 1/66, G01F 1/72; measuring speed of fluids in general G01P 5/00)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring blood flow in general

A61B 5/026

Ultrasonic blood vessels imaging

A61B 8/0891

Ultrasonic Doppler imaging

A61B 8/488

Measuring volume flow

G01F 1/00- G01F 25/00

Measuring speed of fluids

G01P 5/00

Special rules of classification

Typically done by analysis of Doppler signals (A61B 8/488) or derived from ultrasonic images (A61B 8/5223).

{to determine blood output from the heart (in general A61B 5/029)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Determination of blood output from the heart in general

A61B 5/029

Heart imaging using ultrasound

A61B 8/0883

Detecting organic movements or changes, e.g. tumours, cysts, swellings (A61B 8/02 - A61B 8/06 take precedence)
Definition statement

This place covers:

Clinical application of the diagnosis device or method. Classification in the subgroups depends on the body part or organ which is to be diagnosed. Group A61B 8/08 covers clinical applications not otherwise provided.

References
Limiting references

This place does not cover:

Measuring heart rate

A61B 8/02

Measuring blood pressure

A61B 8/04

Measuring blood flow

A61B 8/06

Informative references

Attention is drawn to the following places, which may be of interest for search:

Diagnosis by electrical, magnetic, pressure, light,...sensing means, of particular parts of the body

A61B 5/40- A61B 5/48

Diagnosis by radiation devices of particular parts of the body

A61B 6/50

Extraction of a diagnostic parameter from ultrasound images

A61B 8/5223

{for diagnosis of the brain}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Head diagnosis using radiation

A61B 6/501

{using echo-encephalography}
Definition statement

This place covers:

Use of ultrasound to study the intracranial structures of the brain, wherein pulse of ultrasonic waves are beamed through the head and echoes reflected by midline structures are recorded and analysed.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Diagnosis using electro-encephalography

A61B 5/0476

Special rules of classification

A typical application is Trans-Cranial Doppler (TCD) imaging wherein a Doppler acquisition (A61B 8/488) allows evaluation of blood flow in a variety of intracranial arteries by applying ultrasound to areas or windows of the skull where the bone is relatively thin. The Doppler acquisition may be combined (A61B 8/5246) with a B-mode acquisition for locating the arteries (A61B 8/085).

{for diagnosis of the breast, e.g. mammography}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Mammography by transillumination

A61B 5/0091

X-ray mammography

A61B 6/502

Patient support for imaging suspended breast

A61B 8/406

Detection of breast cancer using biopsy

A61B 10/0041

Special rules of classification

May involve the use of specific positioning means (A61B 8/40), e.g. compression means (A61B 8/403) or means for positioning the patient in prone position (A61B 8/406). May also be used in combination with biopsy needles (A61B 10/0041), wherein the needle is attached to an ultrasound probe (A61B 8/4455) and / or tracked by the probe (A61B 8/0841).

{involving detecting or locating foreign bodies or organic structures}
Definition statement

This place covers:

Ultrasound diagnosis devices for localisation or tracking of organic structures (e.g. blood vessels) or foreign bodies, i.e. any kind of instrument or tissue which does not belong to the patient body by nature, e.g. tumour, implant, surgical instrument.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Other imaging methods for locating foreign bodies

A61B 5/06

Locating foreign bodies using radiation

A61B 6/12

Surgical navigation systems

A61B 34/20

Echogenic markers

A61B 90/39

{for locating instruments}
Definition statement

This place covers:

Instruments like biopsy needles, catheters.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Biopsy needles

A61B 10/0038- A61B 10/02

Surgical navigation systems

A61B 34/20

Special rules of classification

For example, a biopsy needle (A61B 10/0041) attached to an ultrasound probe (A61B 8/4455), wherein movement of the needle is tracked by the probe, would be classified here.

{for locating body or organic structures, e.g. tumours, calculi, blood vessels, nodules}
Definition statement

This place covers:

Detection of tumours, calculi, blood vessels, nodules for anatomical localization (e.g. detection of arteries as a support to Trans-cranial Doppler ultrasound) or diagnosis (evaluation of tumour size) purposes.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Locating particular structures in or on the body in general

A61B 5/4887

Processing for extracting a physiological parameter

A61B 8/5223

{involving foetal diagnosis; pre-natal or peri-natal diagnosis of the baby}
Definition statement

This place covers:

Pregnancy detection, foetal ultrasound monitoring in general (e.g. foetal imaging or foetal heart rate determination).

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Foetal pulse or heart rate determination in general

A61B 5/02411

Pregnancy and labour monitoring

A61B 5/4343

Foetal pulse or heart rate determination using (ultra/infra) sonic waves

A61B 8/02

{for diagnosis of bone (A61B 5/4504 takes precedence)}
Definition statement

This place covers:

Includes both quantitative analysis of bone material and visualization of bone structure.

References
Limiting references

This place does not cover:

Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes

A61B 5/103

Informative references

Attention is drawn to the following places, which may be of interest for search:

Bone monitoring in general

A61B 5/4504

Bone diagnosis using radiation

A61B 6/505

Measuring interfaces by ultrasound

A61B 8/0858

{for diagnosis of the heart}
Definition statement

This place covers:

Includes both functional (e.g. heart-related physiological parameters) and anatomical (e.g. visualization of heart structure) analysis of the heart.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrocardiography

A61B 5/0402

X-ray heart imaging

A61B 6/503

Retrospective matching to a physiological signal

A61B 8/5284

Acquisition triggered by a physiological signal

A61B 8/543

Special rules of classification

Documents relating to heart rate (A61B 8/02) and / or blood output monitoring (A61B 8/065) should be classified here only if they describe other features pertaining to heart diagnosis. The same applies to documents relating to blood vessels analysis (A61B 8/0891).

As the heart is a permanently moving organ, diagnostic devices or methods are often adapted to take into account the dynamic aspects. In particular, retrospective (A61B 8/5284) or prospective (A61B 8/543) synchronization to a physiological signal may be used to obtain motion-free images. M-mode (A61B 8/486) or Doppler signals (A61B 8/488) may be used to visualize motion.

{for diagnosis of blood vessels}
Definition statement

This place covers:

Mainly related to the structural diagnosis of blood vessels (since blood flow assessment is dealt with in A61B 6/06).

References
Limiting references

This place does not cover:

Measuring blood flow

A61B 8/06

Informative references

Attention is drawn to the following places, which may be of interest for search:

Locating blood vessels

A61B 5/489

Radiation imaging using contrast agents

A61B 6/481

X-ray blood vessels imaging

A61B 6/504

Use of ultrasound contrast agents, e.g. microbubbles

A61B 8/481

Special rules of classification

Documents relating to heart, brain or blood flow analysis should be classified here only if they describe other features pertaining to blood vessels diagnosis.

Blood vessels diagnosis is often performed using Doppler signals (A61B 8/488), due to the high accuracy of this technique to visualize blood moving inside the vessels.

A typical example of blood vessel diagnosis is compression ultrasonography, wherein venous compression (A61B 8/403) is applied and B-mode images are acquired to detect and locate (A61B 8/085) deep vein thrombosis.

Eye inspection
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Apparatus for testing the eyes in general

A61B 3/00

in body cavities or body tracts, e.g. by using catheters (catheters per se A61M 25/00)
Definition statement

This place covers:

media276.png

[US2010063401]

References
Limiting references

This place does not cover:

Details of catheter construction

A61B 8/445

Catheters per se

A61M 25/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Medical endoscopes

A61B 1/00

Wireless probes

A61B 8/4472

Special rules of classification

Details of catheter construction (e.g. use of balloons, pigtails or splines) can be found in A61B 8/445. Scanning mechanisms for moving the transducers are classified in A61B 8/4461.

Tomography (A61B 8/10, A61B 8/12 take precedence; tomography for radiation diagnosis A61B 6/02)
Definition statement

This place covers:

Acquisition of a plurality of slices or planes (e.g. B-modes or C-mode images) for reconstruction of 2D or 3D images.

References
Limiting references

This place does not cover:

For eye inspection

A61B 8/10

Using catheters

A61B 8/12

Acquisition of a 3D volume of data

A61B 8/483

Informative references

Attention is drawn to the following places, which may be of interest for search:

Tomography for radiation diagnosis

A61B 6/02

Echo-tomography
Definition statement

This place covers:

Tomography based on the measurement of waves reflected from the inspected structures, e.g. B-mode or C-mode images.

{characterised by scanning multiple planes}
Definition statement

This place covers:

Simultaneous acquisition of a plurality of planes.

media277.png

[US2009082674]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Using several separate transducers or probes

A61B 8/4477

Using a specific transducer arrangement

A61B 8/4494

Transmission-tomography
Definition statement

This place covers:

Tomography based on the measurement of attenuation of waves transmitted or diffracted through the inspected structures.

media278.png

[Jin and Wang, "Correction of the effects of acoustic heterogeneity on thermoacoustic tomography using transmission tomography", Proceedings of SPIE Vol.6086 (2006) 60860W-1 - 60860W-5, XP002447465]

{Positioning of patients, e.g. means for holding or immobilising parts of the patient's body}
Definition statement

This place covers:

Any means for supporting (e.g. tables, beds) or positioning (e.g. support position control, movement restraining devices) the patient, including immobilising part of the patient body.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Positioning of patients in radiation diagnosis devices

A61B 6/04

{using compression means}
Definition statement

This place covers:

media279.png

[WO2012036106]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Patient supports using compression means in radiation diagnosis devices

A61B 6/0414

Diagnosis of breasts

A61B 8/0825

Diagnosis of blood vessels

A61B 8/0891

{using means for diagnosing suspended breasts}
Definition statement

This place covers:

media280.png

[WO2012053518]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Patient supports for imaging suspended breasts using radiation

A61B 6/0435

Ultrasonic mammography

A61B 8/0825

{Details of probe positioning or probe attachment to the patient}
Definition statement

This place covers:

Any means for positioning and / or determining the position of the probe with respect to the patient.

References
Limiting references

This place does not cover:

Particular shape of the probe for better grip

A61B 8/4455

Details of transducer steering

A61B 8/4461

Informative references

Attention is drawn to the following places, which may be of interest for search:

Supports, positioning and alignment in fixed situation for ultrasound inspection of materials

G01N 29/223

Supports, positioning and alignment in moving situation for ultrasound inspection of materials

G01N 29/225

{by using holders, e.g. positioning frames}
Definition statement

This place covers:

Any means for positioning the probe on the patient

media281.png

[US2004087851]

{characterised by articulated arms}
Definition statement

This place covers:

Articulated arm (including sliding, pivoting) for holding the probe. May be provided with position encoders.

References
Limiting references

This place does not cover:

Catheter with a probe at the tip

A61B 8/12

{characterised by straps, belts, cuffs or braces}
Definition statement

This place covers:

Attachment of the probe with a strap, belt, cuff, brace. Probes mounted in a fitting attached to a strap.

{characterised by adhesive patches}
Definition statement

This place covers:

Adhesive patch for attaching the probe to the skin surface. May be combined with a swivelling/pivoting mount to allow change in probe position.

{involving determining the position of the probe, e.g. with respect to an external reference frame or to the patient}
Definition statement

This place covers:

Any means for determining the position of the probe with respect to the patient or to an external reference, e.g. imaging or therapy system. Typically involves the use of a position and/or movement sensing unit provided either on/in the probe (A61B 8/4254) or outside the probe (A61B 8/4263).

media282.png

[WO2012018851]

References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Determination of probe position or applied pressure used to compress the tissue in sonoelastography

A61B 8/485

Informative references

Attention is drawn to the following places, which may be of interest for search:

Radiation devices for locating probes

A61B 6/12

Locating instruments by ultrasound

A61B 8/0841

Determining the quality of coupling between the probe and the tissue

A61B 8/429

Surgical navigation systems

A61B 34/20

{using sensors mounted on the probe}
Definition statement

This place covers:

Any kind of sensor within or attached to the ultrasound probe, providing information on the current position of the probe (e.g. accelerometer, coils sensing external magnetic fields, GPS-type position sensor).

References
Limiting references

This place does not cover:

Position encoders part of an articulated arm

A61B 8/4218

Sensing the position of the probe from an external sensor

A61B 34/20

Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Intracavitary probe positioning

A61B 8/12

{using sensors not mounted on the probe, e.g. mounted on an external reference frame}
Definition statement

This place covers:

Any kind of probe position tracking means not attached to or part of the probe, e.g. tracking LED markers on the probe, tracking the probe position with a camera, probe emitting ultrasound signal for localisation purpose.

References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Intracavitary probe positioning

A61B 8/12

{involving the acoustic interface between the transducer and the tissue}
Definition statement

This place covers:

Any means for facilitating, regulating or monitoring the quality of coupling between the transducer and the tissue.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Methods and devices for transmitting, directing or conducting sound in general

G10K 11/00

{characterised by sound-transmitting media or devices for coupling the transducer to the tissue}
Definition statement

This place covers:

Any means used as interface between the transducer and the tissue, e.g. coupling pad, special conformable shape of the probe, fluid filled reservoir. The mere application of a layer of conducting gel between the probe and the skin does not require a classification in A61B 8/4281, unless specific details of this application are described, e.g. gel containment structure on surface of the probe or particular gel mixture having specific viscosity.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Probe holders

A61B 8/4209

{characterised by determining or monitoring the contact between the transducer and the tissue}
Definition statement

This place covers:

Any means for monitoring the quality of coupling between the transducer and the tissue. Also for the purpose of triggering/initiating image acquisition or for monitoring applied pressure in elastic imaging (A61B 8/485).

References
Limiting references

This place does not cover:

Measuring the position of the probe per se

A61B 8/4245

Informative references

Attention is drawn to the following places, which may be of interest for search:

Sonoelastography

A61B 8/485

{Constructional features of the ultrasonic, sonic or infrasonic diagnostic device}
Definition statement

This place covers:

Structural and mechanical features of the ultrasound device specially adapted for diagnostic use.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Constructional features of devices for short-range imaging with acoustic waves

G01S 7/52079

{Device being mounted on a trolley}
Definition statement

This place covers:

Apparatus mounted on casters or rollers, often resembling a cart / trolley and comprising a sonic probe. May include battery supply, telemetry means and display.

media283.png

[US2012/0108965]

{Device being modular}
Definition statement

This place covers:

Modular construction of the device allowing parts to be exchanged or replaced either for mounting different types of components of for simpler disassembling and reassembling.

media284.png

[EP1935343]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Modular devices for short-range imaging with acoustic waves

G01S 7/52082

{related to combined acquisition of different diagnostic modalities, e.g. combination of ultrasound and X-ray acquisitions}
Definition statement

This place covers:

Constructional arrangements for facilitating the combined use of different imaging modalities including translation from one device to the other or integration of different modalities in one device. At least one modality relates to ultrasound imaging.

media285.png

[US2011/0295115: Combination of gamma-ray detector (112) and ultrasound probe (103)]

References
Limiting references

This place does not cover:

Using several separate ultrasound transducers or probes

A61B 8/4477

{related to hygiene or sterilisation}
Definition statement

This place covers:

Any means for protecting the probe from outside environment, e.g. hygienic cover.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Sanitary sheaths for endoscopes

A61B 1/00142

{Device being portable or laptop-like}
Definition statement

This place covers:

media286.png

[US2012083693]

{involving a docking unit}
Definition statement

This place covers:

Docking unit or station for power or data transfer, either for connecting the probe or the monitoring unit

{Means for identifying the diagnostic device, e.g. barcodes}
Definition statement

This place covers:

Any means for identifying the diagnostic apparatus or component parts thereof, e.g. replaceable components. Includes barcodes, memory chips or RFIDs.

{related to the probe}
Definition statement

This place covers:

Constructional details of sonic diagnostic devices relating to the probe itself.

{Details of catheter construction}
Definition statement

This place covers:

Particular construction of catheter devices, e.g. balloons, pigtails, basket.

media287.png

[US2003208119]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Use of catheters for ultrasound diagnosis

A61B 8/12

Catheters per se

A61M 25/00

{Features of the external shape of the probe, e.g. ergonomic aspects}
Definition statement

This place covers:

Any constructional related to the specific design of the external probe shape for a particular purpose, e.g. special grip, attachment for auxiliary devices, connectors.

media288.png

[EP1935343]

{Features of the scanning mechanism, e.g. for moving the transducer within the housing of the probe}
Definition statement

This place covers:

Probes or catheters provided with a mechanical scanning mechanism allowing to move the transducer with respect to the probe housing, e.g. for beam steering.

media289.png

[WO2010013175]

References
Limiting references

This place does not cover:

Electrical steering mechanisms

A61B 8/4488

Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Intra-cavitary probes with motor driven transducer elements

A61B 8/12

Informative references

Attention is drawn to the following places, which may be of interest for search:

Dynamic transducer configuration in devices for short-range imaging with acoustic waves

G01S 15/8934

{involving deflection of the probe}
Definition statement

This place covers:

Probes comprising a scanning mechanism involving a deflection of the probe or part of the probe. Typically used by intracavitary probes (A61B 8/12).

media290.png

[US2009264759]

{Wireless probes}
Definition statement

This place covers:

Probes comprising wireless data and/or power transmission means. Includes pill-like cameras

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of data transmission

A61B 8/56

Wireless probes for inspecting or analysing materials

G01N 29/2481

{using several separate ultrasound transducers or probes}
Definition statement

This place covers:

Simultaneous use of multiple probes or transducers in similar or different modes for scanning of one or a plurality of patient body parts.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Using separate transducers for transmission and reception in devices for short-range imaging with acoustic waves

G01S 15/8913

{characterised by features of the ultrasound transducer}
Definition statement

This place covers:

Specific details or configuration of the transducer adapted for medical imaging application, e.g. particular transducer shape

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Static transducer configuration in short-range imaging systems

G01S 15/8909

{the transducer being a phased array}
Definition statement

This place covers:

Use of phased array transducers for electrical steering of the sound beam.

{characterised by the arrangement of the transducer elements (devices for short-range imaging using particular transducer elements arrangements under G01S 15/8909; arrangements of transducers in generation of mechanical vibrations of infrasonic, sonic or ultrasonic frequency B06B 1/0607)}
Definition statement

This place covers:

Particular arrangement of the transducer elements for facilitating the diagnostic technique, e.g. annular array on intracavitary probes (A61B 8/12) or T-shaped arrangement allowing to scan perpendicular planes simultaneously (A61B 8/145).

media291.png

[WO2012127737]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Arrangements of transducers in generation of mechanical vibrations of infrasonic, sonic or ultrasonic frequency

B06B 1/0607

Devices for short-range imaging using particular transducer elements arrangements

G01S 15/8909

{Ultrasonic, sonic or infrasonic diagnostic devices with special arrangements for interfacing with the operator or the patient}
Definition statement

This place covers:

Ultrasound diagnostic devices comprising input and / or output means structurally or functionally designed for allowing a specific interaction with the device user.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

ICT specially adapted for the operation of medical equipment or devices

G16H 40/60

Special rules of classification

Documents should be classified in these subgroups only if:

  • they explicitly relate to ultrasound diagnosis devices AND
  • they relate to details of the user interface.
{Displaying means of special interest}
Definition statement

This place covers:

Displays with special properties not covered by any of the subgroups.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Displays for electrocardiography

A61B 5/044

Displays in magnetic or electric diagnostics

A61B 5/742

Displays for radiation diagnostic

A61B 6/461

Special rules of classification

Touch screens should be classified here and as special input means (A61B 8/467).

{characterised by constructional features of the display}
Definition statement

This place covers:

Construction or arrangement of display. Also for goggle-like or head up displays. Supports for display.

media292.png

[WO2010012314]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Display arrangements for sonar systems

G01S 7/52053

{characterised by displaying multiple images or images and diagnostic data on one display (composite display in devices for short-range imaging with acoustic waves G01S 7/52074)}
Definition statement

This place covers:

Combination of images, e.g. side-by-side, superimposed.

Combination of images and other data type, e.g. ECG waveforms or alphanumeric information.

media293.png

[EP2415401]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Processing means adapted for combining images

A61B 8/5238

Composite display in devices for short-range imaging with acoustic waves

G01S 7/52074

{involving a plurality of displays}
Definition statement

This place covers:

media294.png

[US2011/0208050]

{adapted to display user selection data, e.g. icons or menus}
Definition statement

This place covers:

media295.png

[EP0833266]

{adapted to display 3D data (3D imaging and stereoscopic displays in devices for short-range imaging with acoustic waves G01S 15/8993 and G01S 7/52068, respectively; 3D image rendering G06T 15/00; manipulating 3D models for computer graphics G06T 19/00)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

3D image rendering per se

G06T 15/00

3D imaging and stereoscopic displays in devices for short-range imaging with acoustic waves

G01S 15/8993, G01S 7/52068

{characterised by special input means}
Definition statement

This place covers:

Both constructional (e.g. touch screen, trackball) and functional aspects (e.g. specific purpose) of input means.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Particular user interfaces in devices for short-range imaging with acoustic waves

G01S 7/52084

{allowing annotation or message recording}
Definition statement

This place covers:

All types of message recording associated with ultrasound imaging, e.g. annotation on image, sound recording.

{for selection of a region of interest}
Definition statement

This place covers:

Operator selection of region of interest or specific organs to be imaged, e.g. by touch screen, keyboard or switch. Also for definition of ROI after image analysis.

{Diagnostic techniques (A61B 8/13 takes precedence)}
Definition statement

This place covers:

Use of a particular imaging technique or protocol involving ultrasonic waves to obtain a specific image type.

References
Limiting references

This place does not cover:

Ultrasound tomography

A61B 8/13

{involving the use of contrast agent, e.g. microbubbles introduced into the bloodstream (analysis of echo signal exploiting properties of a contrast enhancer in devices for short-range imaging with acoustic waves G01S 7/52039)}
Definition statement

This place covers:

Use of substance, typically introduced into the body, which presents echogenic properties and can therefore be identified and / or tracked by the diagnostic device. Also for surgical instruments coated with echogenic materials to allow them to be tracked (A61B 8/0841).

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Diagnosis of blood vessels

A61B 8/0891

Echographic preparations; ultrasound imaging preparation

A61K 49/22

Analysis of echo signal exploiting properties of a contrast enhancer in devices for short-range imaging with acoustic waves

G01S 7/52039

{involving the acquisition of a 3D volume of data}
Definition statement

This place covers:

Direct acquisition of a 3 dimensional image, e.g. a combination of B-mode and C-mode images.

media296.png

[Smith et al., "Feasibility study: Real-time 3-D ultrasound imaging of the brain", Ultrasound in Medicine and Biology 30(10) (2004)1365-1371, XP004872070]

{involving measuring strain or elastic properties}
Definition statement

This place covers:

Imaging elastic properties (e.g. strain, elastic modulus, stiffness) of tissue by exciting the tissue (by direct mechanical means or ultrasonic radiation force) and detecting the resulting displacement, motion or deformation.

media297.png

[EP1541090]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Determining or monitoring contact between transducer and tissue

A61B 8/429

Extracting elastic properties in devices for short-range imaging with acoustic waves

G01S 7/52042

Special rules of classification

Detection of the effects of tissue excitation can be performed by Doppler measurement (A61B 8/488) or pulse-echo methods. Resultant information is usually displayed as images (called elastograms), representing the spatial distribution of strains, shear waves, elastic moduli or tissue stiffness. Elastograms are often fused with B-mode images (A61B 8/5246) to facilitate identification of the anatomical structures to which they relate.

{involving arbitrary m-mode}
Definition statement

This place covers:

Motion-mode ultrasound wherein pulses are emitted in quick succession along the same path to visualize the spatial variation (e.g. movement) of a reflecting structure as a function of time. May be directly acquired or reconstructed from arbitrary line (straight, curved or polygonal) defined by a user on a B-mode image.

media298.png

[EP1679038]

{involving Doppler signals}
Definition statement

This place covers:

Ultrasound imaging technique using the wavelength (or frequency) shift of ultrasound waves reflected from moving structures. Typically used for the diagnosis of dynamic structures function, e.g. heart movement or blood flow.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

For measuring pulse or heart rate

A61B 8/02

For measuring blood flow

A61B 8/06

For heart diagnosis

A61B 8/0883

For blood vessels diagnosis

A61B 8/0891

Special rules of classification

Often fused with B-mode images (A61B 8/5246) to facilitate identification of the anatomical structures to which Doppler signals relate.

{Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves (image processing per se G06T)}
Definition statement

This place covers:

Ultrasound diagnosis devices involving any kind of data or image processing for enhancement purposes, e.g. artefacts reduction of resolution improvement.

References
Limiting references

This place does not cover:

Image processing per se

G06T

Special rules of classification

Documents should be classified in these subgroups only if:

  • they explicitly relate to ultrasound diagnosis devices AND
  • they relate to details of data or image processing.

Image processing alone should not be classified in A61B 8/00, except when it consists in straightforward steps (e.g. thresholding, filtering) directed to an explicit diagnostic application.

{involving processing of raw data to produce diagnostic data, e.g. for generating an image (reconstruction G06T 11/00)}
Definition statement

This place covers:

Pre-processing of data output from sensor to derive data usable for diagnostic purpose, e.g. filtering, phase modification.

{involving processing of medical diagnostic data}
Definition statement

This place covers:

Any kind of post-acquisition image processing

{for extracting a diagnostic or physiological parameter from medical diagnostic data (for algorithms to analyse biomedical images G06T 7/0012)}
Definition statement

This place covers:

Acquired data is used to derive a particular diagnostic index, e.g. tumour size.

References
Limiting references

This place does not cover:

Algorithms for biomedical image analysis

G06T 7/0012

Informative references

Attention is drawn to the following places, which may be of interest for search:

ICT specially adapted for computer-aided diagnosis

G16H 50/00

{for generating planar views from image data in a user selectable plane not corresponding to the acquisition plane}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Ultrasound diagnosis devices adapted to display 3D data

A61B 8/466

{for combining image data of patient, e.g. merging several images from different acquisition modes into one image (for image registration algorithms G06T 7/30)}
Definition statement

This place covers:

Means for combining images of one or several imaging modalities, e.g. merging of contiguous sub-images to obtain a larger image or multi-modality image registration.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Determination of transform parameters for the alignment of images, i.e. image registration

G06T 7/30

{combining images from the same or different imaging techniques, e.g. color Doppler and B-mode}
Definition statement

This place covers:

Combining images of the patient obtained by a diagnostic technique classified under A61B 8/00.

{combining overlapping images, e.g. spatial compounding}
Definition statement

This place covers:

Compilation of multiple views acquired at different angles.

media299.png

[Rohling, PhD Thesis : 3D Freehand Ultrasound: Reconstruction and spatial compounding]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Spatial compounding for short range imaging systems

G01S 15/8995

{combining images from different diagnostic modalities, e.g. ultrasound and X-ray}
Definition statement

This place covers:

media257.png

[Wein et al., "Automatic CT-ultrasound registration for diagnostic imaging and image-guided intervention", Medical Image Analysis, Volume 12, Issue 5, October 2008, Pages 577-585, http://dx.doi.org/10.1016/j.media.2008.06.006

{involving detection or reduction of artifacts (for image enhancement algorithms G06T 5/00)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Elimination of unwanted signals in devices for short-range imaging using acoustic waves

G01S 7/52077

Determining parameters from multiple pictures

G06T 7/97

{due to motion}
Definition statement

This place covers:

Data or image processing for artefact reduction wherein the artefacts are caused by motion.

{involving retrospective matching to a physiological signal}
Definition statement

This place covers:

Arranging or processing an image or a plurality of images after acquisition for synchronization purpose. Includes synchronization based on an independently acquired signal (e.g. ECG) or on a feature derived from the image(s).

References
Limiting references

This place does not cover:

Synchronizing the ultrasound measurement to a physiological event

A61B 8/543

Retrospective scan-line arrangements in devices for short-range imaging using acoustic waves

G01S 7/52088

{using additional data, e.g. patient information, image labeling, acquisition parameters}
Definition statement

This place covers:

Processing of data using non measured data, such as patient name and age, or image identification. Non measured data can be typically found in the header of a digital image file (e.g. a DICOM header).

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

ICT specially adapted for the handling or processing of patient-related medical or healthcare data

G16H 10/00

{Control of the diagnostic device}
Definition statement

This place covers:

Ultrasound diagnosis devices comprising means for adapting the operation of the device during acquisition.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

ICT specially adapted for the operation of medical equipment or devices

G16H 40/60

{involving acquisition triggered by a physiological signal}
Definition statement

This place covers:

Acquisition control wherein a signal of physiological origin (heart rate, breathing rate) is used to initiate acquisition.

References
Limiting references

This place does not cover:

Retrospective matching to a physiological signal

A61B 8/5284

Informative references

Attention is drawn to the following places, which may be of interest for search:

Synchronization techniques in devices for short-range imaging using acoustic waves

G01S 7/52087

{involving monitoring or regulation of device temperature}
Definition statement

This place covers:

Any means for controlling or assessing the temperature of the diagnosis device, e.g. cooling means for preventing skin burn

{Details of data transmission or power supply}
Definition statement

This place covers:

Ultrasound diagnosis devices comprising:

  • means for transmitting or receiving data to or from an external device or between components of the device, e.g. image transmission to a remote physician workstation for diagnosis; or
  • means for supplying power to any component of the device, e.g. between stationary and moving parts.
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Docking units for ultrasound devices

A61B 8/4433

Wireless diagnostic ultrasound probes

A61B 8/4472

{involving data transmission via a network}
Definition statement

This place covers:

Transmission of diagnostic image data via a network, e.g. from a diagnostic device to a server for archiving.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

ICT specially adapted for the handling or processing of patient-related medical or healthcare data

G16H 10/00

{Testing, adjusting or calibrating the diagnostic device}
Definition statement

This place covers:

Any calibration related features or methods, including phantoms.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for monitoring or calibrating in devices for short-range imaging using acoustic waves

G01S 7/5205

{Remote testing of the device}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

ICT specially adapted for the remote operation of medical equipment or devices

G16H 40/67

{Automatic set-up of the device}
Definition statement

This place covers:

Automatic setup of data acquisition parameters (diagnostic protocol) using patient specific information, e.g. weight, height and/or diagnostic specific information.

{Calibration phantoms (models for medical purposes G09B 23/28)}
Definition statement

This place covers:

Methods or devices for calibration where a reference object (phantom) is used to determine particular properties of the diagnosis device.

media301.png

[US2008139933]

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Calibration phantoms for radiation diagnosis devices

A61B 6/583

Models for medical purposes

G09B 23/28

Instruments for examination by percussion; Pleximeters
Definition statement

This place covers:

Any device used for tapping on a surface of a body area in order to determine the underlying structure condition, e.g. reflex hammer.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Percussion or vibration massage

A61H 23/00

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Pleximeter

Plate to be struck in mediate percussion, generally by a reflex hammer

{Electric apparatus for detecting reflex action, e.g. monitoring depth of anaesthesia (detection of movements A61B 5/11)}
References
Limiting references

This place does not cover:

Determining the level of anaesthesia by measuring a physiological parameter, e.g. EEG, EMG

A61B 5/4821

Informative references

Attention is drawn to the following places, which may be of interest for search:

Detection of movement

A61B 5/11

Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis (vaccination prophylaxis, vaccination therapy A61B 17/20); Sex determination; Ovulation-period determination (menstruation tables G06C 3/00); Throat striking implements
Definition statement

This place covers:

instruments for taking a sample from a body:

  • devices for taking fluid samples or cell samples;
  • biopsy devices;
  • devices for taking faeces samples;
  • containers for storing such samples;
  • devices for determining ovulation;
  • devices for detection of breast cancer;
  • vaccination diagnosis (allergy test patches);
  • devices for sex determination
References
Limiting references

This place does not cover:

Vaccination instruments

A61B 17/20

Menstruation tables

G06C 3/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Surgical instruments in general

A61B 17/00

Surgical cutting instruments

A61B 17/32

Special rules of classification

The breakdown symbols (i.e. the non "parallel" or non "mirror" symbols) and "orthogonal" symbols are to be used for classifying the invention information (in addition to the invention symbols) in case the invention is insufficiently classified by an invention information symbol. They are also to be used for classifying the additional information. They are stored in the additional information field.

{Ovulation-period determination (for animals A61D 17/002)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Ovulation determination for animals

A61D 17/002

Menstruation tables

G06C 3/00

{Devices for taking faeces samples; Faecal examination devices (anal receptacles A61F 5/451)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Anal receptacles

A61F 5/451

{Detection of breast cancer (mammography by transillumination A61B 5/0091, by X-rays A61B 6/502, by ultrasonic means A61B 8/0825)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Mammography by transillumination

A61B 5/0091

Mammography by X-rays

A61B 6/502

Mammography by c ultrasonic means

A61B 8/0825

{Devices for taking samples of body liquids (devices for taking blood samples A61B 5/1405)}
References
Limiting references

This place does not cover:

Devices for taking blood samples

A61B 5/1405

{for taking saliva or sputum samples (devices for receiving spittle A61J 9/00)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Devices for receiving spittle

A61J 9/00

{for taking sperm samples (artificial insemination A61B 17/43; for animals A61D 19/021; genital receptacles for the male member A61F 5/453; massage of the genitals A61H 19/00)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Artificial insemination

A61B 17/43

For animals

A61D 19/021

Genital receptacles for the male member

A61F 5/453

Massage of the genitals

A61H 19/00

{for taking sweat or sebum samples (measuring sweat production A61B 5/4266)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring sweat production

A61B 5/4266

{for taking urine samples (measuring urological functions A61B 5/20; genital receptacles A61F 5/451; urinals for bed-ridden persons A61G 9/006)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Measuring urological functions

A61B 5/20

Genital receptacles

A61F 5/451

Urinals for bed-ridden persons

A61G 9/006

{Casings for storing test samples (A61B 10/0038 and A61B 10/0045 take precedence; preservation of living parts of the human or animal body A01N 1/02; containers for retaining a material to be analysed B01L 3/50; containers for enzymology or microbiology C12M 1/16; swab-sampler being part of enzymology or microbiology container C12M 1/30)}
References
Limiting references

This place does not cover:

Devices for taking faeces samples

A61B 10/0038

Devices for taking samples of body liquids

A61B 10/0045

Informative references

Attention is drawn to the following places, which may be of interest for search:

Preservation of living parts of the human or animal body

A01N 1/02

Containers for retaining a material to be analysed

B01L 3/50

Containers in general

B65D

Apparatus for microbiology

C12M 1/00

Containers for enzymology or microbiology

C12M 1/16

Swab-sampler being part of enzymology or microbiology container

C12M 1/30

Instruments for taking cell samples or for biopsy {(A61B 10/0038 and A61B 10/0045 take precedence; needle locating or guiding means A61B 17/3403; samplers for enzymology or microbiology C12M 1/26; sampling or preparing biological specimens G01N 33/48)}
References
Limiting references

This place does not cover:

Devices for taking faeces samples

A61B 10/0038

Devices for taking samples of body liquids

A61B 10/0045

Informative references

Attention is drawn to the following places, which may be of interest for search:

Surgical Instruments

A61B 17/00 - A61B 17/42

Surgical cutting instruments with sample retaining means

A61B 2017/320064

Needle location or guiding means

A61B 17/3403

Accessories for Surgery and Diagnosis

A61B 90/00

Samplers for enzymology or microbiology

C12M 1/26

Sampling or preparing biological specimens

G01N 33/48

{for prostate}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Minimally invasive operation on prostate:

A61B 2017/00274

{for taking bone, bone marrow or cartilage samples}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Trocars for bone

A61B 17/3472

Filters for solid matter

A61M 1/0056

{means for severing sample}
Definition statement

This place covers:

e.g. with a cutter

{with sample notch, e.g. on the side of inner stylet}
Definition statement

This place covers:

devices with a sample notch, which may be, e.g. on an inner stylet or on an outer cannula

{with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe (A61B 10/025, A61B 10/0266 take precedence)}
Special rules of classification

Instruments for taking bone, bone marrow or cartilage samples

A61B 10/025

Instruments with means for severing sample

A61B 10/0266

Special rules of classification within this group

Instruments for taking bone, bone marrow or cartilage samples

A61B 10/025

Instruments with means for severing sample

A61B 10/0266

{for uterus (A61B 10/0045 takes precedence)}
Definition statement

This place covers:

devices used in or near the uterus, includes devices for cervix

References
Limiting references

This place does not cover:

Devices for taking samples of body liquids

A61B 10/0045

Informative references

Attention is drawn to the following places, which may be of interest for search:

Gynecological or obstetrical instruments

A61B 17/42

Endoscopic instruments
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

General surgery devices to be introduced in the working channel of an endoscope

A61B 2017/0034

Biopsy forceps {, e.g. with cup-shaped jaws}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

General surgical forceps

A61B 17/28

Instruments for depressing the tongue (combined with illuminating and viewing instruments A61B 1/24)
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 13/00

media302.jpg

References
Limiting references

This place does not cover:

Stomatoscopes when combined with illuminating and viewing instruments:

A61B 1/24

Devices specially adapted for vivisection or autopsy (similar devices for medical purposes, see the relevant groups for such devices {; autopsy tables A61G 13/0027})
Definition statement

This place covers:

Instruments or appliances used in connection with autopsy

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

similar devices for medical purposes, see the relevant groups for such devices, e.g.

General Surgical Instruments

A61B 17/00

Autopsy tables

A61G 13/0027

Surgical instruments, devices or methods, e.g. tourniquets (A61B 18/00 takes precedence; contraceptive devices, pessaries, or applicators therefor A61F 6/00; eye surgery A61F 9/007; ear surgery A61F 11/00)
References
Limiting references

This place does not cover:

Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

A61B 18/00

Eye surgery

A61F 9/007

Ear surgery

A61F 11/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Contraceptive devices, pessaries, or applicators therefor

A61F 6/00

Special rules of classification

T The use of the CPC indexing codes (2000-series symbols which include both breakdown and orthogonal symbols) for classifying the additional information is mandatory in this field.

The breakdown and the orthogonal symbols of A61B 17/00 are also used for documents classified in the main trunk of A61B 18/00 to index relevant aspects for which no suitable symbol is available under A61B 18/00, A61B 2018/00005 or A61B 2218/00.

for holding wounds open; Tractors ({specula A61B 1/32} ; drainage appliances for wounds A61M 27/00)
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/02

media303.png

References
Limiting references

This place does not cover:

Specula

A61B 1/32

Drainage appliances for wounds

A61M 27/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

With illuminating arrangements

A61B 1/06

Devices for opening or enlarging the visual field, e.g. of a tube of the body

A61B 1/32

Device for performing tracheotomy

A61M 16/0472

Dilators

A61M 29/00

{with antagonistic arms as supports for retractor elements}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/0206

media303.pngmedia305.png

{for minimally invasive surgery (A61B 17/0218, A61B 17/0281, A61B 17/0469, A61B 17/12013, A61B 17/1285, A61B 17/29, A61B 17/320016 take precedence)}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/0218

media303.png

media307.png

References
Limiting references

This place does not cover:

For minimally invasive surgery in general

A61B 17/00234

For abdominal wall lifters

A61B 17/0281

Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery

A61B 17/0469

For ligaturing or otherwise compressing tubular parts of the body

A61B 17/12013

For applying or removing clamps or clips

A61B 17/1285

Forceps for minimally invasive surgery

A61B 17/29

Endoscopic cutting instruments in general

A61B 17/320016

{for eye surgery}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/0231

media308.png

{for heart surgery (endoscopic heart surgery A61B 2017/00243; endoscopic access devices, i.e. trocars, A61B 17/34)}
References
Limiting references

This place does not cover:

Endoscopic heart surgery

A61B 2017/00243

Endoscopic access devices, i.e. trocars

A61B 17/34

{for immobilizing local areas of the heart, e.g. while it beats (trocars attached to inner organs or inner body tissue A61B 2017/3488)}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 2017/0243

media309.png

media310.png

References
Limiting references

This place does not cover:

Trocars attached to inner organs or inner body tissue

A61B 2017/3488

{Joint distractors}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/025

media311.png

References
Limiting references

This place does not cover:

Bone surgery

A61F 2/30

Hip

A61F 2/32

Knee

A61F 2/38

Shoulder

A61F 2/40

Small joints

A61F 2/42

Spine

A61F 2/44, A61F 2/442

Instruments in general for implant

A61F 2/46

Materials for bone surgery

A61L2/76

Informative references

Attention is drawn to the following places, which may be of interest for search:

For intervertebral joint distraction by acting on anchors embedded in vertebrae

A61B 17/7077

For restoring the shape of collapsed bones by injecting cement into them

A61B 17/8802

For restoring the shape of collapsed bones by expanding devices inside them

A61B 17/885

{Abdominal wall lifters}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/0281

media312.png

{with ring member to support retractor elements}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/0293

media313.png

media314.png

for suturing wounds; Holders or packages for needles or suture materials (suture materials A61L 17/00)
References
Limiting references

This place does not cover:

Suture materials

A61L 17/00

{Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors (A61B 17/0642 takes precedence; fixation devices for tendons or ligaments A61F 2/0811)}
Definition statement

This place covers:

See patent # US2004138707

media315.png

References
Limiting references

This place does not cover:

Surgical staples for bones

A61B 17/0642

Fixation devices for tendons or ligaments

A61F 2/0811

Informative references

Attention is drawn to the following places, which may be of interest for search:

Purse-string suturing

A61B 2017/1142

{Dowels (other bone dowels 17:68; dowels for connecting prosthetic parts A61F 2002/30436)}
References
Limiting references

This place does not cover:

Other bone dowels

A61B 17/68

Dowels for connecting prosthetic parts

A61F 2002/30436

{Rivets (other bone rivets 17:68; rivets for connecting prosthetic parts A61F 2002/30441, A61F 2220/0041)}
References
Limiting references

This place does not cover:

Other bone rivets

A61B 17/68

Rivets for connecting prosthetic parts

A61F 2002/30441, A61F 2220/0041

{Instruments for applying suture anchors (for applying suture clamps, clips or locks A61B 2017/0488)}
References
Limiting references

This place does not cover:

For applying suture clamps, clips or locks

A61B 2017/0488

{Instruments for removing suture anchors (for removing suture clamps, clips or locks A61B 2017/049)}
References
Limiting references

This place does not cover:

For removing suture clamps, clips or locks

A61B 2017/049

{having anchoring barbs or pins extending outwardly from suture anchor body}
Definition statement

This place covers:

Intended to encompass "large" barbs, e.g. ribs going around at least 1/2 of the diameter on the anchor

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

For "thin" barbs (seen in a transversal cross section)

A61B 2017/0427

{having a suture-receiving opening, e.g. lateral opening (lateral eyelet for attaching suture to needle A61B 2017/06019)}
References
Limiting references

This place does not cover:

Lateral eyelet for attaching suture to needle

A61B 2017/06019

{having anchoring barbs or pins extending outwardly from the anchor body}
Definition statement

This place covers:

Rigid barbs

{slotted, i.e. having a longitudinal slot for enhancing their elasticity}
Definition statement

This place covers:

Slotted shaft, i.e. distal part

{with a threaded shaft, e.g. screws}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Threaded staples

A61B 2017/0648

{the shaft being a rigid coil or spiral}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

{the shaft being resilient and having a coiled or helical shape in the released state}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Coil staples

A61B 2017/0649

{cannulated, e.g. with a longitudinal through-hole for passage of an instrument}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

For passage of suture

A61B 2017/0458

{snug fit within the anchor}
Definition statement

This place covers:

Includes caps or covers pressed inside or outside the body anchor. It does also includes snap fit (e.g. connection by tab and recess)

{Surface features on the anchor, e.g. ribs increasing friction between the suture and the anchor}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Increasing friction between anchor and suture; hence if ribs are present to increase snug fit between an additional element and the anchor only this class is given

A61B 2017/045

{with features cooperating with special features on the suture, e.g. protrusions on the suture}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Barbed sutures

A61B 2017/06176

{One way system, i.e. also tensioning the suture}
Definition statement

This place covers:

Triangular barbs on the suture which lock in a hole of the anchor or biased locking means in the hole of the anchor locking on protrusions of the suture

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for tensioning the suture as such

A61B 2017/0496

{Suture bridges}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/0466

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{Instruments for cutting sutures (surgical cutting instruments A61B 17/32)}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/0467

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References
Limiting references

This place does not cover:

Surgical cutting instruments

A61B 17/32

{Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/0218

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References
Limiting references

This place does not cover:

Shuttle needle with sharp tips at both ends

A61B 2017/0609

MIS ligaturing

A61B 17/12013

{having at least one proximally pointing needle located at the distal end of the instrument, e.g. for suturing trocar puncture wounds starting from inside the body (J-shaped suture needles A61B 2017/0608)}
References
Limiting references

This place does not cover:

J-shaped suture needles

A61B 2017/0608

{for reducing heart wall tension, e.g. sutures with a pad on each extremity}
References
Limiting references

This place does not cover:

Reshaping the heart with bags, strips, bands

A61F 2/2481

Informative references

Attention is drawn to the following places, which may be of interest for search:

Cushions encircling the heart

A61F 2/2487

Blood pumps

A61M 1/1068

{Needle or suture guides (guides for drills, pins or wire A61B 17/17; for puncturing needles A61B 17/3403)}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/0482

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References
Limiting references

This place does not cover:

Guides for drills, pins or wire (bone)

A61B 17/17

For puncturing needles

A61B 17/3403

{Hand-held instruments for holding sutures (A61B 17/0469 takes precedence; other holders for needles or sutures A61B 17/06061; surgical forceps A61B 17/28; surgical pincettes A61B 17/30)}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/0483

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References
Limiting references

This place does not cover:

Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery

A61B 17/0469

Other holders for needles or sutures

A61B 17/06061

Surgical forceps

A61B 17/28

Forceps

A61B 17/28; A61B 17/29

Surgical pincettes

A61B 17/30

{Devices or means, e.g. loops, for capturing the suture thread and threading it through an opening of a suturing instrument or needle eyelet}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/0485

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{Suture clamps, clips or locks, e.g. for replacing suture knots; Instruments for applying or removing suture clamps, clips or locks (suture anchors A61B 17/0401; wound clamps or clips A61B 17/08; ligaturing clamps or clips A61B 17/122)}
Definition statement

This place covers:

Illustrative example of subject matter classified in A61B 17/0487

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References
Limiting references

This place does not cover:

Suture anchors

A61B 17/0401

Wound clamps or clips

A61B 17/08

Ligaturing clamps or clips

A61B 17/122

Clamps comprising opposed elements which grasp one vertebra between them

A61B 17/7047

{Instruments for applying suture clamps, clips or locks (for applying suture anchors A61B 2017/0409; for applying wound clamps A61B 17/10; for applying ligaturing clamps or clips A61B 17/128)}
References
Limiting references

This place does not cover:

For applying suture anchors

A61B 2017/0409

For applying wound clamps

A61B 17/10

For applying ligaturing clamps or clips

A61B 17/128