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DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D 7/00 ; means for inserting tampons A61F 13/26 ; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J 1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
Definition statement
This subclass covers:

Devices or processes specially adapted to be used to insert or place media into human bodies (e.g., pumps, syringes, atomisers, insufflators, inhalers) and that do so either

  • by an artificial method (i.e., a human created or contrived method that cannot occur naturally such as hypodermic-syringe injections) or
  • by enhancing a naturally occurring method (e.g., inhalers used in conjunction with normal breathing) other than oral..

Devices or processes specially adapted to be used to place media upon human bodies (e.g., percutaneous devices, radioactive dressings) and that do so either

  • by an artificial method or
  • by enhancing a naturally occurring method (e.g., standard absorption, rubbing substances onto skin).

Devices or processes which are specially adapted to be used to direct, lead, convey, or carry media up to, away from, or within human bodies (e.g., tubes for carrying oxygen, medical pumps, artificial hearts, mechanical blood circulatory assistors, blood oxygenation devices, devices for artificial respiration by treatment with gas or air) and that do so either

  • by an artificial method (e.g., dialysis systems) or
  • by enhancing a naturally occurring method (e.g., standard circulation of blood, standard discharging of bodily waste).

Devices or processes specially adapted to be used to remove, eject, or expel media from human bodies (e.g., suction type breast relievers, discharge draining devices for wounds) and that do so

  • by an artificial method (e.g., subaquatic intestinal cleaning systems) or
  • by enhancing a naturally occurring method (e.g., babies sucking on breast, boils natural discharging).

Devices or processes specially adapted to cause or provoke a change in the state of consciousness of humans (e.g., induce sleep, fully awaken) and that do so in a manner other than one which commonly occurs (e.g., falling asleep on a good mattress, physical exhaustion).

Devices or processes specially adapted to increase or decrease the mental activity of humans while awake (e.g., relax, stimulate) and that do so in a manner other than that which commonly occurs (e.g., creating boredom).

Accessories specially adapted for use with at least one of the above devices and that contribute to the effectiveness or safety of the device or its use.

Specially adapted components having structural features limiting them to use with a device of one of the types specified above.

Relationship between large subject matter areas

When used with animals

If a device or process is usable for both humans and animals for the same purpose and in the same manner, and it is otherwise proper for this subclass, classification is made only in subclass A61M. Similar devices or processes to those covered by subclass A61M that are usable exclusively for animals, or are used in animals in a different manner or for different purposes than for humans, are classified in subclass A61D.

When used with living or dead human bodies

Patent documents for general-purpose medical devices or processes that are otherwise proper for subclass A61M are classified in subclass A61M when they either disclose only being used on living human bodies or broadly disclose being used on humans. Patent documents for general -purpose medical devices or processes that are otherwise proper for subclass A61M and fully identified as being used on both living and dead human bodies are classified in subclass A61M and subclass A01N or A61B Patent documents for similar devices or processes to those covered by subclass A61M that are specially adapted for use exclusively on dead humans are classified only in subclass A01N or A61B.

Implantable prostheses or artificial organ replacements

With regard to human organs and their parts, the exact distinction between the artificial devices implantable into human bodies that are proper for subclass A61F and those proper for subclass A61M is somewhat imprecise. Therefore, for analogous situations that are not specifically covered by existing groups of these subclasses, the following listings are intended to provide guidance. Subclass A61F provides for the following replacements or substitutes for internal body organs or their parts: artificial hollow or tubular parts of organs (e.g., bladders, tracheae, bronchi, hearts valves and blood vessels, bile ducts), structural supporting or maintaining devices for such parts or their natural equivalents (e.g., stents), artificial eyes, and artificial ears. Subclass A61M provides for the following replacements or substitutes for internal body organs or their parts: artificial hearts, artificial livers, artificial ventilators, artificial pancreas, and artificial kidneys.

References relevant to classification in this subclass
This subclass does not cover:

Applications or methods that use specific materials, compositions, or single compounds for the preservation of human bodies or for the preservation of living parts of human bodies

Devices or methods for handling cosmetic or toilet substances

Surgical introduction or removal of body parts or their substitutes

Devices specially adapted for taking blood samples

Devices specially adapted for vivisection or autopsy

Devices or methods for introducing solid, liquid, or gaseous remedies or other materials into or onto the bodies of animals

Prostheses implantable into a human body

Medicinal preparations characterised by special physical form

Chemical aspects of bandages, dressings, absorbent pads, or other surgical articles placed upon into human body

Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents

A61N1/34

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

Devices worn by patients for reception of urine, faeces, catamenial, or other bodily discharges

Application swabs

Devices for receiving spittle

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

Devices worn by patients for reception of urine, faeces, catamenial, or other bodily discharges

Application swabs

Devices for receiving spittle

Special rules of classification within this subclass

When a device or method covered by subclass A61M includes a separating process for body-liquids that utilizes chromatography, and features of general interest related to chromatography are usefully disclosed but not claimed, the features should also be non-obligatorily classified within group B01D 15/08.

Main group A61M36/00 takes precedence over all other main groups of subclass A61M.

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.

Glossary of terms
In this subclass, the following terms (or expressions) are used with the meaning indicated:

Media

Solid, liquid, or gaseous substances or devices (e.g., medicine, food, in vivo testing material, catheters) which are either used by or within human bodies for medical or physical purposes, components of or substances naturally within human bodies (e.g., artificial heart, blood, insulin), or bodily discharge or waste created by human bodies or medical processes taking place within human bodies (e.g., urine).

Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems ({A61M 3/00 to A61M 5/00 , A61M 11/00 to A61M 16/00 , A61M 27/00 to A61M 35/00 take precedence } ; catheters A61M 25/00 ; tube connectors, tube couplings, valves or branch units specially adapted for medical use A61M 39/00 ; devices for taking samples of blood A61B 5/14 ; implements for holding wounds open A61B 17/02 ; { saliva removers for dentists A61C 17/04} ; filters implantable into blood vessels A61F 2/01 ; pumps in general F04)
References relevant to classification in this group
This group does not cover:

Implantable gland structures or devices, e.g. implantable artificial pancreas

Irrigators; Enemata

Syringes; Infusion devices

Infusion devices using feedback of body parameters, e.g. blood-sugar, pressure, artificial pancreas

Sprayers or atomizers

Inhalators

Respirators

Drainage appliances for wounds

Dilators

Devices for introducing or retaining media

Devices for applying media

In vitro human cell grow apparatus

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

Devices for taking samples of blood

Implements for holding wounds open

Saliva removers for dentists

Filters implantable into blood vessels

Devices worn by the patient for reception of urine, faeces, catamenial or other discharge

Non-implantable gland structures or devices, e.g. non-implantable artificial pancreas

Catheters

Tube connectors, tube couplings, valves or branch units specially adapted for medical use

Tissue or organ culture

Pumps in general

Special rules of classification within this group

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.

The "orthogonal" Indexing Code symbols (A61M 2202/00-A61M 2250/00) are also used.

{Containers for suction drainage, e.g. rigid containers}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Blood reservoirs

Special rules of classification within this subclass/group

This group covers containers which are described as being usable in the context of medical suction drainage, they thus can be considered as being part of a suction device. Therefore there is no contradiction with the definition of A61M 1/00. The containers do not need to be rigid but many of them are. They are not required to act as a pump but some do, and then the appropriate subgroups may be applicable (e.g. A61M 1/0009, A61M 1/0011 or A61M 1/0003 in some cases). It does not always make sense to say that they are capable of being subject to vacuum, e.g. in the case that they have a flexible member creating suction this would make no sense. However, if it is clear that a container is not capable of being subject to vacuum there is the special group A61M 1/0019 for those. The fluid does not have to pass through the vacuum source, but it can, in some cases.

{Self-contained vacuum aspirators}
Definition statement
This subgroup covers:

Vacuum aspirators which contain the pumping means and the containers in a compact way, e.g. mucous aspirators for babies

{with means for emptying the suction container, e.g. by interrupting suction}
Definition statement
This subgroup covers:

Containers for suction drainage having foreseen means for emptying the container, e.g. means allowing to remove the container without interrupting the suction or means for interrupting suction so that the container can be removed; pulsating suction is not considered as having interruptions in the sense of the present definition

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

also for blood transfusion

{incorporating a movable wall to create suction, e.g. syringes (with a flexible member creating suction A61M 1/0011 ; cupping glasses A61M 1/08)}
Definition statement
This subgroup covers:

Only drainage containers (thus not syringe pumps where the aspirated material is not entering the syringe barrel) incorporating a movable rigid wall

References relevant to classification in this group
This subgroup does not cover:

Containers with a flexible member creating suction

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

Cupping glasses

Piston (air) pumps for creating suction

A61M2001/0068

{Drainage containers incorporating a flexible member creating suction, e.g. bags in a low-pressure chamber, bellows}
Definition statement
This subgroup covers:

only DRAINAGE CONTAINERS having a flexible member, thus not bulb or membrane pumps where the aspirated material is not collected inside the pump

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

Emptying infusion-containers

Rigid container with flexible liner

Membrane (air) pumps for creating suction

A61M2001/0072

Liner in a rigid container

{Two- or three-bottle systems for underwater drainage, e.g. for chest cavity drainage}
Definition statement
This subgroup covers:

Systems for underwater drainage having a chamber functioning as a "water seal", which acts as a one way valve allowing gas to escape, but not to reenter, often called two- or three bottle systems, e.g. for chest cavity drainage

Synonyms and Keywords

Thoracic or pleural drainage

{Drainage containers not being adapted for subjection to vacuum, e.g. bags (devices worn by the patient for reception of urine A61F 5/44 ; emptying devices for drainage bags B65B 69/0016)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Devices worn by the patient for the reception of urine etc

Emptying devices for drainage bags

Surgical drapes with fluid collection means

Special rules of classification within this subclass/group

This group and A61M1/001 relate to containers which are usable with a suction system. Therefore it is implicit that they are part of a suction device and a subgroup of A61M 1/00. However, a lot of documents describe in detail such a container and not the rest of the suction device or system (pump, drainage tube) necessary for the drainage process. Such a document should still be classified in A61M 1/005 or in A61M1/001 and subgroups, even if it does not describe the rest of the suction systems.

{Gravity drainage systems (A61M 1/0019 takes precedence)}
References relevant to classification in this group
This subgroup does not cover:

Drainage containers not being adapted for subjection to vacuum

{Suction drainage systems (containers therefor A61M 1/0001 ; suction-irrigation systems A61M 1/0058)}
Definition statement
This subgroup covers:

Units with incorporated vacuum source, through which no liquid passes:

References relevant to classification in this subclass/group
This subgroup does not cover:

units with incorporated vacuum source through which liquid passes, these are considered as pumping containers for suction drainage which are comprised in the groups of containers

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

Containers

Suction-irrigation systems

Special rules of classification within this subclass/group

A suction drainage system generally has a suction means, a container and a drainage tube. If the focus is on the container, A61M 1/0001 or its subgroups should be used. If the focus is on the system, A61M 1/0023 or subgroups is used. If both are described, both classifications should be given. If the vacuum source is at the same time the container receiving the drained liquid, then the device is not considered as a system but as a container. Therefor only the appropriate subgroup of A61M 1/0001 should be used or the head group A61M 1/0001 if none of the subgroups applies.

{Suction control (A61M 1/0013 , A61M 1/0041 take precedence)}
Definition statement
This subgroup covers:

This group covers suction irrigation systems describing details of the way suction is controlled

References relevant to classification in this group
This subgroup does not cover:

With means for varying suction manually

Two- or three-bottle systems for underwater drainage

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

Controlling pressure, in general

{Intermittent or pulsating suction (A61M 1/0005 , A61M 1/0062 take precedence)}
References relevant to classification in this group
This subgroup does not cover:

With means for emptying the suction container, e.g. by interrupting suction

Operating alternately

{Handpieces (aspiration tips A61M 1/008)}
Definition statement
This subgroup covers:

Handpieces, these being the proximal part of the device which the surgeon holds in his hand to perform suction drainage, e.g. for controlling suction

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

Aspiration tips

{with means for varying suction manually (suction control A61M 1/0031)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Suction control more generally

{by changing the section of the line}
Definition statement
This subgroup covers:

Handpieces with means for varying suction manually by changing the cross section of the line, e.g. changing the cross section of the line by pinching tubing

{by changing the size of a vent (in combination with changing the section of the line A61M 1/0043)}
References relevant to classification in this group
This subgroup does not cover:

In combination with changing the section of the line

{Means preventing overflow or contamination of the pumping systems (combined with rigid drainage containers A61M 1/0001)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Combined with rigid drainage containers

{Filters for solid matter (similar devices for dental use A61C 17/046)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

For dental use

{Suction-irrigation systems (aspiration tips supplying fluids A61M 1/0084 ; combined with tracheal tubes A61M 16/0463)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

In endoscopes

Aspiration tips supplying fluids

Combined with tracheal tubes

Dental

{operating alternately (A61M 1/0064 takes precedence)}
Definition statement
This subgroup covers:

Suction irrigation systems whith suction and irrigation being operated alternately

References relevant to classification in this group
This subgroup does not cover:

Handpieces

Single needle systems

{Handpieces therefor}
Definition statement
This subgroup covers:

Handpieces for suction-irrigation systems, these being the proximal part of the device which the surgeon holds in his hand to perform suction-irrigation e.g. for controlling suction and/or irrigation

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

Irrigators with suction means

{Suction pumps (A61M 1/0003 , A61M 1/0011 , A61M 1/0023 , A61M 1/10 take precedence)}
Definition statement
This subgroup covers:

suction pumps for medical purposes except for the groups mentionned as taking precedence and where the pump mechanism is described in detail

References relevant to classification in this group
This subgroup does not cover:

Self-contained vacuum aspirators

Drainage containers incorporating a flexible member creating suction

Suction drainage systems

Blood pumps

{by vacuum created above a liquid flowing from a closed container}
Definition statement
This subgroup covers:

Suction pumps where the vacuum is created above a liquid flowing from a closed container, e.g. pumps for pleural drainage

{using Laval or Venturi jet pumps}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Similar devices in ventilators

A61M2016/0012

{Tube strippers, i.e. for clearing the contents of the tubes (vein strippers A61B 17/00008)}
Definition statement
This subgroup covers:

Tube strippers, which are tools used for removing fluid from medical tubes

References relevant to classification in this group
This subgroup does not cover:

Vein strippers

{Drainage tubes; Aspiration tips}
Definition statement
This subgroup covers:

Drainage tubes and aspiration tips which are related to described suction means

References relevant to classification in this group
This subgroup does not cover:

Wound drainage tubes without described suction means

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

Cupping glasses

Combined with tracheal tubes

Surgical middle ear drainage

Special rules of classification within this subclass/group

This is a subgroup to the group A61M 1/00; if no suction is involved then the documents are not for A61M 1/008 either. However, this group is for documents where details of the drainage tubes or aspiration tips are described, even if no details of the suction are given.

{With gas or fluid supply means, e.g. for supplying rinsing fluids, anticoagulants (for irrigation without suction A61M 3/0279 ; combined with tracheal tubes A61M 16/0463 ; dental instruments with combined rinsing and aspirating A61C 17/0208)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

For irrigation without suction

Double lumen needles

Multi lumen catheters

Combined with endotracheal tubes

Dental

{with a seal, e.g. to stick around a wound for isolating the treatment area}
Definition statement
This subgroup covers:

Drainage tubes and aspiration tips where a seal isolates the treatment area such as in negative pressure wound treatment devices

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

Wound drain tubes

Absorbent bandages or dressings

Absorbent bandages or dressings with possibility of applying fluid

Absorbent bandages or dressings with possibility of applying fluid and pressure

Blood transfusion apparatus (blood infusion by syringes A61M 5/14)
Definition statement
This subgroup covers:

Apparatus for blood transfusion, for blood collection in view of transfusion and for treatment of collected blood in view of later transfusion

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

Blood infusion by syringes

Special rules of classification within this subclass/group

Either collection of blood in amounts interesting for transfusion (taking a sample for diagnosis would not fall under this) or treatment of collected blood in view of later transfusion is required for classification in this group.

{Multiple bag systems for separating or storing blood components}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Details of blood bags

{Means for controlling the quantity of transfused blood, e.g. by weighing the container and automatic stopping of the transfusion after reaching a determined amount}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Containers with means for emptying the container with or without interrupting suction

{combined with blood container shaking means}
Definition statement
This subgroup covers:

Means for controlling the quantity of transfused blood combined with blood container shaking means]

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

Means for agitating or shaking blood containers not in combination with means for controlling the quantity of blood

{Means for agitating or shaking blood containers (A61M 1/0245 takes precedence; shaking in general B01F 11/00)}
References relevant to classification in this group
This subgroup does not cover:

Combined with blood container shaking means

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

Shaking in general

{Apparatus for treatment of blood or blood constituents not otherwise provided for (for agitating A61M 1/025 ; for separating blood components present in distinct layers in a container A61M 1/029)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

For agitating

For separating blood components present in distinct layers in a container

{prior to or for conservation, e.g. for freezing, drying, centrifuging}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Prior to transfusion

Special rules of classification within this subclass/group

Not used to classify new documents. Use A61M 1/0272 instead.

{prior to transfusion, e.g. for washing, filtering, thawing}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Prior to or for conservation

Special rules of classification within this subclass/group

Not used to classify new documents. Use A61M 1/0281 instead.

{Apparatus for treatment of blood or blood constituents prior to or for conservation, e.g. freezing, drying or centrifuging}
Definition statement
This subgroup covers:

Treatment of blood, after collection from a donor, for the purpose of being conserved.

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

Prior to transfusion

{Apparatus for treatment of blood or blood constituents prior to transfusion, e.g. washing, filtering or thawing}
Definition statement
This subgroup covers:

Treatment of blood for the purpose of being introduced into a patient.

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

Prior to or for conservation

{Separating blood components present in distinct layers in a container, not otherwise provided for (containers for storing blood or blood components A61J1/00T ; sampling or analysing blood by separating blood components G01N 33/491)}
Definition statement
This subgroup covers:

Separating stratified blood components.

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

Containers for storing blood or blood components

Sampling or analysing blood by separating blood components

{Artificial}pneumothorax apparatus
Definition statement
This subgroup covers:

Devices for treating pneumothorax (i.e. abnormal collection of gas in the pleural space) and devices for creating and treating a pneumostoma

Milking pumps (feeding-bottles A61J 9/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Feeding bottles

Breast shields

Teats

Brassieres

Cupping glasses
Definition statement
This subgroup covers:

The traditional cupping glasses, used in cupping therapy where a partial vacuum is created in cups placed on the skin either by means of heat or suction; the group contains also some similar devices which are used as poison extractors

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

Suction massage

Special rules of classification within this group

Rigid cups having pumping shut-off valves are coded with

Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps (artificial heart valves A61F 2/24 ; heart stimulation A61H 31/00)
References relevant to classification in this group
This subgroup does not cover:

Heart stimulation

Constructive details of valves therefor

{Non-positive displacement pumps, e.g. impeller, centrifugal, vane pumps}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Electric motors

{Pumps having flexible elements, e.g. with membranes, diaphragms, or bladder pumps}
References relevant to classification in this group
This subgroup does not cover:

Moving membranes in blood filters used for pumping

A61M2001/267

Constructive details of valves therefor

{Drive systems therefor, e.g. mechanically, electromechanically or skeletal muscle drive means}
Definition statement
This subgroup covers:

Drive systems therefor, e.g. mechanically, electromechanically or skeletal muscle drive means.

{using non-rotary electrical means}
Definition statement
This subgroup covers:

Drive systems therefor using non-rotary electrical means e.g. electromagnetic means, magnetostrictive means, thermo-electric-means, piezoelectric means

References relevant to classification in this subclass/group
This subgroup does not cover:

Drives involving a rotary motor

{using a blood vessel as flexible element (not used, see subgroups)}
Definition statement
This subgroup covers:

Pumps using a blood vessel as flexible element even if the blood vessel is a prosthesis

Special rules of classification within this group

documents are only classified in the parallel Indexing Code-code

{using the heart as flexible element}
Definition statement
This subgroup covers:

Pumps using the heart wall as a flexible element, i.e. by acting directly on the heart wall, e.g. by enveloping the heart

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

Bags, strips or bands to improve the function of the heart muscle

{Pulsating membrane pumps without valves, e.g. for counter pulsation, extra-arterial balloon pumps}
Definition statement
This subgroup covers:

Pulsating membrane pumps without valves, e.g. for counter pulsation, extra-arterial balloon pumps

{Intra-arterial balloon pumps, e.g. intra-aortic}
References relevant to classification in this group
This subgroup does not cover:

Other intravascular pumps

A61M2001/125

{Piston pumps}
References relevant to classification in this group
This subgroup does not cover:

Constructive details of valves therefor

{Regulating or controlling systems therefor}
Definition statement
This subgroup covers:

Electronical or mechanical regulation or controlling systems for any type of blood pumps

implantable into the body{(not used, see subgroups)}
References relevant to classification in this group
This subgroup does not cover:

Intravascular balloon pumps

Membrane pumps using a blood vessel as flexible element

{Energy supply devices, converters therefor}
Definition statement
This subgroup covers:

Energy supply devices and converters therefor for all types of blood pumps

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

Telemetry, communication with implanted devices

Dialysis systems; Artificial kidneys; Blood oxygenators;{Reciprocating systems for treatment of body fluids, e.g. single needle systems for haemofiltration, pheris (haemofiltration using non reciprocating systems A61M 1/34 ; extracorporeal blood circuit aspects A61M 1/36)};(processes of separation using semi-permeable membranes B01D 61/00 ; semi-permeable membranes characterised by the material, manufacturing processes therefor B01D 71/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Haemofiltration using non reciprocating systems

Extracorporeal blood circuit aspects

Processes of separation using semi-permeable membranes

Semi-permeable membranes characterized by the material, manufacturing processes therefor

Peritoneal dialysis catheters

with membranes{(A61M 1/30 takes precedence; membranes per se B01D 69/00 , B01D 71/00)}
Definition statement
This subgroup covers:

Dialysis systems, artificial kidneys and blood oxygenators where treatment involves a semi-permeable membrane separating blood from dialysate in a dialyser and separating blood from oxygen in an oxygenator

References relevant to classification in this group
This subgroup does not cover:

Single-needle systems

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

Blood circuits thereof

Membranes per se

Materials and manufacturing or membranes

{Dialysates therefor}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Chemical formulae of dialysates

Medicinal preparation containing inorganic ingredients

Treating water for medical purposes

{Apparatus for preparing dialysates (with regeneration of dialysates A61M 1/1696)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

With regeneration of dialysates

{Degasification (in general B01D 19/00)}
Definition statement
This subgroup covers:

Degasification of dialysates

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

Degasification in general

{intracorporal (A61M 1/28 and A61F 2/022 take precedence)}
Definition statement
This subgroup covers:

Intracorporal (e.g. implanted) dialysis systems, artificial kidneys, blood oxygenators.

References relevant to classification in this group
This subgroup does not cover:

Peritoneal dialysis

Artificial glands

Implanted artificial glands using bioreactors

{Sterilisation or cleaning before or after use (sterilisation of materials in general A61L ; cleaning or sterilisation of membrane modules apart from the machine B01D 65/02)}
Definition statement
This subgroup covers:

Sterilisation or cleaning before or after use of the dialysis device, artificial kidneys or blood oxygenators, this can be both the dialysate or the blood side of the device and is not limited to self-cleaning.

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

Priming, rinsing blood circuits before or after use

Sterilisation of materials in general

Cleaning or sterilisation of membrane modules apart from the machine

{by heat}
Definition statement
This subgroup covers:

Sterilization or cleaning by heat, e.g. by steam

{using chemical substances}
References relevant to classification in this group
This subgroup does not cover:

Priming,rinsing blood circuits before or after use

{Detection of blood traces in dialysate (testing of the membrane modules B01D 65/10 ; investigating fluid-tightness of structures in general G01M 3/00)}
Definition statement
This subgroup covers:

Dialysis systems where means are provided for detecting traces of blood in the dialysate, e.g. to detect the presence of a leak in the membrane

References relevant to classification in this group
This subgroup does not cover:

Other testing of filters for leaks

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

Testing the membrane modules

Investigating fluid-tightness of structures in general

{with recirculating dialysing liquid}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Peritoneal dialysis

{with dialysate regeneration}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Substitution fluid using dialysate

A61M2001/3465

{Blood oxygenators with or without heat-exchangers (A61M 1/1678 takes precedence; membranes therefor B01D 67/00 , B01D 69/00 , B01D 71/00)}
References relevant to classification in this group
This subgroup does not cover:

Intracorporal oxygenators

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

Manufacturing of membranes therefor

Form or properties of membranes therefor

Materials and manufacturing of membranes therefor

{and internal elements}which are moving
Definition statement
This subgroup covers:

Dialysis systems, artificial kidneys and blood oxygenators which incorporate elements internal to the treatment module where the membrane is located which are moving (e.g. moving membranes)

Special rules of classification within this group

Only used as an Indexing Code, documents are classified in B01D

Peritoneal dialysis;{Other peritoneal treatment, e.g. oxygenation}
Definition statement
This subgroup covers:

contains also other peritoneal treatment, e.g. oxygenation

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

Irrigation systems

Bags therefor

Sterile connections

{Catheters therefor}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Sterile connections

{Dialysates therefor}
Informative references
Attention is drawn to the following places, which may be of interest for search:

For other dialysates

Preparation of dialysates

{Reciprocating systems, alternately withdrawing blood from and returning it to the patient, e.g. single-lumen-needle dialysis or single needle systems for haemofiltration, pheresis}
Definition statement
This subgroup covers:

Reciprocating systems, alternately withdrawing blood from and returning it to the patient, e.g. single-lumen-needle dialysis or single needle systems for haemofiltration, pheresis

Oxygenators without membranes
Definition statement
This subgroup covers:

Oxygenators without membranes e.g. bubble oxygenators

Filtering material out of the blood by passing it through a membrane, i.e. haemofiltration, diafiltration{(A61M 1/30 takes precedence; extracorporeal blood circuit aspects A61M 1/36)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Single-needle systems

Extracorporeal blood circuit aspects

{Diafiltration}
Definition statement
This subgroup covers:

Combined dialysis (i.e. using dialysate) and haemofiltration (i.e. with considerable amounts of ultrafiltrate requiring substitution).

{Adding solutions to the blood, e.g. substitution solutions (for preventing coagulation A61M 1/3672)}
References relevant to classification in this group
This subgroup does not cover:

For preventing coagulation

{Substitution rate control as a function of the ultrafiltration rate}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Weighing fresh and used dialysate

{Substitution fluids}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Using dialysate as substitution fluid

A61M2001/3465

{Circuits for the preparation thereof}
Definition statement
This subgroup covers:

Fluidic circuits for the preparation of substitution fluids.

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

Using dialysate as substitution fluid

A61M2001/3465

Special rules of classification within this subclass/group

The fact that the circuits are fluidic does not exclude that they may be electrically controlled.

{with treatment of the filtrate}
Definition statement
This subgroup covers:

Filtering material out of the blood by passing it through a membrane, i.e. haemofiltration, diafiltration, with treatment of the filtrate, e.g. by filtration, dialysis, absorption, chemical treatment, biological treatment, heating

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

with treatment of the filtrate with treatment agent in the same enclosure as the membrane

A61M2001/3475

with treatment of the filtrate by dialysing the filtrate

A61M2001/3479

with treatment of the filtrate by filtrating the filtrate using another crossflow filter, e.g. a membrane filter

A61M2001/3482

with biological or chemical treatment of the filtrate, e.g. chemical precipitation, treatment by absorbents

A61M2001/3486

with treatment of the filtrate by using treatment agents in suspension

A61M2001/3493

{Plasmapheresis; Leucopheresis; Lymphopheresis (A61M 1/3472 takes precedence; single-needle processes A61M 1/30)}
References relevant to classification in this group
This subgroup does not cover:

With treatment of the filtrate

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

Single-needle processes

Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation;{Extra-corporeal blood circuits}
Definition statement
This subgroup covers:

Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation

{Extra-corporeal blood circuits (single-needle circuits A61M 1/30)}
Definition statement
This subgroup covers:

Includes all blood circuits (e.g. also for dialysis, haemofiltration), single needle circuits excepted.

References relevant to classification in this group
This subgroup does not cover:

Single-needle circuits

Double lumen needles

Multi lumen catheters

{Level detectors; Level control}
Definition statement
This subgroup covers:

Blood level detectors and blood level control.

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

Optical liquid level detectors in general

Measuring liquid level in general

Measuring liquid level in infusion

{Gas bubble detectors (blood leak detection by change of transparency of dialysate A61M 1/1692 ; in infusion devices A61M 5/365 ; observing bubbles in a liquid pool for leak detection, in general G01M 3/06)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Blood leak detection by change of transparency of dialysate

In infusion devices

Observing bubbles in a liquid pool for leak detection, in general

{Degassing devices; Buffer reservoirs; Drip chambers; Blood filters (priming A61M 1/3643 ; blood filters for infusion A61M 5/165)}
Definition statement
This subgroup covers:

Degassing devices, buffer reservoirs, drip chambers, blood filters, these devices can be isolated but often some of them are combined in one device

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

Priming

Blood filters for infusion

Filters for solid matter in combination with suction devices

{Blood component filters, e.g. leukocyte filters}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Type of blood component

Filtering out liquids in general

Filters for lipoids

{Blood pressure control, pressure transducers specially adapted therefor}
Definition statement
This subgroup covers:

Blood pressure control in the extracorporeal circuit of a blood treatment system and pressure transducers specially adapted therefor

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

Control of inversion time between collection and reinfusion phase in single needle systems by pressure control

Blood pressure measurement on the patient

{Priming, rinsing before or after use}
Definition statement
This subgroup covers:

Priming, rinsing before or after use of the extracorporeal blood circuit

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

Sterilizing the dialyser

Rinsing for regenerating the filter

Arrangements for blood volume reduction

A61M2001/3606

{Interfaces between patient blood circulation and extra-corporal blood circuit}
Definition statement
This subgroup covers:

Interfaces between the blood circulation of the patient and the extra-corporal blood circuit, e.g. mechanical interfaces such as adapted catheters, needles, cannulas, or electrical interfaces, e.g. electrodes for monitoring proper connection of the patient to the blood circuit

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

Catheter holding devices

{Arterio-venous shunts, fistulae}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Access sites

{Flow rate transducers; Flow integrators (measuring the flow in general G01F)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Measuring flow in general

{for preparing cardioplegia solutions}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Means for cooling

{Cardiac or cardiopulmonary bypass, e.g. heart-lung machines}
Informative references
Attention is drawn to the following places, which may be of interest for search:

With assisted venous return

A61M2001/3667

{Electrical impedance measurement of body fluids; transducers specially adapted therefor}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Other measuring of impedance

{Circuit parts not covered by the preceeding subgroups of group A61M 1/3621}
Definition statement
This subgroup covers:

Circuit parts not covered by the preceeding subgroups of group A61M 1/3621 e.g. connectors, sensors and valves

References relevant to classification in this group
This subgroup does not cover:

Level detectors

Gas bubble detectors

Degassing devices

Blood pressure control

Priming

Interfaces

Flow rate Transducers

For cardioplegia

Cardiac bypass

Impedance measurement

{Means preventing coagulation (aspiration tips with anticoagulant delivery A61M 1/0084)}
Definition statement
This subgroup covers:

Extra-corporeal blood circuits having means preventing coagulation of the blood, e.g. heparine infusion or anticoagulant coating or a geometrical configuration described as minimizing coagulation

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

Aspiration tips with anticoagulant delivery

{Deactivation}
Definition statement
This subgroup covers:

Extra-corporeal blood circuits having means (e.g. chemical, in the blood) preventing coagulation of the blood, which means are thereafter deactivated (e.g. removed or neutralized so as not to compromise the health of the patient)

Synonyms and Keywords

In patent document the following expressions/words " heparin", "ACD" , "citrate" and " liquemine" are often used as synonyms.

{by absorption (A61M 1/3675 takes precedence)}
Definition statement
This subgroup covers:

Extra-corporeal blood circuits whereby the blood is treated by absorption (the absorption of anticoagulants being classified in A61M 1/3675)

References relevant to classification in this group
This subgroup does not cover:

Deactivation of means preventing coagulation

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

Related fluid circuits

Special rules of classification within this group

Distinction between absorption and chemical treatment not always easy, therefore see also

{by irradiation}
Definition statement
This subgroup covers:

Extra-corporeal blood circuits in which the blood is treated by irradiation of any wavelength

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

Sterilization by irradiation in general

{Chemical treatment (A61M 1/3675 takes precedence)}
Definition statement
This subgroup covers:

Extra-corporeal blood circuits in which the blood is treated by chemical means

References relevant to classification in this group
This subgroup does not cover:

Deactivation of means preventing coagulation

Related fluid circuits

Special rules of classification within this group

Distinction between absorption and chemical treatment not always easy, therefore see also A61M 1/3679

{Temperature treatment (heating or cooling infusion media A61M 5/44)}
Definition statement
This subgroup covers:

Hypo-, and hyperthermia devices; not intended for preservation nor for adapting to body temperature, but for treatments with intended irreversible results

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

Hypothermia

Heating or cooling the body for treatment

Heating or cooling devices for bringing media into the body or the media

{using separation based on different densities of components, e.g. centrifuging}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Centrifuges in general

Multiple bag systems therefor

Rotating membrane filtering

A61M2001/262

Removing constituents from donor blood and {storing or}returning remainder to body,{e.g. for transfusion}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Blood transfusion apparatus

Medical syringes, e.g. enemata; Irrigators (A61M 5/00 takes precedence; pistons A61M 5/315)
Definition statement
This group covers:

Medical syringes used for irrigation, e.g. enemata as well as medical irrigators.

Relationship between large subject matter areas

Irrigation systems when combined with suction means classified in A61M 3/00 if the focus of the invention information is on irrigation and in A61M 1/0058 if the focus is on suction. In both cases an additional classification information in the other field may be given.

References relevant to classification in this group
This group does not cover:

Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way, e.g. syringes, needles

Pistons

Catheters

Dilators

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

Suction-irrigation systems

Pistons in syringes for use in subcutaneous, intra-vascular or intramuscular way

Drainage tubes with fluid supply means

Introducing media into body cavities

Baths

Eye baths

Nose baths

For colostomy

Ophthalmic surgery

Special rules of classification within this group

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. The "orthogonal" Indexing Codes scheme is also used.

Further details of subgroups

A61M2003/0204

A61M2003/0208

A61M2003/0212

A61M2003/0216

A61M2003/022

catheter holding devices see A61M 25/02

colostomy with irrigation port see A61F 5/442

This group does not cover devices whose main object is suctioning and which moreover have irrigation means, these are classified in A61M 1/0084

spraying on the skin: A61H 9/0021

surgical drapes with drain fluid collection means A61B 2019/106

splash shields for protection of the surgeon: A61B 19/42

glossary: splash shield

bidets in general see E03D 9/08

Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests ({vaccination appliances for veterinary use A61D 1/025} ; tube connectors, tube couplings, valves or branch units specially adapted for medical use A61M 39/00 ; containers specially adapted for medical or pharmaceutical purposes A61J 1/00 ; { combinations of vial and syringe for mixing or transferring their contents A61J 1/20 ; holders for containers for collecting, storing or administering blood or medical fluids A61J 1/16})
Definition statement
This group covers:

Infusion devices (infusion by gravity, infusion pumps, infusion needles, flow control etc.), syringes and details therefrom (automatic syringes, ampoules syringes, syringe cartridges, pistons, needles), means for preventing injection of air in body, means for desensitising skin, means for cooling or heating media to be infused, means for controlling depth of insertion.

References relevant to classification in this group
This group does not cover:

Devices for transducing body media or for taking media from the body

Introducing media into/onto bodies of animals

Implantable gland structures or devices, e.g. implantable artificial pancreas

Containers for medicinal or pharmaceutical purposes

Suction devices for medical purposes, blood pumps, blood filters…

Catheters

Medicinal preparations

In vitro human cell grow apparatus

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

Measuring of body parameters

Syringes for taking blood samples

Surgical glue applicators

Syringes for injecting impression materials

Ampoules or carpules

Combination of vial and syringe for mixing or transferring their contents

Blood transfusion

Means for agitating

Blood oxygenators

Hemofiltration equipment

Blood filters

Non-implantable gland structures or devices, e.g. non-implantable artificial pancreas

Temperature treatment for blood

Infusion devices using feedback of body parameters, e.g. blood-sugar, pressure, artificial pancreas

Connecting catheter tubes to hubs

Guide needles for catheters

Diffusion through the skin

Microneedles

Access sites

Detecting tissue temperature for diagnostic purposes

Y-connectors

Pressure measurement lumen

Making filter elements

Burettes, measuring cylinders for laboratory use

Heating or cooling in general

Disintegrating medical waste

Disposal of medical waste in general

Making of hollow needles

Grinding sharp-pointed work pieces

Filling of medical containers in general

Pressurized by contraction of elastic reservoir, in general

Receptacles for refuse disposal in general

Cell injection devices

Linear peristaltic pumps, in general

Telescopic rods

Valves in general

Heat exchange in general

Hypodermic projectiles

Apparatus of the syringe type

Indicating or measuring liquid levels

Medical informatics

Systems or apparatus for checking the occurrence of a condition

Holders comprising label

Holders for storage of radioactive sources

Heating by electric fields

Special rules of classification within this group

The classification of "additional information" in the group is mandatory, but only if the additional information has some importance.

For example, the main invention is an infusion pump of the reciprocating piston type (A61M 5/14216), but a regulating valve (A61M 5/16881) is present in the device. If the valve is just mentioned as being a general valve with no specific details given on how the valve relates to the pump, then it is not worth giving a class in the field of valves. On the contrary, if the valve is well described and presents some interesting features that cooperates with features from the pump, then the document should also be classified in the field of regulating valves.

All documents dealing with medical informatics (software, programming of infusion devices, etc.) should be classified under G06F 19/00. In A61B 8/0891 , the blood vessels is analysed for diagnosis purpose only. All couplings and connectors are classified in A61M 39/00.

Further details of subgroups

Delivery of contrast media

This subgroup also comprises various accessories for infusing by gravity, like drip chambers or hanging up devices (see relevant sub-classes).

Most subdivisions in this subgroup mainly describe the way in which the infusion pump works (peristaltic pump, roller pump, impeller pump…).

Other subdivisions however also relates to the fact that the pump is portable or implantable.

These two subgroups contain general information on infusion needles. The details of said needles can be found in A61M 5/32 and A61M 5/34.

Blood filters are now found in A61M 1/34 and A61M 1/36.

This subgroup contains flow controllers (regulating the flow of media), but also means for sensing or detecting flow anomalies.

Many different kind of syringes can be found in these sub groups. The automatic syringes (a certain action on a trigger will start the automatic injection of the media, no further action being required from the user) are found in A61M 5/20. A61M 5/24 and A61M 5/28 regroups the ampoules syringes. In A61M 5/24 the syringe bears the needle, in A61M 5/28 the needle is present on the ampoule.

A61M 5/30 relates to syringes for injection by jet action, also know as needleless syringes.

More syringes can also be found in other fields (A61J 1/00-A61J 1/22, A61B 5/14, A61B 17/00-A61B 17/921).A61M 5/31 and A61M 5/315 general details of syringes (caps, constructional features, priming, valves, plugs, filling, etc.) can be found in the subgroup A61M 5/31.

The subgroup A61M 5/315 relates to detail of the piston (construction, blocking means, etc.), but also to dosing mechanisms (gears, electrical parts, axial movements, rotational movements) and other dosing-related subjects (feedback, keeping track of administered doses, etc.).

This subgroup deals with details of needles, and especially with ways to protect the user from the needle (needle caps, apparatus for removing or destroying needles, semi- or fully-automatic retractable needles, semi- or fully-automatic needle sleeves for protecting the needle, etc.).

In the blood vessel is located prior to an injection (treatment).

This subgroup deals with means for cooling or heating the device (pump, syringe, etc.) or the media contained in the device (infusate, medicine, etc.).

Often forgotten, this group useful group deals with means for preventing re-use, or also for indicating if the device has already been used or tampered with.

{not used, see subgroups and A61M 5/24}
Special rules of classification within this group

not used, see subgroups and A61M 5/24

Baths for subaquatic intestinal cleaning
Relationship between large subject matter areas

Baths are also classified in A61H 35/00 and A61H 33/00

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

Baths

Bathing devices for special therapeutic or hygienic purpose

Irrigators

Sprayers or atomisers specially adapted for therapeutic purposes (in general B05B ; { aerosol containers B65D 83/14})
Definition statement
This group covers:

Sprayers or atomisers of liquid, e.g. medication, water for humidification

References relevant to classification in this subclass/group
This group does not cover:

Device to humidify the respiration air

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

Sprayers or atomisers specially adapted for therapeutic purposes in general

Aerosol container

Spraying onto the body

Bath for the nose

Irrigator

Special rules of classification within this group

Also contains nebulizers.

The "subdivision" Indexing Code symbols (i.e. the non "parallel" Indexing Code symbols) are used for classifying as well the invention information as the additional information. They are stored only in the additional information field". The "orthogonal" Indexing Code symbols are also used.

{using ultrasonics (spraying or atomising liquids using ultrasonic vibrations in general B05B 17/06)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Spraying or atomising liquids using ultrasonic vibrations in general

Inhalators using ultrasonic

operated by air {or other gas}pressure applied to the liquid {or other product}to be sprayed or atomised{(sprayers for horticulture A01G , A01H ; killing insects A01M ; air humidifying by nozzles F24F 6/14 , F24F 6/18 ; cooling by spraying F28B , F28C)}
Definition statement
This subgroup covers:

Devices with positive air pressure.

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

Sprayers for horticulture

Killing insects

Air humidifying by nozzles

Cooling by spraying

Atomizer for painting

Adding O2, perfume to air

Air disinfection

Special rules of classification within this subclass/group

The positive air pressure be created by any means (i.e., piston, pre-pressurized canister with propellant, etc.)

operated by the vapour pressure of the liquid to be sprayed or atomised{(air-humidification, e.g. "room humidifiers" F24F 6/00)}
Definition statement
This subgroup covers:

Electrical heated vaporiser, e.g. devices in which the vapor pressure of the liquid acting in a confined space is used to propel the liquid through an orifice to spray or atomize the liquid.

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

Air-humidification, e.g. "room humidifiers"

Humidifiers

Electrical heated vaporizers

{using heaters}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Heating the liquid

A61M2016/109

Special rules of classification within this subclass/group

Heater vaporizes the liquid or acts on liquid in confined space to increase vapour pressure.

of the injector type
Definition statement
This subgroup covers:

Devices with a venturi system, i.e. non pocket size.

References relevant to classification in this subclass/group
This subgroup does not cover:

Pocket atomiser

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

Operated by air

Spraying apparatus

Single unit with follower

Pocket atomisers of the injector type{(aerosol cans A61M 15/009)}
Definition statement
This subgroup covers:

Devices with a venturi system, i.e. pocket size.

References relevant to classification in this subclass/group
This subgroup does not cover:

Injector type, i.e. non pocket

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

Aerosol cans

Insufflators for therapeutic or disinfectant purposes,{i.e. devices for blowing a gas, powder or vapour into the body (hand-held units in which gas flow is produced by muscular energy at the moment of use B05B 11/062)}
Definition statement
This group covers:

Devices to inflate a cavity for easy access.

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

Hand-held units in which gas flow is produced by muscular energy at the moment of use

Special rules of classification within this group

The "subdivision" Indexing Code symbols (i.e. the non "parallel" Indexing Code symbols) are used for classifying as well the invention information as the additional information. They are stored only in the additional information field"

The "orthogonal" Indexing Code symbols are also used.

{Blowing gases other than for carrying powders, e.g. for inflating, dilating or rinsing}
Informative references
Attention is drawn to the following places, which may be of interest for search:

For the destruction of noxious animals or noxious plants

Instrument for medical examination

Insufflating needles therefor

Inhalators{(drug delivery in endotracheal tubes A61M 16/04)}
Definition statement
This group covers:

Devices or processes specially adapted to be used to insert or place media into human bodies by enhancing a naturally occurring method other than oral.

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

Drug delivery in endotracheal tubes

For animals

Medicinal preparation for inhaling

Special rules of classification within this group

The "subdivision" Indexing Code symbols (i.e. the non "parallel" Indexing Code symbols) are used for classifying as well the invention information as the additional information. They are stored only in the additional information field"

The "orthogonal" Indexing Code symbols are also used.

{using prepacked dosages, one for each application, e.g. capsules to be perforated or broken-up}
Definition statement
This subgroup covers:

Inhalators with unit dose with manual feeding, e.g the single dose is inserted manually in the inhaler.

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

Single unit with follower

Injector type

{using multiple prepacked dosages on a same carrier, e.g. blisters}
Definition statement
This subgroup covers:

An inhaler/inhalator that accepts a package containing plural dosages of inhalant, e.g. multi-unit dose, with automatic feeding

{Inhalators with dosage or measuring devices (A61M 15/0028 takes precedence; dosage devices incorporated in aerosol cans B65D 83/52)}
Definition statement
This subgroup covers:

Inhalators with multi-dose reservoir, i.e. without capsule or blister

References relevant to classification in this group
This subgroup does not cover:

Using prepacked dosages

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

Details of the spray nozzle

Dosage devices incorporated in aerosol cans

With aerosol and not described dosing

{using ultrasonics (spraying or atomising liquids using ultrasonic vibrations in general B05B 17/06)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Spraying or atomising liquids using ultrasonic vibrations in general

Sprayers using ultrasonic

{Inhalation chambers}
Definition statement
This subgroup covers:

Inhalators with spacers

{using medicine packages with incorporated spraying means, e.g. aerosol cans (pocket atomiser of the injector type A61M 11/08)}
Definition statement
This subgroup covers:

Inhalators having a pressurized container, e.g. Metered Dose Inhaler (MDI). A sufficient structure to generate the spray is part of a package that is introduced into the inhalator and subsequently removed for disposal.

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

Pocket atomiser of the injector type

Details of the spray nozzle

Dosing

Aeorosol container

{mechanically breath-triggered}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Inhalation valve providing indirect breath activation

A61M2015/0013

Flow sensor

Inhalation detection

with activated or ionised {fluids, e.g. electrohydrodynamic (EHD) or electrostatic devices}; Ozone-inhalators {with radioactive tagged particles}
Definition statement
This subgroup covers:

Also bubble jet technology inhalators.

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

Electrostatic spray gun

Sterilisation, deodorisation of air

Sterilisation using UV light

Bubble jet

A61M2015/025

Apparatus for generating ions

Inhaling appliances shaped like cigars, cigarettes or pipes{(simulated smoking devices, e.g. imitation cigarettes, A24F 47/002)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Simulated smoking devices, e.g. imitation cigarettes

Inhaling devices inserted into the nose
Definition statement
This subgroup covers:

Also eyes drop, aromatherapy devices.

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

Spraying apparatus

Eucaliptus vaporizer

Correcting deformities of the nose

Bath for nose

Irrigation

Using the smell sense

Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes (stimulating the respiratory movement by mechanical, pneumatic or electrical means, iron lungs combined with gas breathing means A61H 31/00 ; { supine patient supports therefor A61H 31/008} ; respiratory apparatus in general A62B; respirators for working under water B63C 11/00)
Definition statement
This group covers:

Respirator, ventilator, devices for inflating the lungs

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

Respiratory apparatus in general

Respirators for working under water

Stimulating the respiratory movement by mechanical, pneumatic or electrical means, iron lungs combined with gas breathing means

Supine patient supports therefor

Gas reservoir

Computer driven apparatus

Models for artificial respiration

Gas bath

Portable appliance comprising a gas cartridge

Testing ventilators

Anaesthesia apparatus

Supply appliance

Inserts in the lungs, e.g. stents

Hyperbaric chamber

Correcting deformities of the nose

Device for preventing snoring

Pneumothorax apparatus

Breathing simulator

Wall plug

Pipelines, hospital facility gas supply system

Special rules of classification within this group

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.

{Means for re-breathing exhaled gases, e.g. for hyperventilation treatment}
Definition statement
This subgroup covers:

Also devices for hypoxic delivery of gas, e.g CO2.

References relevant to classification in this group
This subgroup does not cover:

CO2 absorbing device

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

Training device

Hypoxic training

Hyperbaric training room

{Mouth-to-mouth respiration (teaching or training models G09B 23/288)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Teaching or training models

{with alarm devices}
Definition statement
This subgroup covers:

Also devices with screens, calculation of resistance, compliance, calculation systems, feedback, estimation system, systems using root square techniques, PID system.

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

Alarm in general

Resistance, compliance of the lungs

Monitoring

Stimulation

Special rules of classification within this subclass/group

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.

{Liquid ventilation}
Definition statement
This subgroup covers:

Also ventilation in aerosol form.

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

Oxygenated solution

{Pumps therefor}
Definition statement
This subgroup covers:

Pumps with variable mechanical maximum volume, limited stroke, hand driven, motor driven, otherwise driven.

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

Reinflatable by elasticity

A61M2016/0084

Medical pump

Air pumping means for inhalator

A61M2011/006

Pumps in general

F04

Other air pumps

Mask with pump

Special rules of classification within this group

The devices classified in A61M 16/0075, A61M 16/0078 are often inflatable (mostly in anaesthesia), but are not reinflatable by elasticity.

{Blowers or centrifugal pumps}
Definition statement
This subgroup covers:

Pumps in the form of a fan, a turbine.

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

Gas pump in general

Helmet with fan

{Tidal volume piston pumps}
Definition statement
This subgroup covers:

Tidal-Volume means a precise inspiratory volume, e.g. single stroke piston pump.

{Breathing bags}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Material therefor

Reinflatable by elasticity

A61M2016/0084

Buffer chamber

{Removing used or expired gases or anaesthetic vapours}
Definition statement
This subgroup covers:

Devices with charcoal, active carbon filter

References relevant to classification in this group
This subgroup does not cover:

Filtering, sterilising or disinfecting the exhaust air in drainage systems

A61M2001/0052

Bacterial filters in the expiratory path

A61M2016/1065

{High frequency jet ventilation}
Definition statement
This subgroup covers:

Mainly used for ventilation without respiratory movement, or in case of lung puncture.

specially adapted for anaesthetising{(A61M 16/104 , A61M 16/18 take precedence)}
Definition statement
This subgroup covers:

Ventilation devices used for anaesthesia.

These devices include in general a closed circuit generally including a CO2 absorber.

References relevant to classification in this group
This subgroup does not cover:

Anaesthetic mixer

Vaporizers

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

CO2 absorber

Determining the level of anesthesia

Tracheal tubes (catheters in general A61M 25/00)
Definition statement
This subgroup covers:

They are tubes introduced generally through the mouth or the nose of the patient, e.g. endotracheal tubes.

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

Catheters in general

Prosthesis in the bronchi

Y-shaped prosthesis

Ostial prosthesis

Endoscope

Stethoscope

{External cuff pressure control or supply, e.g. synchronisation with respiration}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Mushroom valve

A61M2016/206

Pressure indicating device

Blood pressure cuff pressurizing apparatus

{Nasoendotracheal tubes}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Nasal cannula

{combined with suction tubes, catheters or the like; Outside connections}
Definition statement
This subgroup covers:

A manifold, a suction inside the tube.

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

Aseptic insertion for cathters in general

Acces means to the stomach

A61M2016/0415

Gastrotomy feeding tube

Special rules of classification within this group

Also combined with drug delivery tube.

{Tracheostomy tubes; Devices for performing a tracheostomy; Accessories therefor, e.g. masks, filters}
Definition statement
This subgroup covers:

Tube introduced through the trachea, e.g. tracheostomy tube.

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

Obturators

A61M2016/0429

Artificial nose, transtracheal catheter, (trans)cricothyroid catheter, coniostomy prosthesis

{with valves at the proximal end limiting exhalation, e.g. during speaking or coughing (air passages from trachea to oesophagus or to pharynx, artificial epiglottis A61F 2/203)}
Definition statement
This subgroup covers:

Example: To enable the patient to speak.

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

Air passages from trachea to oesophagus or to pharynx, artificial epiglottis

{Masks, filters, surgical pads, devices for absorbing secretions, specially adapted therefor}
Definition statement
This subgroup covers:

Also plaster therefor

{Devices for performing a tracheostomy}
Definition statement
This subgroup covers:

Tools for making an opening.

{Mouthpieces; Means for guiding, securing or introducing the tubes (guiding or introducing with laryngoscopes A61B 1/267 ; holding devices on the body A61M 25/02)}
Definition statement
This subgroup covers:

Also includes holders.

References relevant to classification in this group
This subgroup does not cover:

Mouthpieces for live saving

Mouthpieces for divers

Mouthpieces in lung exercisers

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

Holding devices on the body

Obturators

Detecting from outside

Correcting deformities of the nose

Head rest

Patient airway positionning

Guiding or introducing with laryngoscopes

Respiratory or anaesthetic masks
Definition statement
This subgroup covers:

Also hoods, cups

References relevant to classification in this group
This subgroup does not cover:

Breathing masks in general

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

Fabrication by injection moulding

Fabrication of gas mask

Half mask

First aid mask

Correction of the deformities of the nose

Protective and/or surgical face mask

{Nasal cannulas or tubing (devices for improving normal breathing through the nose A61F 5/08 ; nose filters A62B 23/06 ; outside holding devices A61M 25/02)}
Definition statement
This subgroup covers:

Also mounts for nasal tube.

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

Devices for improving normal breathing through the nose

Nose filters

Outside holding devices

Occluding, e.g. bellows

{Holding devices therefor}
Definition statement
This subgroup covers:

Strap, headgear.

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

Fastening means

Means for securing a tube

Aquatic headgear

Bellows; Connecting tubes{(having means for taking samples G01N 1/22); Water traps; Patient circuits}
Definition statement
This subgroup covers:

Between a ventilator and the mask.

References relevant to classification in this group
This subgroup does not cover:

Supports

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

Having means for taking samples

Heated tubes

A61M2016/1095

Tube support

{Condensation traps}
Definition statement
This subgroup covers:

To dry the gas.

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

Vaporization chambers

Drying gas

{Joints or connectors}
Definition statement
This subgroup covers:

Connector: the element between the ventilation device and the tube

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

Detection of the connection

Wall plug

Tube connector

{Connecting tubes}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Hoses in general

Pipelines, hospital facility gas supply system

Tubes

Preparation of respiratory gases or vapours
Definition statement
This subgroup covers:

“Vapours”: any substance in the vapour phase.

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

Local anaesthesia

Cryogenic reservoir

O2 for aircraft

{specially adapted for anaesthetics (A61M 16/18 takes precedence)}
Definition statement
This subgroup covers:

Mixer for anaesthetics with safety solution.

References relevant to classification in this group
This subgroup does not cover:

Vaporizers

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

Local anaesthesia

Adapted for anaesthesia

Veterinary applications

Mixing in general

{Devices for humidifying or heating the inspired gas by using recovered moisture or heat from the expired gas}
Definition statement
This subgroup covers:

HME, Heat and Moisture Exchanger, e.g. passive humidifier.

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

CO2 canister

Special rules of classification within this group

Also for anaesthetic agent.

{Filters (A61M 16/047 , A61M 16/22 take precedence; water traps A61M 16/08)}
Definition statement
This subgroup covers:

Gas filtering for medical purpose

References relevant to classification in this group
This subgroup does not cover:

Masks, filters, surgical pads, devices for absorbing secretions, specially adapted therefor

CO2 canister

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

Respiratory filter

Water traps

Filter in general

{by influencing the temperature (A61M 16/1045 takes precedence)}
Definition statement
This subgroup covers:

The temperature of the gas or the liquid.

References relevant to classification in this group
This subgroup does not cover:

Heat and Moisture Exchanger

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

Tube

Heating

Biomedical electrical heating control

by mixing different gases
Informative references
Attention is drawn to the following places, which may be of interest for search:

Anaesthesia mixer

Filling gas container

Vessel with valves

Gas mixing in general

by mixing different fluids, one of them being in a liquid phase
Definition statement
This subgroup covers:

Also powder mixing with gas.

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

Mixing in general

Sprayers with venturi

Devices to humidify the respiration air{(A61M 16/1045 takes precedence)}
References relevant to classification in this group
This subgroup does not cover:

Heat and Moisture Exchanger

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

CO2 canister

Humidification in general

F24F6/80, F24F 6/18, F22B 1/28

Steam bath

Passive humidifier

Vaporizer

Mixing gas and liquid in general

Air-humidification, e.g. "room humidifiers"

{Water-reservoir filling system, e.g. automatic}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Filling systems in general

Vaporising devices for anaesthetic preparations
Definition statement
This subgroup covers:

Vaporizer for a product such as Halothane, e.g. halogenated ethers.

{Filling systems}
Definition statement
This subgroup covers:

Anaesthetic-reservoir filling system; contains also level detection system therefor.

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

Level detection

Filling system

Filling systems in general

{Locking systems}
Definition statement
This subgroup covers:

System for safely locking a vaporizer to an anaesthesia machine; also for humidifier, bottles, switching system.

Valves specially adapted to medical respiratory devices
Definition statement
This subgroup covers:

Also PEEP(Positive End Expiratory Pressure) valve.

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

Respiratory valve

Apparatus for passive exercising

Divers equipment

Valve in general

Breathing training devices

Medical valve

{Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves}
Definition statement
This subgroup covers:

Check valve.

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

Vibration means

A61M2016/0006

Respiratory one-way valves

One-way valves in general

Special rules of classification within this group

Also tanks

Carbon dioxide-absorbing devices;{Other means for removing carbon dioxide}(cartridges with absorbing substances for respiratory apparatus A62B 19/00)
Definition statement
This subgroup covers:

CO2 canister, soda-lime canister

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

Cartridges with absorbing substances for respiratory apparatus

Filter

Local anaesthesia (syringes therefor A61M 5/00); Hypothermia (A61M 5/42 takes precedence; cooling blood in a bypass of the arterial system A61M 1/36)
References relevant to classification in this group
This group does not cover:

Desensitising skin

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

Syringes therefor

Cooling blood in a bypass of the arterial system

Cooling internal body cavities

Epidural puncture

Special rules of classification within this group

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. The "subdivision" Indexing Code symbols (i.e. the non "parallel" Indexing Code symbols) are used for classifying as well the invention information as the additional information. They are stored only in the additional information field." The "orthogonal" Indexing Code symbols are also used.

Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
Definition statement
This group covers:

Devices or processes specially adapted to increase or decrease the mental activity of humans while awake (e.g., relax, stimulate) and that do so in a manner other than that which commonly occurs (e.g., creating boredom).

References relevant to classification in this subclass/group
This group does not cover:

Alarm clocks

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

Measuring the level of relaxation

Body clock

Light or sound exposure not directed to the corresponding sensory organ

Biorhythms

Speech recognition

Tinnitus

Respiratory rhythm indicators

Special rules of classification within this group

The "subdivision" Indexing Code symbols (i.e. the non "parallel" Indexing Code symbols) are used for classifying as well the invention information as the additional information. They are stored only in the additional information field".The "orthogonal" Indexing Code symbols are also used.

{Isolation chambers used therewith, i.e. for isolating individuals from external stimuli (other treatment rooms or enclosures A61G 10/00)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Other treatment rooms or enclosures

Isolators

Bathing devices

for inducing sleep or relaxation, e.g. by direct nerve stimulation, hypnosis, analgesia (for massage A61H ; electrotherapy A61N , e.g. applying alternating or intermittent electric currents for producing anaesthesia A61N1/34)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Sleep evaluation

For massage

Analgesic delivery

Electrotherapy

Applying alternating or intermittent electric currents for producing anaesthesia

A61N1/34

Electrical

A61N 1/3601 , A61N1/36A5

Catheters; Hollow probes (dilators A61M 29/00 ; { peritoneal catheters A61M 1/285 ; tracheal tubes A61M 16/04 ; for drainage A61M 27/00 ; for uterus, vagina or rectum A61M 31/00} ; for measuring or testing A61B ; { materials for catheters A61L 29/00})
Definition statement
This group covers:

Static features, like structure, shape, mechanical properties and method of making of catheters.

References relevant to classification in this group
This group does not cover:

Peritoneal catheter

Tracheal tubes

Dynamic features of catheters, like steering, guiding and advancing

Drainage tubes

Catheters for natural cavities (e.g. uterus, vagina, rectum)

Surgical instruments

Surgical instruments for veterinary use

Feeding tubes

Materials for catheters

Special rules of classification within this group

Due to the more general character of the main group A61M 25/00 and its sub groups, there is an overlap with several different sub classes (A61B, A61F, A61N, A61J, A61K, A61L) and main groups, especially with the main groups A61B 17/00 (Surgical instruments, devices or methods), A61B 18/00 (Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body) and A61B 19/00 (Instruments, implements or accessories for surgery or diagnosis not covered) and their sub groups.

The difference should be made by the following (an example is given for surgical uses, but is valid for other uses as well, e.g. catheters for use in stent delivery see A61F 2/95, endoscopes see A61B 1/00, catheters for use as feeding tubes A61J 15/00):

If the technical feature, which appears to be the invention, is disclosed only in relationship with a surgical use, respectively adapted only for surgical use, it should be classified as invention information in the relevant sub group/sub groups of A61B 17/00, A61B 18/00 or A61B 19/00.

If this technical feature appears to add a beneficial contribution to the documentation in A61M 25/00, then classify it as additional information in the relevant sub group/sub groups of A61M 25/00.

If the technical feature, which appears to be the invention, is disclosed in a general way, i.e. only one embodiment relates to a surgical use, or other uses are disclosed equivalently, then it should be classified as invention information into the relevant sub group/sub groups of A61M 25/00.

If this technical feature appears to add a beneficial contribution to the documentation in A61B 17/00, A61B 18/00 or A61B 19/00, then classify it as additional information in the relevant sub group/sub groups of A61B 17/00, A61B 18/00 or A61B 19/00.

In doubt please classify in more sub classes, main groups and/or sub groups, rather than in too less.

{with a pressure sensor at the distal end}
Definition statement
This subgroup covers:

Catheters with additional pressure sensors

Sensors at the distal end are only used for pressure measurement

The sensor is at the distal end, i.e. within the body during a measurement.

No details of pressure sensor or pressure measurement

The features "pressure sensor", "pressure measurement" are only additional features of the invention and not the invention itself

References relevant to classification in this group
This subgroup does not cover:

Pressure measurement catheters, details of pressure measurement, pressure sensors and other sensors

{having an additional lumen transmitting fluid pressure to the outside for measurement}
Definition statement
This subgroup covers:

Catheters with additional pressure sensors

Sensors are only used for pressure measurement.

The sensor is at the proximal end or outside of the catheter.

No details of pressure sensor or pressure measurement.

In this subgroup the features "pressure sensor", "pressure measurement" are only additional features of the invention and not the invention itself

References relevant to classification in this group
This subgroup does not cover:

Pressure measurement catheters, details of pressure measurement, pressure sensors and other sensors

{having two or more concentrically arranged tubes for forming a concentric catheter system}
Definition statement
This subgroup covers:

Catheter system, comprising concentric catheter tubes movable with respect to each other

Systems with two or more tubes/catheters within each other in a concentric way forming one entity

References relevant to classification in this group
This subgroup does not cover:

Catheters having telescopic features, interengaging nestable members movable in relation to one another

Systems with catheter and outer tubing

{Epidural catheters}
Definition statement
This subgroup covers:

The use of catheters as epidural, peridural, peritoneal and spinal catheters; the terms "epidural, peridural, peritonal, spinal" trigger the classification into this subgroup.

References relevant to classification in this group
This subgroup does not cover:

Puncturing needles

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

For the use in the brain or cerebrum

For the use in the spinal column

{having visible markings on its surface, i.e. visible to the naked eye, for any purpose, e.g. insertion depth markers, rotational markers or identification of type}
Definition statement
This subgroup covers:

Visible (optical) markers on catheters, tubes or guide wires.

References relevant to classification in this group
This subgroup does not cover:

Radio-opaque and ultrasound marker on catheters or medical tubes

Magnetic marker on catheters or medical tubes

Radio-opaque markers on guide wires

Visible markers which specifically belong to surgical instruments

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

Optical identification means

{Making of catheters or other medical or surgical tubes}
Definition statement
This subgroup covers:
  • Methods and processes of making and manufacturing of catheters and medical or surgical tubes
  • This subgroup covers as well apparatus for manufacturing, which are specifically used for producing catheters
References relevant to classification in this group
This subgroup does not cover:

Connections between catheter tubes and inflation tubes

Method of making balloon catheters

Method of making a guide wire

Making of surgical instruments

Making of surgical instruments for transferring non-mechanical forms of energy (specific features for such devices, e.g. electrodes, cryotips)

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

Devices for applying a coating

Process for applying a coating

Cutting tools

For a single-step process, or a specific step in a multi-step process:

Injection moulding

Extrusion moulding

Blow moulding

Shaping by stretching, e.g. drawing though a die

Shaping of tube ends

Lining or sheathing

Joining

For a multi-step process:

Producing tubular articles

Special rules of classification within this group

If a process leads to an interesting product, classify as well in the relevant Indexing Code subgroup

All machines that are specifically used for performing these manufacturing processes should be classified here, including large machines. If they are not used specifically for manufacturing catheters, then please see the references in this definition.

General methods for manufacturing and apparatuses for performing such methods are classified in the classes regarding methods, e.g. class B21 (for metal products), B26 (for cutting), B29 (for plastic products). Methods for manufacturing, which are adapted to produce only a certain medical device (e.g. catheter, guidewire) will be classified in the class for the product, e.g. A61 (for medical products). Apparatus for manufacturing a medical device which belong to a certain method for manufacturing will be classified in the same subgroup as the method.

For example, a method and apparatus of manufacturing of a special shaped balloon for the sole use with a balloon catheter (balloon used only for a catheter) will be classified in A61M 25/1029 as invention information. Usually this document should also be considered for B29C 49/00 (blow moulding) in addition.

As another example, a method and apparatus for manufacturing a plastic tube including blow moulding which discloses only casually that catheters can be made with it, will be classified in the relevant subgroup of B29C 49/00 as invention information and will get a classification in A61M 25/1029 as additional information if this method/apparatus could be relevant for a future search in this field.

{Forming the tip of a catheter, e.g. bevelling process, join or taper}
Definition statement
This subgroup covers:

Also apparatus for manufacturing, which are specifically used for forming the tip of a catheter.

References relevant to classification in this group
This subgroup does not cover:

Method of making balloon catheters

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

Catheter characterised by the distal end

Cutting tools

Injection moulding

Extrusion moulding

Blow moulding

Shaping of tube ends

Joining

Special rules of classification within this group

If a process leads to an interesting product, classify as well in the relevant Indexing Code subgroup of A61M 25/0067

{with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils}
Definition statement
This subgroup covers:

Methods or processes of making or manufacturing of catheters or medical or surgical tubes, which have structures made of different materials incorporated into bulk material, e.g. through moulding, or in-between two coatings.

This subgroup covers also apparatus for manufacturing, which are specifically used for embedding structures into catheters.

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

Catheters with embedded materials

Devices for applying a coating

Process for applying a coating

Injection moulding

Extrusion moulding

Blow moulding

Lining or sheathing

Producing tubular articles

Special rules of classification within this group

If a process leads to an interesting product, classify as well in the relevant Indexing Code subgroup A61M 25/005

{Weakening parts of a catheter tubing, e.g. by making cuts in the tube or reducing thickness of a layer at one point to adjust the flexibility}
Definition statement
This subgroup covers:

This group covers as well apparatus for manufacturing, which are specifically used for weakening parts of catheter tubings.

References relevant to classification in this subgroup
This subgroup does not cover:

Tip steering due to weakening outer material

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

Catheters with regions for increasing flexibility

Cutting tools

Special rules of classification within this group

If a process leads to an interesting product, classify as well in the relevant Indexing Code subgroups of A61M 25/0054

{Connecting a tube to a hub}
Definition statement
This subgroup covers:

This group covers as well apparatus for manufacturing, which are specifically used for connecting a catheter tube to a hub

References relevant to classification in this group
This subgroup does not cover:

Connections between catheter tubes and inflation tubes

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

Joining

Tube connectors; tube couplings

Characterised by the hub

Special rules of classification within this group

If a process leads to an interesting product, classify as well in the relevant Indexing Code subgroup A61M 25/0097

{Making lateral openings in a catheter tube, e.g. holes, slits, ports, piercings of guidewire ports; Methods for processing the holes, e.g. smoothing the edges}
Definition statement
This subgroup covers:

This group covers as well apparatus for manufacturing, which are specifically used to make lateral openings in a catheter tube

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

Side holes

Cutting tools

{specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections}
Definition statement
This subgroup covers:
  • All catheters which stay in the body for a prolonged period of time and are specially adapted therefore, e.g. antimicrobial coatings, surface properties, drainage
  • Urinary catheters (used within the bladder, urethra, etc.) only for long-term use
  • All catheters which stay in the body for a prolonged period of time and are therefore specially adapted to reduce the risks of a long term treatment (e.g. inflammation, clotting), e.g. by coatings, surface properties
Informative references
Attention is drawn to the following places, which may be of interest for search:

Closure means for urethra

Devices worn by the patient for reception of urine

Drainage catheters

{Cleaning catheters or the like, e.g. for reuse of the device, for avoiding replacement}
Definition statement
This subgroup covers:
  • Cleaning the catheter from the inside and/or outside.
  • Cleaning with or without solutions.
  • Cleaning with or without mechanical means, e.g. brush.
Informative references
Attention is drawn to the following places, which may be of interest for search:

Cleaning pipes or tubes,external surfaces

Cleaning pipes or tubes, internal surfaces

Special rules of classification within this group

Give A61M 25/00 in addition to the Indexing Code subgroup A61M 2025/0019, if only a process or an apparatus for cleaning a catheter or medical tube is disclosed.

Otherwise give the most relevant classification symbol, e.g. cleaning a balloon catheter with a special shape: A61M 25/1002 and A61M 2025/0019.

{Packages specially adapted therefor (combined with means for introducing catheters, e.g. dispensers, A61M 25/0113); catheter kit packages (for surgical articles A61B 19/026)}
Definition statement
This subgroup covers:

Packages only for catheters, medical tubes and guide wires

References relevant to classification in this group
This subgroup does not cover:

Casings for packaging, protecting or dispensing (surgical) articles

Packages specially adapted for devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way

Packages or dispensers for (surgical) needles or sutures

Aseptic insertion devices

Catheter dispensers

Packages or dispensers for prostheses or other implants

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

Containers, packaging elements or packages specially adapted for particular articles or materials

Containers, packaging elements or packages for contents presenting particular transport or storage problems

Containers or packaging with special means for dispensing contents (i.e. to take things out of a package)

Containers, packaging elements or packages specially adapted for particular articles or materials

{characterised by the form of the tubing (A61M 25/0054 takes precedence)}
Definition statement
This subgroup covers:

Tubings with specific shapes of the outer tubing or the inner lumen, e.g. rectangular outer tubing

References relevant to classification in this group
This subgroup does not cover:

With regions for increasing flexibility (takes precedence)

{Expandable catheters or sheaths}
Definition statement
This subgroup covers:

Catheters, medical tubes or sheaths which are expandable over their entire or at least sufficient length (not tip only)

References relevant to classification in this group
This subgroup does not cover:

Balloon catheter

Dilators

For holding in lumen

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

Guide tubes

Trocars; Puncturing needles, details of tips or shafts

{having a collapsible lumen}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Trocars; Puncturing needles, details of tips or shaft

{Multi-lumen catheters with stationary elements (catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M 2025/0681 ; catheters comprising telescoping coaxial elements A61M 2025/0175)}
Definition statement
This subgroup covers:
  • Tubes defining the multi-lumens or the multi-lumens themselves do not move relative to each other
  • Aspiration and irrigation catheters should be classified into this group as well
  • Only multi-lumen catheters
References relevant to classification in this group
This subgroup does not cover:

Balloon catheters

Concentric catheters

Catheter tip with multiple lumens

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

Drainage tubes; Aspiration tips

Catheters for dialysis

Interfaces of extra-corporeal blood circuits

{characterized by features relating to at least one lumen located at the proximal part of the catheter, e.g. alterations in lumen shape or valves (catheter hubs A61M 25/0097)}
Definition statement
This subgroup covers:
  • Multilumen catheters with features relating to the proximal part of the lumens
  • Only multi-lumen catheters
References relevant to classification in this group
This subgroup does not cover:

characterised by the hub

{characterized by features relating to least one lumen located at the middle part of the catheter, e.g. slots, flaps, valves, cuffs, apertures, notches, grooves or rapid exchange ports (catheter shaft surface irregularities A61M 2025/006)}
Definition statement
This subgroup covers:
  • Multilumen catheters with features relating to the middle part of the lumens
  • Only multi-lumen catheters
References relevant to classification in this group
This subgroup does not cover:

Side holes at distal tip

Balloon catheter

Having a special surface topography or special surface properties

{characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves (catheter tips A61M 25/0067)}
Definition statement
This subgroup covers:
  • Multilumen catheters with features relating to the distal part of the lumens
  • Only multi-lumen catheters
References relevant to classification in this group
This subgroup does not cover:

Distal tip features generally

{characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Extra-corporeal blood circuits

Catheters for dialysis

{pre-formed, e.g. specially adapted to fit with the anatomy of body channels (urethral catheters A61F 2/04)}
References relevant to classification in this group
This subgroup does not cover:

Implantable prosthesis in hollow or tubular parts of organs

Pre-shaped drainage appliances, for use in the urethral or ureteral tract

Pre-shaped guide wires

Tip steering with pre-shaped mechanisms

{Micro catheters, cannula or the like having outside diameters around 1 mm or less}
Definition statement
This subgroup covers:

Classify documents into this group if the outer diameter of a catheter is 1 mm or less or the word "micro catheters", etc. is used.

{multi-layered, e.g. coated (coating materials A61L 29/08)}
Definition statement
This subgroup covers:

Multi-layer structures of catheters made e.g. by coating tubes, by coextruding tubes, by laminating tubes

References relevant to classification in this group
This subgroup does not cover:

Coating materials

{Coatings for improving slidability}
References relevant to classification in this group
This subgroup does not cover:

Coating materials

{with embedded materials for reinforcement, e.g. wires, coils, braids}
Definition statement
This subgroup covers:

Features to reinforce catheter tubes.

References relevant to classification in this group
This subgroup does not cover:

Methods of making catheters with embedded structures

Tip steering due to inner reinforcing means

Improve flexibility of catheters

{made from fenestrated or weakened tubing layer}
Definition statement
This subgroup covers:

Catheter tubes reinforced by using an embedded fenestrated additional tube

References relevant to classification in this group
This subgroup does not cover:

Reinforcement by embedded coils or braids

{with regions for increasing flexibility}
References relevant to classification in this group
This subgroup does not cover:

Method of making catheters by weakening parts of a catheter tubing, e.g. by making cuts in the tube or reducing thickness of a layer at one point to adjust the flexibility

Tip steering due to weakening outer material

Tip steering due to material with different mechanical properties

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

Catheters having a soft tip

{provided with an antibacterial agent, e.g. by coating, residing in the polymer matrix or releasing an agent out of a reservoir}
References relevant to classification in this group
This subgroup does not cover:

Drug delivery coatings

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

Biological active materials

{Catheters delivering medicament other than through a conventional lumen, e.g. porous walls or hydrogel coatings}
Definition statement
This subgroup covers:

Catheters using unconventional ways (i.e. other than delivery through large holes) for medicament delivery, e.g. through porous walls, hydrogel coatings with incorporated medicaments, through coils.

References relevant to classification in this group
This subgroup does not cover:

Antibacterial coatings

Side openings

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

Biological active materials

{having an electroactive polymer material, e.g. for steering purposes, for control of flexibility, for locking, for opening or closing}
References relevant to classification in this group
This subgroup does not cover:

Tip steering

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

Materials for catheters characterised by their function

{having a special surface topography or special surface properties, e.g. roughened or knurled surface}
Definition statement
This subgroup covers:

Catheters with an unusual surface topography (i.e. other than standard smooth surfaces) for solving technical problems, e.g. roughened surface for increasing friction between tissue and catheter.

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

Endoscopes with roughened shaft

Endoscopes with grooved shaft

{having features to improve the sliding of one part within another by using lubricants or surfaces with low friction (coatings A61M 2025/0046)}
Definition statement
This subgroup covers:

Catheters which have specific features to reduce frictions, e.g. roughened surface, lubricants, in use with a second entity, e.g. guidewire.

References relevant to classification in this group
This subgroup does not cover:

Coatings

{having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body}
Definition statement
This subgroup covers:

Means for changing the mechanical properties, that are inserted while the catheter is already in place within the human body

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

Catheters or medical tubes with inner stiffening members, which will be inserted into the catheter only for insertion or introduction purposes, i.e. they will be inserted while the catheter is introduced into the body and removed after insertion of the catheter into the body.

Endoscopes with stiffening means

{characterised by the distal end, e.g. tips (A61M 25/0054 , A61M 25/04 take precedence; balloon catheters A61M 25/10)}
References relevant to classification in this group
This subgroup does not cover:

With regions for increasing flexibility (takes precedence)

Holding in the body (takes precedence)

Balloon catheters

Surgical instruments for transferring non-mechanical energy to the body (ablation)

Tip steering

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

Surgical instruments for scraping out cavities of body organs

Distal tips of endoscopes

{Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure}
Definition statement
This subgroup covers:
  • Tip structure can be internal (i.e. inside the lumen) or external (i.e. outside the lumen onto the catheter shaft)
  • Curved tip refers to an angled distal tip with respect to the rest of the catheter shaft,
  • Tips specially adapted to fit with the anatomy of body channels should not be classified here
  • Atraumatic tips which are atraumatic because of their shape (and not because of material choice).
References relevant to classification in this group
This subgroup does not cover:

Pre-formed, e.g. specially adapted to fit with the anatomy of body channels

Special rules of classification within this group

Check whether atraumatic tip should also be classified in A61M 25/008 and/or A61M 2025/0081.

{Tip not integral with tube}
Definition statement
This subgroup covers:

Separate tips either of the same material as the proximal tube and attached by e.g. gluing, welding or of a different material than the proximal tube

{Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked}
References relevant to classification in this group
This subgroup does not cover:

Catheter with injection needles

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

Side holes for perfusion

Side holes for perfusion

Needles for infusion

{Multiple separate lumens (multiple separate lumens throughout the catheter A61M 25/0026)}
Definition statement
This subgroup covers:

When main catheter lumens split into several lumens only at the distal tip of the catheter.

References relevant to classification in this group
This subgroup does not cover:

Multi-lumen catheters with stationary elements

{Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable}
References relevant to classification in this group
This subgroup does not cover:

Balloon catheters

Expandable structures for holding within the body

Tools at the distal tip

{Valve means}
Definition statement
This subgroup covers:

Valves at the distal tip

References relevant to classification in this group
This subgroup does not cover:

Cerebrospinal drainage, e.g. valves

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

Valves (if the disclosure of the document emphasises the details of a valve)

{Separate user-activated means, e.g. guidewires, guide tubes, balloon catheters or sheaths, for sealing off an orifice, e.g. a lumen or side holes, of a catheter}
Definition statement
This subgroup covers:

Only the sealing of a catheter or tube lumen with a separate device

References relevant to classification in this group
This subgroup does not cover:

Occlusion of natural lumens

Catheter with collapsible lumen

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

Guide wire having a balloon

{Soft tip}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Catheters having regions for increasing flexibility

{Catheter tip comprising a tool}
Definition statement
This subgroup covers:
  • Tools at the distal tip of a catheter
  • A tool is a device which interacts with the surrounding tissue, i.e. it has an impact on the patient
  • Tools can be internal (i.e. inside the lumen) or external (i.e. outside the lumen onto the catheter shaft) but linked to the catheter
References relevant to classification in this group
This subgroup does not cover:

Pre-formed, e.g. specially adapted to fit with the anatomy of body channels

{being one or more injection needles}
Definition statement
This subgroup covers:
  • Catheters with needles for drug delivery into the surrounding tissue
  • Catheters with needles for holding and for drug delivery
  • If the details of the construction of a catheter with a needle appears to be the "invention" (the technical feature is the "invention"), then it should be classified here
References relevant to classification in this group
This subgroup does not cover:

Drug delivery through needles without catheter

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

Endoscopic needles

Special rules of classification within this group

Please propose the following classes as well:

Solid needle for holding A61M 2025/0095

Holding in a body lumen A61M 25/04

If the medical treatment of a body with such a catheter appears to be the "invention" (the use is the "invention") A61B 17/3478

If no catheter is disclosed, only drug delivery A61M 5/00

{the needles having bent tips, i.e. the needle distal tips are angled in relation to the longitudinal axis of the catheter}
Definition statement
This subgroup covers:

A catheter with multiple needles at its distal end, The needles are protruding along the longitudinal axis of the catheter. The tip of the needles themselves are bend out of plane and are therefore no longer parallel to the longitudinal axis of the catheter

{the needle having a bent tip, i.e. the needle distal tip is angled in relation to the longitudinal axis of the catheter}
Definition statement
This subgroup covers:

A catheter with a single needle at its distal end, The needle is protruding along the longitudinal axis of the catheter. The tip of the needle itself is bend out of plane and is therefore not any longer parallel to the longitudinal axis of the catheter

{wherein at least one needle is a microneedle}
References relevant to classification in this group
This subgroup does not cover:

Details of microneedles

{being one or more needles protruding from the distal tip and which are not used for injection nor for electro-simulation, e.g. for fixation purposes}
References relevant to classification in this group
This subgroup does not cover:

Introducing instruments through an endoscopic needle

Electrodes for stimulation

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

Holding in a body lumen

{being laterally outward extensions or tools, e.g. hooks or fibres}
References relevant to classification in this group
This subgroup does not cover:

Catheters with injection needles

Catheters with solid needles e.g. for holding

Electrodes

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

Surgical instruments for scraping out cavities of body organs

{characterised by the hub (connectors A61M 39/10)}
Definition statement
This subgroup covers:
  • Hubs for introducing fluid or other devices
  • Handles without steering purpose
References relevant to classification in this group
This subgroup does not cover:

Method of connecting a hub to a tubing

Handles for tip steering

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

Tube connectors; tube couplings

Introducing, guiding, advancing, emplacing or holding catheters (A61M 25/10 takes precedence)
Definition statement
This subgroup covers:
  • Dynamic features of catheters and medical tubes, e.g. advancing, guiding, steering
  • Holding devices for catheters or medical tubes
  • Guide tubes and guide needles
  • Guide wires
References relevant to classification in this group
This subgroup does not cover:

Balloon catheter

{Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod}
Definition statement
This subgroup covers:

Catheters or medical tubes with inner stiffening members, which will be inserted into the catheter only for insertion or introduction purposes, i.e. they will be inserted while the catheter is introduced into the body and removed after insertion of the catheter into the body.

References relevant to classification in this group
This subgroup does not cover:

Means for changing the mechanical properties, that are inserted while the catheter is already in place within the human body

{Steering means as part of the catheter or advancing means; Markers for positioning (systems for detection of markers A61B)}
Definition statement
This subgroup covers:
  • Steering means for steering the whole catheter, which are part of a catheter and not a separate device
  • Markers, which are located on the catheter or medical tube
  • If the markers are interesting for the identification of catheters or medical tubes (not marker specially adapted for surgical instruments)
References relevant to classification in this group
This subgroup does not cover:

Systems for detection of markers, without using radiation or US

Systems for detection of markers, using radiation

Systems for detection of markers, without using US

Markers, which specifically belong to surgical instruments

Radio-opaque markers on guide wires

Surgical robots for guiding instruments in the body; if the control device of this robots is outside the body of the patient

Tip steering

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

Endoscopes, for steering device is disclosed

Radio-opaque indicia

Special rules of classification within this group

All markers should additionally be sent to A61B 19/54

Steering mechanisms of endoscopes (steering of the whole endoscope body) should be classified as the following:

If the technical feature, which appears to be the invention, is disclosed in a general way, i.e. not limited only to the use with an endoscope, then it should be classified as invention information in A61M 25/0105.

If the technical feature, which appears to be the invention, is limited only to the use with an endoscope, but it appears to add a beneficial contribution to the documentation in A61M 25/0105, then classify it as additional information in A61M 25/0105.

{using radio-opaque or ultrasound markers}
Definition statement
This subgroup covers:

If the markers are interesting for the identification of catheters or medical tubes (not marker specially adapted for surgical instruments)

References relevant to classification in this group
This subgroup does not cover:

Ultrasound markers, which specifically belong to surgical instruments

{Aseptic insertion devices}
References relevant to classification in this group
This subgroup does not cover:

Tracheal tubes combined with catheters

{Mechanical advancing means, e.g. catheter dispensers}
Definition statement
This subgroup covers:

Devices which are adapted mechanically for moving a catheter in respect to the patient, e.g. catheter dispenser, mechanical catheter insertion devices

References relevant to classification in this group
This subgroup does not cover:

Guide wire insertion devices

{self-propelled, e.g. autonomous robots (A61M 25/0122 takes precedence)}
Definition statement
This subgroup covers:

Self-propelled devices, where the control of such devices is within the device and not outside the patient

References relevant to classification in this group
This subgroup does not cover:

Advancing means having fluid drives by external fluid in an open fluid circuit (takes precedence)

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

Micromanipulators

Endoscopes using self-propulsion, e.g. capsule endoscopes, if a camera is part of the device

{with fluid drive by external fluid in an open fluid circuit}
References relevant to classification in this group
This subgroup does not cover:

Bodily fluids

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

Endoscopes using self-propulsion, e.g. capsule endoscopes

{Catheters carried by the bloodstream, e.g. with parachutes; Balloon catheters specially designed for this purpose}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Endoscopes using self-propulsion, e.g. capsule endoscopes

{Magnetic means; Magnetic markers}
Definition statement
This subgroup covers:

Magnetic means for guiding a catheter through the body, e.g. system which uses a catheter with a magnet, not marker, and an outer magnetic field for moving the catheter through the body of a patient.

Magnetic markers, which are located on the catheter or medical tube.

References relevant to classification in this group
This subgroup does not cover:

Magnetic markers, which specifically belong to surgical instruments

Systems for detection of markers, without using radiation or US

Special rules of classification within this subclass/group

Magnetic guidance means and markers are classified here. Detection systems are classified in A61B. The combination of position detection and magnetic guidance means will be classified either here if the invention lies within the guidance, or in A61B if the invention lies in detection, or both here and in A61B if the inventions covers both aspects.

{Tip steering devices}
References relevant to classification in this group
This subgroup does not cover:

Steering of the whole catheter

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

Endoscopes

Ablation catheters

Special rules of classification within this subclass/group

Steering mechanisms of endoscopes (steering of the endoscope tip only) should be classified as the following:

If the technical feature, which appears to be the invention, is disclosed in a general way, i.e. not limited only to the use with an endoscope, then it should be classified as invention information in A61M 25/0133 and its sub groups.

If the technical feature, which appears to be the invention, is limited only to the use with an endoscope, but it appears to add a beneficial contribution to the documentation in A61M 25/0133 and its sub groups, then classify it as additional information in A61M 25/0133 and its sub groups.

{having flexible regions as a result of weakened outer material, e.g. slots, slits, cuts, joints or coils}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Regions for increasing flexibility

{having flexible regions as a result of using materials with different mechanical properties}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Regions for increasing flexibility

{having flexible regions as a result of inner reinforcement means, e.g. struts or rods}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Embedded materials

{with pre-shaped mechanisms, e.g. pre-shaped stylets or pre-shaped outer tubes}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Pre-formed catheters

{having telescopic features, interengaging nestable members movable in relations to one another}
Definition statement
This subgroup covers:

Catheters or medical tubes which can adapt their length thanks to a telescopic structure

References relevant to classification in this group
This subgroup does not cover:

Concentric catheters; Systems with two or more tubes/catheters within each other in a concentric way

Systems with catheter and outer tubing

{having external means for receiving guide wires, wires or stiffening members, e.g. loops, clamps or lateral tubes}
Definition statement
This subgroup covers:

External means, e.g. hooks, loops, for receiving wire shaped objects, except standard rapid exchange or monorail catheters with standard guidewire guiding means, e.g. short tubes

References relevant to classification in this group
This subgroup does not cover:

Locking guide wires

Rapid exchange or monorail catheters with standard guidewire guiding means

Special rules of classification within this group

Rapid exchange (rx) or monorail catheters with non standard guidewire guiding means, e.g. hooks, loops, should be classified here and in A61M 2025/0183

{Rapid exchange or monorail catheters}
Definition statement
This subgroup covers:

Monorail or rapid exchange (rx) catheters have in contrast to the over the wire catheters only a short guidewire lumen which is parallel over a short distance to the catheter tube.

References relevant to classification in this group
This subgroup does not cover:

Balloon catheters having a guide wire lumens outside the main shaft, i.e. the guide wire lumen is within or on the surface of the balloon

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

Rapid exchange or monorail catheters as well in

A61F2/84, A61N, A61B 17/00

Balloon catheters

Special rules of classification within this group

Rapid exchange (rx) or monorail catheters with non standard guidewire guiding means, e.g. hooks, loops, should be classified here and in A61M 2025/018

{Tunnelling catheters}
Definition statement
This subgroup covers:

Catheters which have a distal portion that enters the human body, leaving it and entering it again to create a fixation outside the human body

References relevant to classification in this group
This subgroup does not cover:

For creating an artificial passage within the body

{for creating an artificial passage within the body, e.g. in order to go around occlusions (for fixation outside the body A61M 25/0194)}
References relevant to classification in this group
This subgroup does not cover:

For fixation outside the body

Holding devices, e.g. on the body
Definition statement
This subgroup covers:

Holding of catheters, medical tubes and guide wires

{specifically adapted for the mouth}
Informative references
Attention is drawn to the following places, which may be of interest for search:
{specifically adapted for the nose}
Informative references
Attention is drawn to the following places, which may be of interest for search:
{specifically adapted for attaching to a body wall by means which are on both sides of the wall, e.g. for attaching to an abdominal wall}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Gastrostomy feeding tubes

Fixing Trocars

{using pads, patches, tapes or the like}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Adhesive plasters

{Catheter, guide wire or the like with means for holding, centering, anchoring or frictionally engaging the device within an artificial lumen, e.g. tube (natural lumen, e.g. vessels A61M 25/04)}
References relevant to classification in this group
This subgroup does not cover:

Holding within a natural lumen, e.g. vessel

in the body, e.g. expansible{(A61M 25/10 , A61M 16/0488 take precedence)}
Definition statement
This subgroup covers:
  • Expandable devices for holding (not balloons)
  • Other mechanisms
References relevant to classification in this group
This subgroup does not cover:

Balloon catheters

Tracheal tubes, means for securing the tubes

Body-piercing guide needles or the like
Informative references
Attention is drawn to the following places, which may be of interest for search:

Trocars; Puncturing needles (usually for introducing bigger sized instruments or tubes)

Needles

Needles

{"Over-the-needle" catheter assemblies, e.g. I.V. catheters}
Definition statement
This subgroup covers:

Systems of a body piercing needle and catheter, catheter will be delivered over the needle for introduction into the body.

References relevant to classification in this group
This subgroup does not cover:

Guide needles, where the catheter will be delivered within the needle for introduction into the body

{Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders}
Definition statement
This subgroup covers:

Needle protection devices, only if a catheter is part of the device

References relevant to classification in this group
This subgroup does not cover:

Needle protection devices for assemblies without catheters

{having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Retractable needles

{Guide needles}
Definition statement
This subgroup covers:
  • Needles for the introduction of catheters, medical tubes or guide wires into the body; catheter will be delivered within the needle for introduction into the body
  • Catheters with needle-shaped tips
References relevant to classification in this group
This subgroup does not cover:

"Over-the needle" catheter assemblies

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

Body piercing needles (usually for introducing bigger sized instruments or tubes)

{Guide tubes}
Definition statement
This subgroup covers:
  • Guide tubes are larger than guide needles
  • Guide tubes are usually made out of plastics
  • Guide tubes usually do not have a piercing tip
References relevant to classification in this group
This subgroup does not cover:

"Over-the-needle" catheters

Guide needles

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

Guide tubes for endoscopes

Guiding arrangements for endoscopes (this group is less relevant for the search for guide tubes; a search in A61B 1/01 should only take place if nothing could be found!)

{Introducing-sheath slitters}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Apparatus for cutting tubes longitudinally

{having means for atraumatic insertion in the body or protection of the tip of the sheath during insertion, e.g. special designs of dilators, needles or sheaths}
Special rules of classification within this group

Documents should get a classification in A61M 29/00 as well

{Flashback chambers}
Definition statement
This subgroup covers:

A flashback chamber is a small chamber connected to a needle in a catheter assembly, which will be filled with blood if a vessel is punctured for indicating the correct insertion of the assembly.

References relevant to classification in this group
This subgroup does not cover:

Devices for taking blood samples

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

Devices for taking blood samples provided with indicating means

{with mandrils}
Definition statement
This subgroup covers:

Guide wire comprising a core wire and an additional wire, which is connected to the core wire or proceed parallel to the core wire, e.g. for different mechanical properties.

{with sliding mandrils}
Definition statement
This subgroup covers:

Guide wire with a movable additional wire, not core wire, within the guide wire, e.g. for steering.

{Mechanisms for insertion of guide wires}
References relevant to classification in this group
This subgroup does not cover:

Mechanisms for the insertion of catheters

{extendable; e.g. mechanisms for extension}
Definition statement
This subgroup covers:

Guide wires with variable length

{Basic structures of guide wires (not used)}
Special rules of classification within this group

This group should not be used and therefore kept empty!

{Methods for making a guide wire}
Definition statement
This subgroup covers:
  • Methods and processes of making and manufacturing of guidewires
  • This group covers as well apparatus for manufacturing, which are specifically used for producing guidewires
References relevant to classification in this group
This subgroup does not cover:

Methods of making catheters

Methods of making balloon catheters

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

Manufacturing of fine wires

Drawing wires

Specifics of dies

Modifying physical properties of steel by cold working

Heat treatment

Coiling wire

Twisting wire

Cutting wire

Connecting wire with wire

Metallic coating of wire

{Device for locking a guide wire in a fixed position with respect to the catheter or the human body}
Definition statement
This subgroup covers:

Locks within and/or outside a catheter or human body

{having radio-opaque features}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Radio-opaque markers on catheters

Balloon catheters ({A61M 25/0125 takes precedence; embolectomy A61B 17/22032 ; retractors A61B 17/02} ; inflatable balloons for placing stents or stent-grafts A61F 2/958 ; { stomach balloons for treatment of obesity A61F 5/0003 ; oesophagal tubes A61J 15/00})
Definition statement
This subgroup covers:

Mechanical and structural features of balloon catheters and balloons for catheters.

Methods for making balloon catheters.

References relevant to classification in this group
This subgroup does not cover:

Catheters carried by the bloodstream, e.g. with parachutes; Balloon catheters specially designed for this purpose (takes precedence)

Embolectomy

Retractor

Stomach balloons for treatment of obesity

Oesophagal tubes

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

Balloons for stent delivery

Balloons for radiation therapy

Cutting balloons

Surgical occlusion balloons

Temporary occlusion for surgery

Scraping balloon

{characterised by balloon shape (A61M 25/1006 , A61M 25/1009 take precedence)}
References relevant to classification in this group
This subgroup does not cover:

Balloons formed between concentric tubes

Balloons anchored to a disk or plate

{Multiple balloon catheters}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Occlusion balloons

Surgical occlusion balloons

{Balloon inflating or inflation-control devices}
Definition statement
This subgroup covers:

Balloon inflating or inflation control devices and balloon deflation and deflation control devices

References relevant to classification in this group
This subgroup does not cover:

Intra-arterial balloon pumps

Systems for priming balloon catheters

{Making of balloon catheters}
Definition statement
This subgroup covers:

This group covers as well apparatus for manufacturing, which are specifically used for producing balloon catheters

References relevant to classification in this group
This subgroup does not cover:

Making of catheters

Method of making a guide wire

Making of surgical instruments

Making of surgical instruments for transferring non-mechanical forms of energy (specific features for such devices, e.g. electrodes, cryotips)

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

Devices for applying a coating

Process for applying a coating

Cutting tools

For a single-step process, or a specific step in a multi-step process:

Injection moulding

Extrusion moulding

Blow moulding

Shaping by stretching, e.g. drawing though a die

Shaping of tube ends

Lining or sheathing

Joining (please contact the gérant in this field if a search must be done here)

For a multi-step process:

Producing tubular articles

Special rules of classification within this group

If a process leads to an interesting product, classify as well in the relevant Indexing Code group

{Surface processing of balloon members, e.g. coating or deposition; Mounting additional parts onto the balloon member's surface}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Devices for applying a coating

Process for applying a coating

Cutting balloons

{Joining of shaft and balloon}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Joining

{Making parts for balloon catheter systems, e.g. shafts or distal ends (A61M 25/1029 takes precedence)}
Definition statement
This subgroup covers:

Methods for making parts of balloon catheters, except balloons.

This group covers as well apparatus for manufacturing, which are specifically used for producing parts of balloon catheters, except of balloons

References relevant to classification in this group
This subgroup does not cover:

Production methods of balloon member

{used for angioplasty}
Definition statement
This subgroup covers:

Balloon catheters, which are used for angioplasty (PTA, PTCA)

References relevant to classification in this group
This subgroup does not cover:

Expandable dilators (e.g. balloons, struts) not used for angioplasty

Special rules of classification within this group

Classify balloon dilators for angioplasty as well in IPC A61M 29/02

{with special features or adapted for special applications (not used)}
Special rules of classification within this group

This group should not be used and therefore kept empty!

{for treating bifurcations, e.g. balloons in y-configuration, separate balloons or special features of the catheter for treating bifurcations}
Definition statement
This subgroup covers:
  • Balloon catheters for treating bifurcations
  • Other means for treating bifurcations
{for temporarily occluding a vessel for isolating a sector}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Surgical occlusion balloons

Temporary occlusion for surgery

{having detachable or disposable balloons}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Stomach balloons for treatment of obesity

{having radio-opaque markers in the region of the balloon}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Radio-opaque markers on catheters

Radio-opaque markers on guide wires

Radio-opaque markers

{having sheaths or the like for covering the balloon but not forming a permanent part of the balloon, e.g. retractable, dissolvable or tearable sheaths (for balloon length adjustment A61M 2025/1068)}
References relevant to classification in this group
This subgroup does not cover:

Sheaths for balloon length adjustment

Stent covering sheaths

K61F2/84B2

{having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Cutting balloons

Scraping balloon

{having balloons for removing solid matters, e.g. by grasping or scraping plaque, thrombus or other matters that obstruct the flow}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Cutting balloons

Scraping balloon

Drainage appliances for wounds or the like,{i.e. wound drains, implanted drains}(implements for holding wounds open A61B 17/02 ; { middle ear drainage A61F 11/002 ; other drainage devices A61M 1/00})
Definition statement
This group covers:
  • Wound drainage tubes.
  • Systems for temporarily by-passing an vessel area with at least a part of circuit outside the body, e.g. for performing a surgical treatment in the by-passed area.
References relevant to classification in this group
This group does not cover:

Implements for holding wounds open

Middle ear drainage

Wound drainage systems (with negative pressure or suction)

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

Valve means for lumen inflow

Multi-lumen catheters

Special rules of classification within this subclass/group

The term “wound” covers all injuries of the skin which originate from the impact of outer forces to the body, e.g. during a surgery, during an accidents.

{Implant devices for drainage of body fluids from one part of the body to another (intraocular A61F 9/00781 ; middle ear A61F 11/002)}
Definition statement
This subgroup covers:

Implantable drainage tubes, e.g. shunts

References relevant to classification in this group
This subgroup does not cover:

Intraocular drainage

Anastomosis

{Cerebrospinal drainage; Accessories therefor, e.g. valves}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Subcutaneous access sites for injecting or removing fluids

{pre-shaped, for use in the urethral or ureteral tract}
Definition statement
This subgroup covers:

Urethral or ureteral pre-shaped stents for draining

Dilators with or without means for introducing media, e.g. remedies (instruments for performing visual medical inspections of cavities or tubes of the body A61B 1/00)
Definition statement
This group covers:

Dilators, which do not change their shapes

References relevant to classification in this group
This group does not cover:

Expandable dilators, e.g. balloons not used for angioplasty, struts

Balloon dilators used for angioplasty

Dilators made of swellable material{(balloon catheters for angioplasty A61M 25/104)}
Definition statement
This subgroup covers:

Expandable dilators, e.g. balloons not used for angioplasty, struts.

Devices for introducing or retaining media, e.g. remedies, in cavities of the body (A61M 25/00 takes precedence; { introducing or retaining ophthalmic products into the ocular cavities A61F 9/0008})
Definition statement
This group covers:

Introducing or retaining medias in natural cavities, e.g. nose, anus, ear, vagina.

References relevant to classification in this group
This group does not cover:

Introducing or retaining medias in vessels

Introducing or retaining ophthalmic products into the ocular cavities

Feeding devices

Injector for tampons

Tablets, pills

{Devices for releasing a drug at a continuous and controlled rate for a prolonged period of time (artificial gland structures or devices A61F 2/022 ; intra-uterine contraceptive devices A61F 6/14 ; tampons for introducing into the vagina A61F 13/20 , A61L 15/00 ; suppositories or bougies for intra-vaginal or intra-uterine application A61K 9/02 ; physical forms of medicinal preparations for sustained or differential drug release A61K 9/20 , A61K 9/50)}
Definition statement
This subgroup covers:
  • Tampons with drug delivery.
  • Electronic pills with drug delivery.
  • Other devices for releasing a drug in a natural cavity.
References relevant to classification in this group
This subgroup does not cover:

Artificial gland structures or devices

Intra-uterine contraceptive devices

Suppositories or bougies for intra-vaginal or intra-uterine application

Medicinal preparations for sustained or differential drug release

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

Electronic pills

Endoscopes using self-propulsion, e.g. capsule endoscopes

Devices for applying,{e.g. spreading}, media, e.g. remedies, on the human body (devices for handling toilet or cosmetic substances A45D ; absorbent pads, e.g. swabs, A61F 13/15);{Introducing media, e.g. remedies, into the body by diffusion through the skin (using salt baths A61H 33/04)}
Definition statement
This group covers:
  • Devices only for applying drugs onto the body.
  • Booths for spraying tanning lotions onto the body.
References relevant to classification in this group
This group does not cover:

Devices for handling toilet or cosmetic substances

Baths

Absorbent pads, e.g. swabs

Salt baths

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

Spraying apparatus

Coin operated apparatus for spraying fluids

Transdermal patches with drugs

Apparatus for tanning the skin

{Hand-held applicator instruments having media dispensing or spreading means (apparatus for iontophoresis A61N 1/30 ; hand tools for applying fluent material to surfaces, in general B05C 17/00 ; container closures with pads or like contents-applying means, in general B65D 47/42)}
Definition statement
This subgroup covers:

Handheld devices only for applying drugs onto the body.

References relevant to classification in this group
This subgroup does not cover:

Aapparatus for iontophoresis

Hand tools for applying fluent material to surfaces, in general

Container closures with pads or like contents-applying means, in general

Hand-held massage devices with liquid delivery

{Absorbent pads, e.g. swabs, containing a liquid, e.g. in a rupturable reservoir (absorbent pads, e.g. swabs, for medical use, in general A61F 13/00 , e.g. A61F 13/38)}
References relevant to classification in this group
This subgroup does not cover:

Absorbent pads, e.g. swabs, for medical use, in general

Other apparatus for introducing media into the body (for reproduction or fertilisation A61B 17/425 ; apparatus for iontophoresis or cataphoresis A61N 1/30); Percutany, i.e. introducing medicines into the body by diffusion through the skin (salt baths A61H 33/04)
Definition statement
This group covers:

Devices for introducing substances (mainly drugs) into the body through artificial openings, e.g. thanks to puncturing with needles, thanks to application of ultrasound

References relevant to classification in this group
This group does not cover:

Reproduction or fertilisation

Iontophoresis or cataphoresis

Salt baths

Syringes

Implantable pumps

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

Vaccination needles

Acupuncture

{having means for enhancing the permeation of substances through the epidermis, e.g. using suction or depression, electric or magnetic fields, sound waves or chemical agents}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Ultrasound, e.g. phonophorese

Iontophoresis or cataphoresis

{by using microneedles}
Relationship between large subject matter areas

Please propose the following classes as well:

Drug coated or drug delivering microneedles with specific drugs

{Methods for producing microneedles}
Relationship between large subject matter areas

Please propose the following classes as well (if applicable):

Shaping techniques

Manufacture or treatment of devices or systems in or on a substrate

{Devices for implanting pellets, e.g. markers or solid medicaments (for introducing of radioactive sources for interstitial radiation therapy, i.e. brachytherapy A61N 5/1027)}
Definition statement
This subgroup covers:

Solid implants, e.g. solid medicaments, marker, etc., and devices for implanting solid implants into the body invasively

References relevant to classification in this group
This subgroup does not cover:

Radioactive implants and devices which are used only for implantation of radioactive implants (special sizes, shapes, radiation protection, etc.)

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

Solid drug implants

Cannula for implanting or removing devices

{Tattooing apparatus (apparatus for marking animals A01K 11/00 ; vaccine applicators having needles or other puncturing means A61B 17/205)}
Definition statement
This subgroup covers:
  • Devices for applying permanent tattoos.
  • Devices for applying temporary tattoos.
  • Devices for applying temporary tattoos without using needles, e.g. adhesive tattoos.
References relevant to classification in this group
This subgroup does not cover:

Apparatus for marking animals

Vaccination needles

Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use (for respiratory devices, e.g. tracheal tubes A61M 16/00 ; artificial heart valves A61F 2/24)
Definition statement
This group covers:

Access sites (subcutaneous or transcutaneous), haemostasis valves, medical tubes and means for storage of said tubes, tube connectors, caps or plugs for tubes or connectors, valves and clamping means for medical tubes.

References relevant to classification in this subclass
This group does not cover:

Tracheal tubes (respiratory tubes)

Connecting needles to syringes

Connecting catheter tubes to hubs

Respiratory valves

Vascular valves

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

Locating means to allow access to septum

Peritoneal dialysis catheter

Tracheotomy devices

Measuring pressure within body

Colostomy devices

Gastrotomy feeding tubes

Cranial plugs

Resheathing means for used needles

Fistulas

Multi-channel connectors in general

Rotating or swivel joints in general

Quick-acting type connectors in general

Swivel nut connector (screw threaded joint) in general

Union screw connector (sealing surfaces pressed together by means of a member) in general

Connecting hose to rigid members in general

Method or apparatus for disinfecting or sterilizing

Regulating valves in infusion systems

Multiway valves in general

Starling valves in general

Tube strippers

Screw clamps in general

Lever clamps in general

Camp clamps in general

Wedge clamps in general

Tube cut-off devices by bending or twisting the tube in general

Special rules of classification within this subclass

The classification of "additional information" in the field is mandatory, but only if the additional information has some importance.

For example, the main invention is an access site (A61M 39/02), but a valve (A61M 39/22) is present in the device. If the valve is just a common check valve with no specific details, then it is not worth giving a class in the field of valves. On the contrary, if the check valve is well described and presents some interesting features, then the document should also be classified in the field of valves.

Further details of subgroups

This subgroup contains the access sites. They are divided in two main categories: the subcutaneous access sites (A61M 39/0208) that are implanted under the skin and are therefore invisible to the user; and the transcutaneous acces sites (A61M 39/0247) that actually go through the skin and that therefore have a part exposed to the outside. Historically the transcutaneous access sites were in an other field, they have been recently regrouped with the subcutaneous access sites. A61M 39/0208 still contains documents that would now belong in A61M 39/0247 but that were put in A61M 39/0208 at a time where A61M 39/0247 did not yet exist.

Haemostatis valves.

This subgroup regroups all kinds of medical connectors (except respiratory connectors that can be found in A61M 16/08). Some of the subdivisions of this subgroup mirror the way in which the general connectors are classified in F16L. Other subdivisions are more specific to the medical connectors.

This subgroup contains medical check valves that are mostly classified by the way in which the check valve works, i.e. what kind of element (hinged member, flexible disc, ball, stem etc.) is used inside the valve to get the desired "non-return effect". Again here, the subdivisions in this subgroup mirror the subdivisions of the group F16K 15/00 that contains general check valves.

This subgroup contains valve closing automatically on disconnecting the line and opening on reconnection. Part of the subdivisions deals with the way in which the fluid space inside the valve is affected by disconnection. It can be difficult to find that information in the document to be classified, therefore extra-care is required when classifying in this subgroup.

This subgroup contains medical clamps for squeezing flexible tubes. Again here, the subdivisions in this subgroup mirror the subdivisions of the group F16K 7/00 that contains general clamps.

Liquids
Special rules of classification within this group

These symbols are often used with the symbols A61M 2202/0007 - A61M 2202/092 in combination sets.

This page is owned by Office of Patent Classification.
Last Modified: 10/11/2013