US 11,813,437 B2
Sensor device for a drug delivery device
Thomas Klemm, Frankfurt am Main (DE); Dmitri Bogatirsky, Frankfurt am Main (DE); Mihaly Gabli, Frankfurt am Main (DE); and Stefan Bohling, Frankfurt am Main (DE)
Assigned to Sanofi-Aventis Deutschland GMBH, Frankfurt am Main (DE)
Filed by Sanofi-Aventis Deutschland GMBH, Frankfurt am Main (DE)
Filed on Feb. 22, 2021, as Appl. No. 17/181,588.
Application 17/181,588 is a continuation of application No. 15/748,042, granted, now 10,926,034, previously published as PCT/EP2016/067344, filed on Jul. 20, 2016.
Claims priority of application No. 15178750 (EP), filed on Jul. 29, 2015.
Prior Publication US 2021/0178075 A1, Jun. 17, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G01C 3/08 (2006.01); A61M 5/24 (2006.01); G01D 5/20 (2006.01); A61M 5/315 (2006.01); A61M 5/00 (2006.01)
CPC A61M 5/24 (2013.01) [A61M 5/31553 (2013.01); G01D 5/202 (2013.01); A61M 5/002 (2013.01); A61M 2205/502 (2013.01); A61M 2205/52 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A drug delivery system comprising:
a sensor device comprising:
an array of conducting elements each forming part of a respective resonant circuit and each operable to have a signal applied, wherein the array of conducting elements are arranged within the sensor device such that, when the sensor device is attached to the drug delivery device, the drug delivery device having a first movable element which is configured to move along a path parallel to a longitudinal axis of the drug delivery device and which supports thereon a conductive region, each resonant circuit is operable to output a signal indicative of the proximity of the conductive region supported on the first moveable element to the respective conducting element of each resonant circuit, and
circuitry configured to receive the signals output from each resonant circuit and, based on the received signals, to determine information associated with a location along the path of the first movable element; and
the drug delivery device having the first movable element which is configured to move along the path and a second movable element which is rotatable within the device,
wherein rotation of the second movable element and movement of the first movable element are interdependent, the second movable element comprising a code provided around a portion of an exterior of the second movable element, a part of the code being externally visible through a window or aperture formed in the drug delivery device, and
wherein the sensor device comprises a sensing arrangement overlying the window or aperture and configured to read the portion of the code that is externally visible through the window or aperture, the circuitry being configured to determine, based on the externally visible portion of the code and the position along the path of the first movable element, information relating to drug dose to which the drug delivery device is currently dialed.