US 11,857,708 B2
Device for attachment to an injection device
Michael Helmer, Frankfurt am Main (DE); and Christian Rehbein, Nieder-Olm (DE)
Assigned to Sanofi, Paris (FR)
Appl. No. 16/956,370
Filed by SANOFI, Paris (FR)
PCT Filed Dec. 17, 2018, PCT No. PCT/EP2018/085116
§ 371(c)(1), (2) Date Jun. 19, 2020,
PCT Pub. No. WO2019/121452, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. 17306845 (EP), filed on Dec. 20, 2017.
Prior Publication US 2021/0106761 A1, Apr. 15, 2021
Int. Cl. A61M 5/315 (2006.01); A61M 5/20 (2006.01); A61M 5/31 (2006.01)
CPC A61M 5/3155 (2013.01) [A61M 5/2033 (2013.01); A61M 2005/3126 (2013.01); A61M 2205/332 (2013.01); A61M 2205/3327 (2013.01); A61M 2205/3584 (2013.01); A61M 2205/52 (2013.01); A61M 2205/8206 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A supplementary device configured to be attached to a drug delivery device, the supplementary device comprising:
a carrier interface configured to mechanically couple the supplementary device to a dosage selector of the drug delivery device;
a dial knob configured to select a dosage to be delivered by the drug delivery device;
a mechanical coupling configured to transfer a torque from the dial knob to the carrier interface when a dosage selection is made with the dial knob;
a sensor configured to output signals indicative of the transferred torque; and
a processor configured to receive the signals output from the sensor and configured to determine the selected dosage based on the received signals.