US 12,478,740 B2
Injection device
Michael Jugl, Frankfurt am Main (DE); Maurice Toporek, Frankfurt am Main (DE); Stefan Blancke, Frankfurt am Main (DE); and Stephan Müller-Pathle, Frankfurt am Main (DE)
Assigned to Sanofi, Paris (FR)
Appl. No. 17/040,400
Filed by SANOFI, Paris (FR)
PCT Filed Mar. 25, 2019, PCT No. PCT/EP2019/057394
§ 371(c)(1), (2) Date Sep. 22, 2020,
PCT Pub. No. WO2019/185518, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 18305347 (EP), filed on Mar. 28, 2018.
Prior Publication US 2021/0113778 A1, Apr. 22, 2021
Int. Cl. A61M 5/315 (2006.01); A61M 5/20 (2006.01); A61M 5/31 (2006.01)
CPC A61M 5/31551 (2013.01) [A61M 5/2033 (2013.01); A61M 5/3157 (2013.01); A61M 5/31585 (2013.01); A61M 2005/3126 (2013.01); A61M 2205/3306 (2013.01); A61M 2205/3317 (2013.01); A61M 2205/3375 (2013.01); A61M 2205/581 (2013.01); A61M 2205/582 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An injection device comprising:
a housing with a receptacle for a medicament;
a dosing mechanism for setting a medicament dosage to be administered and for displaying the set medicament dosage;
a dispensing mechanism for dispensing the set medicament dosage, the dispensing mechanism comprising:
a piston rod moveable relative to the housing in a dispensing direction to eject the set medicament dosage in a dispensing stroke corresponding to the set medicament dosage;
at least one sleeve rotatable relative to the housing to eject the set medicament dosage; and
a button moveable relative to the housing and relative to the at least one sleeve in the dispensing direction from a dosing position into a dispensing position to eject the set medicament dosage;
a first detector for detecting a position of the button relative to the housing or the at least one sleeve;
a second detector for detecting rotational movement of the at least one sleeve or a component part of the injection device coupled to the at least one sleeve; and
a feedback generator mechanism connected to the first detector and the second detector, the feedback generator mechanism configured to;
generate a first feedback indicative of a start of dispensing upon (i) detection of the button being in the dispensing position by the first detector and (ii) detection of the rotational movement of the at least one sleeve relative to the housing by the second detector, and
generate a second feedback indicative of an end of dispensing upon (i) detection of the button being in the dosing position by the first detector and/or (ii) detection of a stop of the rotational movement of the at least one sleeve relative to the housing by the second detector,
wherein the first detector, the second detector, and the feedback generator mechanism are integrated together and built into the injection device, and further wherein the first detector, the second detector, and the feedback generator mechanism are encased within the housing.