US 12,390,598 B2
Supplementary device for an injection device
Michael Jugl, Frankfurt am Main (DE); Günther Sendatzki, Frankfurt am Main (DE); and Christian Rehbein, Frankfurt am Main (DE)
Assigned to Sanofi, Paris (FR)
Appl. No. 17/296,010
Filed by Sanofi, Paris (FR)
PCT Filed Nov. 14, 2019, PCT No. PCT/EP2019/081297
§ 371(c)(1), (2) Date May 21, 2021,
PCT Pub. No. WO2020/104285, PCT Pub. Date May 28, 2020.
Claims priority of application No. 18306560 (EP), filed on Nov. 23, 2018.
Prior Publication US 2022/0016352 A1, Jan. 20, 2022
Int. Cl. A61M 5/315 (2006.01); A61M 5/31 (2006.01)
CPC A61M 5/31551 (2013.01) [A61M 5/3155 (2013.01); A61M 5/31568 (2013.01); A61M 2005/3126 (2013.01); A61M 5/31593 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A supplementary device for an injection device, the injection device comprising a control dial that is rotatably mounted about an axis at a proximal end of the injection device, wherein the supplementary device comprises:
a sleeve adapted to be positioned over the control dial when the supplementary device is attached to the injection device; and,
an axial attachment member disposed within the sleeve and arranged such that insertion of the control dial into the sleeve moves the axial attachment member from an initial position that permits axial movement of the control dial into the sleeve, into an engagement position in which the axial attachment member engages the control dial to attach the supplementary device to the control dial,
wherein the axial attachment member comprises a clamp having a base ring and a plurality of arms extending distally from the base ring;
wherein in the initial position the control dial can move between the arms;
wherein in the engagement position the arms are pressed against said control dial for axial attachment of the supplementary device to the injection device; and
wherein the arms abut an inner circumferential surface of the sleeve such that an axial movement of the clamp within and relative to the sleeve moves the arms radially inward towards a longitudinal axis from the initial position to the engagement position.