US 12,011,576 B2
Autoinjector
Thomas Kemp, Ashwell (GB)
Assigned to Sanofi-Aventis Deutschland GMBH, Frankfurt am Main (DE)
Filed by Sanofi-Aventis Deutschland GMBH, Frankfurt am Main (DE)
Filed on Aug. 2, 2021, as Appl. No. 17/391,104.
Application 17/391,104 is a continuation of application No. 16/355,691, filed on Mar. 15, 2019, granted, now 11,077,257.
Application 16/355,691 is a continuation of application No. 14/903,383, granted, now 10,232,125, issued on Mar. 19, 2019, previously published as PCT/EP2014/064422, filed on Jul. 7, 2014.
Claims priority of application No. 13175659 (EP), filed on Jul. 9, 2013.
Prior Publication US 2022/0008661 A1, Jan. 13, 2022
Int. Cl. A61M 5/32 (2006.01); A61M 5/20 (2006.01); A61M 5/50 (2006.01)
CPC A61M 5/3204 (2013.01) [A61M 5/2033 (2013.01); A61M 2005/206 (2013.01); A61M 2005/208 (2013.01); A61M 2005/3247 (2013.01); A61M 5/326 (2013.01); A61M 5/5086 (2013.01); A61M 2205/581 (2013.01); A61M 2205/582 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A drug delivery device comprising:
a case configured to hold a medicament container;
a plunger movable from a first axial position in a distal direction to a second axial position relative to the case, the plunger comprising an opening arranged in a radial outer surface of the plunger;
a plunger release mechanism comprising a compliant beam having a first boss configured to selectively engage the opening of the plunger;
a drive energy storage operatively coupled to the plunger, the drive energy storage being arranged to drive the plunger towards the second axial position in the distal direction;
a needle shroud, the needle shroud being movable relative to the case from a first, extended position to a second, retracted position, the needle shroud comprising a shroud surface; and
a collar comprising a shroud boss configured to engage the shroud surface of the needle shroud, the collar being arranged such that the collar is axially movable relative to the case in response to movement of the needle shroud from the first, extended position to the second, retracted position,
wherein the plunger release mechanism is configured to engage with the opening of the plunger in the first, extended position of the needle shroud and to disengage from the opening of the plunger in the second, retracted position of the needle shroud,
wherein in the second axial position of the plunger, a portion of the plunger is arranged within the medicament container.