US 12,070,589 B2
Autoinjector
Stefan Taal, London (GB); and 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 Jun. 24, 2022, as Appl. No. 17/849,222.
Application 17/849,222 is a continuation of application No. 17/029,514, filed on Sep. 23, 2020, granted, now 11,369,750.
Application 17/029,514 is a continuation of application No. 16/157,163, filed on Oct. 11, 2018, granted, now 10,814,074, issued on Oct. 27, 2020.
Application 16/157,163 is a continuation of application No. 14/903,363, granted, now 10,137,256, issued on Nov. 27, 2018, previously published as PCT/EP2014/064426, filed on Jul. 7, 2014.
Claims priority of application No. 13175663 (EP), filed on Jul. 9, 2013.
Prior Publication US 2022/0313926 A1, Oct. 6, 2022
Int. Cl. A61M 5/32 (2006.01); A61M 5/20 (2006.01); A61M 5/50 (2006.01)
CPC A61M 5/3257 (2013.01) [A61M 5/2033 (2013.01); A61M 2005/2013 (2013.01); A61M 5/3204 (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); A61M 2205/583 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An autoinjector, comprising:
a case adapted to hold a medicament container having a needle;
a plunger having at least one radial plunger opening;
a drive spring arranged to drive the plunger, when the plunger is released, in a distal direction relative to the case;
a needle shroud telescopically coupled to the case and movable between an initial position relative to the case in which the needle is covered by the needle shroud and a retracted position relative to the case in which the needle is exposed; and
a plunger release mechanism arranged to prevent release of the plunger when the needle shroud is in the initial position,
wherein the plunger release mechanism comprises at least one case boss,
wherein the at least one case boss is radially movable and engages the at least one radial plunger opening to prevent release of the plunger when the needle shroud is in the initial position,
wherein, for releasing the plunger, the needle shroud is movable towards the retracted position to enable that the at least one case boss disengages the at least one radial plunger opening by removing a radial support from the at least one case boss, and
wherein the radial support is removed from the at least one case boss by axially displacing the radial support away from the at least one case boss when the needle shroud is moved towards the retracted position.