US 9,808,580 B2
Medicament delivery device
Gunnar Elmén, Huddinge (SE)
Assigned to SHL Group AB, Nacka Strand (SE)
Appl. No. 14/362,590
Filed by SHL Group AB, Nacka Strand (SE)
PCT Filed Nov. 28, 2012, PCT No. PCT/SE2012/051311
§ 371(c)(1), (2) Date Jun. 3, 2014,
PCT Pub. No. WO2013/085453, PCT Pub. Date Jun. 13, 2013.
Claims priority of provisional application 61/567,293, filed on Dec. 6, 2011.
Claims priority of application No. 1151163-1 (SE), filed on Dec. 6, 2011.
Prior Publication US 2014/0331996 A1, Nov. 13, 2014
Int. Cl. A61M 5/00 (2006.01); A61M 5/315 (2006.01); A61M 5/24 (2006.01); A61M 5/31 (2006.01); A61M 15/00 (2006.01)
CPC A61M 5/31536 (2013.01) [A61M 5/24 (2013.01); A61M 5/3146 (2013.01); A61M 5/31543 (2013.01); A61M 15/0001 (2014.02); A61M 2005/2407 (2013.01)] 14 Claims
OG exemplary drawing
 
14. A medicament delivery device, comprising:
a container housing arranged to receive and hold a medicament container having a plunger; and
a rear housing releasably connected to the container housing and comprising:
a plunger rod arranged to act on the plunger when the medicament container is received in the container housing;
a drive mechanism arranged to drive the plunger rod; and
a locking mechanism for locking the plunger rod, comprising:
a locking wheel;
a locking device movable between an active position, in which the locking device prevents rotation of the locking wheel, and an inactive position, in which the locking device allows rotation of the locking wheel, wherein the plunger rod extends through an opening in the locking wheel, and the plunger rod and the opening in the locking wheel are arranged to mate with each other such that axial movement of the plunger rod relative to the locking wheel is allowed while rotation of the plunger rod relative to the locking wheel is prevented; and
a resilient member arranged at the movable locking device and to act on the movable locking device to displace the movable locking device toward the inactive position, wherein the resilient member comprises a sheet metal spring.