Patent ID: 11951292
Assignee: SANOFI-AVENTIS DEUTSCHLAND GMBH
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 9:
10. The auto-injector of claim 9, wherein the plunger release mechanism comprises:
one or more compliant beams with a respective first boss arranged on the syringe carrier, wherein a respective first opening is laterally arranged in the plunger for engaging the respective first boss of the one or more compliant beams,
a collar slidably arranged within the case and over the syringe carrier, wherein, when the needle shroud is in the extended position, the collar abuts the respective first boss of the one or more compliant beams, preventing it from disengaging the respective first opening, wherein, as the needle reaches its insertion depth, the collar moves axially away from the respective first boss of the one or more compliant beams, so that the respective first boss of the one or more compliant beams may deflect via the one or more compliant beams and disengage from the respective first opening and so that the syringe carrier is then disengaged from the plunger.