Yannick Hourmand,Timothy Donald Barrow-Williams,Matthew Ekman
申请号：
US13964435
公开号：
US20140135705A1
申请日:
2013.08.12
申请国别(地区):
US
年份:
2014
代理人:
摘要：
The invention relates to an auto-injector for administering a dose of a liquid medicament, comprising:an elongate housing, a syringe with needle and a stopper,a drive spring for pushing the needle from a covered position into an advanced position, for operating the syringe and for retracting the syringe,activating means for locking or releasing the spring means. A retraction sleeve is axially movable arranged in the housing. The drive spring bears with its proximal end against a thrust face of a decoupling member. At least one resilient decoupling arm is arranged at the decoupling member for bearing against a first shoulder of the plunger. At least one aperture is arranged in the retraction sleeve allowing the decoupling arms to be flexed outward thus allowing the first shoulder to slip past the decoupling arm. The aperture is arranged to be angularly misaligned with respect to the decoupling arm and to rotate so as to align with the decoupling arms upon translation of the retraction sleeve out of the proximal position in distal direction.
