David FABIEN,Thomas GOMEZ,Anthony SAUSSAYE,Olivier HIS
申请号：
US15578341
公开号：
US20180154084A1
申请日:
2016.06.02
申请国别(地区):
US
年份:
2018
代理人:
摘要：
An autoinjector comprising:a body (1) receiving a reservoir (S), said reservoir (S) containing fluid and including a piston (P), such as a pre-filled syringe；a piston rod (5) that is adapted to co-operate with the piston (P) of said reservoir (S), said piston rod (5) being movable by an injection spring (8) between a primed position and an injection position in which said piston rod (5) has moved the piston (P) of the reservoir (S) so as to inject the fluid into an injection site； anda visual, audible, and/or tactile indicator device for indicating to the user that said autoinjector may be removed from said injection site；said autoinjector including a retarding system for delaying the actuation of said visual, audible and/or tactile indicator device relative to the end of injection, said retarding system including a dashpot (16) containing a fluid, a piston (19) being arranged in said dashpot (16), one of said dashpot (16) and of said piston (19) being movable in translation in said body (1) during actuation of said retarding system, and the other of said dashpot (16) and of said piston (19) being stationary relative to said body (1) during actuation of said retarding system, the movement in translation of one relative to the other moving said fluid out from said dashpot (16) through at least one flow passage (161； 195), such that said movement in translation is braked, said retarding system comprising said dashpot (16) containing said fluid, said piston (19), a locking key (20), said injection spring (8), a pusher element (17), a support member (6) interposed between said pusher element (17) and said injection spring (8), and said piston rod (5).
