Mason, Brian Joseph,James, Adrian Benton,Silberschatz, Paul Joseph,Lister, Robert Ian
申请号：
AU2008226638
公开号：
AU2008226638B2
申请日:
2008.03.05
申请国别(地区):
AU
年份:
2013
代理人:
摘要：
A delay mechanism for staging the operation of an automatic injection apparatus(20) to ensure medication contents are properly delivered prior to the needledsyringe (32) of the apparatus being retracted. In one form, the delay mechanismincludes a shuttle (50), a follower (110), a locking member, a damping compound,and a driver and a driver biasing element (44). The shuttle is for a needled syringeof the apparatus and includes a first latching element. The follower includesa second latching element and a cammable surface, which second latching elementis for cooperating with the first latching element to limit motion of the shuttlerelative to the follower in a second direction opposite the first direction.The locking member is movable from a locking position to a release position byengagement with the syringe plunger during an injection, the locking member,when in the locking position, preventing rotation of the follower relative tothe shuttle, the locking member, when in the release position, allowing rotationof the follower relative to the shuttle. The damping compound is between the followerand a supporting surface to dampen rotation of the follower relative to the shuttle.The driver is rotatably fixed relative to the shuttle and includes a camming surface.The shuttle allowing retracting of the syringe needle into the housing of theautomatic injection apparatus after injection.
