Paul Joseph Silberschatz;Matthew Robert Adams;Jesse Arnold Fourt;Jonathan I. Kaplan;James R. Yurchenco
发明人:
Matthew Robert Adams,Jesse Arnold Fourt,Jonathan I. Kaplan,Paul Joseph Silberschatz,James R. Yurchenco
申请号：
US13581057
公开号：
US08734394B2
申请日:
2011.02.24
申请国别(地区):
US
年份:
2014
代理人:
摘要：
An automatic injection apparatus including a delay mechanism for properly delivering medication prior to the needled syringe of the apparatus being retracted. In one form, the delay mechanism includes a shuttle (170) for the syringe, a follower (250), a locking member, a damping compound between the follower and a supporting surface (308) to dampen rotation of the follower relative to the shuttle, and a dual functioning biasing member (290) acting between the shuttle and the follower. When the locking member moves to a release position during an injection, the dual functioning biasing member first provides a torsional force to force the follower to rotate relative to the shuttle from a latching position to an unlatching position, and then the dual functioning biasing member provides an axial force to force the shuttle axially relative to the follower to move the shuttle for retracting the syringe needle into the housing of the apparatus after injection.
