SANDERS, LAURIE,SMITH, PETER,BROWKA, EDWARD P.,NICHOLS, ELI B.
申请号：
CA3046935
公开号：
CA3046935A1
申请日:
2017.12.12
申请国别(地区):
CA
年份:
2018
代理人:
摘要：
A safety needle device is disclosed having a hub, needle cannula, housing, tether, retractable sleeve, locking member and spring element. The tether is movably disposed in the housing, the tether having a slot with an enlarged first guide path and a narrowed second guide path extending distally from the enlarged first guide path. The retractable sleeve is configured to move between an initial position, a retracted position and an extended position with respect to the housing, wherein the initial position partially exposes a distal tip of the needle cannula, the retracted position fully exposes the needle cannula, and the extended position fully covers the distal tip of the needle cannula. The proximal movement of one or more protrusions on the retractable sleeve, rotates the tether to move the at least one or more protrusions from the enlarged first guide path of the tether to the narrowed second guide path of the tether, this rotation activating the device.
