Zhang, Xiaoyu,Rapp, Brian,Karnafel, Paul,Cote, Dana
申请号：
AU2005295446
公开号：
AU2005295446B2
申请日:
2005.10.19
申请国别(地区):
AU
年份:
2012
代理人:
摘要：
[00128] A surgical knife safety device (10 or 100) having a handle (20 or 120),a blade (40 or 140) connected to the handle, and a guard (30 or 130) carried by thehandle for sliding movement between a retracted position in which the blade isexposed for use, and an extended position for covering the sharp cutting edgeof the blade. In the retracted position, an enlarged guard (30 or 130) radius isprovided at the distal end of the handle (20 or 120) to allow improved handle controland blade orientation. The enlarged guard radius is positioned to allow the userto firmly grip a large distal handle portion which is preferably molded as a singlepiece with the blade holder (26 or 126), preventing unwanted blade or handle movementdue to guard mechanism tolerances. A spring, such as leaf spring or a cantileverbeam (52 or 152), and a pair of detents (54, 56) or slots (154, 156) are providedto fix the guard (30 or 130) in the extended or retracted position and to provideresistance during movement between the two positions. Additionally, a pushbackprevention mechanism, a user operable lock and a drop-force operable lock areprovided to prevent accidental retraction of the guard from the fully extendedand guarded position.
