04955959 is referenced by 508 patents and cites 10 patents.

An improved surgical stapling apparatus containing a locking mechanism to prevent reactuation of the apparatus, the locking mechanism comprising a resilient clip having a hook which is engagable with a locking notch on the cam bar retainer. The resilient clip is initially held in a non-engagable position by means of a movable chock. When the stapler is actuated for the first time, the cam bar retainer pushes the chock into a subsequent position where the chock no longer blocks the resilient clip. The resilient clip then moves to a position where the hook is engagable with the locking notch. Once the cam bar retainer is retracted it can no longer be reactuated.

Title
Locking mechanism for a surgical fastening apparatus
Application Number
7/358421
Publication Number
4955959
Application Date
May 26, 1989
Publication Date
September 11, 1990
Inventor
Dominic F Presty
Shelton
CT, US
Thomas M Tompkins
Trumbull
CT, US
Agent
Rocco S Barrese
Peter G Dilworth
Thomas R Bremer
Assignee
United States Surgical Corporation
CT, US
IPC
A61B 17/00
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