07143926 is referenced by 551 patents and cites 19 patents.

A surgical stapling and severing instrument particularly suited to endoscopic procedures incorporates a handle that produces separate closing and firing motions to actuate an end effector. In particular, the handle produces multiple firing strokes in order to reduce the required amount of force required to fire (i.e., staple and sever) the end effector. A linked transmission reduces the required handle longitudinal length, yet achieves a rigid, strong configuration when straightened for firing. A traction biased firing mechanism avoids binding in driving this straightened linked rack in cooperation with an anti-backup mechanism, with a lockout mechanism that prevents releasing the closure trigger during firing. Furthermore, an external indicator gives feedback to the surgeon as to how far firing has progressed, as well as providing a manual retraction capability.

Title
Surgical stapling instrument incorporating a multi-stroke firing mechanism with return spring rotary manual retraction system
Application Number
11/52387
Publication Number
7143926 (B2)
Application Date
February 7, 2005
Publication Date
December 5, 2006
Inventor
Jeffrey S Swayze
Hamilton
OH, US
Michael Earl Setser
Burlington
KY, US
Douglas B Hoffman
Harrison
OH, US
Kevin Ross Doll
Mason
OH, US
Frederick E Shelton IV
Hillsboro
OH, US
Assignee
Ethicon Endo Surgery
OH, US
IPC
A61B 17/03
A61B 17/072
A61B 17/068
View Original Source