07490749 is referenced by 470 patents and cites 521 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. The instrument further has a manually actuatable retraction system that does not require the use of additional springs or other mechanisms to generate retraction forces which must be overcome when generating the forces necessary to fire the device. In various embodiments, the retraction system provides a visual indication to the surgeon as to how far firing has progressed.

Title
Surgical stapling and cutting instrument with manually retractable firing member
Application Number
11/729355
Publication Number
7490749 (B2)
Application Date
March 28, 2007
Publication Date
February 17, 2009
Inventor
Chad P Boudreaux
Cincinnati
OH, US
Christopher J Schall
Cincinnati
OH, US
Assignee
Ethicon Endo Surgery
OH, US
IPC
A61B 17/068
View Original Source