Elongated-member-driving apparatus – Surgical stapler – With means to prevent partial drive cycle
Reexamination Certificate
2005-11-01
2005-11-01
Smith, Scott A. (Department: 3721)
Elongated-member-driving apparatus
Surgical stapler
With means to prevent partial drive cycle
C227S175100, C227S175200, C227S019000
Reexamination Certificate
active
06959852
ABSTRACT:
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.
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Setser Michael Earl
Shelton, IV Frederick E.
Ethicon Endo-Surgery Inc.
Frost Brown Todd LLC
Smith Scott A.
Weeks Gloria R.
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