Surgical stapling instrument incorporating a multistroke firing position indicator and retraction mechanism
First Claim
1. A surgical instrument, comprising:
- an elongate implement portion responsive to a firing motion to perform a surgical procedure; and
a handle connected to the elongate implement portion, comprising;
a firing mechanism operably configured to produce full travel of the firing motion between an unfired position and a fully fired position, a firing trigger engageable to the firing mechanism during a plurality of firing strokes to move the firing mechanism during a plurality of firing strokes to from the unfired position toward the fully fired position, and an indicator member rotationally related to the firing mechanism to indicate the position of the firing mechanism during firing, the indicator moveable from the unfired to the fully fired position.
5 Assignments
0 Petitions
Accused Products
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.
-
Citations
20 Claims
-
1. A surgical instrument, comprising:
-
an elongate implement portion responsive to a firing motion to perform a surgical procedure; and
a handle connected to the elongate implement portion, comprising;
a firing mechanism operably configured to produce full travel of the firing motion between an unfired position and a fully fired position, a firing trigger engageable to the firing mechanism during a plurality of firing strokes to move the firing mechanism during a plurality of firing strokes to from the unfired position toward the fully fired position, and an indicator member rotationally related to the firing mechanism to indicate the position of the firing mechanism during firing, the indicator moveable from the unfired to the fully fired position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
10. A surgical instrument, comprising:
-
an elongate implement portion responsive to a firing motion to perform a surgical procedure;
a firing mechanism operably configured to produce full travel of the firing motion between an unfired position and a fully fired position, a firing trigger engageable to the firing mechanism during at least one firing stroke to move the firing mechanism from the unfired position toward the fully fired position, and an indicator member visible to an operator and related to the firing mechanism to indicate the position of the firing mechanism during firing. - View Dependent Claims (11, 12)
-
Specification