Surgical stapling instrument incorporating a multistroke firing mechanism having a rotary slip-clutch transmission
First Claim
Patent Images
1. A surgical instrument, comprising:
- an end effector operably configured to respond to a firing motion;
a shaft attached to the end effector and including an elongate firing member coupled to the end effector for movement to longitudinally transmit the firing motion; and
a handle proximally attached to the shaft, comprising;
a firing actuator repeatably moveable in a firing direction and a return direction;
a rotary transmission, comprising;
an input rotary member coupled to the firing actuator for rotation in correspondence to the firing and return direction motions thereof, an output rotary member engaged to the elongate firing member for rotation in correspondence to longitudinal motion thereof, and a one-way clutch selectively communicating firing rotation of the input rotary member to the output rotary member.
4 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.
-
Citations
17 Claims
-
1. A surgical instrument, comprising:
-
an end effector operably configured to respond to a firing motion;
a shaft attached to the end effector and including an elongate firing member coupled to the end effector for movement to longitudinally transmit the firing motion; and
a handle proximally attached to the shaft, comprising;
a firing actuator repeatably moveable in a firing direction and a return direction;
a rotary transmission, comprising;
an input rotary member coupled to the firing actuator for rotation in correspondence to the firing and return direction motions thereof, an output rotary member engaged to the elongate firing member for rotation in correspondence to longitudinal motion thereof, and a one-way clutch selectively communicating firing rotation of the input rotary member to the output rotary member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A surgical instrument comprising;
-
a handle;
a staple applying assembly distal from the handle and comprising;
a plurality of staples, and an anvil having a staple forming surface, the staple forming surface moveable from an open position spaced away from the plurality of staples to a closed position adjacent to the plurality of staples; and
a staple applying mechanism operably coupled to the staple applying assembly, comprising;
a firing actuator repeatably moveable in a firing direction and a return direction, a rotary transmission, comprising an input rotary member coupled to the firing actuator for rotation in correspondence to the firing and return direction motions thereof, an output rotary member engaged to the elongate firing member for rotation in correspondence to longitudinal motion thereof, and a one-way clutch selectively communicating firing rotation of the input rotary member to the output rotary member.
-
-
15. A surgical instrument, comprising:
-
an end effector operably configured to respond to a firing motion;
a shaft attached to the end effector and including an elongate firing member coupled to the end effector for movement to longitudinally transmit the firing motion; and
a handle proximally attached to the shaft, comprising;
a firing actuator repeatably and pivotally moveable in a firing direction and a return direction, a rotary transmission means responsive to the arcing movement of the firing actuator to selectively couple an intermittent rotation in one direction into the elongate firing member. - View Dependent Claims (16, 17)
-
Specification