SURGICAL STAPLER WITH ROTARY CAM DRIVE AND RETURN

摘要

A surgical circular stapler has a body, shaft, a stapling assembly, a motor, a cam assembly, and a firing assembly. The shaft extends distally from the body. The stapling assembly is secured to a distal end of the shaft. Longitudinal translation of the firing assembly causes the stapling assembly to drive a plurality of staples in a circular array to secure two lumens of tissue together. The stapling assembly may further drive a blade to sever any excess tissue interior of the circular array of staples. The motor is operable to rotate the cam assembly. Rotation of the cam assembly causes longitudinal translation of the firing assembly. A single rotation of the cam assembly is operable to drive the firing assembly from a proximal position to a distal position and back to a proximal position.

主权项

1. A surgical instrument comprising:
(a) a body; (b) a shaft extending distally from the body, wherein the shaft comprises a proximal end and a distal end; (c) a stapling assembly, wherein the stapling assembly is disposed at the distal end of the shaft, wherein the stapling assembly is configured to selectively move from an open position to a closed position, and wherein the stapling assembly is operable to drive a plurality of staples into tissue; (d) a motor; (e) a cam assembly coupled with the motor, wherein the motor is configured to rotate the cam assembly; and (f) a firing assembly coupled with the cam assembly, wherein the firing assembly is configured to longitudinally translate to thereby cause the stapling assembly to drive the plurality of staples, and wherein the cam assembly is rotatable to thereby longitudinally actuate the firing assembly.