LEIMBACH RICHARD L,SCHWEMBERGER RICHARD F,MEASAMER JOHN P,ALEXANDER JOHNNY H III,MILLER CHRISTOPHER C,DINARDO BRIAN F,RECTOR JASON M
申请号：
IN201617011151
公开号：
IN201617011151A
申请日:
2016.03.30
申请国别(地区):
IN
年份:
2016
代理人:
摘要：
A surgical circular stapler has a handle assembly a shaft a stapling assembly a motor a drive assembly and a firing assembly. The shaft extends distally from the handle assembly. 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 drive assembly to thereby translate the firing assembly. A resilient member biases the firing assembly proximally. Through cooperation between the firing assembly and the resilient member the firing assembly is driven distally and proximally to complete a firing stroke in response to rotation of the drive assembly through a single revolution. A cam assembly is coupled to the motor and to the firing assembly. The motor rotates the cam assembly to drive the firing assembly with a varying longitudinal force.
