Covidien LP

Yezhou Wu

Shouwei Li

Fen Du

Wei Zhang

Xiaowen Sun

Zhihua Zhang

A surgical stapling device includes a staple reload and a handle assembly that supports a drive rack, a motor assembly, a gear assembly, a reload select mechanism, and a safety toggle mechanism. The gear assembly is adapted to facilitate uncoupling of the motor assembly from the drive rack to allow manual movement of the drive rack. The reload select mechanism allows the length of a stroke of the drive rack to be selectively adjusted to allow the stapling device to accommodate different length staple reloads. The safety toggle mechanism is provided to move the stapling device from a non-firing state to a firing state to allow for firing of the stapling device.

Surgical stapling device with powered handle assembly

A handle assembly () of a hand-held surgical instrument () includes a handle housing (), a motor (), and a dual thread lead screw () operably coupled to the motor () and configured to move proximally and/or distally in response to an actuation of the motor (). A first thread pitch of the lead screw () is suitable for effecting a closing of jaw members () of an end effector (), and a second thread pitch of the lead screw () is suitable for effecting a stapling function of the end effector ().

Growing community of inventors

Shanghai, China

Yezhou Wu