Covidien LP

Fen Du

Shouwei Li

Yezhou Wu

Wei Zhang

Xiaowen Sun

Zhihua Zhang

Hui Zhan

Sridharan Varadhan

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 surgical kit includes a stapling device and a powered actuation assist detachably couplable to the stapling device. The stapling device includes an anvil half section, a cartridge receiving half section, and a firing assembly including an actuation knob movable along a length of the cartridge receiving half section. The powered actuation assist includes a motor assembly, a lead screw operatively coupled to the motor assembly, a knob connector coupled to the lead screw, a battery pack, and a first switch electrically coupled to the motor to activate the motor. The knob connector is configured to detachably engage the actuation knob of the stapling device to impart axial displacement to the actuation knob. Actuation of the motor assembly imparts rotation to the lead screw, which, in turn, causes axial displacement of the actuation knob of the firing assembly.

Powered actuation assist for an open linear stapling device

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 ().

Hand-held electromechanical surgical instruments

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Shanghai, China

Fen Du