Covidien LP

Andriy Buyda

David M Chowaniec

Xingrui Chen

Saumya Banerjee

Brian J Creston

Thomas Wingardner

Drew R Seils

Asa G DeBlois

Jennifer Mccabe

A surgical instrument includes a housing, an elongated portion, and a loading unit. The elongated portion extends distally from the housing, defines a longitudinal axis, and includes an electrical contact. The loading unit is configured to releasably engage the elongated portion. The loading unit includes an electronic component, a proximal portion including an electrical contact in electrical communication with the electronic component, and an end effector coupled to the proximal portion and configured to manipulate tissue. Engagement between the elongated portion and the loading unit causes the electrical contact of the elongated portion to engage the electrical contact of the loading unit thereby electrically connecting the elongated portion and the loading unit.

Surgical instrument with electrical connection

A powered handle assembly includes a motor assembly, a rack, a shaft, and a pinion that couples the motor assembly to the rack. The shaft supports the pinion and is movable to move the pinion from a first position engaged with the rack to a second position disengaged from the rack to facilitate manual retraction of the rack.

Powered stapling device with rack release

An adapter assembly includes an elongate body configured to receive a surgical loading unit and an elongate loading bar coupled to the elongate body and configured to selectively lock the surgical loading unit to the adapter assembly. The elongate loading bar has a distal end defining a slot therein configured for receipt of an articulation link of the surgical loading unit upon an improper insertion of the surgical loading unit into the adapter assembly. With the articulation captured in the slot, rotation of the surgical loading unit toward a fully assembled state with the adapter assembly is resisted.

Adapter assemblies and surgical loading units

A surgical stapler includes a loading unit having a staple cartridge having a cartridge distance and a plurality of staples and an anvil to form the plurality of staples upon firing. The surgical stapler also includes a shaft assembly coupled to the load unit. The shaft assembly includes a drive shaft longitudinally movable within the shaft assembly and configured to actuate the loading unit. The surgical stapler further includes a handle assembly having a power source and a motor coupled to the power source and configured to move the drive shaft longitudinally. The handle assembly also includes a distance setting interface including a plurality of switches each of which corresponds to a travel distance that the motor moves the drive shaft, the travel distance corresponding to the cartridge distance.

Low-cost powered stapler with end stop selection

A surgical instrument including a housing, an elongated portion, and a loading unit is disclosed. The elongated portion extends distally from the housing, defines a longitudinal axis, and includes an electrical contact. The loading unit is configured to releasably engage the elongated portion. The loading unit includes an electronic component, a proximal portion including an electrical contact in electrical communication with the electronic component, and an end effector coupled to the proximal portion and configured to manipulate tissue. Engagement between the elongated portion and the loading unit causes the electrical contact of the elongated portion to engage the electrical contact of the loading unit thereby electrically connecting the elongated portion and the loading unit.

A surgical stapling device includes a tool assembly and a handle assembly. The tool assembly includes first and second jaw members. The handle assembly includes a rack and a retraction assembly. The rack is operatively coupled to the tool assembly and slidably supported in the handle assembly. The rack includes teeth extending along a length of the rack. The retraction assembly includes a shaft, a lever including a wheel and a lever handle extending from the wheel, and a pawl pivotably secured to the wheel. The lever is secured to the shaft for concomitant rotation therewith. The shaft is transitionable between a disengage state, in which, the pawl is disengaged from the teeth of the rack, and an engaged state, in which, the pawl engages the teeth of the rack such that when the lever handle is rotate about the shaft, the rack is retracted.

Growing community of inventors

East Haven, CT, United States of America

Andriy Buyda