A medical device includes a shaft, an end effector at a distal end of the shaft, the end effector having a first jaw that pivots relative to a second jaw about a pivot axis, a control mechanism engaging a surface of the first jaw, such that when the control mechanism translates relative to the pivot axis from a first state to a second state, the surface of the first jaw moves relative to the control mechanism and pivot about the pivot axis. The medical device further includes an actuator extending through the shaft and coupled to the control mechanism, where translation of the actuator translates the control mechanism from the first state to the second state.

A surgical stapling device includes a tool assembly having an anvil, a cartridge assembly movable in relation to the anvil between open and clamped positions, a drive member, and a biasing mechanism or member. The biasing mechanism or member is configured to urge the cartridge assembly in relation to the anvil assembly to its fully open position to provide access to tissue during a surgical procedure.

A detachable motor-powered surgical instrument. The instrument may include a housing that includes at least one engagement member for removably attaching the housing to an actuator arrangement. A motor is supported within the housing for supplying actuation motions to various portions of a surgical end effector coupled to the housing. The housing may include a contact arrangement that is configured to permit power to be supplied to the motor only when the housing is operably attached to the actuator arrangement.

A surgical stapling apparatus is disclosed which comprises cartridge body and a layer. The layer is implantable against tissue by staples deployed from the cartridge body and deformed by an anvil. The cartridge and the layer comprise co-operating features which reduce relative movement between the cartridge and the layer. Such co-operating features can also releasably retain the layer to the cartridge body. In addition to or in lieu of the above, the anvil and the layer comprise co-operating features which reduce relative movement between the anvil and the layer. Such co-operating features can also releasably retain the layer to the anvil. In certain instances, the layer can be positioned against the anvil, but releasably attached to the cartridge. The layer can comprise buttress material and/or a tissue thickness compensator, for example.

A surgical instrument system is disclosed which comprises a distal end and a staple cartridge assembly comprising staples removably stored therein. The instrument system further comprises a firing drive including an electric motor and a firing member operably couplable with the electric motor. The electric motor is operable to advance the firing member toward the distal end during a staple firing stroke to eject the staples from the staple cartridge. The electric motor is operable to retract the firing member away from the distal end during a retraction stroke. The surgical instrument system further comprises a manually-operated bailout mechanism operable to perform the retraction stroke in lieu of the electric motor, a controller, and a display in communication with the controller. The controller is configured to display the progress of the retraction stroke when the firing member is being manually retracted by the bailout mechanism.

In one general aspect, various embodiments of the present invention can include a motorized surgical cutting and fastening instrument having a drive shaft, a motor selectively engageable with the drive shaft, and a manual return mechanism configured to operably disengage the motor from the drive shaft and retract the drive shaft. In at least one embodiment, a surgeon, or other operator of the surgical instrument, can utilize the manual return mechanism to retract the drive shaft after it has been advanced, especially when the motor, or a power source supplying the motor, has failed or is otherwise unable to provide a force sufficient to retract the drive shaft.

In one general aspect, various embodiments of the present invention can include a motorized surgical cutting and fastening instrument having a drive shaft, a motor selectively engageable with the drive shaft, and a manual return mechanism configured to operably disengage the motor from the drive shaft and retract the drive shaft. In at least one embodiment, a surgeon, or other operator of the surgical instrument, can utilize the manual return mechanism to retract the drive shaft after it has been advanced, especially when the motor, or a power source supplying the motor, has failed or is otherwise unable to provide a force sufficient to retract the drive shaft.

A motorized surgical instrument is disclosed. The surgical instrument includes a displacement member configured to translate within the surgical instrument, a motor coupled to the displacement member to translate the displacement member, a sensor configured to sense a thickness of a tissue grasped by an end effector, and a control circuit coupled to the motor and the sensor. The control circuit is configured to retrieve an expected thickness of the tissue, determine the thickness of the tissue via the sensor, and set a duty cycle for driving the motor. The duty cycle corresponds to the thickness of the tissue relative to the expected thickness of the tissue.

A surgical stapling attachment configured to clamp, staple, and cut tissue is disclosed. The surgical stapling attachment comprises an attachment portion, a shaft assembly, an articulation joint, and an end effector assembly. The end effector assembly comprises a firing system configured to cut tissue only after the tissue has been stapled.

A surgical stapling device includes a tool assembly having an anvil assembly, a cartridge assembly, and a lockout member supported on the anvil assembly. The lockout member is supported on the tool assembly to prevent firing of the stapling device when an actuation sled is not present in the cartridge assembly.