A surgical stapling device includes an elongate member and a loading unit. The loading unit includes a tool portion and a body portion including a first portion having a first length, a second portion having a second length, and a third portion having a third length. The first portion is configured to be releasably secured with the elongate member. The second portion is distal of the first portion and dimensioned to be received in the elongate member. The third portion is distal of the second portion. At least the second or third portion is configured to engage the elongate member in a sealing relation. The second length is greater than the first and third lengths. The third portion of the body portion is dimensioned to be flush with the elongate member when the first and second portions are received in the elongate member.

A staple cartridge is disclosed. The staple cartridge can comprise a cartridge body comprising a deck and a bottom surface opposite the deck. The staple cartridge can comprise a plurality of staple cavities, wherein each staple cavity extends into the cartridge body from the deck to the bottom surface. Additionally, a plurality of wells can be defined into the staple cartridge from the deck to a lowermost surface of the well. A plurality of staples can be removably positioned in the staple cavities. The staple cartridge can comprise a tissue thickness compensator releasably secured to the cartridge body, wherein the tissue thickness compensator comprises a compensator body and a plurality of extensions extending from the compensator body into the wells, wherein at least one extension is compressed within one of the wells. Each well can surround at least one staple cavity and/or can extend between at least two staple cavities.

A method of operating a surgical stapling device comprising a lockout for preventing the surgical stapling device from operating. The method comprises contacting a first authentication key protruding from a surgical staple cartridge in actuation contact with the lockout in the surgical stapling device to move the lockout into an intermediate position, contacting a second authentication key protruding from the surgical stapling cartridge distal to the first authentication key into other actuation contact with the lockout in the surgical stapling device to move the lockout from the intermediate position into an unlocked position, and operating the surgical stapling device.

A surgical instrument including an end effector that has a selectively reciprocatable implement movably supported therein. The implement is selectively advanceable in a distal direction upon application of a rotary actuation motion thereto and retractable in a proximal direction upon application of a rotary retraction motion thereto. An elongate shaft assembly is coupled to the end effector and is configured to transmit the rotary actuation motion and rotary retraction motion to the reciprocatable implement from a robotic system that is configured to generate the rotary actuation motion and said rotary retraction motion.

A staple cartridge is disclosed. The staple cartridge can comprise a cartridge body comprising a deck and a bottom surface opposite the deck. The staple cartridge can comprise a plurality of staple cavities, wherein each staple cavity extends into the cartridge body from the deck to the bottom surface. Additionally, a plurality of wells can be defined into the staple cartridge from the deck to a lowermost surface of the well. A plurality of staples can be removably positioned in the staple cavities. The staple cartridge can comprise a tissue thickness compensator releasably secured to the cartridge body, wherein the tissue thickness compensator comprises a compensator body and a plurality of extensions extending from the compensator body into the wells, wherein at least one extension is compressed within one of the wells. Each well can surround at least one staple cavity and/or can extend between at least two staple cavities.

A surgical instrument including an end effector that has a selectively reciprocatable implement movably supported therein. The implement is selectively advanceable in a distal direction upon application of a rotary actuation motion thereto and retractable in a proximal direction upon application of a rotary retraction motion thereto. An elongate shaft assembly is coupled to the end effector and is configured to transmit the rotary actuation motion and rotary retraction motion to the reciprocatable implement from a robotic system that is configured to generate the rotary actuation motion and said rotary retraction motion.

A surgical stapler is described herein which includes a shaft portion and a tool assembly supported on a distal end of the shaft portion. The too assembly includes an anvil and a cartridge body which rotatably supports a plurality of staples within notches. At least one firing cam is provided to sequentially to engage and rotate each of the staples to fire the staples from the cartridge body. In embodiments, the cartridge body includes two spaced legs which support two linear rows of staples. Each of the spaced legs of the cartridge body is supported within one of a first and a second cartridge channel. The cartridge channels are fixed to opposite sides of a pivot member which is pivotally supported at a distal end of the shaft portion between the shaft portion and the tool assembly such that translation of the first and second cartridge channels in opposite directions effects articulation of the tool assembly in relation to the shaft portion.

A medical device includes an elongate member configured to be at least partially disposed within a body of a patient. The elongate member has an outer surface. The outer surface of the elongate member has a first ridge and a second ridge.

Disclosed is a surgical instrument for treating tissue in a surgical procedure. The surgical instrument comprises an end effector, comprising an anvil, and a staple cartridge. The surgical instrument further comprises a drive train operably coupled to the end effector, a motor configured to motivate the drive train based on a default control algorithm to affect a tissue treatment motion of the end effector, and a sensor configured to monitor an independent parameter of the surgical procedure. The independent parameter is independent of the motion of the end effector. The surgical instrument further comprises a control circuit coupled to the motor and the sensor. The control circuit is configured to receive an input from the sensor indicative of the independent parameter, and adjust the default control algorithm based on the independent parameter.

A surgical staple has two movable arms connected by a transverse connection area. Each one of the arms has a pinching area and a fastening end and the transverse connection area is deformable to allow the movable arms to be moved together by bending around the axis of the transverse connection area.