Interchangeable shaft assemblies for use with a surgical instrument

  • US 9,883,860 B2
  • Filed: 03/14/2013
  • Issued: 02/06/2018
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. An interchangeable shaft assembly for use with a surgical instrument, the surgical instrument including a frame that defines an actuation axis and operably supports a plurality of drive systems, the shaft assembly comprising:

  • a shaft frame;

    a shaft attachment module on a proximal end of the shaft frame and configured to be releasably coupled to a portion of the frame in a direction that is transverse to the actuation axis;

    an end effector operably coupled to a distal end of the shaft frame, the end effector comprising;

    a surgical staple cartridge; and

    an anvil movably supported relative to the surgical staple cartridge, wherein the interchangeable shaft assembly further comprises;

    an outer shaft assembly including a distal end configured to apply control motions to the anvil, the outer shaft assembly including a proximal end configured to be operably, releasably, and directly coupled to and decoupled from an output drive of a first one of the drive systems supported by the frame in a direction that is transverse to the actuation axis, and wherein, when coupled, the outer shaft assembly and the output drive of the first drive system share a common drive axis; and

    a firing shaft assembly including a distal cutting portion configured to move between a starting position and an ending position within the end effector, the firing shaft assembly including a proximal end that is configured to be operably, releasably, and directly coupled to and decoupled from an output drive of a firing drive system supported by the frame in the direction that is transverse to the actuation axis, and wherein, when coupled, the firing shaft assembly and the output drive of the firing drive system share a common drive axis,wherein said firing drive system comprises a motor, andwherein said outer shaft assembly further comprises an articulation joint, and wherein a distal portion of said articulation joint is coupled to said end effector to facilitate articulation of the end effector relative to a proximal portion of said articulation joint in response to articulation motions applied thereto.

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