Modular surgical instruments

  • US 9,724,092 B2
  • Filed: 12/23/2013
  • Issued: 08/08/2017
  • Est. Priority Date: 12/23/2013
  • Status: Active Grant
First Claim
Patent Images

1. A surgical instrument, comprising:

  • an elongated shaft assembly defining a longitudinal tool axis, the elongated shaft assembly comprising;

    a proximal firing member operably interfacing with a firing system for receiving firing and retraction motions therefrom; and

    a proximal articulation assembly operably interfacing with an articulation system for receiving articulation motions therefrom wherein the surgical instrument further comprises;

    a surgical end effector comprising;

    first and second end effector portions wherein the first end effector portion comprises a carrier configured to operably support a surgical staple cartridge therein, and wherein the second end effector portion comprises an anvil assembly and is selectively movable relative to the first end effector portion in a first direction upon application of an opening motion to the second end effector portion, the second end effector portion being further selectively movable in a second direction upon application of a closing motion to the second end effector portion;

    an articulation joint configured to selectively articulate the first end effector portion about an articulation axis in the first and second directions relative to the longitudinal tool axis;

    an articulation link assembly operably interfacing with the articulation joint for applying the articulation motions to the articulation joint;

    a drive assembly supported for operable movement within the surgical end effector upon application of the firing and retraction motions thereto, the drive assembly configured to apply the opening and closing motions to the second end effector portion, wherein the drive assembly comprises a cutting head, comprising;

    a vertically extending portion including an upper end and a lower end and a tissue cutting portion oriented between the upper end and the lower end;

    a bottom foot protruding from the lower end of the vertically extending portion and configured to movably engage a bottom portion of the carrier;

    an upper tab portion protruding from the upper end of the vertically extending portion and configured to engage a portion of the anvil assembly; and

    a drive beam assembly operably coupled to the cutting head comprising;

    an upper firing bar segment coupled to the upper end of the vertically extending portion of the cutting head; and

    a lower firing bar segment coupled to the lower end of the vertically extending portion of the cutting head wherein the upper and lower firing bars are pivotally coupled to a proximal engagement member, and wherein the surgical instrument further comprises;

    means for simultaneously coupling;

    a proximal end of the first end effector portion to the elongated shaft assembly;

    the articulation link assembly to the proximal articulation assembly; and

    the drive assembly to the proximal firing member.

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