Surgical instrument with progressive rotary drive systems

  • US 10,390,825 B2
  • Filed: 03/31/2015
  • Issued: 08/27/2019
  • Est. Priority Date: 03/31/2015
  • Status: Active Grant
First Claim
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1. A surgical instrument, comprising:

  • a rotary input shaft;

    means for selectively applying rotary input motions to said rotary input shaft;

    a surgical end effector, comprising;

    a first jaw;

    a second jaw selectively movable relative to said first jaw between an open and closed position;

    a firing shaft operably interfacing with said rotary input shaft such that said firing shaft rotates in response to rotation of said rotary input shaft;

    a firing member movably supported in one of said first and second jaws between an engaged and disengaged position with said firing shaft such that when said firing member is in said engaged position, said firing member is selectively axially movable between start and end positions in response to rotation of said firing shaft; and

    a closure member in driving engagement with said rotary input shaft such that rotation of said rotary input shaft in a first direction causes said closure member to move said second jaw to said closed position, said closure member remaining in driving engagement with said rotary input shaft to retain said second jaw in said closed position while continued rotation of said rotary input shaft in said first direction causes said closure member to continue to move distally to cause said firing member to move from said disengaged position to said engaged position such that further rotation of said firing shaft drives said firing member from said start position to said end position.

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