Surgical stapling system comprising an unclamping lockout

  • US 10,456,140 B2
  • Filed: 04/01/2016
  • Issued: 10/29/2019
  • Est. Priority Date: 04/01/2016
  • Status: Active Grant
First Claim
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1. A stapling assembly for stapling tissue, comprising:

  • a staple cartridge, comprising;

    an annular cartridge body;

    staple cavities arranged in annular rows in said cartridge body; and

    staples removably stored in said staple cavities;

    an anvil configured to deform said staples;

    a closure drive configured to move said anvil from an open position to a closed position during a closure stroke to compress the tissue against said cartridge body, wherein said closure drive is configured to move said anvil from said closed position to said open position during an opening stroke;

    a firing member configured to eject said staples from said staple cavities during a firing stroke, wherein said firing stroke is performed after said closure stroke of said closure drive, wherein said firing member is retracted during a retraction stroke, and wherein said retraction stroke is performed after said firing stroke of said firing member; and

    a lockout configured to lock said closure drive and prevent said closure drive from performing said opening stroke before said retraction stroke of said firing member is completed.

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