Closure lockout systems for surgical instruments

  • US 10,045,781 B2
  • Filed: 06/13/2014
  • Issued: 08/14/2018
  • Est. Priority Date: 06/13/2014
  • Status: Active Grant
First Claim
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1. A stapling instrument assembly, comprising:

  • a cartridge support portion comprising a pivot slot, wherein said pivot slot comprises a first portion defining a closure path and a second portion comprising a lock;

    a staple cartridge insertable into said cartridge support portion, wherein said staple cartridge comprises a plurality of staples stored therein and a sled, and wherein said sled is configured to eject said plurality of staples from said staple cartridge;

    an anvil movably mounted to said cartridge support portion, wherein said anvil comprises a staple forming portion configured to deform said staples, wherein said anvil is movable between an open position and a closed position, and wherein said anvil comprises a trunnion movably positioned in said pivot slot;

    a slidable member slidably positioned in said cartridge support portion, wherein said anvil is movable relative to said slidable member; and

    a biasing member configured to bias said trunnion into said lock to prevent said anvil from moving from said open position to said closed position when said staple cartridge is not positioned in said cartridge support portion, wherein said staple cartridge is configured to engage said slidable member, wherein said slidable member is configured to push said trunnion out of said lock into said first portion of said pivot slot when said staple cartridge is positioned in said cartridge support portion and permit said trunnion to move along said closure path as said anvil is moved from said open position to said closed position.

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