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Surgical stapler apparatus

  • US 4,776,506 A
  • Filed: 11/13/1986
  • Issued: 10/11/1988
  • Est. Priority Date: 11/13/1986
  • Status: Expired due to Term
First Claim
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1. In a surgical stapler apparatus the combination comprisinga housing;

  • a shaft movably mounted in said housing for relative longitudinal movement therein;

    an anvil mounted on a distal end of said shaft;

    an annular stapler pusher projecting axially from a distal end of said housing towards said anvil;

    means for mounting an annular stapling cartridge on said housing in alignment with said pusher, said means including a sleeve slidably mounted on said housing for movement between an extended position and retracted position;

    means for moving said shaft into said housing and said anvil towards said knife; and

    cam means between said housing and said sleeve for securing said sleeve relative to said housing during proximal movement of said anvil to a predetermined point relative to said housing, said cam means being positioned relative to said sleeve for movement relative to said housing in response to continued proximal movement of said anvil from said point whereby said anvil pushes said annular means relative to said pusher to expel staples from a stapling cartridge thereon for stapling of tissue between said anvil and a cartridge on said housing.

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