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Surgical stapler using cartridge

  • US 4,296,881 A
  • Filed: 04/03/1980
  • Issued: 10/27/1981
  • Est. Priority Date: 04/03/1980
  • Status: Expired due to Term
First Claim
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1. A surgical stapling tool using disposable cartridge elements and having a staple folding anvil, an actuator movable toward and away from said anvil, a holder for an array of staples oriented toward said anvil, and a pusher for pushing said staples from said holder through tissue to be stapled and against said anvil, said tool comprising:

  • a. said movable actuator and said staple pusher being shaped relative to each other so said pusher mounts on said actuator in a retention fit and moves with said actuator toward said anvil;

    b. said holder being shaped for a retention fit on said pusher for movement with said pusher independently of said actuator and said anvil;

    c. said pusher being movable relative to said holder by force overcoming a predetermined frictional resistance between said pusher and said holder; and

    d. said actuator being movable through a distance sufficient to advance said pusher and said holder until said holder presses against and is stopped by tissue supported by said anvil and then continuing to advance said pusher into said holder to drive said staples through said tissue and against said anvil to staple said tissue.

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