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Surgical fastener applying apparatus

  • US 9,402,629 B2
  • Filed: 07/24/2013
  • Issued: 08/02/2016
  • Est. Priority Date: 10/13/2000
  • Status: Expired due to Term
First Claim
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1. A method of blocking a firing of a surgical fastener applying apparatus, the method comprising the steps of:

  • providing a surgical fastener applying apparatus, including;

    a cartridge half-section and an anvil half-section, the cartridge half-section and anvil half-section being relatively movable from an unclamped position to a clamped position;

    a loading unit receivable in the cartridge half-section and having a plurality of staples loaded therein and a plurality of staple pusher members;

    the cartridge half-section having;

    a frame; and

    a cam bar being longitudinally movable through the loading unit, wherein the cam bar includes a pair of camming surface extensions for interacting with the staple pusher members to fire the staples from the loading unit; and

    a lockout mechanism arranged to block advancement of the cam bar when the lockout mechanism is in a locked-out position, wherein the lockout mechanism includes a rocker pivotably mounted to the cartridge half-section, the rocker including a blocking surface and being biased toward a locked-out position, wherein the blocking surface of the rocker is engageable with the cam bar to prevent a longitudinal movement of the cam bar and the camming surface extensions thereof;

    loading the loading unit in the surgical fastener applying apparatus;

    subsequently clamping the cartridge and anvil half sections, wherein the rocker of the lockout mechanism is moved from the locked-out position preventing advancement of the cam bar to an unlocked position allowing an initial advancement of the cam bar.

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