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Surgical stapler with firing lock mechanism

  • US 10,470,766 B2
  • Filed: 09/14/2012
  • Issued: 11/12/2019
  • Est. Priority Date: 05/19/2006
  • Status: Active Grant
First Claim
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1. A surgical stapler comprising:

  • a shaft extending along a longitudinal axis having a proximal end and a distal end, a first jaw and a second jaw extending from the distal end of the shaft, the second jaw arranged to receive a staple cartridge having a plurality of staples, and the first jaw defining an anvil surface and the first jaw and second jaw being actuatable between an open configuration and a closed configuration;

    an actuator coupled to the proximal end of the shaft, the actuator comprising a trigger pivotably coupled to a stationary handle housing;

    a staple pusher coupled to the actuator and movable along the longitudinal axis to push the plurality of staples out of the cartridge towards the anvil surface, wherein the trigger is configured to sequentially actuate the first jaw and the second jaw from the open configuration to the closed configuration in a closing stroke and move the staple pusher to push the plurality of staples out of the cartridge in a firing stroke;

    a lever pivotally coupled to the second jaw, the lever having a first end and a second end opposite the first end, and the lever pivotable between a first position in which the lever prevents approximation of the jaws and a second position in which the first and second jaws are actuatable from the open configuration to the closed configuration wherein the lever has a pin at the second end, wherein the second jaw comprises an aperture, and wherein the pin extends through the aperture with the lever in the first position; and

    a frame having a proximal end fixedly coupled to the actuator and a distal end opposite the proximal end, the frame having a slot formed therein at the distal end to receive the pin of the lever with the lever in the first position.

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