Jaw closure arrangements for surgical instruments

  • US 8,978,956 B2
  • Filed: 09/30/2010
  • Issued: 03/17/2015
  • Est. Priority Date: 09/30/2010
  • Status: Active Grant
First Claim
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1. A surgical instrument comprising:

  • a handle assembly;

    a spine assembly operably coupled to said handle assembly and protruding therefrom to define a longitudinal axis;

    a closure tube assembly movably received on said spine assembly for selective axial travel thereon in a distal direction away from said handle assembly and in a proximal direction towards said handle assembly, said closure tube assembly comprising;

    a closure tube comprising an interior cam surface;

    a firing system operably supported by said handle assembly and interfacing with said closure tube assembly to selectively cause said closure tube assembly to move in said distal and proximal directions; and

    an end effector coupled to said spine assembly and having first and second jaw members movable relative to each other from an open position to closed positions, said first jaw member configured to support a staple cartridge therein, said first and second jaw members configured for actuatable engagement with said interior cam surface of said closure tube such that said first and second jaw members are each moved toward each other to said closed positions by non-rotating axial movement of said closure tube assembly in said proximal direction.

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