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Surgical instruments

  • US 4,429,695 A
  • Filed: 07/01/1982
  • Issued: 02/07/1984
  • Est. Priority Date: 02/05/1980
  • Status: Expired due to Term
First Claim
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1. In a surgical stapling instrument having first and second cooperating frames each provided with an elongate jaw, one of said jaws being adapted to receive at least two laterally spaced longitudinal rows of staples, an elongate pusher bar and knife assembly slidable longitudinally relative to said jaws for sequentially ejecting staples from said one of said jaws and shaping the staples against anvil means provided on the other of said jaws to form a pair of laterally spaced staple rows in tissue gripped between said jaws and for cutting the tissue along a line between said staple rows, said assembly including a pair of laterally spaced pusher bars each having a foward end portion including a pusher bar cam and a knife carrier having a knife blade located between said pusher bars, the improvement comprising jaw support means carried by said pusher bar and knife assembly and cooperating with said jaws for locally supporting both of said jaws in the region of said pusher bar cams as said cams move along said jaws for resisting forces tending to deflect said jaws during ejection and shaping of the individual staples.

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