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Ultrasonic clamp coagulator apparatus having improved clamp arm tissue pad

  • US 6,068,647 A
  • Filed: 10/10/1997
  • Issued: 05/30/2000
  • Est. Priority Date: 10/10/1997
  • Status: Expired due to Term
First Claim
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1. An ultrasonic surgical clamp apparatus comprising:

  • a housing;

    an outer tubular sheath having a proximal end joined to said housing, and a distal end;

    an inner actuating member reciprocably positioned within said outer tubular sheath;

    an ultrasonic waveguide positioned within said outer tubular sheath and having an end-effector extending distally of said distal end of said outer tubular sheath;

    a clamp arm pivotally mounted on said distal end of said outer tubular sheath for pivotal movement with respect to said end-effector for clamping tissue between said clamp arm and said end-effector, said clamp arm being operatively connected to said actuating member so that reciprocal movement of said actuating member pivotally moves said clamp arm with respect to said end-effector;

    said clamp arm having a clamping surface positioned for cooperation with said end-effector, said clamp arm including a plurality of gripping teeth each extending continuously transversely thereof for cooperation with said end-effector to grip tissue between said clamp arm and said end-effector, said teeth collectively defining a cylindrical gripping surface, spaced from root portions of said teeth, for cutting tissue along a line and for compressing tissue along regions on opposite sides of said line.

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