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Fluid-assisted electrosurgical scissors and methods

  • US 8,475,455 B2
  • Filed: 10/28/2003
  • Issued: 07/02/2013
  • Est. Priority Date: 10/29/2002
  • Status: Active Grant
First Claim
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1. A fluid-assisted electrosurgical scissors to treat tissue, the scissors comprising:

  • an end effector comprising a first blade member and a second blade member, the first blade member and the second blade member pivotally connected and arranged to cut tissue;

    at least one of the first blade member and the second blade member electrically coupled to an electrical connector connectable to a radio frequency power source;

    the first blade member comprising a first blade member shearing edge extending to a distal end of the first blade member and the second blade member comprising a second blade member shearing edge extending to a distal end of the second blade member;

    the first blade member comprising a first blade member distal portion and the second blade member comprising a second blade member distal portion, wherein at least one of the distal portions further comprises a bulbous portion protruding from a respective one of the first blade member or second blade member, the bulbous portion being bulbous relative to a remainder of the respective one of the first blade member or the second blade member, wherein the bulbous portion has an exposed electrically-conductive surface;

    a fluid passage in fluid communication with at least one fluid outlet, wherein the at least one fluid outlet is positioned to expel fluid to the end effector;

    a shaft having a first lumen, wherein the end effector is connected to the shaft; and

    a rod having a second lumen providing a portion of the fluid passage, wherein a portion of the rod is positioned in the first lumen.

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