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Apparatus for radio frequency bipolar electrosurgery

  • US 5,451,224 A
  • Filed: 02/25/1993
  • Issued: 09/19/1995
  • Est. Priority Date: 02/27/1992
  • Status: Expired due to Fees
First Claim
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1. Apparatus for radio frequency (RF) bipolar electrosurgery comprising a radio frequency generator having first and second output terminals, and a cutting assembly which includes a support structure with at least two electrical supply conductors and, mounted at a distal end of the support structure, a tissue cutting head comprising an exposed length of electrically conducting material electrically connected between the two supply conductors, the material having a negative temperature coefficient (NTC) of resistance, and connection means for allowing RF electrical power to be fed from the output terminals of the generator to the supply conductors of the cutting assembly thereby to heat the cutting head and to permit tissue cutting by RF electrosurgical action.

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