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Pivoting multiple loop bipolar cutting device

  • US 5,192,280 A
  • Filed: 11/25/1991
  • Issued: 03/09/1993
  • Est. Priority Date: 11/25/1991
  • Status: Expired due to Fees
First Claim
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1. An electrosurgical cutting instrument connectable to a power source comprising:

  • (a) a generally tubular working element having a proximal end, a distal end and a lumen extending therebetween;

    (b) a head member comprised of an insulative material pivotally mounted at a pivot point to said distal end of said working element;

    (c) a pair of closely spaced bipolar electrodes extending outward from said head member and separated by a dielectric;

    (d) a pair of conducting wires, insulated from one another and each electrically connected at one end individually to one of said pair of bipolar electrodes, the other ends facilitating connection to said power source; and

    (e) pull-wire means extending through said working element and connected to said head member for pivoting said head member about said pivot point, said wire means being sufficiently rigid such that motioning said wire means towards and away from said proximal end of said working element creates rotation of said head member about said pivot point.

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