×

Electrosurgical instrument for tissue ablation, an apparatus, and a method for providing a lesion in damaged and diseased tissue from a mammal

  • US 5,951,546 A
  • Filed: 09/30/1997
  • Issued: 09/14/1999
  • Est. Priority Date: 12/13/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. An electrosurgical instrument for tissue ablation, comprising:

  • an elongated rigid tubular element defining a distal end and a proximal end, said distal end being configured so as to allow said distal end to perforate and penetrate into tissue, said distal end being electrically and thermally conductive for establishing electric and thermal communication with said tissue;

    an electrical conductor connected to said tubular element so as to establish electrically conductive communication with said distal end of said tubular element, thereby to supply electrical energy to said distal end for the ablation of said tissue proximate said distal end; and

    a cooling fluid passage within said tubular element and establishing fluid communication from a cooling fluid input at said proximal end of said tubular element to said distal end for establishing heat conductive communication therewith, and from said distal end to a cooling fluid output at said proximal end, whereby the cooling fluid effects a cooling of the distal end that substantially prevents charring of said tissue during the ablation.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×