Electrosurgical instrument for tissue ablation, an apparatus, and a method for providing a lesion in damaged and diseased tissue from a mammal
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United States of America Patent
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Sep 14, 1999
Grant Date -
N/A
app pub date -
Sep 30, 1997
filing date -
Dec 13, 1994
priority date (Note) -
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Abstract
An electrosurgical instrument, an apparatus employing such instrument, and a method for using such instrument and apparatus for tissue ablation, are useful for forming lesions in tissue, whereby tumors, birth marks, or the like may be removed. The electrosurgical instrument has an elongated tubular element with a distal end and a proximal end, whereby a cooling fluid passage is provided within the tubular element for establishing fluid communication between the proximal end and the distal end. An electrical conductor, provided at the proximal end, supplies electrical energy to the distal end. The apparatus includes the electrosurgical instrument, a cooling fluid supply, a counter electrode, and an electrical energy source. In the method of using the instrument and the apparatus, the tubular element is inserted into the tissue, cooling fluid is supplied to the tubular element, and electrical energy is supplied to the tubular element.
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