Combined electrosurgical-cryosurgical instrument
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United States of America Patent
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Apr 30, 2002
Issued Date -
N/A
app pub date -
Mar 15, 2000
filing date -
Mar 15, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention is directed towards a combined electrosurgical-cryosurgical instrument for tissue ablation. The instrument comprises a shaft having a proximal end and a distal end, the distal end being electrically and thermally conductive; a radiofrequency insulation sheath surrounding the outer surface of the shaft; a cryo-insulation sheath surrounding a surface of the shaft; a radiofrequency power supply source; a cryogen supply tube within the shaft; and a cryogen supply source connected to the cryogen supply tube. The power source provides electrical energy to the distal end of the shaft, and the cryogen supply tube provides a cryogen to the distal end of the shaft.
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