System and method for electrosurgical tissue canalization
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United States of America Patent
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Nov 4, 1997
Grant Date -
N/A
app pub date -
Nov 22, 1995
filing date -
Jan 7, 1992
priority date (Note) -
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Abstract
A method for transmyocardial revascularization of the heart of a patient comprises introducing a probe (10) into the thoracic cavity through a percutaneous penetration, a thoracotomy or a sternotomy. An active electrode surface (58) is then positioned adjacent a wall of the patient's heart, e.g., the ventricular wall. Electrically conducting liquid (50) is directed to the heart wall to provide a current flow path and high frequency voltage is applied to ablate or disintegrate tissue at the heart wall. The probe is then axially translated towards the ventricular wall to form a revascularizing channel or artificial vessel from the ventricle to the myocardium to increase blood flow therethrough.
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