Cluster ablation electrode system
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United States of America Patent
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Mar 11, 2003
Grant Date -
Aug 15, 2002
app pub date -
Jan 27, 2000
filing date -
Dec 15, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multiplicity of high frequency electrodes in a cluster configuration may be inserted into tissue of a patient's body for producing heat ablation of abnormal tissue such as a tumor. The electrodes are connected coherently to the voltage output of a high frequency generator. An enlarged ablation volume is accomplished by the electrode cluster with reduced risk of hemorrhage because of the smaller diameter of the individual electrodes of the cluster. The electrodes terminate in conductive tips, which are cooled by a fluid coolant to further facilitate enlarged ablation volumes. Very large ablation volumes are accomplished by this process and apparatus. Various cluster electrode configurations may be adapted to meet specific clinical requirements.
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