Methods for tissue ablation using pulsed energy
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United States of America Patent
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Nov 4, 2008
Grant Date -
May 17, 2007
app pub date -
Jan 24, 2007
filing date -
May 10, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrosurgical probe comprises a shaft having an electrode array (12) at its distal end and a connector at its proximal end. The array (12) includes a plurality of isolated electrode terminals, and an electrosurgical power supply (28) is provided with a multiplicity of independently limited or controlled current sources and a connector. The electrosurgical probe and the power supply may be connected through their respective connectors so that the independent current sources are connected to individual electrode terminals. By applying very high frequency electrical energy to the electrode array, target tissue may be cut or ablated while heat dissipation through low impedance paths, such as blood and normal saline, will be minimized.
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