Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1996-12-05
1999-04-06
Buiz, Michael
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 34, A61M 3700
Patent
active
058910956
ABSTRACT:
A method is provided for applying electrical energy to a tissue structure within a patient's body. The method includes positioning an electrosurgical probe adjacent to the tissue structure so that an electrode array including a plurality of isolated electrode terminals is brought into at least partial contact with the body structure. A high frequency voltage is then applied between each electrode terminal within the electrode array and a common, return electrode. Current flow from the electrode terminals is selectively limited to minimize low electrical impedance paths emanating from the electrode array. The present invention takes advantage of the differences in electrical properties between a target tissue and the surrounding conductive liquid (e.g. isotonic saline irrigant) in the region immediately adjacent to the electrode array to ablate the target tissue while minimizing overheating of the surrounding liquid.
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Eggers Philip E.
Thapliyal Hira V.
ArthroCare Corporation
Buiz Michael
Mendez Manuel
Raffle John T.
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