Surgery – Instruments – Electrical application
Patent
1996-04-12
2000-06-06
Cohen, Lee S.
Surgery
Instruments
Electrical application
606 41, 607 99, 607105, 607113, 607122, A61B 1739
Patent
active
060712783
ABSTRACT:
Systems and methods for heating or ablating tissue use a porous electrode. The porous electrode comprises a wall having an interior area that contains an electrically conductive element. At least a portion of the wall comprises a porous material sized to block passage of blood cells while passing ions. The systems and methods position the porous electrode in contact with tissue. The systems and methods couple the electrically conductive element to a source of electrical energy. The systems and methods convey a fluid medium containing ions into the interior area to enable ionic transfer of electrical energy from the electrical conducting element through the fluid medium and porous material to ablate tissue. The systems and methods also specify differing electrical resistivities for the porous material based, at least in part, upon achieving differing desired tissue heating or ablation effects.
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Owens Patrick M.
Panescu Dorin
Swanson David K.
Thompson Russell B.
Whayne James G.
Cohen Lee S.
EP Technologies, Inc.
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