05681308 is referenced by 402 patents and cites 30 patents.

An endocardial ablation and mapping apparatus is introduced into a heart chamber for mapping to detect arrhythmogenic foci, and ablate endocardium at the arrhythmogenic foci. An inflatable, flexible porous membrane is adapted to receive an electrolytic solution, and become inflated to substantially conform a conductive surface of the membrane to the wall of the heart chamber. A membrane support is surrounded by the membrane, and includes a sealed proximal end and a sealed distal end. Each end has an aperture formed therein defining a central lumen in the membrane support that permits blood flow through the support member and the heart chamber. The membrane support is attached to the membrane and is expanded to a non-distensible state when the membrane is inflated. A catheter, with a distal end, is attached to the membrane or the membrane support. The membrane and membrane support are introduced into the heart chamber by the catheter in a non-expanded state, and become expanded to an expanded state by inflating the membrane with the electrolytic solution. A plurality of treatment electrodes, defining a circuit, are formed on an exterior surface of the membrane support. An RF power source is coupled to the treatment electrodes, and a source of electrolytic solution is coupled to the membrane.

Title
Ablation apparatus for cardiac chambers
Application Number
265459
Publication Number
5681308
Application Date
November 28, 1994
Publication Date
October 28, 1997
Inventor
Hugh R Sharkey
Redwood Shores
CA, US
Stuart D Edwards
1681 Austin Ave., Los Altos, 94024
CA, US
Agent
Fliesler Dubb Meyer & Lovejoy
Assignee
Stuart D Edwards
CA, US
IPC
A61B 17/39
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