Importance

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Abstract

A tissue ablation device assembly ablates a region of tissue of a body space wall of a patient. In a tissue ablation device assembly, an ablation member is disposed on the distal end portion of an elongated body. The ablation member includes an ablation element and at least one conductor coupled to the ablation element. A porous membrane covers the ablation element and defines an inner space between the ablation element and an inner surface of the porous membrane. A pressurizable fluid passageway extends between a fluid port on the proximal end portion of the elongated body and the inner space within the porous membrane. Fluid can pass from the fluid port, through the pressurizable fluid passageway, to the inner space. The porous membrane allows a volume of pressurized fluid to pass through the porous membrane to an exterior of the ablation member so as to irrigate the ablation element.

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First Claim