A tissue ablation device assembly ablates a region of tissue in a body of a patient. The tissue ablation device assembly comprises an elongated body having a proximal end portion and a distal end portion. A tubular porous membrane having a porous wall with an inner surface that defines an inner space...http://www.google.com/patents/US20090062787?utm_source=gb-gplus-sharePatent US20090062787 - IRRIGATED ABLATION DEVICE ASSEMBLY
