A catheter for radio frequency ablation with a cooled electrode for use in tissue having a surface comprising an elongate member having proximal and distal extremities. A metal conducting electrode secured to the distal extremity of the elongate member and having a chamber therein. A conductor extends...http://www.google.fr/patents/US5423811?utm_source=gb-gplus-shareBrevet US5423811 - Method for RF ablation using cooled electrode
