A method for ablation in which a portion of atrial tissue around the pulmonary veins of the heart is ablated by a first elongated ablation component and a second elongated ablation component movable relative to the first ablation component and having means for magnetically attracting the first and second...http://www.google.fr/patents/US20070270799?utm_source=gb-gplus-shareBrevet US20070270799 - Method and apparatus for tissue ablation
