Devices and methods provide for ablation of cardiac tissue for treating cardiac arrhythmias such as atrial fibrillation. Although the devices and methods are often be used to ablate epicardial tissue in the vicinity of at least one pulmonary vein, various embodiments may be used to ablate other cardiac...http://www.google.ca/patents/US20090076501?utm_source=gb-gplus-sharePatent US20090076501 - CARDIAC TREATMENT DEVICES AND METHODS
