October 14, 2011 – CardioFocus Inc., developer of the HeartLight endoscopic ablation system (EAS) for the treatment of atrial fibrillation (AF), announced that its HeartLight EAS was used to achieve successful acute pulmonary vein (PV) isolation and restore sinus rhythm in a persistent AF patient during a live case at the Venice Arrhythmias 2011 conference, Oct. 9-12 in Venice, Italy.