The invention provides surgical systems and methods for ablating heart tissue within the interior and/or exterior of the heart. A plurality of probes is provided with each probe configured for introduction into the chest for engaging the heart. Each probe includes an elongated shaft having an elongated...http://www.google.de/patents/US8002771?utm_source=gb-gplus-sharePatent US8002771 - Surgical system and procedure for treatment of medically refractory atrial fibrillation