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.co.uk/patents/US20020017306?utm_source=gb-gplus-sharePatent US20020017306 - Surgical system and procedure for treatment of medically refractory atrial fibrillation