A method for regulating the heart rate of a patient comprises inserting into a blood vessel of the patient a catheter having an electrode assembly at its distal end. The electrode assembly comprises a generally circular main region that is generally transverse to the axis of the catheter and on which...http://www.google.de/patents/US20020120304?utm_source=gb-gplus-sharePatent US20020120304 - Method and system for treatment of tachycardia and fibrillation
