The methods, devices, and systems are provided for performing endovascular repair of atrioventricular and other cardiac valves in the heart. Regurgitation of an atrioventricular valve, particularly a mitral valve, can be repaired by modifying a tissue structure selected from the valve leaflets, the valve...http://www.google.ca/patents/US20080167714?utm_source=gb-gplus-sharePatent US20080167714 - METHODS AND APPARATUS FOR CARDIAC VALVE REPAIR