A cardiac valve annulus compressor comprises a generally cylindrical main body having plain and barbed ends and an actuator portion. Barbs disposed on the barbed end are engageable with the valve annulus. The length of the circumference of the barbed end is responsive to movement of the actuator portion....http://www.google.fr/patents/US20040260394?utm_source=gb-gplus-shareBrevet US20040260394 - Cardiac valve annulus compressor system
