a multi - leaflet heart valve composed of biocompatible polymer which , in all of its embodiments , simultaneously imitates the structure and dynamics of biological heart valves and avoids promotion of calcification . the valve includes a plurality of flexible leaflets dip cast on a mandrel , which leaflets are then bonded with a bonding agent to the interior surfaces of a plurality of struts on a metal - reinforced prosthetic stent . the leaflets open and close in response to the pumping action of the heart and , due to the design of the leaflets , fatigue resistance of the heart valve is high . the leaflets and the polymer components of the prosthetic stent are manufactured of biocompatible polymers exhibiting intrinsic calcification - resistant properties .