Geometric Modeling of Aortic Heart Valve

Heart valve dysfunction is a significant cause of morbidity and mortality around the world. Sustainability of the artificial heart valves such as either mechanical or biological (homo-graft, xeno-graft) is not proved yet. Requirement for anti-coagulation medication and calcification within a short time are the major defects of artificial valves which may lead to re-replacement of the valve. Whereas, the bio prosthetic valves are not currently useful in clinical application, so, the valve sparing surgery with shorter convalescence and economical aspect can be the best alternative for valvular disease treatment. This research attempts to model the geometric dimension of aortic heart valve through a complex calculation. The objective of this research is to define the parameters such as angle between leaflets and valve base (resp. leaflet and wall of the valve) in close (resp. open) position of the valve and also the angle of leaflet free-edge in open position which are hardly measurable in reality. These parameters can be used for calculating the required dimensions of the valves’ leaflet according to the other dimension of the valve for a successful sparing surgery.