New Aortic Valve Prosthesis - A Concept and Realization of Mechanical Valve Prosthesis Compatible with the Flow in Aorta

A new type of mechanical aortic valve prosthesisTornado-compatible valve (TCV) is worked out basing on the principle of hydrodynamic compatibility with the swirling Tornado-like blood flow present in the heart cavities and main arteries. The design and profile of the TCV were calculated basing on the exact solution of the non stationary hydrodynamic equations for the class of self organizing Tornado-like flows of viscous medium. According to the results of standard hydrodynamic testing, TCV has shown the best functional characteristics as compared to other types of aortic valve prostheses used currently in the cardiac surgery. A special test was performed to study the interaction of TCV and other prostheses with the Tornado-like jet, generated artificially in the experimental stand. It has been shown that all existing valve prosthesis designs except TCV destroy completely the structure of the swirling Tornado-like jet augmenting significantly a hydrodynamic resistance to the flow. When testing in a turbulent flow TCV decreases significantly the resistance of the channel. The result of successful TCV implantation in the animal experiment for more than half a year is reported. TCV preserve its functionality even without any anticoagulant therapy.