[Pressure distribution on the surface of the cut-off elements of artificial heart valves]

With hydroaerodynamic investigations into pressure distribution on the surface of blocking components in artificial cardiac valves in the shape of a sphere, semisphere, lens and a disc opening at an angle serving as a basis a quantitative evaluation of the arrangement for the flow separation, evacuation peak regions and congestion zones is given. The highest velocity, greatest evacuation and shear stress occur in a flow-past of a valve having a shape of the lens. The disc valve opening at an angle, as concerns its hydrodynamic characteristics, is superior to the valves of all the other designs considered in the present work.