MECHANICAL CARDIAC VALVE Russian patent published in 2013 - IPC A61F2/24 

FIELD: medicine.

SUBSTANCE: group of inventions refers to medicine. A valve comprises a ring-shaped support, at least two movable cusps, a ring-shaped support comprising an edge from an outer side of an anterograde flow referred to as an outer edge, and a number of hinged extensions which are axially extended from the outer edge and a number of which matches with a number of cusps. The extensions have hinge zones interacting with the movable cusps from the open position into the closed position and back. Each cusp comprises a central portion an external surface of which has a common convex form towards one side cusp to the opposite side cusp, symmetrically bordered by two side cusps which are inclined with respect to this central portion. Both cusps interact to turn the cusp with the inner surfaces of two hinged extensions by a portion of each cups referred to as a final one. Each final portion has an external surface which in the open position of the cusp leans against an internal surface of the relevant hinged extension. The hinged facets have a common surface less than 5% of the common external surface of the cusp. What is disclosed is a cusp used in the valve.

EFFECT: improved hydrodynamic characteristics.

23 cl, 20 dwg