Mechanical cardiac valve

Details Mechanical cardiac valve Mechanical cardiac valve

A - Human Necessities

61

F

3/117

A61F 2/22 (1985.01)

Patent

CA 1210205

ABSTRACT OF THE DISCLOSURE Cardiac valvular prosthesis of mechanical type con- sisting of a sewing ring welded to a housing orifice where, in the absence of pins or hinges, two leaflets, preferably provided with a slight curvature, are free to move with both rotational and translational movement. This is achieved through suitable metal structures, able both to permit the correct opening and closing of the leaflets (i.e. to act as a rotation fulcrum) and to guarantee the guidance and the right positioning of the leaflets (i.e. to exert a constraint). The "rotation fulcrum" and the "constraint" structures can be separate and independent, or can form part of one structure devoid of discontinuity.

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