Cardiac valvular prosthesis of mechanical type provided with two

Details Cardiac valvular prosthesis of mechanical type provided with two Cardiac valvular prosthesis of mechanical type provided with two

1982-03-05

1985-08-20

Frinks, Ronald L.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Heart valve

Having rigid or semirigid pivoting occluder

1375121, 137527, A61F 122

Patent

active

045354847

ABSTRACT:
Cardiac valvular prosthesis of mechanical type consisting 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 of moving with both rotation and translation 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 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 separated and independent, or can form part of one structure devoid of discontinuity; this latter case is shown in FIGS. 3 and 4 of the drawing. The leaflet thickness can also not be uniform, as well as the profiles of the two sides of each leaflet can be different.

REFERENCES:
patent: 3689942 (1972-09-01), Rapp
patent: 3903548 (1975-09-01), Nakib
patent: 4363142 (1982-12-01), Meyer
patent: 4373216 (1983-02-01), Klawitter

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