Prosthetic heart valve

Details Prosthetic heart valve Prosthetic heart valve

1989-01-28

1989-10-10

Frinks, Ronald L.

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

Heart valve

Having rigid or semirigid pivoting occluder

1375121, 137527, A61F 224

Patent

active

048728756

ABSTRACT:
A heart valve of the bi-leaflet or monoleaflet type having improved reductions in drag on blood flow through the fully opened heart valve. The leaflets are pivotally mounted in a heart valve body for movement between closed and opened positions. The leaflets have opposed inflow and outflow surfaces. The inflow surface includes a concave region located downstream of the leaflet pivot axis, and a convex region located downstream of the concave region. The outflow surface of the leaflets is generally convex, at least in that portion directly opposing the concave and convex regions of the inflow surface. The angle of leaflet opening is controlled to values ranging between 70.degree. and about 89.degree..

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patent: 4308624 (1982-01-01), Klawitter
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patent: 4423525 (1984-01-01), Vallana et al.
patent: 4425670 (1984-01-01), Figuera
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patent: 4512366 (1985-04-01), Lewis
patent: 4535484 (1985-08-01), Marconi
patent: 4601719 (1986-07-01), Totten
patent: 4605408 (1986-08-01), Carpentier
patent: 4775378 (1988-10-01), Knoch et al.

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