Prosthetic heart valve

Details Prosthetic heart valve Prosthetic heart valve

1992-07-24

1993-09-21

Green, Randall L.

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

Heart valve

Having rigid or semirigid pivoting occluder

137527, A61F 224, F16K 1500

Patent

active

052464539

ABSTRACT:
Bi-leaflet and single occluder heart valves have improved pivot arrangements that create quick valve response to flow reversal and minimize impact. Valve members or occluders, which have curved inflow and outflow surfaces, are slidably and pivotally mounted in a heart valve body and can be aligned precisely parallel to blood flow in the open position. Lugs on the valve members engage surfaces on projections extending radially inward from flat wall sections in the valve body sidewall, and the shape and relationship of these interengaging surfaces provide prompt initial rotation, low wear and reduced impact upon closing. Laterally directed ears engage the valve body arcuate sidewall and assist in defining the path of closing movement.

REFERENCES:
patent: 4308624 (1982-01-01), Klawitter
patent: 4328592 (1982-05-01), Klawitter
patent: 4425670 (1984-01-01), Figuera
patent: 4443894 (1984-04-01), Klawitter
patent: 4872875 (1989-10-01), Hwang
patent: 5116366 (1992-05-01), Hwang

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