Prosthetic heart valve

Details Prosthetic heart valve Prosthetic heart valve

1992-09-25

1994-05-03

Green, Randall L.

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

Heart valve

Having rigid or semirigid pivoting occluder

137527, A61F 224

Patent

active

053083610

ABSTRACT:
Bi-leaflet heart valves have valve body contours and pivot arrangements that create quick valve response to flow reversal. Valve members or leaflets, which can have flat or curved inflow and outflow surfaces, are slidably and pivotally mounted in a heart valve body of contoured profile so they can be aligned precisely parallel to blood flow in the open position. The leaflets engage either projections extending radially inward from flat wall sections in the valve body sidewall or grooves in these flat wall sections. The shape and relationship of these interengaging surfaces, together with a centrally directed surge of backflowing blood which results from the strategic location of a pair of downstream recesses in the annular valve body, cooperate to provide prompt closing rotation of the leaflets from a parallel open orientation.

REFERENCES:
patent: 4272854 (1981-06-01), Bokros
patent: 4276658 (1981-07-01), Hanson et al.
patent: 4328592 (1982-05-01), Klawitter
patent: 4443894 (1984-04-01), Klawitter
patent: 4451937 (1984-06-01), Klawitter
patent: 4731075 (1988-03-01), Gallomezo et al.
patent: 5178632 (1993-01-01), Hanson et al.

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