Unitized three leaflet heart valve

Details Unitized three leaflet heart valve Unitized three leaflet heart valve

1978-12-14

1980-09-16

Frinks, Ronald L.

Fluid handling

Flow affected by fluid contact, energy field or coanda effect

Means to regulate or vary operation of device

137849, A61F 122

Patent

active

042221269

ABSTRACT:
A polyurethane heart valve has a semirigid frame composed of a base ring and three struts, and an elastomeric membrane integral and unitary with the frame, the contours of which make up three leaflets of the valve. The leading edges of the leaflets which form the commissure line are reinforced with a narrow elastomer band. The leaflets are further reinforced by radiating lines projected from the frame into the leaflet and which simulate collagen formation in natural leaflets. In addition, the transition between the frame and the leaflets is tapered.

REFERENCES:
patent: 2662724 (1953-12-01), Kravagna
patent: 3320972 (1967-05-01), High et al.
patent: 3445916 (1969-05-01), Schulte
patent: 3548417 (1970-12-01), Kischer
patent: 3744062 (1973-07-01), Parsonnet
patent: 3755823 (1973-09-01), Hancock
patent: 3940802 (1976-03-01), Sako et al.
"Segmented Polyurethane: A Polyether Polymer", by John W. _Boretos et al., Journal of Biomedical Materials Research, vol. 2, No. 1, Mar. 1968, pp. 121-130.

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