Method of making unitized three leaflet heart valve

Details Method of making unitized three leaflet heart valve Method of making unitized three leaflet heart valve

1980-01-22

1981-05-05

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

3 15, 156245, B29C 2700

Patent

active

042656940

ABSTRACT:
An artificial heart valve comprising a semi-rigid framework having three projecting symmetrical struts and open axially therethrough, as well as a polyurethane elastomeric membrane attached to the struts and constituting three leaflets, is formed by molding the framework, including the base and strut, using polyurethane resin; forming the elastomeric membrane, of polyurethane resin which is thin relative to the framework, and forming a thickened commissure along the leading edge of the membrane as well as reinforcing lines radiating from its base; then joining the framework with the elastomeric membrane using an adhesive cement so as to permanently bond the membrane to the framework.

REFERENCES:
patent: 2662724 (1953-12-01), Kravagna
patent: 3320972 (1967-05-01), Hugh 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.
patent: 4172295 (1979-10-01), Batten
"Segmented Polyurethane: A Polyether Polymer", John W. Boretos et al., Journal of Biomedical Materials Research, vol. 2, No. 1, Mar. 1968, pp. 121-130.

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