1977-04-25
1980-03-11
Frinks, Ronald L.
A61F 122
Patent
active
041920201
ABSTRACT:
A prosthesis for an inadequate or diseased heart valve, the prosthesis being formed of a porous fabric comprising multifilament synthetic yarns supported on a plural-lobed frame. The frame has generally parallel legs each comprising a pair of rod portions. The fabric is inserted between the rod portions of the legs to form flexible leaflets. Each leaflet consists essentially of a textile of filaments having a substantial number of open interstitial spaces in the range of 20 to 40 microns evenly distributed throughout the fabric. The resulting composite structures are free of thrombogenic complications.
REFERENCES:
patent: 3571815 (1971-03-01), Somyk
patent: 3608097 (1971-09-01), Bellhouse et al.
patent: 3736598 (1973-06-01), Bellhouse et al.
"The Direct Approach for the Correction of Aortic Insufficiency," by Charles A. Hufnagel et al., J.A.M.A., vol. 178, No. 3, Oct. 21, 1961, pp. 275-279.
"Comparative Study of Some Prosthetic Valves for Aortic and Mitral Replacement, Surgery," vol. 57, No. 1, Jan. 1965, pp. 205-210, by C. A. Hufnagel et al.
Clark Richard E.
Davis Robert B.
Skelton John
Swanson Wilbur M.
Albany International Corporation
Frinks Ronald L.
Washington University
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