Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Patent
1978-05-03
1980-05-27
Frinks, Ronald L.
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
137527, 1375278, A61F 122
Patent
active
042042836
ABSTRACT:
A prosthetic valve, suitable for use as a mitral valve replacement, has a D-shaped annular seat-forming member and obturating flap, the flap having a major area formed by a rigid sheet of similar D-shape and extent for direct support on the seat when the valve is closed, and a flexible sheet hinge connecting the flap and annular member as a hinge along their straight edge portions. The rigid sheet is preferably scalloped around its free edge, with a flexible skirt being located across the incursions of this shaping, and is also preferably dished inwardly towards the valve.
REFERENCES:
patent: 3370305 (1968-02-01), Goott et al.
patent: 3579642 (1971-05-01), Heffernan et al.
patent: 3656185 (1972-04-01), Carpentier
patent: 3812542 (1974-05-01), Shiley
"Evaluation of Two Prostheses for Total Replacement of the Mitral Valve" by F. S. Cross et al., The Journal of Thoracic & Cardiovascular Surgery, vol. 46, No. 6, Dec. 1963, pp. 719-725.
"Comparative Testing of Artificial Heart Valves in a Mock Circulation" by M. Klain et al., Prosthetic Heart Valves (Book) by Lyman A. Brewer III, Charles C. Thomas, Publisher, Springfield, Illinois, 1969, pp. 114-135, Liotta valve on page 123 relied upon.
Mitral Valve Prosthesis on page 16, The Bulletin of the Dow Corning Center For Aid To Medical Research, vol. 5, No. 4, 10/63, Midland, Mich.
Bellhouse Brian J.
Williams William G.
Frinks Ronald L.
National Research Development Corporation
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