Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Heart valve – Having rigid or semirigid pivoting occluder
Patent
1993-09-29
1998-10-20
Clarke, Robert A.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Heart valve
Having rigid or semirigid pivoting occluder
A61F 224
Patent
active
058240608
ABSTRACT:
A natural tissue heart valve includes a tubular wall having an outflow section and valve leaflets which allow flow into the outflow section. A heart valve of this type is subjected to a fixative fluid to provide a first differential fluid pressure across the tubular wall of the outflow section and a second differential fluid pressure across the valve leaflets. The first differential fluid pressure acts outwardly on the tubular wall, and the differential pressures are unequal.
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Butterfield et al. "Improved Outlet Geometry and Function in Porcine BioProsthetic Heart Valves: The Next Generation" Apr. 1992, p. 82.
Butterfield et al. "Hydrodynamic Function of Second Generation Porcine Bioprosthetic Heart Valves" Dec. 1991 Journal of Cardiac Surgery vol. 6, No. 4, 1991.
Barratt-Boyes et al. "The Stentless Bioprosthesis=Surgical Challenges & Implications for Long Term Durability" European Journal of Cardio-thoracis Surgery 1992 S.39-S.43.
Christie Grant W.
Eberhardt Carol E.
Clarke Robert A.
Forrest Peter
Kinghorn Curtis D.
Medtronic Inc.
Patton Harold R.
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