Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Heart valve – Having rigid or semirigid pivoting occluder
Patent
1998-02-20
1999-06-01
Yu, Mickey
Prosthesis (i.e., artificial body members), parts thereof, or ai
Heart valve
Having rigid or semirigid pivoting occluder
623900, A61F 224
Patent
active
059084529
ABSTRACT:
A prosthetic heart valve is shown which incorporates a valve body design and leaflet pivot arrangements that minimize turbulence and shear stresses having a tendency to generate thrombosis. A valve body having an axially curved entrance that is smoothly joined to a generally cylindrical body of extended axial length provides excellent fluid flow characteristics when combined with leaflets that can assume orientations perfectly aligned with the downstream flow of blood. By constructing such a pyrocarbon valve body which receives a metal ring at an appropriate location, suture rings that permit the tissue annulus to directly contact the exterior surface of the cylindrical valve body are accommodated.
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M. Knoch, H. Reul and G. Rau, "Flow Characteristics of Six Mechanical Heart Valve Prostheses in Aortic Position: Design Related Model Studies", Surgery for Heart Valve Disease (ed. Endre Bodnar) , ICR Publishers, London (1990) ISBN 1-872743-00-5, pp. 590-601.
Bokros Jack C.
Ely John L.
Emken Michael R.
Haubold Axel D.
Peters T. Scott
Cuddihy Francis K.
Medical Carbon Research Institute, LLC
Yu Mickey
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