Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Heart valve – Having rigid or semirigid pivoting occluder
Patent
1996-08-12
1998-09-29
Yu, Mickey
Prosthesis (i.e., artificial body members), parts thereof, or ai
Heart valve
Having rigid or semirigid pivoting occluder
137512, 137527, A61F 224
Patent
active
058140999
ABSTRACT:
A bileaflet prosthetic valve has leaflet pivots symmetrically or centrically located, thereby providing a central opening about twice the size of the two lateral openings. The valve opens from the center outward to provide nonturbulent central flow. The laminar leaflets are curved in cross-section so that the downstream edges of the leaflets are closer to the centerline of the cylindrical support ring when the leaflets are in an opened configuration. This position disposes the leaflets to favor valve closure when reverse flow of blood occurs. As the leaflets move toward a closed position, upstream edges of the leaflets begin to close the lateral openings, but this movement is opposed by blood flowing through these openings thereby providing a force to decelerate the leaflets and cushion their final closing. When the valve is fully closed, a single point of contact between the upstream edge of each leaflet and the support ring leaves a small gap between the support ring and the rest of the upstream edge and prevents the downstream edges from touching each other when they close the central opening.
REFERENCES:
patent: 2822819 (1958-02-01), Geeraert
patent: 3445863 (1969-05-01), Wada
patent: 3608097 (1971-09-01), Bellhouse et al.
patent: 3903548 (1975-09-01), Nakib
patent: 4078268 (1978-03-01), Possis
patent: 4114202 (1978-09-01), Roy et al.
patent: 4291420 (1981-09-01), Reul
patent: 4339831 (1982-07-01), Johnson
patent: 4345340 (1982-08-01), Rosen
patent: 4406022 (1983-09-01), Roy
patent: 4416029 (1983-11-01), Kaster
patent: 4446577 (1984-05-01), Meyer et al.
patent: 4451937 (1984-06-01), Klawitter
patent: 4473423 (1984-09-01), Kolff
patent: 4488318 (1984-12-01), Kaster
patent: 4510628 (1985-04-01), Kolff
patent: 4822999 (1989-04-01), Philippe et al.
patent: 4863459 (1989-09-01), Olin
patent: 5026391 (1991-06-01), McQueen et al.
patent: 5078739 (1992-01-01), Martin
patent: 5080669 (1992-01-01), Tascon et al.
patent: 5108425 (1992-04-01), Hwang
patent: 5116367 (1992-05-01), Hwang et al.
patent: 5123920 (1992-06-01), Bokros
patent: 5147390 (1992-09-01), Campbell
patent: 5152785 (1992-10-01), Bokros et al.
patent: 5192309 (1993-03-01), Stupka et al.
patent: 5236449 (1993-08-01), Bokros et al.
patent: 5314467 (1994-05-01), Shu
patent: 5326372 (1994-07-01), Mhatre et al.
patent: 5350421 (1994-09-01), Stupka et al.
patent: 5354330 (1994-10-01), Hanson et al.
patent: 5376111 (1994-12-01), Bokros et al.
patent: 5397347 (1995-03-01), Cuilleron et al.
patent: 5405381 (1995-04-01), Olin
patent: 5405382 (1995-04-01), Kukolinikov et al.
patent: 5443501 (1995-08-01), Barmada
patent: 5628791 (1997-05-01), Bokros et al.
Bicer-valve.RTM. Cardiac Prostheses Brochure, Canada Undated.
The Edwards-Duromedics.TM. Bileaflet valve Brochure, Irvine, CA Undated.
SJM Updated Brochure, Minnesota Apr. 1984.
Cuddihy Francis K.
Kirchanski Stefan J.
Yu Mickey
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