Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Heart valve – Having rigid or semirigid pivoting occluder
Patent
1991-07-15
1992-08-11
Green, Randall L.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Heart valve
Having rigid or semirigid pivoting occluder
137527, 251212, A61F 224
Patent
active
051375320
ABSTRACT:
Bi-leaflet heart valves have improved flow characteristics in their open position as a result of employing valve bodies of elongated axial dimension. By elongating the axial dimension of valve bodies which have straight, smooth interior wall surfaces oriented parallel to the centerline through the valve and to the flow path of blood, and by employing a pair of occluders which have major surfaces that are rectilinear and can assume an orientation that is substantially parallel to the centerline in the open position, a streamlining of blood flow occurs. The pivot arrangements avoid the use of acute angular surface orientations and cause the occluders, although aligned substantially parallel to blood flow in the open position, to promptly pivot toward the closed position upon reversal of blood flow. This streamlining substantially reduces turbulence and results in low head loss, both significant advantages in bi-leaflet heart valve performance.
REFERENCES:
patent: 3118468 (1964-01-01), Bochan
patent: 3589392 (1971-06-01), Meyer
patent: 3689942 (1972-09-01), Rapp
patent: 3744060 (1973-07-01), Bellhouse et al.
patent: 3974854 (1976-08-01), Kurpanek
patent: 4078268 (1978-03-01), Possis
patent: 4118806 (1978-10-01), Porier et al.
patent: 4178638 (1979-12-01), Meyer
patent: 4308624 (1982-01-01), Klawitter
patent: 4328592 (1982-05-01), Klawitter
patent: 4597767 (1986-07-01), Lenkei
patent: 4822353 (1989-04-01), Bokros
patent: 4863459 (1989-09-01), Olin
patent: 4863467 (1989-09-01), Bokros
patent: 5041131 (1991-08-01), Nagase
Bokros Jack C.
Emken Michael R.
Haubold Axel D.
Peters T. Scott
Stupka Jonathan C.
Green Randall L.
Onx, Inc.
Willse D.
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