Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Patent
1981-10-22
1984-01-03
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
044235259
ABSTRACT:
The prosthesis comprises an annular frame and a disc-shaped obturator which is coupled to the frame and is pivotable, under the action of the blood flow, between an open annular position and a closed angular position, so as to allow the flow of blood through the aperture of the annular frame in one direction and the interruption of the flow in the opposite direction, respectively. The obturator is coupled to the frame in such a way that, in the open position, it may orient itself in a direction substantially perpendicular to the plane of the frame. The side of the obturator which faces away from the central axis of the annular frame in the open angular position is defined, at least in its peripheral part, by a surface which is generated by the rotation, about the central axis of the obturator, of a curve the locus of the centers of curvature of which lies on the opposite side of this curve from a curve which generates, by rotation around the central axis, a surface defining the other side of the obturator.
REFERENCES:
patent: 3476143 (1969-11-01), Kaster
patent: 4240161 (1980-12-01), Huffstutler, Jr. et al.
patent: 4308624 (1982-01-01), Klawitter
Bona Gioachino
Vallana Franco
Frinks Ronald L.
Sorin Biomedica S.p.A.
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