| 摘要 |
A prosthetic valve and an associated method of implanting the valve within a blood vein utilize a valve support ring and a pair of leaflet members pivotally connected to the ring. The valve is positionable within a radial plane of the blood vessel for permitting substantially unidirectional flow through the blood vein. The support ring is not required to be sutured within a blood vein and instead includes an outer surface defining a radially outwardly-directed annular groove, so that the valve can be secured within the blood vein by means of a cord tied around of the blood vein and in a tightened condition within the annular groove. The support ring is held in such fixed position along the length of the blood vein because the blood vein is held between the support ring outer surface and the cord. Furthermore, the support ring outer surface is contoured in such a manner so that when the valve is operatively secured within a blood vein, the inner wall of the blood vein lies in substantial conformity to the shape of the ring outer surface.
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