Correction of incompetent venous valves

Details Correction of incompetent venous valves Correction of incompetent venous valves

1991-11-08

1992-09-15

Isabella, David

Prosthesis (i.e., artificial body members), parts thereof, or ai

Heart valve

Having rigid or semirigid pivoting occluder

623 1, A61F 224

Patent

active

051473895

ABSTRACT:
A cuff for restoring competence to an incompetent venous valve consists of a band of biocompatible implantable material that is not stretchable at blood flow pressures. The band is of sufficient length to encompass the vein at the site of the venous valve with the ends of the band overlapping. In one form of attachment, the end 22 passes over the loop 23 and is stapled thereto. The cuff can be attached to an applicator by means of the loop 23. A portion 26 of reduced thickness extends from the bottom face of the band to reduce any inner surface discontinuities with respect to the wall of the vein.
The cuff is placed around the vein at the site of the valve and the circumference of the cuff (and hence the diameter of the vein at the valve site) is reduced until competency of the valve in the vein is restored.

REFERENCES:
patent: 2756753 (1956-09-01), Means
patent: 3254651 (1966-06-01), Collito
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patent: 3435823 (1969-04-01), Edwards
patent: 3726279 (1973-04-01), Barefoot et al.
patent: 4549531 (1955-10-01), Trick
patent: 4587955 (1986-05-01), Gengler
patent: 4602911 (1986-07-01), Ahmadi et al.
patent: 4632114 (1986-12-01), Todd et al.
patent: 4634443 (1987-01-01), Haber

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