Venous valve apparatus, system, and method
First Claim
Patent Images
1. A venous valve, comprising:
- a frame having corner portions that provide a spring force to counter radial compression of the frame and with intermediate portions therebetween, the intermediate portions having a cross-sectional geometry including at least a first planar surface of a predetermined width, where each intermediate portion is twisted about three fourths of a revolution into at least a partial helical configuration and does not intersect with any other intermediate portions, and the corner portions form a first vertex and a second vertex relative a first end of the frame, a third vertex and a fourth vertex at the first end of the frame relative the first and second vertex, where the first vertex and the second vertex are positioned opposite each other along a common axis; and
a cover on the frame, wherein the cover includes surfaces defining a reversibly sealable opening for unidirectional flow of a liquid through the valve.
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Abstract
A venous valve with a frame and a cover on the frame for unidirectional flow of a liquid through the valve.
650 Citations
14 Claims
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1. A venous valve, comprising:
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a frame having corner portions that provide a spring force to counter radial compression of the frame and with intermediate portions therebetween, the intermediate portions having a cross-sectional geometry including at least a first planar surface of a predetermined width, where each intermediate portion is twisted about three fourths of a revolution into at least a partial helical configuration and does not intersect with any other intermediate portions, and the corner portions form a first vertex and a second vertex relative a first end of the frame, a third vertex and a fourth vertex at the first end of the frame relative the first and second vertex, where the first vertex and the second vertex are positioned opposite each other along a common axis; and a cover on the frame, wherein the cover includes surfaces defining a reversibly sealable opening for unidirectional flow of a liquid through the valve. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, comprising:
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positioning at least part of a catheter including a venous valve at a predetermined location, wherein the venous valve includes; a frame having corner portions that provide a spring force to counter radial compression of the frame with intermediate portions therebetween, the intermediate portions having a cross-sectional geometry including at least a first planar surface of a predetermined width, where each intermediate portion is twisted about three quarters of a revolution into at least a partial helical configuration and does not intersect with any other intermediate portions, and the corner portions form a first vertex and a second vertex relative a first end of the frame, a third vertex and a fourth vertex at the first end of the frame relative the first and second vertex, where the first vertex and the second vertex are positioned opposite each other along a common axis; a cover on the frame, wherein the cover includes surfaces defining a reversibly scalable opening for unidirectional flow of a liquid through the valve; and deploying the venous valve from the catheter at the predetermined location. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification