Implantable venous valve
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Accused Products
Abstract
A venous valve prosthesis includes a hollow conduit (40) defining a central passageway through which blood may flow. Opposing, pliable leaflet members (30) are located within the conduit and move back and forth between a first, open position, whereby blood may flow through the central passageway in a first direction, and a second, closed position, whereby blood is prevented from backflowing through the central passageway in a second direction which is opposite the first direction. A hollow and generally cylindrical support member (10, 20) retains the leaflet members and is coaxially disposed within the conduit. The support member includes opposing cutaway regions (18) defining two axially extending struts (16) supporting the leaflet members. The cutaway regions, in cooperation with the struts, allow the leaflet members to collapse inwardly to the closed position.
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Citations
52 Claims
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1-10. -10. (canceled)
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14. (canceled)
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20-40. -40. (canceled)
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41. A venous valve prosthesis comprising:
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pliable leaflet members configured to move back and forth between an open position allowing blood flow in a forward direction, and a closed position substantially blocking blood backflow;
a hollow and generally cylindrical support member retaining the leaflet members thereon; and
one or more blood leak paths passing through a leaflet member or a perimeter of the hollow and generally cylindrical support member, the one or more blood leak paths allowing a small amount of blood to backflow when the valve is in the closed position - View Dependent Claims (11, 12, 13, 15, 19)
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42. (canceled)
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43. A venous valve prosthesis comprising:
a valve assembly including at least;
a hollow and generally cylindrical support member defining a central blood flow conduit, and pliable leaflet members retained on the hollow and generally cylindrical support member and configured to move back and forth between an open position allowing blood flow through the central blood flow conduit in a forward direction and a closed position substantially blocking blood backflow through the central blood flow conduit the valve assembly including at least one surface configured to promote controlled tissue ingrowth. - View Dependent Claims (16, 17, 18, 44, 45, 46, 47, 48, 49)
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50. A venous valve prosthesis comprising:
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pliable leaflet members configured to move back and forth between an open position allowing blood flow in a forward direction and a closed position substantially blocking blood backflow; and
a hollow conduit defining a central blood flow passageway, the hollow conduit including a bulbous sinus region adjacent the leaflet members. - View Dependent Claims (51, 52)
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Specification