Prosthetic Heart Valve Having an Improved Tubular Seal
First Claim
Patent Images
1. A prosthetic heart valve comprising:
- an expandable tubular member;
a plurality of leaflets secured together alongside edges and retained within the expandable tubular member, each leaflet having a bottom edge at a blood inflow end of the expandable tubular member and a free edge at a blood outflow end of the expandable tubular member; and
a tubular seal comprising a polymeric web secured to the bottom edge of each leaflet and along an outer portion of the expandable tubular member, wherein the tubular seal comprising an outflow end region and an inflow end region, the inflow end region being a portion of polymeric web retaining a woven fabric, wherein the woven fabric has a non-linear edge defining the interface between the inflow end region and the outflow end region.
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Abstract
A tubular seal includes an outflow end region and an inflow end region. The inflow end region is a portion of a polymeric web retaining a woven fabric, wherein the woven fabric has a non-linear edge defining an interface between the inflow end region and the outflow end region.
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Citations
20 Claims
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1. A prosthetic heart valve comprising:
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an expandable tubular member; a plurality of leaflets secured together alongside edges and retained within the expandable tubular member, each leaflet having a bottom edge at a blood inflow end of the expandable tubular member and a free edge at a blood outflow end of the expandable tubular member; and a tubular seal comprising a polymeric web secured to the bottom edge of each leaflet and along an outer portion of the expandable tubular member, wherein the tubular seal comprising an outflow end region and an inflow end region, the inflow end region being a portion of polymeric web retaining a woven fabric, wherein the woven fabric has a non-linear edge defining the interface between the inflow end region and the outflow end region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A tubular seal for a prosthetic heart valve comprising:
an elastomeric polymer matrix and a woven fabric comprising a plurality of non-elastic fibers retained within an inflow end region of the elastomeric polymer matrix, wherein the woven fabric comprising a non-linear edge within the elastomeric polymer matrix. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method comprising:
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forming at least a portion of a tubular seal that includes a woven fabric within a matrix by dipping a mandrel with a first coating composition comprising at least one elastomeric polymer; drying the first coating composition; positioning the woven fabric on the mandrel such that fibers within the fabric are oriented at an angle of about 45 degrees with respect to a central axis of the tubular seal; applying a second coating composition on the mandrel, the second coating composition being different than the first coating composition; and removing the tubular seal from the mandrel.
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Specification