Puckering seal for reduced paravalvular leakage
First Claim
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1. A heart valve assembly, comprising:
- a heart valve;
a self-expandable and collapsible stent comprising an inflow end and an outflow end and being configured to support the heart valve internally, the stent having an inner surface, and an outer surface for contacting native heart tissue; and
a sealing member disposed adjacent the inflow end of the stent and connected to and extending circumferentially around the outer surface of the stent, the sealing member being entirely disposed radially outward of the outer surface of the stent, and including a plurality of radially outward extending discrete protrusions comprising a fold of material of the sealing member, each of the protrusions being disposed between two first stitchings, each first stitching coupling the sealing member to the stent, and each of the protrusions including a second stitching coupled only to the protrusions.
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Abstract
A heart valve assembly includes a heart valve, a self-expandable and collapsible stent, and a sealing member. The stent includes an inflow end and an outflow end and is configured to support the heart valve internally. The sealing member is connected to and extends circumferentially around the stent. The sealing member includes a plurality of radially outward extending protrusions comprising a fold of material of the sealing member.
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Citations
21 Claims
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1. A heart valve assembly, comprising:
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a heart valve; a self-expandable and collapsible stent comprising an inflow end and an outflow end and being configured to support the heart valve internally, the stent having an inner surface, and an outer surface for contacting native heart tissue; and a sealing member disposed adjacent the inflow end of the stent and connected to and extending circumferentially around the outer surface of the stent, the sealing member being entirely disposed radially outward of the outer surface of the stent, and including a plurality of radially outward extending discrete protrusions comprising a fold of material of the sealing member, each of the protrusions being disposed between two first stitchings, each first stitching coupling the sealing member to the stent, and each of the protrusions including a second stitching coupled only to the protrusions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A sealing member for use with a valve assembly, comprising:
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a base configured and arranged to be entirely disposed radially outward of an outer surface of a self-expandable and collapsible stent, and capable of being attached about the outer surface of the stent between the outer surface of the stent and native heart tissue; and a plurality of discrete protrusions formed in a radially outward facing surface of the base and configured to provide a sealed interface between the valve assembly and a native annulus at an implantation site, each of the protrusions being disposed between two first stitchings, each stitching coupling the base to the stent, and each of the protrusions including a second stitching coupled only to the protrusions. - View Dependent Claims (16, 17, 18)
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19. A method of manufacturing a valve assembly, comprising:
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providing a self-expandable and collapsible stent having an inner surface and an outer surface, a valve, and a sealing member for forming a plurality of discrete protrusions; forming the plurality of discrete protrusions by attaching stitchings to each of the plurality of discrete protrusions only; mounting the valve within the stent; and mounting the sealing member entirely radially outward of the outer surface of the stent with the plurality of protrusions extending radially outward. - View Dependent Claims (20, 21)
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Specification