Prosthetic heart valve systems
First Claim
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1. A prosthetic heart valve comprising:
- a valved conduit comprising;
a generally tubular structure comprising a proximal end, a distal end, and a central portion between the proximal and distal ends, wherein a length of the tubular structure adjacent to at least one of the proximal and distal ends has a larger diameter in its unexpanded condition than a diameter of the central portion in its unexpanded condition; and
at least one leaflet attached within an interior area of the tubular structure in the central portion;
a plurality of support structures spaced from each other and attached to the central portion of the tubular structure, wherein each of the support structures is expandable from a first configuration to a second configuration when subjected to internal radial stress, wherein the internal area of each support structure is smaller in its first configuration than in its second configuration, and wherein at least one of the plurality of support structures extends continuously about an entire circumference of the tubular structure.
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Abstract
A heart valve that can be expanded following its implantation in a patient, such as to accommodate the growth of a patient and the corresponding growth of the area where the valve is implanted, and to minimize paravalvular leakage. In one aspect, the invention may maximize the orifice size of the surgical valve. The invention includes expandable implantable conduits and expandable bioprosthetic stented valves. In one aspect of the invention, the valve may be adapted to accommodate growth of a patient to address limitation on bioprosthetic valve lifespans.
665 Citations
13 Claims
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1. A prosthetic heart valve comprising:
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a valved conduit comprising; a generally tubular structure comprising a proximal end, a distal end, and a central portion between the proximal and distal ends, wherein a length of the tubular structure adjacent to at least one of the proximal and distal ends has a larger diameter in its unexpanded condition than a diameter of the central portion in its unexpanded condition; and at least one leaflet attached within an interior area of the tubular structure in the central portion; a plurality of support structures spaced from each other and attached to the central portion of the tubular structure, wherein each of the support structures is expandable from a first configuration to a second configuration when subjected to internal radial stress, wherein the internal area of each support structure is smaller in its first configuration than in its second configuration, and wherein at least one of the plurality of support structures extends continuously about an entire circumference of the tubular structure. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A prosthetic heart valve comprising a valved conduit comprising a generally tubular structure having at least one leaflet attached within its interior area, wherein the tubular structure comprises:
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a plurality of longitudinal support members spaced from each other around the perimeter of the tubular structure; at least one deformable member attached at a first end to a first longitudinal support member and at a second end to an adjacent second longitudinal support member, wherein the at least one deformable member is reconfigurable when the tubular structure is subjected to an internal radial stress. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification