Prosthetic heart valve systems
First Claim
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1. A prosthetic heart valve comprising:
- a sewing ring from which a plurality of stent posts extend in an axial direction, wherein the sewing ring is a generally tubular structure that is expandable from a first configuration to a second configuration, wherein an internal area of the sewing ring is smaller in its first configuration than in its second configuration;
at least one leaflet attached within an interior area of the sewing ring; and
a reconfigurable support structure, wherein at least a portion of the support structure is attached to at least one of the stent postswherein the prosthetic heart valve is configured such that an orifice diameter collectively defined by the stent posts is dictated by the support structure, including the orifice diameter increasing as the support structure is modified from a first shape to a second shape.
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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.
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Citations
12 Claims
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1. A prosthetic heart valve comprising:
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a sewing ring from which a plurality of stent posts extend in an axial direction, wherein the sewing ring is a generally tubular structure that is expandable from a first configuration to a second configuration, wherein an internal area of the sewing ring is smaller in its first configuration than in its second configuration; at least one leaflet attached within an interior area of the sewing ring; and a reconfigurable support structure, wherein at least a portion of the support structure is attached to at least one of the stent posts wherein the prosthetic heart valve is configured such that an orifice diameter collectively defined by the stent posts is dictated by the support structure, including the orifice diameter increasing as the support structure is modified from a first shape to a second shape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A prosthetic heart valve comprising:
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a sewing ring from which a plurality of stent posts extend in an axial direction, wherein the sewing ring is a generally tubular structure that is expandable from a first configuration to a second configuration, wherein an internal area of the sewing ring is smaller in its first configuration than in its second configuration; at least one leaflet attached within an interior area of the sewing ring; a reconfigurable support structure forming an arch, wherein at least a portion of the support structure is attached to at least one of the stent posts; and at least one restraining member positioned around a portion of the arch to maintain the arch in an unexpanded condition; wherein the support structure is configured to self-expand the arch upon removal of the restraining member.
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Specification