Prosthetic heart valve having a polymeric stent
First Claim
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1. A prosthetic heart valve, comprising:
- an annular stent having a base and annularly spaced commissure portions projecting from the base, each commissure portion including a tip, the stent including an inflow edge on the base, an outflow edge extending between the tips, and a plurality of openings between the inflow edge and the outflow edge, each of the openings having a first edge extending generally parallel to the inflow edge at a first spaced distance from the inflow edge and a second edge extending generally parallel to the outflow edge at a second spaced distance from the outflow edge, the second spaced distance being greater than the first spaced distance, and the stent being comprised of a polymeric material;
a fabric covering the stent;
a first layer of tissue covering the fabric; and
a second layer of tissue overlying the first layer of tissue and including leaflet portions that extend inwardly between annularly adjacent ones of the commissure portions.
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Abstract
A prosthetic heart valve includes annularly spaced commissure portions, each of which includes a tip. The stent is formed from a polymeric material, and is specifically configured to perform similarly to conventional metal stents. A first fabric covers each of the tips, and a second fabric covers the first fabric and remaining exposed portions of the stent. A first layer of tissue covers the second fabric, and a second layer of tissue overlies the second fabric. The second layer of tissue includes leaflet portions that extend inwardly between annularly adjacent ones of the commissure portions.
7 Citations
12 Claims
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1. A prosthetic heart valve, comprising:
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an annular stent having a base and annularly spaced commissure portions projecting from the base, each commissure portion including a tip, the stent including an inflow edge on the base, an outflow edge extending between the tips, and a plurality of openings between the inflow edge and the outflow edge, each of the openings having a first edge extending generally parallel to the inflow edge at a first spaced distance from the inflow edge and a second edge extending generally parallel to the outflow edge at a second spaced distance from the outflow edge, the second spaced distance being greater than the first spaced distance, and the stent being comprised of a polymeric material; a fabric covering the stent; a first layer of tissue covering the fabric; and a second layer of tissue overlying the first layer of tissue and including leaflet portions that extend inwardly between annularly adjacent ones of the commissure portions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification