Leaflet-cuff attachments for prosthetic heart valve
First Claim
1. A prosthetic heart valve, comprising:
- a stent having a collapsed condition and an expanded condition, the stent having a proximal end, a distal end and a plurality of commissure features;
a valve assembly secured to the stent, the valve assembly including a cuff and a plurality of leaflets, each of the leaflets having a free edge, and a second edge opposite the free edge and being secured to the cuff, the second edge having a first end, a second end, a first folded portion adjacent the first end, a second folded portion adjacent the second end, and an unfolded portion between the first and second folded portions, the first and second folded portions coupling the leaflet to at least one of the commissure features; and
wherein each leaflet comprises a continuous reinforcement spaced away from the second edge and following the curvature of the second edge, each continuous reinforcement being disposed along the unfolded portion of the leaflet and extending over the first and second folded portions to secure the first and second folded portions to other portions of the leaflet.
1 Assignment
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Accused Products
Abstract
A prosthetic heart valve includes a stent having a collapsed condition and an expanded condition, the stent having a proximal end, a distal end and a plurality of commissure features. The heart valve further includes a valve assembly secured to the stent, the valve assembly including a cuff and a plurality of leaflets, each of the leaflets having a free edge having a first end and a second end, and a second edge secured to the cuff, the second edge having a first end, a second end, a first folded portion adjacent the first end, a second folded portion adjacent the second end, and an unfolded portion between the first and second folded portions. The first and second folded portions couple the leaflet to ones of the commissure features.
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Citations
17 Claims
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1. A prosthetic heart valve, comprising:
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a stent having a collapsed condition and an expanded condition, the stent having a proximal end, a distal end and a plurality of commissure features; a valve assembly secured to the stent, the valve assembly including a cuff and a plurality of leaflets, each of the leaflets having a free edge, and a second edge opposite the free edge and being secured to the cuff, the second edge having a first end, a second end, a first folded portion adjacent the first end, a second folded portion adjacent the second end, and an unfolded portion between the first and second folded portions, the first and second folded portions coupling the leaflet to at least one of the commissure features; and wherein each leaflet comprises a continuous reinforcement spaced away from the second edge and following the curvature of the second edge, each continuous reinforcement being disposed along the unfolded portion of the leaflet and extending over the first and second folded portions to secure the first and second folded portions to other portions of the leaflet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A prosthetic valve assembly, comprising:
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a substantially cylindrical cuff; a plurality of leaflets disposed inside the cuff, each of the plurality of leaflets having a free edge, and a second edge opposite the free edge, the second edge having an unfolded portion extending between two folded portions; a reverse-running stitch coupled to unfolded and folded portions of each of the leaflets, the reverse-running stitch having an outer part disposed between the cuff and each of the leaflets and an inner part disposed on an opposite side of each of the leaflets; and a suture for coupling the cuff to each of the leaflets. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification