Leaflet abrasion mitigation
First Claim
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1. A prosthetic heart valve, comprising:
- a stent extending in a longitudinal direction and having a plurality of struts forming cells and a plurality of commissure features, each commissure feature being attached to selected struts at proximal and distal ends thereof;
a plurality of leaflets, each of the leaflets having a pair of attachment regions, each being attached to a commissure feature, and a free edge extending between the attachment regions; and
a cuff annularly disposed on a surface of the stent, the cuff extending between a first end and a second end, and having a main body, a rectangular portion disposed over each of the commissure features of the stent, and a deflection feature adjacent each of the rectangular portions near the second end of the cuff, the deflection feature being folded on itself, and entirely disposed on a luminal surface of the stent, and the deflection feature being configured and arranged to prevent the free edge of the leaflet from contacting at least one of the stent, and a calcium nodule.
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Abstract
A prosthetic heart valve includes a stent extending in a longitudinal direction and having a plurality of commissure features. A valve assembly is secured to the stent, the valve assembly including a cuff and a plurality of leaflets. Each of the leaflets has a pair of attachment regions and a free edge extending between the attachment regions. A deflection feature disposed in each attachment region is configured and arranged to prevent the free edges of the leaflets from contacting at least one of the stent or the cuff.
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Citations
5 Claims
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1. A prosthetic heart valve, comprising:
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a stent extending in a longitudinal direction and having a plurality of struts forming cells and a plurality of commissure features, each commissure feature being attached to selected struts at proximal and distal ends thereof; a plurality of leaflets, each of the leaflets having a pair of attachment regions, each being attached to a commissure feature, and a free edge extending between the attachment regions; and a cuff annularly disposed on a surface of the stent, the cuff extending between a first end and a second end, and having a main body, a rectangular portion disposed over each of the commissure features of the stent, and a deflection feature adjacent each of the rectangular portions near the second end of the cuff, the deflection feature being folded on itself, and entirely disposed on a luminal surface of the stent, and the deflection feature being configured and arranged to prevent the free edge of the leaflet from contacting at least one of the stent, and a calcium nodule. - View Dependent Claims (2, 3, 4, 5)
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Specification