Leaflet in configuration for function in various shapes and sizes
First Claim
Patent Images
1. A prosthetic heart valve, comprising:
- a collapsible and expandable stent having a proximal end, a distal end, an annulus section adjacent the proximal end, an aortic section adjacent the distal end, and a plurality of commis sure features disposed on the stent;
a collapsible and expandable valve assembly, the valve assembly including a plurality of leaflets connected to the plurality of commissure features, each of the plurality of leaflets having a body portion, a free edge adapted to coapt with free edges of adjacent leaflets, and an attachment portion opposite each free edge;
a cuff disposed on a surface of the stent;
a plurality of reinforcements formed of at least one of a cord, a wire and a strip of fabric, each reinforcement being coupled to a respective attachment portion of each of the plurality of leaflets and being separate from the respective attachment portion in a transverse cross-section; and
a first suture pattern coupling the reinforcement to the attachment portion by looping around the reinforcement such that each reinforcement is positioned radially between the body portion of one of the plurality of leaflets and the cuff.
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Abstract
A prosthetic heart valve includes a collapsible and expandable stent having a proximal end, a distal end, an annulus section adjacent the proximal end and an aortic section adjacent the distal end. The heart valve further includes a plurality of commissure features disposed on the stent, and a collapsible and expandable valve assembly, the valve assembly including a plurality of leaflets connected to the plurality of commissure features, each of the plurality of leaflets having a free edge and being configured to have a tension line aligned near the free edge to prevent backflow.
145 Citations
20 Claims
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1. A prosthetic heart valve, comprising:
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a collapsible and expandable stent having a proximal end, a distal end, an annulus section adjacent the proximal end, an aortic section adjacent the distal end, and a plurality of commis sure features disposed on the stent; a collapsible and expandable valve assembly, the valve assembly including a plurality of leaflets connected to the plurality of commissure features, each of the plurality of leaflets having a body portion, a free edge adapted to coapt with free edges of adjacent leaflets, and an attachment portion opposite each free edge; a cuff disposed on a surface of the stent; a plurality of reinforcements formed of at least one of a cord, a wire and a strip of fabric, each reinforcement being coupled to a respective attachment portion of each of the plurality of leaflets and being separate from the respective attachment portion in a transverse cross-section; and a first suture pattern coupling the reinforcement to the attachment portion by looping around the reinforcement such that each reinforcement is positioned radially between the body portion of one of the plurality of leaflets and the cuff. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of forming a prosthetic heart valve, comprising:
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providing a collapsible and expandable stent having a proximal end, a distal end, an annulus section adjacent the proximal end, an aortic section adjacent the distal end, a lumen extending from the proximal end to the distal end, and a plurality of commissure features, the stent having a cuff disposed on a surface of the stent; providing a collapsible and expandable valve assembly, the valve assembly including a plurality of leaflets connected to the plurality of commis sure features, each of the plurality of leaflets having a free edge adapted to coapt with free edges of adjacent leaflets, a body portion, and an attachment portion opposite the free edge; providing a reinforcement formed of at least one of a cord, a wire and a strip of fabric; and coupling the reinforcement to the attachment portion of one leaflet using a first suture pattern by looping around the reinforcement such that the reinforcement is separate from the respective attachment portion in a transverse cross-section and such that each reinforcement is positioned radially between the body portion of one of the plurality of leaflets and the cuff. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification