Spiraled commissure attachment for prosthetic valve
First Claim
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1. An implantable prosthetic valve, comprising:
- a radially collapsible and expandable annular frame;
an annular skirt coupled to an inner side of the frame;
a leaflet structure positioned within the frame and the annular skirt and comprising a plurality of leaflets each comprising two opposing side tabs, wherein each leaflet comprises a separate piece of material, wherein each side tab is rolled into a spiral and each spiral is positioned next to an adjacent spiral of an adjacent leaflet to form a plurality of annularly spaced commissures of the leaflet structure, and wherein each spiral is coupled to the annular skirt;
wherein the side tab of each spiral is rolled around a central longitudinal axis of the spiral greater than 360 degrees such that at least two layers of the side tab are in contact with each other;
wherein the skirt comprises a single sheet of material that extends continuously around the leaflet structure, and each leaflet has an inflow end portion that is sutured to the skirt by a suture line that extends along the inflow end portion of each leaflet.
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Abstract
An implantable prosthetic valve, according to one embodiment, comprises a radially collapsible and expandable frame and a leaflet structure supported within the frame. The leaflet structure can comprise a plurality of leaflets paired together at commissures. In one embodiment, the commissures can comprise leaflet tabs rolled into spirals around non-rigid reinforcing inserts. In another embodiment, the commissures can comprise a reinforcing sheet folded around leaflet tabs.
290 Citations
19 Claims
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1. An implantable prosthetic valve, comprising:
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a radially collapsible and expandable annular frame; an annular skirt coupled to an inner side of the frame; a leaflet structure positioned within the frame and the annular skirt and comprising a plurality of leaflets each comprising two opposing side tabs, wherein each leaflet comprises a separate piece of material, wherein each side tab is rolled into a spiral and each spiral is positioned next to an adjacent spiral of an adjacent leaflet to form a plurality of annularly spaced commissures of the leaflet structure, and wherein each spiral is coupled to the annular skirt; wherein the side tab of each spiral is rolled around a central longitudinal axis of the spiral greater than 360 degrees such that at least two layers of the side tab are in contact with each other; wherein the skirt comprises a single sheet of material that extends continuously around the leaflet structure, and each leaflet has an inflow end portion that is sutured to the skirt by a suture line that extends along the inflow end portion of each leaflet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An implantable prosthetic valve, comprising:
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a radially collapsible and expandable annular frame; and a leaflet structure positioned within the frame and comprising a plurality of leaflets each comprising two opposing side tabs, wherein each leaflet comprises a separate piece of material, wherein each side tab is rolled into a spiral and each spiral is positioned next to an adjacent spiral of an adjacent leaflet to form a plurality of annularly spaced commissures of the leaflet structure; wherein the side tab of each spiral is rolled around a central longitudinal axis of the spiral greater than 360 degrees such that at least two layers of the side tab are in contact with each other. - View Dependent Claims (17, 18, 19)
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Specification