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US 10,646,336 B2Granted
Leaflet attachment frame for prosthetic valve
AssigneeEdwards Lifesciences Corporation
InventorNetanel Benichou
Life of this patent
Estimating the term…
Abstract
An implantable prosthetic valve has an upper frame section and a lower frame section. The upper frame section has a plurality of struts and a first leaflet receiving surface at a lower portion of the upper frame section. The lower frame section has a second leaflet receiving surface at an upper portion of the lower frame section. An edge of a flexible leaflet is disposed between the first and second leaflet receiving surfaces to attach the leaflet to the upper and lower frame sections.
Claims19
An implantable prosthetic valve, comprising:
- a radially collapsible and expandable annular frame comprising a plurality of struts and having an upper end and a lower end, wherein the struts are arranged to form a plurality of circumferentially extending rows of closed cells, including an uppermost row of closed cells defining the upper end of the frame and a lowermost row of closed cells defining the lower end, wherein the frame comprises a material selected from the group comprising stainless steel and a cobalt-chromium alloy;
- a leaflet structure positioned within the frame, the leaflet structure comprising a plurality of leaflets each comprising two opposing leaflet side portions, each of the leaflet side portions being paired with an adjacent leaflet side portion of an adjacent leaflet to form commissures of the leaflet structure, wherein each leaflet has a scalloped shaped lower edge portion extending from one side portion to the other side portion of the leaflet;
- wherein the frame comprises a pair of posts adjacent each of the commissures, the posts of each pair being spaced apart from each other so as to define an opening therebetween, wherein the posts of each pair are connected to each other at their upper ends, wherein the pairs of posts have respective lower ends that are axially spaced from the lower end of the frame, wherein the pairs of posts are positioned axially along the frame entirely within the uppermost row of closed cells;
- wherein the pairs of posts are circumferentially spaced apart from each other by a plurality of cells of the uppermost row of closed cells;
- and
- wherein each pair of leaflet side portions extends radially outwardly through the opening of a respective pair of posts and is secured to the posts outside of the frame.
3 more elements
An implantable prosthetic valve, comprising:
- a radially collapsible and expandable annular frame comprising a plurality of struts and having an upper end and a lower end, wherein the struts are arranged to form a plurality of circumferentially extending rows of closed cells, including an uppermost row of closed cells defining the upper end of the frame and a lowermost row of closed cells defining the lower end, wherein the frame comprises a material selected from the group comprising stainless steel and a cobalt-chromium alloy;
- a leaflet structure positioned within the frame, the leaflet structure comprising a plurality of leaflets each comprising two opposing leaflet side portions, each of the leaflet side portions being paired with an adjacent leaflet side portion of an adjacent leaflet to form commissures of the leaflet structure;
- wherein the frame comprises a pair of posts adjacent each of the commissures, the posts of each pair being spaced apart from each other so as to define an opening therebetween, wherein the posts of each pair are connected to each other at their upper ends, wherein the pairs of posts have respective lower ends that are axially spaced from the lower end of the frame;
- wherein the pairs of posts are positioned axially along the frame entirely within the uppermost row of closed cells and the pairs of posts are circumferentially spaced apart from each other by a plurality of closed cells of the uppermost row of closed cells;
- wherein the uppermost row of closed cells is formed partly by an uppermost, circumferentially extending row of angled struts of the frame interconnecting adjacent pairs of posts and by another circumferentially extending row of angled struts interconnecting adjacent pairs of posts;
- and
- wherein each pair of leaflet side portions extends radially outwardly through the opening of a respective pair of posts and is secured to the posts outside of the frame.
4 more elements
An implantable prosthetic valve, comprising:
- a radially collapsible and expandable annular frame comprising a plurality of struts and having an upper end and a lower end, wherein the struts are arranged to form a plurality of circumferentially extending rows of closed cells, including an uppermost row of closed cells defining the upper end of the frame and a lowermost row of closed cells defining the lower end, wherein the frame comprises a material selected from the group comprising stainless steel and a cobalt-chromium alloy;
- a leaflet structure positioned within the frame, the leaflet structure comprising a plurality of leaflets each comprising two opposing leaflet side portions, each of the leaflet side portions being paired with an adjacent leaflet side portion of an adjacent leaflet to form commissures of the leaflet structure, wherein each leaflet has a scalloped shaped lower edge portion extending from one side portion to the other side portion of the leaflet;
- a scalloped shaped fabric member stitched to the scalloped shaped lower edge portion of each leaflet;
- wherein the frame comprises a pair of posts adjacent each of the commissures, the posts of each pair being spaced apart from each other so as to define an opening therebetween, wherein the posts of each pair are connected to each other at their upper ends, wherein the pairs of posts have respective lower ends that are axially spaced from the lower end of the frame;
- wherein the pairs of posts are positioned axially along the frame entirely within the uppermost row of closed cells and the pairs of posts are circumferentially spaced apart from each other by a plurality of closed cells of the uppermost row of closed cells;
- wherein the uppermost row of closed cells is formed partly by an uppermost, circumferentially extending row of angled struts of the frame interconnecting adjacent pairs of posts and by another circumferentially extending row of angled struts that are connected to the lower ends of the posts;
- wherein each pair of leaflet side portions extends radially outwardly through the opening of a respective pair of posts and is secured to the posts outside of the frame;
- wherein the closed cells of the uppermost row are hexagonal cells having a length measured in an axial direction of the frame and a width measured in a circumferential direction of the frame, wherein the length is greater than the width.
5 more elements
Dependencies are inferred from the claim text.