Leaflet attachment frame for a prosthetic valve
First Claim
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1. An assembly comprising:
- a balloon catheter comprising an inflatable balloon; and
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;
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 vertical posts adjacent each of the commissures, the vertical posts of each pair being parallel to each other and spaced apart from each other so as to define an opening therebetween, wherein the vertical posts of each pair are connected to each other at their upper ends, wherein the pairs of vertical posts have respective lower ends that are axially spaced from the lower end of the frame;
wherein the pairs of vertical posts are positioned axially along the frame entirely within the uppermost row of closed cells and the pairs of vertical posts are circumferentially spaced apart from each other by a plurality of cells of the uppermost row of closed cells;
wherein each pair of leaflet side portions extends radially outwardly through the opening of a respective pair of vertical posts and are secured to the posts outside of the frame; and
wherein the prosthetic valve can be crimped around the balloon for delivery into a patient'"'"'s body and radially expanded at a treatment site within the patient'"'"'s body by inflating the balloon.
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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.
296 Citations
17 Claims
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1. An assembly comprising:
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a balloon catheter comprising an inflatable balloon; and 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; 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 vertical posts adjacent each of the commissures, the vertical posts of each pair being parallel to each other and spaced apart from each other so as to define an opening therebetween, wherein the vertical posts of each pair are connected to each other at their upper ends, wherein the pairs of vertical posts have respective lower ends that are axially spaced from the lower end of the frame; wherein the pairs of vertical posts are positioned axially along the frame entirely within the uppermost row of closed cells and the pairs of vertical posts are circumferentially spaced apart from each other by a plurality of cells of the uppermost row of closed cells; wherein each pair of leaflet side portions extends radially outwardly through the opening of a respective pair of vertical posts and are secured to the posts outside of the frame; and wherein the prosthetic valve can be crimped around the balloon for delivery into a patient'"'"'s body and radially expanded at a treatment site within the patient'"'"'s body by inflating the balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An assembly comprising:
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a balloon catheter comprising an inflatable balloon; and 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; 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 vertical posts adjacent each of the commissures, the vertical posts of each pair being parallel to each other and spaced apart from each other so as to define an opening therebetween, wherein the vertical posts of each pair are connected to each other at their upper ends, wherein the pairs of vertical posts have respective lower ends that are axially spaced from the lower end of the frame; wherein the pairs of vertical posts are positioned axially along the frame entirely within the uppermost row of closed cells and the pairs of vertical posts are circumferentially spaced apart from each other by a plurality of 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 vertical posts and another circumferentially extending row of angled struts that are connected to the lower ends of the vertical posts; wherein each pair of leaflet side portions extends radially outwardly through the opening of a respective pair of vertical posts and are secured to the posts outside of the frame; and wherein the prosthetic valve can be crimped around the balloon for delivery into a patient'"'"'s body and radially expanded at a treatment site within the patient'"'"'s body by inflating the balloon. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An assembly comprising:
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a balloon catheter comprising an inflatable balloon; and 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, titanium, 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 vertical posts adjacent each of the commissures, the vertical posts of each pair being parallel to each other and spaced apart from each other so as to define an opening therebetween, wherein the vertical posts of each pair are connected to each other at their upper ends, wherein the pairs of vertical posts have respective lower ends that are axially spaced from the lower end of the frame; wherein the pairs of vertical posts are positioned axially along the frame entirely within the uppermost row of closed cells and the pairs of vertical posts are circumferentially spaced apart from each other by a plurality of 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 vertical posts and another circumferentially extending row of angled struts that are connected to the lower ends of the vertical posts; wherein each pair of leaflet side portions extends radially outwardly through the opening of a respective pair of vertical posts and are secured to the posts outside of the frame; wherein the leaflets have scalloped shaped lower edge portions that are sutured to fabric portions that are sutured to the frame; wherein the opening of each pair of vertical posts has a constant width; wherein the cells of the uppermost row of closed cells 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; and wherein the prosthetic valve can be crimped around the balloon for delivery into a patient'"'"'s body and radially expanded at a treatment site within the patient'"'"'s body by inflating the balloon.
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Specification