Low Profile Transcatheter Heart Valve
First Claim
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1. An implantable prosthetic valve, comprising:
- a radially collapsible and expandable annular frame, the frame having three commissure attachment posts and three rows of circumferential struts extending between the commissure attachment posts, a first row of circumferential struts defining an inflow end of the frame and second and third rows of circumferential struts spaced apart from the first row adjacent an outflow end of the frame, the first row connected to the second and third rows by a plurality of axial struts, each row of circumferential struts comprising angled struts arranged in a zig-zag pattern and interconnected by generally U-shaped crown structure for improved collapsibility;
a leaflet structure comprising three leaflets formed of pericardial tissue, each leaflet having an upper edge, a curved lower edge and two side flaps, wherein each side flap is secured to an adjacent side flap of another leaflet to form commissures of the leaflet structure, each commissure being attached to one of the commissure attachment posts;
an annular skirt member positioned between the annular frame and the leaflet structure, the curved lower edge of each leaflet sutured to an inner surface of the skirt member along a scalloped line; and
a pair of reinforcing bars positioned adjacent each commissure attachment post, each reinforcing bar comprising a plurality of holes, wherein each side flap extends around a reinforcing bar and each reinforcing bar is sutured to a commissure attachment post for reinforcing the attachments between the leaflet structure and the commissure attachment posts.
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Abstract
An implantable prosthetic valve, according to one embodiment, comprises a frame, a leaflet structure, and a skirt member. The frame can have a plurality of axial struts interconnected by a plurality of circumferential struts. The leaflet structure comprises a plurality of leaflets (e.g., three leaflets arrange to form a tricuspid valve). The leaflet structure has a scalloped lower edge portion secured to the frame. The skirt member can be disposed between the leaflet structure and the frame.
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Citations
20 Claims
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1. An implantable prosthetic valve, comprising:
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a radially collapsible and expandable annular frame, the frame having three commissure attachment posts and three rows of circumferential struts extending between the commissure attachment posts, a first row of circumferential struts defining an inflow end of the frame and second and third rows of circumferential struts spaced apart from the first row adjacent an outflow end of the frame, the first row connected to the second and third rows by a plurality of axial struts, each row of circumferential struts comprising angled struts arranged in a zig-zag pattern and interconnected by generally U-shaped crown structure for improved collapsibility; a leaflet structure comprising three leaflets formed of pericardial tissue, each leaflet having an upper edge, a curved lower edge and two side flaps, wherein each side flap is secured to an adjacent side flap of another leaflet to form commissures of the leaflet structure, each commissure being attached to one of the commissure attachment posts; an annular skirt member positioned between the annular frame and the leaflet structure, the curved lower edge of each leaflet sutured to an inner surface of the skirt member along a scalloped line; and a pair of reinforcing bars positioned adjacent each commissure attachment post, each reinforcing bar comprising a plurality of holes, wherein each side flap extends around a reinforcing bar and each reinforcing bar is sutured to a commissure attachment post for reinforcing the attachments between the leaflet structure and the commissure attachment posts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An implantable prosthetic valve, comprising:
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a radially collapsible and expandable annular frame, the frame having three commissure attachment posts and at least three rows of circumferential struts extending between the commissure attachment posts, a first row of circumferential struts defining an inflow end of the frame and second and third rows of circumferential struts spaced apart from the first row adjacent an outflow end of the frame, the first row connected to the second and third rows by a plurality of axial struts; a leaflet structure comprising three leaflets formed of pericardial tissue, each leaflet having an upper edge, a curved lower edge and two side flaps, wherein each side flap is secured to an adjacent side flap of another leaflet to form commissures of the leaflet structure, each commissure being attached to one of the commissure attachment posts; an annular skirt member positioned between the annular frame and the leaflet structure, the curved lower edge of each leaflet sutured to an inner surface of the skirt member along a scalloped line; and a reinforcing strip secured to an inner surface of the leaflet structure adjacent its curved lower edge such that the leaflets are sandwiched between the annular skirt member and the reinforcing strip. - View Dependent Claims (15, 16, 17)
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18. An implantable prosthetic valve, comprising:
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a radially collapsible and expandable annular frame, the frame having three commissure attachment posts and at least three rows of circumferential struts extending between the commissure attachment posts, a first row of circumferential struts defining an inflow end of the frame and second and third rows of circumferential struts spaced apart from the first row adjacent an outflow end of the frame, the first row connected to the second and third rows by a plurality of axial struts, each row of circumferential struts comprising angled struts arranged in a zig-zag pattern defining a plurality of apexes; a leaflet structure comprising three leaflets formed of pericardial tissue, each leaflet having an upper edge, a curved lower edge and two side flaps, wherein each side flap is secured to an adjacent side flap of another leaflet to form commissures of the leaflet structure, each commissure being sutured to one of the commissure attachment posts via sutures extending through apertures in the commissure attachment posts, wherein all of the apertures are located along the length of the frame between a first plane that is perpendicular to the length and defined by the apexes of the second row of circumferential struts and a second plane that is perpendicular to the length and defined by the apexes of the third row of circumferential struts; and an annular skirt member positioned between the annular frame and the leaflet structure, the curved lower edge of each leaflet sutured to an inner surface of the skirt member along a scalloped line. - View Dependent Claims (19, 20)
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Specification