Prosthetic heart valve
DC CAFCFirst Claim
1. An assembly for implanting a prosthetic heart valve in a patient'"'"'s body comprising:
- a delivery apparatus comprising an elongated shaft; and
a radially expandable prosthetic heart valve adapted to be mounted on the shaft in a radially collapsed configuration for delivery into the body, the prosthetic heart valve comprising an annular frame having an inflow end portion defining an inflow end of the frame that is configured to receive antegrade blood flow into the prosthetic heart valve when implanted, and the annular frame also having an outflow end portion defining an outflow end of the frame opposite the inflow end of the frame, the prosthetic heart valve also comprising a leaflet structure positioned within the frame, an inner fabric skirt positioned along an inner surface of the frame, and an outer fabric skirt extending from the inflow end of the frame along an outer surface of the frame to a frame attachment location;
wherein the frame is adapted to shorten axially during radial expansion of the prosthetic valve, thereby increasing axial slack in the outer fabric skirt; and
wherein the outer fabric skirt comprises an edge defining a plurality of alternating projections and notches that is attached to the frame at the frame attachment location.
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Accused Products
Abstract
Embodiments of a radially collapsible and expandable prosthetic heart valve are disclosed. A valve frame can have a tapered profile when mounted on a delivery shaft, with an inflow end portion having a smaller diameter than an outflow end portion. The valve can comprise generally V-shaped leaflets, reducing material within the inflow end of the frame. An outer skirt can be secured to the outside of the inflow end portion of the frame, the outer skirt having longitudinal slack when the valve is expanded and lying flat against the frame when the valve is collapsed. A diagonally woven inner skirt can elongate axially with the frame. Side tabs of adjacent leaflets can extend through and be secured to window frame portions of the frame to form commissures. The window frame portions can be depressed radially inward relative to surrounding frame portions when the valve is crimped onto a delivery shaft.
370 Citations
25 Claims
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1. An assembly for implanting a prosthetic heart valve in a patient'"'"'s body comprising:
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a delivery apparatus comprising an elongated shaft; and a radially expandable prosthetic heart valve adapted to be mounted on the shaft in a radially collapsed configuration for delivery into the body, the prosthetic heart valve comprising an annular frame having an inflow end portion defining an inflow end of the frame that is configured to receive antegrade blood flow into the prosthetic heart valve when implanted, and the annular frame also having an outflow end portion defining an outflow end of the frame opposite the inflow end of the frame, the prosthetic heart valve also comprising a leaflet structure positioned within the frame, an inner fabric skirt positioned along an inner surface of the frame, and an outer fabric skirt extending from the inflow end of the frame along an outer surface of the frame to a frame attachment location; wherein the frame is adapted to shorten axially during radial expansion of the prosthetic valve, thereby increasing axial slack in the outer fabric skirt; and wherein the outer fabric skirt comprises an edge defining a plurality of alternating projections and notches that is attached to the frame at the frame attachment location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An assembly for implanting a prosthetic heart valve in a patient'"'"'s body comprising:
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a delivery apparatus comprising an elongated shaft; a radially expandable and collapsible prosthetic heart valve mounted on the shaft in a radially collapsed configuration for delivery into the body, the prosthetic heart valve comprising an annular frame and a leaflet structure within the frame; wherein the frame comprises a plurality of angularly spaced commissure windows each comprising an enclosed opening between first and second axially oriented side struts, and the frame further comprises intermediate side struts that are axially oriented and positioned angularly between the commissure windows, and the leaflet structure comprises a plurality of commissure portions that extend outwardly through respective commissure windows to locations outside of the frame; and wherein the commissure windows are depressed radially inwardly relative to the intermediate side struts when the prosthetic heart valve is radially collapsed on the shaft, such that an outermost surface of each commissure portion of the leaflet structure outside of the frame is at substantially the same radial distance from a longitudinal center axis of the prosthetic heart valve as outer surfaces of the intermediate side struts. - View Dependent Claims (13, 14, 15, 16)
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17. An implantable prosthetic valve that is radially collapsible to a collapsed configuration and radially expandable to an expanded configuration, the prosthetic valve comprising:
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an annular frame having a longitudinal axis extending between an inflow end of the frame and an outflow end of the frame and defining an axial direction, the inflow end of the frame being configured to receive antegrade blood flow into the prosthetic valve when implanted; a leaflet structure positioned within the frame; and an annular outer skirt positioned around an outer surface of the frame, the outer skirt comprising an inflow edge positioned at a first location at the inflow end of the frame, an outflow edge defining a plurality of spaced apart axial projections that are secured to the frame at a second location axially spaced from the inflow edge, and an intermediate portion extending between the inflow edge and the outflow edge and positioned outside of the frame; wherein when the valve is in the expanded configuration, the intermediate portion of the outer skirt comprises slack in the axial direction between the inflow edge of the outer skirt and the outflow edge of the outer skirt, and when the valve is collapsed to the collapsed configuration, the distance between the inflow edge of the outer skirt and the outflow edge of the outer skirt increases, reducing the slack in the outer skirt in the axial direction. - View Dependent Claims (18, 19)
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20. An implantable prosthetic valve comprising:
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an annular frame comprising a plurality of leaflet attachment portions; and a leaflet structure positioned within the frame and secured to the leaflet attachment portions of the frame, the leaflet structure comprising a plurality of leaflets, each leaflet comprising a body portion having a free outflow edge, two opposing primary side tabs extending from opposite sides of the body portion, and two opposing secondary tabs, each secondary tab extending from the body portion adjacent to a respective primary side tab, the secondary tabs extending from the body portion at opposite ends of the free outflow edge; wherein the secondary tabs are folded about radially extending creases that extend radially from the opposite ends of the free outflow edge, such that a first portion of the secondary tabs lies flat against the body portion of the respective leaflet, and the secondary tabs are folded about axially extending creases such that a second portion of the secondary tabs extends in a different plane than the first portion, wherein the radially extending creases and the axially extending creases are non-parallel. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification