US 10,537,423 B2 · Prosthetic heart valve

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.

Claims20

Dependent claims

An implantable prosthetic valve that is radially collapsible to a collapsed configuration and radially expandable to an expanded configuration, the prosthetic valve comprising:

an annular frame;
a leaflet structure positioned within the frame;
an inner skirt positioned along an inner surface of the frame, the inner skirt being secured to the inside of the frame;
wherein the inner skirt comprises a weave of a first set of strands with a second set of strands, both the first and second sets of strands being non-parallel with an axial direction of the valve;
wherein when the valve is collapsed from the expanded configuration to the collapsed configuration, both the first and second sets of strands rotate toward the axial direction of the valve, allowing the inner skirt to elongate in the axial direction along with the frame;
and
an outer fabric skirt extending from an inflow end of the frame along an outer surface of the frame, wherein the outer fabric skirt comprises an outflow edge defining a plurality of alternating projections and notches, wherein the projections project further toward an outflow end of the frame relative to the notches, the outflow edge is attached to the frame at the projections, and the outflow edge is free from the frame at the notches.

4 more elements

An implantable prosthetic valve that is radially collapsible to a collapsed configuration and radially expandable to an expanded configuration, the prosthetic heart valve comprising:

a radially expandable 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 within a patient's body in the expanded configuration, and the annular frame also having an outflow end portion defining an outflow end of the frame opposite the inflow end of the frame;
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, wherein the outer fabric skirt comprises an outflow edge defining a plurality of alternating projections and notches, the projections projecting further toward the outflow end of the frame relative to the notches, the outflow edge is attached to the frame at the projections, and the outflow edge is free from the frame at the notches.

2 more elements

Dependencies are inferred from the claim text.

Prosthetic heart valve

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Prosthetic heart valve

Life of this patent

Abstract

Claims20