Replacement cardiac valves and methods of use and manufacture
Prosthetic mitral valves and their methods of manufacture and use.
1. A replacement mitral valve, comprising:
a self-expandable anchor comprising a ventricular anchor, a central portion comprising a plurality of apertures therethrough that are disposed around the central portion, and an atrial anchor, the self-expandable anchor having a self-expanded configuration in which the ventricular anchor and the atrial anchor are flared radially outward relative to the central portion such that the replacement mitral valve is configured to be secured within a mitral valve orifice;
an annular strut frame comprising a plurality of apertures therethrough around the strut frame, the strut frame disposed radially within the central portion, each of the plurality of annular strut frame apertures aligned with one of the plurality of central portion apertures to form a plurality of pairs of apertures;
a plurality of couplers, each coupler extending through one of the pairs of aligned apertures to fasten the annular strut frame to the central portion; and
a plurality of replacement leaflets secured to the annular strut frame.
2. The replacement mitral valve of claim 1 wherein the strut frame comprises a plurality of struts extending distally from a frame portion of the strut frame and distally from the central portion.
3. The replacement mitral valve of claim 2 wherein the strut frame comprises a plurality of strut arches, wherein at least one strut arch is disposed between each of the adjacent struts.
4. The replacement mitral valve of claim 1 , wherein at least some of the plurality of couplers are configured to allow for movement in at least one direction between the central portion and the annular strut frame at locations of the pairs of aligned apertures.
5. The replacement mitral valve of claim 1 , wherein the plurality of couplers comprises a plurality of rivets.
6. The replacement mitral valve of claim 2 , wherein the plurality of struts are integral with the frame portion.
7. The replacement mitral valve of claim 2 , wherein each of the plurality of struts forms a substantially triangular shape.
8. The replacement mitral valve of claim 2 , wherein each of the plurality of struts includes a plurality of diamond-shaped cells therein.
9. The replacement mitral valve of claim 1 , wherein the central portion and the annular strut frame are configured to flex relative to one another.
10. The replacement mitral valve of claim 1 , wherein the annular strut frame is configured to reduce torquing and deformation of the replacement valve.
11. The replacement mitral valve of claim 1 , wherein the annular strut frame is configured to self-expand from a constrained configuration to an expanded configuration.
12. The replacement mitral valve of claim 11 , wherein the replacement valve is configured to foreshorten upon expansion of the anchor assembly from the constrained configuration to the expanded configuration.