System and method for cardiac valve repair and replacement
A prosthetic mitral valve includes a proximal anchor, a distal anchor, and a central portion therebetween. The proximal and distal anchors each include a first outer frame and a second outer frame. The first outer frame includes a plurality of first arcs joined together, and the second outer frame includes a plurality of second arcs joined together. The plurality of first arcs are out of phase relative to the plurality of second arcs.
1. A prosthetic mitral valve comprising:
a proximal anchor, a distal anchor, and a central portion therebetween;
wherein the proximal and distal anchors each comprise a first outer frame and a second outer frame,
the first outer frame comprising a plurality of first arcs joined together, and
the second outer frame comprising a plurality of second arcs joined together,
wherein the plurality of first arcs are out of phase relative to the plurality of second arcs in a plane transverse to a longitudinal axis of the prosthetic mitral valve.
2. The prosthetic mitral valve of claim 1 , wherein the first plurality of arcs are movable relative to the second plurality of arcs.
3. The prosthetic mitral valve of claim 1 , wherein the first and second outer frames are substantially circular.
4. The prosthetic mitral valve of claim 1 , wherein the plurality of first arcs are disposed around substantially the entire first outer frame, and wherein the plurality of second arcs are disposed around substantially the entire second outer frame.
5. The prosthetic mitral valve of claim 1 , wherein the plurality of first arcs lie substantially in a first plane, and wherein the plurality of second arcs lie substantially in an adjacent second plane.
6. The prosthetic mitral valve of claim 1 , wherein the first and second arcs are approximately 90 degrees out of phase.
7. The prosthetic mitral valve of claim 1 , wherein the first and second outer frames are made of wire rope.
8. The prosthetic mitral valve of claim 1 wherein the wire rope of the first outer frame has an opposite lay than a lay of the wire rope of the second outer frame.
9. The prosthetic mitral valve of claim 1 , wherein the proximal anchor and distal anchor are substantially parallel to one another.
10. The prosthetic mitral valve of claim 1 , wherein the central portion includes substructures connecting the proximal and distal anchors.
11. The prosthetic mitral valve of claim 10 , wherein the wherein the substructures are hexagonal.
12. The prosthetic mitral valve of claim 1 , wherein the proximal anchor, distal anchor, and central portion are configured to expand from a constrained configuration to an expanded configuration.
13. The prosthetic mitral valve of claim 12 , wherein the device is configured to foreshorten upon expansion of the proximal anchor, distal anchor, and central portion from the constrained configuration to the expanded configuration.
14. The prosthetic mitral valve of claim 1 , wherein the proximal anchor and the distal anchor each have a diameter in the expanded configuration that is greater than a diameter of the central portion in the expanded configuration.
15. A prosthetic mitral valve comprising:
a valve frame comprising a proximal anchor, a distal anchor, and a central portion therebetween, the valve frame configured to expand from a constrained configuration to an expanded configuration;
a plurality of struts attached to the central portion and extending distally past the distal anchor; and
a plurality of leaflets secured to the plurality of struts such that at least a portion of each leaflet extends distally past the distal anchor.
16. The prosthetic mitral valve of claim 15 , wherein the valve frame is configured to self-expand.
17. The prosthetic mitral valve of claim 15 , wherein the plurality of leaflets are further attached to the central portion.
18. The prosthetic mitral valve of claim 15 , wherein the plurality of leaflets comprise a biomaterial or a polymer.
19. The prosthetic mitral valve of claim 15 , wherein the proximal anchor is covered with a skirt configured to seal the prosthetic valve.
20. The prosthetic mitral valve of claim 19 , wherein the skirt comprises a biomaterial or polymer.
21. The prosthetic mitral valve of claim 15 , wherein an outer perimeter of the proximal anchor is substantially circular when covered with the skirt.
22. The prosthetic mitral valve of claim 15 , wherein the plurality of leaflets are arranged to fill an inner diameter of the mitral valve prosthetic.
23. The prosthetic mitral valve of claim 22 , wherein a ratio of the inner diameter to a height of the plurality of struts is approximately 2:1.
24. The prosthetic mitral valve of claim 15 , wherein the valve frame is configured to foreshorten upon expansion of the valve frame from the constrained configuration to the expanded configuration.
25. The prosthetic mitral valve of claim 15 , wherein the proximal anchor and the distal anchor each have a diameter in the expanded configuration that is greater than a diameter of the central portion in the expanded configuration.