Device, system, and method for transcatheter treatment of valvular regurgitation
The invention relates to a device for use in the transcatheter treatment of mitral valve regurgitation, specifically a coaptation assistance element for implantation across the valve; a system including the coaptation assistance element and anchors for implantation; a system including the coaptation assistance element and delivery catheter; and a method for transcatheter implantation of a coaptation element across a heart valve.
1. A coaptation assistance element for treating mal-coaptation of a heart valve of a heart, the coaptation assistance element comprising:
a first coaptation surface and an opposed second surface;
a first lateral edge, a second lateral edge, an inferior edge, and a superior edge;
a hub spaced inward from each of the first lateral edge, the second lateral edge, the inferior edge, and the superior edge; and
an active anchor configured to couple to the hub and configured to be rotated relative to the hub to selectively deploy the active anchor at a first target location; and
a plurality of struts spaced around the hub and extending outward from the hub, the plurality of struts comprising at least a first strut configured to be implanted within the heart and a second strut configured to be implanted within the heart such that the first coaptation surface coapts with a first leaflet of the heart valve and the opposed second surface overlays a second leaflet of the heart valve.
2. The coaptation assistance element of claim 1 , wherein the second strut has a total length that is longer than a total length of the first strut.
3. The coaptation assistance element of claim 1 , wherein the hub is an annular hub.
4. The coaptation assistance element of claim 1 , further comprising a covering overlying a portion of the plurality of struts.
5. The coaptation assistance element of claim 4 , wherein at least one strut of the plurality of struts has a sharpened tip extending from the covering.
6. The coaptation assistance element of claim 1 , further comprising a suture, wherein the suture is configured collapse the coaptation assistance element.
7. The coaptation assistance element of claim 1 , wherein the plurality of struts comprise Nitinol.
8. The coaptation assistance element of claim 1 , further comprising one or more additional anchors.
9. The coaptation assistance element of claim 1 , further comprising a radiopaque marker.
10. The coaptation assistance element of claim 1 , wherein the hub is configured to extend upward from an annulus of the heart valve.
11. The coaptation assistance element of claim 1 , wherein the hub and the plurality of struts are formed from a tube.
12. The coaptation assistance element of claim 1 , wherein the plurality of struts and the hub are integrally formed.
13. A coaptation assistance element for treating mal-coaptation of a heart valve of a heart, the coaptation assistance element comprising:
a first coaptation surface and an opposed second surface;
a first lateral edge, a second lateral edge, an inferior edge, and a superior edge;
a hub;
an anchor configured to be coupled to the hub, the anchor configured to be rotated in a first direction relative to the hub to engage a tissue at a first target location, the anchor configured to be rotated in a second direction, opposite the first direction, relative to the hub to selectively disengage the tissue at the first target location; and
a plurality of struts extending outward from the hub, the plurality of struts comprising at least a first strut configured to be implanted within the heart superior to the heart valve and a second strut configured to be implanted within the heart and traversing the heart valve.
14. The coaptation assistance element of claim 13 , wherein two struts of the plurality of struts have different lengths.
15. The coaptation assistance element of claim 13 , wherein at least one strut of the plurality of struts is bifurcated.
16. The coaptation assistance element of claim 13 , wherein at least one strut of the plurality of struts comprise an eyelet.
17. The coaptation assistance element of claim 13 , wherein at least one strut of the plurality of struts comprise a barb configured to be secured to a leaflet.
18. The coaptation assistance element of claim 13 , wherein at least one strut of the plurality of struts comprise a portion configured to increase flexibility of the strut.
19. The coaptation assistance element of claim 13 , further comprising a covering coupled to the plurality of struts.
20. A coaptation assistance element for treating mal-coaptation of a heart valve of a heart, the heart valve having an annulus, the coaptation assistance element comprising:
a first coaptation surface and an opposed second surface;
a first lateral edge, a second lateral edge, an inferior edge, and a superior edge;
a hub;
an annular anchor configured to be coupled to the hub and configured to be rotated relative to the hub to selectively deploy the annular anchor at a first target location, wherein the hub is configured to remain stationary as the annular anchor is rotated to engage tissue; and
a plurality of struts spaced around the hub and extending outward from the hub, the plurality of struts comprising at least a first strut configured to be implanted within the heart and a second strut configured to be implanted within the heart to position the annular anchor near the annulus.