Systems and methods for transcatheter treatment of valve regurgitation
The invention relates to a device for use in the transcatheter treatment of mitral valve regurgitation, specifically a coaptation assistance devices for implantation across the valve; a system including the coaptation enhancement element and anchors for implantation; a system including the coaptation enhancement element, and one or more of the following: transseptal sheath, anchor delivery catheter, implant delivery catheter, and clip delivery catheter; and methods for transcatheter implantation of a coaptation element across a heart valve.
1. An implant for treating mal-coaptation of a heart valve, the heart valve having an annulus and posterior and anterior leaflets with an open configuration and a closed configuration, the implant comprising:
a fixation ring comprising an expandable stent-like structure defining a height between upper peaks and lower peaks, wherein the fixation ring defines a lumen,
a body comprising a different material than the fixation ring, the body extending along a portion of the circumference of the fixation ring and protruding into the lumen, the body comprising a first surface disposed toward the posterior leaflet and a second surface disposed toward the anterior leaflet, wherein the second surface provides an atraumatic surface against which the anterior leaflet coapts, wherein the body is positioned entirely below the upper peaks of the fixation ring such that the upper peaks are uncovered by the body, wherein the body extends below the lower peaks of the fixation ring, wherein the body does not overlie a portion of the fixation ring, and
a posterior extension extending below the lower peaks of the fixation ring and forming an obtuse angle with the fixation ring, wherein the posterior extension has a bias that exerts a force and rests against tissue of a heart, wherein the posterior extension comprises a pre-determined curve, wherein the posterior extension extends downward, curves, and extends upward forming a generally U-shaped configuration.
2. The implant of claim 1 , wherein the expandable stent-like structure comprises a zigzag pattern of struts.
3. The implant of claim 1 , wherein the body comprises a foam.
4. The implant of claim 1 , wherein the body comprises ePTFE.
5. The implant of claim 1 , wherein the body is configured to extend beyond the posterior leaflet.
6. The implant of claim 1 , wherein the body tapers from a superior edge to an inferior edge.
7. The implant of claim 1 , wherein the posterior extension is configured to provide a force on the posterior leaflet.
8. The implant of claim 1 , further comprising one or more barbs.
9. An implant for treating mal-coaptation of a heart valve, the heart valve having an annulus and posterior and anterior leaflets with an open configuration and a closed configuration, the implant comprising:
a fixation ring comprising an expandable stent-like structure defining a height, wherein the fixation ring defines a lumen,
a body comprising a first surface disposed toward the posterior leaflet and a second surface disposed toward the anterior leaflet, wherein the second surface provides an atraumatic surface against which the anterior leaflet coapts;
a single body supporting ribbon configured to provide structural support to the body, wherein the single body supporting ribbon extends downward from the fixation ring, wherein the single body supporting ribbon comprises a pre-determined curve, wherein the body extends between the fixation ring and the single body supporting ribbon, wherein at least a portion of the circumference of the fixation ring is not covered by the body, wherein the body is not continuous with any other covering; and
a plurality of hooks extending from the frame, wherein the plurality of hooks extend only from the portion of the circumference of the fixation ring not covered by the body.
10. The implant of claim 9 , wherein the implant comprises a shape memory material.
11. The implant of claim 9 , wherein the implant comprises a foam.
12. The implant of claim 9 , wherein the implant comprises ePTFE, pericardium, or other biocompatible tissue.
13. The implant of claim 9 , wherein the fixation ring comprises a zigzag pattern of struts.
14. The implant of claim 9 , wherein the body tapers from a superior edge to an inferior edge.
15. An implant for treating mal-coaptation of a heart valve, the heart valve having an annulus and posterior and anterior leaflets with an open configuration and a closed configuration, the implant comprising:
a fixation ring comprising an expandable stent-like structure defining a height, wherein the fixation ring defines a lumen,
a coaptation assist body comprising a covering material having a first surface configured to be disposed toward the posterior leaflet and an opposed second surface configured to be disposed toward the anterior leaflet to allow the anterior leaflet to coapt with the coaptation assist body, the coaptation assist body forming a curved superior edge configured to be positioned along the annulus, the coaptation assist body extending from the curved superior edge toward a curved inferior edge, the curved inferior edge configured to be positioned along the posterior leaflet, the coaptation assist body having lateral sides tapering from the curved superior edge to the curved inferior edge;
a posterior support extending from the fixation ring, wherein the posterior support extends through an opening in the coaptation assist body such that a least a portion of the posterior support is surrounded, the posterior support comprising at least one curve, the posterior support movable from a first compressed configuration to a second expanded configuration, the posterior support configured to exert a force on the posterior leaflet to anchor the implant in place.
16. The implant of claim 15 , wherein the posterior support comprises a straight portion and a portion which curves in a posterior direction.
17. The implant of claim 15 , further comprising one or more barbs.
18. The implant of claim 15 , wherein the body comprises a foam.
19. The implant of claim 15 , wherein the body comprises ePTFE.
20. The implant of claim 15 , wherein the fixation ring comprises a zigzag pattern of struts.