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 method of delivering a coaptation assistance element for treating mal-coaptation of a heart valve, the heart valve having an annulus, the method comprising:
positioning an implant delivery system relative to a primary anchor location, the implant delivery system comprising a primary anchor housing disposed relative to a hub of a coaptation assistance element, the coaptation assistance element comprising a first surface and an opposed second surface, each surface bounded by a first lateral edge, a second lateral edge, an inferior edge, and a superior edge;
rotating a primary anchor driver relative to the primary anchor housing to engage a primary anchor with the annulus at the primary anchor location; and
delivering a secondary anchor to a secondary anchor location, the secondary anchor guided by a secondary anchor guide rail toward the secondary anchor location after the primary anchor engages the annulus.
2. The method of claim 1 , further comprising releasing the primary anchor housing from the hub after the primary anchor engages the annulus.
3. The method of claim 2 , further comprising withdrawing a release wire to release the primary anchor housing from the hub.
4. The method of claim 1 , further comprising sliding the secondary anchor guide rail along a secondary anchor tether toward the secondary anchor location.
5. The method of claim 1 , further comprising sliding the secondary anchor guide rail toward a radiopaque marker.
6. The method of claim 1 , further comprising rotating the secondary anchor to engage the annulus at the secondary anchor location.
7. The method of claim 1 , further comprising guiding the trajectory of the secondary anchor with the secondary anchor guide rail.
8. The method of claim 1 , further comprising changing the orientation of the secondary anchor guide rail to change the trajectory of the secondary anchor.
9. The method of claim 1 , wherein rotating the primary anchor driver relative to the primary anchor housing does not comprise translating the primary anchor driver relative to the primary anchor housing.
10. The method of claim 1 , wherein delivering the secondary anchor to the secondary anchor location comprises sliding the secondary anchor such that coils of the secondary anchor surround the secondary anchor guide rail.
11. The method of claim 1 , wherein the secondary anchor guide rail comprises a distal section with a bend between 30 and 90 degrees.
12. The method of claim 11 , wherein the bend determines the trajectory of a secondary anchor delivered along the secondary anchor guide rail.
13. The method of claim 1 , wherein the secondary anchor guide rail extends through a passageway through a middle of a helical wire of the secondary anchor.
14. The method of claim 1 , further comprising sliding the secondary anchor guide rail over a radiopaque marker before delivering the secondary anchor.
15. A method of delivering a coaptation assistance element for treating mal-coaptation of a heart valve, the heart valve having an annulus, the method comprising:
positioning an implant delivery system relative to a primary anchor location, the implant delivery system comprising a primary anchor housing disposed relative to a hub of a coaptation assistance element, the coaptation assistance element comprising a first surface and an opposed second surface, each surface bounded by a first lateral edge, a second lateral edge, an inferior edge, and a superior edge;
rotating a primary anchor driver relative to the hub to engage a primary anchor with the annulus at the primary anchor location; and
rotating a secondary anchor driver relative to the coaptation assistance element to engage a secondary anchor with the annulus at a secondary anchor location.
16. The method of claim 15 , further comprising determining an anchoring depth of the secondary anchor from a radiopaque marker.
17. The method of claim 15 , further comprising delivering another secondary anchor to another secondary anchor location, the secondary anchor locations diametrically opposed to the hub.
18. The method of claim 15 , further comprising delivering another secondary anchor to another secondary anchor location, the secondary anchor locations different distances from the hub.
19. The method of claim 15 , wherein delivering the secondary anchor to the secondary anchor location comprises delivering four secondary anchors to four secondary anchor locations.
20. A method of delivering a coaptation assistance element for treating mal-coaptation of a heart valve, the heart valve having an annulus, the method comprising:
positioning an implant delivery system relative to a primary anchor location, the implant delivery system comprising a primary anchor housing disposed relative to a hub of a coaptation assistance element, the coaptation assistance element comprising a first surface and an opposed second surface, each surface bounded by a first lateral edge, a second lateral edge, an inferior edge, and a superior edge;
rotating a primary anchor driver relative to the primary anchor housing and the hub, wherein rotating the primary anchor driver rotates a primary anchor into engagement with the annulus at the primary anchor location; and
releasing the primary anchor housing from the hub after the primary anchor engages the annulus.