Valve docking devices, systems and methods
Various systems, devices and methods associated with the placement of a dock or anchor for a prosthetic valve. The anchor can comprise a plurality of coils adapted to support a valve prosthesis, the plurality of coils including an upper coil, one or more middle coils, and a lower coil. The upper coil can have a larger diameter than the one or more middle coils and the lower coil, and the upper coil is configured to engage a wall of an atrium of the heart at a position superior to and spaced axially from the mitral valve annulus after the plurality of coils have been fully delivered from the coil guide catheter.
1. A helical anchor for docking a mitral valve prosthesis, the helical anchor adapted to be received in and delivered from a coil guide catheter and comprising:
a plurality of coils having a preformed, coiled configuration after being delivered from the coil guide catheter and adapted to support the mitral valve prosthesis upon being fully delivered from the coil guide catheter and implanted with coil portions above and below a mitral valve annulus of a native mitral valve of a heart, wherein the plurality of coils comprises an upper coil, one or more middle coils, and a lower coil, wherein the upper coil has a larger diameter than the one or more middle coils and the lower coil, and wherein the upper coil is configured to engage a wall of an atrium of the heart at a position superior to and spaced axially from the mitral valve annulus after the plurality of coils have been fully delivered from the coil guide catheter.
2. The helical anchor of claim 1 , wherein the helical anchor comprises a solid wire.
3. The helical anchor of claim 1 , wherein the helical anchor comprises a hollow wire configured to be delivered over a guide wire.
4. The helical anchor of claim 1 , wherein the one or more middle coils and the lower coil are configured to be positioned below the mitral valve annulus in a ventricle of the heart, after being delivered from the coil guide catheter.
5. A system comprising:
a prosthetic heart valve that is radially expandable; and
an anchor for docking the prosthetic heart valve, the anchor comprising a plurality of helical coils transitionable to a straightened configuration to be held in a coil guide catheter;
wherein the plurality of helical coils is adapted to support the prosthetic heart valve upon being fully delivered from the coil guide catheter at a native heart valve of a heart and implanted with respective portions above and below a native heart valve annulus of the native heart valve, wherein the plurality of helical coils includes a lower portion comprising a plurality of lower coils and an upper portion comprising at least one upper coil, wherein the upper portion is adapted to be placed above the native heart valve annulus and wherein the plurality of lower coils is configured to encircle heart valve leaflets of the native heart valve; and
wherein the at least one upper coil is configured to engage a wall of an atrium of the heart at a position spaced away from the native heart valve annulus after being delivered from the coil guide catheter, and wherein the at least one upper coil extends beyond an inflow end of a frame of the prosthetic heart valve when the prosthetic heart valve is docked within the anchor.
6. The system of claim 5 , wherein the at least one upper coil has a diameter that is larger than a largest diameter of the plurality of lower coils when the prosthetic heart valve is docked within the anchor.
7. The system of claim 5 , wherein the plurality of lower coils includes a plurality of middle coils and a lower coil.
8. The system of claim 7 , wherein an outflow end of the frame of the prosthetic heart valve extends beyond the lower coil when the prosthetic heart valve is docked within the anchor.
9. The system of claim 5 , wherein the prosthetic heart valve is balloon expandable.
10. The system of claim 5 , wherein the plurality of lower coils is configured such that, when the prosthetic heart valve is docked within the anchor, the heart valve leaflets of the native heart valve are secured between the plurality of lower coils and the prosthetic heart valve, and such that the anchor and the prosthetic heart valve are locked in place relative to the heart valve leaflets.
11. A system comprising:
a prosthetic heart valve comprising a frame that is radially expandable from a collapsed configuration to an expanded configuration, the frame having an inflow end and an outflow end; and
an anchor for docking the prosthetic heart valve, the anchor adapted to be held in a delivery catheter in an elongated configuration and delivered from the delivery catheter, and the anchor comprising an upper coil and a plurality of lower coils after being delivered from the delivery catheter, the plurality of lower coils adapted to support the prosthetic heart valve upon being fully delivered from the delivery catheter and implanted at a native heart valve of a heart, and the upper coil adapted to engage a wall of an atrium of the heart;
wherein the upper coil is adapted to be spaced axially from a native heart valve annulus of the native heart valve and, when the prosthetic heart valve is docked within the anchor, the upper coil extends axially beyond the inflow end of the frame of the prosthetic heart valve; and
wherein the plurality of lower coils is adapted to be placed below the native heart valve annulus of the native heart valve such that the plurality of lower coils encircle native leaflets of the native heart valve and, when the prosthetic heart valve is docked within the anchor, the native leaflets are secured between the plurality of lower coils and the prosthetic heart valve.
12. The system of claim 11 , wherein the outflow end of the frame of the prosthetic heart valve extends beyond a lower coil of the plurality of lower coils when the prosthetic heart valve is docked within the anchor.
13. The system of claim 11 , wherein the native leaflets are native mitral valve leaflets of a native mitral valve and wherein the plurality of lower coils are configured to encircle the native mitral valve leaflets such that an anterior leaflet is prevented from obstructing a native aortic valve.
14. The system of claim 11 , wherein multiple coils of the plurality of lower coils have a same diameter.
15. The system of claim 11 , wherein a diameter of the upper coil is larger than a diameter of each coil of the plurality of lower coils.
16. The system of claim 11 , wherein the upper coil is configured as a tail-like extension that is formed as an enlarged diameter coil relative to a next adjacent coil of the anchor.
17. The system of claim 11 , wherein the plurality of lower coils includes two or more middle coils and a lower coil and wherein the upper coil has a first diameter and the lower coil has a second diameter, the first diameter larger than the second diameter.
18. The system of claim 11 , wherein the anchor comprises a solid wire.