Heart valve sealing devices and delivery devices therefor
An exemplary valve repair device for repairing a native valve of a patient includes: a strip of material; a coaption element formed from the strip of material; a pair of paddles formed from the strip of material and connected to the coaption element; a cap attached to the paddles; and a pair of extension members connected to the cap and movable between an open position and a closed position. The paddles are movable between an open position and a closed position and are configured to attach to the native valve of the patient. Movement of the cap toward the coaption element causes the pair of paddles to move to the closed position, and movement of the cap away from the coaption element causes the pair of paddles to move to the open position. In the closed position the extension members are biased in a closing direction.
1. A valve repair device for repairing a native valve of a patient, the valve repair device comprising:
a strip of material comprising metal strands that are woven together;
a coaption element formed from the strip of material;
a pair of paddles formed from the strip of material and connected to the coaption element, wherein the paddles are movable between an open position and a closed position, and are configured to attach to the native valve of the patient;
a cap attached to the paddles, wherein movement of the cap toward the coaption element causes the pair of paddles to move to the closed position, and movement of the cap away from the coaption element causes the pair of paddles to move to the open position; and
a pair of extension members connected to the cap and movable between an open position and a closed position, wherein in the closed position the extension members are biased in a closing direction.
2. The valve repair device of claim 1 , wherein the extension members do not overlap while in the closed position.
3. The valve repair device of claim 1 , wherein the extension members are movable in the closing direction beyond the closed position to a pre-loading position.
4. The valve repair-device of claim 3 , wherein at least a portion of each of the extension members overlaps the other extension member of the pair of extension members in the pre-loading position.
5. The valve repair device of claim 1 , wherein the extension members are shape-set in a pre-loading position and the extension members are moved in the closing direction beyond the closed position to the pre-loading position.
6. The valve repair-device of claim 5 , wherein at least a portion of each of the extension members overlaps the other extension member of the pair of extension members in the pre-loading position.
7. The valve repair device of claim 6 , wherein ends of the extension members do not overlap.
8. The valve repair device of claim 1 , wherein the extension members comprise hoops.
9. The valve repair device of claim 8 , wherein the extension members are moved in the closing direction beyond the closed position to a pre-loading position.
10. The valve repair device of claim 8 , wherein the extension members are shape-set in a pre-loading position, wherein the hoops interlock in the pre-loading position.
11. The valve repair device of claim 1 , wherein the paddles comprise an inner paddle portion and an outer paddle portion.
12. The valve repair device of claim 1 , wherein the paddles are disposed over the extension members.
13. The valve repair device of claim 1 , wherein the extension members are formed from a shape-memory alloy.
14. The valve repair device of claim 1 , further comprising a base assembly that comprises:
a collar; and
a shaft that extends through the collar and is attached to the cap such that the cap can be moved by the shaft away from the collar;
wherein movement of the cap toward the collar causes the pair of paddles to move to the closed position, and movement of the cap away from the collar causes the pair of paddles to move to the open position.
15. The valve repair device of claim 1 , wherein the coaption element is configured to close a gap in the native valve of the patient when the valve repair device is attached to the native valve.
16. The valve repair device of claim 1 , wherein the biasing of the extension members in the closing direction is due to shape setting of the extension members beyond the closed position.
17. A valve repair device for repairing a native valve of a patient, the valve repair device comprising:
a strip of material comprising an electrospun material;
a coaption element formed from the strip of material;
a pair of paddles formed from the strip of material and connected to the coaption element, wherein the paddles are movable between an open position and a closed position, and are configured to attach to the native valve of the patient;
a cap attached to the paddles, wherein movement of the cap toward the coaption element causes the pair of paddles to move to the closed position, and movement of the cap away from the coaption element causes the pair of paddles to move to the open position; and
a pair of extension members connected to the cap and movable between an open position and a closed position, wherein in the closed position the extension members are biased in a closing direction.
18. The valve repair device of claim 17 , wherein the strip of material comprises electrospun metal fibers.
19. The valve repair device of claim 17 , wherein the paddles comprise an inner paddle portion and an outer paddle portion.
20. The valve repair device of claim 17 , wherein the paddles are disposed over the extension members.
21. A valve repair system for repairing a native valve of a patient during a non-open heart procedure, the valve repair system comprising:
a delivery device having at least one lumen; and
a valve repair device configured to be delivered through the lumen of the delivery device, and configured to attach to the native valve of the patient, the valve repair device comprising:
a strip of material, wherein the strip of material is selected from the group consisting of metal strands that are woven together and an electrospun material;
a coaption element formed from the strip of material;
a pair of paddles formed from the strip of material and connected to the coaption element, wherein the paddles are movable between an open position and a closed position, and are configured to attach to the native valve of the patient;
a cap attached to the paddles, wherein movement of the cap toward the coaption element causes the pair of paddles to move to the closed position, and movement of the cap away from the coaption element causes the pair of paddles to move to the open position; and
a pair of extension members connected to the cap and movable between an open position and a closed position, wherein in the closed position the extension members are biased in a closing direction.