Heart valve sealing devices and delivery devices therefor
An exemplary valve repair device for repairing a native valve of a patient includes: a coaption element having four layers; and a pair of paddles connected to the coaption element. The paddles are movable between an open position and a closed position and are configured to attach to the native valve of the patient.
1. A valve repair device for repairing a native valve of a patient, the valve repair device comprising:
a coaption element having four layers, wherein each layer has a middle portion extending between two edge portions, and wherein the middle portion is thinner than the two edge portions; and
a pair of paddles 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.
2. The valve repair device of claim 1 , wherein the four layers of the coaption element are formed from a single piece of material.
3. The valve repair device of claim 1 , wherein each layer of the coaption element comprises metal strands that are woven together.
4. The valve repair device of claim 1 , wherein each layer of the coaption element comprises an electro spun material.
5. The valve repair device of claim 1 , wherein each layer of the coaption element comprises electrospun metal fibers.
6. The valve repair device of claim 1 , wherein the paddles comprise an inner paddle portion and an outer paddle portion.
7. The valve repair device of claim 6 , wherein the each of the inner paddle portions connects to two layers of the coaption element.
8. The valve repair device of claim 1 , wherein the paddles are disposed over an extension member.
9. The valve repair device of claim 8 , wherein the extension member comprises a hoop.
10. The valve repair device of claim 8 , wherein the paddles comprise an inner paddle portion and an outer paddle portion.
11. The valve repair device of claim 10 , wherein the inner paddle portion is disposed between the extension member and the coaption element.
12. The valve repair device of claim 1 , wherein the coaption element has a rectangular cross-section.
13. The valve repair device of claim 1 , wherein the coaption element has two inner layers and two outer layers.
14. The valve repair device of claim 1 , further comprising a base assembly that comprises:
a shaft;
a collar that the shaft extends through; and
a cap attached to the shaft such that the cap can be moved by the shaft away from the collar;
wherein the pair of paddles are attached to the cap; and
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 14 , wherein the shaft extends between the layers of the coaption element.
16. The valve repair device of claim 15 , wherein two layers of the coaption element are disposed on each side of the shaft.
17. The valve repair device of claim 15 , wherein the coaption element has two inner layers and two outer layers and the shaft extends between the two inner layers.
18. The valve repair device of claim 15 , wherein the shaft causes middle portions of each layer to expand outwards.
19. The valve repair device of claim 15 , wherein the shaft causes middle portions of the layers on one side of the shaft to spread apart from layers on the other side of the shaft.
20. 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.
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 a native valve of a patient, the valve repair device comprising:
a coaption element having four layers, wherein each layer has a middle portion extending between two edge portions, and wherein the middle portion is thinner than the two edge portions; and
a pair of paddles 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.