Medical device for modification of left atrial appendage and related systems and methods
Devices, methods and systems are provided for occluding an opening within the tissue of a body, such as a left atrial appendage. In one embodiment, a medical device coupled to a delivery catheter includes a fluid flow path that facilitates contrast fluid to pass through the delivery catheter and the medical device to a distal side thereof to provide imaging information as to the position of the medical device positioned in the opening, such as the left atrial appendage. In another embodiment, a medical device is coupled to a delivery catheter, the medical device including flaps adjacent a hub of the medical device that close-off a bore of the hub upon the catheter being detached from the medical device.
1. A method for modifying a left atrial appendage (“LAA”) of a heart, the method comprising:
anchoring a medical device in the LAA with a delivery catheter directly coupled to a hub of the medical device such that the medical device includes an occluder material extending over a proximal side of medical device with occluder material flaps adjacent the hub in an open first position, the medical device having a spring element positioned over the hub and enveloped at least partially by the occluder material flaps; and
detaching the catheter from the hub of the medical device such that the occluder material flaps adjacent the hub automatically move to a closed second position to close-off the hub of the medical device.
2. The method according to claim 1 , wherein the anchoring comprises anchoring the medical device with the occluder material being a polymeric material.
3. The method according to claim 1 , wherein the detaching comprises unthreading the catheter from the medical device.
4. The method according to claim 1 , wherein the detaching comprises detaching the catheter having threads from a threaded portion of the medical device.
5. The method according to claim 1 , wherein the detaching comprises closing a bore of the hub with the occluder material flaps being biased to the closed position such that the occluder material flaps substantially eliminate exposure of metallic material on the proximal side of the medical device at the hub of the medical device.
6. A method for modifying a left atrial appendage (“LAA”) of a heart, the method comprising:
anchoring a medical device in the LAA with a delivery catheter coupled to a hub of the medical device such that the medical device includes a moveable portion positioned adjacent the hub and moveable between an open first position and a closed second position, the moveable portion in the open first position with the delivery catheter coupled to the medical device, the moveable portion having a spring element adjacent the hub and biased toward a flat configuration; and
detaching the delivery catheter from the hub of the medical device such that the moveable portion adjacent the hub automatically moves to the closed second position to close-off the hub of the medical device.
7. The method according to claim 6 , wherein the anchoring comprises anchoring the medical device including the moveable portion having the spring element, the spring element biased upon being in the open first position and the spring element relaxed upon being in the closed second position.
8. The method according to claim 6 , wherein the anchoring comprises anchoring the medical device with a polymeric material positioned at least partially over a proximal side of the medical device.
9. The method according to claim 6 , wherein the detaching comprises unthreading the delivery catheter from the medical device.
10. The method according to claim 6 , wherein the detaching comprises detaching the delivery catheter having threads from a threaded portion of the medical device.
11. The method according to claim 6 , wherein the detaching comprises closing a bore of the hub with the moveable portion being biased to the closed position such that the moveable portion substantially eliminates exposure of metallic material on the proximal side of the medical device at the hub of the medical device.
12. The method according to claim 6 , wherein the anchoring comprises anchoring the medical device with the moveable portion defining material flaps sized to at least partially envelope the spring element.
13. A method for closing-off an opening, the method comprising:
anchoring a medical device in the opening with a delivery catheter coupled to a hub of the medical device such that the medical device includes a moveable portion positioned adjacent the hub, the moveable portion being moveable between an open first position and a closed second position, the moveable portion being in the open first position with the delivery catheter coupled to the medical device, the moveable portion having a spring element positioned adjacent the hub and biased toward the closed position; and
detaching the delivery catheter from the hub of the medical device such that the spring element adjacent the hub automatically moves the moveable portion to the closed second position to cover a proximal side of the hub of the medical device.
14. The method according to claim 13 , wherein the anchoring comprises anchoring the medical device with the moveable portion defining material flaps sized to at least partially envelope the spring element.
15. The method according to claim 14 , wherein the anchoring comprises anchoring the medical device such that the material flaps are spaced apart in the open first position and, upon detaching the delivery catheter from the hub, the material flaps move to an overlapping configuration in the closed second position.
16. The method according to claim 13 , wherein the anchoring comprises anchoring the medical device with the moveable portion including a polymeric material.
17. The method according to claim 13 , wherein the anchoring comprises anchoring the medical device with the moveable portion defining material flaps sized to at least partially envelope the spring element.
18. The method according to claim 13 , wherein the detaching comprises unthreading the delivery catheter from the medical device.
19. The method according to claim 13 , wherein the detaching comprises detaching the delivery catheter having threads from a threaded portion of the medical device.
20. The method according to claim 13 , wherein the detaching comprises closing a bore of the hub with the moveable portion being biased to the closed position such that the moveable portion defines flaps that cover metallic material on the proximal side of the medical device at the hub of the medical device.