Devices and methods for left atrial appendage closure
Surgical and percutaneous devices for closing tissue, for example, the left atrial appendage, may have an elongate body with a stiffened proximal portion, a flexible middle portion, a distal portion, a closure element with a loop having a continuous aperture therethrough, and a suture loop. The closure devices may have a malleable member attached to the elongate body that may be configured to retain a curve after a force is applied to the malleable member. System and methods for closing the left atrial appendage may utilize a closure device and a curved guide device, and the closure device and curved guide device may be self-orienting.
1. A device for closing a left atrial appendage comprising:
an elongate body comprising a first lumen, a second lumen, and a third lumen;
a closure element comprising a loop defining a continuous aperture therethrough, a first end of the closure element slideably disposed in the first lumen and a second end of the closure element fixedly disposed in the second lumen; and
a handle coupled to the elongate body, wherein the handle comprises an aperture in a proximal end thereof configured to releasably receive a tensioning mechanism, a release slot extending from the aperture, and a lock configured to hold the tensioning mechanism when the tensioning mechanism is received in the aperture.
2. The device of claim 1 further comprising the tensioning mechanism positioned within the aperture.
3. The device of claim 2 wherein the tensioning mechanism is rotatably coupled to the handle.
4. The device of claim 2 wherein the closure device further comprises a suture loop, and wherein the tensioning mechanism is configured to close the suture loop around tissue after it is released from the handle.
5. The device of claim 2 wherein the tensioning mechanism locks into the handle.
6. The device of claim 2 , the tensioning mechanism further comprising a pin, wherein the pin is placed within the lock when the tensioning mechanism is rotated.
7. The device of claim 1 further comprising at least one of a scope, a light, and a camera.
8. The device of claim 1 wherein the device is configured to close a left atrial appendage during an open surgical procedure.
9. The device of claim 8 wherein the open surgical procedure is a median sternotomy, mini sternotomy, thoracotomy, or a thoracoscopy.
10. The device of claim 1 , further comprising a malleable member fixedly attached to the elongate body, wherein the malleable member is configured to retain a curve after a force is applied, and wherein applying a force to the malleable member modifies a curvature of the elongate body.
11. The device of claim 10 wherein the malleable member is disposed in the third lumen.
12. The device of claim 11 wherein the malleable member comprises a first end and a second end, and wherein the first end is fixedly attached to a proximal end of the third lumen and the second end is fixedly attached to a distal end of the third lumen.
13. The device of claim 12 wherein the malleable member comprises an annealed stainless steel wire.
14. The device of claim 10 wherein the malleable member comprises a jacket around the elongate body.
15. The device of claim 14 wherein the device further comprises a pull wire disposed in the third lumen, wherein the pull wire is configured to deflect a distal end of the elongate body.
16. The device of claim 14 wherein the jacket is annealed stainless steel.
17. The device of claim 16 wherein the jacket comprises a spiral cut pattern.
18. The device of claim 1 , wherein the lock is on an internal surface of the handle.
19. The device of claim 18 , wherein the lock is in the form of a cylindrical indentation on the internal surface of the handle.
20. A device for closing a left atrial appendage comprising:
an elongate body comprising a first lumen, a second lumen, and a third lumen;
a closure element comprising a loop defining a continuous aperture therethrough, a first end of the closure element slideably disposed in the first lumen and a second end of the closure element fixedly disposed in the second lumen;
a handle coupled to the elongate body; and
a tensioning device comprising a pin, wherein the tensioning device is releasably coupled to the handle,
wherein the handle comprises an aperture in a proximal end thereof, a release slot extending from the aperture, and a lock, and wherein the aperture is configured to releasably receive the tensioning device and the release slot is configured to allow passage of the pin through the handle.