Left atrial appendage occluder device anchoring system, anchor, and method of attachment
The present invention relates in general to anchoring systems for occluder devices, and more specifically, to an anchoring system and method for implanting an occluder device within a left atrial appendage (“LAA”) of the heart. The anchoring system is configured so that an anchor penetrates the inner endocardium layer, middle myocardium layer, and outer epicardium layer of an LAA wall. The purpose of the present invention is to provide an occluder device anchor that has a low risk of embolization and/or causing injury to neighboring valve structures. An additional purpose of the present invention is to provide an anchoring system and method for implanting an occluder device within the LAA that allows for the occluder device to be retrievable after initial placement, reusable, and repositionable for an optimal final placement within the LAA.
1. An anchoring system for implanting a left atrial appendage (LAA) occluder device within the LAA of a heart, comprising:
the LAA occluder device;
an anchor comprising a first half, an opposite second half and a shaft connecting the first half to the second half;
a contracted first position of the anchor;
a deployed second position of the anchor;
the LAA occluder device in a retracted condition and the anchor in the contracted first position configured to be advanced into the LAA;
the second half and the shaft of the anchor in the contracted first position configured to be advanced through a hole through an inner endocardium layer, a middle myocardium layer, and an outer epicardium layer of a LAA wall;
the second half of the anchor in the contracted first position configured to be advanced into a pericardial space;
the second half of the anchor configured to expand from the contracted first position to the deployed second position in the pericardial space;
the shaft of the anchor configured to reside inside the hole through the inner endocardium layer, the middle myocardium layer, and the outer epicardium layer of the LAA wall;
the first half of the anchor configured to expand from the contracted first position to a partially deployed second position within the LAA occluder device;
the LAA occluder device configured to expand and occlude the LAA;
the first half of the anchor configured to expand from the partially deployed second position to the deployed second position within the LAA occluder device; and
the anchor configured to pin the LAA occluder device between the first half of the anchor in the deployed second position and against the LAA wall inside the LAA;
wherein the LAA occluder device is configured to be moored to the LAA wall via the anchor implanted through the inner endocardium layer, the middle myocardium layer, and the outer epicardium layer of the LAA wall.
2. The anchoring system of claim 1 , further comprising:
the LAA occluder device detachable from the anchor;
the anchor configured to be left implanted through the LAA wall of the LAA at a first location;
the LAA occluder device configured to be retrieved from the LAA;
the LAA occluder device and a second anchor configured to be advanced into the LAA;
the second anchor configured to be advanced through the LAA wall of the LAA at a second location;
the LAA occluder device configured to expand to occlude the LAA; and
the second anchor configured to pin the LAA occluder device against the LAA wall inside the LAA at the second location;
wherein the LAA occluder device is configured to be moored to the LAA wall via the second anchor implanted through the inner endocardium layer, the middle myocardium layer, and the outer epicardium layer of the LAA wall.
3. The anchoring system of claim 1 , further comprising:
the LAA occluder device detachable from the anchor;
the anchor configured to be left implanted through the LAA wall of the LAA;
the LAA occluder device configured to be retrieved from the LAA;
a second occluder device configured to be advanced into the LAA;
the second LAA occluder device configured to be attached to the anchor implanted in the LAA wall of the LAA;
the second LAA occluder device configured to expand to occlude the LAA; and
the anchor configured to pin the second LAA occluder device against the LAA wall inside the LAA;
wherein the second LAA occluder device is configured to be moored to the LAA wall via the anchor implanted through the inner endocardium layer, the middle myocardium layer, and the outer epicardium layer of the LAA wall.
4. The anchoring system of claim 1 , wherein the anchor is separate from the occluder device.
5. The anchoring system of claim 4 , further comprising:
a hole in the LAA occluder device; and
the shaft of the anchor configured to extend through the hole in the LAA occluder device.
6. The anchoring system of claim 1 , wherein the anchor is self-expanding.
7. The anchoring system of claim 1 , wherein the anchor comprises a sheave shape.
8. The anchoring system of claim 1 , wherein the anchor comprises at least one coil.
9. The anchoring system of claim 8 , wherein the first half of the anchor comprises a first coil and the second half of the anchor comprises a second coil, wherein the first coil is connected to the second coil via the shaft.
10. The anchoring system of claim 9 , wherein the first coil unwinds in a first direction and the second coil unwinds in an opposite second direction.
11. The anchoring system of claim 1 , wherein the anchor and the LAA occluder device are integral.
12. An anchoring system for implanting a left atrial appendage (LAA) occluder device within the LAA of a heart, comprising:
an anchor comprising a first half, an opposite second half and a shaft connecting the first half to the second half;
the first half of the anchor comprising the LAA occluder device configured to occlude the LAA of the heart to prevent blood from poolinq, collectinq and/or forminq blood clots in the LAA during atrial fibrillation to reduce the risk of stroke;
a contracted first position of the anchor;
a deployed second position of the anchor;
the anchor configured to be advanced into the LAA, wherein the anchor is in the contracted first position;
the second half and the shaft of the anchor in the contracted first position configured to be advanced through a hole through an inner endocardium layer, a middle myocardium layer, and an outer epicardium layer of a LAA wall;
the second half of the anchor in the contracted first position configured to be advanced into a pericardial space from the LAA;
the second half of the anchor configured to expand from the contracted first position to the deployed second position in the pericardial space;
the shaft of the anchor configured to reside inside the hole through the inner endocardium layer, the middle myocardium layer, and the outer epicardium layer of the LAA wall;
the first half of the anchor comprising the LAA occluder device configured to expand from the contracted first position to the deployed second position to occlude the LAA;
the second half of the anchor configured to pin the LAA occluder device against the LAA wall inside the LAA in the deployed second position;
wherein the LAA occluder device is configured to be moored to the LAA wall via the second half of the anchor.
13. The anchoring system of claim 12 , further comprising:
the anchor comprising the LAA occluder device configured to be retrieved from the LAA;
a second anchor configured to be advanced into the LAA;
a first half of the second anchor comprising a second LAA occluder device;
the second anchor configured to be implanted in the LAA wall of the LAA; and
the second LAA occluder device configured to be released to occlude the LAA;
a second half of the second anchor configured to pin the second LAA occluder device against the LAA wall inside the LAA;
wherein the second LAA occluder device is configured to be moored to the LAA wall via the second half of the second anchor.
14. The anchoring system of claim 12 , wherein the anchor and the LAA occluder device are integral.
15. The anchoring system of claim 12 , wherein the anchor and the LAA occluder device are self-expanding.
16. The anchoring system of claim 12 , wherein the second half of the anchor comprises a sheave shape.
17. The anchoring system of claim 12 , wherein the second half of the anchor comprises a coil.