Medical device for modification of left atrial appendage and related systems and methods
Several embodiments are set forth of devices, systems and methods for modifying an atrial appendage such as a left atrial appendage (LAA). In one embodiment, a medical device includes a frame member and a tissue growth member. The frame member includes a unitary, seamless central portion having a plurality of struts defining a multi-cellular structure and an anchoring system, the plurality of struts extending between and configured to self-expand and directly bias the anchor system to anchor the frame member at least partially within the LAA. With this arrangement, the tissue growth member is attached to the frame member to occlude the LAA.
1. A medical device for modifying a left atrial appendage (LAA), comprising:
a frame member including distal anchor members for anchoring the frame member within the LAA, the frame member including a unitary, seamless central portion having a plurality of struts defining a multi-cellular structure extending between and configured to self-expand and directly bias the distal anchor members against a wall in the LAA, the plurality of struts and the distal anchor members extending in a common plane; and
a tissue growth member attached to the frame member and configured to occlude an opening of the LAA;
wherein the distal anchor members comprise first and second distal anchor members extending in a first plane and third and fourth distal anchor members extending in a second plane, the first plane transverse to the second plane.
2. The medical device of claim 1 , wherein the distal anchor members comprise a first distal anchor portion and a second distal anchor portion with the central portion extending therebetween.
3. The medical device of claim 1 , wherein the distal anchor members comprise tines extending therefrom for engaging the wall in the LAA.
4. The medical device of claim 1 , wherein the frame member comprises proximal anchor members extending from the central portion.
5. The medical device of claim 4 , wherein the tissue growth member is directly attached to the proximal anchor members.
6. The medical device of claim 1 , wherein the multi-cellular structure of the central portion extends with a substantially flat configuration.
7. The medical device of claim 6 , wherein the tissue growth member comprises a polymeric substrate.
8. A medical device for modifying a left atrial appendage (LAA), comprising:
a frame member including a central portion having a plurality of struts defining a multi-cellular structure and an anchoring system, the plurality of struts and the anchoring system extending in a common plane, the plurality of struts extending between and configured to self-expand and directly bias the anchor system to anchor the frame member at least partially within the LAA; and
a tissue growth member attached to the frame member;
wherein the anchoring system comprises:
a first distal anchor and a second distal anchor, the first distal anchor being co-planar with the second distal anchor; and
a third distal anchor and a fourth distal anchor, the third distal anchor being co-planar with the fourth distal anchor, the first distal anchor extending in a discrete plane relative the third distal anchor.
9. The medical device of claim 8 , wherein the multi-cellular structure of the central portion extends with a substantially flat configuration.
10. The medical device of claim 8 , wherein the frame member comprises proximal anchor members extending from the central portion.
11. The medical device of claim 10 , wherein the tissue growth member is attached to the proximal anchor members.
12. The medical device of claim 8 , wherein the distal anchor members comprise tines extending therefrom for engaging the wall in the LAA.
13. The medical device of claim 8 , wherein the central portion is a unitary and seamless structure.