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 includes an anchor portion and an occluder portion. The anchor portion includes frame segments, each anchor frame segment extending between a first end and a second end such that the second end of each anchor frame segment is coupled to an anchor hub. The occluder portion includes a hub that defines an axis. The occluder portion includes multiple occluder frame segments that extend between a proximal end and a distal end such that the proximal end of the occluder frame segments are pivotably coupled to the hub and the distal end of the occluder frame segments are pivotably coupled to the first end of the anchor frame segments.
1. A medical device for modifying a left atrial appendage of a heart, the medical device comprising:
an occluder portion including a hub defining an axis, the occluder portion including a framework extending between a proximal end and a distal end, the proximal end of the framework coupled to the hub; and
an anchor portion extending between a first end and a second end, the first end pivotably coupled to the distal end of the framework, the second end coupled to an anchor hub, the anchor hub moveable along the axis proximally to move the anchor portion to an anchor retracted position with a portion of the anchor portion moveable through the hub and the anchor hub moveable along the axis distally to move the anchor portion to an anchor deployed position.
2. The medical device of claim 1 , wherein, upon the anchor portion moving to an anchor retracted position, the occluder portion maintains a deployed position.
3. The medical device of claim 1 , wherein the anchor portion comprises tines and extensions, the extensions extending distally adjacent to the tines of the anchor portion and the extensions continuously extending inward and then extending proximally to the anchor hub.
4. The medical device of claim 1 , wherein the occluder portion comprises a tissue growth member.
5. The medical device of claim 1 , wherein the occluder portion comprises at least one of a foam material and ePTFE.
6. The medical device of claim 1 , wherein the framework comprises a super elastic material.
7. The medical device of claim 6 , wherein the super elastic material comprises a Nitinol material.
8. A medical device for modifying a left atrial appendage of a heart, the medical device comprising:
a framework including a hub defining an axis, the framework including a tissue growth member extending over a proximal side of the framework, the framework including an anchor portion at least partially extending distal of the tissue growth member, the anchor portion including tines configured to attach to the left atrial appendage, the framework including strut extensions extending distally adjacent from the tines, the strut extensions continuously extending distally and inward at a distal most side of the framework and then extending proximally to a secondary hub.
9. The medical device of claim 8 , wherein the secondary hub moves along the axis, wherein, upon the secondary hub moving along the axis, the framework moves between a non-deployed position and a deployed position.
10. The medical device of claim 8 , wherein the secondary hub moves proximally and distally along the axis, wherein, upon the secondary hub moving proximally, the framework moves to a non-deployed position and, wherein, upon the secondary hub moving distally, the framework moves to a deployed position.
11. The medical device of claim 8 , wherein the secondary hub is moveable along the axis relative to the hub.
12. The medical device of claim 8 , wherein the tissue growth member comprises at least one of a foam material and ePTFE.
13. The medical device of claim 8 , wherein the framework comprises a super elastic material.
14. The medical device of claim 1 , wherein the framework of the occluder portion comprises a monolithic seamless structure.
15. The medical device of claim 1 , wherein the hub is coupled adjacent to a free end of the framework such that the free end of the framework abuts against a distal facing abutment surface of the hub.
16. The medical device of claim 1 , wherein the framework is pivotably coupled to the hub.
17. The medical device of claim 8 , wherein the framework with the tissue growth member extending thereover comprises a monolithic seamless structure.
18. The medical device of claim 8 , wherein the hub is coupled adjacent to a free end of the framework such that the free end of the framework abuts against a distal facing abutment surface of the hub.
19. The medical device of claim 8 , wherein the framework is pivotably coupled to the hub.
20. The medical device of claim 8 , wherein the hub extends integrally with retainer fingers, the retainer fingers sized and configured to couple to eyelets defined in the framework adjacent to free ends of the framework.