Medical device for modification of left atrial appendage and related systems and methods

摘要

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 device includes a body that is collapsible and self-expanding. The body includes a textured surface with protruding portions and recessed portions. The body may be formed of a reticulated foam material and may exhibit a substantially spherical geometry or a truncated spherical geometry. The body may be substantially hollow. In one embodiment, portions of the textured surface may be metalized or have a coating placed thereon to enhance frictional engagement of the body with the atrial appendage wall. In another embodiment, a mesh bag is disposed within an LAA and one or more self-expanding bodies are disposed within the mesh bag. The mesh bag is then secured to retain the self-expanding bodies within the bag and the LAA.

主权项

1. A medical device for modifying a left atrial appendage (LAA), comprising:
a polymer foam body formed of a self-expanding porous material, the body exhibiting a textured surface including a plurality of protruding portions and a plurality of recesses, each protruding portion being separated from an adjacent protruding portion by a recess of the plurality of recesses, each of the recesses having a predetermined depth defined relative to the adjacent protruding portions, each protruding portion having a square shaped end to define a first side, a second side, a third side, and a fourth side such that the first side is opposite the second side and the third side is opposite the fourth side, at least one protruding portion being separated from an adjacent protruding portion on each of the first side, the second side, the third side, and the fourth side of the at least one protruding portion; wherein the plurality of protruding portions of the polymer foam body are configured to engage an inner wall of the LAA and anchor the polymer foam body in the LAA.