Closure device for left atrial appendage
First Claim
1. A device for closing the left atrial appendage of a patient comprising a retention member composed of a shape memory material and a mesh material supported by the retention member, the retention member having a first elongated configuration for delivery and a second expanded configuration for placement within the left atrial appendage, the mesh configured to block blood clot migration from the appendage, in the second configuration the retention member moving toward a shape memory position, the retention member having at least one appendage wall engagement members to secure the retention member to the appendage.
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Accused Products
Abstract
A device for closing the left atrial appendage of a patient comprising a retention member composed of a shape memory material and a mesh material supported by the retention member. The retention member has a first elongated configuration for delivery and a second expanded configuration for placement within the left atrial appendage. The mesh is configured to block blot clot migration from the appendage. In the second configuration the retention member moves toward a shape memory position. The retention member has a plurality of appendage wall engagement members to secure the retention member to the appendage.
160 Citations
19 Claims
- 1. A device for closing the left atrial appendage of a patient comprising a retention member composed of a shape memory material and a mesh material supported by the retention member, the retention member having a first elongated configuration for delivery and a second expanded configuration for placement within the left atrial appendage, the mesh configured to block blood clot migration from the appendage, in the second configuration the retention member moving toward a shape memory position, the retention member having at least one appendage wall engagement members to secure the retention member to the appendage.
- 11. A device for occluding the left atrial appendage comprising a tube laser cut to form a series of struts, the tube having a first elongated configuration for delivery and a second configuration for placement, in the second configuration the tube having an expanded configuration, the struts extending outwardly so that a distal region of the struts has a greater dimension and the struts defining a space therebetween, a mesh material supported by the struts and providing a blocking member to block blood clot migration from the appendage.
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17. A method for left atrial appendage occlusion comprising the steps of:
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inserting into the left atrial appendage a sheath containing a retention member having a plurality of struts in a reduced profile position; exposing the retention member from the sheath to enable it to expand to engage a wall of the left atrial appendage; subsequently inserting mesh material in situ within a space between the plurality of struts; and withdrawing the sheath to leave the retention member in the left atrial appendage so the mesh material fills the space within the retention member to block blood clot migration. - View Dependent Claims (18, 19)
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Specification