Systems and methods for supporting or occluding a physiological opening or cavity
First Claim
1. An implantable device configured for placement at the opening of a physiological cavity and adjustable from a generally small diameter delivery condition to a deployed condition in which it assumes a larger diameter configuration,wherein the implantable device, in the deployed condition, comprises a substantially inverted U-shaped framework structure curving angularly away from a central longitudinal axis with at least two anchoring legs extending directly from the U-shaped framework structure,wherein the framework structure has at least one lateral area sized and configured to be positioned in proximity to the opening of the physiological cavity,wherein the at least two anchoring legs extend from the U-shaped framework structure generally opposite one another and along substantially parallel, opposed planes in the deployed arrangement, and further wherein the anchoring legs are sized and configured to contact tissue surface areas generally opposite one another on a neighboring lumen, andwherein the implantable device further comprises a membrane associated with at least a portion of the framework structure.
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Abstract
Implantable devices for placement at a cavity or opening such as an aneurysm are disclosed. The implantable devices, in a deployed condition, have a generally inverted U-shaped profile with a curved or angled framework support structure sized and configured for placement in proximity to tissue surrounding the opening and anchoring legs extending proximally from the framework structure sized and configured to contact the wall of a neighboring lumen at opposed locations. Occlusive and semi-occlusive membranes may be associated with the framework support structure and deployed over the opening to provide exclusion of the opening and flow diversion. Proximal anchoring segments providing additional lumen wall surface area contact for the implantable device following deployment may be incorporated.
206 Citations
14 Claims
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1. An implantable device configured for placement at the opening of a physiological cavity and adjustable from a generally small diameter delivery condition to a deployed condition in which it assumes a larger diameter configuration,
wherein the implantable device, in the deployed condition, comprises a substantially inverted U-shaped framework structure curving angularly away from a central longitudinal axis with at least two anchoring legs extending directly from the U-shaped framework structure, wherein the framework structure has at least one lateral area sized and configured to be positioned in proximity to the opening of the physiological cavity, wherein the at least two anchoring legs extend from the U-shaped framework structure generally opposite one another and along substantially parallel, opposed planes in the deployed arrangement, and further wherein the anchoring legs are sized and configured to contact tissue surface areas generally opposite one another on a neighboring lumen, and wherein the implantable device further comprises a membrane associated with at least a portion of the framework structure.
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13. An implantable device assembly for placement at an opening or cavity in a target tissue, the assembly comprising:
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an elongated, flexible delivery sheath; at least one elongated, flexible delivery mechanism axially movable with respect to the delivery sheath; and an implantable device associated with a distal end of the delivery mechanism and positioned in a distal end of the delivery sheath, wherein the implantable device is transformable between a low-profile delivery arrangement and a deployed arrangement in which the implantable device assumes a larger diameter configuration outside the delivery sheath; wherein the implantable device, in the deployed arrangement, comprises a generally U-shaped support structure curving laterally away from a central longitudinal axis, a membrane associated with at least a portion of the framework structure, and at least two anchoring legs extending directly from the U-shaped support structure substantially opposite one another.
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14. An implantable device configured for placement at an opening of a physiological cavity, the implantable device comprising:
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a substantially inverted U-shaped framework structure curving angularly away from a central longitudinal axis, wherein the framework structure has at least one lateral area sized and configured to be positioned in proximity to the opening of the physiological cavity; a membrane carried by at least a portion of the framework structure; and two anchoring legs extending directly from the U-shaped framework structure and generally opposite one another, wherein the anchoring legs are sized and configured to contact tissue surface areas generally opposite one another on a neighboring lumen, wherein a perimeter of the each anchoring leg defines a generally triangular configuration and terminates in a proximal apex.
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Specification