Occlusive device
AssigneeCovidien LP
InventorsTeresa Ruvalcaba, Earl Bardsley, Richard Rhee
Life of this patent
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Abstract
An aneurysm embolization device can include a body having a single, continuous piece of material that is shape set into a plurality of distinct structural components. For example, the device can have an expandable component and an atraumatic tip portion extending therefrom. Further, the tip portion can be configured to enable the device to be implanted within the aneurysm while tending to mitigate risk of puncturing the aneurysm dome or otherwise assist in framing the aneurysm in advance of placement of additional embolic material.
Claims15
A method for occluding an aneurysm of a blood vessel, the method comprising:
- advancing an intrasaccular device through a patient's vasculature to an aneurysm, wherein the intrasaccular device is advanced in a collapsed configuration within a lumen of a catheter, and wherein the intrasaccular device comprises an elongate member having a first longitudinal edge, a second longitudinal edge, and a broad surface extending between the first and second longitudinal edges, the elongate member comprising a plurality of braided filaments, wherein the elongate member includes a first portion for filling a volume of a cavity of the aneurysm and a second portion for framing the aneurysm, and wherein the second portion is positioned distal of the first portion when the intrasaccular device is in the collapsed configuration;
- and
- deploying the elongate member within the aneurysm cavity such that the elongate member assumes an expanded configuration in which the second portion forms a first loop wound about a first axis, a second loop wound about a second axis angled relative to the first axis, and a third loop wound about a third axis angled relative to at least one of the first axis or the second axis, wherein the first loop, the second loop, and the third loop define an interior region of the second portion and the first portion is positioned at least partially within the interior region, and wherein the broad surface of the elongate member along at least a portion of the first, second, and third loops of the second portion extends radially away from the interior region.
A method for occluding an aneurysm of a blood vessel, the device comprising:
- advancing an intrasaccular device through a patient's vasculature to an aneurysm, wherein the intrasaccular device is advanced in a collapsed configuration within a lumen of a catheter, and wherein the intrasaccular device comprises a primary structure formed of a flattened, tubular mesh having a first longitudinal edge, a second longitudinal edge, and a broad surface extending between the first and second longitudinal edges;
- and
- deploying the intrasaccular device within the aneurysm cavity such that the primary structure forms a secondary structure comprising a framing portion and a volume-filling portion, and wherein:
- the framing portion comprises a first three-dimensional structure including a plurality of continuous loops defining an interior region of the framing portion therebetween, wherein at least two loops of the plurality of loops are angled relative to one another,
- the volume-filling portion comprises a second three-dimensional structure and is positioned within the interior region of the framing portion, and
- the broad surface of the mesh along at least a portion of the plurality of loops of the framing portion extends radially away from the interior region.
Dependencies are inferred from the claim text.