Method and system for fixation of endoluminal devices
First Claim
1. A system for implantation in a lumen, the system comprising:
- an endoluminal device; and
a distal collar stent that preconditions a portion of the lumen and anchors the endoluminal device, wherein preconditioning comprises the distal collar stent being configured to promote intravascular tissue growth around the distal collar stent to strengthen an anchor location at a distal end of an aneurysm;
the endoluminal device having at a distal portion that deploys radially within the distal collar stent after deployment of the distal collar stent in the lumen at the distal end of the aneurysm, wherein the distal collar stent only covers the distal portion of the endoluminal device at the distal end of the aneurysm, wherein the endoluminal device has a distal end and a proximal end, and the system comprises the distal collar stent that aligns with and completely surrounds the distal end.
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Accused Products
Abstract
A system and method employs collar stents to implant an endoluminal device, such as a stent-graft, in a lumen. The system comprises at least one collar stent adapted to precondition a portion of the lumen for anchoring an endoluminal device having at least a portion adapted to be deployed radially within the collar stent. The method comprises first deploying one or more collar stents, and then deploying the endoluminal device radially within the one or more collar stents. In various embodiments, the collar stent may be radiopaque, may have inwardly protruding barbs for engaging the endoluminal device, and may have a region having a relatively low percentage of open area for bridging a portion of the main lumen having an intersecting lumen. The preconditioning step of implanting the collar stent may change the morphology of the lumen to more favorable morphology, such as from a non-circumferential geometry to a circumferential geometry.
40 Citations
18 Claims
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1. A system for implantation in a lumen, the system comprising:
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an endoluminal device; and
a distal collar stent that preconditions a portion of the lumen and anchors the endoluminal device, wherein preconditioning comprises the distal collar stent being configured to promote intravascular tissue growth around the distal collar stent to strengthen an anchor location at a distal end of an aneurysm;the endoluminal device having at a distal portion that deploys radially within the distal collar stent after deployment of the distal collar stent in the lumen at the distal end of the aneurysm, wherein the distal collar stent only covers the distal portion of the endoluminal device at the distal end of the aneurysm, wherein the endoluminal device has a distal end and a proximal end, and the system comprises the distal collar stent that aligns with and completely surrounds the distal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification