Endolumenal stent-graft with leak-resistant seal
First Claim
1. A device comprising:
- a self-expanding substantially tubular stent-graft, said stent-graft having an outer surface and upstream and downstream ends;
a seal member secured to the outer surface of said stent-graft adjacent said upstream end, said seal member comprising an occlusive cuff having a downstream cuff end secured to said outer surface and an unsecured upstream cuff end actuatable to form a seal over said outer surface; and
a plurality of anchor members spaced around the outer surface of said stent-graft upstream of said seal member, said anchor members having first anchor end portions secured to said outer surface and second anchor end portions extending radially outward from said outer surface.
2 Assignments
0 Petitions
Accused Products
Abstract
An implantable medical device has a tubular member and a sealing member secured to an outer surface of the tubular member. The tubular member is expandable to engage an endolumenal wall and has a lumen for providing an artificial conduit for flow through an endolumenal space defined by that wall. The seal member occludes flow around the tubular member between the outer surface and the endolumenal wall. One suitable tubular member for use in the present invention is a stent-graft which may be bifurcated for use in protecting vascular wall malformations adjacent to vascular bifurcations against endolumenal pressure and flow. The seal member may be a flange that is oriented on the outer surface at one end of the tubular member as a one-way valve against flow. Multiple seal members may be used, either on opposite ends of the tubular member or in series at one end thereof. Where anchors are used to secure the tubular member to the endolumenal wall, the seal member is positioned to protect against flow through leakage paths formed at localized areas of deformation in the tubular wall adjacent to the anchors. One or more seal members may also be used with two or more tubular members to prevent flow through endolumenal spaces that remain open to flow due to gaps between the multiple, parallel tubular members.
-
Citations
23 Claims
-
1. A device comprising:
-
a self-expanding substantially tubular stent-graft, said stent-graft having an outer surface and upstream and downstream ends; a seal member secured to the outer surface of said stent-graft adjacent said upstream end, said seal member comprising an occlusive cuff having a downstream cuff end secured to said outer surface and an unsecured upstream cuff end actuatable to form a seal over said outer surface; and a plurality of anchor members spaced around the outer surface of said stent-graft upstream of said seal member, said anchor members having first anchor end portions secured to said outer surface and second anchor end portions extending radially outward from said outer surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A device comprising:
-
a self-expanding stent-graft having an outer surface, an upstream end portion comprising a substantially tubular structure having a single lumen, and a downstream end portion comprising multiple leg portions, each said leg portion terminating in a downstream end and comprising a substantially tubular structure having a separate lumen in communication with the single lumen; a seal member secured to the outer surface of said stent-graft adjacent said upstream end, said seal member comprising an occlusive cuff having a downstream cuff end secured to said outer surface and an unsecured upstream cuff end actuatable to form a seal over said outer surface; and a plurality of anchor members spaced around the outer surface of said stent-graft upstream of said seal member, said anchor members having first anchor end portions secured to said outer surface and second anchor end portions extending radially outward from said outer surface. - View Dependent Claims (19, 20, 21, 22, 23)
-
Specification