Implantable vascular graft
First Claim
1. A tubular wire support for combination with a sheath to produce a bifurcated endoluminal prosthesis, said tubular wire support comprising:
- a main body support structure having a proximal end, a distal end and a central lumen extending therethrough, the support structure comprising at least a first and second axially adjacent tubular segments, each segment comprising a plurality of wall struts connected by proximal and distal bends;
a first branch support structure having a proximal end, a distal end and a central lumen therethrough connected to the main body support structure;
a second branch support structure having a proximal end, a distal end and a central lumen extending therethrough, connected to the main body support structure;
at least two sliding links in between the first and second segments; and
at least one lock on a wall strut between a proximal bend and a distal bend for limiting axial movement of a sliding link along that strut.
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Accused Products
Abstract
Disclosed is a tubular endoluminal vascular prosthesis, useful in treating, for example, an abdominal aortic aneurysm. The prosthesis comprises a self-expandable wire support structure having a tubular main body support and first and second branch supports. The support structure may include sliding links to permit flexibility while maintaining patency of the central lumen. The branch supports may articulate with the main body to permit the branches to pivot laterally from the axis of the main body throughout a substantial range of motion. Exoskeleton components or barbs may be provided to resist migration and endoleaks.
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Citations
35 Claims
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1. A tubular wire support for combination with a sheath to produce a bifurcated endoluminal prosthesis, said tubular wire support comprising:
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a main body support structure having a proximal end, a distal end and a central lumen extending therethrough, the support structure comprising at least a first and second axially adjacent tubular segments, each segment comprising a plurality of wall struts connected by proximal and distal bends;
a first branch support structure having a proximal end, a distal end and a central lumen therethrough connected to the main body support structure;
a second branch support structure having a proximal end, a distal end and a central lumen extending therethrough, connected to the main body support structure;
at least two sliding links in between the first and second segments; and
at least one lock on a wall strut between a proximal bend and a distal bend for limiting axial movement of a sliding link along that strut. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A flexible self expandable graft, comprising:
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a tubular main body support structure having a proximal end and a distal end, the tubular body comprising at least a first tubular segment attached to a second tubular segment; and
a tubular polymeric sleeve surrounding at least a portion of the graft;
wherein each of the first and second tubular segments comprise a plurality of proximal bends and distal bends connected by struts surrounding a longitudinal axis such that a first strut is on a first side of the axis and a second strut is on a second side of the axis, opposite to the first side, and in at least one segment the first strut is shorter than the second strut such that when the vascular graft is expanded the first side includes a concave curved portion and the second side includes a convex curved portion. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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- 22. An endoluminal prosthesis, comprising at least one elongate flexible wire, formed into a plurality of axially adjacent tubular segments spaced along an axis, each tubular segment comprising a zig-zag section of wire, having a plurality of proximal bends and distal bends, at least one of the plurality of proximal bends and plurality of distal bends having loops thereon, and a tubular polymeric sleeve carried by the prosthesis, wherein the prosthesis is radially compressible into a first, reduced cross sectional configuration for implantation into a body lumen, and self expandable to a second, enlarged cross sectional configuration at a treatment site in a body lumen, and wherein at least a first portion of wire in one tubular segment is positioned on a radially outwardly facing surface of the sleeve and a radially inwardly facing surface of the sleeve is in contact with a second portion of wire.
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32. A tubular wire support for a bifurcated endoluminal prosthesis, said wire support comprising:
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a main body support structure having a proximal end, a distal end and a central lumen extending along a longitudinal axis therethrough;
a first branch support structure having a proximal end, a distal end and a central lumen therethrough, wherein the distal end of the first branch support structure is connected to the proximal end of the main body support structure;
a second branch support structure having a proximal end, a distal end and a central lumen extending therethrough wherein the distal end of the second branch support structure is connected to the proximal end of the main body support structure, wherein the wire in each support structure is formed into a plurality of segments, each segment comprising a series of proximal bends, a series of distal bends, and a series of struts connecting the proximal and distal bends; and
a plurality of radially outwardly extending barbs on the main body, said barbs being integrally formed on the wire support by bending a proximal or distal bend radially outwardly at a bend point;
wherein the main body support structure and the first and second branch support structure are self-expandable from a radially collapsed state to a radially expanded state. - View Dependent Claims (33, 34, 35)
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Specification