Self expanding bifurcated endovascular prosthesis
First Claim
Patent Images
1. A bifurcated endoluminal prosthesis, comprising:
- a proximal wire support section having a proximal end, a distal end and a central lumen extending therethrough;
a first wire branch section at the distal end of the proximal support; and
a second wire branch section at the distal end of the proximal support;
wherein at least the proximal support section and the first branch section are formed from a single length of wire.
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Abstract
Disclosed is a bifurcated tubular endoluminal vascular prosthesis, useful in treating, for example, an abdominal aortic aneurysm. The prosthesis comprises a self expandable wire support structure surrounded at least in part by a flexible tubular membrane. A delivery catheter and methods are also disclosed.
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Citations
39 Claims
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1. A bifurcated endoluminal prosthesis, comprising:
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a proximal wire support section having a proximal end, a distal end and a central lumen extending therethrough;
a first wire branch section at the distal end of the proximal support; and
a second wire branch section at the distal end of the proximal support;
wherein at least the proximal support section and the first branch section are formed from a single length of wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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12. A method of making a bifurcated endoluminal prosthesis, comprising the steps of:
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providing a first length of wire;
forming the wire into two or more zig-zag sections, each zig-zag section separated by a crosslink;
rolling the formed wire about an axis to produce a proximal tubular support section and a first distal tubular branch;
providing a second length of wire formed into a tube; and
attaching the tube to the proximal tubular support section to produce a second distal tubular branch. - View Dependent Claims (11, 13, 14, 15, 17, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29)
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16. A multizone endoluminal bifurcation prosthesis, comprising:
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a tubular wire support having a proximal end, a distal end, and a central lumen extending therethrough;
the wire support comprising at least a first and a second axially adjacent tubular segments, joined by a connector extending therebetween, wherein the first tubular segment has a different radial strength than the second tubular segment; and
a first and a second tubular wire branches connected to the distal end of the support to produce a multizone endoluminal bifurcation prosthesis.
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18. An endoluminal prosthesis, comprising an elongate flexible wire, formed into a plurality of axially adjacent tubular segments spaced along an axis and defining a central lumen therethrough, each tubular segment comprising a zig zag section of the wire, having a plurality of proximal bends and distal bends, with the wire continuing between each adjacent tubular segment, 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, said prosthesis further comprising a first branch support section and a second branch support section each in communication with the lumen.
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27. A method of implanting a self expandable tubular prosthesis at the junction of a main vessel and first and second branch vessels, comprising the steps of:
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advancing a delivery catheter distally through a least a portion of the first branch and into the main vessel, the catheter containing a prosthesis having a main section and first and second branch sections;
distally advancing a main sheath on the catheter to deploy the main section of the prosthesis within the main vessel;
proximally retracting a first branch sheath on the catheter to deploy the first branch portion of the prosthesis within the first branch vessel; and
proximally retracting a second branch sheath on the catheter to deploy the second branch portion of the prosthesis within the second branch vessel.
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30. A method of deploying first and second iliac branches of a self expandable prosthesis, comprising the steps of:
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positioning the first and second iliac branches of the prosthesis within the first and second iliac arteries, respectively, while the first and second iliac branches of the prosthesis are constrained by first and second respective retention structures;
withdrawing the first retention structure from the first branch and transluminally through the first iliac to permit the first branch to expand; and
withdrawing the second retention structure from the second branch and transluminally through the second iliac to permit the second branch to expand. - View Dependent Claims (31, 32)
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33. A deployment catheter for deploying a self expandable graft having a main vessel portion and first and second branch portions, comprising:
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an elongate, flexible body;
a first sheath for containing the main vessel portion of the graft;
a second sheath for containing the first branch portion of the graft; and
a third sheath for containing the second branch portion of the graft. - View Dependent Claims (34, 35, 37, 38)
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36. The combination of a deployment catheter and a bifurcation graft having a main portion and first and second branch portions, comprising:
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an elongate flexible body, having proximal and distal ends;
the body extending through the main portion and first branch portion of the graft such that the main portion of the graft is disposed distally of the first portion of the graft;
a first sheath on the body for containing the first branch portion; and
a second sheath for containing the second branch portion.
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39. A method of deploying a bifurcation graft at a bifurcation site in a vessel, comprising the steps of:
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introducing a catheter having the bifurcation graft and at least one removable graft retention structure thereon through a first percutaneous puncture;
deploying the graft at the site;
removing the catheter through the first percutaneous puncture; and
removing the removable graft retention structure through a second percutaneous puncture.
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Specification