Woven stent/graft structure
First Claim
1. A combined stent/graft structure for repair of a body tube in a living body, the body tube having an inner surface, said combined stent/graft structure comprising:
- a textile graft adapted to enhance fluid integrity of the body tube, said graft having a generally tubular graft main portion with a graft main portion axis and first and second graft main portion ends, said graft main portion being formed, at least in part, by at least one graft yarn; and
a stent expandable between a first position permitting easy insertion of said stent into the body tube and a second position wherein said stent presses securely against the inner surface of the body tube, said stent in turn comprising a first elongate wire-shaped stent member having both a first stent member global axis and a first stent member local axis, said first stent member being integrally secured to said graft by said at least one graft yarn of which said graft is formed, substantial portions of said first stent member global axis forming a non-orthogonal angle with said graft main portion axis when projected into a plane containing said graft main portion axis, said first stent member having material properties preselected to support said graft when in said second position, said first stent member local axis being generally defined by centroids of adjacent cross-sections of said first stent member, said first stent member global axis being generally defined by a straight-line curve fit to said first stent member local axis in a coordinate system substantially coincident with said generally tubular graft main portion.
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Accused Products
Abstract
A combined stent/graft structure for repair of a body tube in a living body. The structure includes a textile graft adapted to enhance fluid integrity of the body tube and a stent expandable between a first position permitting easy insertion of the stent into the body tube and a second position wherein the stent presses securely against the inside surface of the body tube. The stent includes a first elongate wire-shaped stent member with both a stent member global axis and a stent member local axis, and is integrally secured to the graft by at least one graft yarn of which the graft is formed. Substantial portions of the first stent member global axis form a non-orthogonal angle with the graft main portion axis when projected into a plane containing the graft main portion axis. A woven textile is also part of the invention as is a method of manufacturing such a woven textile, which can be used to produce stent/graft structures according to the invention.
474 Citations
42 Claims
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1. A combined stent/graft structure for repair of a body tube in a living body, the body tube having an inner surface, said combined stent/graft structure comprising:
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a textile graft adapted to enhance fluid integrity of the body tube, said graft having a generally tubular graft main portion with a graft main portion axis and first and second graft main portion ends, said graft main portion being formed, at least in part, by at least one graft yarn; and a stent expandable between a first position permitting easy insertion of said stent into the body tube and a second position wherein said stent presses securely against the inner surface of the body tube, said stent in turn comprising a first elongate wire-shaped stent member having both a first stent member global axis and a first stent member local axis, said first stent member being integrally secured to said graft by said at least one graft yarn of which said graft is formed, substantial portions of said first stent member global axis forming a non-orthogonal angle with said graft main portion axis when projected into a plane containing said graft main portion axis, said first stent member having material properties preselected to support said graft when in said second position, said first stent member local axis being generally defined by centroids of adjacent cross-sections of said first stent member, said first stent member global axis being generally defined by a straight-line curve fit to said first stent member local axis in a coordinate system substantially coincident with said generally tubular graft main portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 36, 37, 38)
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23. A combined stent/graft structure for repair of a body tube in a living body, the body tube having an inner surface, said combined stent/graft structure comprising:
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a woven graft adapted to enhance fluid integrity of the body tube, said graft having a generally tubular graft main portion with a graft main portion axis and first and second graft main portion ends, said graft being formed from a plurality of warp yarns and a plurality of fill yarns which are substantially orthogonal to said plurality of warp yarns; and a stent expandable between a first position permitting easy insertion of said stent into the body tube and a second position wherein said stent presses securely against the inside surface of the body tube, said stent in turn comprising a first elongate wire-shaped stent member having a plurality of undulations, said first stent member being integrally secured to said graft at a first plurality of interweave points, said first stent member being secured by at least one warp yarn at each of said first plurality of interweave points, said first plurality of interweave points being spaced circumferentially about said graft and being separated from each other by a predetermined number of said warp yarns. - View Dependent Claims (24, 25, 26, 39, 40)
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27. A combined stent/graft structure for repair of a body tube in a living body, the body tube having an inner surface, said combined stent/graft structure comprising:
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a woven graft adapted to enhance fluid integrity of the body tube, said graft having a generally tubular graft main portion with a graft main portion axis and first and second graft main portion ends, said graft being formed from a plurality of warp yarns and a plurality of fill yarns which are substantially orthogonal to said plurality of warp yarns; and a stent expandable between a first position permitting easy insertion of said stent into the body tube and a second position wherein said stent presses securely against the inside surface of the body tube, said stent in turn comprising a first elongate wire-shaped stent member having a plurality of undulations, portions of said undulations being substantially parallel to said warp yarns at a plurality of securing portions, said first stent member being integrally secured to said graft at a first plurality of interweave points, said first stent member being secured by at least one fill yarn engaging a respective one of said securing portions at each of said first plurality of interweave points, said first plurality of interweave points being spaced circumferentially about said graft and being separated from each other by a predetermined number of said warp yarns.
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28. A woven textile comprising:
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(a) a plurality of warp yarns; (b) a plurality of fill yarns which are substantially orthogonal to said plurality of warp yarns and form a base fabric therewith; and (c) an elongate wire-shaped structural member having both a member global axis and a member local axis, said member local axis being generally defined by centroids of adjacent cross-sections of said structural member, said member global axis being generally defined by a straight-line curve fit to said member local axis in a coordinate system which is substantially coplanar with said warp and fill yarns, said structural member being integrally secured to said base fabric at a plurality of interweave points, said member being secured by at least one warp yarn at each of said interweave points, adjacent interweave points being separated by a predetermined number of said fill yarns and a predetermined number of said warp yarns which together determine a substantially non-orthogonal angle a between said member global axis and said warp yarns and a complimentary substantially non-orthogonal angle β
=90°
-α
between said member global axis and said fill yarns. - View Dependent Claims (29, 30, 31, 32, 33, 34, 41, 42)
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35. A woven textile comprising:
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(a) a plurality of warp yarns; (b) a plurality of fill yarns which are substantially orthogonal to said plurality of warp yarns and form a base fabric therewith; and (c) an elongate wire-shaped structural member having both a member global axis and a member local axis, said member local axis being generally defined by centroids of adjacent cross-sections of said structural member, said member global axis being generally defined by a straight-line curve fit to said member local axis in a coordinate system which is substantially coplanar with said warp and fill yarns, said structural member having a plurality of securing portions which are positioned substantially parallel to said warp yarns, said structural member being integrally secured to said base fabric at a plurality of interweave points, said member being secured by at least one fill yarn engaging a respective one of said securing portions at each of said interweave points, adjacent interweave points being separated by a predetermined number of said fill yarns and a predetermined number of said warp yarns which together determine a substantially non-orthogonal angle a between said member global axis and said warp yarns and a complimentary substantially non-orthogonal angle β
=90°
-α
between said member global axis and said fill yarns.
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Specification