Stretchable anti-buckling coiled-sheet stent
First Claim
1. A stent-graft, comprising:
- a tubular graft having a peripheral wall defining a periphery and a lumen therein, the lumen extending axially between first and second ends of the tubular graft;
an exo-skeleton attached to the peripheral wall, the exo-skeleton comprising one or more serpentine elements, each serpentine element extending both peripherally and axially along at least a portion of the peripheral wall; and
a stent on the first end for substantially anchoring the first end within a body passage.
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Accused Products
Abstract
A stent-graft having an exo-skeleton attached to a tubular graft, the tubular graft having a peripheral wall defining a lumen therein extending between first and second ends. The exo-skeleton may assume contracted and enlarged conditions, and includes one or more serpentine elements, each extending both peripherally and axially along at least a portion of the peripheral wall. Coiled-sheet stents are provided on the ends of the tubular graft for anchoring the ends within a body passage. Each serpentine element is a zigzag structure extending peripherally about the peripheral wall, with a plurality of serpentine elements distributed axially along the peripheral wall. The serpentine elements are individually attached to the peripheral wall and/or connector elements may extend between adjacent serpentine elements. Alternatively, each serpentine element may define a generally sinusoidal shape extending axially along the peripheral wall. The tubular graft may have a bifurcated end from which a tubular graft extension segment may extend and to which a docking limb may be attached. A plurality of serpentine elements may also be attached to the extension segment and the docking limb.
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Citations
53 Claims
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1. A stent-graft, comprising:
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a tubular graft having a peripheral wall defining a periphery and a lumen therein, the lumen extending axially between first and second ends of the tubular graft;
an exo-skeleton attached to the peripheral wall, the exo-skeleton comprising one or more serpentine elements, each serpentine element extending both peripherally and axially along at least a portion of the peripheral wall; and
a stent on the first end for substantially anchoring the first end within a body passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A stent-graft, comprising:
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a tubular graft having a peripheral wall defining a periphery and a lumen therein, the lumen extending axially between first and second ends of the tubular graft; and
a plurality of serpentine elements attached to and distributed axially along the peripheral wall in a predetermined configuration for providing articulation of the tubular graft between adjacent serpentine elements, each serpentine element defining a zigzag shape extending substantially peripherally about the peripheral wall of the tubular graft. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A stent-graft for placement within a bifurcation, comprising:
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a first tubular graft segment having a first end and a second bifurcated end, the first tubular graft segment having a first peripheral wall;
a second tubular graft segment extending from the second bifurcated end, the second tubular graft segment having a second peripheral wall; and
an exo-skeleton attached to at least one of the first and second peripheral walls, the exo-skeleton comprising one or more serpentine elements, each serpentine element extending both peripherally and axially along at least a portion of the respective peripheral wall to which it is attached. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45)
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46. A method for repairing an aneurysm at a bifurcation between a first main vessel and second and third branch vessels, comprising the steps of:
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percutaneously introducing a stent-graft into a vessel in a contracted condition, the stent-graft comprising a flexible exo-skeleton attached to a tubular graft;
advancing the stent-graft across the bifurcation between undiseased portions of the first and second vessels;
expanding the stent-graft to an enlarged condition, the exo-skeleton comprising serpentine elements retaining a lumen of the tubular graft substantially open;
occluding the third vessel proximate the bifurcation; and
implanting a bypass graft between the second and third vessel downstream from the bifurcation.
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47. A stretchable stent, comprising:
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a coiled-up sheet having overlapping inner and outer longitudinal sections, and being radially expandable between a first size and one or more larger sizes, the coiled-up sheet defining a periphery in a plane substantially perpendicular to a longitudinal axis thereof;
a plurality of teeth extending from the inner longitudinal section for engaging openings in the outer longitudinal section to selectively secure the coiled-up sheet in the one or more larger sizes; and
a stretchable portion comprising a plurality of resilient mesh elements extending along a portion of the coiled-up sheet, the mesh elements being adapted to partially recoil about the periphery of the coiled-up sheet when the stent is subjected to radially compressive forces. - View Dependent Claims (48, 49, 50, 51, 52, 53)
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Specification