Expandable stent with sliding and locking radial elements
First Claim
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1. An expandable intraluminal stent, comprising:
- a tubular member comprising a clear through-lumen, and having proximal and distal ends and a longitudinal length defined there between, a circumference, and a diameter which is adjustable between at least a first collapsed diameter and at least a second expanded diameter, said tubular member comprising;
at least one module comprising a series of radial elements, wherein each radial element defines a portion of the circumference of the tubular member and wherein no radial element overlaps with itself in either the first collapsed diameter or the second expanded diameter;
at least one articulating mechanism which permits one-way sliding of the radial elements from the first collapsed diameter to the second expanded diameter, but inhibits radial recoil from the second expanded diameter; and
a frame element which surrounds at least one radial element in each module.
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Abstract
The present invention provides a lumen support stent with a clear through-lumen for use in a body lumen. The stent is formed from at least one series of sliding and locking radial elements and at least one ratcheting mechanism comprising an articulating element and a plurality of stops. The ratcheting mechanism permits one-way sliding of the radial elements from a collapsed diameter to an expanded diameter, but inhibits radial recoil from the expanded diameter.
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Citations
29 Claims
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1. An expandable intraluminal stent, comprising:
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a tubular member comprising a clear through-lumen, and having proximal and distal ends and a longitudinal length defined there between, a circumference, and a diameter which is adjustable between at least a first collapsed diameter and at least a second expanded diameter, said tubular member comprising;
at least one module comprising a series of radial elements, wherein each radial element defines a portion of the circumference of the tubular member and wherein no radial element overlaps with itself in either the first collapsed diameter or the second expanded diameter;
at least one articulating mechanism which permits one-way sliding of the radial elements from the first collapsed diameter to the second expanded diameter, but inhibits radial recoil from the second expanded diameter; and
a frame element which surrounds at least one radial element in each module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification