Slide-and-lock stent
First Claim
Patent Images
1. A slide-and-lock stent comprising:
- at least two circumferentially adjacent radial elements, each radial element comprising an elongate rail, a closed loop, and a neck portion disposed between the elongate rail and the closed loop, the elongate rail comprising a deflectable tooth, the closed loop disposed at one end of the elongate rail and defining an engagement slot, wherein the neck portion is narrower than the elongate rail and the closed loop, and wherein the engagement slot from one radial element is sized to accommodate the closed loop from a circumferentially adjacent radial element, thereby allowing assembly of the at least two circumferentially adjacent radial elements without welding or bonding,wherein the engagement slot from said one radial element is further configured to slidably engage the elongate rail of said circumferentially adjacent radial element and to cause the deflectable tooth of the slidably engaged elongate rail to deflect as it passes therethrough such that said stent achieves expansion in a circumferential axis with reduced recoil.
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Accused Products
Abstract
The invention relates to an expandable stent comprising circumferentially adjacent modules. The modules comprise longitudinally adjacent slide-and-lock radial elements which permit one-way sliding of the radial elements from a collapsed diameter to an expanded/deployed diameter, but inhibit radial recoil from the expanded diameter.
390 Citations
44 Claims
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1. A slide-and-lock stent comprising:
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at least two circumferentially adjacent radial elements, each radial element comprising an elongate rail, a closed loop, and a neck portion disposed between the elongate rail and the closed loop, the elongate rail comprising a deflectable tooth, the closed loop disposed at one end of the elongate rail and defining an engagement slot, wherein the neck portion is narrower than the elongate rail and the closed loop, and wherein the engagement slot from one radial element is sized to accommodate the closed loop from a circumferentially adjacent radial element, thereby allowing assembly of the at least two circumferentially adjacent radial elements without welding or bonding, wherein the engagement slot from said one radial element is further configured to slidably engage the elongate rail of said circumferentially adjacent radial element and to cause the deflectable tooth of the slidably engaged elongate rail to deflect as it passes therethrough such that said stent achieves expansion in a circumferential axis with reduced recoil. - 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)
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28. A slide-and-lock stent, comprising a tubular member having a longitudinal axis and a circumference, said tubular member comprising:
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a first module comprising a pair of first radial elements and a first flexible linkage element, the first radial elements extending at least partially along the circumference, the first flexible linkage element interconnecting the pair of first radial elements, each first radial element comprising a first elongate rail, a first neck portion and a first closed loop disposed at a distal end of the first elongate rail, the first neck portion being disposed intermediate the first elongate rail and the first closed loop and being narrower than the first elongate rail and the first closed loop; and a second module comprising a pair of second radial elements and a second flexible linkage element, the second radial elements extending at least partially along the circumference, the second flexible linkage element interconnecting the pair of second radial elements each second radial element comprising a second elongate rail, a second neck portion and a second closed loop disposed at a distal end of the second elongate rail, the second neck portion being disposed intermediate the second elongate rail and the second closed loop and being narrower than the second elongate rail and the second closed loop, such that slots of the second closed loops of the second module can receive the first closed loops of the first module to slidably interconnect the second closed loops of the second module with the first elongate rails of the first module without welding or bonding, the tubular member achieving circumferential expansion with reduced recoil. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A slide-and-lock stent comprising:
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first and second radial elements extending at least partially about a circumference of the stent, the first and second radial elements each comprising an elongate rail, a flexible linkage element, and a closed loop, the closed loop of the each of the first and second radial elements being disposed at a free end of the respective elongate rail of each of the first and second radial elements, and the flexible linkage element of each of the first and second radial elements being disposed at an opposing end of the respective elongate rail, the closed loop defining a slot, the first radial element further comprising a neck portion between the elongate rail and the closed loop, the first radial element narrowing at the neck portion thereof such that the closed loop of the first radial element can be inserted into the slot of the closed loop of the second radial element, wherein the first and second radial elements are slidably interconnectable without welding or bonding, and the stent achieving circumferential expansion with reduced recoil. - View Dependent Claims (42, 43, 44)
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Specification