Tapered strength rings on a bifurcated stent petal
First Claim
1. A bifurcated stent being expandable from an unexpanded state to an expanded state, wherein in the unexpanded state the stent has a diameter less than that of the diameter in the expanded state, the bifurcated stent comprising:
- a substantially tubular first stent body defining a first circumferential plane, a first outer surface, a first lumen and having a proximal end, a distal end, a first longitudinal axis extending therethrough, and having a side opening along the first circumferential plane;
a second stent body positioned adjacent to the side opening and engaged to first stent body, the second stent body comprising a plurality of interconnected expandable rings at least two of the rings having progressively differing widths, in the unexpanded state the at least two rings being positioned substantially within the first circumferential plane, in the expanded state the at least two rings being positioned external to the first circumferential plane and defining a secondary circumferential plane, a secondary lumen, and having a secondary longitudinal axis extending therethrough, the secondary lumen being in fluid communication with the first lumen, the secondary longitudinal axis forming an oblique angle with the primary longitudinal axis.
1 Assignment
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Accused Products
Abstract
A stent assembly comprises a second stent body and a substantially tubular first stent body defining a first lumen and containing a side branch opening. In an undeployed state, the second stent body is at least partially comprised of rings having peaks and spans between these peaks. In a deployed state, the rings of the second stent body define a second lumen opening in fluid communication with the first lumen. The second lumen is capable of having tapering strength and geometry and can extend and form an oblique angle relative to the longitudinal axis of the first stent body.
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Citations
20 Claims
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1. A bifurcated stent being expandable from an unexpanded state to an expanded state, wherein in the unexpanded state the stent has a diameter less than that of the diameter in the expanded state, the bifurcated stent comprising:
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a substantially tubular first stent body defining a first circumferential plane, a first outer surface, a first lumen and having a proximal end, a distal end, a first longitudinal axis extending therethrough, and having a side opening along the first circumferential plane;
a second stent body positioned adjacent to the side opening and engaged to first stent body, the second stent body comprising a plurality of interconnected expandable rings at least two of the rings having progressively differing widths, in the unexpanded state the at least two rings being positioned substantially within the first circumferential plane, in the expanded state the at least two rings being positioned external to the first circumferential plane and defining a secondary circumferential plane, a secondary lumen, and having a secondary longitudinal axis extending therethrough, the secondary lumen being in fluid communication with the first lumen, the secondary longitudinal axis forming an oblique angle with the primary longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A bifurcated stent assembly having an expanded state and an unexpanded state, the assembly comprising:
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a substantially tubular, first stent body defining a first lumen with a proximal end and a distal end, the first lumen positioned within a circumferential plane, having a first longitudinal axis extending therethrough and having a side opening along the circumferential plane;
and a second stent body;
the second stent body being connected to the first stent body, positioned adjacent to the side opening, and comprising a plurality of interconnected rings;
in the unexpanded state at least two of the rings being positioned substantially along the circumferential plane of the first stent body each of the at least two rings having a plurality of peaks and spans in between these peaks wherein the product of the number of peaks of one ring multiplied by the length of the span of that ring is equal to the product of number of peaks of a second ring multiplied by the length of the span of the second ring and;
in the expanded state, the interconnected rings of the second stent body are positioned farther away from each other than in the unexpanded state and define a second lumen and the second stent body is in fluid communication with the first fluid lumen. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A bifurcated stent assembly having an expanded state and an unexpanded state, the assembly comprising:
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a substantially tubular, first stent body defining a first lumen with a proximal end and a distal end, the first lumen positioned within a circumferential plane, having a first longitudinal axis extending therethrough and having a side opening along the circumferential plane;
and a second stent body;
the second stent body being connected to the first stent body, positioned adjacent to the side opening, and comprising a plurality of interconnected rings;
in the unexpanded state at least two of the rings being positioned substantially along the circumferential plane of the first stent body each of the at least two rings having a plurality of peaks and spans in between these peaks wherein the product of the number of peaks of one ring multiplied by the length of the span of that ring is greater than the product of number of peaks of a second ring multiplied by the length of the span of the second ring and;
in the expanded state, the interconnected rings of the second stent body are positioned farther away from each other than in the unexpanded state and define a second lumen and the second stent body is in fluid communication with the first lumen. - View Dependent Claims (19, 20)
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Specification