Coiled stent with locking ends
First Claim
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1. An intraluminal stent implantable in a body lumen, comprising:
- a cylindrical stent body having a first reduced diameter and an adjustable second expanded diameter;
a first end and a second end on said cylindrical stent body;
means for expanding said cylindrical stent body from said first reduced diameter to said adjustable second expanded diameter so that said cylindrical stent body engages said body lumen;
means for expanding said first end and said second end from a first reduced diameter to an adjustable, second expanded diameter, so that said first end and said second end lock said cylindrical stent body in an expanded configuration;
means for locking said first end and said second end in said second expanded diameter;
said locking means including at least one ring having at least a pair of overlapping edges; and
a plurality of teeth on at least one of said overlapping edges;
whereby said rings are expanded from said first diameter to said adjustable, second expanded diameter so that said teeth engage in an interlocking relationship to hold said rings in said second expanded diameter configuration.
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Abstract
An intravascular stent comprising a cylindrical body capable of expansion having end assemblies capable of locking in an expanded state. The end assemblies may have a series of tabs and apertures that interlock and rotate as the stent ends expand to an open position to support a section of vasculature or other body lumen. The stent is bio-compatible, may be bio-erodible, and capable of localized drug delivery.
539 Citations
27 Claims
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1. An intraluminal stent implantable in a body lumen, comprising:
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a cylindrical stent body having a first reduced diameter and an adjustable second expanded diameter; a first end and a second end on said cylindrical stent body; means for expanding said cylindrical stent body from said first reduced diameter to said adjustable second expanded diameter so that said cylindrical stent body engages said body lumen; means for expanding said first end and said second end from a first reduced diameter to an adjustable, second expanded diameter, so that said first end and said second end lock said cylindrical stent body in an expanded configuration; means for locking said first end and said second end in said second expanded diameter; said locking means including at least one ring having at least a pair of overlapping edges; and a plurality of teeth on at least one of said overlapping edges; whereby said rings are expanded from said first diameter to said adjustable, second expanded diameter so that said teeth engage in an interlocking relationship to hold said rings in said second expanded diameter configuration. - View Dependent Claims (2, 3, 4, 5)
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6. An intraluminal stent implantable in a body lumen, comprising:
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a cylindrical body portion formed of a sheet having longitudinally extending edges, further having a first end and a second end perpendicular to the longitudinal edges; a plurality of slots on said first end and second end of said sheet; a pair of locking rings, each having; at least a pair of overlapping edges; and a plurality of teeth on at least one of said overlapping edges; whereby said rings are expanded from a first diameter to an adjustable, second expanded diameter so that said teeth engage in an interlocking relationship to hold said rings in said adjustable, second expanded diameter form; whereby said slots receive said rings. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An intraluminal stent implantable in a body lumen, comprising:
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a cylindrical body formed from a plurality of strips disposed along a longitudinal direction;
each of said strips having a first end and a second end perpendicular to the longitudinal edges of said strip;
said stent further having a tab and a slot for receiving said tab located at the first end and the second end, said body and said ends further having a first reduced diameter and an adjustable second expanded diameter; andsaid plurality of said strips, arranged adjacent to one another, interconnected at said first end and said second end to one another to form said cylindrical body. - View Dependent Claims (21, 22, 23, 24)
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25. A method for repairing a patient'"'"'s vasculature or other body lumen having an occluded or partially occluded portion, comprising:
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mounting a cylindrical stent body on a catheter, said cylindrical stent body having a first reduced diameter and an adjustable, expanded second diameter; advancing said catheter in said patient'"'"'s vasculature to position said stent body across the site of repair; expanding said body of said stent at said site of repair; checking said expanded second diameter and placement of said stent in relation to said site of repair by using flouroscopy; contracting said stent body to said first, reduced diameter form; and withdrawing said catheter and stent from the vasculature or other body lumen. - View Dependent Claims (26)
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27. The method of claim 28, wherein said method steps for expanding, checking, and contracting said cylindrical stent body comprises decreasing the length of said stent.
Specification