Coiled stent with locking ends
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorSharon Lam
Life of this patent
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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.
Claims5
An intraluminal stent implantable in a body lumen, comprising:
- a cylindrical body formed from at least one strip disposed along a longitudinal direction, having a first end and a second end perpendicular to the longitudinal edges of said strip, further having a tab and a slot for receiving a 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, wherein at least one said end of said at least one strip is radiopaque.
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;
- at least one ring capable of expanding from a first reduced diameter form to a second, expanded diameter form;
- attaching means for attaching said ring to one of said ends of said cylindrical stent body;
- whereby said ring undergoes irreversible plastic deformation when it is expanded from said first reduced diameter form to said second expanded diameter form, locking said cylindrical stent body in a second expanded diameter.
An intraluminal stent implantable in a body lumen, comprising:
- a body portion formed from a sheet, said sheet having a first longitudinal edge and a second longitudinal edge, further having a first end and a second end wherein said body portion is formed into a substantially cylindrical shape by joining said first longitudinal edge to said second longitudinal edge;
- a plurality of helical cuts in said sheet;
- a plurality of openings in said first end and said second end;
- means for expanding said first end and said second end from a first reduced diameter to a second expanded diameter, so that said first end and said second end are expanded from a first reduced diameter to a second expanded diameter, said first end and said second end undergoing irreversible plastic deformation and locking said stent in said second enlarged diameter form.
A method for repairing a patient's vasculature or other body lumen having an occluded or partially occluded portion, comprising:
- mounting an intravascular stent body on a catheter having means for expanding and contracting said stent body, said stent body as mounted on said catheter having a first reduced diameter;
- advancing said catheter to position said stent body across the site of repair;
- expanding said stent body at said site of repair to engage said patient's vasculature;
- expanding a first end and a second on said stent body for locking said first end and said second end in an adjustable, second expanded diameter;
- and
- withdrawing said catheter from said vasculature or other body lumen.
Dependencies are inferred from the claim text.