Expandable coil stent
First Claim
Patent Images
1. A coil stent having an expanded state and an unexpanded state, the stent comprising:
- alternating serpentine portions and arcing portions, the serpentine portions and arcing portions forming a plurality of loops which wind in a substantially helical direction about a longitudinal axis, the arcing portions winding helically about the longitudinal axis, the serpentine portions having bends which extend along a surface of the stent in a non-helical direction,wherein each loop extends 360 degrees about the longitudinal axis and consists of one arcing portion and one serpentine portion.
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Abstract
An implantable coil stent comprises at least a first curved segment and a second curved segment which arc about the longitudinal axis of the stent. An expandable link extends between the second end of the first curved segment and the first end of the second curved segment.
68 Citations
20 Claims
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1. A coil stent having an expanded state and an unexpanded state, the stent comprising:
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alternating serpentine portions and arcing portions, the serpentine portions and arcing portions forming a plurality of loops which wind in a substantially helical direction about a longitudinal axis, the arcing portions winding helically about the longitudinal axis, the serpentine portions having bends which extend along a surface of the stent in a non-helical direction, wherein each loop extends 360 degrees about the longitudinal axis and consists of one arcing portion and one serpentine portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A coil stent comprising a plurality of loops that substantially form a helix about a longitudinal axis, each loop of the plurality of loops extending 360 degrees about the longitudinal axis and having a plurality of arcing portions and a plurality of serpentine portions, serpentine portions on each loop being separated from one another by 180 degrees about the longitudinal axis.
- 12. A coil stent having a plurality of loops, each loop of the plurality of loops having at least one arcing portion and at least one serpentine portion, serpentine portions being separated by an arcing portion, the arcing portion extending continuously in a helical direction for 90 degrees or more about the longitudinal axis.
Specification