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US 2014/0207227 A1Published application
Stent with positioning arms
AssigneeCook Medical Technologies LLC
InventorThomas W. McGhie
Life of this patent
Estimating the term…
Abstract
A stent is provided with arms for positioning the stent between two passageways. The stent may also be a stent-graft with a transition between a covered portion and an uncovered portion that is positioned relative to the junction between the two passageways. The arms are self-expanding and are biased outward from the tubular wall of the stent structure. The arms engage the wall of the first passageway around the junction to the second passageway to position a portion of the stent in the first passageway and another portion of the stent in the second passageway.
Claims21
A stent-graft, comprising:
- a stent structure comprising a first end, a second end, and a tubular wall extending therebetween, said tubular wall defining a lumen extending therethrough between said first and second ends, and said stent structure being expandable from a collapsed configuration to an expandable configuration;
- a first portion of said stent structure extending toward said first end being uncovered by a graft, and a second portion of said stent structure extending toward said second end being covered by said graft, said first portion thereby being adapted to allow a fluid to pass through said tubular wall, and said second portion thereby being adapted to isolate said fluid passing through said lumen of said stent structure, said graft substantially preventing fluid flow through said tubular wall along said second portion;
- and
- an arm disposed adjacent a transition between said first and second portions, said arm being self-expanding outward from said tubular wall, said arm thereby being adapted to engage a wall of a first passageway to position said first portion within said first passageway and position said second portion within a second passageway, said second passageway opening into said first passageway at said wall.
1 more element
A stent, comprising:
- a stent structure comprising a first end, a second end, and a tubular wall extending therebetween, said tubular wall defining a lumen extending therethrough between said first and second ends, and said stent structure being expandable from a collapsed configuration to an expandable configuration;
- and
- an arm disposed between said first end and said second end, said arm being self-expanding outward from said tubular wall, said arm thereby being adapted to engage a wall of a first passageway to position said first portion within said first passageway and position said second portion within a second passageway, said second passageway opening into said first passageway at said wall;
- wherein said stent structure comprises a series of zig-zag rings, said arm being connected at one end to one side of one of said zig-zag rings and extending through said zig-zag ring, a free end of said arm extending past an opposing side of said zig-zag ring, and an adjacent zig-zag ring along said opposing side being spaced farther from said zig-zag ring than an adjacent zig-zag ring along said one side, said free end being disposed within a space between said zig-zag ring and said adjacent zig-zag ring along said opposing side;
- and
- wherein said free end of said arm extending past said opposing side of said zig-zag ring comprises an enlarged portion with a width greater than a width of said arm extending through said zig-zag ring and a width of each strut forming said zig-zag ring.
3 more elements
Dependencies are inferred from the claim text.