Patent EP0565251A1 successfully refreshed from Google Patents.
EP0565251A1
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EP
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Vascular stent
Assignee: Cook Inc
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Filing: 1993-03-18
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Granted: —
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Expires: 2013-03-18
Abstract
Abstract A vascular stent (8) includes a continuous wire which is formed into a substantially tubular body having a plurality of oblong, open cells which are staggered around the circumference of the tube. When the body is formed in its unexpanded state, the long sides of each oblong cell are arranged substantially parallel to the longitudinal axis of the tubular body. Adjoining cells may then be bonded together at a point (2,2' ;3,3' ;5,5' ;7,7' between adjacent parallel sides on a cell. When the body is expanded, the adjacent sides of each cell extend oblique to the longitudinal axis of the body.
Inventors
- 👤 Arthur B. Fontaine
- 👤 Michael D. Dake
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:12
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/88; A61F2/95; A61F2/958; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30131; A61F2002/30667; A61F2002/30677; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013; A61F2250/00; A61F2250/0058; A61F2250/0067
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
75 words
A vascular stent comprising a tubular body with a plurality of cells, each with a plurality of sides formed by wire, CHARACTERISED IN THAT the sides of the cells extend substantially parallel to a longitudinal axis of the tubular body when the latter is in an unexpanded state, and in that the sides of at least certain of the cells extend obliquely to the longitudinal axis when the tubular body is in an expanded state.
Claim 2
Dependent Claim
75 words
A vascular stent comprising a tubular body with a plurality of cells, each with a plurality of sides formed by wire, CHARACTERISED IN THAT the sides of the cells extend substantially parallel to a longitudinal axis of the tubular body when the latter is in an unexpanded state, and in that the sides of at least certain of the cells extend obliquely to the longitudinal axis when the tubular body is in an expanded state.
Claim 3
Dependent Claim
50 words
A stent according to claim 1, CHARACTERISED IN THAT adjacent sides of at least certain sides of adjacent cells are interconnected by coupling or fixing together in such a manner that the stent comprises a plurality of interconnected cells which when in an expanded state are formed into rhomboid shape.
Claim 4
Dependent Claim
37 words
A stent according to claim 2, CHARACTERISED IN THAT the plurality of cells are formed from a continuous wire shaped into a substantially tubular body with adjacent cells whose adjacent sides have been coupled or fixed together.
Claim 5
Dependent Claim
23 words
A stent according to claim 3, CHARACTERISED IN THAT the said adjacent sides are spot welded together at one distinct location per side.
Claim 6
Dependent Claim
38 words
A stent according to claim 3 or 4, CHARACTERISED IN THAT upon expansion of the stent, each said adjacent side rotates about the point of the coupling or fixing, in order to form the said rhomboid shaped cells.
Claim 7
Dependent Claim
32 words
A stent according to claim 3, 4 or 5, CHARACTERISED IN THAT upon expansion, the continuous wire is deformed past its elastic limit, whereby the expanded tube will retain its expanded state.
Claim 8
Dependent Claim
25 words
A stent according to any one preceding claim, CHARACTERISED IN THAT the wire is of substantially semicircular cross-section with the flat side thereof inward facing.
Claim 9
Independent Claim
73 words
A method of making a vascular stent, comprising the steps of forming a wire into a substantially sinusoidal wave pattern, and wrapping the wire around a mandril to form the stent, CHARACTERISED IN THAT the said wave pattern has substantially straight portions which are substantially aligned with the longitudinal axis of the mandril, and in that the wire optionally has a semicircular cross-section with the flat portion facing the interior of the stent.
Claim 10
Independent Claim
73 words
A method of making a vascular stent, comprising the steps of forming a wire into a substantially sinusoidal wave pattern, and wrapping the wire around a mandril to form the stent, CHARACTERISED IN THAT the said wave pattern has substantially straight portions which are substantially aligned with the longitudinal axis of the mandril, and in that the wire optionally has a semicircular cross-section with the flat portion facing the interior of the stent.
Claim 11
Dependent Claim
57 words
A method according to claim 8, further CHARACTERISED BY the step of coupling or bonding together at discrete locations on adjacent sides of adjacent cells so that the stent is formed into a plurality of interconnected cells each of which can rotate about the said discrete locations to form a rhomboid shape upon expansion of the stent.
Claim 12
Dependent Claim
73 words
A method according to claim 9, CHARACTERISED IN THAT the substantially sinusoidally shaped wire is substantially U-shaped arranged so that upon winding longitudinally spaced valleys coincide with longitudinally spaced peaks, and in that the peaks and valleys are coupled or fixed together, and in that substantially straight adjacent cells sides of the U-shaped wires are fixed together at specific locations about which the wire rotates upon expansion to form the rhomboid shaped cells.
References Cited (Backward Citations)
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