EP0621015A1
Expired / Lapsed
EP
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Stent with a covering layer of elastic material and methods for applying the layer on the stent
Assignee: Schneider Europe GmbH
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Filing: 1993-04-23
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Granted: —
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Expires: 2013-04-23
Abstract
Abstract The stent comprises a cylindrical wall (1) formed by meshed wires (2) and a covering layer (3) of elastic material extending on a portion of its length, with an outer surface (4), and totally embracing the wire mesh.
Inventors
- 👤 Goran Lukic
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 04:26
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/82; A61F2/86; A61F2/90; A61F2002/072; A61F2002/075; A61F2220/00; A61F2220/0025; A61F2220/0075
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
64 words
A stent with a discontinuous expandable wall comprising on at least a portion of its length a continuous covering layer of elastic material with an outer surface surrounding the discontinuous wall, characterized in that the continuous covering layer (3) of elastic material is adhered to the said portion of the discontinuous wall (1) of the stent, being thereby intimately united with said wall portion.
Claim 2
Dependent Claim
33 words
A stent according to claim 1, characterized in that the continuous covering layer of elastic material extends at least partly radially within the said portion of the discontinuous wall (1) of the stent.
Claim 3
Dependent Claim
35 words
A stent according to claim 1 or claim 2, characterized in that the continuous covering layer (3) of elastic material extends around and inside the said portion of the discontinuous wall (1) of the stent.
Claim 4
Dependent Claim
26 words
A stent according to any preceeding claim, characterized in that the continuous covering layer is adhered to the discontinuous wall (1) by means of a binder.
Claim 5
Dependent Claim
22 words
A stent according to any preceeding claim, characterized in that the continuous covering layer is heat adhered to the discontinuous wall (1).
Claim 6
Dependent Claim
22 words
A stent according to any preceeding claim, characterized in that the continuous covering layer is chemically bonded to the discontinuous wall (1).
Claim 7
Dependent Claim
36 words
A stent according to any of claims 2 to 6, characterized in that the continuous covering layer is adhered to the discontinuous wall by radial pressure of the discontinuous wall (1) against the continuous covering layer.
Claim 8
Dependent Claim
45 words
A stent according to any of claims 2 to 7, characterized in that the continuous covering layer has a structured surface towards the discontinuous wall (1), and wherein the continuous covering layer is adhered to the discontinuous wall as a result of said structured surface.
Claim 9
Independent Claim
115 words
A method for applying the covering layer of the stent according to any of claims 1 to 8, characterized by the steps of : - radially contracting the stent, - inserting at least a portion of the contracted stent into a tube the inner surface of which has been previously done over with a lifting medium, - allowing the stent to radially expand in the tube, - wetting the assembly tube plus stent with an elastomeric polymerisable composition dissolved in a sufficient amount of solvent to permit wet forming, - evaporating the solvent, - polymerising the elastomeric composition in the tube, and - taking the layer covered portion of the stent out of the tube.
Claim 10
Dependent Claim
52 words
A method according to claim 9, characterized in that the tube the inner surface of which has been done over with a lifting medium is first wetted alone with the elastomeric composition added with solvent, and wherein the solvent is evaporated before the step of insertion of the stent into the tube.
Claim 11
Independent Claim
103 words
A method for applying the covering layer of the stent according to any of claims 1 to 8, characterized by the steps of : - doing over a roll on surface with a lifting medium, - coating said roll on surface with an elastomeric polymerisable composition dissolved in a sufficient amount of solvent to permit contact forming, - rolling at least a portion of the stent in expanded condition on said coated roll on surface, - withdrawing the stent from the roll on surface, - evaporating the solvent, and - polymerising the elastomeric composition adhered by contact on said portion of the stent.
Claim 12
Independent Claim
81 words
A method for applying the covering layer of the stent according to any of claims 1 to 8, characterized by the steps of : - forming a tube of predetermined length with an elastomeric polymerisable composition, - radially contracting the stent, - inserting into the tube a portion of the stent corresponding to said predetermined length of the tube, - allowing the stent to radially expand in the tube, and welding the surfaces of contact between the stent and the tube.
Claim 13
Independent Claim
88 words
A method for applying the covering layer of the stent according to any of claims 1 to 8, characterized by the steps of : - forming a tube of predetermined length with an elastomeric polymerisable composition, - coating the inside of the tube with an adhesive medium, - radially contracting the stent, - inserting into the tube a portion of the stent corresponding to said predetermined length of the tube, - allowing the stent to radially expand in the tube, and - allowing the adhesive medium to cure.
Claim 14
Independent Claim
112 words
A method for applying the covering layer of the stent according to any of claims 1 to 8, characterized by the steps of : - forming a tube of predetermined length with an elastomeric polymerisable composition, - coating the inside of the tube with an elastomeric polymerisable composition dissolved in a sufficient amount of solvent to permit contact forming, - radially contracting the stent, - inserting into the tube a portion of the stent corresponding to said predetermined length of the tube, - allowing the stent to radially expand in the tube, - evaporating the solvent, and - polymerising the elastomeric composition adhered by contact to the tube and to the stent.
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