EP0618059A1
Expired / Lapsed
EP
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Method for manufacturing an extrusion profile with variable properties along its length and catheters made in accordance with this method
Assignee: Cordis Europa NV
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Filing: 1994-03-30
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Granted: —
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Expires: 2014-03-30
Abstract
Abstract Method for manufacturing an extrusion profile comprising simultaneously conveying a number of, in the circumferential direction of the profile distributed streams of material of at least two different compositions to a moulding-nozzle (2) and of making these streams flow together in the moulding-nozzle (2). At least one of the streams is turned on and/or off in a controlled manner and the combined stream of materials is allowed to cool off to form an extrusion profile (3). The catheter is a tube-like extrusion profile, containing at least one section the wall of which comprises bands of material of different composition, extending in lengthwise direction.
Inventors
- 👤 Johannes Bos
- 👤 Frans Mous
- 👤 Johannes Gerardus Maria Van Muiden
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 06:40
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/16; B29C48/18; B29C48/19; B29C48/25; B29C48/92; B29C2948/00; B29C2948/92; B29C2948/92504; B29C2948/92561; B29C2948/9258; B29C2948/9259; B29C2948/926; B29C2948/92819; B29C2948/92857; B29C2948/92876; B29C2948/92885; B29C2948/92904; B29C48/12; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29L; B29L2031/00; B29L2031/753; B29L2031/7542
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
103 words
Method for manufacturing a tube-like extursion profile with an annular cross-section, comprising simultaneously conveying a number of, in the circumferential direction of the profile divided streams of material of at least two different compositions to a moulding-nozzle, wherein the streams of material of the same composition, are supplied alternating with those of another composition, distributed evenly in the circumferential direction, making these streams flow together in the moulding-nozzle whereby at least one of the streams can be turned on and/or off in a controlled manner during the extrusion method and allowing the combined stream of materials to cool off into an extrusion profile.
Claim 2
Dependent Claim
26 words
Method according to claim 1, wherein the streams which are turned on and/or off in a controlled manner are streams of material of the same composition.
Claim 3
Dependent Claim
28 words
Method according to claim 2, wherein the compositions of the materials differ in such way that the stiffness of those materials is different in the cooled off state.
Claim 4
Dependent Claim
23 words
Method according to claim 3, wherein at least one of the streams is a stream of solid material such as a fibre bundle.
Claim 5
Dependent Claim
18 words
Method according to any of the claims 1 to 3, wherein all streams are streams of molten material.
Claim 6
Dependent Claim
35 words
Catheter with a tube-like extrusion profile manufactured by the method according to any of the preceding claims containing at least one section the wall of which consists of longitudinal bands of material of different composition.
Claim 7
Dependent Claim
20 words
Catheter as claimed in claim 6, wherein the cross-section of at least two adjoining bands varies inversely in longitudinal direction.
Claim 8
Dependent Claim
41 words
Catheter as claimed in claim 7, wherein the bands comprise materials of different stiffness and wherein the total cross-section of the bands made of the stiffer material is smaller in the distal end-section of the catheter than in the remaining part.
Claim 9
Dependent Claim
27 words
Catheter as claimed in claim 8, wherein the cross-section and/or the number of bands made of the stiffer material decreases from the proximal to the distal end.
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