GB2043201A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Method and apparatus for making tubular products such as catheters
Assignee: Surgimed AS
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Filing: 1980-02-18
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Granted: —
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Expires: 2000-02-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-22 16:13
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/0012
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
197 words
A method of preparing a tubular product, in particular for making catheters, said tubular product including an inner plastic layer, an outer plastic layer, and a wire sheathing embedded therebe-50 tween, and preferably including braided or cross-wound wires, the method comprising the steps of applying said inner plastic layer onto a core wire as a plastic coating thereon, and applying said wire sheathing onto said plastic coating as a continuous 55 structure thereon, and the method being characte-• rized by further comprising the steps of: locally removing said wire sheathing at spaced locations, thereby providing defined spaced circumferential areas without said wire sheating and inter-60 mediate areas including said wire sheathing, applying said outer plastic layer as a continuous cover over said spaced and intermediate areas, thereby providing a strand structure covered by said outer plastic layer, 65 cutting said strand structure - possibly at a later time - at the region of one axial limitation of each of said defined spaced areas without wire sheathing, thereby providing strand pieces, one end portion of each strand piece being without said wire sheathing, 70 and removing said core wire from said strand pieces to provide said tubular product.
Claim 2
Independent Claim
197 words
A method of preparing a tubular product, in particular for making catheters, said tubular product including an inner plastic layer, an outer plastic layer, and a wire sheathing embedded therebe-50 tween, and preferably including braided or cross-wound wires, the method comprising the steps of applying said inner plastic layer onto a core wire as a plastic coating thereon, and applying said wire sheathing onto said plastic coating as a continuous 55 structure thereon, and the method being characte-• rized by further comprising the steps of: locally removing said wire sheathing at spaced locations, thereby providing defined spaced circumferential areas without said wire sheating and inter-60 mediate areas including said wire sheathing, applying said outer plastic layer as a continuous cover over said spaced and intermediate areas, thereby providing a strand structure covered by said outer plastic layer, 65 cutting said strand structure - possibly at a later time - at the region of one axial limitation of each of said defined spaced areas without wire sheathing, thereby providing strand pieces, one end portion of each strand piece being without said wire sheathing, 70 and removing said core wire from said strand pieces to provide said tubular product.
Claim 3
Dependent Claim
50 words
The method of claim 1, characterized in that said step of locally removing the wire sheathing 75 includes a grinding operation, while holding a segment of said core wire with said plastic coating and said continuous wire sheathing structure thereon, in a tensioned condition between two spaced clamping points. 80
Claim 4
Independent Claim
133 words
A method of manufacturing an elongate stock product, in particular for further processing into catheters, said product in including an inner plastic layer, an outer plastic layer, and a wire sheathing embedded therebetween, the method comprising 85 the steps of applying said inner plastic layer onto a core wire as a plastic coating thereon, and applying said wire sheathing onto said plastic coating as a continuous structure thereon, and the method being characterized by by comprising the steps of: 90 locally removing said wire sheathing at spaced locations, thereby providing defined spaced circumferential areas without wire sheathing and intermediate areas including said wire sheathing, and applying said outer plastic layer over said spaced 95 and intermediate areas thereby providing said elongate stock product as a strand structure covered by said outer plastic layer.
Claim 5
Independent Claim
133 words
A method of manufacturing an elongate stock product, in particular for further processing into catheters, said product in including an inner plastic layer, an outer plastic layer, and a wire sheathing embedded therebetween, the method comprising 85 the steps of applying said inner plastic layer onto a core wire as a plastic coating thereon, and applying said wire sheathing onto said plastic coating as a continuous structure thereon, and the method being characterized by by comprising the steps of: 90 locally removing said wire sheathing at spaced locations, thereby providing defined spaced circumferential areas without wire sheathing and intermediate areas including said wire sheathing, and applying said outer plastic layer over said spaced 95 and intermediate areas thereby providing said elongate stock product as a strand structure covered by said outer plastic layer.
Claim 6
Dependent Claim
19 words
The method of claim 3, characterized by further comprising the step of windng up said 100 covered strand structure.
Claim 7
Dependent Claim
61 words
The method of claim 3 or 4, characterized by further comprising the steps of cutting said covered strand structure at the region of one limitation of each of said defined spaced areas without wire 105 sheathing, thereby providing strand pieces, one end portion of each strand piece being without said wire sheathing, and removing said core wire from said strand pieces.
Claim 8
Dependent Claim
50 words
The method of claim 3,4 or 5, characterized in 110 that said step of locally removing the wire sheathing includes a grinding operation, while holding a length of said core wire with said plastic coating and said wire sheathing thereon, in a tensioned condition between two spaced clamping points. 115
Claim 9
Dependent Claim
171 words
An apparatus for locally removing exterior wire sheathings on a strand member, in accordance with the method of claim 2 or 6, the apparatus being characterized by comprising two clamping collets rotatably supported in 120 spaced relation and axially aligned along a common main axis, said collets being adapted to be powered to rotate synchronously about said main axis while clamping a length of said strand member in a tensioned condition between said collets, 125 at least one support sleeve arranged between said two collets and having a through going guide opening adapted to provide lateral support for said strand member when tensioned between said collets and threaded through said guide opening, a central 130 axis of said guide opening being retained to coincide 5 GB 2 043 201 A 5 with said main axis, and a grinding assembly supported in a mounting which is displaceable at least in a transverse direction toward and away from said main axis at the area 5 adjacent to one end of said support sleeve.
Claim 10
Dependent Claim
44 words
The apparatus of claim 7, characterized in that at least one of said clamping collets is displaceable along said main axis between an advanced position in which the collet is open, and a retracted position 10' in which the collet is closed and lockable.
Claim 11
Dependent Claim
52 words
The apparatus of claim 7 or 8, characterized in that each clamping collet is provided with suspension means which is rotatable together with the collet, said suspension means being adapted to 15 support a reel which is rotatable about an axis being at right angles to a plane including said main axis.
Claim 12
Dependent Claim
73 words
A tubular product, in particular for use as a catheter or as a stock product for preparing catheters, and comprising a length of a continuous tubular 20 inner plastic layer, a continuous outer plastic cover layer thereon, and a wire sheathing embedded between said inner and outer plastic layers, characterized by said wire sheathing being locally interrupted or removed to provide at least one defined 25 circumferential area having no wire sheathing therein.
Claim 13
Dependent Claim
73 words
A tubular product, in particular for use as a catheter or as a stock product for preparing catheters, and comprising a length of a continuous tubular 20 inner plastic layer, a continuous outer plastic cover layer thereon, and a wire sheathing embedded between said inner and outer plastic layers, characterized by said wire sheathing being locally interrupted or removed to provide at least one defined 25 circumferential area having no wire sheathing therein.
Claim 14
Dependent Claim
45 words
The product of claim 10, characterized in that said circumferential area without wire sheathing therein is atone end portion of said product, the wire 30 sheathing extending continuously through the remaining portion of the product, thereby defining a body portion-being integral with said end portion.
Claim 15
Dependent Claim
70 words
The product of claim 10, characterized by including a plurality of circumferential areas without 35 wire sheathing therein, said areas being spaced by intermediate areas in which said wire sheathing extends continuously between said inner and outer plastic layers. Printed for Her Majesty's Stationery Office by Croydon Printing Company Limited, Croydon Surrey, 1980. Published by the Patent Office, 25 Southampton Buildings, London, WC2A1 AY, from which copies may be obtained.
References Cited (Backward Citations)
No citation records indexed.
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