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WO1999064080A1 - Fils et pansements contenant ces fils - Google Patents

Fils et pansements contenant ces fils Download PDF

Info

Publication number
WO1999064080A1
WO1999064080A1 PCT/GB1999/001796 GB9901796W WO9964080A1 WO 1999064080 A1 WO1999064080 A1 WO 1999064080A1 GB 9901796 W GB9901796 W GB 9901796W WO 9964080 A1 WO9964080 A1 WO 9964080A1
Authority
WO
WIPO (PCT)
Prior art keywords
yarn
fibre
gel
textile
forming
Prior art date
Application number
PCT/GB1999/001796
Other languages
English (en)
Inventor
Paul John Ferguson
Stephen John Russell
Original Assignee
Akzo Nobel Uk Limited
The University Of Leeds
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Akzo Nobel Uk Limited, The University Of Leeds filed Critical Akzo Nobel Uk Limited
Priority to AU42780/99A priority Critical patent/AU4278099A/en
Publication of WO1999064080A1 publication Critical patent/WO1999064080A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/448—Yarns or threads for use in medical applications
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/225—Mixtures of macromolecular compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/28—Polysaccharides or their derivatives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/36—Cored or coated yarns or threads

Definitions

  • This invention relates to yarns which comprise gel- forming fibre. It also relates to wound dressings which contain such yarns .
  • Wound dressings of fibres such as cotton and continuous filament viscose rayon, for example in the form of woven or knitted gauzes, have been known for many years. Such dressings chiefly absorb exudate by capillary action. However, dressings of such textile fibres tend to adhere to the healing wound surface, with consequent trauma on removal. This effect may be particularly severe with staple fibres such as cotton.
  • Gel-forming fibres such as alginate fibres and carboxymethylated cellulose fibres are known, and they have been recommended for use in wound dressings. These fibres swell in contact with wound exudate and suchlike aqueous liquors, and dressings of these fibres are accordingly of low adherency. Residual swollen fibres can be removed from wounds by washing. However, the mechanical properties of these fibres are greatly reduced by swelling, making the dressing difficult to handle and to remove in one piece .
  • WO-A-93/14724 discloses a wound dressing which comprises a core of gel- forming fibre enclosed within a textile fibre sheath.
  • the sheath may comprise a single yarn looped or wound around the core or several yarns looped, braided, twisted or wrapped around the core.
  • WO-A-95/19795 discloses a wound dressing which ' comprises in sheet form a blend of textile fibre and gel-forming fibre.
  • a wound dressing which ' comprises in sheet form a blend of textile fibre and gel-forming fibre.
  • Such a dressing is said to be non-adherent to wound tissue while being absorbent and relatively inexpensive, to be retainable upon a wound for longer periods of time than conventional cotton gauze, and to create a moist wound environment which may be beneficial to healing.
  • the dressing may be a nonwoven dressing formed of a blend of textile and gel-forming staple fibres, or it may be a woven or knitted dressing formed of yarn spun from such a blend of fibres . With such dressings, there is a risk that short textile fibres may become detached and be left behind when the dressing is removed from a wound, with the possibility of interference with the healing process and other complications.
  • the first kind is a yarn of 100% alginate fibre spun on the cotton or worsted system.
  • the second kind is a fancy yarn of the type known as a gimp yarn, and consists of an alginate sliver (85-90% by weight of the yarn) between continuous filament polyamide core and binder yarns. This gimp yarn was woven into fabrics, and the water absorbencies of these fabrics were measured.
  • a yarn which comprises a textile yarn core having gel-forming fibre helically and exteriorly disposed therearound.
  • the yarn may consist solely of the textile yarn and the gel-forming fibre.
  • the textile yarn which forms the core of the yarn of the invention may be composed of a natural textile fibre, such as cotton, or of a manmade textile fibre such as viscose rayon, lyocell, acetate, polyester, polyamide or polypropylene.
  • the textile yarn may be a spun yarn or, preferably, a continuous filament yarn.
  • gel-forming fibre suitable for use in the yarn of the invention examples include alginate fibres and carboxymethylated cellulose fibres, of known kinds.
  • the fibre disposed helically around the textile yarn core may consist solely of gel-forming fibre or of a blend of textile fibre and gel-forming fibre.
  • the former alternative is preferred, in order to minimise the risk of textile fibre being left behind upon removal of a dressing from a wound.
  • the textile yarn and/or the gel-forming fibre may, if desired, be medicated.
  • Manmade fibres which incorporate medicaments are known.
  • the gel-forming fibre may be a carboxymethylcellulose fibre having a degree of substitution of at least 0.1 carboxymethyl group per glucose unit, the fibre being derived from solvent-spun cellulose fibre and having an absorbency of at least 8 grams 0.9% saline solution measured by the free-swell method and having a tenacity of at least 10 cN/tex.
  • Such fibres are disclosed in W093/12275, to which reference may be made for further details .
  • the yarn of the invention is a spiral yarn made by doubling (folding) the textile yarn and a yarn which comprises the gel-forming fibre, the former being fed to the doubling head at slower speed than the latter.
  • the yarn which comprises the gel-forming fibre may be a continuous filament yarn or a spun yarn.
  • the speed difference of the two yarns fed to the doubling head is greater, thereby forming a gimp yarn.
  • the yarn of the invention may be a friction-spun yarn made using the method and apparatus described below under the heading "Friction Spinning Method and Apparatus", wherein a filament or spun yarn of textile fibres is introduced between deposition rollers together with gel-forming staple fibres to yield a yarn having a textile fibre core helically overwrapped with gel-forming fibre.
  • the yarn construction of the invention in which the gel-forming fibre is exposed at the outside of the yarn, has the advantage that the possibility of contact between the textile fibre and a wound, with the accompanying risk of adherence, is minimised. Furthermore, gel-forming fibres are relatively expensive in comparison with textile fibres, and they are used most efficiently when exposed at the yarn and dressing surface.
  • the textile yarn core confers mechanical integrity on the yarn of the invention even after exposure to liquors such as wound exudate .
  • the invention further provides a wound dressing which contains or consists of yarn of the invention.
  • a wound dressing which contains or consists of yarn of the invention.
  • Such a dressing may take the form of a fabric, of woven or knitted construction. It may consist solely of the yarn of the invention, or it may contain for example a proportion of continuous filament viscose rayon yarn.
  • Such a fabric may be used alone (as a single or multiple ply) , or as a wound contact layer in a composite dressing.
  • the wound dressings of the invention exhibit low adherent properties .
  • Friction Spinning Method and Apparatus Friction-spun yarns may be made by the friction spinning method and apparatus described in unpublished British Patent Application 9806622.8 entitled “Friction Spinning Machine” filed on 30th March 1998 in the name of The University of Leeds. No claim is made herein to any method or apparatus as described below or as illustrated in Figure 1 (a) or (b) of the accompanying drawing, which description and illustration are derived from British Patent Application 9806622.8 by permission of The University of Leeds.
  • the invention of GB 9806622.8 concerns a novel friction spinning machine suited to the production of single component and bi-component yarn structures from all fibre types, including technical fibres in particular, alginate and other superabsorbent fibres designed for application in medical woven and knitted wound dressing structures .
  • the novel feature of the spinning approach concerns the manner in which fibres are deposited from an air-stream and assembled into the form of a yarn.
  • the fibre landing zone in Fig 1 (b) is located behind the central axis of the deposition rollers and in front of the roller nip between the perforated roller 12 and a non-perforated roller 14, whose position is shown by dotted lines - offset in Fig 1 (b) as shown in the drawing.
  • a ribbon of fibres 15 is formed behind the nip in Fig 1 (b) and held on the surface of the perforated deposition roller 12 by means of suction. Rotation of the deposition rollers 12, 14 of Fig 1 (b) causes the continuously forming ribbon 15 to pass between the nip of the two deposition rollers 12, 14.
  • a pair of twisting rollers 17 is mounted perpendicular to the roller nip, and a yarn is formed as the twist runs up into the roller nip to roll the emerging fibre ribbon 15 into a yarn 16.
  • Means (not shown) are also provided to allow the introduction of one or more filament or pre-formed yarns to allow the production of bi-component structures .

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Hematology (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Materials For Medical Uses (AREA)

Abstract

L'invention concerne un fil qui comprend une âme de fil textile autour de laquelle est enroulée en hélice une fibre gélifiante. Ces fils peuvent servir dans la fabrication de pansements à faible adhérence.
PCT/GB1999/001796 1998-06-08 1999-06-08 Fils et pansements contenant ces fils WO1999064080A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU42780/99A AU4278099A (en) 1998-06-08 1999-06-08 Yarns and wound dressings containing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9812329.2A GB9812329D0 (en) 1998-06-08 1998-06-08 Yarns and wound dressings containing the same
GB9812329.2 1998-06-08

Publications (1)

Publication Number Publication Date
WO1999064080A1 true WO1999064080A1 (fr) 1999-12-16

Family

ID=10833407

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/001796 WO1999064080A1 (fr) 1998-06-08 1999-06-08 Fils et pansements contenant ces fils

Country Status (3)

Country Link
AU (1) AU4278099A (fr)
GB (1) GB9812329D0 (fr)
WO (1) WO1999064080A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001023653A1 (fr) * 1999-09-27 2001-04-05 Bhk Holding Ltd. Tissu absorbant
WO2003022434A3 (fr) * 2001-09-10 2003-12-04 Porex Corp Matieres fibreuses auto-obturantes
WO2007003900A3 (fr) * 2005-07-01 2007-07-12 Bristol Myers Squibb Co Vetement formant pansement cellulosique carboxymethyle
WO2010031862A2 (fr) * 2008-09-22 2010-03-25 Lenzing Aktiengesellschaft Utilisation de fibres lyocell et articles contenant des fibres lyocell
GB2496310A (en) * 2011-11-01 2013-05-08 Brightwake Ltd Yarn and textile material for wound dressings
WO2013079947A1 (fr) * 2011-12-01 2013-06-06 Convatec Technologies Inc Pansement pour les plaies à utiliser dans un traitement sous vide
WO2013096091A1 (fr) * 2011-12-21 2013-06-27 Kci Licensing, Inc. Pansement pour cavité de plaie ayant un mouvement dynamique
WO2017164755A1 (fr) * 2016-03-24 2017-09-28 Naturlen Sp. Z O.O. Procédé de fabrication de matériau de pansement de plaie à l'aide de fibres de lin et matériau de pansement de plaie fabriqué à l'aide de fibres de lin
US12127913B2 (en) 2013-04-08 2024-10-29 Brightwake Limited Absorbent wound dressings

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1257717A (fr) * 1968-03-19 1971-12-22
GB1380423A (en) * 1971-04-28 1975-01-15 Courtaulds Ltd Multiply yarn
CH572113A5 (en) * 1974-03-23 1976-01-30 Toray Industries Spirally sheathed yarn of stable fibres without twist - core not fully covered, enclosed by uniformly spaced spirals(BR-23.12.75)
DE3119774A1 (de) * 1981-05-19 1982-12-23 Leuze textil GmbH + Co, 7311 Owen Core-garn
WO1993012275A1 (fr) * 1991-12-10 1993-06-24 Courtaulds Plc Fibres de cellulose
WO1993014724A1 (fr) * 1992-01-24 1993-08-05 Societe Precis Produit de pansement a ame de fibres en polymere
EP0567206A1 (fr) * 1992-04-24 1993-10-27 Albany International Corp. Formation de boucles, pour la jonction des extrémités des feutres de presse, utilisant des fils spéciaux
WO1995019795A1 (fr) * 1994-01-20 1995-07-27 Bristol-Myers Squibb Company Pansement
DE19506227A1 (de) * 1994-02-22 1996-03-07 Repp Marilyn Carla Garn, Gewebe, Gestrick, Gewirk, mit mindestens einem Cellulosetriacetatfaden mit hohen Acetylierungsgrad

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1257717A (fr) * 1968-03-19 1971-12-22
GB1380423A (en) * 1971-04-28 1975-01-15 Courtaulds Ltd Multiply yarn
CH572113A5 (en) * 1974-03-23 1976-01-30 Toray Industries Spirally sheathed yarn of stable fibres without twist - core not fully covered, enclosed by uniformly spaced spirals(BR-23.12.75)
DE3119774A1 (de) * 1981-05-19 1982-12-23 Leuze textil GmbH + Co, 7311 Owen Core-garn
WO1993012275A1 (fr) * 1991-12-10 1993-06-24 Courtaulds Plc Fibres de cellulose
WO1993014724A1 (fr) * 1992-01-24 1993-08-05 Societe Precis Produit de pansement a ame de fibres en polymere
EP0567206A1 (fr) * 1992-04-24 1993-10-27 Albany International Corp. Formation de boucles, pour la jonction des extrémités des feutres de presse, utilisant des fils spéciaux
WO1995019795A1 (fr) * 1994-01-20 1995-07-27 Bristol-Myers Squibb Company Pansement
DE19506227A1 (de) * 1994-02-22 1996-03-07 Repp Marilyn Carla Garn, Gewebe, Gestrick, Gewirk, mit mindestens einem Cellulosetriacetatfaden mit hohen Acetylierungsgrad

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001023653A1 (fr) * 1999-09-27 2001-04-05 Bhk Holding Ltd. Tissu absorbant
AU771967B2 (en) * 1999-09-27 2004-04-08 Arthrocare Corporation Absorptive fabric
WO2003022434A3 (fr) * 2001-09-10 2003-12-04 Porex Corp Matieres fibreuses auto-obturantes
WO2007003900A3 (fr) * 2005-07-01 2007-07-12 Bristol Myers Squibb Co Vetement formant pansement cellulosique carboxymethyle
WO2010031862A2 (fr) * 2008-09-22 2010-03-25 Lenzing Aktiengesellschaft Utilisation de fibres lyocell et articles contenant des fibres lyocell
WO2010031862A3 (fr) * 2008-09-22 2010-11-18 Lenzing Aktiengesellschaft Utilisation de fibres lyocell et articles contenant des fibres lyocell
CN104024498A (zh) * 2011-11-01 2014-09-03 布莱特维克公司 伤口敷料以及可用于伤口敷料中的线
WO2013064831A1 (fr) * 2011-11-01 2013-05-10 Brightwake Limited Pansements pour plaies et fil utile dans ceux-ci
US20180015197A1 (en) * 2011-11-01 2018-01-18 Brightwake Limited Wound dressings, and yarn useful therein
CN104024498B (zh) * 2011-11-01 2017-08-22 布莱特维克公司 伤口敷料以及可用于伤口敷料中的线
GB2496310B (en) * 2011-11-01 2015-10-28 Brightwake Ltd Wound dressings, and yarn useful therein
GB2504873A (en) * 2011-11-01 2014-02-12 Brightwake Ltd Three-dimensional textile material for wound dressings
GB2496310A (en) * 2011-11-01 2013-05-08 Brightwake Ltd Yarn and textile material for wound dressings
GB2504873B (en) * 2011-11-01 2015-10-14 Brightwake Ltd Wound dressings, and yarn useful therein
US20140309574A1 (en) * 2011-11-01 2014-10-16 Brightwake Limited Wound dressings, and yarn useful therein
JP2015505911A (ja) * 2011-12-01 2015-02-26 コンバテック・テクノロジーズ・インコーポレイテッドＣｏｎｖａｔｅｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｉｎｃ ゲル形成フィラメントまたは繊維を含むヤーン
CN104080962A (zh) * 2011-12-01 2014-10-01 康沃特克科技公司 包含形成凝胶的长丝或纤维的纱线
US9562305B2 (en) 2011-12-01 2017-02-07 Convatec Technologies Inc. Yarn comprising gel-forming filaments or fibres
WO2013079949A1 (fr) * 2011-12-01 2013-06-06 Convatec Technologies Inc. Fil comprenant des fibres ou des filaments de formation de gel
AU2012343583B2 (en) * 2011-12-01 2017-08-24 Convatec Technologies Inc. A yarn comprising gel-forming filaments or fibres
WO2013079947A1 (fr) * 2011-12-01 2013-06-06 Convatec Technologies Inc Pansement pour les plaies à utiliser dans un traitement sous vide
US10968543B2 (en) 2011-12-01 2021-04-06 Convatec Technologies Inc. Wound dressing for use in vacuum therapy
US9125767B2 (en) 2011-12-21 2015-09-08 Kci Licensing, Inc. Wound filler having dynamic motion
WO2013096091A1 (fr) * 2011-12-21 2013-06-27 Kci Licensing, Inc. Pansement pour cavité de plaie ayant un mouvement dynamique
US12127913B2 (en) 2013-04-08 2024-10-29 Brightwake Limited Absorbent wound dressings
WO2017164755A1 (fr) * 2016-03-24 2017-09-28 Naturlen Sp. Z O.O. Procédé de fabrication de matériau de pansement de plaie à l'aide de fibres de lin et matériau de pansement de plaie fabriqué à l'aide de fibres de lin

Also Published As

Publication number Publication date
AU4278099A (en) 1999-12-30
GB9812329D0 (en) 1998-08-05

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