KR20180129609A - 상처 드레싱 - Google Patents

상처 드레싱 Download PDF

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Publication number
KR20180129609A
KR20180129609A KR1020177034019A KR20177034019A KR20180129609A KR 20180129609 A KR20180129609 A KR 20180129609A KR 1020177034019 A KR1020177034019 A KR 1020177034019A KR 20177034019 A KR20177034019 A KR 20177034019A KR 20180129609 A KR20180129609 A KR 20180129609A
Authority
KR
South Korea
Prior art keywords
layer
wound
wound dressing
superabsorbent
adhesive
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
KR1020177034019A
Other languages
English (en)
Korean (ko)
Inventor
앤드류 호가쓰
안데르 부게도
크레이그 하디
Original Assignee
메드트레이드 프로덕츠 리미티드
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 메드트레이드 프로덕츠 리미티드 filed Critical 메드트레이드 프로덕츠 리미티드
Priority to KR1020247000528A priority Critical patent/KR102818950B1/ko
Publication of KR20180129609A publication Critical patent/KR20180129609A/ko
Ceased legal-status Critical Current

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Classifications

    • A61F13/00029
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS 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
    • A61L15/00Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42Use of materials characterised by their function or physical properties
    • A61L15/60Liquid-swellable gel-forming materials, e.g. super-absorbents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/00042
    • A61F13/00046
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/00987Apparatus or processes for manufacturing non-adhesive dressings or bandages
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/01Non-adhesive bandages or dressings
    • A61F13/01021Non-adhesive bandages or dressings characterised by the structure of the dressing
    • A61F13/01029Non-adhesive bandages or dressings characterised by the structure of the dressing made of multiple layers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/01Non-adhesive bandages or dressings
    • A61F13/01034Non-adhesive bandages or dressings characterised by a property
    • A61F13/01042Absorbency
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/01Non-adhesive bandages or dressings
    • A61F13/01034Non-adhesive bandages or dressings characterised by a property
    • A61F13/01046Air-vapor permeability
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/02Adhesive bandages or dressings
    • A61F13/0203Adhesive bandages or dressings with fluid retention members
    • A61F13/0206Adhesive bandages or dressings with fluid retention members with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings
    • A61F13/0209Adhesive bandages or dressings with fluid retention members with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings comprising superabsorbent material
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/02Adhesive bandages or dressings
    • A61F13/0203Adhesive bandages or dressings with fluid retention members
    • A61F13/022Adhesive bandages or dressings with fluid retention members having more than one layer with different fluid retention characteristics
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/02Adhesive bandages or dressings
    • A61F13/0276Apparatus or processes for manufacturing adhesive dressings or bandages
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS 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
    • A61L15/00Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/07Stiffening bandages
    • A61L15/12Stiffening bandages containing macromolecular materials
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS 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
    • A61L15/00Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/28Polysaccharides or their derivatives
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530481Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Epidemiology (AREA)
  • Materials Engineering (AREA)
  • Hematology (AREA)
  • Dispersion Chemistry (AREA)
  • Materials For Medical Uses (AREA)
KR1020177034019A 2015-04-27 2016-04-25 상처 드레싱 Ceased KR20180129609A (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020247000528A KR102818950B1 (ko) 2015-04-27 2016-05-05 상처 드레싱

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1507132.7A GB2537840B (en) 2015-04-27 2015-04-27 Wound dressing
PCT/GB2016/051154 WO2016174399A1 (en) 2015-04-27 2016-04-25 Wound dressing

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR1020247000528A Division KR102818950B1 (ko) 2015-04-27 2016-05-05 상처 드레싱

Publications (1)

Publication Number Publication Date
KR20180129609A true KR20180129609A (ko) 2018-12-05

Family

ID=53488711

Family Applications (2)

Application Number Title Priority Date Filing Date
KR1020177034019A Ceased KR20180129609A (ko) 2015-04-27 2016-04-25 상처 드레싱
KR1020247000528A Active KR102818950B1 (ko) 2015-04-27 2016-05-05 상처 드레싱

Family Applications After (1)

Application Number Title Priority Date Filing Date
KR1020247000528A Active KR102818950B1 (ko) 2015-04-27 2016-05-05 상처 드레싱

Country Status (15)

Country Link
US (1) US12447052B2 (enExample)
EP (1) EP3288510B1 (enExample)
JP (1) JP6872528B2 (enExample)
KR (2) KR20180129609A (enExample)
CN (1) CN107995858A (enExample)
AU (1) AU2016254448B2 (enExample)
BR (1) BR112017023112B1 (enExample)
CA (1) CA2983906C (enExample)
ES (1) ES2929890T3 (enExample)
GB (1) GB2537840B (enExample)
MX (1) MX385908B (enExample)
PL (1) PL3288510T3 (enExample)
RU (1) RU2715718C2 (enExample)
SA (1) SA517390246B1 (enExample)
WO (1) WO2016174399A1 (enExample)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2537840B (en) 2015-04-27 2021-04-21 Medtrade Products Ltd Wound dressing
GB201711183D0 (en) 2017-07-12 2017-08-23 Smith & Nephew Antimicrobial or wound care materials, devices and uses
GB201711181D0 (en) 2017-07-12 2017-08-23 Smith & Nephew Polymer foam material, device and use
GB201711179D0 (en) 2017-07-12 2017-08-23 Smith & Nephew Wound care materials, devices and uses
EP3669838A1 (en) * 2018-12-21 2020-06-24 Paul Hartmann S.A. Array of absorbent dressings for the treatment of wounds
US12121418B2 (en) * 2019-09-24 2024-10-22 Solventum Intellectual Properties Company Wound dressing construct with high wicking adhesive border
EP4106698B1 (en) 2020-02-20 2024-10-30 ConvaTec Limited A wound dressing and a wound therapy apparatus
US11654057B2 (en) 2020-04-09 2023-05-23 Bio 54, Llc Devices for bleeding reduction and methods of making and using the same
MX2023007172A (es) * 2020-12-17 2023-11-15 Essity Hygiene & Health Ab Aposito para heridas.
CN112773927B (zh) * 2020-12-24 2022-09-13 江苏申思生物科技有限公司 一种高效环保的pva/pu多层泡沫敷料制作方法
EP4205711B1 (de) 2021-12-29 2024-08-28 Paul Hartmann AG Selbstklebende atmungsaktive wundauflage für stark exsudierende wunden
US11642324B1 (en) 2022-03-01 2023-05-09 Bio 54, Llc Topical tranexamic acid compositions and methods of use thereof

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5681579A (en) 1993-03-22 1997-10-28 E.R. Squibb & Sons, Inc. Polymeric support wound dressing
EP0642779A1 (en) * 1993-09-13 1995-03-15 E.R. Squibb & Sons, Inc. Wound filler
DE9402463U1 (de) * 1994-02-15 1994-04-07 R. Demhartner GmbH & Co KG, 84051 Essenbach Saugfähiger Verbundwerkstoff
GB2377177A (en) * 2001-07-05 2003-01-08 Acordis Speciality Fibres Ltd Wound dressing comprising gel forming and superabsorbent layers
CN101299978A (zh) * 2005-11-02 2008-11-05 比尔吉特·雷森格 附着于人类或动物皮肤表面的吸收用品
JP4783429B2 (ja) 2006-07-06 2011-09-28 株式会社瑞光 創傷被覆材
US20100063469A1 (en) * 2006-08-31 2010-03-11 Basf Se Polyamine-Coated Superabsorbent Polymers
CN101484639B (zh) * 2006-09-04 2011-04-13 博爱(中国)膨化芯材有限公司 一种具有液体吸收性能的无尘纸及其制造工艺
ATE494914T1 (de) * 2006-11-07 2011-01-15 Hartmann Paul Ag Mehrschichtige, absorbierende wundauflage mit einer hydrophilen wundkontaktschicht
US20100305536A1 (en) * 2007-07-06 2010-12-02 Sca Hygiene Products Ab Absorbent structure
TR201907897T4 (tr) * 2007-07-06 2019-06-21 Coloplast As Basınca duyarlı geçirgen yapıştırıcı.
DE102008031183A1 (de) * 2008-07-03 2010-01-07 Paul Hartmann Ag Wundauflage
EP2140888A1 (de) * 2008-07-04 2010-01-06 Bayer MaterialScience AG Schichtenverbund, geeignet als Wundauflage, umfassend eine Polyurethanschaumschicht, eine Absorberschicht und eine Deckschicht
BRPI0913554A2 (pt) 2008-09-18 2016-09-13 Kci Licensing curativo para aplicação de pressão reduzida em um local de tecido, sistema para aplicar uma pressão reduzida em um local de tecido, método para aplicar pressão reduzida em um local de tecido, método de fabricação de um curativo para aplicar uma pressão reduzida em um local de tecido e curativo de ferida de pressão reduzida
SE533841C2 (sv) * 2009-06-15 2011-02-01 Moelnlycke Health Care Ab Sårförband med hög vätskehanteringskapacitet
JP5614964B2 (ja) * 2009-09-30 2014-10-29 ユニ・チャーム株式会社 積層型吸収性シート
GB201006323D0 (en) * 2010-04-15 2010-06-02 Systagenix Wound Man Ip Co Bv Leakage-reducing dressing
FR2973223B1 (fr) * 2011-03-31 2013-04-19 Urgo Lab Pansement absorbant cicatrisant, ses utilisations pour les plaies chroniques
GB201207852D0 (en) * 2012-05-04 2012-06-20 Adv Med Solutions Ltd Wound dressing
DE102013002561A1 (de) * 2013-02-15 2014-08-21 Innovatec Microfibre Technology Gmbh & Co. Kg Mehrlagiges Verbundmaterial mit Superabsorber
TWI494090B (zh) * 2013-05-28 2015-08-01 Shen Cherng 抗菌、止血敷料的製造方法
KR102669639B1 (ko) * 2013-07-03 2024-05-29 디에스지 테크놀러지 홀딩스 리미티드 흡수성 복합체, 흡수성 복합체를 제조하기 위한 방법 및 이를 채용한 흡수성 물품
EP2851044A1 (en) * 2013-09-22 2015-03-25 Absorbest AB Wound dressing and method for manufacturing a wound dressing
EP2856987A1 (en) * 2013-10-07 2015-04-08 Absorbest AB A wound dressing and a method for manufacturing a wound dressing
GB201404947D0 (en) * 2014-03-19 2014-04-30 Medtrade Products Ltd Wound dressing
CN104002527B (zh) * 2014-04-30 2016-04-06 杭州可靠护理用品股份有限公司 一种含聚乳酸纤维的便携式护理垫及其制备方法
US10398604B2 (en) * 2014-12-17 2019-09-03 Kci Licensing, Inc. Dressing with offloading capability
US10376428B2 (en) * 2015-01-16 2019-08-13 The Procter & Gamble Company Absorbent pant with advantageously channeled absorbent core structure and bulge-reducing features
GB2537840B (en) 2015-04-27 2021-04-21 Medtrade Products Ltd Wound dressing

Also Published As

Publication number Publication date
BR112017023112A2 (pt) 2018-07-10
GB201507132D0 (en) 2015-06-10
RU2715718C2 (ru) 2020-03-03
US20180125721A1 (en) 2018-05-10
RU2017140986A (ru) 2019-05-27
JP2018514360A (ja) 2018-06-07
CA2983906C (en) 2023-11-14
WO2016174399A1 (en) 2016-11-03
EP3288510B1 (en) 2022-08-10
US12447052B2 (en) 2025-10-21
AU2016254448B2 (en) 2020-02-06
KR102818950B1 (ko) 2025-06-11
RU2017140986A3 (enExample) 2019-05-27
CN107995858A (zh) 2018-05-04
MX2017013730A (es) 2018-03-02
MX385908B (es) 2025-03-18
PL3288510T3 (pl) 2023-01-16
KR20240008975A (ko) 2024-01-19
GB2537840B (en) 2021-04-21
CA2983906A1 (en) 2016-11-03
AU2016254448A1 (en) 2017-11-16
BR112017023112B1 (pt) 2022-09-13
ES2929890T3 (es) 2022-12-02
GB2537840A (en) 2016-11-02
JP6872528B2 (ja) 2021-05-19
EP3288510A1 (en) 2018-03-07
SA517390246B1 (ar) 2024-02-29

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