WO2004060413A1 - Absorbent medical articles - Google Patents

Absorbent medical articles Download PDF

Info

Publication number
WO2004060413A1
WO2004060413A1 PCT/US2003/037388 US0337388W WO2004060413A1 WO 2004060413 A1 WO2004060413 A1 WO 2004060413A1 US 0337388 W US0337388 W US 0337388W WO 2004060413 A1 WO2004060413 A1 WO 2004060413A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
backing
medical article
absorbent layer
article according
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
PCT/US2003/037388
Other languages
English (en)
French (fr)
Inventor
Scott A. Burton
Steven C. Stickels
Matthew T. Scholz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32680727&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2004060413(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Priority to EP03789945.7A priority Critical patent/EP1572254B1/en
Priority to JP2004565086A priority patent/JP4638243B2/ja
Priority to AU2003294461A priority patent/AU2003294461A1/en
Publication of WO2004060413A1 publication Critical patent/WO2004060413A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A61L15/58—Adhesives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0203—Adhesive bandages or dressings with fluid retention members
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/023—Adhesive bandages or dressings wound covering film layers without a fluid retention layer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
    • 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

Definitions

  • solubility of the debonding agent may be characterized is by its solubility in the presence of wound exudate.
  • the debonding agent may be soluble in the presence of wound exudate, although it should be understood that the solubility of the debonding agent in the presence of wound exudate need not be complete. For example, it may be possible that the debonding agent only partially solubilizes in the presence of wound exudate such that at least a portion of the absorbent layer detaches from the backing.
  • the present invention provides a medical article including a backing substrate; a liquid permeable facing layer; an absorbent layer located between the backing substrate and the facing layer, wherein a back surface of the absorbent layer faces the front surface of the backing substrate; and backing adhesive on the front surface of the backing substrate, wherein the backing adhesive occupies an edge zone on the front surface of the backing substrate surrounding the absorbent layer, and further wherein a portion of the front surface of the backing substrate located directly opposite the absorbent layer is free of the backing adhesive.
  • Medical articles, particularly wound dressings, of the present invention may advantageously remove excess exudate from a wound; maintain a moist wound environment; allow gas exchange so that oxygen, water vapor, and carbon dioxide can pass through the medical article; are thermally insulating to maintain the wound at body temperature.
  • the medical articles may be impermeable to liquids and microorganisms to minimize contamination and infection; may be non-adherent to the wound so that no damage is done to the granulating tissue; and may minimize the need to cleanse the wound of dressing material.
  • operably attached includes methods of attachment in which the two recited components are directly attached to each other (i.e., in physical contact) as well as when the two cited components are attached to each other through one or more intermediate components (such as in the depicted embodiment in which absorbent layer 30 is operably attached to the backing layer 20 through debonding agent 40).
  • FIG. 2 is a plan view of the medical article 10 of FIG. 1 with the frame 26 removed from the backing layer 20.
  • This view in combination with FIG. 1, illustrates the relative sizes of the various components in the depicted embodiment.
  • the facing layer 50 occupies a smaller area than the backing layer 20.
  • the backing layer 20 extends past the periphery of the facing layer 50 such that the backing layer 20 forms a frame about the periphery of the facing layer 50.
  • the backing adhesive 24 be located within the area of the backing layer 20 that extends past the periphery of the facing layer 50 to, e.g., assist in retaining the medical article 10 on a patient.
  • water soluble film materials include natural polymers and modified natural polymers such as cellulose derivatives (e.g., hydroxypropyl cellulose, hydroxyethyl cellulose, carboxymethylcellulose, etc.), guar, xantham gum, gelatin, etc. These materials may be provided alone or as blends, mixtures and laminates of two or more components. Such materials may be provided as films or foam sheets.
  • natural polymers and modified natural polymers such as cellulose derivatives (e.g., hydroxypropyl cellulose, hydroxyethyl cellulose, carboxymethylcellulose, etc.), guar, xantham gum, gelatin, etc. These materials may be provided alone or as blends, mixtures and laminates of two or more components. Such materials may be provided as films or foam sheets.
  • the particulates may prevent contact between the absorbent layer and the backing layer in the interstices (if any) between particulates.
  • the backing layer and the absorbent layer may be attached (e.g., adhered) to each other in the interstices between particulates.
  • the particulates may serve as propagation points at which detachment of the absorbent layer from the backing layer begins when the absorbent layer takes up sufficient water from, e.g., wound exudate, etc.
  • the perforations, slits, etc. that provide for passage of liquids through the facing layer may additionally extend through an adhesive layer, if the front surface of the facing film (that surface facing toward the wound) is coated with a pressure sensitive adhesive layer.
  • the absorbent layers used in the present invention are inherently bacteriostatic and possesses low odor.
  • bacteriostatic or odor removing agents can be added to the absorbent layer or other components in the medical article to enhance these properties.
  • the absorbent layers of the present invention can include one or more active agents, such as pharmacologically active agents.
  • the absorbent layer may, in fact, include at least two absorbent layers: a first absorbent layer and a second absorbent layer.
  • the first absorbent layer is typically more absorbent than the second absorbent layer, and can retain a greater volume of body fluids than the second absorbent layer.
  • the second absorbent layer is positioned such that it is located between the first absorbent layer and the wound. This second absorbent layer provides integrity to the wound dressing and avoids transfer of the first absorbent layer into the wound.
  • the absorbent layers of medical articles according to the present invention may preferably include, or even consist essentially of (in some embodiments), a gel material of the present invention including a polymer, which can be a homopolymer or a copolymer, of a multifunctional poly(alkylene oxide) free-radically polymerizable macromonomer.
  • the multifunctional poly(alkylene oxide) macromonomer has a weight average molecular weight of at least about 2000.
  • the multifunctional poly(alkylene oxide) macromonomer includes a copolymeric alkylene oxide moiety of the formula (Formula I):
  • Such a syrup is preferably partially polymerized (typically, about 10-15% conversion) to form a coatable composition (typically, having a viscosity of about 300 centipoise to about 20,000 centipoise), then coated onto a backing or a release liner, for example, and then polymerized further to form a gel.
  • the syrup polymer mixture preferably includes a photoinitiator.
  • the step of forming a gel from the syrup polymer mixture preferably includes applying radiation (infrared, ultraviolet, visible, electron beam, etc., preferably, ultraviolet radiation), thermal energy, or a combination thereof (preferably sequentially).

Landscapes

  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Epidemiology (AREA)
  • Hematology (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Materials For Medical Uses (AREA)
  • Medicinal Preparation (AREA)
PCT/US2003/037388 2002-12-19 2003-11-21 Absorbent medical articles Ceased WO2004060413A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP03789945.7A EP1572254B1 (en) 2002-12-19 2003-11-21 Absorbent medical articles
JP2004565086A JP4638243B2 (ja) 2002-12-19 2003-11-21 吸収性医療物品
AU2003294461A AU2003294461A1 (en) 2002-12-19 2003-11-21 Absorbent medical articles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/324,832 2002-12-19
US10/324,832 US7612248B2 (en) 2002-12-19 2002-12-19 Absorbent medical articles

Publications (1)

Publication Number Publication Date
WO2004060413A1 true WO2004060413A1 (en) 2004-07-22

Family

ID=32680727

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/037388 Ceased WO2004060413A1 (en) 2002-12-19 2003-11-21 Absorbent medical articles

Country Status (6)

Country Link
US (2) US7612248B2 (https=)
EP (2) EP1572254B1 (https=)
JP (1) JP4638243B2 (https=)
CN (1) CN100379463C (https=)
AU (1) AU2003294461A1 (https=)
WO (1) WO2004060413A1 (https=)

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US7960602B2 (en) 2004-12-30 2011-06-14 Bayer Innovation Gmbh Compositions and processes for accelerated wound healing using novel fibrous webbings
US8389791B2 (en) 2003-05-29 2013-03-05 The Board Of Trustees Of The Leland Stanford Junior University Treatment devices and methods with extending elements
US8395011B2 (en) 2009-08-11 2013-03-12 Neodyne Biosciences, Inc. Segmented skin treatment systems and methods
WO2014147339A1 (fr) 2013-03-20 2014-09-25 Laboratoires Urgo Pansement ayant un bord peripherique adhesif avec un pourtour ondule.
US9204999B2 (en) 2008-05-30 2015-12-08 Kci Licensing, Inc. See-through reduced-pressure dressings and system
US9248048B2 (en) 2007-08-03 2016-02-02 Neodyne Biosciences, Inc. Wound or skin treatment devices and methods
US9358009B2 (en) 2007-08-03 2016-06-07 Neodyne Biosciences, Inc. Skin straining devices and methods
US10213350B2 (en) 2012-02-08 2019-02-26 Neodyne Biosciences, Inc. Radially tensioned wound or skin treatment devices and methods
US10271995B2 (en) 2012-12-18 2019-04-30 Kci Usa, Inc. Wound dressing with adhesive margin
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US10857037B2 (en) 2007-08-03 2020-12-08 Neodyne Biosciences, Inc. Controlled strain skin treatment devices and methods
US11426165B2 (en) 2008-05-30 2022-08-30 Kci Licensing, Inc. Reduced-pressure, linear wound closing bolsters and systems
US11980738B1 (en) 2019-12-10 2024-05-14 Neodyne Biosciences, Inc. Injection and infusion site treatment devices and methods
US12544541B2 (en) 2019-12-10 2026-02-10 Neodyne Biosciences, Inc. Injection and infusion site treatment devices and methods

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US7612248B2 (en) 2009-11-03
JP4638243B2 (ja) 2011-02-23
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US8410332B2 (en) 2013-04-02
CN100379463C (zh) 2008-04-09
CN1729025A (zh) 2006-02-01
EP2462956B2 (en) 2017-03-29
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EP1572254B1 (en) 2015-11-04
US20040133143A1 (en) 2004-07-08

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