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1. EP2328626 - WOUND DRESSING HAVING A POLYURETHANE FOAM LAYER AND A COVER LAYER MADE OF THERMOPLASTIC POLYMER

Office
European Patent Office
Application Number 09778394
Application Date 08.09.2009
Publication Number 2328626
Publication Date 08.06.2011
Publication Kind A2
IPC
A61L 15/62
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
15Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
42Use of materials characterised by their function or physical properties
62Hydrosoluble or hydrodegradable materials
A61F 13/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
13Bandages or dressings; Absorbent pads
A61L 15/42
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
15Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
42Use of materials characterised by their function or physical properties
C08G 18/72
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
70characterised by the isocyanates or isothiocyanates used
72Polyisocyanates or polyisothiocyanates
C08L 75/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
75Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
04Polyurethanes
CPC
A61F 13/00017
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
13Bandages or dressings
00004Non-adhesive dressings
00008characterized by the material
00017synthetic, e.g. polymer based
A61F 13/00029
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
13Bandages or dressings
00004Non-adhesive dressings
00021characterized by the structure of the dressing
00029made of multiple layers
A61F 13/025
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
13Bandages or dressings
02Adhesive plasters or dressings
0246characterised by the skin adhering layer
025having a special distribution arrangement of the adhesive
A61F 2013/0074
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
13Bandages or dressings
00361Plasters
00727means for wound humidity control
00731with absorbing pads
0074containing foams
A61F 2013/00855
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
13Bandages or dressings
00361Plasters
00855pervious to air or vapours
A61L 15/26
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
15Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
22containing macromolecular materials
26Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
Applicants BAYER MATERIALSCIENCE AG
Inventors SCHOENBERGER JAN
Designated States
Title
(DE) WUNDAUFLAGE MIT EINER POLYURETHAN-SCHAUMSCHICHT UND EINER DECKSCHICHT AUS THERMOPLASTISCHEM POLYMER
(EN) WOUND DRESSING HAVING A POLYURETHANE FOAM LAYER AND A COVER LAYER MADE OF THERMOPLASTIC POLYMER
(FR) PANSEMENT DOTÉE D'UNE COUCHE DE MOUSSE DE POLYURETHANE ET UNE COUCHE DE COUVERTURE EN POLYMÈRE THERMOPLASTIQUE
Abstract
(DE) Die vorliegende Erfindung betrifft einen Schichtenverbund, geeignet als Wundauflage, umfassend eine Schaumschicht (10) sowie eine Deckschicht (20), wobei die Deckschicht (20) thermoplastisches Polymer, vorzugsweise Polyurethan, umfasst und zumindest teilweise direkt mit der Schaumschicht (10) verbunden ist und wobei die Schaumschicht (10) einen Polyurethanschaum umfasst, der erhalten wird, indem eine Zusammensetzung umfassend eine wässrige, anionisch hydrophilierte Polyurethandispersion (I) aufgeschäumt und getrocknet wird. Der Schaum kann mit Ethylenoxid/Propylenoxid-Blockcopolymeren stabilisiert werden. Die Erfindung betrifft weiterhin ein Verfahren zur Herstellung eines solchen Schichtenverbundes sowie dessen Verwendung beispielsweise als Wundauflage.
(EN) The present invention relates to a layer composite, suited as a wound dressing, comprising a foam layer (10) and a cover layer (20), wherein the cover layer (20) comprises thermoplastic polymer, preferably polyurethane, and is at least partially directly connected to the foam layer (10), and wherein the foam layer (10) comprises a polyurethane foam which is obtained by foaming and drying a composition comprising an aqueous, anionically hydrophilized polyurethane dispersion (I). The foam can be stabilized using ethylene oxide/propylene oxide block copolymers. The invention further relates to a method for producing a layer composite of said kind and to the use thereof, for example as a wound dressing.
(FR) L'invention concerne un pansement en couches, utilisé en tant que pansement pour plaies, comprenant une couche de mousse (10) et une couche de couverture (20), la couche de couverture (20) contenant un polymère thermoplastique, de préférence du polyuréthane, et cette couche est au moins partiellement reliée directement à la couche de mousse (10). La couche de mousse (10) comprend une mousse de polyuréthane, obtenue par moussage puis séchage d'une composition comprenant une dispersion de polyuréthane (I) aqueuse et hydrophile à l'état anionique. La mousse peut être stabilisée avec des blocs d'oxyde d'éthylène/ oxyde propylène copolymères. L'invention concerne également un procédé de production dudit pansement en couches ainsi que son utilisation en tant que pansement pour plaies, par exemple.
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