WO1995001808A1 - Folie aus chitosan zur wundversiegelung und verfahren zu ihrer herstellung - Google Patents
Folie aus chitosan zur wundversiegelung und verfahren zu ihrer herstellung Download PDFInfo
- Publication number
- WO1995001808A1 WO1995001808A1 PCT/EP1994/002104 EP9402104W WO9501808A1 WO 1995001808 A1 WO1995001808 A1 WO 1995001808A1 EP 9402104 W EP9402104 W EP 9402104W WO 9501808 A1 WO9501808 A1 WO 9501808A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- chitosan
- wound
- casting solution
- active ingredient
- Prior art date
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
- A61L15/44—Medicaments
-
- 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
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/20—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials
- A61L2300/30—Compounds of undetermined constitution extracted from natural sources, e.g. Aloe Vera
-
- 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
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
- A61L2300/412—Tissue-regenerating or healing or proliferative agents
Definitions
- the invention relates to a film made of chitosan for covering wounds.
- Chitosan is a deacetylation product of chitin, which is obtained on an industrial scale from the shells of crabs, crabs and other shellfish.
- Chitosan is soluble in dilute solutions of organic acids, for example in three to five percent acetic acid, and can be processed from the solution into known films, plates, gels, sprays or powders by known precipitation processes (Manufacturing Chemist 10 (1984) , Pages 47 to 52).
- chitosan in medical technology, there are various possible uses for chitosan as a biocompatible substance. It is known from High-Tech 7 (1988), pages 29 to 37, to use films made from chitosan for wound sealing in the event of burns.
- the film On a defective human body surface, the film behaves like a heterologous skin substitute, which not only shields the wound from external mechanical disturbing factors, but also creates a favorable physiological healing environment for the wound. As a rule, the film is left as a wound covering until a spontaneous rejection of the film occurs towards the end of the wound healing phase. She took part in the shrinking or shrinking process of the wound and turned into a kind of scab, under which regeneration of the injured skin occurred.
- the chitosan film has a certain air permeability.
- the permeability of the chitosan film for oxygen is strongly dependent on the relative humidity of the environment. With decreasing relative humidity, the oxygen permeability drops drastically. Sufficient breathing of the wound is not ensured, in particular in the case of large-area wound seals.
- the gas exchange through a wound dressing is important, however, because a high CO 2 pressure lowers the pH and slows down the healing process and, in addition, a low oxygen content enables the multiplication of anaerobic bacteria.
- the use of the known chitosan film in large-area wounds is restricted in that the dry film is relatively brittle. Large-area wound seals on strongly curved parts of the body, for example on the elbows, chin, heel, knees or shoulders, are due to the brittleness of the known chitosan film not possible or only to a limited extent.
- the invention has for its object to provide a chitosan film for wound sealing, which can be used over a large area even in hard-to-cover parts of the body.
- the invention teaches that the film contains glycerol as a smoothing additive and has a perforated surface which promotes gas exchange.
- the film is equipped with breathing openings which are distributed evenly over the surface in large numbers per unit area. The diameter of the breathing openings should not exceed 100 ⁇ m.
- the perforations must be so small that the wound secretion cannot be pressed through them onto the surface of the film. The surface must remain dry and must not be changed like a gel.
- the addition of glycerin increases the suppleness of the film.
- the film is loaded with an active ingredient for promoting wound treatment, which is released when chitosan is broken down enzymatically.
- an active ingredient for promoting wound treatment which is released when chitosan is broken down enzymatically.
- Australian tea tree oil has proven to be particularly effective.
- Australian tea tree oil is obtained by gentle steam distillation from the leaves of the tea tree (Melaleuca alterifolia).
- the essential oil at the same time increases the bacteria and fungi-killing effect of the chitosan.
- the film is used as a further active ingredient. contains bertran to protect the skin against cornification, such an addition also being effective against psoriasis.
- the chitosan film according to the invention can be used to seal skin wounds, burns, abrasions, bruises and defects, even in large dimensions, and in particular the chronic venous leg ulcer, the wound being shielded from external mechanical disruptive factors creating its own optimal physiological healing environment can, especially with infected wounds.
- the outer surface of the chitosan film remains hard and dry after contact with the moist wound through continuous air drying, while the lower surface acquires a gel-like consistency through partial absorption of the wound secretion. This leads both to wound cleaning and to a further smooth adaptation of the film to the unevenness of a wound surface.
- the physiologically important moist environment of the wound during the exudative healing phase is not destroyed.
- the chitosan film influences hemostasis in the sense of hemostasis, which can be observed as an advantageous effect immediately after the wound has formed. Another advantage is the bactericidal and fungicidal action, which can partly be attributed to acid components which come from the casting solution used in the course of the film production.
- the chitosan film prevents excessive protein loss in large burns.
- the chitosan film Like every foreign body in the wound, the chitosan film also stimulates the granulation capacity of the connective tissue and the ca pillar sprout, which leads to an acceleration of the wound healing process.
- the film made from animal, renewable raw materials can also be used as a carrier for a local anesthetic solution in order to alleviate the initial wound pain.
- the invention further relates to a method for producing the film described.
- a casting solution is prepared from finely ground chitosan with a dilute organic acid, the casting solution is drawn out into a film and the film is dried to form the film, the casting solution being glycerol in amounts of about 10 ml of glycerol before it is further processed into film is added to 1 l of casting solution and wherein breathing openings are punched into the film, as a result of which the film receives a perforated surface which promotes gas exchange.
- the invention teaches that the casting solution is mixed with an active ingredient for promoting wound treatment, preferably with Australian tea tree oil.
- the essential tea tree oil acts as a natural disinfectant with a particularly fungicidal effect. It is surprisingly possible to break down the glycerol and tea tree oil, which is not soluble per se in dilute organic acid, in the viscous chitosan pouring solution. A stable emulsion is created.
- the only figure shows the section of a film 1 made of chitosan for covering wounds. It usually has a thickness a of 100 ⁇ m to 500 ⁇ m. A film thickness of 200 to 500 ⁇ is preferred. In the case of infected wounds, film thicknesses are in the upper range of the specified parameter range advantageous. If the wound surface is superinfected, a film more than 0.5 mm thick can also be used.
- the chitosan film contains glycerin as a smoothing additive. The addition of glycerol is in the range of 10 ml / 1 1 casting solution.
- the film 1 can contain an active ingredient for promoting wound healing, which is released when chitosan is broken down enzymatically.
- the film contains Australian tea tree oil in amounts of approximately 1 ml, based on 1 l of casting solution.
- the figure shows that the chitosan film 1 has a perforated surface 2 which promotes gas exchange.
- the perforated surface contains breathing openings 3 in large numbers per unit area. The diameter of the breathing openings is a maximum of 100 ⁇ m.
- the chitosan film shown in the figure can be used for sealing large-area wounds and has the properties already explained. It can be regarded as a heterologous skin substitute, which is also interesting from an economic point of view as the extraction of heterologous skin substitute from the mammal (e.g. pig, mouse, etc.) or through skin extraction by culturing on cell cultures.
- a heterologous skin substitute which is also interesting from an economic point of view as the extraction of heterologous skin substitute from the mammal (e.g. pig, mouse, etc.) or through skin extraction by culturing on cell cultures.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Epidemiology (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Materials For Medical Uses (AREA)
- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94923695A EP0659088A1 (de) | 1993-07-09 | 1994-06-28 | Folie aus chitosan zur wundversiegelung und verfahren zu ihrer herstellung |
US08/397,219 US5597581A (en) | 1993-07-09 | 1994-06-28 | Chitosan foil for wound sealing and process for its preparation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4322956.5 | 1993-07-09 | ||
DE4322956A DE4322956C2 (de) | 1993-07-09 | 1993-07-09 | Folie aus Chitosan zur Wundversiegelung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995001808A1 true WO1995001808A1 (de) | 1995-01-19 |
Family
ID=6492384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/002104 WO1995001808A1 (de) | 1993-07-09 | 1994-06-28 | Folie aus chitosan zur wundversiegelung und verfahren zu ihrer herstellung |
Country Status (5)
Country | Link |
---|---|
US (1) | US5597581A (de) |
EP (1) | EP0659088A1 (de) |
CA (1) | CA2143608A1 (de) |
DE (1) | DE4322956C2 (de) |
WO (1) | WO1995001808A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1563855A2 (de) | 2004-02-13 | 2005-08-17 | Cognis IP Management GmbH | Chitosanhaltige Wundauflagen |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4322956C2 (de) * | 1993-07-09 | 1995-12-21 | Haack Karl Werner An | Folie aus Chitosan zur Wundversiegelung |
ZA987019B (en) * | 1997-08-06 | 1999-06-04 | Focal Inc | Hemostatic tissue sealants |
GB9929472D0 (en) * | 1999-12-13 | 2000-02-09 | Btg Int Ltd | Polymeric film |
US7371403B2 (en) * | 2002-06-14 | 2008-05-13 | Providence Health System-Oregon | Wound dressing and method for controlling severe, life-threatening bleeding |
US20060004314A1 (en) * | 2001-06-14 | 2006-01-05 | Hemcon, Inc. | Antimicrobial barriers, systems, and methods formed from hydrophilic polymer structures such as chistosan |
ZA200309861B (en) | 2001-06-14 | 2004-12-20 | Providence Health Sys Oregon | Wound dressing and method for controlling severe, life-threatening bleeding. |
US8741335B2 (en) | 2002-06-14 | 2014-06-03 | Hemcon Medical Technologies, Inc. | Hemostatic compositions, assemblies, systems, and methods employing particulate hemostatic agents formed from hydrophilic polymer foam such as Chitosan |
WO2003037219A2 (de) * | 2001-10-30 | 2003-05-08 | Alvito Biotechnologie Gmbh | Verwendung von chitosanmaterialien |
US20050137512A1 (en) * | 2003-12-23 | 2005-06-23 | Campbell Todd D. | Wound dressing and method for controlling severe, life-threatening bleeding |
US20090130186A1 (en) * | 2002-06-14 | 2009-05-21 | Hemcon Medical Technologies, Inc. | Wound dressing assemblies, systems, and methods formed from hydrophilic polymer sponge structures such as chitosan and incorporating silver nanoparticles |
US8269058B2 (en) * | 2002-06-14 | 2012-09-18 | Hemcon Medical Technologies, Inc. | Absorbable tissue dressing assemblies, systems, and methods formed from hydrophilic polymer sponge structures such as chitosan |
AU2003263332A1 (en) * | 2002-09-11 | 2004-04-30 | Johnson And Johnson Medical Limited | Wound dressings for the treatment of wound infection |
DE602004030264D1 (de) * | 2003-09-12 | 2011-01-05 | Z Medica Corp | Teilweise hydriertes hämostatisches mittel |
DE102004047115B9 (de) * | 2004-09-27 | 2007-10-31 | Universität Hamburg | Verfahren zur Herstellung einer Wundauflage |
US20060178609A1 (en) | 2005-02-09 | 2006-08-10 | Z-Medica, Llc | Devices and methods for the delivery of molecular sieve materials for the formation of blood clots |
WO2006088912A2 (en) | 2005-02-15 | 2006-08-24 | Virginia Commonwealth University | Mineral technologies (mt) for acute hemostasis and for the treatment of acute wounds and chronic ulcers |
US9204957B2 (en) * | 2005-03-17 | 2015-12-08 | Hemcon Medical Technologies, Inc. | Systems and methods for hemorrhage control and or tissue repair |
JP4703283B2 (ja) * | 2005-06-20 | 2011-06-15 | 星製薬株式会社 | 創傷被覆材およびその製造方法 |
US8938898B2 (en) * | 2006-04-27 | 2015-01-27 | Z-Medica, Llc | Devices for the identification of medical products |
WO2007139845A2 (en) | 2006-05-23 | 2007-12-06 | Providence Health System-Oregon D/B/A Providence St. Vincent Medical Center | Systems and methods for introducing and applying a bandage structure within a body lumen or hollow body organ |
US7604819B2 (en) | 2006-05-26 | 2009-10-20 | Z-Medica Corporation | Clay-based hemostatic agents and devices for the delivery thereof |
US8202532B2 (en) | 2006-05-26 | 2012-06-19 | Z-Medica Corporation | Clay-based hemostatic agents and devices for the delivery thereof |
US7968114B2 (en) | 2006-05-26 | 2011-06-28 | Z-Medica Corporation | Clay-based hemostatic agents and devices for the delivery thereof |
CN100348272C (zh) * | 2006-06-23 | 2007-11-14 | 华南理工大学 | 可溶性纤维素止血海绵的制备方法 |
WO2008157536A2 (en) * | 2007-06-21 | 2008-12-24 | Z-Medica Corporation | Hemostatic sponge and method of making the same |
WO2009032884A1 (en) * | 2007-09-05 | 2009-03-12 | Z-Medica Corporation | Wound healing with zeolite-based hemostatic devices |
US9205170B2 (en) * | 2008-05-02 | 2015-12-08 | Hemcon Medical Technologies, Inc. | Wound dressing devices and methods |
WO2010042540A1 (en) | 2008-10-06 | 2010-04-15 | Providence Health System - Oregon | Foam medical devices and methods |
US8517979B2 (en) * | 2008-12-22 | 2013-08-27 | Abbott Laboratories | Carriers for hemostatic tract treatment |
US20110015565A1 (en) * | 2009-07-15 | 2011-01-20 | Hursey Francis X | Gas dispenser with therapeutic agent |
US8715719B2 (en) | 2010-06-16 | 2014-05-06 | Abbott Vascular, Inc. | Stable chitosan hemostatic implant and methods of manufacture |
US8858969B2 (en) | 2010-09-22 | 2014-10-14 | Z-Medica, Llc | Hemostatic compositions, devices, and methods |
CN102166370A (zh) * | 2010-11-29 | 2011-08-31 | 吴克 | 护创敷贴及其制备工艺 |
KR102189877B1 (ko) | 2012-06-22 | 2020-12-14 | 지-메디카 엘엘씨 | 지혈 장치 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2922012A1 (de) * | 1978-05-30 | 1979-12-06 | Acf Chemiefarma Nv | Pharmazeutische zubereitungen und ihre verwendung bei der wundbehandlung |
EP0138385A2 (de) * | 1983-09-21 | 1985-04-24 | The Board Of Trustees Of The University Of Illinois | Biopolymerische hydrophile Copolyelektrolyten und bioresorbierbare Wundverbände dieselben enthaltend |
US4572906A (en) * | 1983-11-21 | 1986-02-25 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government | Chitosan based wound dressing materials |
US4659700A (en) * | 1984-03-02 | 1987-04-21 | Johnson & Johnson Products, Inc. | Chitosan-glycerol-water gel |
JPH04198131A (ja) * | 1990-11-28 | 1992-07-17 | Takeda Chem Ind Ltd | 創傷治癒促進剤およびそれを含有する外用組成物 |
Family Cites Families (8)
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---|---|---|---|---|
LU83020A1 (fr) * | 1980-12-19 | 1982-07-07 | Oreal | Composition huileuse destinee au traitement des matieres keratiniques et de la peau |
US4532134A (en) * | 1981-04-06 | 1985-07-30 | Malette William Graham | Method of achieving hemostasis, inhibiting fibroplasia, and promoting tissue regeneration in a tissue wound |
GB8527686D0 (en) * | 1985-11-09 | 1985-12-11 | Shirley Inst | Wound dressing |
US4867150A (en) * | 1987-01-20 | 1989-09-19 | The B. F. Goodrich Company | Perforated elastomeric soft film and wound dressing made therewith |
US5384125A (en) * | 1987-03-31 | 1995-01-24 | Water-Jel Technologies, Inc. | Burn dressing |
JPH0433859Y2 (de) * | 1987-06-16 | 1992-08-13 | ||
JPH06104116B2 (ja) * | 1988-11-29 | 1994-12-21 | 三菱化成株式会社 | 創傷被覆材 |
DE4322956C2 (de) * | 1993-07-09 | 1995-12-21 | Haack Karl Werner An | Folie aus Chitosan zur Wundversiegelung |
-
1993
- 1993-07-09 DE DE4322956A patent/DE4322956C2/de not_active Expired - Fee Related
-
1994
- 1994-06-28 WO PCT/EP1994/002104 patent/WO1995001808A1/de not_active Application Discontinuation
- 1994-06-28 US US08/397,219 patent/US5597581A/en not_active Expired - Fee Related
- 1994-06-28 CA CA002143608A patent/CA2143608A1/en not_active Abandoned
- 1994-06-28 EP EP94923695A patent/EP0659088A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2922012A1 (de) * | 1978-05-30 | 1979-12-06 | Acf Chemiefarma Nv | Pharmazeutische zubereitungen und ihre verwendung bei der wundbehandlung |
EP0138385A2 (de) * | 1983-09-21 | 1985-04-24 | The Board Of Trustees Of The University Of Illinois | Biopolymerische hydrophile Copolyelektrolyten und bioresorbierbare Wundverbände dieselben enthaltend |
US4572906A (en) * | 1983-11-21 | 1986-02-25 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government | Chitosan based wound dressing materials |
US4659700A (en) * | 1984-03-02 | 1987-04-21 | Johnson & Johnson Products, Inc. | Chitosan-glycerol-water gel |
JPH04198131A (ja) * | 1990-11-28 | 1992-07-17 | Takeda Chem Ind Ltd | 創傷治癒促進剤およびそれを含有する外用組成物 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 016, no. 528 (C - 1001) 29 October 1992 (1992-10-29) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1563855A2 (de) | 2004-02-13 | 2005-08-17 | Cognis IP Management GmbH | Chitosanhaltige Wundauflagen |
EP1563855A3 (de) * | 2004-02-13 | 2005-12-21 | Cognis IP Management GmbH | Chitosanhaltige Wundauflagen |
Also Published As
Publication number | Publication date |
---|---|
CA2143608A1 (en) | 1995-01-19 |
DE4322956A1 (de) | 1995-01-12 |
US5597581A (en) | 1997-01-28 |
DE4322956C2 (de) | 1995-12-21 |
EP0659088A1 (de) | 1995-06-28 |
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