WO2024022671A1 - Verfahren zum schutz der haut bei ablösung von verklebten hautabdeckungen - Google Patents
Verfahren zum schutz der haut bei ablösung von verklebten hautabdeckungen Download PDFInfo
- Publication number
- WO2024022671A1 WO2024022671A1 PCT/EP2023/066019 EP2023066019W WO2024022671A1 WO 2024022671 A1 WO2024022671 A1 WO 2024022671A1 EP 2023066019 W EP2023066019 W EP 2023066019W WO 2024022671 A1 WO2024022671 A1 WO 2024022671A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- preparation
- cellulose
- skin
- weight
- glycerin
- 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
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
- A61L26/00—Chemical aspects of, or use of materials for, wound dressings or bandages in liquid, gel or powder form
- A61L26/0009—Chemical aspects of, or use of materials for, wound dressings or bandages in liquid, gel or powder form containing macromolecular materials
- A61L26/0023—Polysaccharides
-
- 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
- A61L26/00—Chemical aspects of, or use of materials for, wound dressings or bandages in liquid, gel or powder form
- A61L26/0061—Use of materials characterised by their function or physical properties
- A61L26/0071—Plasticisers
-
- 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
- A61L26/00—Chemical aspects of, or use of materials for, wound dressings or bandages in liquid, gel or powder form
- A61L26/0061—Use of materials characterised by their function or physical properties
- A61L26/0076—Sprayable compositions
Definitions
- the present invention relates to a method for protecting the skin when peeling off adhered skin coverings.
- the invention relates to a specially composed preparation which is applied to the area of skin to be covered before skin coverings are bonded, hereinafter referred to as primer.
- Skin coverings in connection with the inventive method are in particular wound coverings, plasters or self-adhesive bandages that are applied over wounds or scars/skin sutures for better healing.
- skin covering also includes self-adhesive films or fabric/non-woven sections that are applied to the uninjured skin, for example to protect against external influences.
- a good example of this class of skin coverings are tapes, kinesio tapes or scar, wart and blister plasters.
- a good skin covering is characterized by secure adhesion, which means that it does not come off on its own and shows little to no tendency to loosen or flake off in the edge areas (known as peel off).
- Film-forming, sprayable polymer solutions for producing a wound dressing are known from DE 2343923 A1.
- This is a film-forming polymer solution, particularly sprayable from aerosol containers, which, when sprayed in thin layers onto a cut, abrasion or surgical wound to be bandaged or otherwise applied after the solvent has evaporated, forms a thin, coherent film that covers the injury site.
- Liquid dressing materials or liquid plasters are marketed filled with a propellant in aerosol containers, the so-called wound dressing sprays, from which they can be sprayed onto the wound if necessary by pressing the valve button.
- Spray plaster systems such as those described in the patents DE 2343923, DE 2924042 and EP2196225 B1 are known.
- a method for protecting the skin when adhesive skin coverings are detached characterized in that in a first step the skin area to be covered is coated with a solvent-containing primer, and in a second step, After the primer solvent has dried, the skin area to be covered is covered with a self-adhesive skin cover, which leads to a significant reduction in pain.
- the film that is created after the solvent of the primer has dried helps to make the skin cover easier to remove.
- Better removability means a reduction in the removal forces, which is reflected in a reduction in pain compared to a primer-free bond.
- the primer is usually applied with a spatula or brush (consistency: preferably ointment-like, creamy) or contactless by spraying (consistency due to the solvent and/or propellant gas contained in it: thin).
- the contactless application has the advantage that no additional germs get onto the skin through the applicator, especially into the wound, and large areas of skin, especially wounds such as abrasions or burns, can be treated more quickly.
- the liquid primer After application and the solvent contained in the primer has evaporated, the liquid primer forms a flexible and breathable film.
- Primers used according to the invention are usually marketed filled with a propellant in aerosol containers, from which they can be sprayed onto the skin area to be covered if necessary by pressing the valve button.
- the main aim of the method according to the invention is that the plasters/skin coverings can be removed from the skin more easily and less painfully than when removed from unprimed skin, while the general performance of the plaster/skin covering is not negatively affected. Performance means that the plaster/skin covering does not detach from the skin prematurely.
- the primer used in the method according to the invention is preferably a preparation containing at least one natural polymer or a derivatized natural polymer, glycerin and optionally one or more vegetable oils, the preparation components being dissolved in a body-compatible solvent.
- the primer used in the process according to the invention is particularly preferably a preparation containing at least one cellulose or a cellulose derivative,
- Castor oil whereby the preparation components are dissolved in a body-compatible solvent so that the solution is low-viscosity enough to be applied, in particular to spray.
- glycerin - 0.5 to 1.5% by weight (LT) of glycerin, the preparation components being dissolved in a body-compatible solvent so that the solution is low-viscosity enough to be sprayed.
- glycerin - 0.5 to 1.5% by weight (LT) of glycerin, the preparation ingredients being dissolved in a body-compatible solvent so that the solution is low-viscosity enough to be sprayed.
- Preparation with a vegetable oil other than castor oil is particularly suitable if the vegetable oil other than castor oil is a sunflower oil.
- cellulose and/or cellulose derivative is exclusively ethyl cellulose.
- the performance of the preparation according to one of the previous versions can be further increased if the ratio of castor oil to glycerin is between 2.1 and 5; preferably from 4.3 to 4.8.
- the performance of the preparation according to one of the preceding embodiments can be further increased if the ratio of ethyl cellulose to glycerin is 3.0 to 3.5, preferably 3.3.
- the use of the primer reduces the excessive pain when removing plasters/skin coverings (and the associated risk of developing new wounds or skin lesions).
- cellulose is preferably used as the natural polymer.
- Celluloses with a molar mass of 100,000 to 500,000 g/mol are particularly advantageous.
- Celluloses with a molar mass of 150,000 to 250,000 g/mol are advantageous.
- the cellulose or the cellulose derivative surprisingly ensures that the wound secretion is absorbed and the film can therefore be hydrated (“hydration” of the wound closure film). This allows water to “diffuse” through the wound closure film.
- the hydrated film can keep the wound moist but not wet, which can support wound healing.
- glycerin is understood to mean technical glycerin for the pharmaceutical industry and cosmetic applications. It can therefore contain the usual production-related traces of water (maximum 0.5% by weight). Tests have shown that no differences in performance are achieved with the purest glycerin (analytical quality).
- the proportion of castor oil increases the hydrophobic proportion of the film formed, which leads to the adhesion of the film to the skin surface being increased.
- castor oil is understood to mean purified castor oil as approved for cosmetic and/or medical purposes (density: 0.95-0.97 g/cm 3 ; viscosity: approx. 1000 mPas).
- the preparation in addition to the castor oil content, also has a lower content of a second vegetable oil, in particular sunflower oil.
- This additional vegetable oil ensures even greater water resistance of the film formed from the preparation on the skin.
- the total oil content is advantageously not higher than 20% by weight based on the total weight of the solvent-containing and possibly propellant-gas-containing preparation.
- contents in % by weight are always based on the total mass of a preparation with/without solvents/propellants. Contents that are based on the total mass of a preparation with solvent or solvent or with solvent and propellant gas are indicated by the percentage by weight (L) or% by weight (LT).
- the primer contains at least one of the classic organic solvents, especially from the group of ethyl acetate, alcohols and/or alkanes, as these are highly volatile. These solvents generally do not pose a danger to the human body as long as they are applied topically. When choosing solvents, it is important to weigh up the benefits of a primer (film formation on the skin) and the potential harm a solvent may cause. In some cases, solvents such as ethyl alcohol or isopropyl alcohol themselves have an antiseptic effect, which can increase the benefits of the primer.
- the primer advantageously has a viscosity in the range of up to 1500mPas.
- the film can also be formed using a pump spray, which means that the use of blowing agents is no longer necessary.
- the procedure was performed on the forearm of the subjects. A film approximately 40 ⁇ m thick is applied with the primer. In general, a template (6 cm x 2 cm) was used so that all primers could be applied in the same size.
- A hydrocolloid-based plaster (Hansaplast (HP) blister plaster)
- B HP Sensitive PZN 16760138
- C HP Elastic PZN 16762456
- Comparative experiment 1 shows the performance of the three commercially available plasters (A, B & C) in terms of their adhesive strength.
- A1, B1 and C1 the forearm was previously primed according to the methods according to the invention before the patches were glued to the film formed.
- Adhesion strength was divided into five categories: no adhesion/no adhesion (20%); very insecure adhesion/rather insecure adhesion (40%); moderate
- Comparative test 1 shows that the performance of the tested plasters is not negatively influenced by the film. Specifically, it can be seen that the participants could not detect any differences in the adhesion of the plasters after 24 hours of wearing (pretreatment with the primer did not have a negative influence on the adhesive strength of the plasters).
- This comparison test shows the subjective feeling of pain (trauma) when removing the three plasters (A, B and C).
- A1, B1 and C1 the forearm was previously primed using the method according to the invention before the plasters were glued to the film formed. After wearing them for 24 hours, the plasters were removed and the pain was reduced. This means that the study participants classified the pain they experienced when removing the plaster into five different levels.
- This subjective classification (no pain/no trauma (20%); slight pain/low trauma (40%); moderate pain/moderate trauma (60%); severe pain/rather painful trauma (80%); very severe pain/ Very painful trauma (100%) was assessed individually by each study participant. The task was to assess the comparison of both samples.
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- Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Medicinal Preparation (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Buffer Packaging (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA3262957A CA3262957A1 (en) | 2022-07-26 | 2023-06-14 | Procedure for protecting the skin when removing adhesive skin coverings |
| EP23731709.4A EP4561643A1 (de) | 2022-07-26 | 2023-06-14 | Verfahren zum schutz der haut bei ablösung von verklebten hautabdeckungen |
| MX2025000852A MX2025000852A (es) | 2022-07-26 | 2025-01-21 | Procedimiento para proteger la piel al desprender cubiertas cutaneas adheridas |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022207606.0 | 2022-07-26 | ||
| DE102022207606.0A DE102022207606A1 (de) | 2022-07-26 | 2022-07-26 | Verfahren zum Schutz der Haut bei Ablösung von verklebten Hautabdeckungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024022671A1 true WO2024022671A1 (de) | 2024-02-01 |
Family
ID=86851259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/066019 Ceased WO2024022671A1 (de) | 2022-07-26 | 2023-06-14 | Verfahren zum schutz der haut bei ablösung von verklebten hautabdeckungen |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4561643A1 (de) |
| CA (1) | CA3262957A1 (de) |
| DE (1) | DE102022207606A1 (de) |
| MX (1) | MX2025000852A (de) |
| WO (1) | WO2024022671A1 (de) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2343923A1 (de) | 1973-08-31 | 1975-03-27 | Beiersdorf Ag | Filmbildende, verspruehbare polymerisatloesung zur herstellung eines wundverbandes (wundverband-spray) |
| DE2924042B1 (de) | 1979-06-15 | 1980-02-14 | Beiersdorf Ag | Filmibildende,verspruehbare Polymerisatloesung zur Herstellung eines Wundverbandes |
| US20140154188A1 (en) * | 2011-03-25 | 2014-06-05 | Laboratoires Urgo | Composition containing a cellulose, a vegetable oil and a volatile solvent, and use threof as a dressing |
| US20160199534A1 (en) * | 2007-04-24 | 2016-07-14 | Rutgers, The State University Of New Jersey | Dressing compositions and methods |
| US20170296157A1 (en) * | 2015-11-25 | 2017-10-19 | Tbm Company | Film for oral hemostasis and wound protection |
| EP2196225B1 (de) | 2008-12-09 | 2019-10-16 | Beiersdorf AG | Wasserlösliche Wirkstoffe in acrylatbasierenden Zubereitungen |
| WO2022167183A1 (de) * | 2021-02-03 | 2022-08-11 | Beiersdorf Ag | Biologisch-basierte wundverschlusszubereitung |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2016000B1 (en) | 2015-12-22 | 2017-07-03 | Youmedical B V | Composition for the treatment of keratosis. |
| DE102020211387A1 (de) | 2020-09-10 | 2022-03-10 | Beiersdorf Aktiengesellschaft | Wirkstoffhaltige Wundverschlusszubereitung |
-
2022
- 2022-07-26 DE DE102022207606.0A patent/DE102022207606A1/de not_active Withdrawn
-
2023
- 2023-06-14 WO PCT/EP2023/066019 patent/WO2024022671A1/de not_active Ceased
- 2023-06-14 CA CA3262957A patent/CA3262957A1/en active Pending
- 2023-06-14 EP EP23731709.4A patent/EP4561643A1/de active Pending
-
2025
- 2025-01-21 MX MX2025000852A patent/MX2025000852A/es unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2343923A1 (de) | 1973-08-31 | 1975-03-27 | Beiersdorf Ag | Filmbildende, verspruehbare polymerisatloesung zur herstellung eines wundverbandes (wundverband-spray) |
| DE2924042B1 (de) | 1979-06-15 | 1980-02-14 | Beiersdorf Ag | Filmibildende,verspruehbare Polymerisatloesung zur Herstellung eines Wundverbandes |
| US20160199534A1 (en) * | 2007-04-24 | 2016-07-14 | Rutgers, The State University Of New Jersey | Dressing compositions and methods |
| EP2196225B1 (de) | 2008-12-09 | 2019-10-16 | Beiersdorf AG | Wasserlösliche Wirkstoffe in acrylatbasierenden Zubereitungen |
| US20140154188A1 (en) * | 2011-03-25 | 2014-06-05 | Laboratoires Urgo | Composition containing a cellulose, a vegetable oil and a volatile solvent, and use threof as a dressing |
| US20170296157A1 (en) * | 2015-11-25 | 2017-10-19 | Tbm Company | Film for oral hemostasis and wound protection |
| WO2022167183A1 (de) * | 2021-02-03 | 2022-08-11 | Beiersdorf Ag | Biologisch-basierte wundverschlusszubereitung |
Also Published As
| Publication number | Publication date |
|---|---|
| CA3262957A1 (en) | 2025-06-09 |
| DE102022207606A1 (de) | 2024-02-01 |
| MX2025000852A (es) | 2025-06-02 |
| EP4561643A1 (de) | 2025-06-04 |
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