RU54774U1 - ANTI-MICROBIAL NONWOVEN MATERIAL FOR CARBON BANDS - Google Patents

Abstract

Antimicrobial non-woven material includes two, first and second layers. The first layer contains staple viscose fibers. The second layer is made of staple fusible thermoplastic synthetic fibers. Both layers are bonded to each other under the influence of gilrostruy processing. The fibers of the second layer partially pass into the first layer and are fixed in it. The outwardly facing surface is fused and made smooth under the influence of temperature and pressure. Both layers have perforation in the form of holes with a diameter of 0.1 ÷ 2.0 mm and contain 0.5 ÷ 3.0 wt.% An antimicrobial drug selected from the group: eucalymin, chlorhexidine bigluconate, amphilan, polyhexamethylene guanidine phosphate, catamine AB and 0, 25 ÷ 0.75 wt.% Sorbitan based surfactant. EFFECT: giving the material antimicrobial activity and increasing absorbency.

Description

The utility model relates to non-woven textile materials used for the manufacture of dressings in the form of dressings, napkins, tampons for the treatment of infected wounds, burns, abrasions.

A dressing is known for treating infected wounds and providing first aid.

Such a dressing is described in patent RU No. 2044549 for class. A 61 L 15/16, publ. 09/27/95, bull. Number 27. The dressing is made of a two-layer one, consisting of a sorption layer and a layer adjacent to the wound, and the sorption layer is made of antimicrobial fibers by a mechanical canvas stitching without thread.

The layer adjacent to the wound is made of medical gauze, or a knitted fabric of polyester yarns, or of a thermoplastic material of fusible synthetic fibers.

The layers of the two-layer dressing are not bonded to each other.

Known dressing has the disadvantage that through the layer adjacent to the wound, the fibers of the sorption layer migrate into the wound, which worsens the healing process.

Also known medical antimicrobial dressing described in US patent No. 2004,029,225 for class. A 61 M 35/00, publ. 04/29/2004

A multilayer dressing consisting of an outer layer of polyester fibers, a sorption layer of natural or viscose fibers and a layer adjacent to the wound of polyester fibers contains an antimicrobial preparation and a surfactant in all layers.

The bonding of the layers to each other is achieved by processing on the calender under pressure.

The bonding of the layers to each other is achieved by processing on the calender under pressure.

The disadvantage of this dressing is that the selected method of bonding does not provide sufficient air exchange of the wound with the external environment due to the dense structure of the material.

Known non-woven material for dressings, described in application No. 2003105317/15 (005875), class. A 61 L 15/42, A 61 F 13/02 of 02/26/2003

By most similar essential features and their purpose, this material is the closest analogue of the proposed utility model.

Known material for dressings includes two, the first and second, bonded to each other layer, the first of which contains staple viscose fibers, and the second layer of thermoplastic material, interconnected by hydro-blasting. The thermoplastic fibers of the second layer partially pass into the first layer and are fixed in it, and the outward facing surface of this layer is fused and made smooth under the influence of temperature and pressure.

Known material has good absorbency and atraumatic, but does not have antimicrobial properties.

The task of creating a utility model is a non-woven material for dressings with antimicrobial properties, increased absorbency and non-invasiveness.

The essence of the utility model is as follows: like the well-known, the proposed non-woven material for dressings includes two, first and second layers bonded to each other, the first of which contains staple viscose fibers, and the second layer is made of thermoplastic material, both layers bonded between by itself under the influence of hydro-jet treatment, and as a thermoplastic material of the second layer, staple fusible thermoplastic synthetic fibers are used, which partially pass into the first layer th and secured

in it, and the outwardly facing surface of the second layer is melted and made smooth under the influence of temperature and pressure.

In contrast to the known, both layers of the proposed material contain 0.5 ÷ 3.0 wt.% Antimicrobial drug selected from the group: eucalymin, chlorhexidine bigluconate, amphilan, polyhexamethylene guanidine phosphate, catamine AB and 0.25 ÷ 0.75 wt.% a surfactant based on sorbitan derivatives, and the two-layer material itself has perforation in the form of holes with a diameter of 0.1 ÷ 2.0 mm

The first layer may be made of a mixture of staple viscose fibers, modified linen fibers and polyester fibers.

The first layer can be made of a mixture of staple viscose, bleached cotton and polyester fibers.

The first layer may be made of a mixture of staple bleached viscose fibers and polyester fibers.

The essence of the utility model is illustrated by a schematic representation of the structure of the proposed non-woven material for dressings in figure 1 and the data in table 1.

Figure 1 schematically shows a cross section of the proposed material.

According to the proposed model, the nonwoven fabric shown in FIG. 1 includes a first layer 1 of fibers 2, which are staple viscose fibers or a mixture thereof with natural and polyester fibers, and a second layer 3 of staple fusible thermoplastic synthetic fibers 4.

Perforation holes 5 pass through layers 1 and 3.

Layers 1 and 3 are bonded to each other under the influence of hydro-jet treatment, as a result of which the fibers 4 of layer 3 partially pass into layer 1 and are fixed in it.

The outward facing surface 6 of the layer 3 is fused and made smooth under the influence of temperature and pressure.

Both layers contain antimicrobial preparation 7 and surfactant 8, which are evenly distributed in both layers 1 and 3.

Perforation holes 5, formed under the influence of waterjet processing, pass through layers 1, 3, 6 and are fixed as a result of exposure to temperature and pressure.

Dressings made of material according to the proposed utility model are applied with a smooth surface to the wound. Moreover, the wound exudate freely penetrates through the perforations 5 into the adsorbent layer 1. The size of the perforations in the dressing is determined by its specific purpose, as well as the state of the wound in the treatment of the patient. For the treatment of infected and purulent necrotic wounds, non-woven material for dressings with a perforation size of up to 2 mm (preferably 1-2 mm) can be used. This ensures the optimal removal rate of wound exudate (1-2 s) (see table 1). For adhesive plaster products in the treatment of small wounds and abrasions with a slight release of wound exudate, material with perforation holes up to 0.1 mm (preferably 0.1-0.5 mm) can be used, providing a wetting speed of 3-5 s and sufficient wound air exchange with the environment.

The smooth hydrophobic surface 6 of layer 3 eliminates the possibility of adhesion of the dressing to the wound, so that when the dressing is removed, the wound surface and adjacent skin are not injured.

The presence of surfactants in the material enhances the absorbency. The concentration of surfactants from 0.25 to 0.75 wt.% Provides a wettability rate of not more than 5 s, and is also due to the type of antimicrobial substance.

Due to the presence of an antimicrobial preparation in both layers of the proposed material, which gradually diffuses into the wound, wound healing is accelerated and the likelihood of its secondary intoxication is reduced.

The choice of antimicrobial preparation and its concentration is determined by the nature of the wounds and the stage of their healing. The lower limit of the content of antimicrobial substances (0.5 wt.%) Provides the required antimicrobial properties. The increase in the content of antimicrobial substances in the material over 3 mass% does not lead to a significant increase in antimicrobial properties.

According to the results of the evaluation of antimicrobial activity and wettability rate (see Table 1), it was revealed that:

- for the treatment of small wounds and cuts can be used non-woven material containing 3 wt.% eucalymin and 0.75 wt.% sorbitan bis (polyoxyethylene) monooleate;

- for the treatment of purulent necrotic wounds and burns, non-woven material containing 0.5 wt.% chlorhexidine bigluconate and 0.5 wt.% sorbitan bis (polyoxymethylene) monostearate can be used;

- for the treatment of clean postoperative wounds can be used non-woven material containing 1.0 wt.% amphilan and 0.75 wt.% sorbitan oleate (a mixture of mono- and dioleates);

- for the treatment of wounds in the epithelialization stage, a non-woven material containing 1.5 wt.% polyhexamethylene guanidine phosphate and 0.5 wt.% sorbitan monostearate can be used;

- for the treatment of infected wounds and burns can be used non-woven material containing 2.0 wt.% catamine AB and 0.25 wt.% sorbitan bis (polyoxyethylene) monostearate.

Layer 1 can be made of 100% staple viscose fibers or a mixture of these fibers with natural and polyester fibers. Modified linen or bleached cotton fibers are used as natural fibers.

The choice of the ratio of fibers in the layer 7 is determined by the specific purpose of the material. When using the latter, for example, in adhesive tape

products layer 1 is preferably made from 100% staple viscose fibers. When using non-woven material in products for dressing infected burns and wounds, layer 1 can be made from 40% by weight staple viscose fibers, 50% by weight modified linen or bleached cotton fibers and 10% by weight staple polyester fibers. When using non-woven material, for example, in dressings for clean postoperative wounds and wounds in the epithelialization stage, layer 1 can be made from 80% by weight staple bleached viscose fibers and 20% by weight staple polyester fibers.

As staple fusible fibers 4 layers 3 can be used, for example, polypropylene, copolyamide under the trade name Grilon or copolyester fibers under the trade name Grilen from EMS Chenue (Switzerland).

The material shown in figure 1, can be used for the manufacture of pads and napkins for dressing burns and wounds, adhesive plaster products, for example, plasters, adhesive film dressings.

Layers 1 and 3 are fastened together by hydro-jet treatment from the side of layer 3, for example, using a known device described in RF patent No. 2004650, according to class. D 04 H 1/54, publ. 12/15/93

The size of the perforation holes 5 in the material is ensured by the use of appropriate forming nets, on which the canvas layers are located when manufacturing the proposed material using the known device.

The outward facing surface 6 of layer 3 is melted to give it smoothness by calendering on calendars of a known type at a softening temperature of staple thermoplastic fibers of this layer.

The introduction of an antimicrobial preparation and a surfactant can be carried out by spraying or by impregnation in a plus.

The wettability rate of non-woven material for dressings was determined in accordance with GOST 9412-93 “Medical gauze. Specifications "p. 3.18" Determination of the wettability rate ".

The adherence of products to the wound surface was evaluated by the degree of adhesion of the material in comparison with gauze (gauze 100%) according to A. with. No. 1519702 by class A 61 L 15/00, G 01 N 19/04, publ. 11/07/89.

Checking the antimicrobial activity in the zone of growth inhibition of microbial flora was carried out according to the "Guidelines for the laboratory assessment of the antimicrobial activity of textile materials containing antimicrobial agents" No. 28-6 / 32 of 11/18/1983 Ministry of Health of the USSR.

The technical result obtained from the use of the utility model is shown in table 1.

Table 1. The content and type of antimicrobial preparation, mass% The content and type of surfactant, mass% Perforation size mm Fibrous composition,% Wetting speed, s The degree of adhesion,% The zone of growth inhibition of microbial flora, mm layer 1 layer 2 Stapf. au-erus. Pseudomonas 1. Eucalyminus - 3 Sorbitan bis (polyoxyethylene) monooleate - 0.75 0.1 Vis. ox. -one hundred PPvol.-100 5 twenty four one 2. Chlorhexidine bigluconate - 0.5 Sorbitan bis (polyokeimethylene) monostearate - 0.5 2.0 Cotton waste - 50
Vis ox. -40
PEFvol. -10 PP vol.-100 one fifteen 9 5 3. Amphilan - 1.0 Sorbitan oleate (a mixture of mono- and dionates) - 0.75 1,0 Depart Vis. ox -80
PEF ox. - twenty Sopolyamide in but "Grilon" 2 eighteen 5 0 4. Polyhexamethylene guanidine phosphate-1,5 Sorbitan Monostearate - 0.5 0.5 Depart Vis. ox -80
PEF ox. - twenty Copolyester B-HO "Grilen" 3 twenty four 2 5. Catamine AB-2 Sorbitan bis (polyoxyethylene) monostearate -0.25 1,5 Modified flaxseed-but - 50
Vis. ox. - 40
PEFvol. -10 PP ox. -one hundred one 25 four 3

Claims (6)

1. Antimicrobial non-woven material for dressings, including two, first and second, bonded to each other layers, the first of which contains staple viscose fibers, and the second layer is made of thermoplastic material, both layers are bonded to each other under the influence of hydro-jet treatment, and As a thermoplastic material of the second layer, staple fusible thermoplastic synthetic fibers are used, which partially pass into the first layer and are fixed in it, and the outward facing surface The layer is melted and made smooth under the influence of temperature and pressure, characterized in that both layers contain 0.5-3.0 wt.% of an antimicrobial drug selected from the group: eucalymin, chlorhexidine bigluconate, amphilan, polyhexamethylene guanidine phosphate, catamine AB and 0 , 25-0.75 wt.% Sorbitan based surfactant. 2. The antimicrobial non-woven material for dressings according to claim 1, characterized in that both layers have perforations in the form of holes with a diameter of 0.1-2.0 mm 3. The antimicrobial non-woven material for dressings according to claim 1, characterized in that the first layer is made of a mixture of staple viscose, modified linen and polyester fibers. 4. Antimicrobial non-woven material for dressings according to claim 1, characterized in that the first layer is made of a mixture of staple viscose, bleached cotton and polyester fibers. 5. Antimicrobial non-woven material for dressings according to claim 1, characterized in that the first layer is made of a mixture of staple bleached viscose and polyester fibers. 6. Antimicrobial non-woven material for dressings according to claim 1, characterized in that the second layer is made of polypropylene fibers.