RU126007U1 - ANTI-MICROBIAL NONWOVEN MATERIAL FOR MEDICAL AND SANITARY-HYGIENIC PRODUCTS OF SHORT-TERM USE - Google Patents

Abstract

1. Antimicrobial non-woven material for medical and sanitary products for short-term use, including a mixture of fibers containing natural, artificial and synthetic fibers, mechanically bonded to each other, in which the mixture contains modified linen fibers as natural fibers, and polyester as synthetic fibers fibers and has a certain surface density, characterized in that the fibrous mixture contains 40 wt.% bamboo fibers as artificial fibers kon, the content of polyester fibers is 20 wt.%, the mixture of fibers is bonded by needle-punched method, the surface density of the material is in the range from 150 to 300 g / mi all fibers in the mixture contain 2 wt.% bactericidal additives DESANT. 2. The antimicrobial non-woven material for medical and sanitary products for short-term use according to claim 1, characterized in that it further comprises a 2nd layer of polypropylene fibers.

Description

The utility model relates to non-woven materials used for the manufacture of sanitary-hygienic and medical products for short-term use: dressings; textile carrier of drugs, ointments; absorbent wipes and tampons during surgical operations; absorbent pads for plasters; absorbent sal4> nursing nets and bedding. The material has a high absorbency and retention capacity in relation to wound exudate.

Known non-woven material for medical products for short-term use, including a mixture of fibers containing natural, artificial and synthetic fibers, bonded together by a mechanical method (waterjet), in which as a natural fiber mixture contains from 5 to 50 wt.% Flax fibers, as artificial - from 5 to 95 wt.% viscose fibers, as synthetic from 0 to 10 wt.% polyester fibers. The surface density of the material is in the range from 45 to 100 g / m ² . This material is described in RF patent No. 2191856 by class. IPC ⁷ D04H 1/44, published ^on 10.27.2002. Having sufficient hydrophilic properties for the scope of the above invention, the material does not have antimicrobial properties.

The objective of the utility model is to create a non-woven material with higher absorbent and retention abilities in combination with bactericidal and antimicrobial properties. Additionally, another objective of the utility model is to ensure minimal adhesion of the material to the wound surface (atraumatic), which allows you to safely remove the dressing from the surface of the wound.

This problem is solved due to the fact that the antimicrobial non-woven material for sanitary-hygienic and medical products for short-term use includes a mixture of fibers containing natural, artificial and synthetic fibers, bonded together by needle-punched method. As natural fibers, the mixture contains 40% by weight modified flax fibers), 40% by weight of bamboo fibers as artificial fibers, 20% by weight polyester fibers as synthetic, and all fibers in the mixture contain 2% bactericidal additives DESANT. The material has a surface density of 150-300 g / m ² . The nonwoven material may further comprise a 2nd layer of polypropylene fibers. A layer of these fibers provides the non-adherence (non-invasiveness) of the product when applied to the wound side containing this layer.

The needle-punched method in comparison with the hydro-jet method allows the creation of non-woven materials with a more voluminous structure, which provides higher absorbent and retention ability.

The proposed material is made as follows: a fibrous canvas formed in a known manner, consisting of a mixture of fibers treated with the bactericidal additive DEZANT, is fastened with a needle-punched method on the AIN-1800 unit (see MD Perepelkina et al. “Mechanical technology for the production of nonwoven materials”, p. .417).

Treatment of fibers with bactericidal additive DEZANT gives bactericidal and antimicrobial properties to non-woven material. The DEZANT bactericidal additive is produced by NEO ECOLOG LLC in accordance with the "Safety Certificate for the DEZANT bactericidal additive".

A layer of polypropylene fibers is bonded to an absorbent layer by additional machining and provides non-sticking material when applied to a wound.

Example 1

The fibrous mixture of 40 wt.% Flax modified fiber, 40 wt.% Bamboo fiber, 20 wt.% Polyester fiber treated with the bactericidal additive DESANT in an amount of 2 wt.% By weight of the fibrous mixture was bonded by the above method. Received material with a surface density of 158 g / m ² . Absorption and retention capacity was 20.5 g / g. The material has antimicrobial activity against gram-positive (St. epidermidis) and gram-negative microflora (Ps. Aeruginosa), has bacteriostatic activity against yeast-like fungi Candida albicans (Table 1).

The material is intended for the manufacture of medical and sanitary products for short-term use: a textile carrier of drugs, ointments; tampons during surgical operations; absorbent wipes for caring for the human body (medical, protective, wiping).

Example 2

The fibrous mixture of 40 wt.% Flax modified fiber, 40 wt.% Bamboo fiber, 20 wt.% Polyester fiber treated with bactericidal additive DESANT in an amount of 2 wt.% To the weight of the fibrous mixture was bonded by the above method. A second layer of polypropylene fibers was additionally applied to the material in order to ensure non-woven material atraumatic. Received material with a surface density of 279 g / m ² . The absorption capacity is 16.2 g / g, the degree of adhesion from the model of the wound surface (atraumatic) is 24%. The material has antimicrobial activity against gram-positive (St. epidermidis) microflora and bacteriostatic effect against gram-negative microflora (Ps. Aerugmosa) and yeast-like fungi Candida albicans (Table 1).

The material is intended for the manufacture of dressings: wound dressings (anti-burn, medical), absorbent pads for plasters. The material has a high absorbency and retention capacity of wound discharge.

In the manufacture of nonwoven materials using a needle-punched method of lower surface density, it is not possible to form a structure with the required properties (absorption and retention capacity of not more than 13 g / g), and with higher surface density, the material is densified, which also leads to a decrease in absorption and retention capabilities.

The absorption capacity of nonwoven materials was determined in accordance with the Methodology for unilateral contact of the material with water and biological fluids (nitrate blood and plasma) that simulate the contact of a medical dressing with a wound. The technique was developed at the Institute of Surgery. A.V. Vishnevsky.

The antimicrobial activity was checked according to the Guidelines for laboratory assessment of the antimicrobial activity of textile materials containing antimicrobial preparations of the USSR Ministry of Health (Moscow 1984). The results are presented in the form of table 1.

Table 1 Antimicrobial activity (microflora growth retardation zone) Test result Microflora growth retardation zone, mm By Staphylococcus epid. By Pseudomonas aeruginosa By Candida albicans one 2 3 four 5 6 7 Sample according to example 1 6 8 one 2 0 0 (no microflora growth under the sample) (no microflora growth under the sample) Sample according to example 2 6 5 0 0 0 0 (no microflora growth under the sample) (no microflora growth under the sample) (no microflora growth under the sample) (no microflora growth under the sample)

Claims (2)

1. Antimicrobial non-woven material for medical and sanitary products for short-term use, including a mixture of fibers containing natural, artificial and synthetic fibers, mechanically bonded to each other, in which the mixture contains modified linen fibers as natural fibers, and polyester as synthetic fibers fibers and has a certain surface density, characterized in that the fibrous mixture contains 40 wt.% bamboo fibers as artificial fibers kon, the content of polyester fibers is 20 wt.%, the mixture of fibers is bonded by needle-punched method, the surface density of the material is in the range from 150 to 300 g / m ² and all fibers in the mixture contain 2 wt.% bactericidal additives DESANT. 2. Antimicrobial non-woven material for medical and sanitary products for short-term use according to claim 1, characterized in that it further comprises a 2nd layer of polypropylene fibers.