Method for producing high-water absorbing medical gauze

A technology of high water absorption and gauze, which is applied in the fields of absorbent pads, medical science, textiles and paper making, etc. It can solve the problems of providing a moist environment for wounds, limited water absorption capacity of gauze, and secondary adhesion of wounds, etc., and achieves simple acquisition and superior water absorption performance , low-cost effect

Inactive Publication Date: 2017-03-08
TRUSYN CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: in view of the limited water absorption capacity of traditional gauze, which cannot provide a moist environment for the wound, which easily causes secondary adhesion of the wound and is not conducive to wound healing, the present invention first modifies the medical absorbent cotton gauze, The modified cotton gauze was obtained, and then the dried jellyfish fragments were mixed with glacial acetic acid, and treated in a water bath, separated and freeze-dried to obtain jellyfish collagen, and then mixed with glacial acetic acid and hydrogen peroxide to prepare an oxidation solution Mix to obtain water-absorbing collagen powder, and finally mix it with ethyl acetate to obtain a protein dispersion, and place the modified cotton yarn in the protein dispersion, and rotate to evaporate to obtain super-absorbent medical gauze

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] First, stir and mix 15% sodium hydroxide solution and 10% chloroacetic acid solution at a mass ratio of 3:1, and heat in a water bath at 50°C for 15 minutes to prepare a modified mixture, and then at a mass ratio of 1:25 , Dip the medical absorbent cotton gauze into the modified mixture and soak for 5 hours; after the soaking is completed, adjust the pH to neutral with glacial acetic acid, and then stand for 8 hours. After the standing is completed, filter and collect the filter cake. The filter cake was washed 5 times with water ethanol and deionized water, and dried at 70°C for 8 hours to prepare modified cotton gauze for use; then fresh jellyfish were selected, washed, shredded and dried, and the mass ratio was 1:5. Stir and mix the dried jellyfish fragments with glacial acetic acid solution, and place them in an ice-water bath at 5°C for 3 hours, then centrifuge at 10000r / min for 30min, collect the supernatant, freeze-dry it and collect the jellyfish collagen; Then, ...

example 2

[0021] First, stir and mix 15% sodium hydroxide solution and 10% chloroacetic acid solution at a mass ratio of 3:1, and heat in a water bath at 45°C for 10 minutes to prepare a modified mixture, and then at a mass ratio of 1:25 , Dip the medical absorbent cotton gauze into the modified mixture and soak for 3 hours; after the soaking is completed, adjust the pH to neutral with glacial acetic acid, and then stand for 6 hours. After the standing is completed, filter and collect the filter cake. The filter cake was washed 3 times with water ethanol and deionized water, and dried at 65°C for 6 hours to prepare modified cotton gauze for use; then fresh jellyfish was selected, washed and cut into pieces and dried, and the mass ratio was 1:5. Stir and mix the dried jellyfish fragments with the glacial acetic acid solution, and place them in an ice-water bath at 0°C for 2h, then centrifuge at 8000r / min for 25min, collect the supernatant, freeze-dry it and collect the jellyfish collagen; ...

example 3

[0024] First, stir and mix 15% sodium hydroxide solution and 10% chloroacetic acid solution at a mass ratio of 3:1, and heat in a water bath at 47°C for 12 minutes to prepare a modified mixture. Then, the mass ratio is 1:25 , Dip the medical absorbent cotton gauze into the modified mixture and soak for 4 hours; after the soaking is completed, adjust the pH to neutral with glacial acetic acid, and then stand for 7 hours. After the standing is completed, filter and collect the filter cake. The filter cake was washed 4 times with water ethanol and deionized water, and dried at 67°C for 7 hours to prepare modified cotton gauze for use; then fresh jellyfish were selected, washed and cut into pieces and dried, and the mass ratio was 1:5. Stir and mix the dried jellyfish fragments with glacial acetic acid solution, and place them in an ice-water bath at 4°C for 2h, then centrifuge at 9000r / min for 2min, collect the supernatant, freeze-dry it and collect the jellyfish collagen; Then, a...

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Abstract

The invention relates to a method for producing a high-water absorbing medical gauze, which belongs to the technical field of preparation of medical article. According to the invention, medical absorbent cotton gauze is modified to obtain the modified cotton gauze, the dried jellyfish fragments and acetate acid gracial are mixed, and a mixture is processed under water-bath condition, the mixture is separated, and is subjected to freeze drying to obtain jellyfish collagen, then the jellyfish collagen is mixed with an oxidation solution prepared by mixing acetate acid gracial and hydrogen peroxide to obtain the water absorbing collagen powder, the water absorbing protein powder and ethyl acetate are mixed to obtain protein dispersion liquid, finally, the modified cotton gauze is placed in the protein dispersion liquid, and the product is obtained through rotary evaporation. The high-water absorbing medical gauze has excellent water absorbing performance, the water absorption can reach more than 395%, the high-water absorbing medical gauze provides wet environment for wound and cannot generate secondary adhesion on the wound; the mechanical properties are excellent, the breaking strength reaches more than 190.2N, the breaking elongation can reach more than 35.6%, and the high-water absorbing medical gauze has good application prospect in the field of medical dressing.

Description

Technical field [0001] The invention relates to a method for preparing high-absorbent medical gauze, and belongs to the technical field of medical product preparation. Background technique [0002] Gauze is a traditional medical dressing with a long history of application. As a medical textile often used in medical procedures, it can wrap and protect wounds and promote their healing. Gauze is soft in texture, low in price, and has a wide range of sources. The process is relatively simple and reusable. It is still widely used in various types of wound treatments. The moisture absorption of gauze is due to the capillary space formed in the fabric structure. According to the theory of moist healing, in a moist environment, cells divide faster, which is conducive to the development of enzyme activity and wound healing. [0003] However, after contact with water, the fibers in ordinary gauze only slightly swell, and the absorption capacity is limited. Most of the absorbed water is suck...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/15D06M11/38D06M13/21C08H1/00A61L15/42A61L15/32D06M101/06
CPCD06M15/15A61L15/325A61L15/42C08H1/00D06M11/38D06M13/21D06M2101/06C08L89/00
Inventor 吴蓉蓉薛荣飞蒋玉芳
Owner TRUSYN CHEM TECH
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