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Woundplast and preparation technology thereof

A technology of hydrogel layer and non-woven fabric, which is applied in the field of medical devices to achieve the effects of speeding up repair, preventing colonization of pathogenic bacteria, good compatibility and safety

Inactive Publication Date: 2011-08-31
吴克
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to develop a non-adhesive wound, easy to tear and not easy to fall off the protective wound dressing for the defects of the traditional wound dressing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The protective bandage of the present invention is made up of non-woven fabric, hydrogel layer and plastic film, wherein, by weight percentage, hydrogel layer is made of 2% chitosan, 2% isomaltooligosaccharide, 0.5 % peppermint oil, 0.5% p-hydroxybenzoic acid, 20% glycerin, 5% polyvinylpyrrolidone, 5% polyacrylic acid and 65% purified water.

[0015] The preparation technology of protective bandage, concrete steps are:

[0016] 1) Add 5g of peppermint oil to 200g of glycerin, mix well, and set aside;

[0017] 2) Heat 650ml of purified water to 90°C and keep it warm for 30 minutes, then add 5g of p-hydroxybenzoic acid;

[0018] 3) When the temperature of the material treated in step 2) is cooled to 40°C, add 50g of polyvinylpyrrolidone and 50g of polyacrylic acid, fully stir and disperse evenly;

[0019] 4) Cool down the mixture treated in step 3), add 20g of chitosan, 20g of isomaltooligosaccharide and pre-dispersed materials, fully stir and mix evenly to obtain a hyd...

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PUM

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Abstract

The invention discloses a woundplast and a preparation technology thereof. The woundplast consists of non-woven fabric, a hydrogel layer and a plastic film. The hydrogel layer comprises the raw materials based on weight percentage: 1%-5% of chitosan, 1%-5% of low-polymerized isomaltose, 1%-3% of peppermint oil, 1%-3% of p-hydroxybenzoic acid, 10%-30% of glycerol, 3%-8% of polyvinylpyrrolidone, 3%-8% of polyacrylic acid and 55%-75% of purified water. The prepared hydrogel layer, non-woven fabric and plastic film are coated and cut on a hydrogel coating machine set and are dried for 24h till that the moisture content is within the range from 50% to 65% so as to prepare the woundplast. The woundplast has the characteristics that the wound can be promoted to be healed, and the woundplast is flexible in use.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a wound dressing and a preparation process thereof. Background technique [0002] Common wound protection products on the market today, such as bandages, are usually pasted on the wound surface with medical tape or PU film coated with medical glue. Every time the bandage is changed, it will be difficult to tear off, and it may be The healed wound is torn again, which brings pain to the patient. Contents of the invention [0003] The purpose of the present invention is to develop a non-adhesive wound, easy to tear and difficult to fall off the protective wound dressing for the defects of the traditional wound dressing. [0004] The protective bandage of the present invention is made up of non-woven fabric, hydrogel layer and plastic film, wherein, by weight percentage, hydrogel layer is made of 1%~5% chitosan, 1%~5% Isomaltooligosaccharide, 1%~3% peppermint oil, 1%~3% p-hydroxyb...

Claims

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Application Information

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IPC IPC(8): A61L15/34A61L15/28A61L15/24A61L15/20A61L15/42
Inventor 吴克
Owner 吴克
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