Interactive medical wet dressing and its prepn and application

A wet dressing and interactive technology, applied in the field of interactive medical wet dressing and its preparation, can solve the problems of poor air permeability, moisture permeability, inconvenient transportation, storage, rejection, etc., achieve obvious drainage effect and promote healing function , good strength and elastic effect

Inactive Publication Date: 2007-08-22
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these single materials are difficult to meet the many performance requirements of medical dressings, and there are disadvantages such as unsatisfactory strength and elasticity, poor air permea

Method used

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  • Interactive medical wet dressing and its prepn and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Preparation of interactive dressing

[0030] 1 Material:

[0031] Polymer water-absorbing material: A-type superabsorbent resin from Guangzhou Jiacheng Company, with a particle size of 100 mesh, the main component is polyacrylic acid cross-linked body, the amount of absorbed distilled water is 520g / g, and the amount of absorbed treatment solution is 55g / g;

[0032] Lining material: Dust-free paper produced by Shandong Xincheng Paper Company;

[0033] Fabric: Purchased polyester fiber self-spun, knitted fabric, double thread structure, single layer weight 110g / m 2 .

[0034] 2 methods:

[0035] Take a certain area of ​​lining material, and spread a layer of super absorbent resin on it (amount of 80g / m 2 ), spread as evenly as possible, and then spray a small amount of water to make the water-absorbent resin begin to swell, spread another layer of lining on the water-absorbent resin, and perform hot-press molding (temperature 112°C) to make the water-absorben...

Embodiment 2

[0037] Example 2: Bacteria absorption effect of interactive dressing

[0038] 1 Materials and methods:

[0039] Use triple distilled water to prepare a treatment solution according to the concentration of inorganic salt metal ions, and disinfect and sterilize. Then put the dressing prepared by the above method into the sterilized treatment solution and soak for 10 minutes to make it reach swelling equilibrium. Take out the dressing, put it on the agar plate medium that has been cultured for 2 days and carry Pseudomonas aeruginosa and Staphylococcus aureus, and culture it at 37°C for 1 day at a constant temperature, take out the culture dish and count the bacteria, and use the blank sample as the control , to calculate the adsorption rate of dressings to two kinds of bacteria respectively.

[0040] 2 Results and Discussion:

[0041] The dressing has an adsorption rate of 40% to 48% for Pseudomonas aeruginosa and 45% to 56% for Staphylococcus aureus. It shows that the dressi...

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PUM

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Abstract

The present invention discloses one kind of interactive medical wet dressing and its preparation process and application. The dressing includes one water absorbing core layer and one hydrophobic face layer. The water absorbing core layer consists of fibrous lining material and high hydroscopicity material of polyacrylate, PVA, polyacrylic acid or acrylic acid-acrylamide copolymer; and the hydrophobic face layer is fabric of Dacron, capron, acrylon, etc. The dressing has moisture permeability of 30-70 g/hr.sq cm, low material consumption, low cost, small thickness and great liquid absorption. It is prepared through dispersing high hydroscopicity material grains between two layers of lining, spraying small amount of water, hot pressing at 100-140 deg.c to form the composite water absorbing layer; setting the water absorbing core between two layers of hydrophobic material, sealing at 135-170 deg.c and sterilizing. The dressing is used for wound.

Description

technical field [0001] The invention belongs to the field of polymer medical dressings, in particular to an interactive medical wet dressing and its preparation method and application. Background technique [0002] With the advancement of material science and technology, the research on medical dressings has also achieved rapid development. Traditional wound dressings are mainly gauze cotton products, although cotton dressings have strong water absorption, good heat resistance, and good alkali resistance. However, it also has disadvantages such as easy shrinkage after absorbing wound secretions, easy wound infection due to pollution, and easy adhesion with the wound surface to cause second-degree trauma. At the same time, because it is an inert dressing, it does not significantly promote the healing of the wound surface. Healing effect (Li Xiaoyang, Zhu Peifang, Hu Jianian. Development and evaluation of new burn dressings. Journal of Biomedical Engineering 1994; 11(1): 5). ...

Claims

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Application Information

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IPC IPC(8): A61F13/02A61L15/22A61L15/42
Inventor 徐雄立周美华鲁建国沈博强
Owner DONGHUA UNIV
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