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High-wet-strength wound dressing

A wound dressing and strength technology, applied in dressings, viscous dressings, medical science and other directions, can solve the problems of high temperature, affecting product comfort and softness, and achieve high strength and toughness, which is beneficial to wound healing.

Inactive Publication Date: 2013-06-05
FOSHAN UNITED MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires higher temperature, but also needs to add other chemical reagents
In addition, this method will also affect the comfort and softness of the product

Method used

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  • High-wet-strength wound dressing
  • High-wet-strength wound dressing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028]Both the upper and lower layers of sol fiber use carboxymethyl cellulose fiber prepared from Lyocell fiber, the degree of substitution (DS) is 0.28~0.32, the fiber fineness is 2dtex, and the length is 50mm. The modified cellulose non-woven fabric was prepared by carding, laying and needling, with a grammage of 60 gsm. Stack two layers of such non-woven fabrics with ordinary cotton gauze (gram weight 60gsm), with the modified cellulose non-woven fabric on the outside and cotton gauze inside, and then bond the three layers of fabric together by needle punching, and then After being cut, packaged and sterilized, it is made into a dressing. The hygroscopicity of the dressing is 18g / 100cm 2 .

Embodiment 2

[0030] Both the upper and lower sol fibers use acylated chitosan prepared from chitosan, with a degree of substitution (DS) of 0.28-0.34, a fiber fineness of 2dtex, and a length of 50mm. Prepare acylated chitosan non-woven fabric by carding, laying and needle punching, with a gram weight of 70gsm. Lay two layers of such non-woven fabrics and polyester warp-knitted fabrics (gram weight 50gsm), with the modified chitosan non-woven fabric on the outside and polyester yarn warp-knitted fabrics on the inside, and then bond the three-layer fabric by needle punching. Put them together, then cut, package, and sterilize to make a dressing. The hygroscopicity of the dressing is 19g / 100cm 2 .

Embodiment 3

[0032] Both the upper and lower sol fibers use carboxymethylated chitosan prepared from chitosan, with a degree of substitution (DS) of 0.28-0.34, a fiber fineness of 2dtex, and a length of 55mm. The carboxymethylated chitosan non-woven fabric was prepared by carding, laying and needling, with a gram weight of 65 gsm. Lay two layers of such non-woven fabric and nylon warp-knitted fabric (gram weight 60gsm), carboxymethylated chitosan non-woven fabric on the outside, nylon warp-knitted fabric on the inside, and then three Layers of fabric are bonded together, and then cut, packaged, and sterilized to make a dressing. The hygroscopicity of the dressing is 21g / 100cm 2 .

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Abstract

The invention relates to a high-wet-strength wound dressing. Specifically, the wound dressing is formed by three layers of structures, outer layer material is sol fiber, middle layer material is woven fabric or knitted fabric or other nonwoven fabric, and the three layers of structures are connected together in a physical or chemical mode. The wound dressing can be used for nursing wounds of chronic ulcers such as a vein blood stasis ulcer, a stress ulcer, a diabetic foot ulcer and other chronic ulcer wounds including cave type or depressed type or the like ulcer wounds.

Description

technical field [0001] The present invention relates to a high wet strength wound dressing. The dressing includes a three-layer structure: the outer layer is hygroscopic sol fiber, and the middle layer is woven or knitted fabric or non-woven fabric made of another non-sol fiber; the three-layer structure is connected together by physical or chemical means. Background technique [0002] It is well known that high wet strength wound dressings play an important role in wound care with moderate or heavy exudate, which can not only fully absorb the exudate during wound healing, but also maintain a moist environment for the wound, which is useful. Conducive to wound healing. However, such dressings lose strength as they absorb exudate. Wound dressings with low wet strength are easily damaged during the removal process, which increases the difficulty of wound care, and even the damaged wound dressing may remain on the wound surface, causing concurrent infection of the wound and s...

Claims

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Application Information

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IPC IPC(8): A61F13/02A61L15/28A61L15/44
Inventor 王晓东陶炳志
Owner FOSHAN UNITED MEDICAL TECH
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