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 r

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] The upper and lower layers of sol-soluble fibers are made of carboxymethyl cellulose fibers prepared from Lyocell fibers, with a degree of substitution (DS) of 0.28~0.32, a fiber fineness of 2dtex, and a length of 50mm. A modified cellulose non-woven fabric is prepared by carding and laying and needle punching, with a weight of 60gsm. Lay two layers of such non-woven fabric with ordinary cotton gauze (60gsm), with the modified cellulose non-woven fabric on the outside and the cotton gauze inside. Then the three layers of fabric are bonded together by needle punching. After being cut, packaged, and sterilized, a dressing is made. The moisture absorption of the dressing is 18g / 100cm 2 .

Example Embodiment

[0029] Example 2

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

Example Embodiment

[0031] Example 3

[0032] Both the upper and lower sol fibers use carboxymethylated chitosan prepared with chitosan as raw materials, 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 is prepared by carding, laying and needle punching, with a weight of 65gsm. Lay two layers of such non-woven fabric with nylon warp knitted fabric (60gsm), carboxymethylated chitosan non-woven fabric on the outside, nylon warp knitted fabric on the outside, and then needle punching The layers of fabric are glued together, and then cut, packaged, and sterilized to make a dressing. The moisture absorption 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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