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Wound cover

A wound dressing and wound technology, applied in medical science, bandages, absorbent pads, etc., can solve the problems of large release of silver ions, insufficient stability of materials, and failure to maintain firmness, etc., to achieve the effect of promoting phagocytosis

Inactive Publication Date: 2013-06-05
博欧赛·格赛什·阿福特生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Of the products currently commercially available, none are satisfactory, partly because these materials are not sufficiently stable, i.e., do not retain their firmness after corresponding moisture absorption
Another reason is that the release of silver ions is too large, causing silver chloride precipitation in the tissue

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Polyethylene terephthalate and polyethylene were melted, and silver zeolite was added to the polyethylene in an amount of 2.5% by weight. The two polymers were coextruded, polyethylene terephthalate forming the core. By lowering the temperature and stretching, it is adjusted to a fineness of 2.9 dtex (decitex).

[0059] figure 1 Scanning electron micrographs of fibers are shown.

[0060] The second fiber was prepared by coextruding polyacrylonitrile and polyacrylic acid / ammonium polyacrylate copolymer.

[0061] The first and second fibers were made into 51 mm length segments, mixed in a weight ratio of 30:70, and sprayed into a rotating rubber roller at supersonic speed to form a fibrous nonwoven fabric.

[0062] Three layers (25g / m 2 、220g / m 2 and 25g / m 2 ) The above materials are stacked and combined by needling. The obtained fabric sheet is coated with a hypoallergenic acrylic adhesive and thermally bonded to polyolefin. After that, the product is cut and pa...

Embodiment 2

[0063] Example 2: Performance testing

Embodiment 2a

[0064] Example 2a: Determination of Silver Release

[0065] Analysis by ICP-OES (Inductively Coupled Plasma-Optical Emission Spectroscopy). The release rate is 60.15μg / 100cm 2 .

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Abstract

Disclosed is a wound dressing comprising an absorber layer made of a functional fleece that encompasses at least first and second filaments. The first filaments contain a polyethylene terephthalate core and a shell which is made of polyolefins and into which a silver source is integrated. The second filaments contain a polyacrylnitrile core and a polyacryl shell. The absorber layer can absorb 0.15 to 1.20 ml / cm<2> of water.

Description

technical field [0001] The present invention relates to wound dressings and their use. Background technique [0002] There are many types of wound dressings in the prior art which are mainly used to prevent the penetration of impurities into the wound and to absorb blood or wound exudates. [0003] Wound treatment can be divided into dry wound treatment and wet wound treatment. [0004] Dry wound treatment is mainly used to protect minor injuries and absorb wound secretions. [0005] Wet wound management seeks to create an improved wound healing environment by preventing wound desiccation and bacterial ingress, where gas and water vapor exchange is ensured, if possible. Such wet wound treatments are used in secondary healing wounds, chronic wounds, and occasionally in primary healing wounds. [0006] In wounds that heal by intention, the tissue loss prevents the dehiscated wound edges from being closed with sutures or clips, etc. Need to promote the proliferation of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L15/22A61L15/44A61L15/60
CPCA61L15/60A61L15/44A61L15/225
Inventor 哈拉尔德K·霍奇勒达尼埃拉·霍奇勒
Owner 博欧赛·格赛什·阿福特生物技术有限公司