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A kind of visible silver releasing dressing and preparation method thereof

A nano-silver and silver antibacterial technology, which is applied in the treatment of textile materials, liquid/gas/steam textile material treatment, medical science, etc., can solve the problems of easy agglomeration and uneven antibacterial distribution, and achieve high bactericidal activity, The effect of releasing uneven distribution and preventing agglomeration

Inactive Publication Date: 2018-03-23
GUANGDONG TAIBAO MEDICAL SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, a method for preparing a visible silver-releasing dressing is provided. The visible silver-releasing dressing prepared by the method has strong bactericidal activity and can effectively inhibit the growth of most bacteria. The padding treatment in the preparation process solves the problems in the prior art. Nano-silver is uneven in the non-woven fabric, prone to agglomeration, and uneven antibacterial distribution. The prepared dressing can judge the amount of silver released in the dressing by observing the color change

Method used

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  • A kind of visible silver releasing dressing and preparation method thereof
  • A kind of visible silver releasing dressing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of nano-silver solution: Take 10L of newly configured 10% citric acid solution, 10L of 6mol / kg sodium borohydride solution, and 1000L of 2mol / kg silver nitrate solution to mix at a ratio of 1:1:100. Stir for 100min, then leave standstill for 3h to obtain nano silver solution, wherein the particle size range of nano silver particles is 1~100nm; This embodiment only provides the situation that silver compound is silver nitrate, certainly, silver compound can also be silver sulfate, One or more of silver sulfadiazine and sodium zirconium phosphate;

[0031] (2) Preparation of tryptophan mixed solution: mix a tryptophan solution with a mass fraction of 10% and a HCOOH-HCL solution with a mass molar concentration ratio of 1:1 to obtain 50 L of tryptophan mixture in a volume ratio of 1:5 Solution; tryptophan solution can be one or both of L-tryptophan and D-tryptophan;

[0032] (3) Preparation of padding solution: mix the tryptophan mixed solution prepared in...

Embodiment 2

[0036] (1) Preparation of nano-silver solution: get 10L of newly configured 5% citric acid solution, 10L of 3mol / kg sodium borohydride solution, and 800L of 1mol / kg silver nitrate solution to mix 1:1:80, and mix at 50°C Stir for 70min, then leave standstill for 3h to obtain nano-silver solution, wherein the particle diameter range of nano-silver particles is 1~100nm; This embodiment only provides the situation that silver compound is silver nitrate, certainly, silver compound can also be silver sulfate, One or more of silver sulfadiazine and sodium zirconium phosphate;

[0037](2) Preparation of tryptophan mixed solution: configure a tryptophan solution with a mass fraction of 5% and a HCOOH-HCL solution with a mass molar concentration ratio of 1:1 and mix them at a volume ratio of 1:5 to obtain 50 L of tryptophan mixture Solution; tryptophan solution can be one or both of L-tryptophan and D-tryptophan;

[0038] (3) Preparation of padding solution: mix the tryptophan mixed so...

Embodiment 3

[0042] (1) Preparation of nano-silver solution: 10L of newly configured 1% citric acid solution and 10L of 1mol / kg sodium borohydride solution, 500L of 0.1mol / kg silver nitrate solution were mixed at 1:1:50, and mixed at 70°C Stir down for 40min, then leave standstill for 3h to obtain nano-silver solution, wherein the particle size range of nano-silver particles is 1~100nm; this embodiment only provides the situation that silver compound is silver nitrate, certainly, silver compound can also be silver sulfate One or more of silver sulfadiazine and sodium zirconium phosphate;

[0043] (2) Preparation of tryptophan mixed solution: mix a tryptophan solution with a mass fraction of 1% and a HCOOH-HCL solution with a mass molar concentration ratio of 1:1 to obtain 50 L of tryptophan mixture in a volume ratio of 1:5 Solution; tryptophan solution can be one or both of L-tryptophan and D-tryptophan;

[0044] (3) Preparation of padding solution: mix the tryptophan mixed solution prepa...

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Abstract

The invention belongs to the field of medical dressings, in particular to a visible silver-releasing dressing and a preparation method thereof. The dressing is composed of a nonwoven fabric and a mixed solution of nano-silver and tryptophan attached to the non-woven fabric. The antibacterial mass concentration of silver in the dressing is 5000-10000 ppm; Composed of sodium and silver compounds, the particle size range of the nano-silver is 1-100nm; the tryptophan mixed solution is composed of tryptophan solution and HCOOH-HCL solution. The visible silver-releasing dressing provided by the invention can judge the release amount of silver in the dressing by observing the color change, has strong bactericidal activity, and can effectively inhibit the growth of most bacteria.

Description

technical field [0001] The invention belongs to the field of medical dressings, in particular to a visible silver-releasing dressing and a preparation method thereof. Background technique [0002] The skin is the first immune barrier of human beings. After the skin is wounded, burned or ulcerated, the skin wounds are prone to produce exudate, pus, toxins and toxic products. The exudate contains a large number of inflammatory factors, proteases and Free radicals, etc. If these harmful substances stay on the skin surface for a long time, they will slow down the healing of the wound. Medical dressings are suitable for the period of wound granulation, which can absorb excess wound exudate, block external foreign bodies and some bacteria, protect exposed nerve endings, and relieve pain. However, ordinary dressings have disadvantages such as poor antibacterial and antibacterial properties and weak ability to promote healing. [0003] In order to improve the antibacterial, anti-i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L15/18A61L15/20A61L15/42D06B3/18
Inventor 陈锦涛韦加娜卢钊浩何立彬
Owner GUANGDONG TAIBAO MEDICAL SCI TECH
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