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Nano silver calcium alginate antibacterial dressing

A technology of calcium alginate and calcium alginate fiber, which is applied in medical science, bandages, absorbent pads, etc., and can solve the problems that calcium alginate dressings have no antibacterial ability and affect the use effect

Inactive Publication Date: 2007-03-28
上海川本卫生材料销售有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, calcium alginate dressing has no antibacterial ability, which affects its use effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: 10 kg of sodium alginate is made into 200 kg of spinning solution, filtered and sprayed into 1% calcium chloride solution, solidified into calcium alginate fibers, stretched after being heated in a water bath at 75°C, and deionized Wash with water and acetone, and dry to obtain 10 kg of long fibers. Cut long fibers into short fibers for non-woven fabric production. Spray nano-silver paste on the cotton net of the net-laying machine with a pneumatic sprayer. The silver content of the nano-silver paste is 1%. gram, and then through needle punching and hot press drying to make calcium alginate non-woven fabric with nano-silver. The non-woven fabric is cut into dressing sheets, which are then packaged and sterilized to become finished products. The obtained calcium alginate dressing sheets contain 0.05% silver.

Embodiment 2

[0014] Example 2: 5 kg of sodium alginate is made into 100 kg of spinning solution, filtered and sprayed into 1% calcium chloride solution, solidified into calcium alginate fibers, stretched after heating in a water bath at 75°C, and deionized Wash with water and ethanol, and dry to obtain 5 kg of long fibers. Long fibers are cut into short fibers for non-woven fabric production. Spray nano-silver paste on the cotton net of the carding machine with a pneumatic sprayer. The silver content of the nano-silver paste is 2%. The diameter of the sprayed particles is about 0.5-0.8 microns. Spray 50 grams of the solution per kilogram of fiber. , and then through needle punching and hot press drying to make calcium alginate non-woven fabric with nano-silver. The non-woven fabric is cut into dressing sheets, which are then packaged and sterilized to become finished products. The silver content of the obtained calcium alginate dressing sheet is 0.1%.

Embodiment 3

[0015] Example 3: 5 kg of sodium alginate is made into 100 kg of spinning solution, filtered and sprayed into 1% calcium chloride solution, solidified into calcium alginate fibers, stretched after heating in a water bath at 75°C, and deionized Wash with water and acetone, and dry to obtain 5 kg of long fibers. The long fibers are cut into short fibers for the production of medical seaweed filler strips. Spray nano-silver paste with a pneumatic sprayer on the cotton net formed by carding machine. The silver content of nano-silver paste is 0.2%. gram, and then dried by a hot press setting machine to make medical seaweed filling strips with nano silver. The medical seaweed filling strips are cut into specifications that meet the requirements, and then packaged and sterilized to become finished products. The silver content of the obtained calcium alginate dressing was 0.01%.

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Abstract

The present invention relates to a nano silver calcium alginate antibacterial dressing. It is a product made up by using calcium alignate fibre on which the nano silve granules are adsorbed, the nano silver content is 0.01-1% of total weight of said dressing. Besides, said invention also provides its preparation method and concrete steps.

Description

technical field [0001] The invention relates to a medical dressing for wound treatment, a nano-silver calcium alginate antibacterial dressing. Background technique [0002] In the process of wound treatment, cotton gauze soaked in medicinal liquid is often used, applied on the wound or embedded in the wound, to stop bleeding, relieve pain, reduce inflammation, maintain a moist environment of the wound, and promote wound healing. Traditional cotton gauze absorbs less liquid, usually only 4 to 5 times its own weight. [0003] The medical dressing made of calcium alginate fiber can perform ion exchange with the sodium ions in the wound exudate and blood, releasing calcium ions, which can accelerate the formation of blood clots in the capillary ends, and the hemostatic effect is particularly good; As the amount of absorbed sodium ions increases, calcium alginate gradually converts into water-soluble sodium alginate, forming a thin gel layer on the wound surface, thereby prevent...

Claims

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Application Information

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IPC IPC(8): A61L15/28A61L15/46
Inventor 张帆
Owner 上海川本卫生材料销售有限公司
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