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Preparation method of nano-silver functional medical dressing

A nano-silver, functional technology, applied in the field of preparation of hydrocolloid medical dressings, can solve the problems of complex preparation methods and unproven safety, and achieve the effect of promoting wound healing and beneficial to growth

Inactive Publication Date: 2012-07-25
朱建华
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main materials used in these two invention patent hydrocolloid dressings are styrene, aliphatic petroleum resin, rubber, gelatin, sodium carboxymethyl cellulose, carboxymethyl chitosan, calcium alginate fiber, solid silver particles and other auxiliary materials. The method is complex and its safety needs to be demonstrated

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0013] 1) Take 30-80 parts by weight of polyisobutylene medical hot melt adhesive and heat it in a blender at 150°C to dissolve to form component A;

[0014] 2) 10 parts by weight of sodium carboxymethylcellulose, 8 parts by weight of pectin and 0.3 parts by weight of nano-silver or 0.5 parts by weight of nano-silver dispersion are mixed into solid powder at normal temperature, and the particle size of the powder is 150 mesh. The powder is component B;

[0015] 3) Slowly add component B which has been stirred into component A, carry out vacuum constant temperature stirring at a temperature of 140°C for 60 minutes, and then injection mold it on release paper or PU film;

[0016] 4) Perform aging treatment on the formed hydrocolloid, the aging treatment temperature is 35°C, and the aging treatment time is 80 hours;

[0017] 5) Then molded into shapes suitable for various wounds, and then die-cut and packaged to become products.

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Abstract

The invention relates to a preparation method of a nano-silver functional medical dressing. According to the invention, a high-molecular hydrophobic polyisobutylene adhesive, hydrophilic sodium carboxymethyl cellulose, nano-silver, and pectin are composed, such that the dressing is prepared. The dressing has dual functions such as skin bonding and wound exudate absorbing. Exudate is absorbed from the wound, such that a moist environment is formed, new tissue growth can be promoted, and wound healing can be promoted. The nano-silver medical functional hydrocolloid dressing also provides a continuous sterilization capability. The nano-silver can gradually enter the deep inside of the wound from the surface, such that sterilization can be carried out. Therefore, the sterilization concentration of the nano-silver is greatly lower than that of silver micro-particles. With the nano-silver, a defect of black-spot formation after the silver micro-particles are oxidized is overcome. The nano-silver hydrocolloid is suitable for wound nursing with severe infection and large-amount of exudate.

Description

technical field [0001] The invention relates to a preparation method of a hydrocolloid medical dressing, in particular to a preparation method of a nano-silver functional hydrocolloid medical dressing. Background technique [0002] Hydrocolloid medical dressing is a new type of dressing with the advantages of waterproof, anti-adhesion, moisturizing and heat preservation. At present, the materials and efficacy of hydrocolloid medical dressings are very different. The wounds treated by hydrocolloid dressings are also varied. For different wounds, hydrocolloid medical dressings with good safety and different functions are required. [0003] Two invention patents involving hydrocolloid dressings were retrieved from domestic patents, and their publication numbers are CN101569758A and CN101559236 respectively. The main materials used in these two invention patent hydrocolloid dressings are styrene, aliphatic petroleum resin, rubber, gelatin, sodium carboxymethyl cellulose, carbox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/44A61L15/28A61L15/24A61F13/02
Inventor 朱建华
Owner 朱建华
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