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Preparation method for nano-silver functional hydrocolloid medical dressing

A nano-silver and hydrocolloid technology, applied in medical science, bandages, absorbent pads, etc., can solve complex safety and unreliability problems, and achieve the effects of reducing pain, promoting healing, and promoting wound healing

Inactive Publication Date: 2011-10-19
浙江医鼎医用敷料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of complex, safe and unreliable preparation methods of existing hydrocolloid dressings, and to invent a method for preparing nano-silver functional hydrocolloid medical dressings using polyisobutylene as a base material and nano-silver as an auxiliary material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] One of the implementation methods:

[0014] Step 1, take 65 kg of polyisobutylene medical hot melt adhesive and heat it in a blender at 130°C-150°C to dissolve to form component A;

[0015] Step 2: Mix 18 kg of sodium carboxymethyl cellulose, 4 kg of pectin and 150 grams of nano-silver at room temperature to form a solid powder with a particle size of 150 mesh to 300 mesh. The powder is component B ;

[0016] Step 3: Slowly add the stirred component B into component A, carry out constant vacuum stirring at a temperature of 120°C-130°C for 60-90 minutes, and then injection mold it on release paper or PU film;

[0017] Step 4: Aging treatment is performed on the formed hydrocolloid. The aging treatment temperature is 30°C-65°C, and the aging treatment time is 72 hours. Then, it is molded into a shape suitable for various wounds, and then die-cut and packaged to become a product.

[0018] Implementation method two:

[0019] Step 1, take 45 kg of polyisobutylene medical ...

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Abstract

The invention relates to a preparation method for nano-silver functional hydrocolloid medical dressing, comprising the following four steps of step 1: heating and dissolving 40 to 90 weight parts of medical polyisobutene hot-melt adhesives in a mixer under the temperature of 130 to 150 DEG C so as to form a component A; step 2: under the room temperature, mixing 10 to 35 weight parts of sodium carboxymethylcellulose, 0.5 to 8 weight parts of pectins and 0.1 to 0.3 weight parts of nano-silver or 0.5 to 1 weight parts of nano-silver dispersoid to form a solid powder body, wherein the particle size of the powder body is 150 to 300 meshes; and the powder body is a component B; step 3: slowly adding the mixed component B into the component A; carrying out vacuum constant-temperature mixing for 60 to 90 minutes under the temperature of 120 to 130 DEG C; subsequently carrying out injection molding on a piece of release paper or a PU membrane; step 4: carrying out ageing treatment on formed hydrocolloid, subsequently forming shapes suitable for various wounds by extruding; and subsequently carrying out die-cutting and packaging to form a product, wherein the ageing treatment temperature is 30 to 65 DEG C; and the ageing treatment time is 72 hours. The preparation method has the advantages of overcoming the defect that black spots can be formed easily after silver micro-particles are oxidated, and being suitable for nursing severely infected wounds.

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): A61L15/28A61L15/24A61L15/18
Inventor 贾继南周晓丹
Owner 浙江医鼎医用敷料有限公司
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