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Medical foam dressing and preparation method thereof

A technology of foam and polyurethane foam, which is applied in the field of medical foam dressing and its preparation, can solve the problems of poor ability to absorb wound exudate, easily cause inflammation, secondary trauma, etc., achieve low cost, promote wound healing, and simple process Effect

Inactive Publication Date: 2015-03-11
SUZHOU BEC BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional dressing is absorbent cotton gauze, which has poor ability to absorb wound exudate and is not waterproof, and it is easy to cause secondary trauma and inflammation during the replacement process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A medical foam dressing comprises a polyester base cloth, a colloidal layer and glassine paper, the colloidal layer is arranged on the polyester base cloth, the glassine paper is arranged on the colloidal layer, and the colloidal layer includes the following components in parts by weight: alginic acid 50 parts of calcium, 15 parts of polyurethane foam, 10 parts of gelatin, 5 parts of carboxymethyl chitosan, 15 parts of sodium carboxymethyl cellulose, 10 parts of rosin resin, 4 parts of kaolin and 2 parts of tea tree oil.

[0023] The preparation method is as follows:

[0024] (1) Take the polyurethane foam by weight, melt the rosin resin and vegetable oil in the reactor, and control the temperature at 120-135° C., add the rosin resin after melting completely, and keep warm;

[0025] (2) Weigh calcium alginate, gelatin, carboxymethyl chitosan, sodium carboxymethyl cellulose and kaolin by weight, mix well, slowly add in the reaction kettle under the condition of constant ...

Embodiment 2

[0028] A medical foam dressing comprises a polyester base cloth, a colloidal layer and glassine paper, the colloidal layer is arranged on the polyester base cloth, the glassine paper is arranged on the colloidal layer, and the colloidal layer includes the following components in parts by weight: alginic acid 53 parts of calcium, 20 parts of polyurethane foam, 13 parts of gelatin, 8 parts of carboxymethyl chitosan, 12 parts of sodium carboxymethyl cellulose, 9 parts of rosin resin, 3 parts of kaolin and 3 parts of tea tree oil.

[0029] The preparation method is as follows:

[0030] (1) Take the polyurethane foam by weight, melt the rosin resin and vegetable oil in the reactor, and control the temperature at 120-135° C., add the rosin resin after melting completely, and keep warm;

[0031] (2) Weigh calcium alginate, gelatin, carboxymethyl chitosan, sodium carboxymethyl cellulose and kaolin by weight, mix well, slowly add in the reaction kettle under the condition of constant s...

Embodiment 3

[0034] A medical foam dressing comprises a polyester base cloth, a colloidal layer and glassine paper, the colloidal layer is arranged on the polyester base cloth, the glassine paper is arranged on the colloidal layer, and the colloidal layer includes the following components in parts by weight: alginic acid 55 parts of calcium, 25 parts of polyurethane foam, 15 parts of gelatin, 10 parts of carboxymethyl chitosan, 10 parts of sodium carboxymethyl cellulose, 7 parts of rosin resin, 3 parts of kaolin and 5 parts of tea tree oil.

[0035] The preparation method is as follows:

[0036] (1) Take the polyurethane foam by weight, melt the rosin resin and vegetable oil in the reactor, and control the temperature at 120-135° C., add the rosin resin after melting completely, and keep warm;

[0037] (2) Weigh calcium alginate, gelatin, carboxymethyl chitosan, sodium carboxymethyl cellulose and kaolin by weight, mix well, slowly add in the reaction kettle under the condition of constant ...

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PUM

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Abstract

The invention provides a medical foam dressing and a preparation method thereof. The medical foam dressing comprises base cloth, a colloid layer and a peeling-off layer, wherein the colloid layer is arranged on the base cloth, the peeling-off layer is arranged on the colloid layer, and the colloid layer comprises alginate, polyurethane foam, gelatin, carboxymethyl chitosan, carboxymethyl cellulose sodium, rosin resin, kaolin and vegetable oil. The preparation method comprises the following steps: melting the polyurethane foam, the rosin resin and the vegetable oil in a reaction kettle, adding the rosin resin after the polyurethane foam, the rosin resin and the vegetable oil are completely melted, and performing heat preservation; uniformly mixing the alginate, the gelatin, carboxymethyl chitosan, carboxymethyl cellulose sodium and kaolin, slowly adding the alginate, gelatin, the carboxymethyl chitosan, carboxymethyl cellulose sodium and kaolin which are uniformly mixed to the reaction kettle, after uniformly mixing, lowering the temperature, and defoaming; uniformly coating mixtures to the base cloth, lowering the temperature, and covering the peeling-off layer on the coated colloid layer so as to obtain the medical foam dressing. The medical foam dressing disclosed by the invention has favorable mechanical and physical properties, the preparation technology is simple, the cost is low, and the industrialization is easy to realize.

Description

technical field [0001] The invention relates to the field of medical dressings, in particular to a medical foam dressing and a preparation method thereof. Background technique [0002] In recent years, the problem of aging in various countries has become increasingly serious, the incidence of diabetes and obesity has continued to increase, and the demand for chronic wound care such as decubitus ulcers and refractory ulcers among the elderly is increasing. The medical dressing market has a large room for growth. Research on wound healing shows that the purpose of using dressings is not only to cover the wound surface, but also to promote wound healing. According to the "moist wound healing" theory, wounds heal faster in a moist environment. [0003] The traditional dressing is absorbent cotton gauze, which has poor ability to absorb wound exudate and is not waterproof, and it is easy to cause secondary trauma and inflammation during the replacement process. Contents of the...

Claims

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Application Information

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IPC IPC(8): A61L15/42A61L15/40A61L15/34A61L15/32A61L15/28A61L15/26A61L15/18A61L15/44
Inventor 李苏杨徐勤霞
Owner SUZHOU BEC BIOLOGICAL TECH
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