Surgical dressing material with cooling property and preparation method of surgical dressing material

A technology with ability and any proportion, applied in the field of medical dressing materials and its preparation, can solve the problems of alleviating the pain of patients, and there is no way to reduce the temperature of the wound site and surroundings, so as to achieve the effects of pain relief, shortening the recovery time, and reducing the temperature of the wound surface

Inactive Publication Date: 2017-06-13
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, there is no consideration of the patient's feelings when the dressing is worn, there is no way to reduce the temperature of the wound site and...

Method used

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  • Surgical dressing material with cooling property and preparation method of surgical dressing material
  • Surgical dressing material with cooling property and preparation method of surgical dressing material
  • Surgical dressing material with cooling property and preparation method of surgical dressing material

Examples

Experimental program
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Effect test

preparation example Construction

[0033] like figure 1 Shown, there is the preparation method of the medical dressing material of cooling ability, comprises the steps:

[0034] Step 1. Weigh the copolyether according to the proportion by weight, and vacuum dehydrate the copolyether at 70-130° C. for 60-300 minutes. Preferably, the dehydration temperature is 130° C. and the dehydration time is 120 minutes.

[0035] Step 2: Weigh the isocyanate according to the proportion by weight and add it to the dehydrated copolyether in step 1, and react under vacuum at 50-80°C for 50-100min, preferably at a reaction temperature of 70°C, to obtain a prepolymer.

[0036] Step 3: Weighing the chain extender, foaming agent, surfactant, cell opening agent and deformation agent according to the proportion by weight, and fully mixing to obtain a uniform mixture.

[0037] Step 4: Mix the prepolymer with the mixture, pour into a mold preheated to 30-50°C, pressurize and vulcanize for 5-30min, cool, demould, and cut to obtain a dre...

Embodiment 1

[0040] Medical dressing material with cooling ability: by 65 parts by weight of copolyether, 20 parts by weight of isocyanate, 30 parts by weight of chain extender, 40 parts by weight of foaming agent, 2 parts by weight of surfactant, 3 parts by weight of cell opening agent and 20 parts by weight of Part phase change agent composition.

[0041] The preparation method of the above-mentioned medical dressing material with cooling ability: firstly weigh the copolyether according to the proportion by weight, and vacuum dehydrate the copolyether at 100° C. for 80 minutes. The isocyanate was weighed in proportion by weight and added to the dehydrated copolyether in step 1, and reacted at 50° C. for 100 minutes under vacuum to obtain a prepolymer. The chain extender, the foaming agent, the surfactant, the cell opener and the deformation agent are weighed according to the proportion by weight, and fully mixed to obtain a uniform mixture. Mix the prepolymer with the mixture, pour it i...

Embodiment 2

[0045] Medical dressing material with cooling ability: by 85 parts by weight of copolyether, 10 parts by weight of isocyanate, 40 parts by weight of chain extender, 60 parts by weight of foaming agent, 5 parts by weight of surfactant, 1 part by weight of cell opener and 35 parts by weight of Part phase change agent composition.

[0046] The preparation method of the above-mentioned medical dressing material with cooling ability: firstly weigh the copolyether according to the proportion by weight, and vacuum dehydrate the copolyether at 70° C. for 300 min. The isocyanate was weighed in proportion by weight and added to the dehydrated copolyether in step 1, and reacted at 80° C. for 60 minutes under vacuum to obtain a prepolymer. The chain extender, the foaming agent, the surfactant, the cell opener and the deformation agent are weighed according to the proportion by weight, and fully mixed to obtain a uniform mixture. Mix the prepolymer with the mixture, pour it into a mold pr...

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Abstract

The invention discloses a surgical dressing material with a cooling property and a preparation method of the surgical dressing material, belongs to the technical field of medicinal materials, and aims to solve the problems of providing a surgical dressing material which has a cooling effect and a wound protection function as well in the use process, and a preparation of the surgical dressing material. The surgical dressing material consists of the following components in parts by weight: 65-85 parts of copolyether, 10-20 parts of isocyanate, 20-40 parts of a chain extender, 40-60 parts of a foaming agent, 1-5 parts of a surfactant, 1-5 parts of an opening forming agent and 20-35 parts of a phase change agent. The surgical dressing material has good water absorption and air permeability, various testing results meet national technical requirements on surgical dressing materials, and meanwhile wound skin heat can be absorbed in the use process, so that discomfort of patients can be alleviated.

Description

technical field [0001] The invention belongs to the technical field of medical materials, and in particular relates to a medical dressing material which has a cooling effect during use and protects wound surfaces and a preparation method thereof. Background technique [0002] Since DR.Winter proposed the theory of moist wound healing in 1962 (that is, wounds heal faster under wet conditions than under dry conditions), medical dressings have gradually developed from dry dressings such as traditional gauze and absorbent cotton to hydrogel, gelatin, etc. Representative wet dressing. The market for new medical dressings is small, but they are significantly better than traditional dressings in dealing with burns, bedsores, ulcers and other chronic wounds. And although the unit price of new medical dressings is high, it can shorten the recovery time of patients, reduce the number of dressing changes, reduce the consumption of consumables during dressing changes, and generally red...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/32C08G18/10C08G18/12C08J9/12C08J9/08A61L15/26A61L15/20A61L15/46C08G101/00
CPCA61L15/20A61L15/26A61L15/46A61L2300/404A61L2300/412C08G18/10C08G18/12C08G18/4808C08G18/4837C08G18/7614C08G18/7671C08J9/122C08J2203/06C08J2375/08C08G2110/0083C08L75/08C08G18/3206
Inventor 王杰刘佳郇彦杨小牛
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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