Medical trauma repair polymers dressings

A polymer material and wound repair technology, applied in medical science, absorbent pads, bandages, etc., can solve problems such as out-of-control growth, and achieve the effects of promoting vascular proliferation, good airtightness, and improved therapeutic effect

Inactive Publication Date: 2009-04-01
王新
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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Examples

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Embodiment Construction

[0044] Examples of the present invention are given below.

[0045] A medical wound repairing polymer material dressing is characterized in that the dressing includes a water-based polyurethane matrix and a hydrocolloid part bonded to the matrix, and the hydrocolloid part is composed of 20-30% sodium carboxymethyl cellulose , 13-20% pectin, 14-20% gelatin, 30-40% polyisobutylene and 5-10% polyethylene. Its preparation method can be:

[0046] 1.1 Preparation of waterborne polyurethane

[0047] After dehydrating the polyether under vacuum at 110°C for 1 hour, pour it and a certain amount of TDI into a four-neck flask equipped with a reflux condenser, mechanical stirring and a thermometer, add a few drops of catalyst, and raise the temperature to 75~80°C to reflect 1~ 2h, cool down to 50°C, add DMPA to extend the chain, use di-n-butylamine to test whether the NCO% content reaches the theoretical value, add a small amount of solvent to dilute after the reaction is complete, and n...

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Abstract

A medical polymer material dressing for repairing wounds is characterized in that the dressing comprises a water-based polyurethane matrix and a hydrophilic colloid part which is bonded on the matrix, and the hydrophilic colloid part is composed of 20-30 percent of sodium carboxymethyl cellulose, 13-20 percent of pectin, 14-20 percent of gelatin, 30-40 percent of polyisobutylene and 5-10 percent of polyethylene.

Description

1. Technical field [0001] The invention relates to a medical wound (wound) repairing polymer material dressing. 2. Background technology [0002] The skin is an important barrier of the human body. Various operations, trauma, burns, dermatitis, etc. will lead to skin damage and defects, causing various traumas. Wound repair is an important field of medical development. It is of great significance to avoid scars after repair. The process of wound repair requires the help of new medical materials, especially biomedical materials. The ISO (International Organization for Standardization) definition of biological materials in 1987 refers to "materials that are used for medical purposes and used to contact living tissues to form functions. "Inanimate materials" include materials with biocompatibility or biodegradation. According to different materials, biomedical materials can be divided into several categories such as medical polymer materials, medical metal materials and medic...

Claims

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Application Information

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IPC IPC(8): A61L15/28A61L15/32A61L15/24
Inventor 王新
Owner 王新
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