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Medical hydrophilic fiber dressing

A fiber and cellulose fiber technology, which is applied in the field of medical hydrophilic fiber dressings, can solve the problems of low liquid absorption, low fiber tensile strength, and low product performance.

Active Publication Date: 2018-11-09
SUZHOU HENRUI DISHENG MEDICAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The CMC fibers or dressings prepared by these methods have low liquid absorption, low fiber tensile strength, and low product performance.

Method used

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  • Medical hydrophilic fiber dressing
  • Medical hydrophilic fiber dressing
  • Medical hydrophilic fiber dressing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Embodiment 1 fiber modification (cellulose fiber selects lyocell fiber for use, and special auxiliary agent selects Tween 80 for use)

[0112] Modification method 1: Immerse 10g fiber in 100ml 15% NaOH aqueous solution, basify at 30°C for 60min, then add 100ml 30% chloroacetic acid aqueous solution, etherify at 75°C for 140min, then neutralize the modified fiber with acetic acid, 60% ethanol solution Wash 5 times, wash 2 times with 100% ethanol, and dry in a 40°C oven. The measured substitution degree of the modified fiber is 0.38, and the tensile strength is 18cN / tex.

[0113] Modification method 2: Cellulose fiber, soak 10g fiber in 50ml 10% NaOH aqueous solution, alkalinize at 30°C for 60min, then add 100ml 20% chloroacetic acid isopropanol solution. After etherification at 75°C for 60 minutes, the modified fiber was neutralized with acetic acid, washed five times with 60% ethanol solution, twice with 100% ethanol, and dried in an oven at 40°C. It is measured that ...

Embodiment 2

[0118] Example 2 Fiber moisture content and auxiliary agent content detection

[0119] After the fiber modified by the method of the present invention is subjected to drying and humidity-conditioning treatment, the moisture content test is carried out according to the measurement method of weight loss on drying in the third part of the "People's Republic of China 2015 edition", and the first part of the test method of "yy 0472.1-2004 medical nonwoven compress" - Test the content of additives in fibers by the method in "Nonwoven Fabrics for Compression Production". The test results are shown in Table 2.

[0120] Table 2

[0121]

[0122]

Embodiment 3

[0123] Embodiment 3 prepares dressing

[0124] The fiber modified by modification method 1 in Example 1 was prepared by non-woven process to obtain finished dressing C1. The dry strength of dressing C1 was measured to be 1.2 N / cm, and the wet strength was too low to be measured. After the fiber modified by method 2 was prepared into finished dressing C2 by non-woven process, the dry strength of dressing C2 was measured to be 1.8 N / cm, and the wet strength was too low to be measured. After the fiber modified by method 3 was prepared into finished dressing C3 by non-woven process, the dry strength of dressing C3 was measured to be 1.9 N / cm, and the wet strength was too low to be measured.

[0125] The test data of this example shows that the dry strength of the finished dressing 1 modified by the method of the present invention is 10.7N / cm, and the wet strength is 0.5N / cm, which proves that the method of the present invention can effectively reduce fiber proofing damage after ad...

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Abstract

The invention relates to a medical hydrophilic fiber dressing. Specifically, the invention discloses a cellulose fiber carboxymethylation treatment liquid which can effectively improve the performanceof the obtained sodium carboxymethyl cellulose fiber by adding a specific assistant to the treatment liquid, thereby facilitating preparation of dressing with excellent strength and liquid absorption.

Description

technical field [0001] The invention relates to a medical dressing, in particular to a medical hydrophilic fiber dressing. Background technique [0002] Medical dressings have been an important class of medical textiles since their invention. Its main function is to control wound exudate, protect the wound, replace the damaged skin as a temporary barrier, and provide an environment conducive to wound healing. With the development of wound healing theory and technological progress, traditional cotton gauze dressings have been gradually replaced by new dressings due to their limited water absorption and easy adhesion to the wound skin. [0003] The development of new medical dressings originated from the discovery of wet therapy, that is, wounds heal faster in a wet state than in a dry state, so that new medical dressings gradually entered the medical field. Compared with traditional dressings, the new medical dressings can remove pus and toxic components from the wound surf...

Claims

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Application Information

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IPC IPC(8): D06M11/38D06M13/21D06M13/188A61L15/42A61L15/28D06M101/06
CPCA61L15/28A61L15/42D06M11/38D06M13/188D06M13/21D06M2101/06C08L1/286
Inventor 俞鸿飞刘博文周宁辉汪亚柱
Owner SUZHOU HENRUI DISHENG MEDICAL CO LTD
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