Soluble hydroxyethyl modified cotton fiber fabric and preparation method thereof

A technology for soluble hydroxyethyl and fiber fabrics, which is applied in the field of medical soluble gauze, cotton fiber fabrics and their preparations, and soluble hydroxyethyl modified cotton fiber fabrics and their preparation fields, and can solve the problem that surgical hemostasis is difficult to grasp and dissolve. Fast speed and other problems, to achieve the effect of improving hemostasis operation time

Pending Publication Date: 2020-07-24
YUNNAN DEHA BIO PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After market testing, the patented product has the advantages of high solubility, high water absorption, fast hemostasis, and fast absorption, and it will not have negative effects on adding various drugs. It is easy to combine with various anti-inflammatory, hemostatic, and anti-infective drugs Drugs are used in combination; but in the process of marketing, the inventor found that the patented product also has the following disadvantages: the dissolution rate is too fast, and it is difficult to grasp in the actual operation of surgical hemostasis; the soluble hydroxyethyl modified cotton fiber fabric The surface of the gauze is too smooth, and the gauze made of soluble hydroxyethyl modified cotton fiber fabric needs to be improved in the process of hemostasis and human tissue

Method used

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  • Soluble hydroxyethyl modified cotton fiber fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation of water-soluble gauze

[0042] Degrease 300 grams of clean cotton, immerse it in 18-27% sodium hydroxide aqueous solution, react for 1-2 hours, take it out and place in a centrifuge to remove excess lye until the gauze contains 80-100% lye , Then put the deliquored yarn in a 10L rotary reactor, add 3500ml of 95% isopropanol, evacuate to -0.08Mpa, suck 540ml of ethylene oxide into the reactor several times, and rotate at 25℃ React for 20-24 hours, then neutralize the gauze with 66-120ml of acetic acid to make the pH 7-8, then wash the gauze with 95% ethanol until the sodium acetate content in the gauze is below 1%, and finally the washed gauze Place it in a constant temperature drying oven at 80°C and dry it to obtain 450g of water-soluble gauze. The time to completely dissolve in water is 30 seconds;

[0043] (2) Follow-up processing

[0044] The water-soluble gauze prepared in step (1) is subjected to needling treatment. The specific steps are as follows: p...

Embodiment 2

[0049] (1) Preparation of water-soluble gauze

[0050] Degrease 300 grams of clean cotton, immerse it in 18-27% sodium hydroxide aqueous solution, react for 1-2 hours, take it out and put it in a centrifuge to remove excess lye until the gauze contains 80-100% lye , Then place the deliquored yarn in a 10L rotary reactor, add 3500ml of 95% isopropanol, evacuate to -0.08Mpa, suck 750ml of ethylene oxide into the reactor several times, and rotate at 25℃ React for 20-24 hours, then neutralize the gauze with 66-120ml of acetic acid to make the pH 7-8, then wash the gauze with 95% ethanol until the sodium acetate content in the gauze is below 1%, and finally the washed gauze Placed in a constant temperature drying oven at 80°C and dried to obtain 540 g of water-soluble gauze. The time for complete dissolution in water is 20 seconds.

[0051] (2) Subsequent treatment of soluble hydroxyethyl modified cotton fiber fabric

[0052] The water-soluble gauze prepared in step (1) is subjected to ...

Embodiment 3

[0054] (1) Preparation of water-soluble gauze

[0055] Degrease 300 grams of clean cotton, immerse it in 18-27% sodium hydroxide aqueous solution, react for 1-2 hours, take it out and put it in a centrifuge to remove excess lye until the gauze contains 80-100% lye , Then place the deliquored yarn in a 10L rotary reactor, add 3500ml of 95% isopropanol, evacuate to -0.08Mpa, suck 750ml of ethylene oxide into the reactor several times, and rotate at 25℃ React for 20-24 hours, then neutralize the gauze with 66-120ml of acetic acid to make the pH 7-8, then wash the gauze with 95% ethanol until the sodium acetate content in the gauze is below 1%, and finally the washed gauze Placed in a constant temperature drying oven at 80°C and dried to obtain 540g of water-soluble gauze. The time for complete dissolution in water is 25 seconds.

[0056] (2) Follow-up processing

[0057] The water-soluble gauze prepared in step (1) is subjected to acupuncture treatment; the first step is the pre-needl...

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Abstract

The invention relates to a soluble hydroxyethyl modified cotton fiber fabric and a preparation method thereof, and belongs to the technical field of medical products. The soluble hydroxyethyl modifiedcotton fiber fabric comprises a soluble hydroxyethyl modified cotton fiber fabric body, and the surface layer of the soluble hydroxyethyl modified cotton fiber fabric body is formed by interweaving acompact cotton fiber cohesion entanglement structure and a warp and weft weaving structure. According to the soluble hydroxyethyl modified cotton fiber fabric, the warp and weft weaving structure ofgauze is changed, only a part of the warp and weft form is reserved in the new fabric, the fabric structure is more compact, fluff is formed on the surface, and the dissolving speed of the fabric is lower than that of a gauze structure in a dissolving process. In an actual operation of surgical hemostasis, the operation time is further improved.

Description

Technical field [0001] The invention relates to a cotton fiber fabric and a preparation method thereof, in particular to a soluble hydroxyethyl modified cotton fiber fabric and a preparation method thereof, and is a medical soluble gauze, belonging to the technical field of medical products. Background technique [0002] At present, the research on the modification of fibers has reached a certain depth, and some soluble modified fibers have appeared. Many patents have been published at home and abroad and the method of manufacturing water-soluble hemostatic gauze is also described in other documents. However, So far, the existing water-soluble hemostatic gauze is an ionic water-soluble cellulose derivative prepared by introducing a carboxyl group or a carboxymethyl group into the cellulose molecule. The production of hydroxyethyl cellulose has also been seen in the literature. However, only the production method of powdered products is used. Since the hydroxyethyl group in the hy...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/28A61L15/42D06C29/00D06M13/11D06M13/144D06M101/06
CPCA61L15/28A61L15/42A61L2400/04D06C29/00D06M13/11D06M13/144D06M2101/06C08L1/02
Inventor 周杰张德华李艳涛周晟
Owner YUNNAN DEHA BIO PHARMA
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