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Method for preparing bletilla striata hemostatic gauze

A technology for hemostatic gauze and Bletilla striata, which is applied in spinning solution preparation, wet spinning, medical science and other directions, can solve problems such as complex preparation process, environmental pollution, adverse reactions, etc., achieves simple spinning process, improves extraction efficiency, reduces The effect of the number of immersion

Active Publication Date: 2013-03-13
宜昌百吉生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent publication number is CN1803203A, and the publication date is December 31, 2005. The title of the invention is: a kind of anti-inflammatory, antibacterial and analgesic soluble hemostatic gauze and its processing method. This product has the functions of immediate hemostasis and broad-spectrum antibacterial, but The preparation process of this approach is complicated, the secondary pollution is serious, and it has a great impact on the environment, and the product is not easily absorbed by the human body.
In addition, the Chinese patent publication number is CN1466974A, the date of publication is January 14, 2004, and the title of the invention is: anti-inflammatory, antibacterial external synthetic drug, soluble hemostatic gauze and its processing method. Anti-inflammatory and analgesic effects, but the quinolones contained in this gauze will produce adverse reactions after being absorbed by the human body through the blood, such as gastrointestinal and central reactions, etc.
The Chinese patent publication number is CN101491688A, the publication date is July 29, 2009, and the title of the invention is: soluble hemostatic gauze and its preparation method. A large amount of chemicals such as sodium hydroxide, chloroacetic acid, etherified solution, hydrochloric acid and ethanol are needed in the process of dissolving the hemostatic gauze. Excessive chemicals and processing techniques will easily affect the quality of the gauze and the safety of the gauze, and cause certain environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] The preparation method of bletilla striata hemostatic gauze comprises the steps:

[0031] a. Extraction of Bletilla striata gum

[0032] Soak dried bletilla striata stems and distilled water at a mass ratio of 1:5 to 1:10 for 0.5h to 2h to fully and quickly dissolve the bletilla striata gum at a soaking temperature of 40 to 80°C, filter through layers of gauze to remove impurities , collect the bletilla striata gum filtrate.

[0033] Continue the above-mentioned soaking and filtering process for 4 to 10 times with the bletilla striata stem pieces after the bletilla striata gum has been extracted through the above steps. Fully dissolve to extract more bletilla striata gum, put the collected bletilla striata gum solution in a blast drying oven at 50-100°C to concentrate, reduce the water content of bletilla striata gum solution, thereby reducing the amount of absolute ethanol required for alcohol precipitation to obtain a bletilla striata gum concentrate with a mass con...

Embodiment 1

[0045] a. Extraction of Bletilla striata gum

[0046] Weigh 50 g of dried bletilla striata stems with a precision electronic balance and soak them in 500 ml of distilled water for 12 hours at room temperature, then put them in a constant temperature water bath at 40°C for 2 hours, filter and collect the filtrate, add 500 ml of distilled water to the bletilla striata stems, Soak in a constant temperature water bath at 40°C for 2 hours, filter and collect the filtrate, and repeat the extraction 4 times in this way, put the collected bletilla striata gum filtrate in a blast drying oven to concentrate to 100ml, add 100ml of absolute ethanol to the concentrated solution, and let the bletilla striata stand The gum was fully analyzed, the solution was removed by filtration, and the white precipitate was retained. Finally, the precipitate was washed twice with absolute ethanol and dried in an oven at 50°C to obtain Bletilla striata gum.

[0047] b. Preparation of bletilla striata gum ...

Embodiment 2

[0056] a. Extraction of Bletilla striata gum

[0057] Weigh 50 g of dried bletilla striata stems with a precision electronic balance and soak them in 350 ml of distilled water for 12 hours at room temperature. Soak in a constant temperature water bath at 60°C for 1 hour, filter and collect the filtrate, and repeat the extraction 7 times in this way, put the collected bletilla striata gum filtrate in a blast drying oven and concentrate it to 150ml, add 200ml absolute ethanol to the concentrated solution, let it stand to make the bletilla striata The gum was fully analyzed, the solution was removed by filtration, and the white precipitate was retained. Finally, the precipitate was washed 3 times with absolute ethanol and dried in an oven at 50°C to obtain Bletilla striata gum.

[0058] b. Preparation of bletilla striata gum spinning solution

[0059] Weigh 18g of the dried bletilla striata gum and dissolve it in distilled water to make a spinning solution with a solid content o...

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Abstract

The invention relates to a method for preparing a bletilla striata hemostatic gauze and belongs to the technical field of textile engineering. The preparation method provided by the invention employs the manner of carrying out the process of soaking bletilla striata stem blocks in distilled water a plurality of times, filtering and collecting the filtrate, and further comprises the following steps of: concentrating the collected filtrate, adding absolute ethyl alcohol to the concentrated bletilla striata gum solution, thoroughly standing and performing alcohol precipitation, thereby obtaining white precipitate; washing the white precipitate using absolute ethyl alcohol, and drying the precipitate for future use; preparing the dried bletilla striata gum into a spinning solution with water as a solvent and spinning the solution into long filaments with the absolute ethyl alcohol as a coagulating bath; knitting the long filaments into the gauze through needle weaving, machine weaving or non-weaving; and then cutting, disinfecting and packing the gauze, thereby obtaining the water-soluble hemostatic gauze. The raw material employed by the preparation method provided by the invention is the bletilla striata gum extracted from the bletilla striata stem blocks; the bletilla striata gum has excellent water-solubility; the bletilla striata long filaments can be degraded and absorbed in body and is good in compatibility with the organism without side effect on the wound. Chemicals involved with the preparation of the bletilla striata hemostatic gauze is only the absolute ethyl alcohol which can not generate harmful substances and has no pollution on the environment; and the coagulating bath for spinning by the wet method and the spinning process are simple and low in cost.

Description

technical field [0001] The invention relates to a preparation method of bletilla striata hemostatic gauze, which belongs to the technical field of textile engineering. Background technique [0002] Medical hemostatic gauze uses natural cellulose as the main raw material. After processing, the hydroxyl groups in the fiber are replaced by hydroxyethyl groups, so that the resulting hydroxyethyl modified gauze has good water solubility and salt solubility. At present, soluble hemostatic gauze is made of cotton fiber gauze for use by medical and health departments after degreasing, alkalization, etherification and alcohol washing. The hemostatic gauze preparation method is complex in process, involves many chemicals, and has potential hazards to human body and environment. At the same time, unprocessed gauze will adhere to the wound during use, which is likely to cause secondary trauma. Aiming at the above problems, a large number of dissolvable hemostatic gauzes have been desi...

Claims

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Application Information

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IPC IPC(8): A61L15/40A61L15/44D01D5/06D01D1/02D01F9/00
Inventor 杨红军向艳丽叶青徐卫林
Owner 宜昌百吉生物科技有限公司
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