Medicine applying membrane for operative wounds
A wound and drug delivery technology, applied in the field of medical materials, can solve problems such as poor ability to absorb exudate, poor adhesion of the wound surface, and poor hemostatic effect of materials, and achieve the effects of promoting healing, improving adhesion and preventing cross-infection.
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example 1
[0017] Take the herring skin, wash the fish skin twice with deionized water, and then air-dry it naturally, then put the air-dried fish skin into a pulverizer and pulverize it, pass through a 40-mesh sieve, weigh 300g of the sieved fish skin powder and soak it in 3L mass fraction In 0.3% sodium hydroxide solution for 2 hours, filter to obtain the filter residue, wash the filter residue with deionized water until the washing liquid is neutral, and obtain the pre-treated fish skin powder, add the pre-treated fish skin powder to 3L of 3% hydrogen peroxide by mass fraction, Stir at 300r / min for 3 hours, filter to obtain a filter cake, wash the filter cake with deionized water 3 times, and then wash the filter cake 2 times with absolute ethanol to obtain rough fish skin powder, measure 250mL methanol, 80mL acetic acid, add Stir in 600mL of deionized water at 300r / min for 20min, then add 200g of coarsely processed fish skin powder, continue stirring for 15h, then filter to obtain the...
example 2
[0019] Take the grass carp skin, wash the fish skin twice with deionized water, and then air-dry it naturally, then put the air-dried fish skin into a pulverizer and grind it, pass through a 40-mesh sieve, weigh 400g of the sieved fish skin powder and soak it in 4L mass fraction 0.3% sodium hydroxide solution for 2 hours, filter to obtain the filter residue, wash the filter residue with deionized water until the washing liquid is neutral, and obtain the pre-treated fish skin powder, add the pre-treated fish skin powder to 4L of 3% hydrogen peroxide by mass fraction, Stir at 350r / min for 4 hours, filter to obtain a filter cake, wash the filter cake with deionized water 4 times, and then wash the filter cake 2 times with absolute ethanol to obtain rough fish skin powder, measure 275mL of methanol, 90mL of acetic acid, add Stir in 675mL of deionized water at 350r / min for 25min, then add 220g of coarsely processed fish skin powder, continue stirring for 18h, then filter to obtain t...
example 3
[0021]Take silver carp skin, wash the fish skin with deionized water for 3 times, then air-dry naturally, then put the air-dried fish skin into a pulverizer and pulverize, pass through a 40-mesh sieve, weigh 500g of sieved fish skin powder and soak in 5L quality The fraction is 0.3% sodium hydroxide solution for 3 hours, filter to obtain the filter residue, wash the filter residue with deionized water until the washing liquid is neutral, and obtain the primary treatment fish skin powder, add the primary treatment fish skin powder to 5L mass fraction of 3% hydrogen peroxide , stirred at 400r / min for 5h, filtered to obtain a filter cake, washed the filter cake with deionized water for 5 times, and then washed the filter cake with absolute ethanol for 3 times to obtain rough fish skin powder, measure 300mL of methanol, 100mL of acetic acid, Add 750mL of deionized water, stir at 400r / min for 30min, then add 240g of coarsely processed fish skin powder, continue stirring for 20h, the...
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