Medical absorbable burn and scald repair film and preparation method thereof
A technology for burns and casings, applied in the field of biomedicine, can solve the problems of rough pigskin cortex, impact on wound healing, and inability to completely remove it, and achieve the effects of small tissue adverse reactions, accelerated wound healing, and less bacterial contamination
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Embodiment 1
[0024] A preparation method of a medical absorbable burn and scald repair film of this embodiment, the preparation method is carried out as follows:
[0025] (1) Select the casings that have passed the quarantine and cut off the small intestine;
[0026] (2) Remove impurities: clean the inner wall of the casing of the small intestine, and separate and shed the intestinal chorion, mucous membrane, and serosa in the casing with special equipment;
[0027] (3) Virus inactivation: Soak the casing from which impurities have been removed in a 4% edible hydrogen peroxide solution at a water temperature of 37°C for 10 hours, and then wash it three times with purified water.
[0028] (4) Collagen degreasing: clean the above-mentioned sausage casing with clean water, soak it in 8% sodium chloride solution for 55 minutes, and then separate and remove the fat in the collagen of the casing to obtain relatively pure collagen tissue;
[0029] (5) Casing extension: After cutting the casing i...
Embodiment 2
[0036] A preparation method of a medical absorbable burn and scald repair film of this embodiment, the preparation method is carried out as follows:
[0037] (1) Select the casings that have passed the quarantine and cut off the small intestine;
[0038] (2) Remove impurities: clean the inner wall of the casing of the small intestine, and separate and shed the intestinal chorion, mucous membrane, and serosa in the casing with special equipment;
[0039] (3) Virus inactivation: Soak the casing from which impurities have been removed in a 5% edible hydrogen peroxide solution at a water temperature of 38°C for 12 hours, and then wash it 4 times with purified water.
[0040] (4) Collagen degreasing: clean the above casing with water, put it into 10% sodium chloride solution and soak for 60 minutes, then separate and remove the fat in the collagen of the casing to obtain relatively pure collagen tissue;
[0041] (5) Casing extension: After cutting the casing into pieces, use the e...
Embodiment 3
[0048] A preparation method of a medical absorbable burn and scald repair film of this embodiment, the preparation method is carried out as follows:
[0049] (1) Select the casings that have passed the quarantine and cut off the small intestine;
[0050](2) Remove impurities: clean the inner wall of the casing of the small intestine, and separate and shed the intestinal chorion, mucous membrane, and serosa in the casing with special equipment;
[0051] (3) Virus inactivation: Soak the casing from which impurities have been removed in an edible hydrogen peroxide solution with a water temperature of 39°C and a concentration of 6% for 14 hours, then wash it 5 times with purified water.
[0052] (4) Collagen degreasing: clean the above-mentioned sausage casing with clean water, soak it in 12% sodium chloride solution for 65 minutes, then separate and remove the fat in the collagen of the casing to obtain relatively pure collagen tissue;
[0053] (5) Casing extension: After cuttin...
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