Surgical dressing bandage
A hemostatic patch and surgical technology, applied in the field of medical assistance, can solve the problems of not very strong absorption capacity, affecting the debridement process, and poor ability to absorb exudate, achieve excellent antibacterial properties and thermal stability, inhibit bacterial growth, prevent The effect of wound infection
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Embodiment 1
[0029] (1) Take 4wt% of discarded or recycled sodium alginate fibers, add sodium hyaluronate with 3% of the mass of sodium alginate fibers to it, adjust the pH to 5.5 with an organic acid solution with a mass fraction of 30%, and then heat, Set the temperature to 65°C, keep the temperature for 50 minutes, cool to room temperature naturally, and collect the filtrate by filtration;
[0030] (2) Put the above-mentioned filtrate into an oven, dry at 90°C for 3 hours, then put the dried filtrate into a pulverizer for crushing, pass through a 60-mesh sieve, and mix the powder with a solid-to-liquid mass ratio of 1.5:3 Mix with water, and use 10wt% acetic acid solution to adjust the pH of the mixed solution to 4.0, leave it to stand for acidification treatment for 3 hours, filter, collect the filtrate, put the filtrate into an air dryer to air dry, put it into a pulverizer after air drying, and pass 240 mesh sieve to obtain acidified sodium alginate powder;
[0031] (3) Mix 40 mesh ...
Embodiment 2
[0035] (1) Take 6wt% of the discarded or recycled sodium alginate fiber, add sodium hyaluronate with 3% of the weight of sodium alginate fiber to it, use an organic acid solution with a mass fraction of 40% to adjust the pH to 5, and then heat, Set the temperature to 65°C, keep the temperature for 40 minutes, cool to room temperature naturally, and collect the filtrate by filtration;
[0036] (2) Put the filtrate obtained above into an oven, dry at 70°C for 1 hour, then put the dried filtrate into a pulverizer for crushing, pass through a 90-mesh sieve, and mix the powder with a solid-to-liquid mass ratio of 2.5: 1 Mix with water, and use 50wt% acetic acid solution to adjust the pH of the mixed solution to 4.5, leave it to stand for acidification treatment for 3 hours, filter, collect the filtrate, put the filtrate into an air dryer to air dry, and put it into a pulverizer after air drying, Pass through a 240-mesh sieve to obtain acidified sodium alginate powder;
[0037] (3)...
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