High-ventilated degradable medicine-carrying skin wound dressing as well as preparation method and device thereof
A technology for skin wounds and air permeability, which is applied in the field of highly air-permeable and degradable drug-loaded skin wound dressings and its preparation, to achieve the effects of avoiding pain, inhibiting bacterial growth, and fast antibacterial performance
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[0023] The preparation of embodiment drug-loaded skin wound dressing
[0024] Specific process such as figure 1 Shown: First mix a certain amount of chitosan (0.5-1.2 grams), water (15-30 grams) and lactic acid (0.2-1 milliliters) at 40-60 O Stir at high speed with a magnetic stirrer in a constant temperature water bath for 4 hours, and the system is translucent golden yellow viscous; then put the colloidal solution into a watch glass, and put it in a low-temperature freezer (-78 O C) Freeze for 24 hours, and then use a freeze dryer to freeze-dry until fluffy and spongy, which is solid chitosan lactate.
[0025] Dissolve chitosan lactate with deionized water to make a 5-15% aqueous solution, add 1-5 grams of sodium hyaluronate solution, mix and stir; when the system appears uniform and transparent, add tert-butanol Appropriate amount (the concentration of tert-butanol is 3-15% of the whole system), and continue to stir; when the system appears uniform and transparent, add a...
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