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Problems solved by technology
However, the mechanical strength of the hydrogel prepared purely from chitosan is poor, which limits its application in wound dressings.
At the same time, the air permeability of the above-mentioned materials is poor, which is not conducive to the rapid healing of wounds.
Method used
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Embodiment 1
[0024] Embodiment 1: the preparation of antibacterial layer gel
[0025] Weigh 0.5 grams of chitosan and put it in a stirrer, add 100 milliliters of purified water, stir well, the stirring speed is 450r / min, until it is completely dispersed, add 3 grams of gelatin to the solution, and heat it on a water bath at 70°C. Until the gelatin is completely dissolved, then add 1.5 grams of chitooligosaccharides and 5 grams of oxidized sodium alginate and stir to make it completely dispersed. The stirring speed is 400r / min, and stir until a gel is formed. Finally, let stand to remove foam and pack Sterilization is the finished product.
Embodiment 2
[0026] Embodiment 2: the preparation of antibacterial layer gel
[0027] Weigh 2 grams of chitosan and put it in a stirrer, add 100 milliliters of purified water, stir evenly, the stirring speed is 500r / min, until completely dispersed, add 5 grams of gelatin in the solution, put it on the water bath of 70 ℃ and heat, Until the gelatin is completely dissolved, then add 2.0 grams of chitooligosaccharides and 3 grams of oxidized sodium alginate and stir to make it completely dispersed. The stirring speed is 450r / min, and stir until a gel is formed. Finally, let stand to remove foam and pack Sterilization is the finished product.
Embodiment 3
[0028] Embodiment 3: the preparation of antibacterial layer gel
[0029] Weigh 3 grams of chitosan and put it in a stirrer, add 100 milliliters of purified water, stir evenly, and the stirring speed is 500 r / min, until it is completely dispersed, add 2 grams of gelatin to the solution, and heat it on a water bath at 60 ° C. Until the gelatin is completely dissolved, then add 1.0 grams of chitooligosaccharides and 4 grams of oxidized sodium alginate and stir to make it completely dispersed. The stirring speed is 500r / min, and stir until a gel is formed. Finally, let stand to remove foam and pack Sterilization is the finished product.
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Abstract
The invention belongs to the field of medical material production technology, and specifically discloses a breathable moisture-absorbing type wound plaster. According to the multilayer breathable moisture-absorbing type wound plaster of the invention, a bacteriostatic layer is prepared from gel composed of chitosan, chitooligosaccharides, oxidized sodium alginate, gelatin and purified water, has short onset time and long action time, and has multiple effects such as hemostasis, analgesia and healing promotion and the like; a water absorbing layer can absorb the liquid on the skin and keep thewound dry, is composed of silica gel and carboxymethylcellulose sodium, and has good breathability while absorbing moisture; and a waterproof layer can make water vapor pass through and to be discharged to the outside, further keeps the skin dry, is suitable to be attached to the surface of human body for a long time, and avoids skin allergy or discomfort. The wound plaster of the invention has high water absorption, breathability, moisture-penetrability and good biocompatibility, can be widely used in dressing, healing and treatment of various wounds.
Description
[0001] This application is a divisional application of the invention patent application with the invention name "A moisture-absorbing and breathable wound dressing" and the application number "201811583499.8" submitted to the State Intellectual Property Office of the People's Republic of China on December 24, 2018. technical field [0002] The invention relates to a medical dressing, in particular to a moisture-absorbing and breathable wound dressing. Background technique [0003] Dressings are widely used in dressing and emergency treatment of various wounds due to their wide practicability and good effect, and are deeply loved by patients; earlier dressing products were mainly traditional adhesive plasters and black plasters. Patients are prone to allergies after using the dressing, and there will be tearing pain when it is torn off; at present, the newer dressings use water-soluble polymer materials as the matrix skeleton, which is rich in 60% water, and through the contai...
Claims
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Application Information
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