Preparing method for sodium alginate wound application with thrombin
An alginate and thrombin technology, applied in the field of medical care, can solve the problems of inability to moisturise wounds, stop bleeding, apply a single core, and cannot meet the needs of clinical doctors and patients, so as to promote wound healing and reduce sensitization. rate, the effect of increasing the contact area
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Embodiment 1
[0033] A preparation method of an alginate wound dressing with thrombin, the preparation process of which is as follows:
[0034] (1) Prepare ethanol aqueous solution of thrombin, the volume ratio of ethanol to water is 2:1, and the thrombin content is 50 units / ml;
[0035] (2) Put the alginate long bundle fiber into the reaction tank containing ethanol aqueous solution of thrombin and soak at constant temperature. The reaction tank is set with an "S" channel, the soaking time is 0.5h, and the temperature is 30°C;
[0036] (3) After soaking, pull the long-bundle fibers out of the reaction tank and dry them in an oven at a temperature of 35°C for 1 hour;
[0037] (4) After drying, a certain length of alginate short fiber with thrombin is made by cutting process, and the short fiber is crimped. The length of the cut short fiber is 38mm, and the number of crimps is 3 pieces / cm;
[0038] (5) The short fibers are woven into non-woven fabrics through non-woven processes such as ope...
Embodiment 2
[0043] A preparation method of an alginate wound dressing with thrombin, the preparation process of which is as follows:
[0044] (1) Prepare ethanol aqueous solution of thrombin, the volume ratio of ethanol to water is 3:1, and the thrombin content is 100 units / ml;
[0045] (2) Put the alginate long bundle fiber into the reaction tank containing ethanol aqueous solution of thrombin and soak at constant temperature. The reaction tank is set with an "S" channel, the soaking time is 1h, and the temperature is 35°C;
[0046] (3) After soaking, pull the long-bundle fibers out of the reaction tank and dry them in an oven at a drying temperature of 37°C and a drying time of 2 hours;
[0047] (4) After drying, a certain length of alginate short fiber with thrombin is made by cutting process, and the short fiber is crimped. The length of the cut short fiber is 60 mm, and the number of crimps is 4 pieces / cm;
[0048] (5) The short fibers are woven into non-woven fabrics through non-wo...
Embodiment 3
[0052] Embodiment 3: hemostatic performance test
[0053] Test group: choose the product that embodiment 2 makes as test group;
[0054] Control group: gauze hemostatic products on the market were the control group.
[0055] The test steps are as follows:
[0056] (1) Slowly inject 3% pentobarbital sodium into the rabbit's ear vein at 1ml / kg for anesthesia, then spread a drape on the left abdomen of the rabbit, and disinfect the surgical site with iodine tincture and 75% alcohol.
[0057] (2) Make a 5.0 cm longitudinal incision along the inner edge of the left side, about 1 cm left of the abdominal midline, cut the abdominal muscle to the peritoneal layer, and cut the peritoneum.
[0058] (3) Using 2 fingers or tweezers, find out the rabbit's spleen, and keep the spleen moist with saline.
[0059] (4) Blank control group: On the visceral surface of the spleen, two symmetrical wounds with a length of 1 cm and a depth of 1 mm were incised with a scalpel along the long axis of...
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