Preparation method of antibacterial stent for bone repair
A technology for bone repair and composite slurry, which is used in pharmaceutical formulations, medical science, prostheses, etc., can solve problems such as poor mechanical strength and low immunogenicity, and achieve high porosity, stable product quality, and simple preparation process. Effect
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[0028] Example 1
[0029] 1) Add 1.2 g of sodium alginate powder to 30 ml of ultrapure water, stir for 12 hours, and wait until it is fully dissolved to obtain a sodium alginate solution.
[0030] 2) Add 1.8 g of gelatin powder to the sodium alginate solution and stir for 2 hours to obtain a gelatin / sodium alginate composite slurry.
[0031] 3) Prepare 58s bioactive glass by sol-gel method, add 0.34g of bioactive glass to the gelatin / sodium alginate composite slurry (bioglass content is 10%), stir for 6h until mixed uniformly to obtain gelatin / alginic acid Sodium / bioglass composite slurry.
[0032] 4) Pour the gelatin / sodium alginate / bioglass composite slurry obtained in step 3) into a 3D printing cylinder to degas, and model in a 3D printer, and the printing slurry is formed into a bracket, where the size of the bracket is set as 10mm*10mm*4mm, printing needle diameter is 0.41mm, printing speed is 15mm / s, printing pressure is 1.5bar.
[0033] 5) Cross-link the stent of step 4), physi...
Example Embodiment
[0036] Example 2
[0037] 1) Add 1.8 g of sodium alginate powder to 30 ml of ultrapure water, stir for 15 hours, and wait until it is fully dissolved to obtain a sodium alginate solution.
[0038] 2) Add 3.0 g of gelatin powder to the sodium alginate solution and stir for 2 hours to obtain a gelatin / sodium alginate composite slurry.
[0039] 3) Prepare 58s bioactive glass by sol-gel method, add 2.06g of bioactive glass to the gelatin / sodium alginate composite slurry (bioglass content is 30%), stir for 4h until mixed uniformly to obtain gelatin / alginic acid Sodium / bioglass composite slurry.
[0040] 4) Pour the gelatin / sodium alginate / bioglass composite slurry obtained in step 3) into a 3D printing cylinder to degas, and model in a 3D printer, and the printing slurry is formed into a bracket, where the size of the bracket is set as 10mm*10mm*4mm, printing needle diameter is 0.41mm, printing speed is 20mm / s, printing pressure is 1.0bar.
[0041] 5) Cross-link the stent of step 4), first...
Example Embodiment
[0044] Example 3
[0045] 1) Add 2.4 g of sodium alginate powder to 30 ml of ultrapure water, stir for 18 hours, and wait until it is fully dissolved to obtain a sodium alginate solution.
[0046] 2) Add 1.2 g of gelatin powder to the sodium alginate solution and stir for 4 hours to obtain a gelatin / sodium alginate composite slurry.
[0047] 3) Prepare 58s bioactive glass by sol-gel method, add 3.6g of bioactive glass to the gelatin / sodium alginate composite slurry (bioglass content is 50%), stir for 6h until mixed uniformly to obtain gelatin / alginic acid Sodium / bioglass composite slurry.
[0048] 4) Pour the gelatin / sodium alginate / bioglass composite slurry obtained in step 3) into a 3D printing cylinder to degas, and model in a 3D printer, and the printing slurry is formed into a bracket, where the size of the bracket is set as 10mm*10mm*4mm, printing needle diameter is 0.41mm, printing speed is 30mm / s, printing pressure is 3.0bar.
[0049] 5) Cross-link the stent of step 4), physic...
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