Porous artificial bone and preparation method thereof
An artificial bone and pore size technology, applied in the field of biomedical materials, can solve the problems of insufficient hardness and toughness, low mechanical strength of artificial bone, and poor biocompatibility, so as to meet individual needs, facilitate repair, and promote Adhesion effect
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Embodiment 1
[0034] A method for preparing a porous artificial bone, mainly comprising the following steps:
[0035] (1) Preparation of MgSr-TCP powder by chemical precipitation method.
[0036] According to the molar ratio of Mg+Sr+Ca and P in MgSr-TCP is 1.45, the molar fraction of Mg is 1%, and the molar fraction of Sr is 0.5%, the previously prepared strontium nitrate solution, magnesium chloride solution and ammonium hydrogen phosphate solution are simultaneously Slowly add it to the calcium nitrate solution at 80°C, adjust the pH value to 7 with ammonia water under constant stirring, and react for 2 hours. The precipitate was roasted in a muffle furnace at 1050 °C and kept for 2 hours. The obtained sample was fully ground in an agate mortar, and then the nano-sized MgSr-TCP powder was sieved through a standard sieve and stored in a desiccator for later use.
[0037] (2) The MgSr-TCP honeycomb grid frame was prepared by 3D printing method.
[0038] ①Design the honeycomb grid frame: ...
Embodiment 2
[0049] A method for preparing a porous artificial bone, mainly comprising the following steps:
[0050] (1) Preparation of MgSr-TCP powder by chemical precipitation method.
[0051] According to the molar ratio of Mg+Sr+Ca and P in MgSr-TCP is 1.70; the molar fraction of Mg is 20%, and the molar fraction of Sr is 10%, the strontium nitrate solution, magnesium chloride solution and ammonium hydrogen phosphate solution prepared in advance are simultaneously Slowly add it to the calcium nitrate solution at 90°C, adjust the pH value to 8 with ammonia water under continuous stirring, and react for 3 hours. The precipitate was roasted in a muffle furnace at 1050 °C and kept for 2 hours. The obtained sample was fully ground in an agate mortar, and then the nano-sized MgSr-TCP powder was sieved through a standard sieve and stored in a desiccator for later use.
[0052] (2) The MgSr-TCP honeycomb grid frame was prepared by 3D printing method.
[0053] ①Design the honeycomb grid frame...
Embodiment 3
[0062] A method for preparing a porous artificial bone, mainly comprising the following steps:
[0063] (1) The MgSr-TCP honeycomb grid frame was prepared by 3D printing method.
[0064] ①Design the honeycomb grid frame: use computer to carry out CAD 3D solid drawing to design a 3D model of a honeycomb grid cylinder with a diameter of 10 mm and a height of 5 mm, convert it into an STL file, and then divide this model into grids and divide layer processing. The design of the frame can design honeycomb grid structure frames of different scales and shapes according to the needs, not limited to cylinders.
[0065] ②Generation of scanning trajectory: The three-dimensional model is sliced in layers in the computer, and the model is converted into a series of two-dimensional plane graphics. For each plane graphics, the corresponding scanning trajectory is generated on the computer.
[0066] ③Preparation of MgSr-TCP honeycomb grid frame: fully mix the nano-sized β-TCP, MgO, SrO po...
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