Cobalt alloy partitioned bone trabecula single-compartment femoral condyle prosthesis and preparation method
A technology of trabecular bone and cobalt alloy, which is used in prostheses, metal processing equipment, additive manufacturing, etc., can solve the problems of powder failure to obtain good fusion, uneven microstructure, and poor mechanical properties, and achieve excellent results. Bone ingrowth performance, uniform bone ingrowth performance, and the effect of reducing stress shielding effect
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Embodiment 1
[0038] The preparation method of cobalt alloy partitioned trabecular single-compartment femoral condyle prosthesis comprises the following steps:
[0039] 1) Using cobalt alloy powder as the raw material, the first intermediate product of the cobalt alloy partitioned trabecular unicompartmental femoral condyle prosthesis was obtained by 3D printing, and the first intermediate product was put into a hot isostatic pressing furnace and heated in argon Under gas protection, raise the temperature to 1140°C, place it at a constant temperature of 170MPa for 3 hours, drop to normal pressure, cool down to below 200°C with the furnace, take it out, and obtain the second intermediate product:
[0040] 2) Place the second intermediate product in a programmed cooling box to cool down to -80°C at a rate of 1°C / min, place it at a constant temperature for 10 hours, and take it out of the programmed cooling box; place it in liquid nitrogen for another 16 hours, and adjust the temperature to Ro...
Embodiment 2
[0050] The preparation method of cobalt alloy partitioned trabecular single-compartment femoral condyle prosthesis comprises the following steps:
[0051] 1) Using cobalt alloy powder as the raw material, the first intermediate product of the cobalt alloy partitioned trabecular unicompartmental femoral condyle prosthesis was obtained by 3D printing, and the first intermediate product was put into a hot isostatic pressing furnace and heated in argon Under gas protection, raise the temperature to 1170°C, place it at a constant temperature of 140MPa for 2 hours, drop to normal pressure, cool down to below 200°C with the furnace, take it out, and obtain the second intermediate product:
[0052] 2) Place the second intermediate product in a programmed cooling box to cool down to -100°C at a rate of 1°C / min, place it at a constant temperature for 7 hours, and take it out of the programmed cooling box; place it in liquid nitrogen for another 24 hours, and adjust the temperature to Ro...
Embodiment 3
[0063] The preparation method of cobalt alloy partitioned trabecular single-compartment femoral condyle prosthesis comprises the following steps:
[0064] 1) Using cobalt alloy powder as a raw material, the first intermediate product of the cobalt alloy partitioned trabecular unicompartmental femoral condyle prosthesis is obtained through 3D printing, and the first intermediate product is put into a hot isostatic pressing furnace and heated in a helium Under gas protection, raise the temperature to 1200°C, place it at a constant temperature of 110MPa for 1 hour, drop to normal pressure, cool down to below 200°C with the furnace, take it out, and obtain the second intermediate product:
[0065] 2) Place the second intermediate product in a programmed cooling box to cool down to -120°C at a rate of 1°C / min, place it at a constant temperature for 5 hours, and take it out of the programmed cooling box; place it in liquid nitrogen for another 36 hours, and adjust the temperature to ...
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