Method for forming high-anti-bacterial-performance titanium-alloy artificial hip joint
A technology of hip joint and titanium alloy, which is applied in the forming of high antibacterial titanium alloy artificial hip joint and the forming of high antibacterial Ti-Cu artificial hip joint, can solve the problem that antibacterial coating easily damages tissue around implants, antibacterial The problems of low bonding strength between the coating and the substrate, stress deformation and cracks, etc., can promote the growth of attachment, promote embedded connection, and enhance the bonding strength.
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Embodiment 1
[0033] The present invention provides a method for forming a highly antibacterial titanium alloy artificial hip joint, using laser 3D printing and surface modification technology to form a highly antibacterial Ti-Cu-N artificial hip joint, specifically comprising the following steps:
[0034] Step (1): Scan the patient's hip joint with a CT machine to obtain a 3D data model, and perform layered slice processing on the model, with a thickness of 30 μm;
[0035] Step (2): After weighing 99% medical pure titanium powder with an average particle size of 30 μm and copper powder with an average particle size of 50 nm at a mass fraction of 1%, use a high-energy ball mill to grind the titanium alloy powder and copper powder at a rotational speed of 400 rpm, under the protection of argon with a purity of 99.99%, ball milling and mixing for 2 h to obtain titanium-copper alloy powder;
[0036] Step (3): Import the 3D data model of the hip joint processed in step (1) into the laser 3D print...
Embodiment 2
[0042] The difference between this embodiment and Example 1 is that in step (2) the titanium alloy is set as Ti6Al4V powder, its mass fraction is 97%, and the copper powder mass fraction is 3%; in step (3), the laser power is set It is 175 W, and the others are the same as in Example 1.
[0043] Antibacterial performance test was carried out on the highly antibacterial Ti-Cu-N artificial hip joint formed in this embodiment, Staphylococcus aureus was selected as the test object, and artificial The antibacterial performance of the hip joint, the results showed that after one day of the test, the antibacterial rate of the titanium alloy hip joint against Staphylococcus aureus reached 97%, and the antibacterial rate still reached 96% after the test for four days, which has good long-lasting antibacterial performance.
Embodiment 3
[0045] The difference between this embodiment and Example 2 is that in step (3), the laser scanning speed is set to 1100 mm / s;
[0046] Antibacterial performance test was carried out on the highly antibacterial Ti-Cu-N artificial hip joint formed in this embodiment, Staphylococcus aureus was selected as the test object, and artificial The antibacterial performance of the hip joint, the results show that the antibacterial rate of the titanium alloy hip joint against Staphylococcus aureus reached 96% after the test for one day, and the antibacterial rate still reached 95% after the test for 4 days, which has good long-lasting antibacterial performance.
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