Bone repair material containing multi-element biocover and preparation method thereof
A covering layer and bone repair technology, applied in medical science, prosthesis, surgery, etc., can solve the problems of low bonding strength and low biological performance of the surface coating, and achieve good ability to induce apatite deposition and high interface bonding The effect of strength, process and low cost
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Embodiment 1
[0026] The bulk substrate made of Ti-6Al-4V was sequentially polished with No. 50-800 water abrasive paper, and holes with a diameter of 2.5 mm were drilled, and then cleaned with absolute ethanol and dried. Fix a 20cm-long copper wire in the aperture, and cover the joint between the wire and the substrate with a high-temperature resistant rubber sleeve. The oxide film containing Ca and P was prepared by plasma electrolytic oxidation technology, and Ca(CH 3 COO) 2 ﹒ h 2 O0.07mol / L; NaH 2 PO 4 ﹒ 2H 2 O0.06mol / L; EDTA-2Na0.05mol / L, NaOH0.3mol / L, solvent is distilled water, positive current 0.5A, negative 0.5A; pulse frequency 50Hz; positive and negative duty ratio 50%, to form a ceramic film The thickness is 20 μm. A coating containing a trace amount of Mg osteoid was prepared by the pulling method, and a mixed solution of magnesium acetate and citric acid was prepared at a concentration ratio of 1:2, stirred evenly, and the solution was heated at 60°C for about 30 minut...
Embodiment 2
[0028] The block substrate made of pure titanium is sequentially polished with No. 50-2000 water abrasive paper, the hole diameter is 1 mm, and then cleaned with absolute ethanol and dried. A copper wire with a length of 10 cm is fixed in the aperture, and the outer layer of the wire is covered with a high-temperature resistant rubber sleeve. The oxide film containing Ca and P was prepared by plasma electrolytic oxidation technology, and Ca(CH 3 COO) 2 ﹒ h 2 O0.03mol / L; NaH 2 PO 4 ﹒ 2H 2O0.05mol / L; EDTA-2Na0.04mol / L, NaOH0.3mol / L, solvent is distilled water, forward voltage 200V, negative 50V; pulse frequency 1000Hz; is 5 μm. Prepare a coating containing trace amounts of Mn and Mg osteoid elements by pulling method, configure a mixed solution of magnesium acetate, manganese acetate and sodium edetate, the concentration ratio is 1:3:12, stir evenly, the solution is at 40 ℃ heating about 2h to make a sol. Immerse the metal substrate containing the plasma electrolytic o...
Embodiment 3
[0030] The block substrate made of pure titanium is sequentially polished with No. 50-1500 water-grinding sandpaper, the hole diameter is 5 mm, and then cleaned with acetone and dried. A 30cm-long aluminum wire is fixed in the aperture, and the outer layer of the wire is covered with a high-temperature resistant rubber sleeve. The oxide film containing Ca and P was prepared by plasma electrolytic oxidation technology, Ca(CH 3 COO) 2 ﹒ h 2 O concentration 0.07mol / L, NaH 2 PO 4 ﹒ 2H 2 The concentration of O is 0.1mol / L, the concentration of EDTA-2Na is 0.115mol / L, and the concentration of NaOH is 3mol / L. The forward voltage is 500V, the negative voltage is 100V, the pulse frequency is 100Hz, and the positive and negative duty cycle is 60%. The obtained composite film containing Ca and P has a thickness of about 30 μm. A coating containing a trace amount of Ce osteoid was prepared by the pulling method, and a mixed solution of cerium acetate and citric acid was prepared ...
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