Method for preparing similar bone bioactivity coatings medical material by galvano-chemistry method
A bioactive and electrochemical technology, applied in the field of preparing bone-like bioactive coating medical materials, can solve the problems of long healing period, slow bonding, poor effect, etc., and achieves simple preparation process conditions, easy industrialization, and preparation process. The effect of conditional ease
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Embodiment 1
[0018] Ca(NO 3 ) 2 ·6H 2 O and NH 4 h 2 PO 4 Dissolve in distilled water, and prepare A solution with a calcium concentration of 4.5mM and a phosphorus concentration of 9mM.
[0019] Dissolve collagen in hydrochloric acid solution, mix with solution A, and stir to form solution B, so that the concentration of collagen in solution B is 0.2 g / L. And the pH value of the solution was adjusted to 5.0 with ammonia water, which was used as an electrolyte solution. The medical titanium alloy implant is used as the cathode, the platinum is used as the anode, and the saturated calomel electrode is used as the reference electrode. Immerse in the electrolyte solution. The temperature of the electrolyte solution is 37°C. The working distance between the positive and negative electrodes is 2cm, and the constant current mode is used to maintain the current at 15mA. , after 1 hour of deposition, the medical titanium alloy implant was taken out for cleaning, and after drying, the bone-li...
Embodiment 2
[0021] Ca(NO 3 ) 2 ·6H 2 O and KH 2 PO 4 Dissolve in distilled water, and prepare A solution with a calcium concentration of 42mM and a phosphorus concentration of 25mM.
[0022] Dissolve collagen in acetic acid solution, mix with solution A, and stir to form solution B, so that the concentration of collagen in solution B is 0.5 g / L. Adjust the pH of the solution to 3.5 with Tris buffer solution as the electrolyte solution. The medical cobalt-chromium-molybdenum alloy implant is used as the cathode, the platinum is used as the anode, and the silver chloride electrode is used as the reference electrode. Immerse in the electrolyte solution. The temperature of the electrolyte solution is 18°C. The working distance between the positive and negative electrodes is 20cm, and the constant voltage mode is used to maintain the voltage. After deposition for 0.5h, the medical cobalt-chromium-molybdenum alloy implant was taken out for cleaning, and the bone-like bioactive coating medi...
Embodiment 3
[0024] CaCl 2 and NaH 2 PO 4 Dissolve in distilled water, and prepare A solution with calcium concentration of 2mM and phosphorus concentration of 1mM.
[0025] Dissolve collagen in hydrochloric acid solution, mix with solution A, and stir to form solution B, so that the concentration of collagen in solution B is 3g / L. The pH of the solution was adjusted to 5.0 with ammonia water as the electrolyte solution. The medical titanium alloy implant is used as the cathode, the platinum is used as the anode, and the saturated calomel electrode is used as the reference electrode. Immerse in the electrolyte solution. The temperature of the electrolyte solution is 50°C. The working distance between the positive and negative electrodes is 2cm, and the constant current mode is used to maintain the current at 10mA. , After 24 hours of deposition, the medical titanium alloy implant was taken out for cleaning, and after drying, the bone-like bioactive coating medical material was obtained....
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