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AssigneeOlympus Corporation
InventorsTakamitsu SAKAMOTO, Hirofumi TANIGUCHI, Masato TAMAI
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For the purpose of firmly fusing a low-cost osteosynthetic implant having high osteoconductivity with a bone in a short period of time after implanting without having to perform treatment to restore surface hydrophilicity, a osteosynthetic implant is provided with a substrate that is formed of magnesium or a magnesium alloy and a porous anodic oxide coating that is formed on a surface of the substrate, wherein the anodic oxide coating has an outer surface that, due to the sizes and distribution of pores that are formed when generating the anodic oxide coating by means of anodic oxidation treatment, structurally prevents water from entering the pores while maintaining the hydrophilicity thereof.
An osteosynthetic implant comprising:
An osteosynthetic-implant manufacturing method in which anodic oxidation treatment is applied, in which a substrate formed of magnesium or a magnesium alloy is immersed in an electrolyte, which contains phosphoric acid at 0.1 mol/L or less, which contains ammonia or ammonium ion at 0.2 mol/L, which does not contain fluorine and chlorine, and which has a pH of 9-13, and electricity is passed therethrough.
Dependencies are inferred from the claim text.