Implants for bones, joints and tooth roots
AssigneeSumitomo Chemical Company, Limited
InventorsMasaya Aoyagi, Mikio Hayashi, Yasuyuki Yoshida, Yoshiaki Yao
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Abstract
An improved implant for a bone, a joint and tooth root comprising a metallic base material and a coating layer of hydroxyapatite which is formed by thermally sprayed hydroxyapatite powder or a mixture of hydroxyapatite powder and ceramic powder around the outer surface of the metallic base material, optionally a layer of a bonding agent and further a layer of ceramics are formed between the metallic base material and the layer of hydroxyapatite. The implant has a sufficient mechanical strength (e.g. impact strength) and further a good affinity to tissues of living bodies and is useful for implantation in various bones including tooth roots in living bodies.
Claims21
An implant for members of living bodies comprising a metallic base material, a layer of a material selected from the group consisting of hydroxyapatite and a mixture of hydroxyapatite and ceramics and a layer of a bonding agent formed between the metallic base material and the layer of hydroxyapatite or a mixture of hydroxyapatite and ceramics, said bonding agent being selected from the group consisting of molybdenum, tantalum, niobium, nickel-chromium-aluminum powdery mixture and nickel-aluminum powdery mixture.
Dependencies are inferred from the claim text.