MANUFACTURING METHOD OF BIOCOMPATIBLE IMPLANT MATERIAL

摘要

PURPOSE:To obtain a biocompatible implant material of which an affinity for a living body and an adhesive intensity are preferable by supplying apatite powders to a thermo-plasma reacting section and by spraying flames of a high- frequency induction thermo-plasma accompanied by the apatite generated from a torch onto a surface of a core. CONSTITUTION:A high-frequency plasma torch 8 is coaxially and vertically installed in the upper part of a cylindrical water-cooled chamber 9 and a high- frequency thermo-plasma is projected downward from the opening to the lower end of the torch 8. A water-cooled sample stand 11 which can move vertically and rotate around the axis as a center is installed just below a thermo-plasma generating section (reaction section) 10 in the torch 8 and a substrate (core) 12 is put on the stand 11. A temperature of the substrate 12 is measured by a thermo couple 13. Apatite hydroxide or apatite powders 16 are introduced to a powder feed pipe 7 of a high-frequency plasma generating apparatus by a carrier gas 17, thereby projecting the apatite onto the surface of the metal or ceramic substrate 12. The apatite whose grain size is equal to 100 to 200mum is used.