▎ 摘　　要

NOVELTY - Slow release selenium absorbable material of orthopedic device, is claimed. The absorbable material is made by dispersing absorbable polymer in reinforcement toughening graphene, adding a biodegradable carrier material loaded with selenium, and heat stress molding; and then adopting degradation process to slowly release selenium trace element, with increased immunity and anti-bacterial antiinflammatory effect. The biodegradable carrier material is pure magnesium or magnesium alloy wire with hydroxyapatite porous ceramic layer on the surface. USE - Used as a slow release selenium absorbable material of orthopedic device. DETAILED DESCRIPTION - Slow release selenium absorbable material of orthopedic device, is claimed. The absorbable material is made by dispersing absorbable polymer in reinforcement toughening graphene, adding a biodegradable carrier material loaded with selenium, and heat stress molding; and then adopting degradation process to slowly release selenium trace element, with increased immunity and anti-bacterial antiinflammatory effect. The biodegradable carrier material is pure magnesium or magnesium alloy wire with hydroxyapatite porous ceramic layer on the surface, and is formed by adopting electrophoresis-micro-arc oxidation and chemical impregnation ion exchange reaction double load method. The selenium loaded carrier material has 10-75 volume% biodegradable carrier material, porous ceramic layer with pore size of 1-50 mu m, thickness of 1-100 mu m, 0.01-5 volume% graphene, and absorbable medical polymers (balance). An INDEPENDENT CLAIM is also included for manufacturing the orthopedic device, comprising (i) processing biodegradable carrier material by taking pure magnesium or magnesium alloy as carrier material, and drawing, rolling or extruding to form a wire or plate; (ii) adding sodium selenite into nano-hydroxyapatite powder containing alkaline electrolyte solution, carrying out electrophoresis-micro-arc oxidation of selenium by loading pure magnesium or magnesium alloy wire or plate, where the concentration of sodium selenite is 1x 10-5-1x 10-1 mol/l, electrophoresis-micro-arc oxidation voltage is 100-600 V, and the processing time is 2-60 minutes; (iii) immersing the selenium loaded with pure magnesium or magnesium alloy wire or plate carrier material on the surface into 1x 10-5-1x 10-1 mol/l sodium selenite or organic selenium solution, at constant temperature water bath temperature of 4-90 degrees C, impregnating for 0.5-6 hours, and carrying out chemical immersion ion exchange reaction for second time loading of selenium ions; and (iv) mixing the polymer slurry formed by dissolving in organic solvent or hot melting with graphene to form a mixed slurry, then using the mixed slurry for impregnating or coating carrier material loaded with selenium to form a preform, or arranging the first loaded selenium carrier material in a mold cavity, then injecting mixed slurry, thermal molding, extruding, injecting or drawing to prepare into a bar or plates, then machining into a desired structure orthopedic devices.