Provided are medical supplies which have excellentantimicrobial activity and are superior in the durability ofantimicrobial activity and in biocompatibility and to a methodof producing the medical supplies.A base material is treated by carrying out anodicoxidation treatment to perform electrolysis by applying pulsedcurrent having a frequency of 50 to 10000 Hz to the base materialin an acid electrolytic bath or alkali electrolytic bath, toform a film having micro pores and/or micro unevennesses havinga density of preferably 5 x 10 4/mm2 on the surface of the basematerial and then, by carrying out iodine-impregnationtreatment to impregnate the film with iodine or iodine compounds .The iodine compound is preferably polyvinyl pyrrolidone iodine,.beta.-cyclodextrin iodine or silver iodide. Further, the basematerial is preferably a metallic material and any one of Tior Ti alloy, stainless steel, and a Co-Cr alloy havingbiocompatibility. The film may be formed by using any one ofmedicine treatment, thermal processing treatment andmechanical processing treatment or a combination of thesetreatments in place of the anodic oxidation treatment . Thisproduces such an effect that medical supplies which haveexcellent antimicrobial activity and are superior in thedurability of antimicrobial activity and in biocompatibilitycan be produced easily at low costs.
