METHOD FOR ANTI-ADHESIVE ANTIBACTERIAL COATING APPLICATION ON ORTHOPEDIC IMPLANTS FROM TITANIUM AND STAINLESS STEEL

摘要

FIELD: medicine.;SUBSTANCE: surface of the metal implants of titanium and stainless steel is cleaned by ion etching in a sealed chamber that is previously evacuated to a residual pressure of 9⋅10^-5-1⋅10^-6 Torr, followed by chamber filling with argon and chamber evacuation to a residual pressure of 4⋅10^-4-1⋅10^-3 Torr, and ion etching is performed with argon ions with an energy of 0.7-3.0 keV for 4-8 minutes, then an anti-adhesive antibacterial coating in the form of silver atoms and carbon in the form of tetrahedral diamond of the ta-C type is applied to the surface of orthopedic implants of titanium and stainless steel by dual spraying from two magnetron sources, using a magnetron source of carbon plasma with a power of 95-108 W, a source of silver atoms with a power of 2-20 W, and an ion source to stimulate the coating process with argon ions with inert argon gas ions energy from 0.1 to 1.5 keV, and anti-adhesive antibacterial coating application is continued in the chamber filled with argon and evacuated to a residual pressure of 4⋅10^-4-1⋅10^-3 Torr, while the two-component anti-adhesive antibacterial biocompatible nanocoating with a thickness of 9 to 1180 nm is applied to the metal surface of orthopedic implants containing nanogranules of spherical shape made of high-purity silver not less than 99.9% of purity, 4.5-9.5 nm in size with a continuous coating of carbon in the form of a tetrahedral diamond of ta-C type with a thickness of 0.4-1.2 nm formed on their surface. At that, graphite of the mark MPG-7, ARV or VCH is used as a magnetron source of carbon atoms for dual spraying from two magnetron sources.;EFFECT: high antiadhesive properties and high biocompatibility.;2 cl, 5 ex