MULTICOMPONENT TWO-LAYER BIOACTIVE MATERIAL WITH CONTROLLED ANTIBACTERIAL EFFECT Russian patent published in 2019 - IPC A61L27/30 A61L27/40 B82Y5/00 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to a two-layer multicomponent nanostructured coating for metal, polymer and bone implants used in replacement of damaged areas of bone tissue. Coating consists of a lower layer with thickness of 100 nm to 1,000 nm based on carbonitride and titanium diboride with introduction of additional components and an upper layer with thickness of 50 nm to 500 nm based on bioresorbable oxygen compounds with boron with introduction of additional components. Coating is made at ratio of components, atm%: Ti – 30–40; Ca – 0.5–1.5; P – 0.2–1; C – 15–30; O – 1–5; N – 20–35; B – 5–20 for lower layer and B – 30–50; O – 45–60; N – 0.5–1.5; C – 2–20 for the upper layer of the coating.

EFFECT: invention enables to obtain material for implants operating under load, and combining time-controlled antibacterial activity and osteoinductiveness that promotes accelerated integration of the implant into bone tissue and prevents development of inflammatory processes.

1 cl, 3 ex