Application of biocompatible coatings

Application of biocompatible Pateks and BioPateks coatings on the implants by PACVD method Uniqueness and distinctive characteristics:

General data about the technology

Application of biocompatible coatings in Russia

The process is based on chemical deposition of coatings from vapor phase in terms of plasma activation (PACVD) without any use of vacuum and specialized chambers. Coating are applied at local exposure of high-speed atomic and molecular plasma flow with the surface being treated and its simultaneous plasma activation and sterilization. For that purpose a compact plasma-chemical reactor, cyclically moving with regard to treated surfaces being treated, is used. The items may also move with regard to a stationary plasma-chemical reactor. The coating is formed as a result of chemical reactions taking place close to the surface, on the surface and in the near-surface layer of the implant substrate. In this case, the main activation effects of plasma exposure, related to thermal and gas-dynamic properties of the plasma flow, availability of a directed flux of ionized and excited particles, emission of infrared, visible and ultraviolet radiation, formation of ozone, low-frequency and high-frequency plasma pulsation, are manifested. Minimum heating of the implants during application of coatings, not exceeding 150ºC due to the possibility of high-speed movement of the plasma-chemical reactor or implants, is a distinctive feature of this process.

The deposited coatings are biocompatible, i.e. inert to biological objects and contributing to integration of the implants into body tissues.

The coatings being applied are multilayer (50-250 layers) with a nanometer range of monolayers (2-20 nm). Liquid precursors based on organometallic and inorganic liquids of SETOL family, the total annual consumption thereof during single-shift operation of the equipment is approximately 0.5 liters, are used to apply these coatings. These coatings are amorphous, due to the use of precursors that contain amorphizing elements, as well as due to high rates of their cooling in the course of deposition, equal to (1010–1012) K/sec. Due to the amorphous state of these coatings, they can be referred to bioglasses or glass-ceramic coatings.

Specific features of the process:

Scope of application of coatings

Application of biocompatible coatings on the implant items used in traumatology, orthopedics of maxillofacial surgery and dentistry.

Examples of the works