METHOD OF ANTISEPTIC SURFACE PREPARATION OF PRODUCT MADE OF POLYMERIC MATERIAL Russian patent published in 2011 - IPC A61L31/10 A61L31/12 B82B3/00 

FIELD: medicine.

SUBSTANCE: invention refers to medicine and follow-up care (medical rehabilitation), and can be used for antiseptic surface preparation of medical devices made of polymeric materials used in minor orthopaedics. A method consists in forming on a device surface an antiseptic coating of a preparation containing biocide based on a nanodispersed powder of bentonite intercalated by silver or/and copper ions in a plastic binder solution. The particle size of the bentonite powder is no more than 150 nm. The antiseptic coating process is executed in two stages. At the first stage, a surface of the device made of a polymeric material based on silicon rubbers of molecular weight 2·10⁵-6·10⁵ is modified in low-temperature oxygen plasma at oxygen (O₂) consumption 0.8-7 l/h, working pressure equal to (70-135)±5 Pa, at high-frequency electromagnetic radiation of frequency 13.56 MHz and power 20-40 Wt, during (2-3)±1 minutes. At the second stage, the modified surface of the device is treated with the antiseptic preparation wherein the plastic binder is fluoracrylic polymer in solvent based on perfluoroisobutylmethyl and perfluorobutylmethyl esters in the ratio, wt %: fluoracrylic polymer - 1-3, solvent - the rest, with perfluoroisobutylmethyl ester - 20-80 wt % and perfluorobutylmethyl ester - 20-80 wt %. The antiseptic preparation has the following proportions: biocide: plastic binder in solvent, as 1:(50-100) weight parts.

EFFECT: use of the invention enables forming a coating with antiseptic and service effective properties on the surface of the devices made of organosilicon polymers of molecular weight 2·10⁵-6·10⁵.

2 cl, 3 ex