METHOD FOR MODIFYING MEDICAL PRODUCTS (ALTERNATIVES) Russian patent published in 2003 - IPC

Abstract RU 2206642 C2

FIELD: electrochemical methods for treatment of medical products made of titanium and its alloys. SUBSTANCE: proposed method intended to produce sterile bio-inert surfaces on implants includes dipping of products into aqueous solution of electrolyte and excitation of microarc discharges on their surfaces. Novelty according to first alternative is that microarc discharges are excited using superposition of anode or anode-cathode current in electrolyte having pH of 1-14 at voltage sufficient to form bioceramic coating of desired thickness on product surface. Novelty according to second alternative is that microarc discharges are excited using superposition of anode or anode-cathode current in hydroxyapatite-containing electrolyte having pH of 1- 14 at voltage sufficient to form bio-ceramic coating of desired thickness saturated with calcium and phosphor compounds on product surface. Novelty according to third alternative is that microwave discharges are excited using superposition of anode or anodecathode current in electrolyte having pH of 1-14 at voltage sufficient to form bio-ceramic coating of desired thickness on product surface or to texture the latter. Porous structure of surface obtained according to mentioned alternatives provides for filling it in future with polymers used in medicine and with antibiotics. EFFECT: provision for producing developed surface structure with desired elemental composition. 29 cl, 4 dwg, 1 tbl

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RU 2 206 642 C2

Authors

Mamaev A.I.

Mamaeva V.A.

Vybornova S.N.

Dates

2003-06-20Published

2000-01-31Filed