METHOD FOR MAKING MEDICAL IMPLANTS FROM BIOLOGICALLY COMPATIBLE MATERIALS Russian patent published in 2003 - IPC

FIELD: processes of laser synthesis of three-dimensional articles, namely methods for rapid making of powder materials porous medical precise biologically compatible implants for prosthesis, for example with internal voids by selective laser sintering of powder compositions. SUBSTANCE: method for making medical implants of predetermined individual shapes of biologically compatible materials by selective laser sintering of powder compositions comprises steps of successively layer by layer applying powder mixture; treating each layer by means of scanning laser irradiation while using as initial powder composition mixture of metallic powders on base of nickel and titanium at their mass relation 1 : 1; realizing reaction of self-propagating high-temperature synthesis of porous intermetallide phase, namely titanium nickelide (NiTi) in shield gas under control of laser irradiation; in order to enhance biological compatibility of synthesized medical implants, using initial powder mixture containing in addition hydroxy-appatite(-acrylate); in order to accelerate adaptation, infiltrating to pores of implants biostimulating additives. EFFECT: possibility for realizing rapid synthesis of preset individual shapes of porous functional medical implants by means of selective laser sintering from offered powder composition. 3 cl, 2 ex