RAPID HEAT TREATMENT FOR PAINTING OF SURGICAL NEEDLES Russian patent published in 2012 - IPC C22F1/18 C21D9/26 B21G1/00 A61B17/06 

FIELD: metallurgy.

SUBSTANCE: unit for heat treatment and painting of multiple bent surgical needles includes the following: conveyor for transfer of needles from source of bent surgical needles to receiver, housing located near conveyor, where housing has the first end, the second end and the hole from the first to the second ends, heat source located inside the housing to heat multiple needles at their transfer by means of conveyor from the first end to the second end of the housing, and system for provision of gas mixture containing partial oxygen concentration for oxidation and painting of needle surfaces at their passage through the housing. Needle heat treatment and painting method involves the following: needle transfer from source of bent surgical needles to receiver, heating of needles to the temperature below recrystallisation temperature at their passage from source of bent surgical needles to receiver, provision of gas mixture containing partial oxygen concentration and needle surface painting during heating at their passage through gas mixture.

EFFECT: needles have painted surface, are characterised by increase in rigidity and plastic bending moment of bent surgical needles.

19 cl, 9 dwg, 4 ex