METHOD OF MEDICAL INSTRUMENTS WITH HARD-ALLOY WORKING PARTS PROCESSING Russian patent published in 2025 - IPC A61B17/06 A61B17/30 C22F1/02 C22F1/18 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to a method for processing of medical instruments with hard-alloy working parts. In compliance with proposed method, after polishing, tools are subjected to low-pressure high-frequency (HF) capacitive discharge plasma flow in vacuum chamber in the medium of plasma-forming gas mix consisting of 70 wt.% of argon and 30 wt.% of propane-butane, at pressure in vacuum chamber of 13.3-50 Pa, flow rate of plasma-forming gas mixture of 0.025-0.06 g/s, discharge power of 0.5-1.5 kW and treatment time of 60-240 s. Medical instruments are placed in the inter-electrode space between parallel vertically arranged flat electrodes perpendicular to the flow of the plasma gas mixture at distance of 5-10 mm from the HF electrode, and HF electrode area is 1.78 times smaller than grounded electrode.

EFFECT: increasing wear resistance of medical tools with hard-alloy parts in 2-4 times, at the same time simultaneously reducing surface roughness of hard-alloy working parts by 55-95%.

1 cl, 2 dwg, 2 tbl