The plasma pre-treating method and processing unit of operation stitching wire surface

The invention discloses a kind of plasma pre-treating method of operation stitching wire surface and processing units, and this method comprises the following steps: untreated operation sewing needle is placed on mini-roundabout (5) by a.；B. chamber is vacuumized；C. when the vacuum degree of chamber reaches 10 ‑3 When Pa or more, argon gas and oxygen are passed through to chamber by gas handling system (3), open discharge power supply and grid bias power supply, the mixed gas in chamber starts to discharge；D. stop being passed through oxygen, and increase the ventilatory capacity of argon gas to keep the air pressure in chamber identical as the air pressure in step c；E. hydrogen is passed through to chamber；F. it is filled with siliceous organic matter；G. stop being passed through gas and siliceous organic matter, after treated operation sewing needle is cooling, be drawn off.This method can effectively remove the organic pollutant of operation wire surface, while carry out micro-structured configuration to surface, and change the chemical structure and energy state on surface by siliceous organic matter, to improve subsequent immersion oil effect.