METHOD OF METAL PLATING OF FINE TUBE INSIDE AND METAL PLATING DEVICE OF THAT AND THE FINE TUBE METAL PLATED INSIDE AND CANNULA GILDED INSIDE

摘要

The present invention provides a fine tube for use in manufacture of a cannula for medical use, a cannula manufactured by using the fine tube, and a method of forming a gold plating film on the inner circumferential surface of the fine tube. The method of plating the inner circumferential wall of a fine tube comprises the steps: allowing electrolyte of an electrolyte tank 13 having a plating material disposed therein to circulate inside the fine tube as a to-be-plated object using an electrolyte-circulating pump, the fine tube being applied with a negative polarity and the plating material being applied with a positive polarity; and disposing an electrode lead 17 at the inside of the fine tube, the electrode lead being coated with an insulating cladding 172 having a plurality of holes 173 formed thereon and being applied with a positive polarity.