METHOD OF PROCESSING METAL MATERIAL FOR MEDICAL INSTRUMENTS

摘要

To form to a complicated shape as designed a metal material for medical instruments, such as titanium and a titanium alloy, which have a high non-eluting feature and a high corrosion resistance as materials to he implanted and as materials for medical instruments, such as an instrument for a surgical operation, by excellent precision processing techniques, i.e. electric discharge machining, whereby a product can fully display the function thereof specific to a medical instrument, and be furnished with a high non-eluting feature and a high corrosion resistance. When the electric discharge machining having an excellent processability is applied to the production of a medical instrument from a metal material for the production of such instruments which has a high non-eluting feature and a high corrosion resistance, such as titanium or a titanium alloy, an electrode wire is formed out of titanium or a titanium alloy or platinum or a platinum alloy so as not to spoil the inherently high non-eluting feature and corrosion resistance of these metal materials, and so as to enable a medical instrument to he produced as designed with a high machining precision. The manufacturing of a medical instrument of a complicated shape out of a metal material having high non-eluting feature and corrosion resistance is done by electric discharge machining so as not to spoil the inherently high non-eluting feature and corrosion resistance and so as to prevent impurities from being mixed in the product from a machining jig, ensure the high corrosion resistance and non-eluting feature of the product in a living body, and contribute much to various kinds of industrial fields, such as medical, dental and stock farming fields.