Tungsten needle has the advantages of high hardness, high strength and strong ductility. And such a needle is not easy to rust and not easy to break with durability. While the tip of a steel needle is brittle and easy to fold, and the diameter of the tip cannot be processed to the micron level. So, tungsten needle is more suitable for inner ear anatomy than steel needle.
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With the development of auditory physiology, the technique of microdissection of living specimens of the inner ear and the isolation of various tissues and even individual cells of the inner ear has become an important part of auditory research. On the basis of electrophysiological method of preparing tungsten wire microelectrodes, some experts adopt electrolysis to prepare tungsten needles for anatomy of the inner ear. The production process is simple and can be completed in a few minutes.