Traditional Culture Encyclopedia - Traditional festivals - What does the beginning of trocar model 22G or 20G stand for?

What does the beginning of trocar model 22G or 20G stand for?

In the trocar model, 22G stands for blue and 20G stands for pink. There are also 24G, 18G and 16G, which represent yellow, green and gray respectively.

Trocar needle is a new therapeutic tool which puts traditional acupuncture needle into piston sleeve. Intubation is a special needle holder, equipped with special acupuncture needles, which can stimulate and release local muscles through nerve conduction, adjust the body function of organs or diseased parts, and achieve the purpose of treatment.