*4.2.1.1 FSN inserting device*

FSN inserting device is a device specifically designed for the inserting of FSN acupuncture needle, which is developed by Nanjing FSN Medical Co., Ltd. It is convenient for the therapist to deliver the needle. It can not only reduce the pain of needle insertion but also ensure the accuracy and safety of the needling. The device consists of four parts, the base, the control button, the needle drive rod, and the groove, as shown in **Figure 2**.
