One end of the B- type connector is connected to the trachea, and the other end is connected to the needle with a ferrule-type external thread.

External thread is connected to any needle, such as 1/4 turn standard syringe and 1/8 turnstandard syringe, which is convenient for connecting syringe and needle.

Metal aluminum, surface environmental oxidation treatment, corrosion resistance, longservice life, A, B type products are suitable for common metal silicone tube and plasticsilicone tube on the market.

In modern industrial and medical applications, the demand for precision and efficiency has driven the development of advanced needle systems. Among these, multi-tube metal needles have emerged as a versatile and high-performance solution.