No. 20, 22, and 24. The size of the infusion port is No. 20, 22, and 24. The No. 20 infusion port is suitable for common infusions such as saline and glucose. The No. 22 infusion port is suitable for antibiotics, vitamins and other solutions. The No. 24 infusion port is suitable for blood products, etc. Large-dose infusion. The infusion port is a personal medical device. It should be clean and sterile before use and operated in strict accordance with the instructions to avoid the risk of infection and cross-infection.