The IV port, also known as the implantable central venous catheter system, is a closed IV infusion system that can be fully implanted in the body. The system first appeared officially in the European market in 1983. It has since been improved and is now in mature use in various countries as well as in many cities in China, including Beijing, Shanghai and Guangzhou. The device can be used for the infusion of various highly concentrated chemotherapeutic drugs, complete parenteral nutrition solution and the collection of blood transfusion and blood samples. For oncology chemotherapy patients and patients who need long-term infusion, it can reduce the pain and difficulty of repeated venipuncture, prevent the damage of irritating drugs to peripheral veins, and the patient’s daily life is not restricted, no need to change drugs, and can bathe, which greatly improves their quality of life. The indications for intravenous port implantation are as follows: 1. Patients who need long-term or repeated intravenous drug infusion; 2. Patients who need repeated blood transfusion and blood draw; 3. Patients who need infusion of foaming and irritating drugs, parenteral nutrition drugs, drugs with PH <5,>9 and hypertonic drugs. The advantage of implantable infusion port is that it can be carried for life, and all of them are buried in the body to reduce the risk of infection, and there is no inconvenience to bathing and other daily life caused by leaving the catheter outside the body. When sealing the tube, only saline can be used, without the adverse effects of heparin sealing.