The implantable intravenous port is a central venous access established through a subcutaneously implanted port connected to a catheter, mainly consisting of an injection seat for puncture and an intravenous catheter, providing reliable intravenous access for patients requiring long-term infusion therapy for infusion of various drugs, rehydration, nutritional support therapy, blood transfusion and blood sample collection. This technology has been widely used in coastal areas, and less carried out in the mainland. Indications 1.Patients who need infusion/infusion of chemotherapy drugs; 2.Patients who need long-term or repeated infusion of intravenous drugs; 3.Input of total parenteral nutrition fluid and other hypertonic fluids; 4.Infusion of blood and blood products, contrast agent pushing, general intravenous infusion, etc. can be performed .