CENTRAL VENOUS CATHETER KIT is mainly used to measure the central venous pressure (central venous pressure, central venous pressure), to evaluate the circulatory physiological parameters, and to estimate the amount of body fluids, a large number of rapid intravenous infusion, which often occurs in the surgery with a large amount of blood loss, or in the first aid to maintain blood pressure, long-term parenteral nutrition, long-term antibiotic injection, long-term analgesic injection, for the peripheral vein (small vein) the more irritant drugs should be injected from the central venous catheter, the hemodialysis pipeline, the chemotherapy of tumors, to prevent the occurrence of chemical phlebitis.