What is the meaning of an inferior catheter

A lower catheter is a long-term indwelling catheter implanted by a doctor in a patient's body to facilitate the administration of medication during treatment. An inferior catheter is an important medical device that brings great convenience to the patient's treatment. The two main types of hypocatheters are central venous catheters and PICC catheters. These two kinds of catheters are mainly used for delivering drugs and nutritional fluids, and can be left in the body for a long time, which is convenient for patients' daily life and treatment.