According to the query of Beden Medical Devices Encyclopedia and Baidu Encyclopedia, an intracranial support catheter is a specialized tool used in neurological and cardiovascular surgeries, which usually consists of a catheter body, a catheter tip, a radiopaque marking, a connector, and other structures, and it is used to support and fix intracranial tissues for surgical operations. With good flexibility and adjustability, it can be adjusted according to the needs of surgery to adapt to different surgical operations. A stent, on the other hand, is a medical device used for the treatment of vascular diseases, usually made of metal or polymer material, which can be surgically implanted into blood vessels or cardiovascular system to keep the blood vessels open and unobstructed, and to prevent and treat vascular diseases. Thus, an intracranial support catheter is not the same as a stent.