Stent (medical device)

A stent is a small, flexible tube made of metal or polymer that's inserted into a narrowed or blocked blood vessel, typically in the heart, to keep it open and ensure proper blood flow. During a procedure called angioplasty, the stent is placed at the site of a blockage to support the vessel walls and prevent future narrowing. Stents can be coated with medication to reduce the risk of re-blockage. They are a common treatment for coronary artery disease and other vascular blockages, helping to restore normal circulation and reduce the risk of heart attack or other complications.