Stents are small, tube-like devices used to keep blood vessels open, particularly in cases of narrowed or blocked arteries. They are commonly used in procedures like angioplasty to treat conditions such as coronary artery disease. Stents can be made from metal or polymer materials and may be coated with medication to help prevent re-narrowing of the artery. The placement of a stent is typically done through a minimally invasive procedure, allowing for quicker recovery times compared to traditional surgery. Patients often experience improved blood flow and reduced symptoms, making stents a vital tool in modern cardiology and vascular health management.