Angioplasty is a medical procedure used to open blocked or narrowed blood vessels, typically in the arteries. During the procedure, a small balloon is inserted into the affected blood vessel and inflated to widen the vessel and improve blood flow. Sometimes a stent is also placed to help keep the vessel open. Angioplasty is commonly used to treat conditions such as coronary artery disease, peripheral artery disease, and renal artery stenosis. It is minimally invasive and has a high success rate in improving blood flow and reducing symptoms associated with blocked arteries.