Coronary Balloon Angioplasty is a non-surgical technique that is used to open or widen the passageway in narrowed coronary arteries. It relieves symptoms of coronary artery disease by improving the flow of blood to the heart muscle. During the procedure, a special catheter (a long, thin, flexible tube) with a small balloon at the tip is guided into the diseased artery. When the catheter reaches the narrow portion of the artery, the balloon is inflated, stretching the artery and flattening the fatty deposits against the artery’s wall.