Interventional Cardiology is dedicated to research and technology for minimally invasive heart procedures. Coronary angioplasty is a medical procedure used to restore blood flow through a narrowed or blocked artery in the heart. You may have a stent placed in an artery as part of an angioplasty procedure. A stent is a small mesh tube that is used to treat narrowed or weakened arteries in the body. Clinical research involves new techniques, devices or medications used to treat coronary artery disease and acute coronary syndromes including myocardial infarction (heart attack) and unstable angina pectoris.