Stent. Coronary stent placement is done percutaneously (i.e. Through a small puncture in the groin or wrist) via an artery, and deploys a small tube/ mesh (the stent) in the blood vessels of the heart, in order to open up a blockage and keep that area open. It stays in your body indefinitely. Some stents are uncoated (bare metal), some are coated with medications in order to prevent further blockage.