A coronary stent is a hollow tube-shaped device that is surgically inserted into a blood vessel to keep it open.
The U.S. National Library of Medicine says a coronary stent may be used to treat the following conditions:
Coronary heart disease.
Peripheral artery disease.
Renal artery stenosis, for a narrowing of the artery that provides blood to the kidneys.
Carotid artery disease.
Abdominal aortic aneurysm, for a bulging of the aorta near the abdomen.