Drug-eluting stents are small, mesh-like tubes used to treat narrowed or blocked arteries, particularly in the heart. They are inserted during a procedure called angioplasty, where a balloon is inflated to open the artery. The stent remains in place to keep the artery open and is coated with medication that helps prevent the growth of scar tissue. These stents release the medication gradually over time, which reduces the risk of restenosis, or the re-narrowing of the artery. This innovative approach improves blood flow and decreases the chances of complications, making it a common choice for patients with coronary artery disease.