the Boston Scientific Promus Elite is a coronary drug-eluting stent system. It is designed for use in patients undergoing percutaneous coronary intervention (PCI) procedures to treat coronary artery disease. Here are some key features and points related to the Boston Scientific Promus Elite coronary stent: Drug-Eluting Stent: The Promus Elite is a drug-eluting stent (DES), meaning it is coated with medication to help prevent the re-narrowing (restenosis) of the treated coronary artery. Drug Coating: The stent typically features a polymer coating containing an anti-proliferative drug. This drug is slowly released over time to inhibit the growth of tissue inside the stent, reducing the risk of restenosis. Cobalt Chromium Alloy: The stent is often made of a cobalt chromium alloy, known for its strength and flexibility. This material allows for a thin stent strut design, which can be beneficial in terms of deliverability and conformability. Delivery System: The stent is delivered to the target area using a catheter-based delivery system. The catheter is guided through the blood vessels to the site of the coronary artery lesion. Radiopaque Markers: Radiopaque markers on the stent aid in proper placement and visualization under X-ray guidance during the procedure.