Stents are commonly used to keep narrowed arteries open, but they can sometimes lead to complications like restenosis (re-narrowing of the artery). Nanotechnology can enhance stent performance by incorporating nanocoatings that release anti-inflammatory and anti-proliferative drugs, reducing the risk of restenosis. Biodegradable nanomaterials can also be used to create stents that gradually dissolve after fulfilling their purpose, eliminating the need for permanent implants.