Drug Eluting Stent (DES) is a drug-device combination product. It is a metal stent coated with a pharmacological agent (drug). The drug interferes with the process of restenosis and prevents the reblocking of the artery. DES has been shown to reduce the incidence of restenosis from 20–30% range to single digits. A polymer is usually mixed -in with the drug to control the release of the drug into the vessel wall.

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