Term: Drug-Eluting Coating

Category: Coatings

Definition: Drug-eluting coatings are sophisticated biomedical surface modifications intended to load and facilitate the slow release of active pharmaceutical ingredients (APIs) from the surface of medical devices. A drug-eluting coating contains a polymer with a drug that either diffuses or elutes over a period of time. Drug-eluting coatings can be designed to deliver drugs in a sustained and site-specific manner to improve therapeutic benefit, reduce unwanted systemic side-effects, and prevent unwanted complications such as restenosis or infection. The release rate, release duration, and drug stability is determined by the composition and structure of the coating.

How They Work: Drug-eluting coatings slowly release medicine from the surface of medical devices to treat nearby tissue. They work by letting the drug pass through the coating, breaking down over time, or responding to changes like pH or temperature. Drug-eluting coating provides long-lasting, targeted treatment where it’s needed most.

Common Uses:

• Drug-eluting stents (for prevention of restenosis in coronary arteries)
• Antimicrobial-coated catheters and implants
• Orthopedic implants for anti-inflammatory or antibiotic release
• Wound dressings and tissue engineering scaffolds
• Targeted delivery systems in cardiovascular and oncological therapies

Related Content and Resources: 

Hydromer® Drug-Eluting Medical Device Coatings

Drug-Eluting Hydrophilic Coatings Prevent Coronary restenosis

Hydrophilic Coatings for Medical Devices: Intro, Benefits & Uses