Using ultrasonic spray nozzles to coat drug-eluting stents

Polymer coatings containing drugs released over time are used to inhibit restenosis in bare-metal stents; however applying coatings to stents, which have intricate geometries, is challenging. Ultrasonic atomising spray nozzles can be effective in achieving continuous and uniform coatings. This article describes unique nozzle designs, the methodology and the results obtained.