Project Description

Ultrasonic Medical Stent Coating

The stent was implanted to dilate the atherosclerotic, plaque-stenotic arteries and to restenate the coronary vessels following myocardial infarction. However, in up to 20% of patients, regrowth of blood vessel inner wall cells or incomplete healing of the endothelial cell lining in the lumen of blood vessels can still cause recurrent clogged arteries, which is called restenosis.

The introduction of stent technology demonstrates excellent performance in preventing occlusion and restenosis. With the introduction and development of drug-eluting chemicals, stents have revolutionized the treatment of coronary artery disease by reducing stent restenosis and the need for target vessel revascularization. However, with the dramatic increase in the use of some drug-eluting chemicals, stent thrombosis has become an important concern. The formation of restenosis and thrombosis is the result of a combination of factors. The ideal stent coating for drug carrier materials and drug formulations not only inhibits thrombus formation, inflammatory response, and proliferation of smooth muscle cells, but also facilitates the process of reendothelialization.
The CHEERSONIC Ultrasonic Atomizing Nozzle generates very fine droplets and achieves a uniform controlled coating on medical and other sensitive or small devices. The nozzle jet speed is low and can therefore be used to apply a thin layer of valuable chemicals with minimal overspray. Ultrasonic nozzles provide some key advantages in stent coating and other precision medical device coatings. Ultrasonic nozzles also provide excellent repeatability in spray speed and droplet size, while reducing the amount of paint consumed.