Medical Stent Coating System

Implantation of the stent expands the narrowed arteries due to atherosclerotic plaques and restores coronary blood flow after myocardial infarction. However, in up to 20% of patients, re-growth of cells in the inner wall of the blood vessel or incomplete healing of the endothelium intima in the blood vessel lumen can lead to recurrent arterial occlusion, called restenosis.

Over the past decade, stent technology has been introduced, which has shown superior performance in preventing obstruction and restenosis compared to traditional angioplasty. With the introduction and development of drug-eluting chemical methods, stents have radically changed the treatment of coronary artery disease by significantly reducing the restenosis of the stent and the need for revascularization of target vessels. However, with the dramatic increase in the use of these drug-eluting chemical methods, stent thrombosis has become a major concern. Because restenosis and thrombosis are caused by a variety of factors, the ideal stent coating (including drug carrier materials and agents) should not only inhibit the formation of thrombus, inflammatory response and proliferation of smooth muscle cells, but also promote endothelial regeneration process.

Cheersonic nozzles produce very fine droplets of fine mist with a narrow size distribution, which results in a thin and accurate uniform coating, which enhances biocompatibility and drug delivery, and prevents restenosis and thrombosis.

Ultrasonic atomizer nozzles produce fine droplets to form a uniform, controllable coating on medical and other sensitive and / or small devices. The spray speed of the nozzle is very low, so it can be used to spray thin layers of valuable chemicals while minimizing excessive spraying. Ultrasonic nozzles have several key advantages in stent coatings and other precision medical device coating and manufacturing applications. Cheersonic nozzles not only greatly reduce paint consumption, but also have excellent repeatability in terms of spray speed and droplet size.

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