Ultrasonic Stent Coating System for Coated Stents

Ultrasonic Stent Coating System for Coated Stents – Cheersonic

Stents are commonly used to maintain or restore the patency of previously blocked or constricted passageways, for example, following balloon angioplasty procedures. Some stents may be used in combination with suitable coatings to form coated stents, for example, to treat aneurysms or to deliver therapeutic agents disposed on the stent or coating in close proximity to the target site.

Stents can be self-expanding or balloon-expandable, or they can feature both types of stents. The self-expanding stent can be delivered to the target site in a compressed configuration, and subsequently expanded by removal of the delivery sheath, removal of the trigger wire, and/or release of the diameter reducing lace. In stents made from a shape memory alloy such as nitinol, the shape memory alloy may be used to return the stent to a predetermined configuration upon removal of a sheath or other device that holds the stent in its pre-deployment configuration.

For balloon-expandable stents, a catheter and one or more balloons disposed over the catheter can be used to deliver and deploy the stent. The stent can be attached to a balloon during insertion until it reaches the target site, and then the stent is deployed by inflating the balloon to expand the stent so that the stent engages the target site. Alternatively, the stent may be placed alone in the vessel, and a subsequent catheter having an expansion portion may be inserted into the stent to expand the stent at the target site.

The ultrasonic drug-eluting stent spray coating system can be applied to the preparation of polymer coating for preventing vascular restenosis on the surface of implantable drug-eluting stent. Compared to conventional two-fluid nozzles, ultrasonic nozzles can spray a more uniform drug coating that completely covers the stent without the orange peel and adhesion to a complex stent. The soft atomized spray adheres well to surfaces and coating morphology characteristics can be adjusted by modifying process parameters. In addition, the stent coating obtained by ultrasonic spray coating technology is thinner than dip-coating. Ultrasonic spray coating technology can precisely control the amount of drug sprayed on the stent, making the control of the spraying more precisely.

The special nozzle for ultrasonic stent with national patent can realize accurate application of medicine, and the fixture specially equipped for stent is convenient for loading and unloading. This device has the characteristics of supporting multiple series and multiple types of stents, high drug utilization, accurate drug delivery, and high uniformity of the stent membrane layer.

Chinese Website: Cheersonic Provides Professional Coating Solutions