Introducing of Coronary Stents
Introducing of Coronary Stents – Ultrasonic Stent Coating System – Cheersonic
For the commonly used clinical drug stents and bare stents, these two types of stents are all metal stents, and the materials are all metal, including the previous stainless steel to the current cobalt-chromium alloy, which are permanent, and once placed in the blood vessel, they will not Replace it and it won’t fall out.
At present, a new bioabsorbable stent has emerged, which can be gradually degraded after entering the body and absorbed by the human body after several months. However, this stent has not been put into clinical application in large quantities in my country.
Coronary Bare Stent
Intracoronary bare metal stents are pure metal mesh tubes. The surface of this type of stent does not have any coating, and the purpose of implanting the coronary artery is to provide a dilatation support force for the narrowed coronary artery, so that the blood flow can be unblocked, and avoid the early retraction of the coronary artery caused by relying solely on the balloon expansion. Restenosis.
Intracoronary Drug-eluting Stent
This type of stent is based on the bare stent, and some drugs are coated on the stent with advanced technical means. After the stent is placed in the intravascular lesion, the drug is released to the coronary vessel wall in a controlled manner through elution. tissue and play an effect, control the growth of vascular endothelium.
Intracoronary Biodegradable Stent
Biodegradable scaffolds, as the name suggests, are scaffolds that can degrade themselves.
After implantation of coronary stents, the stents originally retained in the coronary arteries gradually degrade over time and disappear completely after a few months.
These stents are made of a special material that dissolves over time after opening a blocked blood vessel, leaving no metal stents in the patient’s blood vessels.
It can restore more self-function and exercise ability of blood vessels, and reduce the time of medication and the occurrence of coronary restenosis and acute thrombosis in stents after operation.
The long-term benefits of restoring blood vessels to a more natural state are important. However, it is not yet widely used in clinical practice.
Cheersonic ultrasonic coating systems have been used to spray anti-restenosis drug eluting polymer solutions onto implantable stents for decades. We have expertise in spraying hundreds of different medical grade polymer chemistries. Ultrasonic spray nozzles are advantageous in penetrating complex stent geometries, ensuring full coverage of all strut surfaces without webbing. The soft atomized spray adheres well to surfaces and coating morphology characteristics can be adjusted by modifying process parameters.
