What Are the Different Types of Stent Coating?

30% of patients undergoing cardiac vasodilation will still face narrowing of blood vessels within half a year. After these patients have undergone vasodilator surgery, they cannot recover normally, produce many cells, and block the blood vessels. As a result, they need to perform another bypass operation or angioplasty.

Drug-coated stent

accept

"Drug coated stents" prevent cardiovascular narrowing

Now, the medical community has invented a new method called "drug-coated stents" that can stop cell division. A stent used to expand a patient's blood vessel is coated with a drug, and antibiotics released by the drug can inhibit the growth of abnormal cells. In this way, the blood vessels will not be blocked by the cells and will not narrow.

Another risk of vascular occlusion is due to platelets forming blood clots on the stent, so patients receiving drug-coated stents will take anticoagulants for a period of time to prevent the formation of blood clots. An antibody coated stent derived from a drug-coated stent uses antibodies to stimulate cells to form epithelial tissue and thereby reduce the risk of thrombosis, but this therapy has not been proven to achieve the desired results in the near future. .

Professor Lin Yanling, director of the National Heart Center, said that if the "drug-coated stent" can prove its efficacy through the results of long-term clinical trials, it will replace heart bypass surgery and angioplasty. Every year, more than 3,000 heart patients undergo angioplasty.

He said that the new technology will benefit diabetics, because more than half of diabetics will still have problems with blood vessels being blocked again after performing heart bypass surgery. In addition, patients with narrow blood vessels are also ideal candidates for new therapies.

Suris, a Belgian cardiologist who advocates drug-coated stents, was invited to speak at the 11th Singapore Interventional Cardiology Specialty Technology Demonstration Conference yesterday. His clinical experiment showed that 238 patients who used the "drug-coated stent" therapy did not develop "angular restenosis" at all within six months.

Due to the success of the clinical trial, he expects to be approved for this operation in European hospitals in April this year.

Cost is currently quite high

However, Surrey also pointed out that the cost of placing a "drug-coated stent" is quite high, which is about US $ 2100 (about 3780 yuan), which is more than 1,000 dollars (about 1800 yuan) than the ordinary stent. ).

The medical profession in Asia has not yet arrived

Drug-coated stents: drug eluting stents

Angioplasty: angioplasty

Angiostenosis: Restenosis

Interventional Cardiology Specialty: Cardiovascular Intervention