What is the history of coronary stent system?
So far, coronary stent systems have developed three generations, namely bare metal stents, drug coated stents and biodegradable stents.
In 1993, bare metal coronary stent systems were first used in clinic. But it was found that the probability of in stent restenosis was still relatively high. The main cause of restenosis was vascular endothelial hyperplasia.
Therefore, people coated the surface of stents with anti-proliferative drugs, namely drug coated coronary stent systems. In 2003, drug coated stents began to be used in clinic. Later, the coated drugs and carriers were further improved.
However, the technology is constantly improved. Ideally, after the coronary stent system is completed and the blood vessels are reshaped, we hope that the stent can dissolve and disappear so as to avoid continuous foreign body stimulation. The third generation of biodegradable coronary stent system came into being. However, because the material cannot reach the level of metal stent, the results of clinical trials are not satisfactory. The future trend of biodegradable stents may require more technical updates and more perfect surgical procedures.
Size Matrix of Coronary Stent System
Diameter(mm) | Length(mm) | |||||||||||||
8 | 12 | 13 | 15 | 16 | 20 | 21 | 24 | 28 | 29 | 33 | 38 | 40 | ||
2.00 | √ | √ | √ | √ | √ | √ | √ | √ | - | - | - | - | - | |
2.25 | √ | √ | √ | √ | √ | √ | √ | √ | - | - | - | - | - | |
2.50 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
2.75 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
3.00 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
3.50 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
4.00 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
4.50 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
5.00 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
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