支架释放后，将对端部血管产生较高的内应力，这会容易损伤此处的血管，引起血栓及内膜增生等问题。
Generally, after the stent releases, it will cause the end of blood vessel high stress, which is easy to damage the blood vessel, and arouse the thrombus, film hyperplasia and so on.
覆膜部分在支架体圆周方向是部分设置的，在覆膜一侧端部设有凸出的标记。
The tectorial membrane part is arranged partially at the circumferential direction of the stent body, and the end part of one side of the tectorial membrane is provided with a protrudent marker.
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