可降解封堵器植入一周即被纤维蛋白类成分包裹，在高倍镜下可见有少量白细胞附着。

   植入一个月后，器械表面被组织覆盖约50%~60%，少数丝裸露，开始有大量细胞开始附着生长。

   金属封堵器植入一周后，还有大量金属裸露。

One week after implantation, the biodegradable occluder was coated with fibrin components, and a small amount of white blood cells could be seen attached at high magnification.

One month after implantation, about 50%~60% of the device surface was covered by tissue, a few silk were exposed, and a large number of cells began to attach and grow.

A week after the metal stopper was inserted, there was still a lot of metal exposed.