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The study of valve hybrid fractal stent for the next generation brain aneurysm treatment

Akihiko Ichikawa, Takahiro ITO, Kouhei Shimogaito, Takashi Kubo and Toshio Fukuda

We propose a novel flow-diverter stent, “valve hybrid fractal stent” to treat the cerebral aneurysm what is one of a cerebrovascular disease. The stent has a valve part to path through a coil. The valve has fractal-pattern structures. So, the blood speed flowing into cerebral aneurysm is reduced. We had experiment of Particle Image Velocimetry (PIV) for evaluation of the inflow of cerebral aneurysm. By the experiment result, we visualized the stream line by using the cerebral aneurysm model. We succeeded in a speed reduction of the inflow with our valve hybrid fractal stent.