In recent years, a new type of intravascular device called Woven EndoBridge (WEB) has been developed, and the number of cases treated with this device has been increasing. Although the WEB device has many advantages, there are few studies from a hemodynamic perspective, and there are still many unresolved research issues, such as the extent to which blood flow within the aneurysm is impeded by the WEB device, and how the mechanical stimuli associated with aneurysm enlargement or rupture change. In this study, we created a CAD model of the WEB and implanted it into an actual patient's vascular model to reproduce the situation of WEB-based cerebral aneurysm treatment on a computer. We performed fluid simulations of blood flow on the implanted model to investigate how blood flow within the aneurysm changes due to WEB treatment. The results showed that the implantation of the WEB reduced both the blood flow velocity within the cerebral aneurysm and the time-averaged wall shear stress on the aneurysm. On the other hand, it was revealed that strong disturbances in wall shear stress newly occurred at specific locations on the aneurysm.
SEHATA et al. (Wed,) studied this question.