Numerical simulation of fluid-structure interaction under the condition of pulsatile blood flow of renal artery with radiofrequency electrode

Abstract

To investigate the effect of Fluid-Structure interaction of the renal artery with radiofrequency electrode under the situation of pulsatile blood flow, the ideal renal artery model that contains electrode was constructed by Solid Works. The renal arterial bifurcation vessel model with electrode and non-containing electrode was selected for comparison. Comsol software was applied to mimic the pulsatile blood flow. Six key points was selected for the analysis of hemodynamic parameters. The distribution of velocity, pressure, the equivalent stress and the deformation of the vascular wall were obtained. Compared to the pure arterial model, the speed is reduced and the pressure and equivalent stress are increased at point F When containing electrode. However, the deformation of vessel walls caused by this is very small and can be neglected. And the velocity pressure, equivalent stress and deformation of point B are relatively small at the same time. which to some extent protects the blood vessels. In combination, the insertion of RF electrode does little harm to the arterial blood vessels.