Bidirectional fluid-structure interaction analysis on pressure transmission of the venaflow / 中国医学物理学杂志

ABSTRACT

Objective To establish a bidirectional fluid-structure interaction model of the venaflow acting on the lower limb for investigating its pressure and depressure modes,and analyzing the velocity distribution of venous flow in the lower limb and therapeutic efficacy,thereby providing guidance for the resonable setting of working parameters of the Veneflow.Methods The right lower limb of a 24-year-old healthy man was taken as the object.The outer contour was obtained with a 3D scanner,and the inner diameters,wall thicknesses and resting blood flow velocities of the great saphenous vein,small saphenous vein and posterior tibial vein were measured with color Doppler ultrasonography.A 3D solid model of the lower limb was built with SolidWorks,and a bidirectional fluid-structure interaction model of the venaflow acting on the lower limb was constructed with Ansys Workbench.Results The velocity distributions of venous flow in the lower limb in the pressure and depressure modes of the venaflow were obtained.Conclusion Through the analysis with the bidirectional fluid-structure interaction model of the venaflow acting on the lower limb,the pressure and depressure modes of the venaflow are optimized,which can enhance the therapeutic efficacy and improve the safety.