An Estimation Method of Hemolysis within an Axial Flow Blood Pump by Computational Fluid Dynamics Analysis


  • Presented in part at the 10th Congress of the International Society for Rotary Blood Pumps, held September 11–14, 2002 in Osaka, Japan.

Tetsuya Yano, Department of Biomedical Systems Engineering, Graduate School of Engineering, Hokkaido University Kita-13, Nishi-8, Kitaku, Sapporo 080-8628, Japan. E-mail:


Abstract: Evaluation of hemolysis within a blood pump on a computer is useful for developing rotary blood pumps. The flow fields in the axial flow blood pump were analyzed using computational fluid dynamics (CFD). A blood damage index was calculated based on the changes in shear stress with time along 937 streamlines. Hemolysis of the pumps was measured using bovine blood. A good correlation between the computed and measured hemolysis results was observed. CFD analysis is useful for estimating hemolysis of rotary blood pumps on a computer.