Some in vitro tests of hemolysis using the experimental circuit were carried out in order to determine the hemolysis factors. It was investigated that occlusion of roller pump and hematcrit affected the hemolysis, and prevention of blood turbulent flow was useful in decreasing the hemolysis. Further, hemolysis model and rate equation were deviced, and by which above data were correlated. This hemolysis model and rate equation were found to be able to expain the hemolysis mechanism.
