抄録
A monopivot magnetic suspension blood pump is a centrifugal blood pump in which an impeller is supported with a single pivot and a magnetic bearing. The pump impellers of the monopivot pumps were designed to have three configurations of washout holes for blood recirculation, and four female pivot shapes to reduce blood stagnation and to enhance the antithrombogenicity. The hemolytic properties of monopivot pumps were not changed when the impeller design was not changed, but were changed when the female pivot shape was changed. This indicates that hemolysis in monopivot pumps is mainly caused by shear stress between the male and female pivots.
