Clinical study of totally roller pumpless cardiopulmonary bypass system.

We have developed a low negative pressure vacuum suction system in which cardiotomy suction is performed by the negative pressure of the venous reservoir controlled by a vacuum controller. We have employed this vacuum suction system with a centrifugal pump as a totally roller pumpless cardiopulmonary bypass (CPB) system. In this study, the clinical availability and hemocompatibility of our totally roller pumpless CPB system were evaluated by a randomized prospective study.