抄録
Roller tube pump, a type of positive displacement pump, is used for the blood purification treatments as a blood pump. Their structure is very simple. A rotor with some rollers rotates along blood tube. Blood is sucked in tube by restoring force of squeezed tube and pushed out by extrusion force of roller. The advantage of the roller pump is that it is excellent in terms of operability, safety, economic effectiveness and reliability. That is why roller pump is suit for blood pump in blood purification in the proper use
