Blood purification device

A blood purification device, comprising:

• a blood circuit for extracorporeally circulating blood of a patient
• a liquid supply circuit for supplying a supply liquid to the blood circuit or to a blood purifier provided on the blood circuit and
• a waste liquid circuit for discharging the waste liquid from the blood purifier,
• wherein each of the blood circuit, the liquid supply circuit and the waste liquid circuit comprises a flexible tube, and the device comprises a tube identification unit that performs a tube identification process for identifying a tube used for the blood circuit, the liquid supply circuit or the waste liquid circuit or determining whether or not there is an abnormality in the tube, based on an amount of liquid sent from a peristaltic pump provided on the blood circuit, the liquid supply circuit or the waste liquid circuit, or pressure fluctuation in the circuit, caused when driving the pump for a predetermined time;
• and
• wherein the tube identification unit determines whether or not there is an abnormality in the tube in use, based on whether or not the amount of liquid sent from the pump or the pressure fluctuation when driving the pump for a predetermined time falls within a preset normal range.

A blood purification device, comprising:

• a blood circuit for extracorporeally circulating blood of a patient
• a liquid supply circuit for supplying a supply liquid to the blood circuit or to a blood purifier provided on the blood circuit and
• a waste liquid circuit for discharging the waste liquid from the blood purifier,
• wherein each of the blood circuit, the liquid supply circuit and the waste liquid circuit comprises a flexible tube, and the device comprises a tube identification unit that performs a tube identification process for identifying a tube used for the blood circuit, the liquid supply circuit or the waste liquid circuit or determining whether or not there is an abnormality in the tube, based on an amount of liquid sent from a peristaltic pump provided on the blood circuit, the liquid supply circuit or the waste liquid circuit, or pressure fluctuation in the circuit, caused when driving the pump for a predetermined time;
• and
• a pump speed correction unit that corrects a pump speed of the pump driven at the time of the measurement, based on a measurement result of the amount of liquid sent from the pump or the pressure fluctuation during the tube identification process.