Patent ID: 8900173

Claim:
A blood purification apparatus comprising: a blood purifier for performing blood purification; an arterial blood circuit has a proximal end connected to the blood purifier and a blood pump disposed in the arterial blood circuit; a venous blood circuit has a proximal end connected to the blood purifier; a dialysate introduction line introduces a dialysate into the blood purifier; a dialysate discharge line discharges the dialysate from the blood purifier; a dialysate infusing line has one end connected to a collection port formed in a predetermined part of the dialysate introduction line, and another end is connected to the arterial blood circuit or the venous blood circuit; a dialysate infusing pump disposed in the dialysate infusing line, the dialysate infusing pump supplies the dialysate of the dialysate introduction line to the arterial blood circuit or the venous blood circuit; a mechanism for forming a closed circuit in a flow route of the dialysate introduction line side, the closed circuit including the predetermined part formed with the collection port; and a determination device confirming the connection of the dialysate infusing line to the collection port by measuring a fluid pressure in the closed circuit while driving the dialysate infusing pump in a direction that applies a pressure to the closed circuit.