Patent ID: 8043074

Claim:
A blood pump device comprising: a housing having a blood inflow port and a blood outflow port; an impeller rotatably positioned inside the housing to feed blood, the impeller being provided with a magnetic body; an impeller rotating torque generating section attracting the impeller from outside the housing and rotating the impeller; a non-contact type bearing mechanism enabling rotation of the impeller in the housing in a non-contact state relative to an inside surface of the housing; and an impeller fixing member detachably mounted to the housing and preventing the impeller from moving inside the housing; wherein: the blood pump device is a centrifugal type blood pump device; the housing comprises a blood passage extending from the blood inflow port; the impeller comprises a central opening part located on an extension line of the blood passage; the impeller fixing member comprises a detachable mounting section detachably mounted to the blood inflow port, and an impeller fixing section extending from the mounting section, the impeller fixing section being positioned in the blood passage and applying a force to the impeller to hold the impeller or press the impeller against the inside surface of the housing to fix the impeller against movement.