CIRCULATION APPARATUS AND METHOD FOR CONTROLLING SAME

摘要

A highly reliable circulation apparatus promptly detects an abnormal state of a status value related to blood flowing in a circulation circuit with no particular operation performed. As an extracorporeal circulation mode starts, a user operates a pump first and waits until a flow rate is stabilized. Then, when the flow rate is stabilized, a predetermined value is added to or subtracted from the stabilized flow rate so as to set two threshold values which regulate an upper end and a lower end of a permissible state range. Then, it is monitored whether or not the flow rate is within the permissible state range regulated by the threshold values, and when the flow rate deviates from the permissible state range, an alarm is issued for notification.

主权项

1. A circulation apparatus which causes blood of a patient to circulate outside a human body by using a circulation circuit, the apparatus comprising:
a detector for detecting a status value related to blood while being provided on a flow path through which blood flows in the circulation circuit; and a processor configured to: determine whether or not a stable state in which the status value exhibits transition within a range set in advance is achieved after the circulation circuit starts blood circulation; set two threshold values which respectively regulate an upper end and a lower end of a permissible state range based on the status value in the stable state when it is determined that the stable state is achieved; monitor whether or not the status value is within the permissible state range which is regulated by the two threshold values, after the stable state is achieved; and issue an alarm when deviation of the status value from the permissible state range is detected.