Patent ID: 9717839
Date: 2017-08-01
CPC Classifications: A61M,H02P

Claim:
1. An extracorporeal circulator driven by a rotation drive unit to circulate blood of a patient outside a body, the extracorporeal circulator comprising: a control unit coupled to the rotation drive unit to control an actual rotation speed of the rotation drive unit; a manipulation section coupled to the control unit to manually adjust a speed setting request provided to the control unit, wherein the control unit controls the rotation speed of the rotation drive unit subject to a lower limit rotation speed setting value; and a rotation speed display section that displays the lower limit rotation setting value of the rotation drive unit in accordance with a command of the control unit, wherein the lower limit rotation speed setting value is a minimum rotation speed for preventing backflow of the blood inside the circulator so as to operate the rotation drive unit and to cause the blood to return to an inside of the body of the patient, and wherein after a rotation speed of the rotation drive unit is raised above the lower limit rotation speed setting value, the control unit causes the display section to display a confirmation message in response to a manually adjusted speed setting request at or below the lower limit rotation speed setting value.