Patent ID: 8266943

Claim:
A flow rate estimation device for estimating a flow rate of an objective blood pump which is implanted inside a body of a patient based on (i) a rotational speed of a motor of the objective blood pump, (ii) a consumption current of the motor and (iii) attribute data of blood of the patient, the flow rate estimation device comprising: an attribute data input part for inputting attribute data of a test liquid or blood of the patient, a general flow rate estimation information storing part for storing general flow rate estimation information which includes a correction term and which is formed based on (a) rotational speeds of motors of a plurality of blood pumps, (b) consumption currents of the motors, (c) attribute data of a test liquid, and (d) flow rates of the plurality of blood pumps, a flow rate estimation information forming part for forming flow rate estimation information on the objective blood pump by substituting into the correction term measured data on (1) the rotational speed of the motor of the objective blood pump, (2) the consumption current of the motor of the objective blood pump, (3) the attribute data of the blood of the patient or the test liquid and (4) the flow rate of the objective blood pump, a flow rate estimation information storing part for storing the flow rate estimation information formed by the flow rate estimation information forming part, and a flow rate estimation part for estimating the flow rate of the objective blood pump based on the flow rate estimation information stored in the flow rate estimation information storing part using (i) the rotational speed of the motor of the objective blood pump, (ii) the consumption current of the motor of the objective blood pump and (iii) the attribute data of the blood of the patient, wherein the flow rate estimation information forming part is configured for forming the flow rate estimation information on the objective blood pump from the general flow rate estimation information by adding correction corresponding to an offset quantity measured by using the objective blood pump.