Patent ID: 11883642
Assignee: RELIANTHEART, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 17:
18. A method of operating a blood pump system, wherein the system comprises an implanted motorized blood pump, an implanted blood flow sensor, a power source, and a controller, the method comprising:
periodically energizing and de-energizing the implanted blood flow sensor;
determining a flow rate of blood through the blood pump from data from the implanted blood flow sensor while it was energized;
deriving a value of power consumed by a blood pump motor as a function of speed of the blood pump and the determined flow rate of blood through the blood pump such that the derived power value corresponds in time to the determined flow rate;
determining an actual value of power consumed by the blood pump motor from blood pump motor voltage and blood pump motor current such that the actual power consumed value corresponds in time to the determined flow rate;
determining a difference between the derived power consumed value and the actual power consumed value;
adjusting a duty cycle of the implanted blood flow sensor based on the difference.