Research Article
A Novel Control Method for Rotary Blood Pumps as Left Ventricular Assist Device Utilizing Aortic Valve State Detection
Figure 5
An example of control method performance with Sputnik 1 during heart rate changes: control method tries to maintain approximated pump flow near 4 L/min along with maintaining the partial support state which leads to a periodic pump speed decrease in accordance with the IAV index; —aortic valve flow (L/s), —index, —total flow (L/min), —approximated pump flow (L/min), —desired pump flow (L/min), —pump speed HR—heart rate (bpm).