Research of artificial heart ventricle based on the principle of travelling waves driven by piezoelectric actuation

The present article deals with the piezoelectrically-induced travelling wave that arises in periodically loaded tube and it drives blood through tube intended for application as an artificial heart ventricle. However, frequencies of piezoelectrically actuated running waves lie in ultrasonic frequency band and such big frequencies cannot be used for the blood transfer in an artificial heart. Using finite element method the forms of oscillations in the tube of the artificial heart ventricle, natural frequencies and the characteristics of blood flow through the tube (rate of flow-through, flow and pressure) were calculated. Blood pressure and flow dependencies on different tube characteristics such as tube diameter, wall thickness and frequency and magnitude of systolic driving force were studied. The calculation method allows estimating rational parameters of the artificial heart ventricle.