Development of the Unit for Measuring the Hydrodynamic Parameters of AHV

The article describes the development process of a unit for measuring the hydrodynamic parameters of an artificial ventricle of the heart (AHV).The data of the World Health Organization are given, based on which we can talk about the leading place of diseases of the cardiovascular system in total mortality. These pathologists account for about 50% of all deaths in Russia. If the patient has a terminal form of cardiac distress (TCD), transplantation of a donor heart is considered the “gold standard”. However, there is a serious shortage of donor organs. The average waiting time for heart transplantation exceeds two years, which is why in the last decades, methods of mechanical support of blood circulation (MBCS) have been developed for the treatment of patients with the terminal form of cardiac distress. The methods described in this article are the basis for the development of a unit for measuring volume, which is part of the biotechnological system of adaptive control of artificial ventricles of the heart. To maximize the approach of the system to a real heart, it is necessary to implement the Frank-Starling mechanism, i.e. regulation of stroke emission depending on the end-diastolic volume of AHV. To select the optimal method, an experimental comparison was made of three different methods for measuring the hydrodynamic parameters of an artificial ventricle, namely, optical, electromagnetic, and electrical impedance. The methods of the experiments are given, as well as the main characteristics of the used technical means.