PHYSICS OF HYDRODYNAMICS AND CAVITATION IN IMPELLER TYPE OF LEFT VENTRICLE ASSIST DEVICE
DOI:
https://doi.org/10.31379/2411.2616.14.2.1Keywords:
LVAD, impeller, blade rotor, cavitation productivity, flow hydrodynamicAbstract
Thanks to modern systems of mechanical support of blood circulation in many patients with severe forms of heart failure of various types, it became possible to safely and comfortably wait for the possibility of a heart transplant. The features of this equipment, which is physically a galvanic magnetic inductive pump, is the impeller-type internal levitating rotor component, which is characterized by a vaneblade hydrodynamic part, which has cavitation characteristics. An analysis of the cavitation consequences of the operation of these types of intracardiac pumps was carried out on the basis of existing practical world examples, theoretically studied, and the characteristics of comparing the results obtained were described. The attention is given to the mechanisms of physical and mathematical calculation of cavitation productivity and hydrodynamic characteristics of these types of pumps at different operating modes, which affects the possibility of clinical complications in patients using them.
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