DEVELOPMENT OF THE POWER SUPPLY AND CONTROL SYSTEM FOR THE HEMODIALYSIS MACHINE

Volodymyr Yaskiv

yaskiv@yahoo.com
Ternopil Ivan Puluj National Technical University (Ukraine)
https://orcid.org/0000-0003-0043-3909

Anna Yaskiv


Ternopil Ivan Puluj National Technical University (Ukraine)
https://orcid.org/0000-0003-3101-7107

Abstract

The article describes new approaches to creating an autonomous compact system with automatic control for hemodialysis. It is proposed to organize a closed circuit for cleaning the dialysis solution using an electrolytic regenerator as a function of the concentration of urea in it. The functional diagram of the created system is presented and described. To power the regenerator, ensure thermal stabilization of the solution, and power auxiliary electronic and electrical equipment, a multi-channel power supply and control system for the hemodialysis machine based on high-frequency magnetic amplifiers has been developed and researched. The advantages of power switches based on high-frequency magnetic amplifiers in comparison with transistor switches, including in the construction of controlled power sources, are given. The principle of operation of the voltage regulator on high-frequency magnetic amplifiers is described. Theoretical and experimental oscillograms are given. Photographs of the experimental unit as well as an industrial sample of the multi-channel power supply and control system of the hemodialysis machine are provided. Their main technical characteristics are given. Conclusions to the conducted work are formulated. Carrying out the regeneration of the dialysis solution significantly reduces its costs – 2 liters of solution, which is suitable for use for 6 months, is enough for the operation of the device. Existing hemodialysis machines are a stationary open system using a single-use dialysis solution at a rate of up to 35 l/h, which ties the machine to stationary clinical conditions. Introducing feedback on the concentration of urea in the dialysis solution allows you to automate the blood purification procedure, as well as automatically complete hemodialysis at the necessary time, and also eliminates the dependence of the device on the conditions of the hospital.


Keywords:

hemodialysis, power supply and control system, rectangular hysteresis loop, high-frequency magnetic amplifier

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Published
2023-09-30

Cited by

Yaskiv, V., & Yaskiv, A. (2023). DEVELOPMENT OF THE POWER SUPPLY AND CONTROL SYSTEM FOR THE HEMODIALYSIS MACHINE. Informatyka, Automatyka, Pomiary W Gospodarce I Ochronie Środowiska, 13(3), 23–28. https://doi.org/10.35784/iapgos.3745

Authors

Volodymyr Yaskiv 
yaskiv@yahoo.com
Ternopil Ivan Puluj National Technical University Ukraine
https://orcid.org/0000-0003-0043-3909

Authors

Anna Yaskiv 

Ternopil Ivan Puluj National Technical University Ukraine
https://orcid.org/0000-0003-3101-7107

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