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Automatic control systems for the artificial heart and ventricular assist device.

I A Guskov, A B Zatiuriukin, E P Kuznetsov

    Artificial Organs
    |February 1, 1987
    PubMed
    Summary

    New automatic control systems for artificial hearts (AH) and ventricular assist devices ensure effective blood circulation. These systems utilize pressure feedback and noninvasive hemodynamic monitoring for optimal performance in dynamic circulatory conditions.

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    Area of Science:

    • Biomedical Engineering
    • Control Systems Engineering
    • Cardiovascular Physiology

    Background:

    • Artificial heart (AH) and ventricular assist device (VAD) technologies require sophisticated control systems.
    • Maintaining stable hemodynamics is crucial for artificial circulatory support.
    • Existing control systems may lack adaptability to dynamic physiological conditions.

    Purpose of the Study:

    • To develop and evaluate automatic control systems for artificial hearts and ventricular assist devices.
    • To implement a control system based on effectiveness criteria, mathematical modeling, and noninvasive hemodynamic parameters.
    • To ensure effective blood circulation during both resting and transient states.

    Main Methods:

    • Development of the Sinus IS2 system, featuring a high-speed servomechanism for pneumatic pulse generation.

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  • Implementation of automatic regulation with pressure feedback, using mean aortic pressure as the primary regulated parameter.
  • Testing using a physical model and a physiological experiment simulating left ventricular contractile insufficiency.

    • Main Results:

    • The developed automatic control systems demonstrated effective regulation of hemodynamic parameters.
    • The Sinus IS2 system successfully controlled the artificial heart, generating pneumatic pulses.
    • Normal blood circulation was maintained in both resting and dynamic transient states during testing.

    Conclusions:

    • Automatic control systems are effective for artificial hearts and ventricular assist devices.
    • The Sinus IS2 system provides reliable circulatory assistance.
    • Noninvasive hemodynamic monitoring and pressure feedback are key to effective artificial circulatory support.