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Use of Two Intracorporeal Ventricular Assist Devices As a Total Artificial Heart
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Interbeat control of a ventricular assist device for variable pump performance.

Akira Tanaka, Aoi Moriya, Makoto Yoshizawa

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |October 11, 2013
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    Summary

    This study introduces a novel control method for rotary blood pumps, enabling variable pump performance for improved blood flow regulation. Computer simulations demonstrate its effectiveness in adjusting pump characteristics for long-term circulatory support.

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    Area of Science:

    • Biomedical Engineering
    • Cardiovascular Devices
    • Control Systems

    Background:

    • Pump performance is critical for effective long-term circulatory support using rotary blood pumps.
    • Achieving specific and optimal pump performance remains a significant challenge in blood pump development.

    Purpose of the Study:

    • To propose and validate a control method for implementing variable pump performance within a single rotary blood pump.
    • To assess the controller's ability to dynamically adjust the pressure head-flow rate relationship.

    Main Methods:

    • A novel controller was developed to manage the dynamic relationship between pump pressure head and flow rate.
    • Interbeat control and a repetitive control method were employed to manage cyclic errors and optimize performance.
    • Computer simulations were utilized to evaluate the proposed control strategy's validity.

    Main Results:

    • The proposed controller demonstrated the capability to regulate the dynamic relationship between pressure head and pump flow.
    • Simulation results suggest the controller can mimic the performance characteristics of various centrifugal pump types.
    • The method shows potential for precise blood flow regulation in long-term circulatory support.

    Conclusions:

    • The developed control method offers a viable solution for achieving variable pump performance in rotary blood pumps.
    • This approach facilitates tailored blood flow regulation, crucial for advanced circulatory support systems.
    • Further research and development can optimize this controller for clinical applications.