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A microcomputer-based data acquisition system for a prosthetic heart valve test apparatus.

I MacDonald, J Fisher, A L Evans

    Journal of Medical Engineering & Technology
    |November 1, 1986
    PubMed
    Summary
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    This study details a new computerized system for hydrodynamic testing of prosthetic heart valves. The system automates data acquisition and analysis, essential for standardized valve function assessment.

    Area of Science:

    • Biomedical Engineering
    • Cardiovascular Research
    • Prosthetic Devices

    Background:

    • Laboratory hydrodynamic testing under pulsatile flow is crucial for prosthetic heart valve function assessment.
    • Sophisticated test procedures and detailed signal analysis are currently employed.
    • Standardized documentation and complex analysis necessitate automation.

    Purpose of the Study:

    • To develop a computerized data acquisition system for the Glasgow pulsatile flow test apparatus.
    • To automate the calculation of standard hemodynamic parameters for prosthetic heart valves.

    Main Methods:

    • A computerized data acquisition system was developed for the Glasgow pulsatile flow test apparatus.
    • The system collects seven signals from the test rig over 20 seconds.

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  • Average waveforms are calculated, and standard parameters (mean pressure differences, flows, regurgitant volumes, energy losses) are automatically computed.

    • Main Results:

    • The computerized system successfully collects and analyzes multiple signals from prosthetic heart valve tests.
    • Standard hemodynamic parameters are calculated automatically, streamlining the assessment process.
    • The system has been utilized for function tests on over 160 prosthetic heart valves.

    Conclusions:

    • Computerization is essential for the complex analysis and standardized documentation of prosthetic heart valve hydrodynamic testing.
    • The developed system provides a reliable and efficient method for evaluating prosthetic heart valve performance.
    • This automated approach enhances the accuracy and reproducibility of valve function testing.