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Related Experiment Videos

Electronic flow rate controller for a portable insulin infusion pump

R T Ferguson, B Zinman, E B Marliss

    Diabetes Care
    |March 1, 1980
    PubMed
    Summary

    This study introduces an electronic controller for precise infusate delivery, offering programmable basal and meal-associated pulse rates. The device enhances efficiency and reliability for long-term use with small batteries.

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    Area of Science:

    • Biomedical Engineering
    • Medical Devices
    • Control Systems

    Background:

    • Accurate and efficient control of infusate delivery is crucial in medical applications.
    • Existing systems may have limitations in power consumption and programmability.

    Purpose of the Study:

    • To describe a novel electronic controller for regulating infusate flow.
    • To evaluate the controller's performance, reliability, and power efficiency.

    Main Methods:

    • The controller utilizes an on-off mode to digitally regulate pump energization, controlling average flow rate.
    • Integral programming allows selection of 256 basal rates and 255 meal pulse rates with adjustable durations.
    • Low power consumption enables operation for 36 hours on a 3.0 V battery.

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    Main Results:

    • The controller demonstrated reliability and precision in laboratory and clinical settings over one year with 20 units.
    • Programmable basal rates range from 0 to 49.6% of maximum, with meal pulses up to 99.7% of maximum rate.
    • Significant power reduction was achieved, allowing extended operation with small rechargeable batteries.

    Conclusions:

    • The developed electronic controller offers a reliable, precise, and power-efficient solution for infusate delivery.
    • Experience gained provides valuable data for future improvements in biomedical infusion systems.