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Related Experiment Videos

Tunable and Lightweight On-Chip Event Detection for Implantable Bladder Pressure Monitoring Devices.

Robert Karam, Steve J A Majerus, Dennis J Bourbeau

    IEEE Transactions on Biomedical Circuits and Systems
    |October 14, 2017
    PubMed
    Summary

    This study presents a low-power algorithm for implantable bladder pressure monitors. It efficiently detects bladder events and compresses data, significantly reducing energy consumption for long-term monitoring and treatment.

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    Area of Science:

    • Biomedical Engineering
    • Urology
    • Electrical Engineering

    Background:

    • Lower urinary tract dysfunctions impact millions globally, often requiring urodynamics studies for diagnosis.
    • Implantable bladder pressure monitors offer chronic monitoring but face power consumption challenges, primarily from data transmission.

    Purpose of the Study:

    • To develop a low-power, on-chip algorithm and circuit for bladder pressure data compression and event detection in implantable devices.
    • To create a tunable framework for selective data transmission, enhancing energy efficiency for long-term bladder monitoring.

    Main Methods:

    • An algorithm and circuit-level implementation for on-chip bladder pressure data compression and event detection were developed.
    • The design utilizes resource reuse and advanced VLSI techniques for power reduction, achieving a total area of 1.75 mm².

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  • The system allows for tunable transmission of compressed data, bladder event snapshots, or event occurrence indicators.

    • Main Results:

    • The designed system achieves ultra-low power consumption: approximately 2.6 nW with compression and event detection enabled.
    • With only event detection, power consumption is further reduced to 2.1 nW.
    • The framework is lightweight, tunable, and suitable for long-life implantable bladder pressure monitoring.

    Conclusions:

    • The developed on-chip compression and event detection significantly minimizes power consumption in implantable bladder pressure monitors.
    • This approach is ideal for creating long-lasting devices for diagnosing and potentially treating lower urinary tract dysfunctions.
    • The tunable nature of the system allows for flexible data management based on energy efficiency requirements.