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Related Experiment Videos

Telemetered epidural pressure.

D A de JONG, A H Ouden, T A van de Boon

    Biotelemetry
    |January 1, 1975
    PubMed
    Summary
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    This study presents an implantable brain pressure transducer for long-term monitoring. The device uses a coil-capacitor circuit and demonstrates accuracy and reliability in initial tests.

    Area of Science:

    • Biomedical Engineering
    • Neuroscience
    • Medical Devices

    Background:

    • Accurate monitoring of epidural brain pressure is crucial for diagnosing and managing various neurological conditions.
    • Existing methods for continuous intracranial pressure monitoring can be invasive and have limitations in long-term application.

    Purpose of the Study:

    • To develop and evaluate an implantable transducer for long-term telemetering of epidural brain pressure.
    • To assess the accuracy, reliability, and feasibility of the novel transducer in both in vitro and in vivo settings.

    Main Methods:

    • Construction of an implantable transducer using conventional materials and workshop techniques.
    • Application of the coplanarity principle and a specialized mounting clamp for precise transducer positioning.

    Related Experiment Videos

  • Utilizing a coil-capacitor circuit where pressure changes alter resonance frequency, measured by an external impedance device.

    • Main Results:

    • The transducer demonstrated good accuracy and reliability over a period exceeding 1 month in in vitro testing.
    • An in vivo experiment in a cat showed a linear relationship between measured epidural pressure and ventricular fluid pressure.

    Conclusions:

    • The developed implantable transducer offers a promising solution for long-term, non-invasive epidural brain pressure monitoring.
    • The device's construction and measurement principle suggest potential for clinical application in neurosurgery and critical care.