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Venous occlusion plethysmography using a fiber-optic sensor

E N Stenow1, P A Oberg

  • 1Department of Biomedical Engineering, Linköping University, Sweden.

IEEE Transactions on Bio-Medical Engineering
|March 1, 1993
PubMed
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A novel fiber-optic sensor offers a mercury-free alternative for measuring limb blood flow using venous occlusion plethysmography. This advanced sensor overcomes the limitations of traditional mercury strain-gauge devices.

Area of Science:

  • Biomedical Engineering
  • Medical Devices
  • Sensor Technology

Background:

  • Venous occlusion plethysmography is a standard clinical method for assessing limb blood flow.
  • Mercury strain-gauge sensors, traditionally used, suffer from temperature drift and long-term instability.
  • Environmental regulations are phasing out mercury-based sensors.

Purpose of the Study:

  • To evaluate a fiber-optic microbending sensor as a replacement for mercury strain-gauge sensors.
  • To optimize the performance of the fiber-optic sensor for clinical application.
  • To compare the accuracy and reliability of the fiber-optic sensor against the mercury strain-gauge.

Main Methods:

  • Comparative testing of fiber-optic and mercury strain-gauge sensors.

Related Experiment Videos

  • Measurement of limb volume changes during venous occlusion.
  • Detailed evaluation and optimization of the fiber-optic microbending sensor.

    • Main Results:

    • The fiber-optic sensor demonstrates potential as a viable alternative to mercury strain-gauge sensors.
    • Performance characteristics of the fiber-optic sensor were evaluated and optimized.
    • Direct comparison in lower limb blood flow measurements was conducted.

    Conclusions:

    • Fiber-optic sensors present a promising, mercury-free solution for venous occlusion plethysmography.
    • The developed fiber-optic sensor addresses the limitations of mercury-based devices.
    • This technology supports the transition away from hazardous mercury sensors in clinical settings.