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Related Experiment Videos

Screen-printed transcutaneous oxygen sensor employing polymer electrolytes.

Y Z Lam1, J K Atkinson

  • 1Thick Film Unit, School of Engineering Sciences, University of Southampton, Southampton, UK. lizalam@mech.soton.ac.uk

Medical & Biological Engineering & Computing
|August 2, 2003
PubMed
Summary

This study presents a novel, disposable transcutaneous oxygen sensor fabricated using screen-printing technology. The device accurately estimates arterial blood oxygen levels, offering a low-cost solution for medical monitoring.

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Area of Science:

  • Biomedical Engineering
  • Sensor Technology
  • Materials Science

Background:

  • Transcutaneous oxygen monitoring is crucial for assessing arterial blood gas concentration.
  • Existing methods can be invasive or lack reliability.
  • Development of cost-effective, non-invasive sensors is needed.

Purpose of the Study:

  • To design and fabricate a disposable transcutaneous oxygen sensor using screen-printing technology.
  • To evaluate the performance of different materials for electrolyte and membrane.
  • To establish a reliable method for estimating arterial blood oxygen levels.

Main Methods:

  • Screen-printing fabrication of a Clark cell with gold electrodes and Ag/AgCl reference.
  • Integration of a heating element to enhance transcutaneous diffusion.

Related Experiment Videos

  • Automated gas testing rig for controlled oxygen level variation.
  • Cyclic voltammetry and static analysis for sensor characterization.

    • Main Results:

    • Achieved an average sensitivity of 0.02 microA(mmHg)(-1) with high regression coefficients (0.99).
    • The prototype with a polytetrafluoroethylene membrane showed a linear response: I (microA) = -0.025PO2 (mmHg) - 0.085.
    • Identified key factors influencing sensor performance.

    Conclusions:

    • Screen-printing technology is suitable for fabricating low-cost, disposable transcutaneous oxygen sensors.
    • The developed sensor provides a viable option for reliable arterial blood gas estimation.
    • Further material investigation can optimize sensor performance.