DocumentCode :
791436
Title :
Studies on the Temperature Distribution of a Thick Film Transcutaneous Oxygen Sensor and Its Thermal Influences on Oxygen Measurement
Author :
Lam, L. ; Bilek, J. ; Atkinson, J.
Author_Institution :
Southampton Univ.
Volume :
53
Issue :
11
fYear :
2006
Firstpage :
2341
Lastpage :
2346
Abstract :
The partial pressures of gases, namely oxygen and carbon dioxide, in the arterial blood are important parameters for doctors to determine the respiratory conditions of patients. Currently in practice, there are a number of ways to measure these parameters, one of which is transcutaneous blood gas monitoring. This technique is a popular noninvasive measurement method for obtaining fast and relatively accurate responses. In this investigation, thick film technology has been employed to develop an amperometric oxygen sensor which consists of a heating module to elevate the temperature at the skin surface to transcutaneous levels. The heating module includes a heating element and its temperature is regulated by a temperature control circuit. Using an infrared camera, the transient and steady-state temperature distributions as well as the stability of the heating element have been analysed. The influence of temperature on the oxygen sensing module is also studied. In addition, a three-dimensional theoretical model is established to evaluate the thermal response of the sensor and subsequently compared with the results from the practical prototype. With this model, the design stages can be simplified and future heating modules for transcutaneous sensors could be generated and improved more easily and effectively
Keywords :
amperometric sensors; biothermics; blood; blood vessels; gas sensors; oxygen; patient monitoring; skin; thick film devices; O2; amperometric oxygen sensor; arterial blood; heating module; infrared camera; partial pressures; respiratory conditions; skin; temperature control circuit; temperature distribution; thermal influences; thick film transcutaneous oxygen sensor; transcutaneous blood gas monitoring; Blood; Gases; Infrared heating; Oxygen; Temperature distribution; Temperature sensors; Thermal sensors; Thick film sensors; Thick films; Thickness measurement; Oxygen sensor; temperature distribution; thick film; transcutaneous; Biosensing Techniques; Computer Simulation; Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Membranes, Artificial; Models, Biological; Oximetry; Oxygen; Skin; Skin Temperature; Temperature; Transducers;
fLanguage :
English
Journal_Title :
Biomedical Engineering, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9294
Type :
jour
DOI :
10.1109/TBME.2006.879466
Filename :
1710176
Link To Document :
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