Prototype and Graphical Interface for Selective Exhaled Air Acquisition

Valentina Vassilenko, Fábio Dias, José Alves, Fabio Januario, José Luís Ferreira

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The recent advances in technology and detection methods, as well as its economic viability have pointed the analysis of exhaled breath as a promising tool for medical diagnosis or therapy monitoring. Since the concentration of the most Volatile Organic Compounds (VOCs) present in the exhaled breath is very low (ppbv – pptv range) it is important to have a selective sampling system for alveolar air. In this work we present the design and instrumentation of a prototype that allows real time monitoring of the breathing cycle and automatically decide the correct moment for acquisition and channel the acquired sample to the Ion Mobility Spectrometer with Multi-Capillary Column pre-separation (MCC-IMS). The prototype is composed by a flow meter, signal packaging circuits and a flow commuting circuit (three-way valve). Two graphical interfaces were also developed to help controlling the whole process of acquisition making it easy, quick and reliable.
Original languageEnglish
Title of host publicationBIODEVICES 2013 - International Conference on Biomedical Electronics and Devices
Pages216-219
DOIs
Publication statusPublished - 1 Jan 2013
EventBiostec - International Joint Conference on Biomedical Engineering Systems and Technologies -
Duration: 1 Jan 2013 → …

Conference

ConferenceBiostec - International Joint Conference on Biomedical Engineering Systems and Technologies
Period1/01/13 → …

Keywords

  • Exhaled Air
  • Select ive Air Acquisition
  • Capnography
  • Ion Mobility Spectrometry

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