MICROCOMPUTERIZED SYSTEM TO ASSESS THE PERFORMANCE OF LUNG VENTILATORS

Daniel Marinho Silva, Maurício Campelo Tavares, Raimes Moraes

2009

Abstract

Lung ventilators may harm patients if they are not properly calibrated. Therefore, they must be periodically assessed to verify if the supplied volume and pressure match the ventilatory settings. This paper presents a system based on a microcomputer to assess the performance of lung ventilators. The hardware of the developed system contains three modules: transducer, conditioning and acquisition. The transducer module converts, to electrical signals, the pressure and flow waveforms supplied to a lung simulator by a lung ventilator. It also supplies digital measurements of temperature and relative humidity (RH). The conditioning module amplifies and filters the pressure and flow signals. The acquisition module reads the digital measurements (temperature and RH) and carries out the analog to digital conversion of the conditioning module outputs, sending these data to the microcomputer via radio-frequency. Software written in C++ shows the acquired waveforms on the PC screen and calculates the parameters required by the IEC 60601-2-12. Data on the lung ventilator model, the sampled waveforms and the calculated parameters are stored in a database, allowing the equipment follow-up. Comparative result of tests carried out with the developed system and with commercial equipment is presented.

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Paper Citation


in Harvard Style

Marinho Silva D., Campelo Tavares M. and Moraes R. (2009). MICROCOMPUTERIZED SYSTEM TO ASSESS THE PERFORMANCE OF LUNG VENTILATORS . In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2009) ISBN 978-989-8111- 64-7, pages 161-166. DOI: 10.5220/0001432101610166


in Bibtex Style

@conference{biodevices09,
author={Daniel Marinho Silva and Maurício Campelo Tavares and Raimes Moraes},
title={MICROCOMPUTERIZED SYSTEM TO ASSESS THE PERFORMANCE OF LUNG VENTILATORS},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2009)},
year={2009},
pages={161-166},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001432101610166},
isbn={978-989-8111- 64-7},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2009)
TI - MICROCOMPUTERIZED SYSTEM TO ASSESS THE PERFORMANCE OF LUNG VENTILATORS
SN - 978-989-8111- 64-7
AU - Marinho Silva D.
AU - Campelo Tavares M.
AU - Moraes R.
PY - 2009
SP - 161
EP - 166
DO - 10.5220/0001432101610166