Authors:
Daniel Marinho Silva
1
;
Maurício Campelo Tavares
2
and
Raimes Moraes
3
Affiliations:
1
Biomedical Engineering Institute, Federal University of Santa Catarina, Brazil
;
2
Biomedical Engineering Laboratory, Catholic University of Pelotas, Brazil
;
3
Electrical Engineering Department, Federal University of Santa Catarina, Brazil
Keyword(s):
IEC 60601-2-12, NBR 13763, Bluetooth, Clinical engineering, Maintenance.
Related
Ontology
Subjects/Areas/Topics:
Biomedical Engineering
;
Biomedical Equipment
;
Biomedical Instrumentation
;
Biomedical Instruments and Devices
;
Technologies Evaluation
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 calcula
tes 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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