Sistema para avaliação de funcionalidade de ventiladores pulmonares integrado a banco de dados

Abstract

This work presents a prototype based on a microcomputer to assess the performance of lung ventilators according to the NBR 13763 and NBR IEC 60601-2-12. A microcontrolled electronic unit was developed to acquire samples from two differential pressure transducers (related to flow velocity and airway pressure) and from a temperature/ humidity sensor. The sampled data is sent to a PC via Bluetooth. Software running on the PC presents the pressure, flow velocity and volume waveforms on the PC screen in real time. It also calculates ventilatory parameters and guides the operator during the ventilator assessment. Data on the lung ventilator (model, manufacturer and others), the sampled waveforms and the calculated parameters are stored into a database. The calibration procedure of the sensors and the tests carried out in a lung ventilator with the developed system are presented. © Springer-Verlag Berlin Heidelberg 2007.