An experimental platform that can be used for non-invasive ventilation leak detection

Abstract

The invention belongs to an experimental platform (1) for noninvasive ventilation leak detection and particularly relates to a device which achieves leak real-time detection due to synchronous monitoring and processing of pressure and flow at different points of a breathing route during the noninvasive ventilation process. A system of the experimental platform for the noninvasive ventilation leakage detection comprises a breathing machine control system which can achieve breathing machine functions, a leak detection module (02) which comprises a plurality of flow sensors, pressure sensors and a data acquisition card, a LabVIEW based micro processing and display unit (03), a face mask and a fixing device (04) thereof, a simulation trachea (05) and a lung model (06). According to the experimental platform for the noninvasive ventilation leak detection, synchronous monitoring and processing of multi-channel flow and pressure signals are achieved due to driving and filter circuits of the flow sensors and pressure sensors and a data acquisition and processing algorithm and three selectable leak real-time detection methods which comprise a leak branch circuit based flow detection method, a breathing branch circuit based flow difference value detection method and a face mask front-rear end flow difference value detection method are achieved through connection of three different breathing structures.

Description

technical field [0001] The invention belongs to an experimental platform that can be used for non-invasive ventilation leak detection, and specifically relates to the synchronous monitoring and processing of the pressure and flow at different points in the gas path during the non-invasive ventilation process, and realizes three optional leaks through the connection of three different gas path structures. Gas real-time detection method. Background technique [0002] Non-invasive ventilation is a mechanical ventilation method that does not require artificial airways such as tracheal intubation and airway incision. It is an effective auxiliary ventilation method for treating patients with respiratory failure. Because it has the advantages of reducing secondary lung injury, reducing ventilation mortality, high comfort, simple and flexible operation, etc., it has been widely used in clinics and homes. However, air leakage is an inevitable problem of non-invasive ventilation, inc...

AI Technical Summary

Problems solved by technology

However, air leakage is an inevitable problem of non-invasive ventilation, including intentional air leakage during single-circuit ventilation, and unintentional air leakage caused by factors such as air leakage through the mouth when using a nasal mask, and loose contact between the mask and the patient's face.

Air leakage will make patients feel uncomfortable, reduce ventilation tolerance, affect the inhaled oxygen concentration, affect the triggering and switching functions of the ventilator, reduce the synchronization performance of the man-machine, adversely affect the ventilation effect, and even cause life-threatening, so the air leakage problem Can not be ignored

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