Search Results for Gas Flow Analyzer

Adaptive Leak-Flow Compensation for Volume Measurement in Gas Flow Analyzers

As described here, manual adjustment of a baseflow might be a cumbersome process. It requires multiple steps which must be repeated every time if the intentional leak or the ventilator settings are changed. To simplify daily work, the FlowAnalyser PRO offers adaptive baseflow adjustment to compensate for leakage automatically. But how does it work? The […]

November 23, 2021

Automatic Breath Detection in Gas Flow Analyzers

From Matthias van der Staay. Correctly selected trigger settings in a ventilator tester are important for the measurement accuracy of breath-based parameters in medical ventilators such as tidal volume, minute volume or breath rate. Depending on the patient circuit configuration and the selected ventilation mode or settings, adjustments to the trigger settings are usually required. […]

November 2, 2021

Verifying Ventilator Operation with Gas Flow Analyzer

All ventilators should be tested after each use to verify performance before the unit is used for another patient. Ideally, a complete operational verification procedure, established by the facility and usually based on the manufacturer’s recommendations, will be performed each time. These procedures should be described in a facility’s policies and procedures. Find more about […]

February 22, 2021

Reliable Breath Detection in Gas Flow Analyzers

A ventilator tester or gas flow analyzer verifies independently settings and monitoring system of a medical ventilator with breath based parameters like inspiration (Pinsp) and expiration (PEEP) pressure, in- and expiratory tidal volumes (Vte, Vti), breath rate (RR) etc. To measure breath based parameters (= Respiratory Parameters) a gas flow analyser has to reliably detect […]

March 2, 2020

What everyone must know about Gas Standards

Various gas standards are used when working with medical devices. That is why gas flow analyzers support the conversion vaious gas standards. What exactly are gas standards? Gas standards describe the gas volume (e.g. Tidal Volume) at specific conditions. These conditions include temperature, pressure, and humidity. Imagine a balloon, filled with air. The air within […]

October 14, 2022

Leak Flow Compensation for Volume Measurement

What should be considered when measuring inhalation (Vti) and exhalation (Vte) volumes of ventilators with an intentional leak?For precise measurement of the tidal volumes, the leak flow must be compensated. An intentional leak, at the patient’s mouth, falsifies the inhalation and exhalation volumes. Intential leaks are common in non-invasive ventilators for CO2 washout. The leakage […]

February 23, 2021

What impact do Gas Standards on Flow or Volume measurements?

Feedback from biomedical engineers has shown us that many measurement errors of flow are caused by a mismatch between the gas standards used by the device under test (e.g. a medical ventilator) and the gas flow analyzer used for flow and volume testing. Keep in mind both devices are measuring the same gas flow but […]

September 24, 2020

Temperature influence in flow and volume measurement

In mechanical ventilators, the inspiratory and expiratory volume (Vti, Vte) and minute volume (Vi and Ve) must be precisely checked with a gas flow analyzers or a ventilator tester. Ventilator testers, from different manufacturers, can measure flow and volume. However, flow accuracy is strongly temperature dependent and needs to be temperature compensated. This is particularly […]

August 21, 2019

Gas FlowAnalysers

Gas flow analyzers and ventilator testers are used to test any kind of medical device that exerts pressure or produces flow.

June 5, 2019

Test Automation for Ventilators

The CITREX H5 ventilator analyser supports users with Apps for testing and calibrating their devices. The Apps enable safe and fast testing. Entire test sequences are displayed with images and texts, and measured automatically. The test results are recorded in a PDF report, which can be signed directly on the screen. Several ventilator manufacturers such […]

March 17, 2021