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 […]
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 […]
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 […]
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 […]
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 […]
Gas flow analyzers and ventilator testers are used to test any kind of medical device that exerts pressure or produces flow.
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 […]
COVID-19 is causing respiratory problems for a multitude of patients and is directly affecting hospitals, especially Intensive Care Units (ICU), where in many cases there are not enough mechanical ventilators to help patients to breathe. DEKRA laboratories are working on various projects of ventilator system manufactures. As these medical devices need to be assessed to […]