Ann: Uscom VENTITEST Global Release, page-41

Thank you for all the answers regarding the utility and competitiveness of ventitest. Because this is a very important question, I decided to directly clarify with Professor Phillips by emailing him. His reply provided great insight, so I thought I may share this with everyone here in this forum. I have Professor Phillips's permission to do so:

Hi ******

Thanks for the enquiry. This is actually a complex answer.

Ventilators and respiratory support devices come in many forms and iterations, and many do have on board “calibration”, while some do not and others still other on board calibrators are of lesser reliability. Despite these on board calibration technologies the ventilators etc. all still “drift”, and require daily, weekly monthly or annual recalibration/servicing. Depending on how critical the ventilator application, this “drift” can be serious in terms of optimal care. A simple test to detect “calibration drift” can be used to determine if a full calibration is required or the device is operating within clinically tolerable ranges of accuracy. “Testing” requires a high fidelity flow/pressure/volume meter. If there is significant difference between “test” device and clinical device, then the respiratory support device receives a complete “re-calibration” service, as Im sure you are aware. Full “calibration” requires additional measurement of temperature and oxygen saturation.

The critical aspect of the use of these devices of course is their accuracy (ventilator, CPAP, etc.) and the reliability of any on-board calibration. Current methods of calibration use thermopile, differential pressure and some even turbines as inexpensive “test/calibration” solutions, while VENTITEST is based on digital multi-path ultrasonic technology with resolution of ±2.5%. It has additional advantages of being stable, easy to disinfect, and complimentary VENTITEST-S software for archiving analysis and monitoring and report generation. Ultrasound is also accurate across a wide range of flows and so is a contiguous technology for neonates and heart failure, and athletic adults. So our market position is simpler, more accurate and widely applicable testing and calibration; providing research quality measurements for critical, clinical and home use respiratory support devices. Most importantly it is simple and rapid to operate and provides user independent outputs. I hope this helps.

Kind Regards

Rob Phillips

Prof. Rob PhillipsPhD(Med), MPhil(Med), FASE, DMU(Cardiol)
Chairman, CEO, Chief Scientist, Uscom Limited, Sydney, Australia
Adjunct Associate Professor, Critical Care Research Group, School of Medicine,
The University of Queensland, Brisbane,
Australia Visiting Professor, Cardiovascular Physiology and Critical Care, Jining University Medical School,
Peoples No1 Hospital, Jining, Shandong, China