Carbon Dioxide Sensor to be Optimized for Medical Capnography Applications

Gas Sensing Solutions Ltd (GSSL) in conjunction with project partners Wide Blue Ltd (WBL) (project leader) and Cambridge Respiratory Innovations Ltd (CRIL) have secured a Technology Strategy Board (TSB) Collaborative Research & Development Project from the recent Photonics in Healthcare call. The project is valued at £748,000 UK.

This project aims to develop a low cost respiration rate monitor & capnometer, based on GSSL patented non-dispersive infrared fast response infrared sensor, sensing exhaled Carbon Dioxide and to trial demonstrators in various clinical settings. Respiration rate and exhaled carbon dioxide (CO2) concentrations are known to be key measures in the evaluation of patient health trends in both routine healthcare and emergency healthcare. However routine and reliable measurement of respiration rate is notoriously difficult to do. It is prone to false readings, outside influences and is therefore not considered reliable. Previous attempts have included the use of motion sensors, flow measurements or use expensive IR lasers and are prone to ergonomics concerns with product costs too high for widespread adoption and routine use.

This project will utilize unique patented low cost solid state mid-infrared light emitting diode/ photodiode detector combination and an optical waveguide to measure rates of exhaled CO2. Clinicians will be able to monitor respiration rates and CO2 concentrations in real time, facilitating treatment of acute (emergency medicine) and chronic respiratory conditions.

The project includes end user assessment by Emergency Department - Cambridge Universities Hospitals NHS Foundation Trust Addenbrookes Hospital, Papworth Sleep Laboratory and Glasgows Royal Hospital for Sick Children for clinical evaluation in paediatric anasthesiology. The project also aim to have the devices evaluated in GP and secondary care applications. Sports and Exercise Science, University of the West of Scotland (Hamilton) will evaluate applications for usage in sports.

Dr Des Gibson, CEO of GSSL commented, “our success in developing and productionising the fast response non-dispersive infrared CO2 sensor platform, trademarked as SPRINTIR, provides confidence that our unique technology can be further optimised to provide clear advantages for medical capnography applications. Moreover, the project brings together a world-class consortium, combining capabilities in GSSL gas sensor development & production, WBL medical device design, development, productionisation & qualification and CRIL clinical trialling, respiratory breath analysis & capnography market knowledge.”

Posted by CO2 Meter on September 09, 2013.
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