Product design and development consultancy company Wideblue has developed the world’s first personal capnometer for client Cambridge Respiratory Innovations (CRiL).

Named N-Tidal, the small, battery-powered device can be used to measure the amount of CO2 in exhaled breath.

By observing the changes in CO2 concentration as a patient breathes in and out through the device, the health of a patient’s lungs can be assessed.

Wideblue managing director Russell Overend said: “There are other respiratory devices in use such as peak flow meters and spirometers, but they are difficult for the patient to use, requiring the patient to blow hard through a tube.

“The device is to be used by patients with respiratory-related diseases such as asthma, COPD and CHF.”

Wideblue’s new handheld device can be used by patients at home, by GPs or respiratory specialists.

As the device is small, the sensor can be positioned directly in front of the mouth for better resolution of the CO2 concentration in each individual breath profile.

It can be used by multiple patients by simply breathing in and out through the breath tube in a normal relaxed manner whilst preventing cross-contamination.

The replaceable breath tube comes with an integrated infra-red window.

A traffic light system of red, amber and green will update the user on the health status of their lungs. If necessary, it will indicate the further requirement of a follow-up message or call for treatment.

Overend added: “The device is currently undergoing clinical/user trials and has already produced superb clinical results. Subject to successful completion of these trials and regulatory approvals we expect the units to go into commercial production in 2020.”