Authors

Inspiration

Ventilation saves lives. We have developed a non-invasive ventilator with simple, widely available and inherently safe components. Non-invasive ventilators are required to provide oxygen to patients whose lungs are still functioning. Patients with severe COVID-19 symptoms will require invasive ventilation - the CPAP helmet is unlikely to be suitable for this. However, the CPAP helmet should be used in places where lung function is still present. This applies to patients with milder symptoms as well as patients who are discharged from the critical care unit. This is intended to help increase the availability of beds in critical care units. A respiratory helmet is already commercially available as a "Starmed helmet". This is used for none inveasive ventilation (NIV) Advantages of the helmet in medical terms are

Use with stomach tube possible no leaks Reduced risk of aspiration during regurgitation Patient can talk during the treatment No active breathing gas conditioning necessary If it should come to a high and rapid increase of Covid-19 case numbers - we hope that our helmet can be built with simple & widespread components. The design is inherently safe for the doctor and patient. Furthermore, the helmet can be produced in large quantities and in a short time.

What it does

A central tube system wich is common in most hospitals feed medical pressurized air and Oxygen each to a needle-valve wich can be adjusted manually to deliver a constant volume flow of a air/CO2 mixture at the required composition. The gas ist then fed into a diver-style Helmet from transparent plastic foil. The typical pressure inside is 20 mbar above the ambient air. A spring regulated valve can be set to generate this pressure as desired. The exhaust airflow from it is then fed into a UV sterilisation Tube wich uses the principle of zyclone separation and the antimicrobial uv light from a neon-tube shaped light source.A central tube system wich is common in most hospitals feed medical pressurized air and Oxygen each to a needle-valve wich can be adjusted manually to deliver a constant volume flow of a air/CO2 mixture at the required composition. The gas ist then fed into a diver-style Helmet from transparent plastic foil. The typical pressure inside is 20 mbar above the ambient air. A spring regulated valve can be set to generate this pressure as desired. The exhaust airflow from it is then fed into a UV sterilisation Tube wich uses the principle of zyclone separation and the antimicrobial uv light from a neon-tube shaped light source.

How I built it

The hood can be made from an industrial used chip bag. The tube connectors can be made as clamped / glued connections from 3D-printed parts or from PE-bottle parts that get weldet to the hood. A preassure relief valve should be integrated for safety reasons. To save up conectors and working times the preasurized air, which gets moistened, is mixed with oxygen before the gas is led into the hood. The contaminated exhaust air from the patient is cleaned with an UV-filter system. Such a filter can easy be made with an PVC-tube with sealed end-cap. A UV-light is mounted inside the tube, a tube-shaped UV-light is an advantage. The exhaust-air from the patient is introduced to the filter threw a hole, which is fitted with an tube connector.

Challenges I ran into

Many and many more to come. This is a great time that can tackle the challanges. Off our day to day work we are building this project as open-hardware. Challanges are to find easy to source and use materials that are readily availible worldwide. Also keeping the preassure in the helmet is not as easy as it may seem - but first tests to use silicon or latex based bathing-caps might just seem to do the trick. If you as a reader of our posting here would like to contribute in the area of design, communication, market outreach, regulation ... please let us know.

Accomplishments that I'm proud of

Inspiring process. We just met some hours ago online and have already gone trough a very creative and fruitful development. Enabling us and others to start building the first prototyp soon Everyone learned to use the knew collaboration tools fast Unconventionell ideas are allowed - making simple and easy to accomplish solutions possible

What I learned

Never stop thinking and rethinking. Great people and actionable results.

What's next for CPAP Bell

We are building it and are seeking your support. With contacts in the industry and fab labs we will bring the concept to scale.

Try It out

Hackathons

Devpost Software Identifier

255270