After feasibility has been proved, a final design will be made which will need to be successfully tested against the MHRA requirements before we can apply for medical device clearance. 

The UK National Physical Laboratory will conduct this testing.

Although this project is open source this design is not permitted for anybody to make themselves as this will not provide sufficient quality control needed for medical product clearance when it gets to that stage, instead we will need to collaborate with manufacturers.

Please take a moment to share our work and consider helping fund our design if you can.

We are a team of volunteers and we are not being paid for the work we
are putting in to this project.

We require funding for building the next set of prototypes for testing against the MHRA requirements

All donations received will go towards; buying parts & materials and production of a small number of test units (unit costs will reduce quickly with higher volumes).


Ventilator capacity is improving in countries that can afford to make non-emergency use ventilators, but these more complex designs take time to scale up, use specialist components and are costly, so these are not a suitable solution for all countries. We are working to address the ventilator shortage in the developing world.  The design is based on a hand pumped ventilator called an ambu-bag (or BVM), these low cost devices are readily available in most countries health care systems and crucially already have medical clearance. 

There are lots of incredible teams out there designing ventilators, and the worldwide ventilator shortage is not going to be solved by one ventilator design. We are working to meet an unmet need and we go by the following values:

Based on an ambu-bag

Ambu-bags exist readily in most countries healthcare systems with pre-existing medical approval for manual ventilation.

Rapid manufacture

Made from readily available materials and production processes to enable rapid manufacture at low cost.

Can be used anywhere

Not dependent on compressed airline which may not be available in hospitals with less resources (oxygen is separate).


Bag compression can be monitored through transparent panel for feedback.


Our first open source basic mechanical design concept is published.

Version 2.0 design is tested at National Physical Laboratory

Version 2.0 open source design is published

Build two Version 3.0 prototypes using 3D printed flow sensors

Software written for PCV and adaptive ventilation modes

Testing of the final design at NPL to MHRA requirements

Build 10 prototypes & receive CNC machined prototype flow sensor

Begin 24/7 life test on prototypes, document design and post PR/press articles to gather interest in final design


Darren Lewis

Project Lead

Darren is a Design Manager working in Dyson’s New Product Concepts team in R&D. With 10 years industry experience developing complex electro-mechanical systems into products. Darren has an extensive multidisciplinary engineering skill set in mechanical, electronic & software engineering.

Ross Goodwin


Ross is an Associate Principle Engineer working Dyson’s motor development team. He has over 10 years of experience developing high speed turbo-machinery to meet performance, durability safety and functional requirements. Ross’ engineering skill set includes structural and thermal simulation, design for manufacturer, and experimental testing of complex electro-mechanical systems.

Angus Thomson


Angus is the founder of CircuitBuilder – a web based platform designed to simplify the process of creating custom electronics. He has nearly 20 years experience working across a wide range of industries, from consumer electronics to defence, in companies ranging from 2 people to 20,000.

Donald Robson


Donald is an Embedded Development Engineer at Graphcore, with a varied career encompassing mechanical design, mechatronics and firmware development. During his time at Dyson he influenced a number of flagship products in environmental control, floor-care and lighting.

Sam Riley


Sam is a Safety Critical Programmable Elements Certification Engineer. He works as part of MoD Software and Cyber security Certification team, working to assure the safety and airworthiness within aviation.

Kian Ming Yak


Yak is a mechanical engineer with 5 years experience developing and launching products in multiple industries, including audio, AR and IOT.

Cristian Taran

Project Management

Cristian is a software developer with more than 15 years experience in developing software and managing software engineering teams in diverse industries.

Jonas Fehr

Mechatronics & Software

Jonas is a creative coder working mainly in the field of light and media art. He has a broad skillset, ranging from electronics over software to mechanical engineering.

Rick Collins


Rick studied electronics since the age of 15 resulting in an MSEE. Working for a number of companies, his niche developed into board level design and programming FPGA devices.

Sam Partridge

Embedded Firmware

Sam is an Embedded Test Engineer at Graphcore with a PhD in High Frequency Engineering. Sam has experience in developing automated hardware test systems as well as embedded firmware.



Lead consultant anaesthetist, Dr Garcia working in a UK Intensive Care Unit.

Daniel Stemen, Manager of Respiratory Care and Interventional Pulmonary Services, Keck Medical Center, California

Erich Schulz, anaesthetist, Brisbane


2 nurses who are working to treat COVID patients in Intensive Care.


P3 Medical: Manufacturer of ventilation devices –


Darren Lewis

Project Lead

contact information

write us or contact us on our social media


All users of this design and device shall be deemed notified of the warnings stated herein. This device is a simply designed, fast produced ventilator. This device should not be used in place of an existing hospital ventilator. These should only be used as a last resort where a patient has no other alternative due to the lack of availability of existing ventilators. This is not a fully medically certified device and should not be relied upon as such. The device is designed for use by trained medical professionals and should only be used by trained medical professionals; it is not intended for home use.

The designers and manufacturers of this device shall not be held liable for any death or injury that may result from this device.

The designers and manufacturers of this device give no guarantees or warranties as to the efficacy and/or safety of this device.

This design isn’t connected with Dyson or any other ventilator projects including Dyson CoVent.