MakAir — Covid-19 Respirator
3D printable Covid-19 DIY respirator (caused by the SARS-CoV-2 virus). Aims at helping hospitals cope with a possible shortage of professional respirators during the outbreak.
We are a distributed team of 50+ contributors, mostly spread through France. Makers, developers, university teachers, researchers and medical teams collaborated on this project. Our testing assembly operations are located in Nantes, France.
If you're new there, please read the explanations below. Your contributions are much welcome!
Roughly, the idea is as follow: hospitals will soon lack mechanical artificial respirators. We aim at building a pump, and a valve system (controlled by electronics). This way, the breathing cycle can be enforced by proper air routing through the valve system.
The overall system is composed of sub-components that can be plugged together and wired to form an air circuit, namely:
- Air pump (called "Blower");
- Valve system (routing variant) (called "Air Transistor" — will be used in V2);
- Valve system (depressuring variant) (called "Pressure Valve" — used in V1);
- Valve system (two-way variant) (PEEP valve, called "Two-Way Valve");
- Venturi valve (called "Oxygen Mixer");
- Air filter casing (called "Filter Box");
- Pipe adapters (called "Adapters");
In order to ensure a proper breathing cycle (inhale + exhale), multiple valves need to be connected together to form a circuit. The motors needs to be controlled in harmony so that the air routing between each valve unit is consistent.
|Component||Version||Last Changelog||Ready?||Live CAD Models||Contributors|
|Blower||V13||Increased air compression rate||
||view model||Cooprint + @baptistejamin|
|Air Transistor||V4||Moved away from the guillotine system||
|Pressure Valve||V4||Smaller size, FDM printing optimizations||
||view model||Sebastien Le Loch + @valeriansaliou|
|Two-Way Valve||V1||Initial design||
|Oxygen Mixer||V3||Designed from scratched||
|Filter Box||V4||Improved the screwing pitch, add markers||
||none||Martial Medjber + @eliottvincent|
|Adapters||N/A||Add a test lung adapter||
General Concept Scheme
Pneumatic Circuit Scheme
You may click on the scheme to enlarge.
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