This project was born out of the desire to provide a non-commercial, easily producible ventilator, for use anywhere.
Set-up for this ventilator requires a battery and power inverter (or power outlet), some air tubing, two aquarium air pumps and a way to attach the tubing to the patient. A waterproof carrying case is recommended, but not required. It also requires a simple circuit, housed in a small electrical box, to control the rate of air flow. It can be connected to an oxygen tank, or just use regular air.
It started with determining the best way to control the air flow.
Quick drawing of possible operation and connections.
Testing the dual air pump system.
We built a circuit board to allow adjustments to the rate of flow, and the pressure.
Next, we hooked up the air hoses to the pumps, and ran it through a water jug to make sure it functioned as expected. We tested it with both the battery back, and by running AC through the adapter.
We drilled holes into the small electrical electrical box, and fit the control mechanism inside. Then we put it all inside the carrying case to make sure it fit.
Here is a video of one of our tests:
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