Test lung

Disclaimer: build intended only for educational or simulation purposes.

Commercial test lungs, like the dräger one, can be really expensive so we designed a low cost, low complexity one using a latex balloon from an anesthesia or ventilator circuit. Our model is thought to be connected to an quick garden hose connector** but since the anesthesia balloon has standard connection measurements, it can be also attached directly to a ventilator tubing. This model is capable of firing vent inspiration trigger just taking apart both aluminium plates. Also sliding a overwidth wood strip clamp over the plates allows to change the model’s distensibility.

Bill of materials:

-. Anesthesia circuit balloon, a 3 liter one in our case.

-. Aluminium plate, shaped to cover nearly all the balloon length and width, in our case it's mostly a kind of rectangle 13x35cm with the edges on one side cut. We used 0,8mm thick plate but other materials or sizes might be useful as well.

-. 3D printed s