Some more thoughts on the before-mentioned Ventilator Challenge:
As mentioned in the first part, I am not a medical professional, and everything I say here is my shot-from-the-hip opinion and should not be taken as fact or good practice.
The specifications of the Codelife Ventilator Challenge are a bit thin. There is a longer, well done specification for an emergency-type ventilator from the UK government.
If we look at the history of ventilators, most of them seem to have volumetric pumps as pressure sources, often a kind of bellows that moves with the same frequency as the lungs of the patient. Accordingly, there are some designs of emergency ventilator concepts (example) that use bag valve masks and add a motor-driven mechanism to push on the bag – and therefore air in the patient’s lungs.Read More