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Why Many DIY Ventilator Design Proposals Are Dangerous


The above video from the Real Engineering YouTube channel is titled “A Guide to Designing Low-Cost Generators for COVID-19” but it would be better titled “Why the Current DIY Ventilator Designs Are Dangerous”.

Most of the designs floating around are based on using a resuscitation bag the kind that paramedics use to force air into a patient until they can be transported to medical facility. These bags are only designed for limited use in emergency situations and are not appropriate for long-term ventilation.

There is no way to adequately control the volume or pressure of air being forced into the patient’s lungs.

A ventilator is a sophisticated piece of technology that does not lend itself to many of the simple solutions being proposed by well-intentioned engineers and makers. This is a must-see video for anyone interested in the topic.


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