RIO DE JANEIRO, BRAZIL - With the pandemic of the new coronavirus, causing the Covid-19 disease, the demand for medical ventilators has skyrocketed. The disease causes not only fever and cough, but also breathing impairment. As a result, infected people may need hospitalization and start breathing with the help of devices.

Ventilators are medical devices that help people breathe when the respiratory system becomes impaired, as is the case with people who contract the Covid-19 and have severe medical conditions.

What these devices do is carry air through a tube in the patients' trachea into their lungs. Unless this . . .

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