An animated diagram illustrating a simplified schematic of a closed-system <a href="https://en.wikipedia.org/wiki/ventilator" class="extiw" title="w:ventilator">ventilator</a> (a.k.a respirator) where a CO2 filter recycles air to reduce waste and an outflow valve controlled by the ventilator releases pressure that builds up as more and more fresh air is added to the closed system. The fresh gas flow is an optimized mix so they can control the oxygen ratio, eliminate particulates, etc. This type usually used in our anesthesia ventilator because the anesthesia gas is expensive, so all the gases (air, oxygen, anesthesia gas, etc.) are kept constrained in the tubing and re-breathed.
Eleanor Lutz
2020-04-01
<p>Tabletop Whale: Explaining ventilators for COVID-19
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