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PS: I haven't looked closely at the MIT design. I did look closely over the Challenge requirements.<br>
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There are some requirements in the Challenge that the MIT design might not meet. <br>
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Ventilators have basically push-air-in release-air-out. <br>
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The push needs a trigger. It can be simple - N times per minute. It can be "when the pt breathes in, start pushing to help. Also start pushing if they don't after N seconds"<br>
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The push needs an amount limit. It can be 0.7liters. It can be upto 40cmH2O. It can be both.<br>
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The push needs a time limit - no more than N seconds, with at least M seconds between pushes<br>
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The released air must go further out, not back along the input tube<br>
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And the release-air-out also needs Positive End Expiration Pressure - restrict the output flow in some manner so the lungs keep at least upto 20cmH2O air pressure<br>
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I don't know which of these the MIT design meets. I don't see an obvious set of triggers and the PEEP support may be rudimentary<br>
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I can think of several easy ways to add these<br>
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/Bevin</div>
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