The Bragg-Paul Pulsator, also known as the Bragg-Paul respirator, was a non-invasive medical ventilator invented by William Henry Bragg and designed by Robert W. Paul in 1933 for patients unable to breathe for themselves due to illness.[1]
It was the first 'Intermittent Abdominal Pressure Ventilator' (IAPV).[2]
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