The device is called the Austin Bridge Breathing Unit, and it uses a manual resuscitator, a common tool called an AMBU (artificial medical breathing unit) bag. A windshield wiper motor pulled from a Toyota Camry powers a small caster wheel that pushes down on the bag to control oxygen flow. Four potentiometers control the respiration rate, the volume of oxygen given to patients, the time to inhale and the maximum pressure.
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