Pneumatic cylinders are cycled by a servo actuator to replicate the cycle, frequency, and volume of human breathing
Thermetrics external breathing system connects to the manikin with hoses for inhaling and humidified and temperature controlled exhaling. A manifold installed behind the manikin face allows for breathing through the nose or mouth in any combination:
Inhalation through the mouth and out through the mouth
Inhalation through the nose and out through the nose
Inhalation through the mouth and out through the nose
Inhalation through the nose and out through the mouth