The Ambu has a squeezable bag, a one-way valve, and a face mask. Compressing the bag opens a valve, forcing air through a mask or artificial airway into the lungs, according to the journal "Critical Care Nurse." Releasing the bag closes the valve and exhalation occurs passively through the exhalation port. During exhalation, the bag automatically refills with room air or oxygen. The cycle continues until spontaneous breathing occurs or breathing is mechanically supported by a breathing machine.

Resuscitation PVC bag is made of latex-free high-grade medical silicone material, strictly autoclaved to 134℃to to prevent cross infection and contamination. It is equipped with an overpressure valve and an oxygen reservoir connector. Removable and disinfectable in cold with non-corrosive bactericidal solutions. The manual resuscitator bag has a specially textured surface to ensures that a comfortable and firm grip is guaranteed, allowing for effective ventilation over extended periods, without the problem of hand fatigue. The unique shape is small and easy to hold. The ergonomic, lightweight design of this artificial respirator is made for optimal user handling and support.