The Ambu Bag consists of a flexible air chamber, attached to a face mask via a shutter valve. When the air chamber or “bag” is squeezed, the device forces air through into the patient’s lungs; when the bag is released, it self-inflates, drawing in ambient air or a low pressure oxygen flow supplied from a regulated cylinder, whilst the patient’s lungs deflate to the air through the one way valve.

The Ambu Bag consists of a flexible air chamber, attached to a face mask via a shutter valve. When the air chamber or “bag” is squeezed, the device forces air through into the patient’s lungs; when the bag is released, it self-inflates, drawing in ambient air or a low pressure oxygen flow supplied from a regulated cylinder, whilst the patient’s lungs deflate to the air through the one way valve.