Bellows and Housings
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Anesthesia ventilators are considered a crucial part of modern anesthesia centers. Bellows or ventilator bellows look like breathing bags with a transparent plastic canister that physically separates the driving gas circuit from the patient gas circuit. The driving gas circuit is located outside the bellows while the Patient gas circuit is inside the bellows. During the expiratory phase, the driving gas enters the bellows chamber. When the bellow is compressed, the anesthetic gas within the bellows is delivered to the patient’s lungs. Bellows can be a single circuit or double circuit. It is the responsibility of the anesthesiologist to have complete knowledge of the functioning of the ventilators to use them conveniently.