A tracheal tube is a medical device used to keep the airway open during artificial ventilation or anaesthesia. It is also known as an endotracheal tube. Synonyms for a tracheal tube include respiratory tube, breathing tube, intubation tube, airway tube, and endo-tube. The word "tracheal" refers to the trachea, which is a tube-like structure that connects the throat to the lungs. This tube is made of cartilage rings, which help to keep it open and allow air to pass through. Tube insertion requires an anaesthetic, and it can cause discomfort and soreness in the throat post-procedure. However, it is essential in certain medical situations to maintain a patient's breathing and oxygen levels.