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Cuffless tubes are primarily used in non-ventilated patients that have no difficulty swallowing and have no danger of aspiration. Since there is no cuff, it allows air to pass into the upper trachea and larynx so the patient can cough and speak normally.
Cuffless tubes are usually worn over a long period of time so require a very accurate fit in order to prevent pressure sores in the trachea or at the tracheal stoma. For this reason, they are usually offered in many sizes and can also be custom-made.