Cuffed medico-surgical tubes

摘要

The cuff 4 on the patient end 2 of a tracheal tube 1 is attached at one end to the inside of the tube and at the opposite end to the outside of the tube. The cuff 4 encloses an axial sleeve 9 that is slidably mounted within the patient end 2 of the tube 1 and is urged forwardly by a resilient collar 10. The sleeve 9 can be retracted by applying vacuum to the cuff 4 and, when released extends forwards to prevent the cuff occluding the patient end 2 of the tube 1.