SmartCuff Connected to the Valve of the ETT Pilot Balloon.

(A) The SmartCuff device automatically controls the internal cuff pressure once connected to the ETT pilot balloon valve. An extension tube is used to attach the SmartCuff device to the pilot balloon.

(B) Enlarged view of the SmartCuff device showing the set (upper right) and measured (center) cuff pressure values.

(C) A decrease in cuff pressure is indicated by the red alarm light on the front of the instrument screen and the downward-pointing arrow. The black dot indicates that the equipment is operating correctly. The numbers “28” and “0” on the screen show the set values and the currently measured values, respectively. ETT, endotracheal tube.

The Damaged ETT Cuff.

Air bubbles (black arrow) leaking from the small hole on the damaged ETT cuff were observed when air was injected into the cuff via the pilot balloon valve. ETT, endotracheal tube.