A very simple tool that uses the anatomical difference between the oesophagus and trachea as its working principle.

If there is negative pressure, you are in the oesophagus; if you can aspirate air, you are in the trachea.

If the tube is in the soft, unsupported oesophagus, the walls will collapse around the end of the endotracheal tube, creating negative pressure.

If the tube is in the rigid trachea, air can easily be aspirated.

Should not be used in children less than 5 years old or less than 44 pounds.

Tube Chek Literature