This tube helps to remove an obstruction of the oesophagus ("choke"). In the main tube is a mobile irrigator, inserted in a separate lumen, which can be led directly to the obstruction.
An elastic cuff seals off the oesophagus. During irrigation, the irrigator tube can be extended further and further into the impaction. The dissolved mass can then be flushed out through the main tube in a continuous flow. There is no danger of aspiration into the lungs.