Tracheal tubes and systems

摘要

A tracheal tube 1 has an extruded suction lumen 16 extending along its length on the outside of the curvature of the tube. The suction lumen 16 opens internally to the main lumen 14 through a series of holes 61, which increase in size towards the patient end 11 of the tube. Towards the machine end 12 of the tube, the suction lumen 16 is connected to a suction source 3 by which suction is applied to the suction lumen to remove secretions that collect inside the tube.