Figure 2.

Left-hand figure demonstrates the use of the BLUS subglottic suction port for the aspiration/removal of material that collects above the cuff. The right-hand figure demonstrates the flow of gas if the suction system is reversed and gas is delivered via the suctionaid port to exit via the larynx, above the cuff. The gas will escape through the upper airways and pass through the vocal cords, potentially allowing vocalization. Ventilation of the lungs can continue independently.

BLUS: Blue Line Ultra Suctionaid™.