An ETT (Endotracheal Tube) Closed Suction System is a medical device that allows healthcare providers to clear secretions from a patient's airway without disconnecting them from the mechanical ventilator, maintaining continuous ventilation and oxygenation. It features a multi-use, inline catheter within a sealed circuit, reducing hypoxia risk, minimizing contamination, and allowing for easier, single-nurse operation compared to older "open" systems
