The Innovent device works on the principle of cough simulation, and has two components: a suction unit and a disposable valve. The suction unit generates airflow at a flow rate equivalent to that of a natural cough, while the valve connects the suction unit in-line with the patient's ventilation circuit, and controls the timing of each simulated cough.

The ventilator performs inhalation, filling the patient’s lungs with air. When the lungs are maximally inflated, the Innovent suction unit automatically generates a brief, rapid suction flow out of the lungs via the Innovent valve, which simultaneously closes off the ventilator. The sudden switch from deep inhalation to rapid exhalation simulates a natural cough, clearing secretions from the patient’s airway. The Innovent system automatically terminates the cough in time for the patient's next breath from the ventilator. Mobilized secretions collect in the valve and endotracheal tube, and are removed by an integrated closed-suction catheter.

Roll your mouse over the diagram to learn more about the components of the Innovent system.