The document discusses the Flutter device, which is used for airway clearance. The Flutter produces oscillatory positive expiratory pressure and can be used as an alternative to remove secretions from the airways. It works by vibrating the airways, intermittently increasing endobronchial pressure, and accelerating expiratory airflow. The Flutter is recommended for use three times per day for conditions like cystic fibrosis, emphysema, and bronchitis. It helps loosen and remove trapped mucus from the lungs.