Inside the pipe is a plastic cone cradling a steel ball sealed with a perforated cover. Its aim is to improve ventilation and mucus production. Begin by placing your lips around the mouthpiece and taking a breath in through your nose. Then exhale through your mouth with a moderate force. This will cause the ball to oscillate in the pipe.
Oscillation is transmitted throughout the airways, loosening secretions.
The force of exhalation, will help mobilize secretions. After 20 deep breaths, the huff cough is done. This sequence is repeated for 20 minutes or until there is no sputum production. By changing the angle at which you hold the device you can change the oscillation. Clean the device weekly by disassembling the flutter, wash the pieces in a mild dish soap, rinse with clean tap water and air dry over night.