The Lung Flute - An Acoustic Device for Airway Clearance

Introduction

It is a handheld device that uses sound waves to mobilize and clear secretions. It is shaped like a tubular in shape with a plastic mouth piece at one end. A Mylar reed is present within the device which vibrates on use.

Mechanism of Action

The Mylar reed has flairs on the end that increases the air mass within the device. This provides acoustic impedance. When the device is being used, the reed will oscillate at a frequency that matches that of pulmonary secretions. Thus, the viscosity of the pulmonary secretions are reduced by the resultant sound waves. This allows for easier expectoration.

Method of Use

First, perform a deep inhalation. Then, place your lips around the mouthpiece. Exhale forcefully through the Lung Flute as if trying to blow out a candle. After that, remove the mouthpiece from your mouth and quickly inhale again. Now, put the mouthpiece back in your mouth, and blow gently through the Lung Flute.

Remove the mouthpiece again and wait 5 seconds, taking several normal breaths.

For best results, blow into the Lung Flute for up to 20 sets of two blows per set. (You may need to begin slowly and build up the number of repetitions over time.)

Approximately 5 minutes after the session has ended, mucus will have collected at the back of the throat and you may start to cough vigorously. You may notice thinned mucus collecting at the back of your throat for several hours after the session, which is normal. A drink of water will wash away the mucus and prevent minor throat irritation.

Indications

The Lung Flute is indicated for the following conditions:

• COPD
• Asthma
• Emphysema
• Chronic Bronchitis
• Bronchietctasis
• Cystic Fibrosis
• Primary Ciliary Dyskinesia
• Respiratory infections and Pneumonia
• Seasonal respiratory influenza
• Pulmonary rehabilitation and case management