An airway clearance system and method produces high frequency chest wall oscillations (HFCWO) and increased airflow velocities through the air passages to clear the lungs of mucus. The system includes a chest wall force applicator to produce the HFCWO by applying an oscillating force component and a...http://www.google.de/patents/US6910479?utm_source=gb-gplus-sharePatent US6910479 - Airway treatment apparatus with bias line cancellation
Airway treatment apparatus with bias line cancellation
