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The intended use of the ABI Vest Airway Clearance System is to promote airway clearance or improve bronchial drainage by enhancing mobilization of bronchial secretions where external manipulation of the thorax is the physician's choice of treatment. The indications typically follow the Clinical Practice Guideline published by the American Association for Respiratory Care (AARC) 1991. In addition, the device is also indicated for the purpose of collecting mucus for diagnostic evaluation. The intended use of the ABIVest™ Airway Clearance System is the same as the predicate device, which is to provide airway clearance therapy when external manipulation of the thorax is the physician's choice of treatment. Indications for this form of therapy are described by the American Association for Respiratory Care (AARC) in the Clinical Practices Guidelines for Postural Drainage Therapy (1991). According to AARC guidelines, specific indications for external manipulation of the thorax include evidence or a suggestion of retained secretions, evidence that the patient is having difficulty with the secretion clearance, or presence of atelectasis caused by mucus plugging. In addition, the ABIVest™ Airway Clearance System is also indicated for external manipulation of the thorax to promote airway clearance or improve bronchial drainage for purposes of collecting mucus for diagnostic evaluation.

The ABI Vest Airway Clearance System is a high-frequency chest wall oscillator designed to be used in a wide variety of settings for enhancing the mobilization of bronchial secretions. The primary components of the ABI Vest Airway Clearance System include an air-pulse generator and an inflatable vest. Oscillating positive pressure air pulses are applied to the vest by the air-pulse generator. The resulting pressure pulses cause the vest to inflate and deflate against the chest of the patient creating high-frequency chest wall oscillation and mobilization of bronchial secretions. The frequency of the air pulse is operator controlled and adjustable from 5 to 25 Hz.

The intended use of the modified ThAIRapy® Vest is the same as the predicate device, which is to provide airway clearance therapy when external manipulation of thorax is the physician's choice of treatment. Indications for this form of therapy are described by the American Association for Respiratory Care (AARC) in the Clinical Practice Guidelines for Postural Drainage Therapy. According to AARC guidelines, the goals of airway clearance therapy are to improve mobilization of bronchial secretions, match ventilation and perfusion, and normalize functional residual capacity. Specific indications for external manipulation of the thorax include evidence or a suggestion of retained secretions, evidence that the patient is having difficulty with secretion clearance, or presence of atelectasis caused by mucus plugging.

The ThAIRapy® System is a high-frequency chest wall oscillator designed be used in a wide variety of settings for enhancing the mobilization of bronchial secretions. The primary components of the ThAIRapy® System include an air oscillator and an inflatable vest. Oscillating positive pressure air pulses are applied to the vest by the air oscillator. The resulting pressure pulses cause the vest to inflate and deflate against the chest of the patient creating high-frequency chest wall oscillation and mobilization of bronchial secretions. Frequency of the pulse air is operator controlled and adjustable from 5 to 25 Hz.