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The intended use of the Modified Vest™ 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 Vest™ 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 Advanced Respiratory 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 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 user creating high-frequency chest wall oscillation and mobilization of bronchial secretions.

The intended use of the Advanced Respiratory modified Vest™ 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. The Advanced Respiratory modified Vest™ 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 Advanced Respiratory modified Vest™ Airway Clearance System is a high-frequency chest wall oscillator for enhancing the mobilization of bronchial secretions. The device is designed for use in applications where patients are unable to manually operate the device output functions, e.g. organ donor procurement centers. The primary components of the Advanced Respiratory modified Vest™ Airway Clearance System include an air-pulse generator, an inflatable vest and connecting tubing. 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 donor patient creating high-frequency chest wall oscillation that results in the mobilization of bronchial secretions. The air output pulses are set at a fixed frequency (13 Hertz) and pressure (equal to a dial setting of 6 on the predicate device).