The Avery System is indicated for adult and pediatric patients who would otherwise be dependent on mechanical ventilation. Intact or repaired phrenic nerves and functional lungs and diaphragm muscles are necessary for the device to work properly.

Individuals who require chronic ventilatory support because of upper motor neuron respiratory muscle paralysis (RMP) or because of central alveolar hypoventilation (CAH) and whose remaining phrenic nerve, lung and diaphragm function is sufficient to accommodate electrical stimulation may be eligible for an Avery System evaluation.