The oxygen gas production is generated by the Live Active Five POC using a molecular sieve and vacuum pressure swing adsorption methodology. Ambient air is drawn into the device, collected, and compressed. The nitrogen-adsorbing sieve beds are then filled with compressed air. Concentrated oxygen leaves the sieve bed at the opposite end and is guided into an oxygen reservoir before being distributed to the recipient. Oxygen is supplied to the patient through a nasal cannula. The dosage is delivered in pulse mode. When the user is inhaling, the system senses it and produces a calibrated pulse of oxygen. When the inhalation is not detected, no further oxygen is delivered. Based on the chosen pulse flow mode, a fixed volume of oxygen is supplied each minute. The volume of each oxygen pulse varies with the user's breathing rate to sustain the fixed minute volume.
Only Precision Medical POCs use Vacuum Pressure Swing Adsorption (VPSA) technology ensuring each sieve bed is perfectly regenerated every cycle. This results in clean sieve beds that produce high oxygen purity (95.5%) for a long period of time. With Controlled Minute Volume (CMV), patients receive therapeutic oxygen in the first third of the inspiratory se for maximum effectiveness, regardless of breath rate.