What is the difference between a ventilator and an oxygen generator?

The oxygen generator is a stand-alone or portable device that can inhale the surrounding air, filter out the nitrogen, and discharge the remaining oxygen as a concentrated gas. The main function of the oxygen generator is to deliver more oxygen than the surrounding air.

The sleep ventilator is an independent device that compresses ambient air to generate pressure for therapeutic purposes. It is widely used in the home to treat obstructive sleep apnea (OSA), but it can also be used by respiratory therapists in emergency situations in hospitals.

When using OSA, the main problem is that the throat collapses during sleep, causing the patient to snore. But this repeated collapse of the throat actually hinders airflow into the lungs, which may eventually lead to dangerously low oxygen levels in the blood.

There are 2 main differences between oxygen generators and CPAP machines:
The concentration of oxygen in the air
The amount of pressure flowing through the pipeline

As mentioned earlier, the main function of the oxygen generator is to increase the percentage of oxygen in the ambient air. However, the sleep ventilator does not increase the amount of oxygen in the airflow it generates. When the sleep ventilator produces a higher ambient air pressure, the oxygen concentration remains at 21%.

In order to solve the second point, although the oxygen generator increases the oxygen level in the air to 87%-100%, in the presence of OSA, it cannot generate enough pressure to keep the throat open.