Home Care Medical Products

The Function and Choice of Home Oxygen Machine

by len king on Feb 14, 2023

The Function and Choice of Home Oxygen Machine

An oxygen concentrator is a medical device that concentrates ambient air to produce oxygen-enriched air. It is a useful tool for individuals who require supplementary oxygen therapy due to respiratory conditions such as chronic obstructive pulmonary disease (COPD), pneumonia, asthma, and COVID-19. This report will provide an overview of the functioning of oxygen concentrators, their benefits, and limitations.

Functioning of Oxygen Concentrator:

An oxygen concentrator uses a process called Pressure Swing Adsorption (PSA) to separate nitrogen and other gases from the air. The device comprises of an air compressor, sieve beds, a pressure equalization reservoir, and a flowmeter. The air compressor pulls in ambient air and passes it through the sieve beds. The sieve beds contain a material that adsorbs nitrogen and other gases, leaving behind oxygen-rich air. The oxygen-rich air is then stored in a pressure equalization reservoir and delivered to the patient through a flowmeter.

Benefits of Oxygen Concentrator:

  1. Cost-effective: Oxygen concentrators are less expensive than traditional oxygen therapy, which requires heavy oxygen cylinders that need to be frequently refilled.

  2. Portability: Oxygen concentrators are lightweight, compact, and easy to move around, making them suitable for use at home and while traveling.

  3. Continuous Oxygen Supply: Oxygen concentrators can produce oxygen continuously, ensuring that patients receive the required amount of oxygen as prescribed by the physician.

  4. Safety: Oxygen concentrators do not involve the handling of flammable gases, unlike traditional oxygen therapy, which poses a risk of fire.

Limitations of Oxygen Concentrator:

  1. Dependence on Electricity: Oxygen concentrators require a stable source of electricity to function, which may pose a challenge in areas with frequent power outages.

  2. Noise: Oxygen concentrators produce noise while functioning, which may be disturbing for some patients.

  3. Maintenance: Oxygen concentrators require regular maintenance, including filter replacements and cleaning of the sieve beds, to ensure that they function optimally.


Oxygen concentrators are a useful medical device that provides oxygen-enriched air to individuals who require supplementary oxygen therapy. They offer several benefits, including cost-effectiveness, portability, continuous oxygen supply, and safety. However, they also have some limitations, such as dependence on electricity, noise, and maintenance requirements. Despite these limitations, oxygen concentrators remain an essential medical device for individuals with respiratory conditions, particularly during the COVID-19 pandemic.

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