What is a Portable Oxygen Concentrator and How Does it Work?

A portable oxygen concentrator (POC) is a medical device designed to deliver oxygen to people with respiratory conditions that require supplemental oxygen. It is a compact and lightweight device that allows users to stay mobile and carry on with their daily activities while receiving the oxygen therapy they need.

The main function of a portable oxygen concentrator is to extract oxygen from the surrounding air and deliver it to the user in higher concentrations. Unlike traditional oxygen cylinders or tanks that store oxygen in a compressed form, POCs generate oxygen using advanced technology.

This is how a portable oxygen concentrator usually works:

  1. Air intake: The device draws ambient air from its surroundings through an intake system. This air contains approximately 21% oxygen, along with other gases such as nitrogen and trace elements.
  2. Filtration – Incoming air passes through a series of filters to remove impurities, dust and other particles. These filters help ensure that the oxygen supplied is clean and safe for the user.
  3. Compression: After filtration, the air is compressed to increase its pressure. This process allows a higher concentration of oxygen to be extracted.
  4. Sieve beds: Compressed air enters the sieve beds, which are made up of special materials known as zeolites. Zeolites are able to absorb nitrogen, separating it from oxygen-rich air. This adsorption process allows the oxygen concentration to increase significantly.
  5. Oxygen delivery: Oxygen-rich air is delivered to the user through a nasal cannula or mask. The flow rate and oxygen concentration can usually be adjusted to meet the specific needs of the individual.
  6. Waste gas release: The nitrogen and other gases that are separated during the adsorption process are released back into the environment. This ensures that the device is constantly producing a fresh supply of oxygen.

Oxygen concentrators are powered by rechargeable batteries, allowing users to operate them without the need for a hard-electrical connection. Batteries can be charged using standard wall outlets or car adapters, providing flexibility and convenience.

The Benefits of Using a Portable Oxygen Concentrator


  1. Using a portable oxygen concentrator (POC) can provide many benefits to people who need supplemental oxygen. Here are some of the main benefits of using a portable oxygen concentrator:
  2. Increased Mobility – An important advantage of a portable oxygen concentrator is the increased mobility it provides. Unlike traditional oxygen tanks, which can be bulky and heavy, POCs are lightweight and designed to be easy to carry or move. They allow people to move freely and engage in various activities, such as shopping, traveling, socializing or even playing sports, without being tied to a stationary oxygen source.
  3. Convenience and Independence – Portable oxygen concentrators provide a high level of comfort and independence for users. They eliminate the need for frequent refills or replacements associated with oxygen tanks by concentrating the oxygen from the surrounding air. This allows users to rely on a continuous, uninterrupted supply of oxygen, reducing the hassle of managing oxygen deliveries or tank changes.
  4. Continuous Supply of Oxygen: POCs ensure a continuous supply of oxygen as long as they have access to a power source or battery. This is especially useful for people who need oxygen therapy during the day and at night. With a portable oxygen concentrator, users can rest easy knowing they have a reliable source of oxygen available at all times.
  5. Improved quality of life – Being able to use a portable oxygen concentrator can greatly improve the quality of life for people with respiratory conditions. They are allowed to participate in social activities, travel, and pursue hobbies or interests, which may be limited by the need for supplemental oxygen. By providing oxygen therapy on the go, healthcare centers can improve general well-being, mental health, and social engagement.
  6. Energy Efficient – Portable oxygen concentrators are designed to be energy efficient and use advanced technologies to concentrate oxygen and reduce energy consumption. They often feature different oxygen delivery settings, allowing users to adjust the flow rate according to their own needs. This not only ensures an optimal dose of oxygen, but also extends the life of the battery, allowing it to be used for a longer period without recharging.
  7. Safety Features – Many portable oxygen concentrators come with safety features to ensure the welfare of the user. They usually contain alarms and indicators that alert users to a low battery level, low oxygen purity, or other problems. In addition, some models have built-in oxygen sensors that constantly monitor oxygen levels and adjust delivery accordingly, providing consistent and accurate oxygen delivery.

Practical Tips for Using a Portable Oxygen Concentrator

Using a portable oxygen concentrator (POC) can greatly improve the quality of life for people with respiratory conditions. Here are some practical tips for using a portable oxygen concentrator effectively:

  • Familiarize yourself with the device: Read the instruction manual provided by the manufacturer to understand the features, functions and safety tips for your POC model.
  • Consult a Healthcare Professional: Work closely with your healthcare provider or respiratory therapist to determine the appropriate oxygen flow rate and usage instructions for your needs.
  • Understanding Battery Life Portable oxygen concentrators are powered by rechargeable batteries. Know the estimated battery life of your device and plan accordingly. Keep spare batteries on hand if you expect to be away from the power source for an extended period.
  • Charging and power management: Follow the manufacturer’s instructions for charging the device. It is a good idea to fully charge the battery before going out. When using a POC, consider conserving battery power by turning off unnecessary features, such as alarms or backlights.
  • Oxygen Concentration Settings – Different POC models offer adjustable oxygen concentration settings. Set the device to the exact level recommended by your healthcare professional. Periodically check the oxygen concentration to make sure it stays within the specified range.
  • Maintenance and Cleaning: Clean the POC regularly according to the manufacturer’s instructions. This usually involves wiping the outside surfaces with a soft cloth and periodically cleaning or replacing the filters. Maintaining cleanliness helps prevent dust build-up and ensures that the device performs optimally.
  • Portable Oxygen Provider: If you use your POC while traveling or away from a power source, plan ahead and bring plenty of spare batteries, power adapters, and oxygen cannulas or masks. Consider the duration of the hike and make sure you have an adequate oxygen supply to avoid running out of oxygen.
  • Traveling with a POC: If you plan to travel by air, check with your airline beforehand about their policies and guidelines for using portable oxygen concentrators on board. Some airlines have specific requirements, such as carrying a medical certificate or using specific approved POC forms for air travel.
  • Carrying and Carrying: Most POCs come with a carrying case or shoulder strap. Use these accessories to easily carry and move your device. Use caution when handling the POC to avoid dropping or damaging it.
  • Emergency Preparedness: Create an emergency plan in the event of a power outage or other unexpected situation. Keep your healthcare provider’s contact information handy and keep a backup source of oxygen (such as tanks) for emergencies.

Types of Portable Oxygen Concentrators & Their Features

Portable oxygen concentrators (POCs) are medical devices that provide a concentrated flow of oxygen to people with respiratory conditions. It is designed to be lightweight, compact and easy to transport, allowing users to maintain their mobility and quality of life. Here are some common types of portable oxygen concentrators and their characteristics:

Continuous Flow Portable Oxygen Concentrator:

These POC points provide a continuous flow of oxygen regardless of the user’s breathing pattern.

It is suitable for people who need a continuous supply of oxygen, even during inhalation and exhalation.

Continuous flow continuous flow points are often used for more severe respiratory conditions or higher oxygen demands.

Portable Pulse Dose Oxygen Concentrators:

Pulse dose pulses deliver oxygen in short bursts or pulses synchronized with the user’s inhalation.

These devices detect the user’s breathing pattern and release oxygen only when it is detected.

It is more efficient and conserves oxygen, making it suitable for people who need less oxygen.

Combined portable oxygen concentrators:

Hybrid POCs provide continuous flow and pulse dose patterns, providing flexibility for different oxygen needs.

Users can switch between continuous flow and pulse dose settings based on their activity level or oxygen requirements at different times.

Hybrid POCs are highly versatile, accommodating a wide range of respiratory conditions and oxygen needs.

Common features of portable oxygen concentrators include:


POCs are designed to be lightweight and portable, allowing users to easily carry them around during daily activities.

They are usually small in size and may include bags or backpacks for convenience.

battery duration:

POCs rely on built-in batteries to operate without the need for external power sources.

Battery life varies between different models, from a few hours to several hours of continuous use.

Some POCs offer extended battery options or the ability to change batteries for an uninterrupted oxygen supply.

Oxygen delivery settings:

POCs often have adjustable oxygen flow settings to suit individual needs.

Users can adjust the oxygen concentration and flow rate according to their specific requirements.

oxygen concentration:

POCs provide a certain level of oxygen concentration, usually measured as a percentage of pure oxygen.

Most POCs present oxygen concentrations between 87% and 95%, depending on the model.

noise level:

POCs aim to operate quietly to minimize disruption and ensure user comfort.

Noise levels can vary between different models, and some feature noise reduction technologies.

user interface:

POC devices often have user-friendly interfaces, including LCD screens, buttons, and simple controls for ease of operation and monitoring.

It is important to consult with a healthcare professional to determine the most appropriate portable oxygen concentrator based on a person’s specific needs, lifestyle, and respiratory condition.