What is a battery powered portable oxygen concentrator

Portable oxygen concentrator is a high-cost product with high technical requirements. A truly portable oxygen concentrator must meet the following four key indicators:

1. Whether the oxygen concentration is ≥90%

Only when the oxygen concentration reaches 90%, and it can reach 90% in all gears, can it be used as a medical-grade device. In some health care machines, the oxygen concentration will be below 50%.

2. Whether it is pulse oxygen supply

In order to ensure that users can absorb enough oxygen, some home oxygen generators often use atmospheric continuous oxygen supply. The disadvantage of this oxygen supply method is that it produces a lot of waste. From the analysis of respiratory physiology, only 0.7s of the 4s in the normal breathing cycle is inhalation. Pulse oxygen supply refers to the use of pulses, which only supplies oxygen in the front part of the inhalation, and does not provide oxygen in the latter part of the inhalation and exhalation. This saves oxygen and reduces waste. The airflow velocity in the first part of inspiration is small, and the inhalation volume is small at the same time. If pulsed oxygen supply is used, high-concentration oxygen is input at high speed in the front part of breathing, and mixed with a small amount of air in the front part of inspiration, it can still ensure that a high concentration of oxygen-enriched gas enters the alveolar sac, which is different from the functional residual capacity in the lung (about 2500ml ) mixing, the oxygen partial pressure in the alveolar gas increases by several mmHg instantaneously, and the exchange rate increases sharply with the increase of the oxygen pressure difference between the alveolar gas and the blood, so that the fresh gas enters the lungs within 10ms to complete the mixing , most of the oxygen is exchanged in 0.3s, which can realize the throttling of oxygen supply in a short time, and ensure the oxygen absorption function while reducing the oxygen production.

Pulse oxygen supply can increase the oxygen utilization rate to more than 95%, so that the small volume oxygen generator can achieve the equivalent of 3L and 5L continuous oxygen supply oxygen generator. The real portable oxygen generators at home and abroad are all pulse oxygen supply.

3. Whether the size small enough and the weight light enough

Portability is the need to be easy to carry around. Carrying a heavy oxygen generator is a burden and will increase the consumption of oxygen. So a good portable oxygen concentrator must be light enough. Portable oxygen concentrators generally weigh less than 3 kg.

4. Whether it supports the battery life and car charging

Portable oxygen concentrators need to be able to be used when you carry them around, so they must be battery powered.

Car charging enhances the application scenarios of portable oxygen concentrators, and extends standby and battery life to a certain extent.