1. Whether it is a medical grade or household grade oxygen concentrator, it is necessary to have a medical device qualification certificate to see if there is a medical device certification. Therefore, when purchasing products, it is important to check for this certificate.
2. When choosing an oxygen concentrator, it is important to pay attention to the stable oxygen concentration of the concentrator, which is a key factor in distinguishing between good and bad. According to the regulatory requirements of the China Food and Drug Administration for oxygen concentrator products, the oxygen concentration of the oxygen concentrator needs to be maintained at 90% or above to be considered a qualified product.
3. Pay attention to the oxygen stability of the oxygen concentrator. When it is first purchased, the oxygen concentration is relatively stable and can reach over 90%. However, after a period of use, the oxygen concentration will decrease. Some oxygen concentrators have higher oxygen concentration in the first few hours of use, but the oxygen concentration decreases in the following hours. For patients with chronic obstructive pulmonary disease, they need to take oxygen for a long time every day, and using oxygen concentrators with unstable oxygen concentration will greatly reduce the treatment effect.
4. Pay attention to precise flow rate. In addition, when selecting an oxygen concentrator, it is also necessary to pay attention to the precise flow rate of the oxygen concentrator to ensure that the output value of the oxygen concentrator does not deviate, otherwise it will affect the use effect.
