Many device can be applied for Respiratory Problem patients like CPAP, nebulizer, ventilator. And thanks to the advanced technology, if people with low blood oxygen saturation, devices I mentioned above are far away from their needs. Then they need an Oxygen Concentrator to treat as well. Typically, individuals who are suffering from breathing disorders, such as COPD(Chronic Obstructive Pulmonary Disease) need Oxygen Therapy. There are two main forms of COPD:

1. Chronic bronchitis, which involves a long-term cough with mucus
2. Emphysema, which involves damage to the lungs over time

According to American Journal of Respiratory and Critical Care
Medicine, supplemental oxygen is recommended in patients with low oxygen levels
at rest (a partial pressure of oxygen less than 50–55 mmHg or oxygen saturations of
less than 88%). Therefore, they need a device to deliver oxygen to breathe freely.