1. From the classification of medical device management categories, non-invasive ventilators belong to the second category of medical devices, and invasive ventilators belong to the third category of medical devices (the highest level of the third category requires the SFDA to issue a certificate); the simplest way to distinguish is to see medical Device registration certificate, whether it is Class III or Class II;

2. For patients, the tracheal intubation (or tracheotomy) ventilation method is invasive, and the mask ventilation method is non-invasive;

3. All invasive ventilators can be connected to high-pressure oxygen; (the advantage is that high pressure, high flow and high oxygen concentration can be used to meet the needs of severe patients; disadvantages: it must be driven by oxygen, and the oxygen consumption is large;)

4. The invasive ventilator can also be used with a non-invasive ventilator mask, but generally the oxygen consumption is relatively large and the oxygen concentration is high, which cannot completely replace the non-invasive ventilator;


5. Imported high-end invasive ventilators have a built-in turbine, which can also be connected to high-pressure oxygen, which can achieve invasive and non-invasive integration, but the price is relatively high. Now the mainstream first-aid ventilators on the market are still driven by oxygen (including imported).

6. Therefore, invasive emergency ventilator can be divided into: with built-in turbine (only imported high-end machines have) and without turbine (mainstream is such)

7. The non-invasive ventilator has a built-in turbine and can be used without an oxygen source; (disadvantages: only through indirect low-pressure low-flow oxygen in the mask or breathing line, the pressure and oxygen flow are too low, and the critical patient oxygen does not enter the patient Lungs will cause low blood oxygen;)

8. When the platform valve is added in the middle of the non-invasive ventilator pipeline, it is used as an invasive ventilator. For invasive patients with low pressure requirements, low oxygen concentration requirements, and low flow requirements, some invasive patients can be used for a short time, but serious Patients, patients with high requirements are not easy to use;

9. Non-invasive ventilator is also divided into: single level, double level, etc.

Post time: Jul-14-2020