The hand-held medical device can check a lot of diseases, holding the device in your hand can show you what diseases you have, but also print, this kind of machine is reliable, what is the science bas

The hand-held medical device can check a lot of diseases, holding the device in your hand can show you what diseases you have, but also print, this kind of machine is reliable, what is the science based on Please check the registration certificate of the medical device to see if it has the scope of application as stated in your question and to determine whether the product is out of date, generally speaking, the registration certificate of the medical device is valid for 4 years. On the other hand, the diagnostic function of non-invasive medical devices is generally based on heart rate, blood pressure, pulse, body temperature, etc. to determine the disease, if you say the medical device does not have a sensor for the detection of the above parameters, it is impossible to diagnose the disease.