Hydrogen-Oxygen Generator With Nebulizer for Adjuvant Treatment of COVID-19 Positive Patients

This is a prospective, multicenter, randomized, controlled, superiority clinical trial. It is expected that the test group would have better effectiveness than the control group in the primary evaluation indicator (time to negative viral nucleic acid detection from the start of study treatment). The test group will use the investigational medical device Hydrogen-Oxygen Generator with Nebulizer (Shanghai Asclepius Meditec Co., Ltd.) + basic treatment (the investigator provides corresponding symptomatic support treatment based on the condition of the patients), and the control group will use the hospital routine oxygen supply equipment (wall oxygen or cylinder oxygen) + basic treatment, to evaluate the effectiveness and safety of the investigational medical device Hydrogen-Oxygen Generator with Nebulizer for adjuvant treatment of COVID-19 patients.