Infection Control for Ventilators in the Battle against COVID-19
The Current Situation and Challenge of COVID-19
Over 170,000 people have been diagnosed with COVID-19. The number of confirmed cases outside the Chinese mainland has already reached over 90,000. On March 11th, WHO officially declared COVID-19 a pandemic.
No doubt that mechanical ventilation is one of the most effective therapy strategies for those patients that develop severe respiratory failure. However, if handling and disinfection are not done properly, the ventilators and the associated accessories will act as a major source of contamination.
Statistics from the China Centers for Disease Control and Prevention (China CDC) and other media sources indicate that thousands of medical staff worldwide who work with COVID-19 have got infected. Reports from many countries revealed that the number of infected medical staff outside China has reached over a few thousand. The four main contributors to infections are: occupational exposure, device-associated infections, improper terminal infection and aerosol infections.
Concensus of Infection Control for Ventilators
As mentioned previously, one of the major sources of potential infection is from secretions and aersol dispersion from the patient. Therefore, it is vital to handle the ventilator properly before, during and after the ventilation procedures.
As suggested in Expert Concensus of Mechanical Ventilation Infection Control for Novel Coronavirus from China  and the Clinical management of severe acute respiratory infection when novel coronavirus (COVID-19) infection by WHO , the following preventive measures should be taken:
Infection Control Management for Mechanical Ventilators
Safeguard for Medical Personnel and Patients
The SV Series ventilator integrates with high-flow oxygen therapy, non-invasive ventilation and invasive ventilation into one device, making it perfectly reliable for satisfying the changing needs of patients in different acuity levels. It also eliminates frequent disconnection of tubing, which is suspected to be the major potential source of contamination. The clinicans can use one ventilator with the same tubing throughout different acuity stages for one patient, hence reducing the chance of cross-infections.
Avoid aerosol infection
WHO believes that the use of non-invasive positive pressure ventilation (NPPV) with vented mask may be one of the main sources for aerosol transmission in the hospital. The vented mask does not have dedicated filters to process the contaminated gas, so that the gas is directely released to the environment.
Mindray SV Series ventilators use dual-limb circuit design and non-vented mask for non-invasive ventilation that can highly reduce the amount of aerosol released to the environment during ventilation.
Reliable hardware design: detachable and autoclavable ins-/expiratory valves
Intergrated with the HEPA Filter
Methods for Cleaning and Disinfection
 Expert Concensus of Mechanical Ventilation Infection Control for Novel Coronavirus ,Chinese Journal of Respiratory and Critical Care Medicine, Mar. 2020, Vol. 19, No. 2.
 WHO: Clinical management of severe acute respiratory infection when Novel coronavirus (2019-nCoV) infection is suspected: Interim Guidance.