At what intervals are medical devices cleaned and sterilized during prolonged use by the same patient?

Hospital specified time. Medical equipment is in contact with the human body, long-term use of the process will accumulate bacteria, viruses and other pathogens, regular cleaning and disinfection can effectively prevent the occurrence of infections, to protect the health of patients, and therefore the same patient long-term use of medical equipment during the time interval of the hospital to clean and disinfect.