The investigation of the affected evita v800 with serial no.(b)(6)was based on the reported event and enhanced logfile analysis.Additionally, the device was examined at the manufacturer repair shop in lübeck after an on-site investigation didn't fix the deviations.Based on the results of the examination, it was determined that the device had a loose connection of the printed circuit board (pcb ecd) adapter.This caused a loss of connection of the monitor to the ventilation box.Contrary to what was reported, no reboot of the device could be detected.The ventilation was not interrupted.As a safety feature of the system, the safety software analyzes and checks the proper functioning of the device.If the safety software detects a deviation regarding the display, the system emits an acoustic alarm tone.Ventilation is not affected by a display failure and continues as set.Safety-relevant parameters such as fio2, minute volume or airway pressure are shown in the additional yellow / green oled display, where the user can see the ventilation in progress.During the previous repair on site, the eeprom data was not saved for the pcb, so that the ventilation-box could not correctly recognize the version of the display.The adapter was replaced and the device was tested according to the manufacturer's specifications without any further deviations.The number of similar cases, related to the same root cause, is within the expected range of the respective risk assessment and thus accepted.The event was assessed to be not reportable in accordance to the european meddev 2.12 rev.8 and the medical device regulation (mdr 2017/745).
|