This supplemental report was submitted to provide additional information to mdr# 8010047-2020-03457.The original equipment manufacturer (oem), omsc, performed a device history record review and no abnormalities were noted.No device was returned to the oem, however, an investigation was completed by the oem and determined that there was no manufacturing, material or processing related cause for this failure mode.The potential root cause has been determined to be due to leakage testing process not being conducted at the facility.According to the instruction manual, it is stated that the leakage testing must be performed before use.For the above, it is possible that the leakage testing could not have been done in the facility by human errors.After precleaning, perform a leakage test on the endoscope to ensure that it is waterproof by using the leakage tester mb-155 or wa23070a.Equipment needed prepare the following equipment.When performing a leakage test using mb-155, prepare the following equipment.Do not use a damaged or leaking endoscope.Use of a damaged or leaking endoscope may pose an infection control risk to the patient and operators.Never connect or disconnect the leakage tester¿s connector cap while immersed.Doing so could allow water to enter the endoscope and equipment damage can result.Personal protective equipment, such as eyewear, mask, moisture-resistant clothing, and chemical-resistant gloves.Basins that are at least 40 cm by 40 cm (16¿ by 16¿) in size and deep enough to completely immerse the endoscope.Clean water.Leakage tester.Do not use a damaged or leaking endoscope.Use of a damaged or leaking endoscope may pose an infection control risk to the patient and operators.
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