This report is being supplemented to provide additional information based on the legal manufacturer's final investigation.A review of the device history record found no deviations that could have caused or contributed to the reported issue.Based on the results of the investigation, it is likely blood or body fluid invaded the inside of the sheath from damaged part of the ultrasonic transducer because appropriate reprocessing was not conducted.The event can be prevented by following the instructions for use which state: "after using the instruments, reprocess and store them according to the instructions in chapter 5, ¿reprocessing: general policy¿ and chapter 8, ¿storage and disposal¿.Improper and/or incomplete reprocessing or storage can present an infection-control risk, cause equipment damage, or reduce performance." olympus will continue to monitor field performance for this device.
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