This supplemental report is being submitted to provide the results of the legal manufacturer's final investigation.Additional information added to field.A review of the device history record found no deviations that could have caused or contributed to the reported issue.It has been over 2 years since the subject device was manufactured.Based on the results of the investigation, it is likely falling off of component parts of distal end led to malfunction.The suggested event may have occurred because distal end was squeezed with strong force.Distal end may have been squeezed by automatic endoscope reprocessor which owned at the facility.Based on the results of the investigation, it is likely that the parts of distal end, including image sensor unit were missing by fallen distal end, which caused no image.The event which was "no image" can be prevented by following the instructions for use which state: important information ¿ please read before use ¦precautions: caution turn the video system center on only when the endoscope connector is connected to the light source.In particular, confirm that the video system center is off before connecting or disconnecting the endoscope connector.Failure to do so can result in equipment damage, including destruction of the image sensor.¦precautions for disappeared or frozen endoscopic image: warning follow the precautions given below.Otherwise, the endoscopic image may disappear unexpectedly or the frozen image may not be restored during the examination.3.8 inspection of the endoscopic system ¦inspection of the endoscopic image confirm that the wli and nbi endoscopic images (except bf-mp290f) are normal.5.1 troubleshooting if any irregularity is observed during the inspection described in chapter 3, ¿preparation and inspection¿, do not use the endoscope and solve the problem as described in section 5.2,¿troubleshooting guide¿.If the problem still cannot be resolved, send the endoscope to olympus for repair as described in section 5.4, ¿returning the endoscope for repair¿.Also, should any irregularity be observed while using the endoscope, stop using it immediately and withdraw the endoscope from the patient as described section 5.3, ¿withdrawal of the endoscope with an irregularity¿.Olympus will continue to monitor field performance for this device.
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