This is a supplemental report to provide additional information.The subject device was not returned to olympus medical systems corp.(omsc) for evaluation.Therefore, the exact cause of the reported event could not be conclusively determined.The manufacturing record was reviewed and found no irregularities.According to the evaluation information from sorc, low light amount of xenon lamp was confirmed.Therefore, if it had been used for about 500 hours, the xenon lamp might have reached its end of life.If it had been used for a short time, an accidental failure might have occurred and temporarily switched to an emergency light.In addition, the parts related to the main lamp lighting, such as converter units, igniter units, and main substrates might have deteriorated over time since the device was delivered more than 11 years ago, and then the xenon lamp temporarily failed to light and switched to an emergency light.
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