This report for non-fatal serious injury/device malfunction has been stored under the covid-19 pandemic in accordance with the guidance published by fda, postmarketing adverse event reporting for medical products and dietary supplements during a pandemic.The subject device was not returned to olympus medical systems corp.(omsc) for evaluation.Omsc could not review the manufacturing history record (dhr) because the lot number was not provided, omsc confirmed with another but the similar device that the reported event.Omsc confirmed that the subject device was opens and close properly without any problems.The exact cause of the reported event could not be conclusively determined.However, there was the possibility that the reported phenomenon might be attributed to the damage of the subject device or the inappropriate user handling.
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