The device was intended to be used during treatment and was not returned for evaluation.The serial number was not provided for a dhr review.However, all lots distributed from the first inspection up until the complaint occurrence were reviewed and found no product issues related to the reported event.Therefore, the device met manufacturing specifications.A complaint history review was performed and found reports of the issue.This issue will continue to be monitored.A relationship between the device and reported event has not been established.A factor that could have contributed to the reported event could have been the internal battery of the ups was defective.However, without the actual device being evaluated, the issue could not be confirmed.The root cause of the reported event could not be determined.No corrective action or containment is recommended at this time.If the device is returned, the complaint will be re-investigated at that time.
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