The date of event is unknown.The date received by the manufacturer is used.The medical device expiration date is unknown as the lot number is unknown.(b)(4).(b)(6).The device manufacture date is unknown as the lot number is unknown.Device evaluation: results- a sample is not available for investigation.A review of the device history record cannot be completed as the lot number was not provided for this incident.Conclusion- without a sample, an absolute root cause for this incident cannot be determined.If further information is received after this time, a supplemental report will be filed.
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