Date of event: unknown.The date received by manufacturer has been used for this field.Medical device expiration date: unknown.The customer's address is unknown.(b)(6), usa was determined by the provided phone number.Device manufacture date: unknown.(b)(4).Unknown manufacturer: (b)(4).Investigation summary: since no samples displaying the condition reported are available for examination, we were unable to fully investigate this incident.No root cause can be determined as no samples were received. the lot number is unknown, therefore device history record review (dhr) or quality notification review (qn) could not be performed.We would be very interested in examining product that does not meet your expectations and our quality standards.Should you again experience any problems with our product we would appreciate the opportunity to conduct a thorough analysis.Examination of the product involved may provide clarification as to the cause for the reported failure.We appreciate you taking the time to bring this observation to our attention.Complaints received for this device and reported condition will continue to be tracked and trended.Information will be captured on trend reports and monitored monthly. our business team regularly reviews the collected data for identification of emerging trends.Investigation conclusion: part number and lot number is unknown; a lot history review could not be performed.Root cause description: no root cause can be determined as no samples were received.Rationale: capa is not required at this time.
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