(b)(4).A visual, dimensional, and functional inspection of the device involved in the complaint could not be conducted since the device has not been returned at the time of this report.Thirteen samples were taken from the current production (8884717395) lot # 73j1600663, a quality inspection was performed on the samples, and issue reported "air leakage" was not observed in the current manufacturing process.A device history record review could not be conducted since the lot number for the device involved was not provided.Corrective actions cannot be established as it is necessary to receive the device sample to perform a proper investigation , and confirm the alleged defect.Customer complaint cannot be confirmed.The root cause is unknown at this time.If the device sample becomes available at a later date, this complaint will be updated accordingly.
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