Medical device expiration date: this product does not have an expiration date.Investigation: no samples (including photos) were returned therefore the complaint could not be confirmed and the root cause is undetermined.A review of the device history record revealed no irregularities during the manufacture of the reported lot number.Complaints received for this device and reported condition will continue to be tracked and trended.If samples are received in the future the complaint will be reopened for further investigation.Based on the above, no additional investigation and no capa is required at this time.(b)(4).
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