(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.(b)(4).Visual inspection was performed on the returned device.The reported difficulty was confirmed.A review of the lot history record revealed no manufacturing nonconformities that would have contributed to this complaint.Additionally, a review of the complaint history identified no other similar incidents from this lot.The investigation was unable to determine a conclusive cause for the reported complaint.Based on the information reviewed, there is no indication of a product quality issue with respect to the design, manufacture or labeling of the device.Evaluation summary: visual inspection was performed on the returned device.The reported difficulty was confirmed.The investigation was unable to determine a conclusive cause for the reported complaint.A review of the lot history record revealed no manufacturing nonconformities that would have contributed to this complaint.Additionally, a review of the complaint history identified no other similar incidents from this lot.Based on the information reviewed, there is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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