(b)(4).Evaluation summary: visual, dimensional and functional inspection was performed on the returned device.The dislodged stent was confirmed.The failure to advance and resistance was unable to be replicated as it was based on case circumstances.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 of the reported revealed no other incidents.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.The investigation determined that the reported difficulties were due to case circumstances.
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