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(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.Evaluation summary: visual and dimensional inspection was performed on the returned device.Difficulty positioning through an introducer sheath and stent damage was observed.Additionally, the proximal end of the stent implant moved 7mm distal from its original crimp position.The failure to advance was unable to be replicated as it was based on case circumstances.The failure to advance, resistance and stent damage was likely due to anatomical conditions.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.The investigation determined that the reported difficulties were due to case circumstances.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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