(b)(4).Internal file number - (b)(4): during processing of this complaint, attempts were made to obtain complete event, patient and device information.Evaluation summary: visual, dimensional and functional inspections were performed on the returned device.The reported failure to advance and device operated differently (lesion would not fully dilate) could not be replicated in a testing environment as it was based on operational circumstances.The outer member and inner member was stretched and wrinkled proximal to proximal seal likely due to manipulation during attempts to advance the device.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history identified no other similar incidents from this lot.The investigation determined that the reported difficulties appear to be related to circumstances of the procedure.There is no indication of a product quality issue with respects to the design, manufacture, or labeling of the device.
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