(b)(4).Evaluation summary: visual, dimensional and functional inspections were performed on the returned device.The reported difficulty removing the device from the guiding catheter was confirmed.The reported winged balloon could not be replicated in a testing environment due to the condition of the returned 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 incidents from this lot.The investigation determined the reported difficulties appear to be related to operational context.There is no indication of a product quality issue with respects to the design, manufacture, or labeling of the device.
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