The device was not returned for evaluation.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 complaints reported from this lot.Based on the information provided, a definitive cause for the migration could not be determined.It may be possible that the migration was related to anatomical conditions or the vessel diameter larger than the 4.5mm diameter of the supera stent; however, this could not be confirmed.The foreign body in patient was related 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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It was reported that the procedure was to treat a mildly tortuous, heavily calcified superficial femoral artery (sfa).Pre-dilatation was performed with a 5mm balloon.A 4.5x40mm supera stent was advanced to the lesion and once deployed a control injection was made, when it was noted that the stent began moving down and stopped moving in the mid/proximal portion of the popliteal artery (non-target lesion).A second supera stent was implanted in the sfa where it was long enough that it overlapped with the migrated stent in the popliteal, however, it was confirmed that there was nothing externally done to treat the migrated stent.There was no adverse patient sequela and no clinically significant delay.No additional information was provided.
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