The device was returned for analysis.The reported material separation was able to be confirmed.The reported difficult to remove was unable to be replicated in a testing environment as it was based on operational circumstances.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 circumstances of the procedure and deviation of the instructions for use as it is likely that prior to removal the thumb slide was not fully retracted to the starting position and the system lock and deployment lock were not in the locked position; thus during removal the tip inadvertently got stuck on the deployed stent strut resulting in the reported difficult to remove.Manipulation of the compromised device ultimately resulted in the reported tip separation/noted tip jacket and inner member separation.As reported, the nosecone was unable to be removed from the location.The nosecone remains in the peroneal artery; however, the artery was confirmed to be patent.Reportedly, during removal under fluoroscopy the red levers were not locked before the catheter was being pulled out.It should be noted that the supera peripheral stent system instructions for use (ifu) states: following confirmed implantation of the supera stent, retract the thumb slide in a single motion to the starting position on the handle and rotate the system lock and deployment lock into the locked position, in line with the thumb slide.The deviation of the ifu appears to have possibly contributed to the reported difficulties.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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It was reported that the procedure was to treat the popliteal and distal femoral artery (sfa) via a direct stick to the popliteal through a bypass graft.The vessel diameter was 4-4.5mm, and the atherectomy was not used.During preparation of a 4.5x40mm supera self expanding stent (sses) the nosecone appearance did not like how it looked therefore was not used in the patient.Another 4.5x60mm supera sses was prepared, and the vessel was prepared with a balloon dilatation.The stent was deployed; and during removal under fluoroscopy, the red levers were not locked before the catheter was being pulled out, the nosecone got stuck on the stent strut and then detached.The nosecone was unable to be removed from the location.The delivery system was removed under fluoroscopy.The nosecone remains in the peroneal artery; however, the artery was confirmed to be patent.There were no reported adverse patient sequela.No additional information was provided.Returned device analysis of the 4.5x40 supera sess identified a separated tip which was not returned.The account stated it was likely discarded.
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