The device was not returned for analysis.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 as it is likely that during removal the tip of supera delivery system inadvertently became caught on the deployed stent resulting in the reported difficult to remove and the reported stretched stent.Some of the stent was deployed in healthy tissue resulting in the foreign body in patient.The treatment (manipulation to disengage the tip) appears to be related to the operational context of the procedure.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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