Visual and functional inspections were performed on the returned device.In this case, the stent was not prematurely deployed or flowered as reported.However, the stent was moved slightly distal within the sheath.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.The investigation was unable to determine a cause for the reported difficulty.The stent was not prematurely deployed or flowered as reported.However, the stent was moved slightly distal within the sheath.Based on the reported information and analysis of the returned unit, it is possible that during removal of the stylet, the tip was inadvertently pulled such that the stent moved distally within the sheath; however, this could not be confirmed.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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