The device was returned for analysis.The reported material separation was able to be confirmed.The reported activation failure and the reported device dislodged or dislocated - stent were unable to 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.As there was no damage noted to the device during the inspection prior to use, the investigation determined the reported difficulties appear to be related to circumstances of the procedure as it is likely that after stent deployment during device removal the tip inadvertently got caught with the deployed stent resulting in the reported activation/deployment failure.Manipulation of the compromised device during removal resulted in the reported stent dislodgement, the noted flattened/twisted sheath and ultimately resulted in the reported tip separation/noted inner member and tip jacket separations.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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