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Visual analysis was performed on the returned device.The reported activation failure, and mechanical jam were confirmed.Additionally, it was noted that the stent implant was exposed 5mm from the distal end of the sheath.The retractable sheath was torn sporadically proximal to 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 incidents.The investigation was unable to determine a cause for the reported deployment difficulty and removal difficulty.Based on the reported information, it may be possible that the anatomical conditions induced the distal shaft sheath damage as noted on the returned unit during the insertion process or during the activation, causing partial deployment and the inability to release the stent from the delivery system; however, this could not be confirmed.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the devicena.
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