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Exemption number e2019001.The device was not returned for evaluation.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 similar incidents.Based on the information provided, a conclusive cause for the reported difficulty could not be determined.It is possible that the distal sheath of the supera delivery system was entrapped or restricted within in the anatomy such that the ratchet was unable to engage the stent properly preventing full deployment; 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 device.
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