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(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.(b)(4).The device was not returned for analysis.The investigation was unable to determine a conclusive cause for the reported stent dislodgement.Based on the information reviewed, there is no indication of a product quality issue with respect to the design, manufacture, or labeling of the 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 similar incidents reported from this lot.It should be noted the xience xpedition everolimus eluting coronary stent system instructions for use states: prior to using the xience xpedition everolimus eluting coronary stent system, carefully remove the system from the package and inspect for bends, kinks, and other damage.Verify that the stent does not extend beyond the radiopaque balloon markers.Do not use if any defects are noted.Based on the information reviewed, there is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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