It was reported that the procedure was to treat an unspecified lesion.Four unspecified stents were implanted during the procedure.Then a 2.25x12mm xience xpedition stent delivery system was advanced to the lesion but via angiography, before deployment attempts, the physician could not see the stent.The device was removed and it was noted that the stent was not on the balloon.The stent implant had been found on the sterile table.It is suspected that the stent dislodged during preparation phase.Two (2.25x8mm) xience stents were used to successfully completed the procedure.There were no adverse patient effects and no clinically significant delay in the procedure.No additional information was provided.
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A visual inspection was performed on the returned device.The reported stent dislodgement was confirmed.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 determined the reported stent dislodgement appears to be related to circumstances of the procedure.As the stent delivery system was removed, it was noted that the stent was not on the balloon and that the stent implant had been found on the sterile table.The account suspected that the stent dislodged during preparation phase.It should be noted that the xience xpedition instructions for use specifies to 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.The ifu deviation does not appear to have directly caused or contributed to 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.
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