The device was not returned for analysis.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 did not indicate a lot specific quality issue.The investigation determined the reported difficulties appear to be related to circumstances of the procedure.Interaction and/or manipulation of the device ultimately resulted in the reported stent dislodgement.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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It was reported that the procedure was to treat a mildly tortuous, heavily calcified de novo mid left anterior descending artery that was 95% stenosed.A 3x33mm xience prime stent was advanced but failed to cross due to anatomy.When pulling back resistance was met with anatomy, and the stent implant dislodged.Unable to retrieve the dislodged stent, another stent was deployed to embed the dislodged stent to the vessel wall.Patient remained stable.There was no clinically significant delay.No additional information was provided.
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