(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.The device was not returned for analysis.The investigation was unable to determine a conclusive cause for the reported movement of the stent during deployment; however, the difficulties crossing appear to be related to the calcified patient anatomy.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.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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It was reported that the procedure was to treat a de novo lesion located in the distal left anterior descending (lad) artery with moderate tortuosity and mild calcification.A 3.0 x 28 mm xience v rx drug eluting stent (des) was advanced to the lesion and it crossed successfully; however, it was stated that the crossing was difficult when compared to other xience devices.During deployment of the stent implant, the stent implant moved from the intended lesion.Another xience v was deployed, overlapping the initial xience v stent implant, to treat the lesion.There were no adverse patient effects or clinically significant delay in the procedure reported.No additional information was provided.
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