(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.The device is expected to be returned for evaluation.It has not yet been received.A follow up report will be submitted with all relevant information.
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It was reported that during a procedure of the mildly tortuous, moderately calcified, 80% stenosed, de novo, left anterior descending (lad) artery, a 2.5 x 23 mm xience xpedition stent was implanted distally.While advancing the 3.5 x 18 mm xience xpedition stent to the lesion, it became caught and dislodged from the balloon.The stent delivery system (sds) was removed and a 3.0 x 15 mm nc balloon catheter was used to expand the stent at the lesion.There was no reported adverse patient sequela or a clinically significant delay in the procedure.No additional information was provided.
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(b)(4).A visual inspection was performed on the returned device.The reported stent dislodgement was confirmed.The reported physical resistance could not be tested as it was based on operational circumstances.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 and subsequent treatment appear to be related to circumstances of the procedure.Based on the information reviewed and analysis of the returned device, there is no indication of a product quality issue with respect to the design, manufacture or labeling of the device.
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