(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.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 similar incidents from this lot.The investigation determined the reported difficulties appear to be related to circumstances of the procedure as it is likely the device interacted with the guiding catheter during advancement causing the reported difficulty to position and subsequent material deformation (stent flare).The device was removed and interacted with the guiding catheter during retraction causing the reported difficulty to remove.Based on the information reviewed, there is no indication of a product quality issue with respect to manufacture, design or labeling of the device.
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It was reported that the procedure was to treat a mildly tortuous, mildly calcified, 75% stenosed concentric lesion in the mid left anterior descending (lad) coronary artery.Pre-dilatation was performed with a 2.5x15 mm non-abbott device.A 2.5x38 mm xience alpine stent delivery system (sds) was advanced; however, resistance was noted with a 6 fr non-abbott guiding catheter before passing the insertion site of the vessel.The sds was removed independently from the patient anatomy; however, resistance was felt with the guiding catheter.The proximal end stent struts were noted to be flared.A new same size xience alpine sds was advanced using the same non-abbott guiding catheter to successfully complete the procedure.There was no reported adverse patient effects or a clinically significant delay in the procedure.No additional information was provided.
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