(b)(4).Internal file number - (b)(4): during processing of this complaint, attempts were made to obtain complete event, patient and device information.Evaluation summary: a visual and dimensional inspection was performed on the returned device.The reported material deformation was confirmed.The reported failure to advance and difficult to remove from the anatomy could not be tested as it was based on operational circumstances.The reported difficult to remove from the guiding catheter and difficult to position could not be tested due to the condition of the returned device.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 that the reported difficulties appear to be related to circumstances of the procedure, as it is likely the device interacted with the guide catheter in addition to the mildly tortuous, mildly calcified anatomy during advancement, as resistance was noted, resulting in the reported failure to advance and difficult to position.Further manipulation of the sds during advancement/retraction of the device likely contributed to the reported material deformation (flared/mangled struts), ultimately contributing to the reported difficulty in removing the device from the anatomy and guiding catheter.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 performed to treat a lesion in the mid left anterior descending (lad) coronary artery with mild tortuosity and mild calcification.A 3.00x33 mm xience alpine stent delivery system (sds) was advanced with a non- abbott guide catheter with resistance and became stuck proximally to the target lesion.The sds was manipulated but failed to cross the lesion.The sds was removed as a single unit from the patient anatomy with resistance and on removal the stent was noted to be crushed.Resistance during advancement and removal, was reported to be unknown and considered to be related to the anatomy, the guide catheter or other factors.The procedure was successfully completed with a 3.00x28 mm xience alpine sds.There were no adverse patient effects and no clinically significant delay in the procedure.No additional information was provided.
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