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(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 did not indicate a lot specific quality issue.The investigation determined that the reported difficulties appear to be related to circumstances of the procedure.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 moderately calcified, heavily tortuous circumflex artery.The 2.25 x 28 xience alpine stent could not cross due to the anatomy.Reportedly, there was resistance during removal of the stent from the guiding catheter.The stent was flared when it was pulled out of the guiding catheter.The procedure was successfully completed with another 2.25 x 28 xience stent.There was no clinically significant delay in procedure and no adverse patient effects.No additional information was provided.
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