It was reported that the procedure was performed to treat a lesion with heavy calcification in the right coronary artery (rca).Pre-dilatation was performed.Then a 2.5 x 48mm xience xpedition stent delivery system (sds) was advanced; however, the sds failed to cross the target lesion due to the heavily calcified lesion.Therefore, an extension catheter was used, but the sds could not be advanced with the extension catheter.It was possible that the inside of the extension catheter was deformed.The sds was removed with resistance due to the anatomy.Another unspecified device was used to complete the procedure.There were no adverse patient effects and no clinically significant delay in the procedure.
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Device code 2017: improper or incorrect procedure or method.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 the reported difficulties appear to be related to the operational context of the procedure, as it is likely the device interacted with the heavily calcified anatomy during advancement, as resistance was noted, causing the reported failure to advance.Interaction with the guide catheter during advancement likely contributed to the reported difficult to advance/position, as the physician noted that the inside of the extension catheter may have been deformed.Further interaction with the challenging anatomy during retraction, as resistance was again noted, likely contributed to the reported difficult to remove.It should be noted that the xience xpedition, everolimus eluting coronary stent system instructions for use (ifu) states: an unexpanded stent may be retracted into the guiding catheter one time only.An unexpanded stent should not be reintroduced into the artery once it has been pulled back into the guiding catheter.Subsequent movement in and out through the distal end of the guiding catheter should not be performed, as the stent may be damaged when retracting the undeployed stent back into the guiding catheter.It is unknown if the ifu deviation contributed to the reported event.There is no indication of a product quality issue with respect to the design, manufacture or labeling of the device.Na.
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