A cine was received and reviewed by an abbott vascular clinical specialist.The reviewer concluded that based on the angio films provided, there is not enough evidence to confirm the event.However, it may be reasonable to suggest that the patient¿s coronary anatomy and calcified vessel could have been contributing factors relating to a probable cause of the reported stent malformation.The device was returned for analysis.The reported material deformation was confirmed.There was stretching and bunching sporadically on the inner member and outer member distal to the mid lap seal.All noted device damage is likely due to handling and/or manipulation of the device during the procedure.The reported failure to advance could not be replicated in a testing environment as it was related to operational context of the procedure.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 heavily calcified and chronic totally occluded lesion causing the reported failure to advance and subsequent material deformation.There is no indication of a product quality issue with respect to manufacture, design or labeling.The xience xpedition 48 is currently not commercially available in the u.S.; however, it is similar to a device sold in the u.S.
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