It was reported that the procedure was to treat the internal carotid artery with mild calcification, mild tortuosity, and 80% stenosis.The 6-8x40 mm acculink carotid stent system was advanced to the lesion and deployment was attempted but there was resistance in the delivery system.The stent only partially deployed so it was removed and a non-abbott stent was used to complete the procedure.There were no adverse patient effects and there was no clinically significant delay in the procedure.No additional information was provided.
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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 other incidents from this lot.It is possible that the distal shaft was bent in the mildly calcified, mildly torturous and 80% stenosed anatomy preventing the shaft lumens from moving freely thus resulting in resistance with the slider and difficulty deploying the stent; however, this could not be confirmed.The investigation determined a conclusive cause for the reported difficulties cannot be determined.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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