It was reported that the procedure was to treat a 80% stenosed de novo lesion in the internal carotid artery with heavy calcification and mild tortuosity.The 40x9-7mm x-act self-expanding stent system (sess) was advanced to the target lesion; however, the physician was unable to see the stent under fluoroscopy.Therefore, the sess was removed from the patient.There was no adverse patient effect and no clinically significant delay in the procedure.Another unspecified stent was used to complete the procedure.No additional information was provided.
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The device was returned for analysis.The reported difficult or delayed positioning visibility was unable to be confirmed.Fluoroscopy analysis showed that the markers were visible and the stent remained inside the sheath in between the markers.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.As the reported difficulty (unable to see stent under fluoroscopy) was unable to be confirmed during return analysis, the investigation determined the reported difficulties appear to be related to circumstances of the procedure as it is likely that the heavily calcified, mild torturous and 80% stenosed anatomy contributed to the reported difficulties being unable to see stent under fluoroscopy.There is no indication of a product quality issue with respect to manufacture, design or labeling.Na.
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