(b)(4): during processing of this complaint, attempts were made to obtain complete event, patient and device information.(b)(4).There was no reported device malfunction, and the product was not returned.A review of the lot history record revealed no non-conformances or exceptions that would have contributed to the reported event.The reported patient effect of thrombosis is a known observed and potential patient effect as listed in the xact carotid stent system instruction for use.Although a conclusive cause for the reported patient effects and the relationship to the product, if any, cannot be determined, there is no indication of a product quality issue with respect to manufacture, design or labeling.
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It was reported that the patient underwent a procedure to treat a target lesion in the left internal carotid artery.An embolic protection filter was deployed at the target site and pre-dilatation was performed.The 9 x 7 x 40 mm xact stent was deployed at the target lesion without difficulty.No post-dilatation was performed.Post deployment, no flow was noted beyond the stent, although angiography noted that the stent was open.10 mg of tissue plasminogen activator (tpa) was introduced into the vessel.Aspiration was performed using an aspiration catheter; however, no thrombus was noted, possibly due to tpa administration.Flow was restored and the embolic protection filter was removed without issue.Patient is doing well post procedure with no further complications.No additional information was provided.
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