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(b)(4).Internal file number - (b)(4): during processing of this complaint, attempts were made to obtain complete event, patient and device information.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 could not determine a conclusive cause for the reported device operates differently (failure to seal).Based on the information reviewed, there is no indication of a product quality issue with respect to the design, manufacture or labeling of the device.The other two graftmaster stents referenced are filed under separate medwatch reports.
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It was reported that on (b)(6) 2017, the patient underwent a coronary procedure to treat a target lesion in the saphenous vein graft to the 1st diagonal artery.A perforation occurred.The 2.8 x 16 mm graftmaster stent, the 2.8 x 19 mm graftmaster stent and the 4.0 x 26 mm graftmaster stent were implanted in overlapping fashion.It was noted that the perforation did not seal.It was thought that the perforation may have been larger than initially anticipated; however, it is not known why the perforation was not sealed.A coil was placed to seal the perforation.No additional information was provided.
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