The stent remains implanted.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 similar incidents from this lot.The investigation determined the reported difficulties appear to be related to circumstances of the procedure as it is likely that during removal of the filter interaction with the retrieval catheter resulted in the reported migration and device damaged by another device (dislodged the deployed stent with the filter wire retrieval device).There is no indication of a product quality issue with respect to manufacture, design or labeling.The 4.0x26mm graftmaster stent system referenced is filed under a separate medwatch report number.
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It was reported that the procedure was performed to treat a lesion in the saphenous vein graft.During use of an unspecified device, a perforation occurred.The 4.0 x 26 mm graftmaster stent delivery system was removed from the packaging for device preparation; however, the stent dislodged from the delivery system.The device was not used and there was no patient involvement.The procedure continued.An unspecified embolic protection filter was placed.The 4.0 x 16 mm graftmaster stent was then advanced into the patient anatomy.The stent was deployed without issue, sealing the perforation.However, during removal of the filter, the retrieval catheter interacted with the implanted graftmaster stent, moving the stent out of position, so that it no longer fully covered the perforation.An additional graftmaster stent, a 4.5 x 26 mm, was then deployed, sealing the perforation and anchoring the 4.0 x 16 mm graftmaster stent.The perforation was sealed and there was no adverse patient effect.There was no clinically significant delay.No additional information was provided.
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