It was reported that the procedure was to treat a lesion in the subclavian artery with 50% stenosis, mild calcification and no tortuosity.The emboshield nav 6 embolic protection system (eps) filter was successfully deployed midway down the left internal mammary artery (lima) via radial approach with an omnilink elite stent placed across the subclavian stenosis via common femoral artery (cfa) access.Upon retrieval, the retrieval catheter could not pass into the ostium to meet the filter as the stent was blocking it.The physician made several attempts to balloon dilate the ostium to pass the catheter, but it couldn¿t avoid the omnilink stent to track into the lima.He also ballooned the implanted omnilink stent to try and drag it backwards to free up the lima access but unsuccessful.The filter was stranded.It was then decided to simply pull the filter back up the lima without the retrieval catheter by pulling back on the barewire.The filter moved without difficulty, and met with the retrieval catheter at the subclavian-lima junction where it collapsed and was withdrawn easily.However, the lima ruptured during angiogram check and a cardiologist and vascular surgical support managed to control the bleeding by using a covered stent bailout to re-line the lima after an hour or so.The physician was not sure what caused the rupture although the repeated ballooning to try to create a path past the omnilink was far from ideal.There was no adverse patient sequela.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 similar incidents.The reported patient effect of perforation is listed in the omnilink elite instruction for use (ifu) as a known potential patient effect associated with the use of a stent in peripheral arteries and / or biliary tree.Based on the reported ¿when we tried to pass the retrieval catheter from the arm down the subclavian and into the lima, it wouldn¿t pass into the ostium to meet the filter as the stent was blocking it.-several attempts to balloon dilate the ostium to pass the catheter, but it wouldn¿t avoid the omnilink tines¿, it is likely the omnilink stent position was not ideal at the ostium exposing the tines inhibiting the advancement of the recovery sheath of the nav 6.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.D4: correction lot# from unknown to 2040442.
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