It was reported that after the image was acquired, upon performing pullback with the dragonfly optis imaging catheter, the interventional wire became entangled and knotted up.The dragonfly optis catheter could not be removed by itself and had to be removed together with the guide catheter.Another guide catheter was used, and the vessel had to be re-wired.There was no adverse patient effects and there was no clinically significant delay in the procedure.No additional information was provided.
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Visual and dimensional analysis was performed on the returned device.The reported difficulty removing the catheter was unable to be confirmed due to the device condition; however, there was damage observed which could be attributed to the reported event.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.A query of the complaint handling database for the reported lot was performed and revealed there is no indication of a lot level quality product issue.The investigation determined that the difficulties were likely related to circumstances of the procedure.The stretched guidewire exit port noted on the returned dragonfly catheter, as well as the condition of the returned guidewire, suggests that the guidewire damage was likely the cause of the reported difficulty to remove.The returned condition of the devices suggests that there was resistance encountered during removal, which would cause the guidewire to force itself into the distal edge of the guidewire exit port resulting in the aforementioned stretched guidewire exit port.While the exact cause of the reported withdrawal issue could not be confirmed, it is likely that the patient¿s anatomical condition(s), or more likely the condition of the guidewire being used affected the catheter¿s ability to be withdrawn; however, this could not be confirmed.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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