It was reported that during treatment of an acute sah, acom aneurysm with balloon protection, the second coil was positioned; however, the microcatheter position was unstable and lost this position.It was decided to withdraw the coil and upon removal, it was observed that there was no coil attached to the delivery pusher.The case was completed with one coil in the aneurysm.The microcatheter was checked; however, no coil was inside the catheter or the rhv.There was no patient injury or intervention reported.Additional information indicated that the device was not inspected prior to use.The coil was not visually observed to be attached prior to advancement in the catheter.The coil system was not pretested with the detachment controller prior to use.
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