It was reported that during middle cerebral artery ruptured aneurysm coiling procedure, the physician noticed that the subject coil loop was obstructing flow into the vessel prior to the deployment.Physician decided to pull the subject coil out and resheath it.While withdrawing, the subject coil stretched, broke and detached prematurely within the microcatheter.The physician pulled the microcatheter and intermediate catheter out.Half of the subject coil was in the aneurysm the other half was outside the aneurysm from middle cerebral artery to cervical internal carotid artery.Physician attempted to retrieve the broken coil using a stent retriever and a micro snare kit, however, failed to do so.Physician decided to leave the broken subject coil inside patient as it was not flow obstructing at the end of the procedure.During the retrieval process some pieces of the broken coil were pulled out of the catheters.Additional medication was given to the patient.
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