The device history records (dhr) of the device concerned was reviewed: the production lot, to which the device concerned belongs, passed all in-process inspections for every product, and the finished product inspections on representative samples based on sampling plan.No nonconformity or abnormality in the manufacturing processes of the device concerned was found.The actual device was not returned and could not be investigated.We assume the cause of this as follows: the facility has not reported any defects in the product.We determine that it was due to the procedure and/or patient's condition.Since the concomitantly used microcatheter was withdrawn while the coils were not stable into the aneurysm, which caused coil was out and consequent health hazard.However, since health hazards to the patient (thrombosis and hemiplegia) occurred and have not recovered, and the causal relationship between health hazards and the product cannot be completely ruled out, we will submit mdr (30 days).In the instructions for use of i-ed coil (2376-1) , we state the potential of known risk as below; [device failures, adverse events and complications] the following device failures, adverse events and complications may occur during the use of the i-ed coil.However, device failures, adverse events and complications are not limited to those listed below.Immediately take appropriate measures in the event that any abnormality occurs.2.Adverse events.(3) injury to blood vessels or tissues, vessel wall dissection, blood vessel perforation, blood vessel rupture.(5) bleeding, ischemia.(7) stroke, cerebral infarction.
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An aneurysm located in the anterior cerebral artery (a2) under mri; coils treatment.2 coil circles pull out of the aneurysm during the return microcatheter process resulting in thrombosis in these coil circles in the vessel.Anterior cerebral artery occlusion leads to hemiplegia.The coils were not stable into the aneurysm during the coiling process.Therefore, the coils were sucked out by the suction of the microcatheter when the microcatheter was pulled out.On june 1, 2023 additional information: now the patient has regained consciousness.
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