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This is final mdr report being submitted for this complaint with associated mfr# 2954740-2016-00324.Product returned for investigation: limited information was received.The unidentified detachment control box (dcb) and the unknown connecting cable were not returned.The unidentified micro-catheter was not returned.Concerning cleanliness only, the microcoil system was returned in almost pristine condition except for under the dpu¿s distal tip of the outer sheath.The system was either not used or was cleaned before being returned which may have produced further damage.It is also unknown if the device was improperly handled for returned packaging or was further manipulated and/or inspected post-procedurally.In addition, any trace or other evidence that may have been complaint related may have been altered or removed prior to being returned due to post-procedural handling, cleaning, and packaging.All location and measurement callouts are approximate and for reference only.The detachment fiber did not receive heat and melt.The device positioning unit (dpu) passed electrical testing with resistance at 52.0 ohms (range 48.5/56.0) and the test enpower and cable systems ready green light illuminated (micrusphere ifu).The coil detached on the first detachment cycle.Post-detachment inspection found that the enpower systems ready green light remained illuminated and the resistance passed at 52.3 ohms.The field complaint of the coil¿s non-detachment could not be duplicated.Post-detachment inspection found that the detachment fiber received heat and melted as designed.No manufacturing defects were found.The complaint of the green systems ready light not illuminating could not be confirmed.The dpu passed electrical testing with the dcb¿s systems ready green light illuminating and the coil was detached on the first detachment cycle, therefore the root cause of the dcb system ready green light not illuminating cannot be determined.It was stated that a pre-deployment electrical test was not completed.If the pre-deployment electrical test was not completed, then for optimum product performance and to prevent potential complications, the instructions for use (ifu) recommends, ¿verify the functionality of the microcoil delivery system before proceeding with microcoil placement.This needs to be done with the microcoil still in the hoop.To verify proper dcb and microcoil functionality a connecting cable and microcoil must be connected to the dcb unit.After verification of the dcb and connecting cable, turn off power to the dcb and disconnect the connecting cable from the microcoil until the microcoil is ready to be detached.Please refer to the detachment control box instructions for use section, located near the end of this document, before proceeding.¿ in addition, without the return of the complete detachment system and the unidentified microcatheter used in the procedure, it cannot be determined if these components contributed to the complaint event.A review of the manufacturing documentation associated with this lot presented no issues during the manufacturing or inspection process that can be related to the reported complaint.Based on the information and analysis, the event was not confirmed.The returned product passed testing and a review of the manufacturing documentation associated with this lot presented no issues during the manufacturing or inspection process that can be related to the reported complaint.Therefore, no corrective actions will be taken at this time.
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