The device history record review confirms that the device met all material, assembly and performance specifications.The device was returned within the introducer sheath along with the microcatheter used in the procedure.Visual and microscopic inspection of the returned target device revealed that the proximal contact and delivery wire were kinked, likely due to handling.The suture was found to be damaged and the main coil was stretched and broken.The detachment zone was inspected and it was noted that the coil did not detach from the delivery wire; the coil broke below the detachment zone, and the remainder part of the coil was not returned or found in the microcatheter returned.A significant amount of blood was noted within the lumen of the microcatheter, which is consistent with insufficient flush maintained during the procedure; however, this could not be determined as the user indicated that continuous flush was maintained.Based on the information available, it is possible that the coil jammed in the microcatheter and a removal attempt caused the coil to stretch and break.Therefore, an assignable cause of procedural factors was assigned.
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