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Balt usa reference: #(b)(4).The returned device was inspected in our quality laboratory.During our analysis: - we observed the implant coil was not included with the device return.- we observed the body coil to be stretched through out its length.- we observed no sign of a detachment cycle being ran.- we observed no visual damage to the detachment zone with the pet jacket, lead wires and solder joints intact.- we observed multiple major kinks along the hypotube.- we observed the microcatheter was not returned.- we observed the distal tip of the sr thread is opaque in color - indicating the thread endured an overload in tensile stress.Root cause of the reported issue can likely be attributed to an overload of tensile stress exerted on the implant coil.Upon device return, we observed the body coil to be stretched through out its length.Moreover, we noted the detachment zone showed no visual signs of a detachment cycle being ran and the implant coil was not returned.To further analyze the unit, the body coil was reveal the tip of the sr thread which showed that the distal tip is opaque in color, indicating the thread endured an overload in tensile stress.It is possible if the implant coil were to have become damaged during attempts to load the coil system into the microcatheter, this could have led to the implant coil encountering excessive friction and ultimately lead to the implant coil becoming detached within the introducer sheath.Without the return of the implant coil its exact condition is unknown, therefore further analysis of the implant coil could not be performed.It is indicated in the lhr that the unit underwent 100% inspection which verifies that the implant was free of damage at the point of final inspection.Review of the lot history records did not reveal any in-process or lot-specific issue that could account for the observation.One additional complaint against lot number f251200836 has been made for the same issue.Comprehensive analysis of this failure mode has remained subject to monitoring for any unacceptable increase in trend.The submission of this report or related information to the fda, and its release by fda, does not reflect a conclusion by the party submitting this report of the fda that the report or related information is an admission that the manufacturer, their employees, or the device caused or contributed to the reportable event.
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