The device history record review confirms that the device met all material, assembly and performance specifications.Visual inspection of the device revealed that the delivery wire was kinked, likely due to handling.The main coil appears to have detached due to a physical break at the detachment zone.The main coil was found to be stretched as well.Functional testing could not be performed due to the damaged condition of the returned coil.The delivery wire was also noted to have been rotated could have led to the reported premature detachment within the microcatheter.Based on the information currently available, it is probable that some procedural factors encountered during the procedure limited the performance of the coil contributing to the reported and observed damages.Therefore, an assignable cause of operational context has been assigned to this investigation.
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