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The unidentified microcatheter and the rotating hemostatic valve (rhv) were not returned.Concerning cleanliness only, the microcoil system was returned in almost pristine condition.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.As viewed through the returned packaging, unreported damage of the coil being stretched, detached, and protruding through the introducer sheath was found.Located 20.0 centimeters off the distal tip of the green introducer, the proximal end of the coil and the distal section of the device positioning unit (dpu) were found protruding through the introducer sheath.There is no mechanical sheath at the protrusion site.The proximal section of the detached coil was stretched.The coil has severe compression and buckling damage at the protrusion site.The coil was mechanically detached.The remainder of the coil is undamaged.No manufacturing defects were found.The circumstances of how and when all the unreported damage of the coils stretching and buckling damage, the unreported detachment, and the unreported protrusion of the coil and the dpu though the sheath cannot be determined as it was reported that, ¿.When the device was removed from the patient there were no damages on any part of the device.¿ conclusion: the complaint of the coils resistance inside the unidentified and non-returned microcatheter is not confirmed.While the root cause of the coils resistance inside the microcatheter cannot be determined, the evidence highly suggests that the most likely contributing factor to the coils resistance inside the microcatheter appears to be due to distal interference of an unknown source and location.This distal interference may have caused the coil to compress and buckle causing the coil to stretch through the skive and for the dpu to also protrude through the introducer sheath which may have caused the unintended mechanical coil detachment.In addition, without the identification or the return of the unknown microcatheter and the rhv used in the procedure, it cannot be determined if these components contributed to the complaint event.Dhr: a review of the manufacturing documentation associated with this lot (c37635) presented no issues during the manufacturing or inspection process that can be related to the reported complaint.Although the circumstances of the damages couldn¿t be conclusively determined the cause of the issues appears to be related to distal interference.Additionally, review of the manufacturing documentation revealed no issues that can be related to the complaint.Therefore no additional corrective action will be taken at this time.
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