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Due to the automated manufacturing execution system (mes) system there are controls in the manufacturing process to ensure the product met specifications upon release.During visual inspection, the main coil delivery wire was seen to be kinked/bent.The coil delivery wire was seen to be damaged.The coil delivery wire was seen to be broken/fractured.The main coil was seen to be jammed inside the microcatheter.The main coil was seen to be protruding from the microcatheter.Functional inspection was unable to be performed due to damage.The reported event is covered in the device directions for use (dfu).As well, the risk of the reported event is documented in the risk documentation and there are current controls to mitigate the risk of the as reported event.The reported complaint was confirmed based on analysis.The device failed to meet specifications when received for complaint investigation based on the analyzed anomalies noted to the device.It was reported that the subject coil got stuck in the microcatheter due to resistance at the distal end.Additional information provided by the customer indicated that the device was confirmed to be in good condition during preparation/prior to use on the patient and was prepared for use as per the dfu (except continuous flush was not set up and maintained throughout the clinical procedure), the tortuosity of the patient's anatomy was severe, the delivery wire and introducer sheath were taken out together from the dispenser hoop, the tapered distal end of the introducer sheath was firmly seated in the hub of the microcatheter, the rhv was adequately tightened while the introducer sheath was in the hub (not over/under-tightened) and was opened enough to allow passage of the device through without damage, no torque was given where advancing the delivery wire, and the coil was advanced slowly and gently without applying excessive force.The main coil was returned jammed inside a non-stryker microcatheter with the distal end of the coil protruding through the microcatheter tip.Upon visual inspection, the coil delivery wire was noted to be kinked/bent, damaged (unraveled coil winding), and broken/fractured.Although functional testing could not be performed, the damage noted to the delivery wire is indicative of the reported friction.Based on the information provided in the complaint, it is probable that lack of continuous flush during the procedure may have contributed to the reported friction when advancing the subject coil in the microcatheter and resulted in the subsequent damage to the device.Per the device dfu, "in order to achieve optimal performance of the target detachable coil system and to reduce the risk of thromboembolic complications, it is critical that a continuous infusion of appropriate flush solution be maintained between a) the femoral sheath and guide catheter or long sheath, b) the 2-tip microcatheter and guide catheter or long sheath, and c) the 2-tip microcatheter and guidewire and delivery wire.Continuous flush also reduces the potential for thrombus formation on, and crystallization of infuscate around, the detachment zone of the target detachable coil".An assignable cause of use error will be assigned to the as reported event of 'coil in catheter friction' as well as the as analyzed events of 'coil delivery wire kinked/bent', 'coil delivery wire damaged', 'coil delivery wire broken/fractured during use' and 'coil jammed' since there was a deviation from the supplied dfu that resulted in a different medical product response than intended by the manufacturer or expected by the user.
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