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Additional information was received on 21jan2025: the customer noted that there was no damage to the device upon opening the package.A pusher stylet was utilized for coil deployment and was advanced through the shipping cartridge without difficulty.There was an aneurysm in the right common iliac artery.It was confirmed that there was difficulty detaching the coil from the delivery wire, the coil was repositioned 2-3 times.There was difficulty in retracting the wire/coil as it became stuck in the catheter.The coil did not remain in the target vessel, as it was removed along with the catheter, the coil was found to be stretched and broke during removal.The coil was rotated both clockwise and counterclockwise, resulting in its failure to deploy.The patient was under anticoagulant therapy, and the patient was on embolic treatment for ima (inferior mesenteric artery) embolization.The physician flushed the catheter before each attempt.
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It was reported that a retracta detachable embolization coil unraveled during a coil embolization procedure for endovascular aneurysm repair (evar) in a patient of unknown age and gender.The coil was introduced via internal iliac artery.It was noted that the coil was difficult to detach, and it unraveled.The device was removed, and the procedure was successfully completed by using another device.As reported, the patient did not experience any adverse effects or require any additional procedures due to this occurrence.A photo provided by the customer shows an unraveled coil.
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Investigation ¿ evaluation it was reported that a retracta detachable embolization coil unraveled during a coil embolization procedure for endovascular aneurysm repair (evar) in a patient of unknown age and gender.The coil was introduced via an internal iliac artery.It was noted that the coil was difficult to detach, and it unraveled.The device was removed, and the procedure was successfully completed by using another device.As reported, the patient did not experience any adverse effects or require any additional procedures due to this occurrence.The customer noted that there was no damage to the device upon opening the package.A pusher stylet was utilized for coil deployment and was advanced through the shipping cartridge without difficulty.There was an aneurysm in the right common iliac artery.It was confirmed that there was difficulty detaching the coil from the delivery wire, the coil was repositioned 2-3 times.There was difficulty in retracting the wire/coil as it became stuck in the catheter.The coil did not remain in the target vessel, as it was removed along with the catheter, the coil was found to be stretched and broke during removal.The coil was rotated both clockwise and counterclockwise, resulting in its failure to deploy.The patient was under anticoagulant therapy, and the patient was on embolic treatment for ima (inferior mesenteric artery) embolization.The physician flushed the catheter before each attempt.The junction zone was located just outside the tip of the catheter during deployment.A photo provided by the customer shows an unraveled coil.As reported, the patient did not experience any adverse effects or require any additional procedures due to this occurrence.Reviews of the documentation, including the complaint history, device history record, quality control procedures and instructions for use (ifu) for the device, were conducted during the investigation.The complaint device was not returned for evaluation; therefore, a physical examination could not be conducted.However, a document-based investigation evaluation was performed.A review of the device master record (dmr) concluded that inspection activities are in place to identify this failure mode prior to distribution.A review of the device history record (dhr) for the reported device lot and related subassembly lots found no relevant nonconformances that could have contributed to the reported failure mode.It should be noted that there were no other complaints associated with the final product lot number.Product labeling review: the current instructions for use [t_mwcer_rev6] state the following: ¿instructions for use 1.Perform an angiogram and measure the diameter of the vessel to be occluded.6.Under fluoroscopic visualization, slowly advance the delivery wire until the entire length of the coil exits the distal end of the catheter.Ensure that the junction remains positioned just inside the catheter tip.Note: advancing the delivery wire slowly allows the junction to be seen more easily and reduces the risk of damaging it.Note: if significant resistance is encountered during coil advancement, do not continue advancing.Retract the delivery wire slightly, then gently re-advance it.If there is still significant resistance, withdraw the delivery wire from the catheter and try using a new coil with a shorter length.8.If the coil position is correct, use the torque device to turn the delivery wire counterclockwise 8-10 times, until coil detachment can be either felt or visualized under fluoroscopy.¿ evidence gathered upon review of the dmr, ifu, dhr, and provided photo suggests that the device was not manufactured out of specification, and that there are no nonconforming devices in house or out in the field.Based on the information provided, no product returned, and the results of our investigation, it was concluded that the cause of this event is an unintended use error, based on the customer stating the junction zone was located outside of the catheter, as opposed to just inside the catheter tip as stated in the instructions for use.Per the risk assessment no further action is required.The appropriate personnel have been notified.Cook will continue to monitor for similar complaints.This report is required by the fda under 21 cfr part 803 and is based on unconfirmed information submitted by others.Neither the submission of this report nor any statement contained herein is intended to be an admission that any cook device is defective or malfunctioned, that a death or serious injury occurred, nor that any cook device caused, contributed to, or is likely to cause or contribute to a death or serious injury if a malfunction occurred.
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