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It was reported an unknown patient with non-tortuous anatomy underwent a pelvic vein embolization procedure in which multiple cook coils were to be deployed.The operator attempted to deploy a retracta detachable embolization coil in a 10mm right pudendal vein and it became stuck in a competitor microcatheter.The coil detached from the wire, but could not be pushed out of the catheter.The coil, which appeared to be partially unraveled, was exiting the distal tip of the catheter when the physician pulled the catheter out of the patient.Attempting to remove the catheter and coil caused an adjacent coil to migrate to the left lower pulmonary artery.The migrated coil was unable to be snared via the neck access site.An additional puncture site at the groin was used to snare the coil successfully.The patient developed persisting tachycardia with hypoxia and required 15 liters of oxygen.The procedure was completed, but the patient was transferred for medical assessment."no further hypoxia and tachycardia lasted 6 hours." the patient was hospitalized for one night and then discharged.It was noted that the physician flushed the catheter before each coil deployment and the device was not rotated while advancing into the delivery site.No other adverse effects were reported.
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Blank fields on this form indicate the information is unknown, unchanged, or unavailable.Correction: a3, additional information: b5, d9.This report includes information known at this time.A follow up report will be submitted should additional relevant information become available.This report is required by the fda under 21 cfr part 803.This report is based on unconfirmed information submitted by others.Neither the submission of this report nor any statement made in it is intended to be an admission that any cook device is defective or malfunctioned; that a death or serious injury occurred; or that any cook device caused or contributed to; or is likely to cause or contribute to a death or serious injury if a malfunction occurred.
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(b)(6) clinic in the united kingdom informed cook of an incident involving an mwcer-35-14-12 (retracta detachable embolization coil) from lot 14083443.It was reported that the user tried to retract the coil, and the coil became stuck in the catheter.The user then tried to deploy the coil again and the coil detached prematurely.The user tried to withdraw the catheter and detached coil, which caused a previously placed coil to migrate to the left lower pulmonary artery.The migrated coil was retrieved with a snare.The case was completed, but the patient was transferred to the closest hospital for a medical assessment due to tachycardia and hypoxia.Atrial tachycardia self-resolved after about 6 hours.The patient stayed one night in the hospital and was then discharged.Reviews of the complaint history, device history record (dhr), quality control procedures, instructions for use (ifu), as well as a visual inspection of the returned product, were conducted during the investigation.The coil was received in an open and damaged condition.The coil was detached from the delivery wire and stretched.The delivery wire was not received.Cook has concluded that the device was manufactured to specification additionally, a document-based investigation evaluation was performed.A review of the device master record (dmr) concluded that sufficient inspection activities are in place to identify this failure mode prior to distribution.In response to this incident, cook reviewed the dhr.The dhr for lot 14083443 records no relevant non-conformances.A database search for complaints on the reported lot found no additional complaints reported from the field.Cook concluded that no nonconforming product from this lot exists in house or in the field.Cook also reviewed product labeling.The current instructions for use [t_mwcer_rev5] state the following: "precautions prior to introduction of the embolization coil, flush the angiographic catheter with saline.This product is intended for use by physicians trained and experienced in arterial and venous vessel embolization techniques.Standard techniques for placement of vascular access sheaths, angiographic catheters, and wire guides should be employed.Instructions for use: 5.Remove the delivery wire holder and the metal loading cartridge from the catheter hub while holding the delivery wire stationary.Remove the torque device and reserve it for use later in the procedure.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.Note: do not turn the delivery wire counterclockwise during advancement; the coil may be unintentionally detached.How supplied: upon removal from package, inspect the product to ensure no damage has occurred." based on the information provided, inspection of the returned device, and the results of the investigation, cook has concluded that component failure unrelated to manufacturing or design deficiencies contributed to this incident.It was reported that the patient was active.The inner diameter of the delivery catheter was.038" and the outer diameter of the coil is.035".It is possible that the gap between the two caused the coil to bunch up in the catheter, contributing to the coil becoming stuck.The appropriate personnel have been notified.Cook will continue to monitor for similar complaints.Per the risk assessment no further action is required.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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