| Model Number |
VAMF4646C150TU |
| Medical Device Problem Code |
Activation, Positioning or Separation Problem (2906)
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| Health Effect - Clinical Code |
No Consequences Or Impact To Patient (2199)
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| Date of Event |
11/20/2017
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Type of Reportable Event
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Malfunction
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Additional Manufacturer Narrative
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If information is provided in the future, a supplemental report will be issued.
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Event or Problem Description
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A valiant captiva stent graft system was implanted in a patient for the endovascular treatment of a 61mm diameter thoracic aortic aneurysm.It was reported that during the index procedure, the device was tracked to within 4cm of the desired proximal seal location and a pre-deployment angiogram was taken.Forward movement of the device was difficult because the previously implanted synthetic ascending arch replacement graft was pliable and moved along with the forward pressure applied to the valiant stent graft.In addition to this, the hypotube of the delivery system was bending as forward pressure was being applied and the nosecone was held in a downward position as it entered the steep ascending repair, putting it at a difficult deployment angle.Once the main portion of the device was deployed, the physician attempted to deploy the tip capture mechanism of the device.There was an extreme amount of tension on the deployment quick release and it was impossible to advance the nosecone.The device delivery system was then broken down on the back table as per the ifu to gain access to the release knob on the nose cone.The quick release was then rotated in a clockwise direction to manually release the nosecone.The device was then retracted and removed from the body without issue.Per the physician, the cause of the event was anatomy related, with the excessive angulation and previously implanted synthetic graft making deployment difficult.No additional clinical sequelae were reported and the patient will be monitored by their physician.
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Additional Manufacturer Narrative
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Device evaluation summary: the device was returned to the manufacturing facility for evaluation within an endovascular return kit.The device appeared bloodied with the stent graft not loaded within the delivery system as it was deployed in the patient.Upon inspection of the device, the delivery system was returned broken due to the bailout technique.The tip capture release handle and the external slider handle were not returned.The rest of the device was unremarkable.The capture tubing was pulled however, no movement as the silicone seal was adhered to the capture tubing.Films review summary: two still angiograms during implant were returned.Prior to implant, the reported angulated thoracic anatomy and previously implanted surgical graft within the ascending thoracic was confirmed.There was ~90 deg acute angulation beginning just proximal to the intended proximal landing zone.A single valiant stent graft was seen having been implanted just caudal to the lsa.The proximal bare spring and stent graft appeared well opposed to the vessel wall; no clear stent graft issues were observed.Images during deployment were not seen in the returned films.This event is confirmed as positioning difficulties and difficult to deploy.Although a definitive root cause cannot be conclusively determined, based on information available the highly angulated anatomy along with the presence of a previously deployed stent graft most likely impacted on the smooth positioning of the device.From the device analysis, the difficulties to deploy encountered during the procedure was most likely related to the silicone adhered to the capture tubing not allowing passage through the silicon seal.If information is provided in the future, a supplemental report will be issued.
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Search Alerts/Recalls
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