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This report is related to report reference 9680654-2018-00005.The complaint device was not returned for evaluation and remains in-situ.The work order (b)(4) has been reviewed and appears complete and correct.Medical imaging of the hospital admission for ruptured aneurysm was provided and reviewed by the medical director at william cook australia.The medical director confirmed that the proximal and distal components have separated, causing a type iii endoleak, and subsequent rupture of the aneurysm.Imaging from the original procedure in 2013 was received and the medical director stated that: "there appears to be a good area of overlap between the main graft components at the time of the initial procedure, with at least 2 stents overlap, and possibly 3" and "the degree of anterior ¿bowing¿ of the graft seems to have increased between the initial procedure and the imaging of the hospital admission for ruptured aneurysm".The device ifu states: "the long-term performance of fenestrated endovascular grafts, including the stents placed in fenestrations/scallops, has not yet been established.All patients should be advised that endovascular treatment requires life-long, regular follow-up to assess their health and the performance of their endovascular graft.Patients with specific clinical findings (e.G., endoleaks, enlarging aneurysms, changes in the structure or position of the endovascular graft, or stenosis/occlusion of vessels accommodated by fenestrations) should receive enhanced follow-up." "after endovascular graft placement, patients should be regularly monitored for perigraft flow, aneurysm growth, patency of vessels accommodated by a fenestration/scallop, or changes in the structure or position of the endovascular graft.At a minimum, annual imaging is recommended, including: 1) abdominal radiographs to examine device integrity (separation between components, stent fracture or barb separation) and 2) contrast and non-contrast ct to examine aneurysm changes, perigraft flow, patency, tortuosity and progressive disease.If renal complications or other factors preclude the use of image contrast media, abdominal radiographs and duplex ultrasound may provide similar information." "adverse events states potential adverse events that may occur and/or require intervention include, but are not limited to: endoleak, endoprosthesis: improper component placement; incomplete component deployment; component migration; suture break; occlusion; infection; stent fracture; graft material wear; dilatation; erosion; puncture; perigraft flow; barb separation and corrosion".Based on the information provided, a definitive root cause could not be determined.It is possible that the separation was due to: insufficient fixation (friction) between the proximal and distal components.Patient-related factors.The degree of anterior ¿bowing¿ of the graft seems to have increased between the initial procedure and the imaging of the recent hospital admission for ruptured aneurysm.
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