Use of a self-expanding vascular occluder for embolization during endovascular aortic aneurysm repair

Noriyuki Kato, Charles P. Semba, Michael D. Dake

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


PURPOSE: Repair of aortic aneurysms with use of stent-graft techniques may require occlusion of large branch vessels to prevent back-bleeding into the excluded aneurysmal sac. The authors describe their experience using a self-expanding vascular occluder (SEVO) to occlude flow in branch arteries during aortic stentgrafting. PATIENTS AND METHODS: Eighty-four patients (65 men, 19 women; mean age, 64 years) underwent thoracic (n = 72) or abdominal aortic (n = 12) stent-grafting. Aneurysm repair was performed using nonbifurcated Z stents covered with polyester or polytetrafluoroethylene (PTFE) fabric. SEVOs constructed from a Z stent (10-20 mm diameter) and PTFE were deployed through a separate catheter (14-20 F). RESULTS: Ten of 84 patients required embolization of large branch arteries with use of a SEVO during aortic stent-grafting (thoracic, n = 1; abdominal, n = 9). The SEVO was placed in the common iliac (n = 9) or subclavian artery (n = 1). The mean SEVO diameter was 14.7 mm (range, 10-20 mm). Eight patients undergoing SEVO embolization had immediate thrombosis of the treated artery. One patient required additional embolization with use of conventional coils. No patients had back-bleeding into the aneurysm, device migration, microembolization, or limb ischemia (mean follow-up, 140 days; range, 50-200). All 10 patients had complete thrombosis of the aortic aneurysm. CONCLUSION: Use of a novel self- expanding vascular occluding device is a safe and effective supplementary technique to occlude high-flow, large-diameter arterial branch vessels during endovascular aortic aneurysm repair.

Original languageEnglish (US)
Pages (from-to)27-33
Number of pages7
JournalJournal of Vascular and Interventional Radiology
Issue number1
StatePublished - 1997


  • Aneurysm, therapy
  • Aorta, graft and prostheses
  • Arteries, therapeutic blockade

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine


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