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(Radiology. 2000;217:904-906.)
© RSNA, 2000

Technical Developments

Neurovascular Embolization: In Vitro Evaluation of a Mechanical Detachable Platinum Coil System1

Kieran J. Murphy, MB, FRCPC, Shinya Mandai, MD,, Philippe Gailloud, MD, Henrik Clint, B Eng, Kazimierz Szopinski, MD, PhD, Helen Quie, BSc, Jean-Baptiste Martin, MD and Daniel A. Rüfenacht, MD

1 From the Department of Radiology, Hospital Cantonal De Geneve, University of Geneva, Switzerland (K.J.M., S.M., P.G., J.B.M., D.A.R.); the Department of Radiology, B-100, Johns Hopkins Medical Institution, 600 N Wolfe St, Baltimore, MD 21287 (K.J.M.); the Department of Neurosurgery, Kagawa Central Perfectua Hospital, Kagawa, Japan (S.M., K.S.); and Cook Europe (Bjaerverskov, Denmark) (H.C., H.Q.). Received May 3, 1999; revision requested June 17; revision received February 9, 2000; accepted February 22. Supported in part by Cook Europe (Bjaerverskov, Denmark). Address correspondence to K.J.M.

The authors evaluated a mechanically detachable platinum coil system intended for neurovascular use. The introduction characteristics, ease of delivery, ease of retrieval, and detachability were studied with fluoroscopic guidance with in vitro silicone models. All the coils passed easily through the microcatheter. The detachment maneuver occurred within 20 seconds with 20 or fewer rotations of the pusher wire. One of 229 coils detached prematurely but only after deliberate and extreme manipulation. The detachment system is safe, reliable, and consistent and will be useful for interventional neuroradiologists.

Index terms: Aneurysm, therapy, 172.757 • Aneurysm, vein of Galen, 1765.73 • Arteries, therapeutic embolization, 17.757 • Arteriovenous malformations, 172.75 • Fistula, arteriovenous, 172.75 • Fistula, carotid-cavernous, 172.75 • Fistula, therapeutic embolization, 172.757 • Phantoms




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