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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 28:872-874, May 2007
© 2007 American Society of Neuroradiology

Technical Note
INTERVENTIONAL

Embolectomy in a Rabbit Acute Arterial Occlusion Model Using a Novel Electromechanical Extraction Device

J. Hartman^a,b, W. Small, IV^c, T.S. Wilson^c, J. Brock^a, P.R. Buckley^c, W.J. Benett^c, J.M. Loge^c and D.J. Maitland^c

^a Department of Radiology, University of California-Davis School of Medicine, Sacramento, Calif
^b Kaiser Permanente Medical Center, Sacramento, Calif
^c Lawrence Livermore National Laboratory, Livermore, Calif

Please address correspondence to Duncan J. Maitland, PhD, 7000 East Ave, L-211, Livermore, CA 94550; e-mail: maitland1{at}llnl.gov

SUMMARY: A prototype endovascular electromechanical clot-extraction device was fabricated using a combination of shape memory polymer and shape memory nickel-titanium alloy (nitinol). Five embolic vascular occlusions were created in 4 rabbits by injecting thermally coagulated blood through a 4F catheter in the common carotid artery. Angiography immediately after clot injection showed complete or partial occlusion of the common carotid artery. Posttreatment angiography showed complete (2/5), partial (2/5), or no (1/5) restoration of blood flow.