Related Experiment Video
Updated: Aug 5, 2026

Microsurgical Venous Pouch Arterial-Bifurcation Aneurysms in the Rabbit Model: Technical Aspects
Published on: May 11, 2011
Increasing the packing of small aneurysms with complex-shaped coils: an in vitro study
Michel Piotin1, Akira Iijima, Hajime Wada
1Department of Interventional Neuroradiology, Fondation Rothschild, Paris, France.
Abstract:
Nine embolization experiments of a silicone aneurysm model were conducted by using helical and complex-shaped coils. Coils were introduced up to the point when the adjunct of a supplementary coil caused protrusion into the parent vessel. Packing ratios (volume of coils-aneurysm volume) ranged between 31% and 38%. Optimal packing was achieved with complex-shaped coils used in a concentric fashion. The complex-shaped coils allowed a better aneurysm filling than did helical coils.

