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Comparative Study
. 2004 Jan;25(1):60-2.

Aneurysm packing with HydroCoil Embolic System versus platinum coils: initial clinical experience

Harry J Cloft  1 , David F Kallmes
Affiliations
Comparative Study

Aneurysm packing with HydroCoil Embolic System versus platinum coils: initial clinical experience

Harry J Cloft et al. AJNR Am J Neuroradiol. 2004 Jan.

Abstract

The HydroCoil Embolic System (HES; MicroVention, Aliso Viejo, CA) was developed to improve the efficacy of endovascular treatment of cerebral aneurysms. The HES may reduce recurrences of aneurysms by allowing for increased packing density as compared with platinum coils. We report our initial experience with the HES in the treatment of 11 patients with cerebral aneurysms and compare findings to those in size-matched control cases treated with platinum coils. The HES provided substantially improved volumetric packing of the aneurysm lumen relative to standard platinum coils (73% vs. 32%; P=.0001).

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Figures

F<sc>ig</sc> 1.
Fig 1.
Hybrid hydrogel-platinum coil device. Left, Bare platinum coil. Middle, Prehydration image, showing initial profile of the device. Highly compact hydrogel material is wrapped around a platinum coil. An outer “overcoil” is wrapped around the hydrogel-covered coil. The outer diameter of the coil is 0.008 inch. The thickness of the hydrogel is approximately 0.0005 inch, such that the outer diameter of the gel covering is 0.009 inch. With the overcoil, the outer diameter is 0.013 inch. Right, Posthydration image of the device, showing marked expansion of the hydrogel material, which has become translucent. The radial thickness of the expanded hydrogel is approximately 0.009 inch, such that the total outer diameter of the hydrated device is 0.027 inch.
F<sc>ig</sc> 2.
Fig 2.
Scatter diagram of percent total occlusion of 11 aneurysms treated with platinum coils and 11 aneurysms treated with HES coils.
See this image and copyright information in PMC

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