ABSTRACT
In the early 1990s, Guglielmi, working with Vinuela and colleagues, described an ingenious device of soft coils mounted on a stylet, which could be positioned, withdrawn, and repositioned in an aneurysm until an optimum configuration was achieved, filling the aneurysm while sparing the parent artery. 12,13 At this point the coil could be electively detached at the leisure of the operator. Serially smaller coils could be nested one within the next much like Russian dolls (a nod to Serbinenko?). These devices have likewise been modified and improved; matched with sophisticated, high-speed biplane digital angiography systems, they now complement surgery by providing lower-risk options for the most difficult surgical lesions.
