The invention relates generally to expandable medical implants for maintaining support of a body lumen and, in particular, to an axially nested, diametrically expandable, slide and lock vascular device for enlarging an occluded portion of a vessel. The axially nested vascular device desirably achieves...http://www.google.se/patents/US20070032857?utm_source=gb-gplus-sharePatent US20070032857 - Axially nested slide and lock expandable device
