Patent ID: 8668716

Claim:
A method of isolating a vascular aneurysm stemming from a vessel, said aneurysm defining an aneurysm sac and an aneurysm neck, said aneurysm neck having an opening between said aneurysm sac and said vessel, said opening being smaller than said aneurysm sac, said method comprising: advancing a pressure tube to a location of said aneurysm, wherein the pressure tube is attached to an expandable hollow shell and configured to communicate fluid pressure to the inside of the shell, the shell having a distal end and a proximal end, and compacted radially about the pressure tube to a diameter suitable for percutaneous insertion; pressurizing the shell via the pressure tube to expand the shell to a shape defining a distal lobe and a proximal lobe with a waist therebetween; positioning the shell partially inside the aneurysm to place the waist inside the neck of the aneurysm, wherein the distal lobe is positioned inside the aneurysm and the proximal lobe is positioned outside the aneurysm and inside the vessel; axially collapsing the shell by proximally retracting the pressure tube to converge the distal lobe and the proximal lobe of the shell together about the neck of the aneurysm; disconnecting the pressure tube from the shell, thereby trapping the aneurysm neck over the waist and between two disks formed from the collapsed distal lobe and proximal lobe.