The Luna AES treats brain aneurysms by blocking (embolizing) blood flow while providing a scaffold to encourage tissue growth across an aneurysm opening and create a plug. The Luna uses a self-expandable, multi-layer oval implant made from Nitinol, a nickel-titanium alloy. The properties of the device allow it to easily compress within a conventional catheter, and then rapidly and easily open to full size once deployed within an aneurysm.