Abstract: A pneumatically actuated ejection rack system for an aircraft includes a storage tank for storing a pressurized gas at or above a first pressure level and a pressure reducer positioned downstream from the storage tank. The pressure reducer is adapted to reduce the pressure level of the pressurized gas so as to receive the pressured gas at the first pressure level and discharge the pressurized gas at a second pressure level lower than the first pressure level, whereby the second pressure level is sufficient to operate a firing mechanism of the ejection rack system.

Abstract: An expandable endovascular prosthesis comprising: body having a proximal end and a distal end; a first expandable portion disposed between the proximal end and the distal end, the tubular first expandable portion being expandable from a first, unexpanded state to a second, expanded state with a radially outward force thereon to urge the first expandable portion against a vascular lumen; and a second expandable portion attached to the first tubular expandable portion; the second expandable portion being expandable upon expansion of the tubular first expandable portion. The endovascular prosthesis is particularly useful in the treatment of aneurysms, particularly saccular aneurysms.