Systems and methods for treating aneurysms

An apparatus for treating an aneurysm in a blood vessel, comprising:

• an occlusion element configured to be releasably coupled to an elongate delivery shaft and comprising a distal end, a proximal end, and a longitudinal axis extending between the distal end and the proximal end, the occlusion element comprising:
• an inverted mesh tube having an outer layer and an inner layer, the outer layer transitioning to the inner layer at an inversion fold located at or adjacent the distal end of the occlusion element, wherein the inverted mesh tube comprises a first end and a second end, the first end and second end coupled together at the proximal end of the occlusion element;
• a non-braided stent extending as a single-layer, non-overlapped zig zag circumferentially around the longitudinal axis of the occlusion element, the stent located radially inside the outer layer of the inverted mesh tube, the stent having a distal end and a proximal end, wherein the distal end of the stent is proximal to the distal end of occlusion element and wherein the proximal end of the stent is distal to the proximal end of the occlusion element, and wherein the stent is self-expanding such that it is configured to apply an outward radial force.