CPC A61B 17/12172 (2013.01) [A61B 17/12113 (2013.01); A61B 17/12177 (2013.01); A61B 2017/1205 (2013.01)] | 20 Claims |
1. 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 configured to be delivered in a collapsed configuration through an inner lumen of a delivery catheter, the occlusion element comprising an inverted mesh tube having a first end, a second end, an outer layer, and an inner layer, the outer layer transitioning to the inner layer at a distal inversion portion, the first end and the second end located at a proximal end of the occlusion element,
wherein the outer layer comprises a distal dome, a proximal cover having a proximal outer face configured to cover an aneurysmal neck, and a reduced-diameter waist between the distal dome and the proximal cover, the reduced-diameter waist having an inner face, the inner face having a minimum diameter and a maximum diameter,
wherein the inner layer comprises a distal portion having a distal portion diameter that is less than the minimum diameter of the inner face, and wherein the inner layer further comprises a proximal portion having a proximal portion diameter that is greater than the maximum diameter of the inner face, such that the inner face is configured to engage an intermediate portion of the inner layer when sufficient downward axial compression is applied on the distal dome in relation to the proximal outer face.
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