Abstract: An in-situ fenestration device. The device includes a sheath including a proximal end and a distal end. The device also includes an expandable cone including a proximal end, a distal end, and a body extending between the proximal end and the distal end. The expandable cone includes a heating element. The expandable cone is configured to expand from a crimped state within the sheath into an expanded state extending from the distal end of the sheath. The heating element of the expandable cone is configured to be energized with an energy source to form a fenestration in a graft material at a fenestration site of a stent graft.

Abstract: A medical implant for implanting in a body lumen, includes multiple filamentary components braided into an elongate structure having a first end and a second end and defining an implant lumen, wherein the cross-section of the elongate structure is non-uniform along its length or wherein the cross-section of the elongate structure is uniform along its length but non-circular, and wherein each filamentary component is substantially equal in length as measured from the first end to the second end of the structure.