Devices for treating vascular malformations

A method for treating a vascular malformation, the method comprising:

• providing an apparatus including an orifice section having two endpoints, an intra-vascular-malformation docking section, and a connecting section having two endpoints, the apparatus configured such that, when unconstrained:
• the orifice section is shaped so as to define a spiral orifice-section curve that winds at least 2.5 turns around an orifice-section central axis at a changing distance from the orifice-section central axis,
• the intra-vascular-malformation docking section is shaped so as to define a docking-section curve that winds between 0.5 and 2 turns around a docking-section central axis at a changing or constant distance from the docking-section central axis,
• a connecting-section slope of the connecting section equals the quotient of (a) a rise distance between the two endpoints of the connecting section, measured along the orifice-section central axis, divided by (b) a run distance equal to a length of the connecting section between the two endpoints of the connecting section, measured along the connecting section,
• an orifice-section slope of the orifice section equals the quotient of (a) a rise distance between the two endpoints of the orifice section, measured along the orifice-section central axis, divided by (b) a run distance equal to a length of the orifice section between the two endpoints of the orifice section, measured along the orifice section, and
• the connecting-section slope is greater than the orifice-section slope;
• implanting (a) the intra-vascular-malformation docking section within the vascular malformation, (b) a connecting section of the apparatus, and (c) the orifice section within a portion of the vascular malformation so as to at least partially cover an orifice of the vascular malformation, the portion of the vascular malformation including one or more anatomical features selected from the group consisting of:
• a neck of the vascular malformation and a wall of the vascular malformation;
• and
• implanting endovascular embolization coils in the vascular malformation such that the endovascular embolization coils become entangled with the intra-vascular-malformation docking section.