Systems, devices, and methods for delivering a lumen occlusion device using distal and/or proximal control

A system for occluding a biological lumen, comprising:

• an occlusive implant having at least one coil a proximal hub and a distal hub that are movable towards each other;
• an elongate pusher having an inner lumen;
• and
• a control wire slidably received within the inner lumen of the pusher,
• wherein the control wire has a longitudinal axis, and a distal end of the control wire has a width that is larger than a width of a shaft of the control wire, the distal hub of the implant being adapted to impede proximal motion of the distal end of the control wire with respect to the distal hub until the application of a threshold force,
• wherein the distal end of the control wire is releasably coupled to the distal hub of the implant such that the distal hub of the implant is moveable with the control wire and releasable from the control wire,
• wherein the proximal hub of the implant is releasably coupled to the pusher with a tether such that proximal retraction of the control wire releases the proximal hub from the pusher,
• wherein the proximal hub of the implant comprises a proximal end having a lumen through which the control wire can slide and a side window located distal to the implant proximal end,
• wherein the tether has a proximal portion and a distal portion, the proximal portion being secured to the pusher such that the tether is not wholly slidable with respect to the pusher, and the distal portion being adapted to pass through the side window and engage with the control wire to maintain coupling of the proximal hub to the pusher.