Anchoring delivery system and methods

A neurovascular catheter, comprising:

• an elongate control element configured to advance the catheter, the control element comprising a flat ribbon, a proximal end region, and a distal end region;
• and
• a distal luminal portion extending along a longitudinal axis having a proximal end region coupled to the distal end region of the control element,
• wherein the distal luminal portion has a side wall defining a single, inner lumen extending between a proximal opening into the inner lumen at the proximal end region and a distal opening from the central lumen at the distal end region, the side wall comprising:
• a tubular inner liner having an outer surface coated with a compound suitable for bonding;
• a reinforcement structure that is a helical coil bonded to the coated outer surface of the tubular inner liner;
• and
• an outer jacket surrounding the helical coil,
• wherein the distal end region of the elongate control element is coupled to the proximal end region of the distal luminal portion sandwiched between layers of the side wall,
• wherein the proximal end region of the distal luminal portion where the distal end region of the elongate control element is coupled has a step-up in outer diameter compared to an outer diameter of the distal luminal portion distal to the proximal end region of the distal luminal portion.