Composite vascular flow diverter

A device for deploying a vascular flow diverter, the device comprising:

• a microcatheter comprising a tubular outer wall, a distal end, and a proximal end, the distal end comprising a transverse opening and a longitudinal opening, where the transverse opening is perpendicular entirely along a cross-section of the distal end to a longitudinal axis of the microcatheter and the longitudinal opening is substantially parallel to the longitudinal axis of the microcatheter, and the longitudinal opening intersects the transverse opening;
• a delivery wire comprising a distal section, a proximal section, and a junction between the distal section and the proximal section, where:
• the distal section has a smaller cross section than the proximal section;
• the distal section is steerable from a proximal end of the proximal section, where at least a portion of the distal section of the delivery wire is configured to adopt a curved configuration;
• and
• the junction is configured to push the vascular flow diverter;
• and
• a pull wire positioned in a lumen of the delivery wire and terminating at a tip of the distal section,
• where a proximal end of the pull wire may be pulled to form the curved configuration in at least a portion of the distal section, and
• where the distal section of the delivery wire is sufficiently contiguous to contain, when the pull wire is pulled to form the curved configuration in the distal section, an entire length of a portion of the pull wire extending from the tip of the distal section, through the distal section, and to the junction.