Delivery mechanism for repositionable intracranial stent

A stent delivery system for in-situ deployment of a self-expanding stent, comprising:

• a self-expanding stent retention sleeve;
• and
• a pushwire disposed inside the self-expanding stent retention sleeve;
• wherein the self-expanding stent retention sleeve includes:
• a proximal end;
• a distal end;
• and
• a central section having a plurality of slots forming a plurality of struts,
• wherein a distal end of the pushwire has at least one groove formed therein, the at least one groove adapted to releasably couple with at least one protrusion formed at a proximal end of the self-expanding stent in a case where the self-expanding stent retention sleeve is in a radially constrained configuration, and
• wherein the distal end of the self-expanding stent retention sleeve is configured to move toward the proximal end of the self-expanding stent retention sleeve in a case where the self-expanding stent retention sleeve transition to an unconstrained configuration from the radially constrained configuration, thereby releasing the at least one protrusion from the at least one groove to deploy the self-expanding stent.