Bifurcated stent and delivery system

A bifurcated stent, the bifurcated stent comprising:

• a primary stent section, the primary stent section being balloon expandable, the primary stent section having a tubular wall, a first end, and a second end, the first end defining a proximal opening, the second end defining a distal opening, the primary stent section being expanded from an unexpanded configuration to an expanded configuration, in the expanded configuration the primary stent section defining a primary flow path between the proximal opening and the distal opening, the tubular wall of the primary stent section defining a secondary opening;
• and
• a secondary stent section, the secondary stent section being self-expanding, an end of the secondary stent section being engaged to a portion of the tubular wall of the primary stent section defining the secondary opening, the secondary stent section having an unexpanded configuration and an expanded configuration, the secondary stent section having a first length in the unexpanded configuration, the secondary stent section having a second length in the expanded configuration, the first length less than the second length, the secondary stent section being expanded to the expanded configuration after the primary stent section is expanded to the expanded configuration, in the unexpanded configuration at least a portion of the secondary stent section forming a portion of the tubular wall of the primary stent section, in the expanded configuration the secondary stent section being positioned within a secondary vessel of the bifurcation site and defining a secondary flow path, the secondary flow path being in fluid communication with the primary flow path through the secondary opening.