a second length where the first length is less than the second length the secondary stent section is expanded to the expanded configuration after the primary stent section is expanded to the expanded configuration the secondary stent section forms a portion of the tubular wall of the primary stent section in the unexpanded configuration application_number US 72614407 A description as indicated above the present invention includes many different embodiments in some embodiments the invention is directed to various designs of bifurcated stents their delivery systems and methods of use in fig1 an embodiment of the invention is shown which comprises a bifurcated stent delivery system shown generally at 100 system 100 includes a catheter 10 that is advanced to a bifurcation site 20 along a primary guide wire 12 and a secondary guide wire 14 in use the primary guide wire 12 and secondary guide wire 14 are advanced into a body lumen or vessel an advanced into the primary vessel 22 at the bifurcation site 20 the secondary guide wire 14 is directed into a secondary vessel 24 causing the guide wires 12 and 14 to diverge about the carina 26 catheter 10 is advanced along the shared path of the guide wires 12 and 14 until it reaches the carina 26 in order to accommodate.