A system (100, 200) for treating a bifurcated vessel in a patient, the bifurcated vessel having a main branch and a side branch, said system comprising: a first delivery catheter carrying a first stent, the first stent comprising a proximal stent and a distal stent, the first delivery catheter also having a first elongate shaft with a proximal and a distal end, a proximal expandable member with the proximal stent disposed thereover, and a distal expandable member with the distal stent disposed thereover, the proximal and distal expandable members disposed adjacent the distal end of the first elongate shaft, wherein the proximal and distal expandable members each have a collapsed configuration and a radially expanded configuration, the collapsed configuration having a profile suitable for advancement through a blood vessel, and the expanded configuration having a larger profile than the collapsed configuration profile, and wherein the proximal and distal expandable members are independently expandable of one another, and wherein the proximal end of the distal stent comprises a notched region, and wherein the distal end of the proximal stent comprises a notched region; and a second delivery catheter carrying a second stent, the second delivery catheter also having a second elongate shaft with a proximal and a distal end, a second expandable member with the second stent disposed thereover, the second expandable member disposed adjacent the distal end of the second elongate shaft, wherein the second expandable member has a collapsed configuration and a radially expanded configuration, the collapsed configuration having a profile suitable for advancement through a blood vessel, and the expanded configuration having a larger profile than the profile in the collapsed configuration, and wherein the second expandable member is independently expandable of the proximal and the distal expandable members, wherein a proximal end of the distal stent abuts a distal end of the proximal stent so as to form a side hole in the first stent and wherein the second delivery catheter slidably passes through the side hole in the first stent. a first delivery catheter carrying a first stent, the first stent comprising a proximal stent and a distal stent, the first delivery catheter also having a first elongate shaft with a proximal and a distal end, a proximal expandable member with the proximal stent disposed thereover, and a distal expandable member with the distal stent disposed thereover, the proximal and distal expandable members disposed adjacent the distal end of the first elongate shaft, wherein the proximal and distal expandable members each have a collapsed configuration and a radially expanded configuration, the collapsed configuration having a profile suitable for advancement through a blood vessel, and the expanded configuration having a larger profile than the collapsed configuration profile, and wherein the proximal and distal expandable members are independently expandable of one another, and wherein the proximal end of the distal stent comprises a notched region, and wherein the distal end of the proximal stent comprises a notched region; and a second delivery catheter carrying a second stent, the second delivery catheter also having a second elongate shaft with a proximal and a distal end, a second expandable member with the second stent disposed thereover, the second expandable member disposed adjacent the distal end of the second elongate shaft, wherein the second expandable member has a collapsed configuration and a radially expanded configuration, the collapsed configuration having a profile suitable for advancement through a blood vessel, and the expanded configuration having a larger profile than the profile in the collapsed configuration, and wherein the second expandable member is independently expandable of the proximal and the distal expandable members, wherein a proximal end of the distal stent abuts a distal end of the proximal stent so as to form a side hole in the first stent and wherein the second delivery catheter slidably passes through the side hole in the first stent.