Patent ID: 8715331

Claim:
A catheter assembly, comprising: (a) a stent, the stent having a plurality of expandable struts that define a distal open end, a proximal open end, a side branch aperture, an exterior surface, and an interior volume of the stent, the stent having a compressed configuration and an expanded configuration; (b) a first catheter branch, the first catheter branch including a catheter shaft defining a main guidewire housing, at least a main balloon member positioned on the catheter shaft, a side inflation member, a side balloon member positioned on the side inflation member, the first catheter branch extending through the interior volume of the stent from the proximal open end to the distal open end; (c) a second catheter branch, the second catheter branch extending through the interior volume of the stent from the proximal open end and out through the side branch aperture; and (d) a stent edge protect member separate from the main balloon, the stent edge protect member having a distal end portion positioned proximal of the stent proximal open end at a location adjacent to the proximal open end of the stent in both the compressed and expanded configurations, at least the distal end portion of the stent edge protect member having a thickness measured in a radial direction that is at least as great as a thickness of the stent struts at the distal open end measured in the radial direction, wherein the stent edge protect member is fixed in a predetermined axial or radial position on only the side inflation member and the second catheter branch, wherein the stent edge protect member tapers from a first outer diameter at a distal end to a second outer diameter at a proximal end, wherein the first outer diameter is larger than the second outer diameter, wherein the taper provides a transition surface between the exterior surface of the stent and an outer surface of at least one of the first and second catheter branches, wherein the stent edge protect member has a constant inner dimension from the distal end to the proximal end.