Abstract: An angioplastic device used for treating the areas surrounding bifurcated vessels. The device has an elongated and relatively flexible tubular guiding catheter assembly that slidably houses a guide positioning assembly therein. The elongated tubular guiding catheter assembly has a non-circular lumen that cooperatively receives a guides carrier assembly with a non-circular cross-section. The guide carrier assembly includes two internal through passages through which two guide members are slidably passed and directed to different branches in a bifurcated vessel. The guide members carry at the distal end a balloon with or without stents to be positioned against the internal walls of the vessels being treated.

Abstract: A stent to be used in angioplastic procedures including a parabolically extending support member; and several hyperbolic transverse members. The parabolically extending support member includes several through openings through which the hyperbolic transversed members are mounted. In the contracted state, the main branch and both secondary branches extend parallel to each other. When expanded, the stent defines two secondary branches and one main branch. The junction of the two secondary branches are protected in the same fashion as a pair of pants or a horse saddle.