Patent ID: 8206429

Claim:
A bifurcated catheter assembly comprising: an elongate catheter shaft including a proximal region and a distal region; a side branch assembly, the side branch assembly extending along at least a portion of the distal region of the elongate catheter shaft; a balloon disposed about the distal region of the catheter shaft, the balloon configured to be expanded from an unexpanded configuration to an expanded configuration; a stent including a main stent body and a side opening, wherein the stent is disposed about the balloon and the side branch assembly, wherein the side branch assembly extends through the side opening of the stent; a first EAP helix winding about at least a portion of the catheter, the first EAP helix in electrical communication with an electrical source and having at least two electrical configurations, a first helical electrical configuration and a second helical electrical configuration, the first EAP helix also having a volume, the volume of the first EAP helix being greater when in the first electrical configuration than when in the second electrical configuration, the greater volume of the first helical electrical configuration exerting a torque force which rotates the catheter; and a fine rotation EAP helix disposed about the catheter also having at least two electrical configurations which stimulate changes in volume, the volumetric change the fine rotation EAP helix undergoes between its two electrical configurations being no greater than 30% of the volumetric change of the first EAP helix.