Patent ID: 7438720

Claim:
A stent delivery system, the system comprising: a catheter having a catheter distal end and a catheter proximal end, said catheter proximal end comprising a rigid member; a balloon positioned on said catheter distal end, said balloon having a balloon proximal end, a balloon distal end, and an inflation lumen therethrough, said balloon comprising: a fixed wire unslidingly attached to said distal end of said balloon and extending distally past said balloon distal end, said fixed wire configured for guiding said catheter through a vessel; a core wire positioned in said inflation lumen, said core wire extending from a distal end of said rigid member to said distal end of said balloon and attached to said distal end of said balloon and to said rigid member, said rigid member and said core wire providing transmission of torque forces from said catheter proximal end to said catheter distal end; a guidewire lumen positioned alongside said balloon; and a guidewire positioned through said guidewire lumen, said guidewire configured to enter a branch vessel while said balloon is in a main vessel, wherein said catheter, said balloon and said fixed wire are integratedly rotatable about the guidewire.