A device and system for providing a centered lumen within a catheterbody. A coiled guide lumen (CGL) is composed of a length of wire forming aplurality of coils about the longitudinal axis of the CGL, the CGL includingone ormore first sections having a first diameter and one or more sections having asecond diameter, the second diameter being greater than the first diameter,anda secondary guide lumen extending through the first sections. The CGL mayinclude at least one pull wire extending through the secondary guide lumen andattached at the distal portion of the catheter body. A band may be coupled toaninterior of the catheter body distal portion, each of the pull wires beingcoupled tothe annular band. Alternatively, the system may further include a shim coupledtothe band, each of the pulls wire being coupled to the shim.
