One elongate medical device can have an elongate tubular body of the proximal portion for being configured to anisotropic curved isotropic bending and a distal portion including one. More than first a steering wire guiding pieces that first side that first steering wire can extend through the distal region along elongate tubular body and the second steering wire is formed can extend through more than second a steering wire guiding pieces of the one second side formation along the distal region of elongate tubular body.