Medical devices and methods for making and using the same. An example medical device may include an elongate core member having a proximal portion and a distal portion. The distal portion may include a distal end and a flattened region. The flattened region may be disposed proximally of the distal end. The flattened region may have a height and a width. The width may be twice or more as large as the height. A tubular member may be disposed over the distal portion. The tubular member may have a plurality of slots formed therein.
