In an articulating probe system, an articulating probe is constructed and arranged to articulate in at least one degree of motion and to transition between a flexible state and a rigid state, the articulating probe comprising a plurality of links between a proximal link and a distal link The distal link of the articulating probe includes a side port constructed and arranged to receive a distal end of an elongate tool. A tool support is in communication with the articulating probe for supporting the elongate tool, the tool support including a tool tube that extends from the tool support at an intermediate portion to the side port of the distal link at a distal portion, the tool tube having a first flexibility in the intermediate portion and having a second flexibility in the distal portion； the second flexibility being greater in flexibility than the first flexibility.
