An elongated member for medical use that is used to perform a procedure in a pulmonary airway. The elongated member demonstrates enhanced reachability within the pulmonary airway and is fabricated by connecting plural hollow members different from each other in lumen diameter, outer diameter and physical properties. This configuration advantageously eliminates the formation of a step or ridge that would impede the smooth movement or manipulation of a procedure instrument that is advanced or retreated within the lumen of the elongated member.
