Abstract: The present invention relates to a tube member having excellent local bending properties that is capable of being freely bent only on a given region thereof at a working temperature, thereby enabling the bending angle thereof to be freely adjusted by a user, and a method for manufacturing the tube member. According to the present invention, the tube member having excellent local bending properties, which is made of an alloy, may include a first region and a second region having different alloy structures from each other. According to the present invention, the first region may be in a cold-worked state or have an austenite phase at a given working temperature, and the second region may have a martensite phase at the given working temperature and a yield stress value lower than a yield stress value of the first region.

Abstract: A catheter having a variable front end structure includes: a tube having an insertion path passing therethrough in a longitudinal direction thereof and one or more first incised slits extending by a given length from the front end side thereof toward the rear end side thereof; an imaging part placed on top of the tube between the one or more first incised slits and aligned in a line with the insertion path on the front end of the insertion path; a front end part made of a flexible material and adapted to surround the outer peripheries of the front ends of the imaging part and the tube; and a tool inserted into the insertion path, wherein the front end part comprises a second incised slit formed at a position distant by a given distance from the front end side thereof toward the rear end side thereof and extending in a width direction thereof.