A bendable catheter (1, 1A) comprising: a main tube (2, 2A) that includes a distal end, a proximal end, and a first lumen and a second lumen, wherein the first lumen is formed so that the distal end of the main tube communicates with the proximal end of the main tube (2,2A), wherein the second lumen is formed radially offset from the first lumen; a bendable tube that is tubular, that has a longitudinal axis and a first internal space communicating with the first lumen and the second lumen and that is formed along the longitudinal axis, and being arranged at the distal end of the main tube (2, 2A), the bendable tube being more flexible than the main tube (2, 2A); characterized in that the bendable catheter (1, 1A) further comprises: a first coil (6, 6A) of which a proximal end is fixed to an inner wall of the first lumen at a distal end of the first lumen and which is arranged within the bendable tube, wherein a second internal space within the first coil (6, 6A) communicates with the first lumen; and a second coil (7, 7A) of which a proximal end is closer to a distal end of the bendable catheter than both the distal end in the first lumen and the distal end in the second lumen, which has a central axis extending parallel to a central axis of the first coil (6, 6A), which is provided adjacent to the first coil (6, 6A), and is arranged between the bendable tube and the first coil (6, 6A), wherein a third internal space within the second coil (7, 7A) communicates with the second lumen; a bending manipulation wire that is inserted through the third internal space and the second lumen, is provided in the second coil (7, 7A) so as to be movable along the longitudinal axis, an end of the bending manipulation wire being fixed in the second coil (7, 7A) to bend the second coil (7, 7A), wherein the second coil (7, 7A) is fixed in an inner surface of the bendable tube. a main tube (2, 2A) that includes a distal end, a proximal end, and a first lumen and a second lumen, wherein the first lumen is formed so that the distal end of the main tube communicates with the proximal end of the main tube (2,2A), wherein the second lumen is formed radially offset from the first lumen; a bendable tube that is tubular, that has a longitudinal axis and a first internal space communicating with the first lumen and the second lumen and that is formed along the longitudinal axis, and being arranged at the distal end of the main tube (2, 2A), the bendable tube being more flexible than the main tube (2, 2A); a first coil (6, 6A) of which a proximal end is fixed to an inner wall of the first lumen at a distal end of the first lumen and which is arranged within the bendable tube, wherein a second internal space within the first coil (6, 6A) communicates with the first lumen; and a second coil (7, 7A) of which a proximal end is closer to a distal end of the bendable catheter than both the distal end in the first lumen and the distal end in the second lumen, which has a central axis extending parallel to a central axis of the first coil (6, 6A), which is provided adjacent to the first coil (6, 6A), and is arranged between the bendable tube and the first coil (6, 6A), wherein a third internal space within the second coil (7, 7A) communicates with the second lumen;