A rigid endoscope includes a first insertion section extending along longitudinal directions, a first needle which defines an outer edge of a first opening, and which is sharpened from a proximal direction toward a distal direction, and a first functional section which is provided in a vicinity of the first opening of a first lumen, and which is configured to perform some part of the functions. The rigid endoscope includes a second insertion section which extends along the longitudinal directions, and which is located apart from the first insertion section in directions perpendicular to the longitudinal directions, a second needle which defines an outer edge of a second opening, and which is sharpened from the proximal direction toward the distal direction, and a second functional section which is provided in a vicinity of the second opening of a second lumen, and which is configured to perform some part of the functions different from the functions performed by the first functional section.
