Provided are: a
catheter tip position confirmation device which makes it possible to ascertain the positional relationship between the tip portion of a
catheter and a target object such as an inner wall of a
visceral organ of a
living body and the like; and a medical
catheter set provided with the same. A catheter
tip position confirmation device 2 has: an
optical fiber 10 which has a base end portion 10b and a tip portion 10t and is disposed such that the tip portion 10t is positioned at or near the tip 3t of a catheter 3; a
first light source 20 which allows measurement light to enter the
optical fiber 10 from the base end portion 10b; a second
light source 20 which allows visible light to enter the
optical fiber 10 from the base end portion 10b; and an analyzer 30 which comprises a function of measuring the distance between the tip portion 10t of the optical
fiber 10 and a target object 4 on the basis of
signal information regarding the measurement light and
signal information regarding return light resulting from reflection, on the target object 4, of the measurement light emitted from the tip portion 10t of the optical
fiber 10, or a function of examining information regarding the state of the target object 4 and / or the tip 3t of the catheter 3. The visible light is emitted from the tip portion 10t of the optical
fiber 10 and the proximity thereof.