A medical apparatus includes a bending portion that is bent via a pulled wire, a drive section that pulls the wire, a detection section and a drive force amount detection section that detect an amount of drive of the drive section and an amount of drive force, a storage section that stores information on a correlation of the amount of drive force and the amount of drive of the drive section beforehand, a bending amount detection section that detects the amount of bending of the bending portion based on the amount of drive and the amount of drive force, and the information of the storage section, a judgment section that judges the presence or absence of looseness of the wire from a detection result of the drive force amount detection section and a correction section that corrects the amount of drive by the drive section based on a judgment result of the judgment section.
