To reduce physical restrictions (weight, an operation range that is too wide and the reducing operation of the degree of freedom at the time of maximum swing) in a hand operation and to realize complicated movements by a simple operation.

A control part 42 is composed of a CPU 46 for controlling a driving part 45 driving actuators 41a, 41b, 41c and 41d with a RAM 44 as an operation area according to a program stored in a ROM 43, and a control instruction to the CPU 46 is given by an operation switch 47 provided on the exterior surface of an operation handle 4. To the control part 42 and the driving part 45, power is supplied from a power source part 48 composed of a battery.