A probe device comprising an elongate flexible body and bend sensors for detect bending of the body and producing an output signal that is indicative of the detected bend. The probe device is connected to a processor which creates a data model of the probe device from the respective output signals of the bend sensors and renders the data model as an image of said probe device. The image may be superimposed with an image of an object, for example part of a human or animal body, into which the probe device is inserted during use.
