Patent ID: 7415301

Claim:
A therapeutic system comprising: an energy generator which generates therapeutic energy to treat an affected region in a body; a medical applicator, which is electrically connected to the energy generator, and which comprises: (a) a proximal end portion, (b) a distal end portion that is adapted to be inserted into the body to apply the therapeutic energy to the affected region when the energy generator is activated, and (c) a plurality of position-indicating markers; an image capturing apparatus for capturing an image inside the body including the affected region, such that the markers are included in the captured image when the markers are within an image-capturing field of the image capturing apparatus; and a display for displaying the image captured by the image capturing apparatus, such that the markers are displayed when the markers are included in the captured image; and a control apparatus for detecting a displacement of each of the markers with respect to a reference point set in a position different from the markers, and for controlling the energy generator in accordance with the detected displacement of the markers; wherein the reference point is set on the display, and the control apparatus detects whether displacement of at least one of the markers with respect to the reference point occurs by detecting a positional relationship between the reference point on the display and each of the plurality of position-indicating markers at a plurality of instances of time in a plurality of captured images while the reference point and at least one of the markers are simultaneously displayed on the display.