US Patent 10419680 Endoscope system and method of controlling endoscope system

The endoscope system includes an endoscope including an imaging unit that is capable of taking an image of a subject of interest, a display unit for displaying an image taken by the imaging unit, an endoscopic position sensor for detecting a position of the endoscope in the body cavity, a distance measurement unit for measuring a distance from a distal end of the endoscope to the subject of interest, a position calculation unit for computing the positions of the distal end of the endoscope and the subject of interest on the basis of information from the endoscopic position sensor and the distance measurement unit, a position storage unit for storing a position of the subject of interest computed by the position calculation unit, and a direction indication unit for indicating a direction in which the subject of interest is present on the display unit.