Patent ID: 7981027
Filing Date: 2011-07-19
Classification: A61B,G02B

Abstract:
1. An endoscope comprising: an observation window for observing an image of a photographic subject; an illumination window for emitting illumination light for illuminating the photographic subject; a suction port connected to a suction channel, wherein the observation window, the illumination window, and the suction port are provided on a distal end surface of an insertion portion; an observation window peripheral edge portion which is formed so that a surface having the observation window is vertical to an observation light axis; an illumination window peripheral edge portion which is formed so that a surface having the illumination window is vertical to an illumination light axis which tilts with respect to the observation light axis; and a suction port peripheral edge portion which is formed so that a surface having the suction port and the observation window peripheral edge portion form an angle more acute than a tilt angle of the illumination window peripheral edge portion with respect to the observation window peripheral edge portion, wherein the illumination window peripheral edge portion is provided at a tilt angle of about 8° with respect to the observation window peripheral edge portion and the suction port peripheral edge portion is provided at a tilt angle of 2 to 3° with respect to the observation window peripheral edge portion.