Endoscope-holding device and endoscopic system

An endoscope holding device comprising:

• an insertion part having an insertion passage into which an endoscope insertion part is capable of being inserted, the insertion part being capable of holding the endoscope insertion part so as to freely protrude and retract from a distal end face of the insertion part;
• a displacement part having a proximal end portion, which is affixed to a distal end portion of the insertion part, and a distal end portion which protrudes from the distal end portion of the insertion part toward a far end side than the end portion of the insertion part;
• and
• a locking portion provided at the distal end portion of the displacement part and capable of holding a distal end of the endoscope insertion part that protrudes from the distal end face of the insertion part, wherein
• the displacement part comprises:
• a frame body formed in a shape of an arch that, in a side view, is convex in a direction apart from a center axis of the insertion passage, and
• a plate-like body which is provided so as to occlude a part of a space formed at a center of the frame body and which includes a cut out portion formed at a distal end of the plate-like body, wherein
• the locking portion is configured to be capable of holding the endoscope insertion part such that the distal end of the endoscope insertion part passes through a displacement face of the displacement part at the cut out portion, and
• the displacement part is configured to be capable of displacing a living body tissue in a state where the endoscope insertion part is held with the locking portion;
• and
• a distal end face of the endoscope insertion part being held with the locking portion is directed in a same direction as the distal end face of the insertion part.