Abstract: An endoscope includes: an outer cylinder including an outer cylinder distal end portion held by a distal end holding portion provided inside an insertion section and an outer cylinder proximal end portion held by a proximal end holding portion provided on a proximal end side relative to the distal end holding portion; and an inner cylinder provided inside the outer cylinder, the inner cylinder including inside a wire coupled to a movable portion provided in the insertion section, an amount of stretch of the inner cylinder due to bending of the insertion section being larger than an amount of stretch of the outer cylinder due to the bending, the inner cylinder, in a stretch state where the inner cylinder stretches due to the bending, forming a gap in a longitudinal direction of the outer cylinder between the inner cylinder and the proximal end holding portion.

Abstract: An endoscope includes an insertion portion, a raising base, an operation portion, a long member configured to cause the raising base to operate, a moving mechanism configured to allow the long member to be inserted through an inside, and move in an axial direction along the long member, a fixing tool that is attachable and detachable to and from the moving mechanism, and is configured to fix the moving mechanism and the long member by being attached to the moving mechanism, and an urging member that is disposed to contact the moving mechanism and the fixing tool, is set in a direction to separate the moving mechanism and the fixing tool from each other, is configured to push the moving mechanism by bringing the fixing tool close to the moving mechanism, and has an urging force with a strength that moves the moving mechanism to a predetermined position.

Abstract: An endoscope includes: a long member that is connected to a direction changing portion provided in an insertion portion and enables the direction changing portion to move; a sliding member that includes a first contact portion that is brought into contact with an inner surface of a guide tube that allows insertion of the long member and a second contact portion that is brought into contact with the inner surface of the guide tube; a flow path that includes an opening portion formed in a direction that intersects a longitudinal axis of the sliding member such that a fluid flows into a clearance between the guide tube and the sliding member; and an operation member that causes the sliding member to move forward and backward relative to the guide tube.

Abstract: An endoscope includes: an outer cylinder including an outer cylinder distal end portion held by a distal end holding portion provided inside an insertion section and an outer cylinder proximal end portion held by a proximal end holding portion provided on a proximal end side relative to the distal end holding portion; and an inner cylinder provided inside the outer cylinder, the inner cylinder including inside a wire coupled to a movable portion provided in the insertion section, an amount of stretch of the inner cylinder due to bending of the insertion section being larger than an amount of stretch of the outer cylinder due to the bending, the inner cylinder, in a stretch state where the inner cylinder stretches due to the bending, forming a gap in a longitudinal direction of the outer cylinder between the inner cylinder and the proximal end holding portion.

Abstract: An endoscope includes a connector for connecting a movable body and a long member. The connector includes: an open-close member having a distal end portion and a proximal end portion which are opened or closed by swinging about a predetermined fulcrum, the proximal end portion having a holding portion which holds the long member when the proximal end portion is closed, the distal end portion having an engaging portion which projects outwardly in a radial direction of the distal end portion and is engageable with an inner side of the movable body; and a locking member which moves in a longitudinal direction outwardly in a radial direction of the open-close member, and locks the proximal end portion of the open-close member and the movable body with each other in a state where the long member is held.

Abstract: An endoscope includes: a long member that is connected to a direction changing portion provided in an insertion portion and enables the direction changing portion to move; a sliding member that includes a first contact portion that is brought into contact with an inner surface of a guide tube that allows insertion of the long member and a second contact portion that is brought into contact with the inner surface of the guide tube; a flow path that includes an opening portion formed in a direction that intersects a longitudinal axis of the sliding member such that a fluid flows into a clearance between the guide tube and the sliding member; and an operation member that causes the sliding member to move forward and backward relative to the guide tube.

Abstract: An endoscope includes an insertion portion, a raising base, an operation portion, a long member configured to cause the raising base to operate, a moving mechanism configured to allow the long member to be inserted through an inside, and move in an axial direction along the long member, a fixing tool that is attachable and detachable to and from the moving mechanism, and is configured to fix the moving mechanism and the long member by being attached to the moving mechanism, and an urging member that is disposed to contact the moving mechanism and the fixing tool, is set in a direction to separate the moving mechanism and the fixing tool from each other, is configured to push the moving mechanism by bringing the fixing tool close to the moving mechanism, and has an urging force with a strength that moves the moving mechanism to a predetermined position.

Abstract: A fluid plug unit includes a cylinder connected to a first conduit and a second conduit, and a piston configured execute switching between a first position where leakage of a fluid in the first conduit to an outside is suppressed, and a second position where the fluid is sucked. The fluid plug unit includes a first passage configured to communicate with the first conduit and the second conduit when the piston is disposed in the first position, and to shut off communication with the first conduit when the piston is disposed in the second position, and a second passage configured to shut off communication with the first conduit when the piston is disposed in the first position, and to communicate with the first conduit and the second conduit when the piston is disposed in the second position.

Abstract: A transmission mechanism includes a mobile member, and an adjustment unit which is coupled to the mobile member and which changes in an adjustment amount in a longitudinal axis C direction. The transmission mechanism further includes a pulling and pressing member which is coupled to the raising stand and the adjustment unit. The transmission mechanism further includes a regulation portion which regulates the adjustment amount of the adjustment unit when a raising operation portion is operated and when a tension is applied to the adjustment unit.

Abstract: A fluid plug unit includes a cylinder connected to a first conduit and a second conduit, and a piston configured execute switching between a first position where leakage of a fluid in the first conduit to an outside is suppressed, and a second position where the fluid is sucked. The fluid plug unit includes a first passage configured to communicate with the first conduit and the second conduit when the piston is disposed in the first position, and to shut off communication with the first conduit when the piston is disposed in the second position, and a second passage configured to shut off communication with the first conduit when the piston is disposed in the first position, and to communicate with the first conduit and the second conduit when the piston is disposed in the second position.

Abstract: A transmission mechanism includes a mobile member, and an adjustment unit which is coupled to the mobile member and which changes in an adjustment amount in a longitudinal axis C direction. The transmission mechanism further includes a pulling and pressing member which is coupled to the raising stand and the adjustment unit. The transmission mechanism further includes a regulation portion which regulates the adjustment amount of the adjustment unit when a raising operation portion is operated and when a tension is applied to the adjustment unit.

Abstract: A holding mechanism has a first holding portion and a second holding portion. The first holding portion holds a part of an endoscopic guide member which is exposed to the outside of an endoscope. The second holding portion is disposed at a position different from that of the first holding portion. The second holding portion holds another part of the endoscopic guide member which is exposed to the outside of the endoscope, in an orientation different from an orientation of the first holding portion.