Abstract: A wire fixing structure includes: a first hole portion through which a wire passes; and a second hole portion which is formed in a direction orthogonal to the first hole portion and communicates with the first hole portion. The wire includes: a first portion which is inserted into and is disposed in the first hole portion; a second portion which is extended from the first hole portion and wound around the outer peripheral portion of a wire fixing member; and a third portion which is inserted into and is disposed in the first hole portion again after the second portion is wound around the outer peripheral portion. The fastening member is inserted into the second hole portion and fixes the first portion and the third portion by pressing in the first hole portion.

Abstract: A bending operation mechanism of an endoscope including: a first pulley configured to pull a first wire by being rotated in a first rotation direction; a second pulley, which is coaxial with the first pulley, configured to pull a second wire by being rotated in a second rotation direction opposite to the first rotation direction; and a rotation shaft member including a first protrusion that engages only with the first engagement portion of the first pulley when the rotation shaft member is rotated in the first rotation direction from a neutral position when a bending portion is not bent and a second protrusion that engages only with the second engagement portion of the second pulley when the rotation shaft member is rotated in the second rotation direction from the neutral position.

Abstract: A medical device includes an operation portion, an insertion portion that is insertable into a treatment instrument insertion channel of a mother endoscope, and a mounting portion provided at an operation portion to detachably mount the operation portion onto a bending operation member of the mother endoscope.

Abstract: An endoscope apparatus includes: an endoscope including a first operation portion that is coupled to a first insertion portion to be inserted into a subject; a medical device including a second operation portion that is coupled to a second insertion portion to be inserted into the subject through the first insertion portion, the second operation portion including at least one locking member; and a belt-like body having flexibility and including at least three end portions in which at least one end portion includes a locked portion to be locked to the locking portion, the belt-like body being configured to be wound around the endoscope to hold and fix the second operation portion of the medical device in a state where the at least three end portions are connected to the second operation portion.

Abstract: An insertion apparatus includes: a tube in which a water feeding communication hole opens on an outer peripheral surface of the tube; a tube connector in which a water feeding branch conduit which allows an inner surface of a tube insertion hole to communicate with an outside is formed, and a second stopper portion which protrudes toward the inside of the tube insertion hole is formed; an O ring which is positioned by contacting with the second stopper portion; a spacer which is positioned by contacting with the O ring, and in which a communication hole which allows an inner surface side and an outer surface side of a wall portion to communicate with each other is formed; and an O ring which is positioned by contacting with the spacer.

Abstract: An endoscope includes a pulley provided in an operation portion, having an outer diameter larger than an inner diameter of an endoscope insertion portion, and configured to wind a wire connected to a bending portion; and a wire guard that is arranged to cover a predetermined range of an outer peripheral portion of the pulley, and includes a guide wall arranged to extend within a range of a radius of the pulley from a contact point position at which the wire in contact with the pulley is separated from the pulley in a longitudinal axis direction of the operation portion. The wire guard includes two members each formed in a substantially semicircular plate shape, and coupling parts formed in arc shapes extending from both end portions of the two members and configured to couple the two members.

Abstract: An endoscope system includes a mother endoscope, a baby endoscope and a fixing member. The mother endoscope includes a first insertion section, a first operation section, a treatment instrument insertion channel and an opening. The baby endoscope includes a second insertion section and a second operation section. The first operation section includes a projection portion. The second operation section includes a recess portion that is a recessed face formed such that at least part of the recessed face comes into face contact with a surface of the projection portion. The second operation section is fixed to the first operation section in a state where the recess portion is in contact with the surface of the projection portion.

Abstract: A bending operation mechanism for an endoscope, which is a pulley unit, includes: an up-down bending pulley which is a rotation body; an angle wire which is a bending-portion pulling member having a distal end side connected to a bending portion and a proximal end side that is pulled by the up-down bending pulley; and a spiral spring which is a slack absorption member having a first end connected to the an proximal end of the angle wire and a second end side connected to the up-down bending pulley and configured to pull the angle wire in the direction toward the up-down bending pulley.

Abstract: A baby endoscope which forms a medical device includes: a rotary member; an exterior member which rotatably holds the rotary member about a predetermined rotation axis, houses the rotary member in the exterior member, and has a surface which is brought into contact with a portion of an outer peripheral surface of an operation section of a mother endoscope on an outer peripheral portion; and a bending operation lever mounted on the rotary member, and is disposed within a width of the exterior member in a direction of the rotation axis when the exterior member is viewed in a direction orthogonal to the rotation axis.

Abstract: A bending operation mechanism includes a bending operation member configured to bend a bending portion, a wire pulling member configured to rotate along with rotation of the bending operation member, a lock operation member supported to a rotational axis, a cam member having a cam surface and integrally provided with the lock operation member, and a brake member having a cam follower surface capable of sliding relative to the cam surface. The cam member moves along with rotation of the lock operation member. The brake member moves in a direction in which a contact surface contacts a circumference of the wire pulling member as the cam follower surface slides on the cam surface in accordance with movement of the cam member.

Abstract: An endoscope includes an image pickup module having an optical axis that defines a visual field direction and provided with an electric contact, a cable that is disposed on a proximal end side of the image pickup module and transfers an image pickup signal generated by the image pickup module, a channel provided beside the image pickup module, and a movable board electrically connecting the electric contact and the cable to transfer the image pickup signal and including a movable portion capable of forming a curved surface that is freely displaceable in an optical axis direction. The movable portion of the movable board is arranged at a position where a distance between the curved surface and the channel is longer than a distance between the curved surface and the optical axis.

Abstract: An insertion apparatus in the invention includes: a multi-lumen tube provided in an insertion portion and formed in a bendable manner, the insertion portion being inserted into a subject, a distal end member arranged so as to cover a distal end of the multi-lumen tube; a braided tube into which the multi-lumen tube is inserted, a distal end edge portion of the braided tube being disposed between the distal end member and the multi-lumen tube; and a wire configured to bend the multi-lumen tube by traction, in which the braided tube includes a gap through which the wire passes from an outside of the braided tube to an inside of the braided tube.

Abstract: An endoscope system includes: a first endoscope including an insertion section, an operation section, and a bending operation device; a second endoscope including an insertion section, an operation section, and a bending operation device; and a fixing member configured to connect and fix the operation sections to each other such that the bending operation device of the first endoscope is made to protrude toward the operation section of the second endoscope, the bending operation device of the second endoscope is made to protrude toward the operation section of the first endoscope, and the bending operation device of the second endoscope is spaced apart from the bending operation device of the first endoscope toward an insertion section side.

Abstract: An insertion device includes: a tube having a channel hole and a communication hole; a frame member having a tube insertion hole and a forceps channel and disposed to cover a periphery of the communication hole; and a closing member configured to close the channel hole in the tube at a position closer to a proximal end side than the communication hole and having a distal end surface disposed to face the communication hole.

Abstract: A plug of a connector for connecting an optical waveguide provided in a medical instrument includes: a coupling portion configured to be inserted into a receptacle of the connector; a connecting surface formed at an end in a first direction in which the coupling portion is inserted into the receptacle; an opening portion provided on the connecting surface, the opening portion having a recessed shape; and a holding portion configured to hold the optical waveguide such that an end face of the optical waveguide is directed in the first direction. The holding portion and the optical waveguide are disposed on a side of a second direction with respect to the connecting surface, the second direction being opposite to the first direction.

Abstract: An insertion device includes: a tube having a first hole extending along a longitudinal axis of an insertion portion inserted into a subject and a second hole communicating with the first hole; and a frame member covering a periphery of an opening of the second hole formed on an outer peripheral surface of the tube, wherein the frame member includes a forceps channel which includes a first conduit including a first tubular path forming a first angle being an acute angle to the longitudinal axis, a second conduit including a second tubular path forming a second angle smaller than the first angle to the longitudinal axis, and an intermediate conduit including an intermediate tubular path, and the forceps channel includes a plurality of bent regions, and curvature centers of the plurality of bent regions are disposed in different directions with respect to the forceps channel.

Abstract: A bending operation mechanism of an endoscope including: a first pulley configured to pull a first wire by being rotated in a first rotation direction; a second pulley, which is coaxial with the first pulley, configured to pull a second wire by being rotated in a second rotation direction opposite to the first rotation direction; and a rotation shaft member including a first protrusion that engages only with the first engagement portion of the first pulley when the rotation shaft member is rotated in the first rotation direction from a neutral position when a bending portion is not bent and a second protrusion that engages only with the second engagement portion of the second pulley when the rotation shaft member is rotated in the second rotation direction from the neutral position.

Abstract: A wire fixing structure includes: a first hole portion through which a wire passes; and a second hole portion which is formed in a direction orthogonal to the first hole portion and communicates with the first hole portion. The wire includes: a first portion which is inserted into and is disposed in the first hole portion; a second portion which is extended from the first hole portion and wound around the outer peripheral portion of a wire fixing member; and a third portion which is inserted into and is disposed in the first hole portion again after the second portion is wound around the outer peripheral portion. The fastening member is inserted into the second hole portion and fixes the first portion and the third portion by pressing in the first hole portion.

Abstract: A medical device includes an operation portion, an insertion portion that is insertable into a treatment instrument insertion channel of a mother endoscope, and a mounting portion provided at an operation portion to detachably mount the operation portion onto a bending operation member of the mother endoscope.

Abstract: An operation section includes a pressing member, a stopper, a lever fixing member and, an exterior member. The lever fixing member is positioned with respect to the exterior member such that a projecting portion is continuously brought into contact with the exterior member when the lever fixing member is rotated, and a recessed portion which changes a contact state of the projecting portion with respect to the exterior member along with the rotation of the lever fixing member is formed in the exterior member.