Abstract: A medical observation system includes: a microscope; a support including a first joint configured to hold the microscope such that the microscope is rotatable about a first axis parallel to an optical axis of the microscope; and a first arm configured to hold the first joint and extend in a direction different from a direction of the optical axis of the microscope; a light guide cable inserted in the support and configured to guide illumination light to the microscope; and a binder configured to bind the light guide cable, wherein at least a part of the light guide cable is arranged along the first axis in a first section, the light guide cable extends in a direction different from the first axis in a second section, and the binder is configured to bind the light guide cable in the second section.

Abstract: The endoscope of the invention includes: an insertion portion; a multi-lumen tube including bending operation wire insertion holes; bending operation wires inserted into the bending operation wire insertion holes; a wire retaining member including two opening portions; a pressing member that presses a distal end surface of the multi-lumen tube through the wire retaining member; a treatment instrument insertion channel; a distal end rigid member including a through hole; and a pipe member. A contact area of the wire retaining member with a distal end surface of the multi-lumen tube is set to be larger than a contact area of a pressing member with the wire retaining member. The pressing member is disposed between the two opening portions of the wire retaining member. The wire retaining member includes a pipe holding portion that holds the pipe member and is held between the distal end rigid member and the multi-lumen tube.

Abstract: A rigid endoscope including: a shaft; a body disposed at a proximal end of the shaft, a fiber image guide mounted to move longitudinally within the shaft and body; a securing section for securing the fiber image guide, the securing section being positioned within the body; a sliding element mounted to move longitudinally within the body; and a protective sheath encasing the fiber image guide; wherein the fiber image guide is twisted, for image rotation, in a longitudinal portion corresponding to the protective sheath.

Abstract: An endoscope includes: a rigid distal structure portion; a rotational portion; an exterior member; a bearing opposed to the exterior member and recessed from an outer surface of the distal structure portion, the bearing being; and a preventing portion. The bearing is configured to receive and support the rotational shaft and to displace the rotational shaft from the distal structure portion by the exterior member being removed from the distal structure portion. The preventing portion provided on one of the rotational portion and the distal structure portion, and configured to prevent disengagement of the rotational portion by coming in contact with the other of the rotational portion and the distal structure portion when the rotational shaft is displaced from the bearing.

Abstract: An endoscope valve for switching connection states of a plurality of conduits formed in an endoscope includes: a cap including a leak hole through which a gas flowing via the conduit is dischargeable to an outside; and a shaft whose one end is connected to the cap, the shaft having a rod shape, extending in a longitudinal direction, and including: a main body portion including a hole portion forming a hollow space and a communication hole extending in a direction intersecting the longitudinal direction of the shaft and communicating with the hole portion and an outside; and a seal member including a protrusion portion provided in the hole portion and the communication hole, the protrusion portion protruding in the intersection direction from the communication hole.

Abstract: An in-vivo camera device and an in-vivo monitoring camera system more excellent in usability are proposed. An in-vivo camera device includes a camera unit introduced into a body, a support member, and a camera-side cable. The support member has a trocar connection portion for connection with a trocar at a front end side, and is connected to the trocar in a state in which the trocar connection portion is fitted into the trocar by applying tensile force to the camera-side cable passing through the trocar. The support member is provided with a guide introduction portion that is formed to be relatively long at the front end side as a stabilization structure for stabilizing connection with the trocar.

Abstract: An endoscope system includes an illuminator comprising a light source adapted to emit light of a light amount corresponding to a magnitude of supply energy, the illuminator configured to emit the light in a form of illumination light for illuminating a subject; an imager configured to image the subject to acquire an image; a controller configured to control the illuminator by adjusting the magnitude of the supply energy within a range less or equal to a maximum supply value, to bring brightness of the illumination light close to a target value; and a setter configured to set the maximum supply value according to a temperature of the light source.

Abstract: A bending operation device includes a bending operation lever, a wire pulling member, bending operation wires, and tubular members. The bending operation lever is tiltably supported to have an angle with respect to a longitudinal direction of an operation unit of an endoscope. The wire pulling member includes arm portions displaced in conjunction with tilt motion of the bending operation lever. The bending operation wires are connected to the arm portions. The bending operation wires cause bending motion of a bendable part disposed in an insertion section of the endoscope. A respective one of bending operation wires is inserted in each of the tubular members. The tubular members (i) change extension directions of the plurality of bending operation wires and (ii) guide the plurality of bending operation wires to the plurality of arm portions.

Abstract: An endoscope includes a first pulling section, an first elongated member, a restricting portion, a sliding surface, and a partition. The restricting portion is provided inside the operation section, and is configured to restrict a position of the first pulling section. The sliding surface is provided in the restricting portion, and allows the first pulling section to move along the axial direction. The partition covers at least a part of the sliding surface and the first pulling section, and is configured to partition the first elongated member and the first pulling section. The partition and the restricting portion are configured to restrict a moving range of the connection portion within a range of the sliding surface.

Abstract: The invention relates to an endoscope having an endoscope head and an Albarran lever that is attachable to the endoscope head. The Albarran lever has the following: a tool guide surface with which a tool that is guidable through a working channel of an endoscope may come into contact, and a detent device for form-fit locking to a force transmission section of the endoscope head of the endoscope that is actuatable from a proximal side of the endoscope, wherein the force transmission section transmits a force to the Albarran lever in order to pivot the Albarran lever.

Abstract: An endoscope apparatus includes a removable optical adaptor and a main body optical system. The optical adaptor includes an aperture and includes a first group optical system having a negative combined focal length as a whole and a second group optical system having a positive combined focal length as a whole in order from an object side. The main body optical system includes an imaging lens configured to form an image of a light flux on an image pickup device, the light flux being transmitted through the adaptor from the object. The first group optical system includes a lens having an Abbe number of 35 or higher, and the second group optical system includes a lens having an Abbe number of 45 or lower.

Abstract: An endoscope includes a sensor, and a temperature compensation circuit configured to perform temperature compensation of an output signal of the sensor, in a distal end portion. The temperature compensation circuit includes a differential amplifying section configured to amplify an output signal of the sensor, and a temperature sensing section in which a resistance is connected in series to a parallel connection portion of a temperature sensing element and a resistance.