Abstract: A suction system of an endoscope includes a branch conduit including a suction pipe sleeve branching from a main conduit; a suction path provided in the suction pipe sleeve and including a first opening communicating with the main conduit; a working channel including an insertion path communicating with the main conduit; and a liquid feed tube inserted through the main conduit and the working channel. A first minimum length A, a maximum length B, and a second minimum length C have a dimensional relation of C?B<(A?B)/2, the first minimum length A passing through a first center on a plane of the first opening, the maximum length B passing through a second center on a cross section orthogonal to a longitudinal direction of the liquid feed tube, the second minimum length C passing through a third center on a cross section orthogonal to a longitudinal direction of the insertion path.

Abstract: A charging control system includes a lawn mower that includes a battery and performs a lawn mowing work while traveling autonomously, and a charging station for charging the battery. The lawn mower includes a superimposing unit for superimposing, on a charging current, a current indicating period information for defining a shutoff period of supply power to be supplied from the charging station. The charging station includes a current detector for detecting the charging current, an information acquisition unit for acquiring period information based on a detection result of the current detector, a switch for shutting off the supply power, and a shutoff controller for controlling the operation of the switch. The shutoff controller releases the shutoff of supply of power to the lawn mower based on the period information acquired by the information acquisition unit. Therefore, the power consumption of the lawn mower can be reduced.

Abstract: A conduit connection device comprises a plurality of fluid circulation lines, each of the plurality of fluid circulation lines having a conduit, a plurality of relay fluid circulation lines, each of the plurality of relay fluid circulation lines having a relay fluid conduit, a plurality of conduit connectors, and interference components are attached to the conduit connectors such that, in a first connection combination, the conduit connectors on a first end of each of the plurality of fluid circulation lines cooperate with the conduit connectors on a first end of each of the plurality of relay fluid circulation lines to connect respective fluid circulation lines to respective relay fluid circulation lines, and wherein, in other than the first connection combination, the plurality of interference components prevent connecting at least one of the plurality of fluid circulation lines to at least one of the plurality relay fluid circulation lines.

Abstract: An insertion instrument comprises an insertion portion, an operation portion located proximally relative to the insertion portion. The operation portion includes a housing having an exterior body, a light source apparatus located inside the exterior body, a conduit for a fluid. The conduit includes a first portion located outside the exterior body, a second portion located inside the exterior body and in contact with an outer surface of the light source apparatus.

Abstract: A conduit switching device includes a body, an endoscope connection port, a fluid supply port, a fluid suction port, a first conduit in the body and the fluid supply port, a second conduit in the body and the fluid suction port, a common conduit in the body and the endoscope connection port, and a switching mechanism configured to be switched between a first state and a second state. In the first state, the first conduit communicates with the common conduit, and the second conduit does not communicate with the common conduit. In the second state, the first conduit does not communicate with the common conduit, and the second conduit communicates with the common conduit.

Abstract: An insertion instrument comprises an insertion portion including a bending portion provided at a distal end side of the insertion portion, a first wire provided in the insertion portion, and an operation portion provided at a proximal end side of the insertion portion. The operation portion includes a bending operation unit. The bending operation unit includes a lever having a central shaft defining a central axis, a rotor coupled to the lever, a wire attachment surface to which the first wire is attached. An inner surface of the operation portion includes a receiver body and a restriction body. The receiver body supports the rotor for rotation about the central axis and for movement of the lever from a neutral position to an inclined position, where, in the inclined position, the central shaft is inclined relative to the central shaft in the neutral position. Movement of the lever from the neutral position to the inclined position pulls the first wire to bend the bending portion.

Abstract: Insertion device according to an aspect of the present disclosure includes: an insertion device, comprising an insertion portion configured to be inserted into a subject. At least one traction member configured to pull a distal end side portion of the insertion portion. An operation portion provided on a proximal end side of the insertion portion. At least one sheath member inserted through the insertion portion, wherein the at least one traction member is inserted through an inner channel in the at least one sheath member. A rotating member to which one end of the at least one traction member is connected, the rotating member configured to rotate, with an external operation force, around a first axis of a first shaft member provided in the operation portion.