Abstract: The LG connector is composed of the proximal portion and the case body. The frame is supported by the proximal portion, and the universal cable and the control cable are fixed to this frame. Watertightness between the universal cable and the case body is maintained at an abutting surface which is orthogonal to the axis thereof, and watertightness between the control cable and the case body is maintained at the outer peripheral surface thereof. Thereby, it is possible to improve the efficiency of the assembly operation without deteriorating the watertightness of the LG connector. Also, the proximal portion is provided with the joint to be connected to the optical apparatus, and on this joint, the light guide bar is projectedly provided. Inside the proximal portion, the guide portion which guides the light guide to the insertion port of the light guide bar is projectedly formed. This guide portion enables the light guide to be easily installed without damaging the light guide.

Abstract: The LG connector is composed of the proximal portion and the case body. The frame is supported by the proximal portion, and the universal cable and the control cable are fixed to this frame. Watertightness between the universal cable and the case body is maintained at an abutting surface which is orthogonal to the axis thereof, and watertightness between the control cable and the case body is maintained at the outer peripheral surface thereof. Thereby, it is possible to improve the efficiency of the assembly operation without deteriorating the watertightness of the LG connector. Also, the proximal portion is provided with the joint to be connected to the optical apparatus, and on this joint, the light guide bar is projectedly provided. Inside the proximal portion, the guide portion which guides the light guide to the insertion port of the light guide bar is projectedly formed. This guide portion enables the light guide to be easily installed without damaging the light guide.

Abstract: The present invention provides a control switch device in which in an endoscope using an electrical control switch to carry out duct control, the conventional operation sense is left, and the flow rate in a duct can be regulated securely. An air/water feed switch portion disposed in an endoscope control section is configured so that a push button, first piston body, and second piston body are moved vertically by using a spring member in an upper and lower support cylinders. The second piston body is operated with an operation stroke which is longer than the stroke of the first piston body, and both of these piston bodies turn on/off an air feed switch and a water feed switch. Also, a suction switch using a pressure-sensitive sensor is used, and this suction switch is turned on/off by the piston body. At this time, in the suction switch, the operation pressure of the push button is detected, and suction of flow rate according to the operation pressure is effected.