Abstract: Provided is an endoscope capable of operating a bending part with a higher degree of freedom while enabling a related-art operation of moving a pair of bending operating wires forward and backward. The endoscope has an insertion part having a bendable bending part; an operating part continuously provided on a proximal end side of the insertion part; a pair of bending operating wires inserted into the insertion part and fixed to a distal end side of the insertion part; a first bending operating mechanism that operates the bending part by moving the pair of bending operating wires forward and backward in conjunction with each other; and a second bending operating mechanism that operates the bending part by independently moving the pair of bending operating wires forward and backward.

Abstract: Provided is an endoscope capable of operating a bending part with a higher degree of freedom while enabling a related-art operation of moving a pair of bending operating wires forward and backward. The endoscope has an insertion part having a bendable bending part; an operating part continuously provided on a proximal end side of the insertion part; a pair of bending operating wires inserted into the insertion part and fixed to a distal end side of the insertion part; a first bending operating mechanism that operates the bending part by moving the pair of bending operating wires forward and backward in conjunction with each other; and a second bending operating mechanism that operates the bending part by independently moving the pair of bending operating wires forward and backward.

Abstract: In an endoscope apparatus, a suction button unit (switching valve unit) includes a valve cylinder, a piston rod, a cap device and seal packing. Holes are formed in a piston chamber of the valve cylinder, including a discharge port hole, a suction port hole and an exhaust port hole. The piston chamber includes a piston slide surface and a sliding sealing surface. A passage in the piston rod connects the exhaust port hole with the suction port hole in case the piston rod is in a halfway position, and connects the suction port hole with the discharge port hole in case the piston rod is in a position of full depression. The seal packing, in the halfway position, closes the discharge port hole, and in the position of full depression, causes the discharge port hole to open. Thus, operability and washability of the suction button unit can be high.