An endoscope flexible tube according to the present invention includes: a spiral tube configured such that a belt-like plate is spirally wound; an inner cylindrical member disposed inside an end part of the spiral tube; and an outer cylindrical member that is disposed outside the end part of the spiral tube, and holds the end part of the spiral tube between the inner cylindrical member and the outer cylindrical member. The inner cylindrical member has an outer diameter that is set larger than an inner diameter of the spiral tube, and the end part of the spiral tube is deformed to enlarge the inner diameter of the end part, and is externally fitted to the inner cylindrical member.

An endoscope handpiece and system may include an angle of view selector, a depressible button, which may be connected to a lock disposed within a port of the endoscopic handpiece. The system may further provide an endoscope, which may be connected to the handpiece via the port and locked in place by the lock.

An articulating flexible endoscope is provided. The endoscope comprises: a distal tip portion that is steerable via a driving mechanism; a bending section connected to the distal tip portion at a first end, and connected to a shaft portion at a transition interface, the bending section is articulated by one or more pull wires; and the shaft portion comprising one or more load transmission tubes for reducing at least a portion of the articulation force applied to the bending section by the one or more pull wires thereby improving stability of the shaft portion, the one or more load transmission tubes are anchored to the transition interface and have a length greater than the length of the shaft portion.

An endoscope according to the present invention includes: a bending tube including ring-like members pivotally joined via pairs of pivots facing each other relative to a center axis, the bending tube being bendable; a pair of first pull wire guides projecting inward of a ring-like member; a forceps channel disposed so as to be contactable with the pair of first pull wire guides; and a pair of second pull wire guides being provided so as to project inward of the ring-like member and being disposed so that a distance between distal end portions extending toward an inner circumferential side of the ring-like member is a distance that is smaller than an outer diameter of the forceps channel.

An attachment for an imaging device may include a first sheath including a proximal end, a distal end, and a lumen extending between the proximal end and the distal end; a second sheath positioned around an exterior of the first sheath; and a connector coupled to the first sheath and configured to be coupled to the imaging device.

The cooling unit includes: an opening part through which the cooling media flow in; a first flow path; a second flow path; a first heat generation section; a second heat generation section; a first heat dissipation section that is thermally connected to the first heat generation section, and is disposed in the first flow path; and a second heat dissipation section that is thermally connected to the second heat generation section, and is disposed in the second flow path. The second flow path is disposed between the first and second heat generation sections and the first flow path, and the first heat dissipation section has a thermal resistance value smaller than a thermal resistance value of the second heat dissipation section.

An optical unit 1 includes a voice coil motor 10 which can relatively move a movable part 3 with respect to a fixed part 2 in the axis C direction by using a coil 11 arranged on the fixed part 2 and a magnet 12 arranged on the movable part 3, wherein the movable part 3 includes a movable-side sliding surface which can slide over an inner periphery of the fixed part 2, and a distance L1 from a position closest to an object side to a position closest to an image side of the movable-side sliding surface in the axis C direction of the movable part 3 is greater than a distance from an emission surface of the object-side fixed lens group Gf held by the fixed part 2 to an incident surface of the image-side fixed lens group Gb held by the fixed part 2.

An endoscope system for use with a light guide having an endoscope; and a reflector configured for placement between the endoscope and the light guide. The reflector has a translucent portion for transmitting light from the light guide and a reflective portion for reflecting light from the light guide back into the light guide.

Provided is an endoscope system that inexpensively guides an extra-fine endoscope using an overtube. An endoscope system includes an endoscope and an overtube. The overtube includes an endoscope channel that allows passage of the endoscope, being bendable according to an operation. The endoscope includes a light irradiation unit and an imaging unit.

An endoscopic instrument (1, 134), for inserting into a body of a patient, includes a tubular shank (3, 47, 137) which is coupled or can be coupled to a handling device (5, 135), and at least two electrical, mechanical and/or optical leads (11, 13, 15, 19, 57, 59, 65, 67, 123, 181) which run through the shank (3, 47, 137). The handling device (5, 135) includes a housing (23) which at a proximal end has two limbs (141, 143) which are arranged obliquely to one another and enclose a contact surface (145). At least one of the leads (11, 13, 15, 19, 57, 59, 65, 67, 123, 181) is led outwards out of the handling device (5, 125) out of one of the limbs (141, 143).