Abstract: A two-part bending endoscope includes: a first bending part which configures one side of a bending portion; a second bending part which configures the other end side of the bending portion; and a bending portion operation apparatus including a first operation device for causing the first bending part to perform a bending action and a second operation device for causing the second bending part to perform a bending action, wherein the bending portion operation apparatus includes a selective power-transmitting mechanism section which enables at least a bending action of the first bending part by the first operation device, and an interlocking operation of the second bending part and the first bending part by the second operation device.

Abstract: In an endoscope system including a plurality of endoscopes including insertion portions having different diameters, each of the plurality of endoscopes includes a first bending portion subjected to bending operation to actively bend, a second bending portion passively bent by external force, a flexible tube portion having rigidity higher than rigidity of the second bending portion, and a bending portion including the first bending portion and the second bending portion. In the plurality of endoscopes, a relation among lengths of the second bending portions is set to be contrary to a size relation among insertion portion diameters.

Abstract: The invention is related to a medical device for conducting a medical examination and/or intervention within a human or animal body the medical device (1) comprising an elongate body (2) which is designed for introduction into an orifice (15) of the human or animal body the elongate body (2) comprising a distal end (3), which is on the front side of the elongate body during introduction into the orifice (15), of the human or animal body and a proximal end (4) on the opposite side, wherein the elongate body is a hollow body comprising a reception chamber (8) in its interior, which reception chamber (8) is arranged for reception of a human finger (9), characterised in that one or more guiding elements (5, 21) for guiding a medical examination and/or intervention component (6) are located on or in the elongate body and at least one image gathering device (7), which is arranged for gathering of images in front of the distal end (3) of the elongate body (2), is arranged on or in the elongate body (2).

Abstract: A steerable device, such as a steerable catheter, may include a control handle and an insertion shaft extending outwardly therefrom. In use, the insertion shaft is navigated to an area of interest for examination and/or treatment thereof. The steerable device may include a steering system that controls the deflection angle of the distal end of the insertion shaft in two or more non-planar directions for navigating the insertion shaft to the area of interest. The steering system may also include a locking mechanism for arresting or partially arresting the movement of the distal end of the insertion shaft in a first direction independent of arresting or partially arresting the movement of the distal end in a second non-planar direction.

Abstract: Rotational shape-memory actuators and associated devices, systems, and methods are disclosed. In some embodiments, a rotational shape-memory actuator includes a first anchor, a second anchor, a spring element extending between the first and second anchors, a first shape memory element extending between the first and second anchors, a second shape memory element extending between the first and second anchors, and a communication line wrapped around the first and second shape memory elements. The first and second shape memory elements are configured to transition between a first configuration in which the first and second shape memory elements are twisted together and a second configuration in which the first and second shape memory elements are less twisted together such that transitions of the first and second shape memory elements between the first and second configurations cause the second anchor to rotate with respect to the first anchor.

Abstract: In the present invention, a logical block of an FPGA is configured by a serial communication unit, a serial communication control portion, an EEPROM controller, an abnormal signal processing portion, an LED controller, an operation mode controller, a DPRAM, a clutch signal input portion, a jig substrate input output portion, a RAM, a motor controller, a motor drive waveform generating portion, an RL (right and left) motor current F/B portion, a UD (up and down) motor current F/B portion, a potentiometer control portion, a thermistor control portion, an RL encoder control portion, a UD encoder control portion, and an FPGA block abnormality monitoring portion.

Abstract: An endoscopic imaging system includes a reusable control cabinet having a number of actuators that control the orientation of a lightweight endoscope that is connectable thereto. The endoscope is used with a single patient and is then disposed. The endoscope includes an illumination mechanism, an image sensor and an elongate shaft having one or more lumens located therein. A polymeric articulation joint at the distal end of the endoscope allows the distal end to be oriented by the control cabinet. The endoscope is coated with a hydrophilic coating that reduces its coefficient of friction and because it is lightweight, requires less force to advance it to a desired location within a patient.

Abstract: An endoscope shaft made of a composite tube comprises an external tube and an internal tube which is softer and more resilient compared to the external tube as well as a helical spring for stiffening the composite tube. According to the invention, the helical spring in the relaxed state has an outer diameter which is larger than the inner diameter of the internal tube. Furthermore the helical spring is inserted in the internal tube preferably loosely at a spring bias, whereby it is radially pressed against the internal tube.

Abstract: A video endoscope system includes a reusable control cabinet and an endoscope that is connectable thereto. The endoscope may be used with a single patient and then disposed. The endoscope includes an illumination mechanism, an image sensor, and an elongate shaft having one or more lumens located therein. An articulation joint at the distal end of the endoscope allows the distal end to be oriented by the actuators in the control cabinet or actuators in a control handle of the endoscope. Fluidics, electrical, navigation, image, display and data entry controls are integrated into the system along with other accessories.

Abstract: A flexible tube portion includes a spiral tube, a first connecting tube which is arranged on a distal end portion side of the spiral tube and a second connecting tube which is arranged on a proximal end portion side of the spiral tube. The spiral tube is movable along an axial direction of the spiral tube with respect to at least one of the first connecting tube and the second connecting tube.

Abstract: A catheter introducer system for endoscopy includes a steering section and a propulsion section located near the end of the catheter that is introduced in a body cavity. The propulsion section is designed to pull the rest of the catheter inside the body cavity, so there is no need to push the catheter along. The propulsion section includes a distal and proximal gripper portion, each of which includes a suction ring extending circumferentially around the catheter. Each suction ring can include a plurality of suction holes disposed either on a recessed portion of the suction ring or on a portion surrounded by a peripheral ridge extending above the outer surface of the suction ring. The suction ring can also include an inflatable member for urging tissue against the perimeter of the suction holes.

Abstract: An operating wire is inserted in a close-contact coil in a bendable tube portion through a flexible tube portion. The close-contact coil is such that a fixed portion is provided at the position of a bending piece which is placed at the most base end of the bendable tube portion, and that a close-contact coil extension portion having been put in a non-fixed state extends from the fixed portion in the bendable tube portion. A part between a fixed portion and the fixed portion of the close-contact coil is a remote control cable for transmitting an amount of pushing and pulling an operating wire when operating an operating wire. A close-contact coil extension portion extended from the fixed portion at the side of a tip end of the close-contact coil functions as a positioning guide section for holding the operating wire so as to prevent the operating wire from being displaced in a circumferential direction.

Abstract: An endoscope system is provided for examination of a hollow body component. The endoscope system includes an endoscope having an outer periphery and a distal end housing a first image lens for receiving images in a first direction. The endoscope defines a hollow channel therethrough. A catheter is received within the channel of the endoscope and has proximate and distal ends. A rear view module is positioned at the distal end of the catheter and includes a second image lens. At least a portion of the module is movable between a first position and a second position wherein the second lens receives images in a second direction at an angle to the first direction.

Abstract: An endoscope includes a flexible tube and a connection mouth ring. The flexible tube includes a helical tube, a braid tube disposed outside the helical tube, and an outer tube disposed outside the braid tube. The endoscope further includes a caulking member which caulks the end of the braid tube from the outside of the connection mouth ring in a state held therebetween. The end of the helical tube is connected by thermal action to the connection mouth ring, and a part where the end of the helical tube is connected to the connection mouth ring is positioned differently along the axis of the connection mouth ring from a part where the end of the braid tube is caulked against the connection mouth ring.

Abstract: An endoscope deflection section frame including a plurality of rings and rivets. Each ring has front ears and rear ears with rivet holes through the ears. The rivets are located in the rivet holes to thereby pivotably connect the rings to one another. Each rivet includes a head at an interior side of an inner one of the ears and an opposite end at an exterior side of an outer one of the ears. The opposite end is welded to the outer ear.

Abstract: Apparatus and methods for extending a tube, the apparatus including a foldable tube having a folded portion inside an unfolded portion of the tube, and a source of fluid coupled to the unfolded portion for providing fluid into the unfolded portion to unfold and extend the folded portion out of the unfolded portion to become an extension of the unfolded portion. The apparatus and methods are useful, inter alia, for cleansing the colon in the normal direction, that is, from the cecum to the anus, using an apparatus that is introduced via the anus. A washing liquid is supplied deep into the colon via the soft feed tube that is inserted via the anus and is extended into the colon by inflation. The washing liquid is then drained out via the anus through a drainage channel.

Abstract: A probe holder having a removable mechanical retention device; a first tube having a longitudinal slot and two opposing notches at each end, the notches configured for engaging the removable mechanical retention device; a second tube having a longitudinal slot and configured for rotational mating with the first tube; a top cap and a bottom cap, each of the top cap and bottom cap being configured for releasably engaging the first tube with the removable mechanical retention device, and for restraining rotation of the first tube when so engaged, while permitting rotation of the second tube relative to the first tube between an open configuration and a closed configuration.

Abstract: The invention relates to a medico-technical device for at least partially introducing into a body passage. Said device comprises an elongate, tubular, flexible internal body (2), an elongate exterior enveloping body (3) which surrounds, at least partially, said internal body (2) on the periphery thereof, and a device (4) for transferring the device (1) from a flexible state to a rigid state and vice-versa. The invention is characterized in that the internal body (2), which is in the form of a double tube (5), comprises an inner tube (6) which forms an inner wall (8) of the internal body (2) and an external tube (7) which forms an external wall (9) of the internal body (2), said external tube (7) surrounding the inner tube (6) in a concentric manner on the periphery thereof.

Abstract: An object of the present invention is to provide a member for a medical device that is imparted with flexibility and has superior damage tolerance even when reduced in thickness. The present invention provides a member for a medical device molded from a material composed of multiple components, wherein at least one of the multiple components is an elastomer, and at least one of the multiple components has rebound resilience of 1% to 30%.

Abstract: A torque-transmitting, variably-flexible insertion device includes a hollow body having a proximal end with an entrance for receiving an instrument and a distal end with a tip for protrusion of the instrument. A vacuum-activated device transitions the hollow body between a relatively flexible condition and a relatively stiff condition. A torque braid transmits torque from the proximal end toward the distal end. A method for transmitting torque and variably flexing the insertion device includes transmitting torque along the hollow body with the torque braid, applying suction to create a vacuum in the hollow body for placing the hollow body in the relatively stiff condition, and relieving the vacuum for placing the hollow body in the relatively flexible condition.

Abstract: A selective cannulation method for a lumenal tissue's branch section includes: a first step for guiding an endoscope having a channel to an aperture section of the lumenal tissue; a second step for inserting a distal end of an endoscopic treatment instrument through the channel into the aperture section of the lumenal tissue; a third step for having the distal end of the endoscopic treatment instrument make contact with a pipe wall extending from the aperture section of the lumenal tissue to the branch section at two opposed points on the pipe wall by deforming the distal end of the endoscopic treatment instrument; a fourth step for sliding and moving the distal end of the endoscopic treatment instrument to the branch section while having the distal end of the endoscopic treatment instrument make contact with the pipe wall; and a fifth step for inserting the distal end of the endoscopic treatment instrument into a predetermined branch lumen divided from the branch section.

Abstract: A needle-coupled parallel mechanism is provided. The needle-coupled parallel mechanism is structurally improved so as to have a broad working area and a high precision. The needle-coupled parallel mechanism comprises a fixedly positioned frame, a main shaft, three first links, three second links, and a needle. The main shaft is arranged so as to be movable relative to the frame. One end of each of the first links is connected to the frame between both ends of the main shaft and the other end thereof is connected to one end of the main shaft. One end of each of the second links is connected to the frame between both ends of the main shaft and the other end thereof is connected to the other end of the main shaft. The needle is linearly movably coupled to the main shaft to perform a predetermined operation on a target object. Each of the first links and the second links has at least three joints selected from a prismatic joint, a 1-axis revolute joint, a 2-axis revolute joint and a spherical joint.

Abstract: A clip device 1 that has a coil-shaped tubular body 6 that is inserted through a curvable treatment instrument insertion channel of an endoscope, the tubular body 6 includes a proximal side coil (first coil) 10 that has a spring constant per unit length of 15 N/mm to 500 N/mm and is disposed on the proximal end side of the tubular body 6; and a distal end side coil 11 that is connected to the distal end of the proximal side coil 10, has a greater inner diameter than the inner diameter of the proximal side coil 10, has a spring constant per unit length of 15 N/mm to 500 N/mm, and has a spring constant that differs from the spring constant of the proximal side coil 10, with the ratio of the spring constants of the proximal side coil 10 and the distal end side coil 11 is greater than 1.0 and less than or equal to 2.0.

Abstract: Methods and apparatus for accessing and treating regions of the body are disclosed herein. Using an endoscopic device having an automatically controllable proximal portion and a selectively steerable distal portion, the device generally may be advanced into the body through an opening. The distal portion is selectively steered to assume a selected curve along a desired path within the body which avoids contact with tissue while the proximal portion is automatically controlled to assume the selected curve of the distal portion. The endoscopic device can then be used for accessing various regions of the body which are typically difficult to access and treat through conventional surgical techniques because the device is unconstrained by “straight-line” requirements. Various applications can include accessing regions of the brain, thoracic cavity, including regions within the heart, peritoneal cavity, etc., which are difficult to reach using conventional surgical procedures.

Abstract: A medical instrument comprising a flexible, filamentous shaft slideably disposed in a sheath, the instrument including an electronic imaging system comprising an image sensor carried on a distal end portion of the instrument. The shaft may be used as a guidewire for a complementary guided device, or it may be used to carry a functional element for performing a procedure at a target site in a patient's body. In other embodiments, the present invention contemplates a flexible sheath, preferably having a simple tubular construction, with an electronic imaging system at its distal end. The sheath is adapted to slideably receive a shaft, preferably a filamentous shaft, that closely fits the sheath. The shaft carries functional element at its distal end. The instruments according to the present invention may include one or more filaments along their length for deflecting an insertable portion of the instrument.

Abstract: An endoscopic instrument for performing surgical procedures. The instrument includes an elongate member having a distal end for insertion into a patient's body and a proximal end opposite the distal end. The member has a distal portion adjacent the distal end and a central portion adjacent the distal portion. The distal portion has a first mechanical stiffness of a stiffness type selected from a tensile stiffness, a compressive stiffness and/or a bending stiffness. The central portion has a second mechanical stiffness of the stiffness type of the first mechanical stiffness. The first mechanical stiffness is different from the second mechanical stiffness.

Abstract: An intraductal insertion device includes a thrust generating section installed at an insertion portion. The thrust generating section is made up of a flexible shaft adapted to rotate clockwise or counterclockwise around a shaft axis. The thrust generating section is configured by winding the shaft axis of the flexible shaft around an axis of the insertion portion in an insertion direction.

Abstract: A video endoscope system includes a reusable control cabinet and an endoscope that is connectable thereto. The endoscope may be used with a single patient and then disposed. The endoscope includes an illumination mechanism, an image sensor, and an elongate shaft having one or more lumens located therein. An articulation joint at the distal end of the endoscope allows the distal end to be oriented by the actuators in the control cabinet or actuators in a control handle of the endoscope. Fluidics, electrical, navigation, image, display and data entry controls are integrated into the system along with other accessories.

Abstract: An articulating mechanism for use in a medical device, such as an endoscope or a catheter, includes a series of stacked links disposed adjacent to one another and movable with respect to each other. Each link includes a front face tapered to a pair of pivot points and a rear face defining a wedge shaped recess for receiving the pivot points of the adjacent link. Pull-wires provide tension and hold the staked links together while also allowing for controlled bending of the distal portion by movement of one or more of the pull-wires.

Abstract: An endoscope has a helical elastic tube constituting a flexible tubular part. The helical elastic tube comprises a dense coil having an initial tension given to at least one part.

Abstract: An endoscope includes a manipulation unit, and an insertion unit which is disposed in continuation to the manipulation unit. The insertion unit contains a bending portion which has a plurality of articulation wheels coupled in succession, two adjacent ones of the articulation wheels being coupled by a shaft member so as to be relatively turnable around the shaft member which crosses the center axis of the bending portion, the bending portion being bent in such a way that a wire which leads to the manipulation unit via the plurality of articulation wheels is tractively manipulated. The shaft member has a guide part formed with an insertional hole through which the wire is inserted, and at least the guide part of the shaft member is turnable around the center axis of the shaft member, to both the two articulation wheels coupled by the shaft member.

Abstract: A self-propelled device for locomotion through a lumen, comprising a set of serially arranged inflatable chambers, and incorporating a number of novel aspects. To enable easy insertion and use, the rigidity of the device is increased by means of rigid inserts in the balloons, or by use of stiff springs between segments. The working channel can be attached to the distal chamber of the device, such that it is pulled from the leading end of the device during inflation, rather than being pulled from the trailing end of the device during deflation. Lumen wall inspection or treatment facilities are enabled by means of a camera or treatment arm mounted between two distally positioned balloons, the device is able to provide observation capabilities to the lumen wall, yet without becoming excessively dirty by exposure to the front end of the device, as in prior art camera units.

Abstract: A video endoscope system includes a reusable control cabinet and an endoscope that is connectable thereto. The endoscope may be used with a single patient and then disposed. The endoscope includes an illumination mechanism, an image sensor, and an elongate shaft having one or more lumens located therein. An articulation joint at the distal end of the endoscope allows the distal end to be oriented by the actuators in the control cabinet or actuators in a control handle of the endoscope. Fluidics, electrical, navigation, image, display and data entry controls are integrated into the system along with other accessories.

Abstract: An electronic endoscope has an insert section to be introduced into a human body cavity. A distal portion of the insert section contains a CCD and a printed circuit board to which the CCD is bonded. In the insert section, a cable bundle being a bundle of coaxial cables extends. Each coaxial cable consists of a signal line, insulation surrounding the signal line, a braided wire surrounding the insulation, and an insulating jacket. The cylindrical braided wire is stranded into a single line, and is soldered as a ground line to a ground terminal of the printed circuit board. The signal line is pulled out of the coaxial cable with a length longer than the ground line. The signal line is soldered to an input/output terminal of the printed circuit board with a larger sag than the ground line.

Abstract: A cannula assembly having a hollow elongate cannula with a proximal end, a distal end, and a central axis. A coiled reinforcing member is disposed along a portion of the hollow elongate cannula and is adapted to provide structural support to the elongate cannula. An intermediate reinforcing band is disposed on the elongate cannula between the proximal end and the distal end to reinforce a perforated section in the wall of the cannula and includes a forward edge, a rearward edge, at least one rib and at least one protrusion extending orthogonally from the forward edge and at least one protrusion extending from the rearward edge. A distal reinforcing band is disposed at the distal end of the elongate cannula and has a plurality of fingers that taper slightly inwardly toward the central axis of the hollow elongate cannula.

Abstract: An endoscope includes a flexible portion extended to a part on a proximal direction side of an insertion main body along a longitudinal axis, and a passive bending portion provided to a distal direction side of the flexible portion in the insertion main body, being more flexible than the flexible portion, and configured to passively bend when external force acts thereon. The endoscope includes an attachment unit which includes a fin portion spirally extended along the longitudinal axis, and through which the insertion section is inserted, and a holding portion provided to the insertion main body, and configured to hold the attachment unit in a state that the attachment unit covers the passive bending portion and that the attachment unit is rotatable about the longitudinal axis with respect to the insertion main body.

Abstract: An endoscopic instrument includes a shank which is bendable in at least one section and an endoscope head forming the distal end of the shank and in which the distal-side interfaces of the instrument are arranged. The endoscope head is bendable and is designed as one piece from an electroactive polymer. Electrodes are arranged in the endoscope head in the polymer, which may be subjected to electrical voltage.

Abstract: Apparatus for accessing a bodily passageway, the apparatus comprising: a flexible tube having a distal end and a proximal end, a longitudinal axis extending between the distal end and the proximal end, and a lumen extending from the distal end to the proximal end, the lumen being sized to receive matter to be transported through the bodily passageway; and an external thread disposed over the distal end of the tube, the external thread having a sufficient structural integrity, and a sufficient surface profile, such that when the tube is disposed in a bodily passageway, rotation of the tube about the longitudinal axis will result in longitudinal motion of the tube along said bodily passageway.

Abstract: A control handle for use with a steerable endoscopic device. The endoscopic device having a pair of control wires to effect steering. The control handle includes a steering mechanism that includes an actuator, such as a control knob, drivingly connected to a drive member, such as a sprocket or drive gear. To transmit force from the drive member to the control wires, a length of transmission structure, such as bead chain, is connected to the proximal ends of the control wires and is engaged with the drive member. In one embodiment, a single-use endoscope may be provided, which includes a control handle, a steerable endoscopic device, and a umbilical cord or communications conduit for functionally connecting the control handle to a control cabinet of an endoscopic imaging system.

Abstract: A molded elastomer for an endoscope is provided, which includes a fluorine-containing elastomer and a filler. The filler includes thermal black in a content of 1 to 10 parts by mass based on 100 parts by mass of the fluorine-containing elastomer, and plate alumina in a content of 2 to 10 parts by mass based on 100 parts by mass of the fluorine-containing elastomer.

Abstract: Methods and devices are provided for controlling movement of a working end of a surgical device configured to be introduced into a body. In one embodiment, a surgical device is provided including a cannulated elongate shaft having a distal working end with a flexible steering platform. The flexible steering platform can includes a plurality of axially aligned links and a plurality of flexible connector elements. Adjacent links can be connected using at least two of the connector elements such that flexing one or more connector elements can bend the steering platform in one or more directions. The surgical device's shaft can be configured to receive a flexible surgical instrument therein such that a working end of the surgical instrument can be received within the steering platform, thereby allowing movement of the surgical instrument's working end to be controlled through movement of the steering platform.

Abstract: An endoscope comprising a flexible catheter probe 1 having a plurality of lumens, a handle 12 provided at the proximal end of the probe, an optical system 6 provided in at least one optical system lumen of the catheter probe 1, at least one working lumen for a surgical instrument and a control element which is fixed to the distal end 20 of the probe or in the proximity thereof for bending the end of the probe and is guided movably in the axial direction at the probe, wherein the optical system 6 which projects beyond the proximal end of the catheter probe 1 is guided in a flexible tube which is elastically resilient in its longitudinal direction and exerts a prestressing on the optical system in the longitudinal direction thereof in a direction towards the translucently closed optical system lumen.

Abstract: An endoscope includes a flexible tube having a helical tube in which a thin strip plate is helically wound, a braid tube covering the outside of the helical tube, and a flexible outer tube covering the outside of the braid tube, a connection mouth ring plastically deformed and fixed to an end of the flexible tube, and a helical tube displacement preventing portion which prevents displacement of the strip plate of the helical tube at the end of the flexible tube to which the connection mouth ring is fixed, when the connection mouth ring is fixed to the end of the flexible tube.

Abstract: A flexible tube portion of an insertion portion of an electronic endoscope and a universal cable each includes a laminated tube member and a corrugated tube connection member. The laminated tube member includes a conductive tube member and an insulating cover covering the conductive tube member. The corrugated tube connection member includes a fixing hole where an end portion of the laminated tube member is inserted. The end portion of the laminated tube member is adhesively fixed. The end portion of the laminated tube member is an electrical connection portion, and the conductive tube member is exposed. The corrugated tube connection member includes a conductive elastic member in the fixing hole. The conductive elastic member electrically connects the electrical connection portion to the corrugated tube connection member. The conductive elastic member is elastically deformable radially and contacts an outer surface of the conductive tube member with a predetermined pressing force.

Abstract: An endoscope with a flexible, multilumen catheter probe, a grip provided at the proximal end of the probe, a control element attached to the distal end of the probe and movably guided in the axial direction on catheter probe, wherein the catheter probe is to be connected non-rotatingly to the grip by means of a releasable lock, the distal end of the optical lumen has a transparent seal, and optical system is displacably disposed inside optic lumen and can be removed from optic lumen.

Abstract: An outer tube for natural orifice surgery. The outer tube can have interchangeable inserts to establish a desired size and number of lumens. A distal tapered soft plastic plug may be provided to cover the distal end of the tube. Different segments of the tube may have different stiffness characteristics.

Abstract: Systems and methods of removing bacterial biofilm from a target site using a biofilm removal endoscope. The endoscope has an insertion portion including an imaging channel terminating at a viewing window and an irrigation channel terminating at a nozzle. The imaging and irrigation channels are permanently affixed relative to one another. The insertion portion is inserted into the patient, with a working end thereof being disposed proximate the target site. The target site is imaged and a flow of fluid is dispensed via the nozzle to mechanically remove bacterial biofilm from the target site.

Abstract: A flexible segment system including: a first link; a first flexible hinge integral to the first link; and a second link integral to and continuing from the first flexible hinge.

Abstract: An apparatus having an elongate hollow metal body extending along a longitudinal axis is disclosed. The hollow body defines a central opening and has a predetermined wall thickness. A pattern of laser cut slits is formed into the body. The slits define a plurality of articulatable elements. The plurality of articulatable elements enable active articulation of the body in a first plane and passive deflection in planes orthogonal to the first plane.

Abstract: An insertion part of an endoscope includes at least a bending portion and two portions connected to one and the other ends of the bending portion. A bending structure of the bending portion is connected at its other end adjoining area overlapping with an adjoining area of at least one of the two portions to the adjoining area of the at least one of the two portions by a fixing member. A thread member wound on an end portion of a flexible covering member covering the bending structure, the end portion corresponding to the fixing member, has a pulled-in part arranged between the outer peripheral surface of that end portion of the cover member and a winding portion formed by the wound thread member, and the pulled-in part is arranged in a side of the fixing member. The winding portion of the thread member is covered by a resin layer.