WO2021193693A1

WO2021193693A1 - Endoscope

Info

Publication number: WO2021193693A1
Application number: PCT/JP2021/012150
Authority: WO
Inventors: 原田　高志
Original assignee: 富士フイルム株式会社
Priority date: 2020-03-27
Filing date: 2021-03-24
Publication date: 2021-09-30
Also published as: DE212021000350U1

Abstract

Provided is an endoscope that is capable of maintaining a constant positional relationship between the position of a raising stand and the position of an operation member. The endoscope is provided with an operation part to which an operation member is provided, an insertion part which is provided on the distal end side of the operation part and is inserted into the body of a subject, a raising stand which is provided to the distal end of the the insertion part, a wire which has the distal end side thereof connected to the raising stand and which is inserted into the interior of the insertion part, a link member which is coupled to the operation member, and a detachable wire fixing member which fixes the proximal end side of the wire and which couples the link member and the wire, wherein the operation member is provided with: an operation action region for causing the orientation of the raising stand to change; and an operation offset region for moving the link member to a linking offset region so as to couple the link member and the wire via the wire fixing member, the operation offset region being positioned at the side beyond the maximum lowering position in the operation action region.

Description

Endoscope

The present invention relates to an endoscope, and particularly relates to an endoscope provided with a stand on the tip side of an insertion portion to change the direction in which the treatment tool is taken out.

In the endoscope, various treatment tools are introduced from the treatment tool introduction port provided in the operation part, and this treatment tool is taken out from the treatment tool outlet opened at the tip of the insertion part and used for treatment. ing. For example, in a duodenal endoscope, a treatment tool such as a guide wire or a contrast tube is used. Treatment tools such as puncture needles are used in ultrasonic endoscopes. In other direct speculums and perspective mirrors, treatment tools such as forceps or snares are used. Such a treatment tool needs to change the lead-out direction at the tip in order to treat a desired position in the subject. Therefore, the tip body of the tip is provided with a stand for changing the direction in which the treatment tool is taken out. The endoscope is provided with a treatment tool standing mechanism that displaces the posture of the standing table between the standing position and the lying position.

The endoscopes of Patent Document 1 and Patent Document 2 include a stand arranged on the tip side of the work channel, a wire whose tip side is connected to the stand and whose base end side is fixed to a collet, and a tip side. It includes a rod that is connected to an operating member and whose base end side is connected to a collet.

According to the endoscopes of Patent Document 1 and Patent Document 2, by operating the rod with the operating member, the rod pushes and pulls the wire through the collet to change the posture of the standing table between the standing position and the lying position. Displace between.

U.S. Patent Application Publication No. 2007/099500 U.S. Patent Application Publication No. 2018/1684335

However, when the wire is inserted from the tip and fixed by the collet on the side of the proximal end as in the endoscopes of Patent Document 1 and Patent Document 2, the wire is fixed regardless of the position of the standing table. It ends up. Therefore, there is a concern that the positional relationship between the position of the standing table and the position of the operating member changes each time the wire is fixed.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an endoscope capable of making the positional relationship between the position of the standing table and the position of the operating member constant.

The endoscope of the first aspect has an operation portion provided with an operation member, an insertion portion provided on the tip side of the operation portion and inserted into a subject, and a treatment tool provided on the tip portion of the insertion portion. The standing table, the standing operation wire whose tip side is connected to the treatment tool standing table and inserted into the insertion portion, the link member connected to the operating member, and the base end side of the standing operation wire are fixed and linked. An endoscope including a detachable wire fixing member for connecting a member and an upright operation wire, wherein the operation member moves a link member in the longitudinal axis direction of the upright operation wire to treat the wire fixing member. An operation area for changing the posture of the treatment tool stand by moving it in the fixing operation area between the first position corresponding to the maximum tilting position of the tool stand and the second position corresponding to the maximum standing position, and an operation area for changing the posture of the treatment tool stand. The link member is moved to the link offset region connecting the link member and the standing operation wire by the wire fixing member, and includes an operation offset region located on the side beyond the maximum lodging position of the operation region. According to the first aspect, the positional relationship between the position of the standing table and the position of the operating member can be made constant.

In the endoscope of the second aspect, the operation unit is provided with an index for identifying whether the operation member is an operation operation area or an operation offset area. According to the second aspect, it is possible to identify whether the operating member is located in the operating operating region or the operating offset region.

In the endoscope of the third aspect, the operation unit is provided with a rotation side protrusion that moves in synchronization with the rotation of the operation member and a fixed side protrusion that is fixed to the operation member to operate the operation member. Therefore, when the operation operation area and the operation offset area are switched, the rotating side protrusion and the fixed side protrusion come into contact with each other and get over the fixed side protrusion to generate a click feeling. According to the third aspect, it is possible to identify whether the operating member is located in the operating operating region or the operating offset region.

In the endoscope of the fourth aspect, at least one of the rotating side protrusion and the fixed side protrusion is composed of an elastic member. According to the fourth aspect, a click feeling can be easily generated.

The endoscope of the fifth aspect has an operation portion provided with an operation member, an insertion portion provided on the tip side of the operation portion and inserted into a subject, and a treatment tool provided on the tip portion of the insertion portion. The standing base, the standing operation wire whose tip side is connected to the treatment tool standing base and inserted into the inside of the insertion portion, the root link member whose one end is connected to the operating member, and the root link member according to the operation of the operating member. A link member that can move in the longitudinal axis direction of the standing operation wire and a detachable wire fixing member that fixes the base end side of the standing operation wire and connects the link member and the standing operation wire are provided. In the endoscope, the link member can be attached to and detached from the other end of the root link member, and the wire fixing member is the first position corresponding to the maximum lodging position of the treatment tool standing table and the second position corresponding to the maximum standing position. A link member that has a fixing operation area that can be moved between the two and a fixing offset area that is located on the side that exceeds the maximum lodging position with respect to the fixing operation area, and is connected to the standing operation wire by a wire fixing member. Can be mounted on the other end of the root link member when the wire fixing member is present in the fixing operating region, and is the other end of the root link member when the wire fixing member is present in the fixing offset region. Has a length that cannot be attached to. According to the fifth aspect, the positional relationship between the position of the standing table and the position of the operating member can be made constant.

In the endoscope of the sixth aspect, the wire fixing member has an abutting surface that abuts against the base end surface of the standing operation wire. According to the sixth aspect, the standing operation wire can be moved in the lodging direction of the treatment tool standing table.

In the endoscope of the seventh aspect, the link member is arranged outside the operation unit. According to the seventh aspect, the linear shape becomes easy.

According to the endoscope of the present invention, the positional relationship between the position of the standing table and the position of the operating member can be made constant.

FIG. 1 is a block diagram of an endoscope system including an endoscope. FIG. 2 is a perspective view of assembling the tip portion. FIG. 3 is an explanatory diagram for explaining the operation of the treatment tool standing table of the first embodiment. FIG. 4 is an explanatory diagram for explaining the operation of the treatment tool standing table of the first embodiment. FIG. 5 is an explanatory diagram for explaining a procedure for connecting the standing operation wire and the link member by the wire fixing member of the first embodiment. FIG. 6 is an explanatory diagram for explaining a procedure for connecting the standing operation wire and the link member by the wire fixing member of the first embodiment. FIG. 7 is an explanatory diagram for explaining a procedure for connecting the standing operation wire and the link member by the wire fixing member of the first embodiment. FIG. 8 is an explanatory diagram for explaining the action of the offset of the first embodiment. FIG. 9 is an explanatory diagram illustrating the positional relationship between the standing operation lever of the first embodiment and the index provided on the operation unit. FIG. 10 is a perspective view of a main part of a rotary seat that rotatably supports the rotary ring of the first embodiment. FIG. 11 is an assembly drawing of the wire fixing member. FIG. 12 is a diagram showing a procedure for fixing the standing operation wire and the link member by the wire fixing member. FIG. 13 is a diagram showing a procedure for fixing the standing operation wire and the link member by the wire fixing member. FIG. 14 is a diagram showing a procedure for fixing the standing operation wire and the link member by the wire fixing member. FIG. 15 is a diagram showing a procedure for fixing the standing operation wire and the link member by the wire fixing member. FIG. 16 is a diagram showing a procedure for fixing the standing operation wire and the link member by the wire fixing member. FIG. 17 is an explanatory diagram for explaining the operation of the treatment tool standing table of the second embodiment. FIG. 18 is an explanatory diagram for explaining the operation of the treatment tool standing table of the second embodiment. FIG. 19 is an explanatory diagram for explaining a procedure for connecting the standing operation wire and the link member by the wire fixing member of the second embodiment. FIG. 20 is an explanatory diagram for explaining a procedure for connecting the standing operation wire and the link member by the wire fixing member of the second embodiment. FIG. 21 is an explanatory diagram showing a method of fixing the link member to the operation unit. FIG. 22 is an explanatory diagram for explaining the operation of the treatment tool standing table of the modified example of the second embodiment. FIG. 23 is an explanatory diagram for explaining the operation of the treatment tool standing table of the modified example of the second embodiment. FIG. 24 is an explanatory diagram for explaining a procedure for connecting the standing operation wire and the link member by the wire fixing member of the modified example of the second embodiment. FIG. 25 is a perspective view of a connecting member of a modified example of the second embodiment. FIG. 26 is a perspective view of the wire fixing member and the connecting member of the modified example of the second embodiment.

Hereinafter, preferred embodiments of the endoscope of the present invention will be described with reference to the accompanying drawings. As used herein, "containment" includes the case of completely accommodating and the case of accommodating only a part.

(First Embodiment)
FIG. 1 is a block diagram of an endoscope system 12 including an endoscope 10 according to an embodiment of the present invention. The endoscope system 12 includes an endoscope 10, an endoscope processor device 14, and a display 18.

The endoscope 10 includes a hand operation unit 22 provided with a standing operation lever 20 and an insertion unit 24 having a base end portion connected to the hand operation unit 22 and inserted into a subject. The standing operation lever 20 is an example of the operation member of the present invention.

The insertion portion 24 has a long axis direction Ax from the proximal end portion to the distal end portion, and includes a soft portion 26, a curved portion 28, and a tip end portion 30 in this order from the proximal end side to the distal end side. The detailed configuration of the tip portion 30 will be described later, but first, a schematic configuration of the tip portion 30 will be described.

FIG. 2 is an enlarged perspective view of the tip portion 30. Here, the endoscope 10 of the embodiment (see FIG. 1) is a lateral endoscope used as, for example, a duodenal endoscope, and the tip portion 30 of FIG. 2 has a configuration of a lateral endoscope. ..

As shown in FIG. 2, the tip portion 30 is configured by attaching a cap 34 to the tip portion main body 32. The cap 34 is provided with a treatment tool standing table 36 (hereinafter, standing table 36) having a treatment tool guiding surface 36A, and shows a state in which the standing table 36 is positioned in an inverted position.

FIG. 2 shows various contents arranged inside the insertion portion 24 of the endoscope 10 (see FIG. 1) in addition to the tip portion 30. That is, a standing operation for changing the lead-out direction of the treatment tool channel 37 that guides the tip of the treatment tool (not shown) to the tip body 32 and the tip of the treatment tool that is led out from the tip body 32. A wire 38 (hereinafter referred to as a wire 38), a wire channel 40 through which the wire 38 is inserted, an air supply / water supply tube 42, and a cable insertion channel 44 are shown. Further, a light guide (not shown) that guides the illumination light supplied from the light source device 15 (see FIG. 1) to the tip body 32, and an angle wire (not shown) for bending the curved portion 28 (see FIG. 1). ) And the like are also arranged inside the insertion portion 24. The wire channel 40 is an example of the wire insertion channel of the present invention, and the wire 38 is inserted and arranged inside the wire channel 40 so as to be able to advance and retreat. The wire channel 40 is arranged from the hand operation unit 22 (see FIG. 1) to the insertion unit 24.

In this specification, a three-dimensional Cartesian coordinate system in the three-axis directions (X-axis direction, Y-axis direction, Z-axis direction) will be described. That is, when the tip portion 30 is viewed from the hand operating portion 22 and the direction in which the treatment tool (not shown) is drawn out by the standing table 36 is the upward direction, the upward direction is the Z (+) direction and the opposite direction. The downward direction is the Z (−) direction. Further, the right direction at that time is the X (+) direction, and the left direction is the X (−) direction. Further, the front direction (the direction toward the tip end side in the long axis direction Ax direction of the insertion portion 24) at that time is the Y (+) direction, and the rear direction (the base end side in the long axis direction Ax direction of the insertion portion 24). Direction) is the Y (-) direction. The Y-axis direction including the Y (+) direction and the Y (−) direction is parallel to the direction of the major axis direction Ax of the insertion portion 24. The Z-axis direction is a direction orthogonal to the long-axis direction Ax. The X-axis direction is a direction orthogonal to the Y-axis direction and the Z-axis direction, respectively.

Returning to FIG. 1, the hand operation unit 22 is configured to have a substantially cylindrical shape as a whole. The hand operation unit 22 has an operation unit main body 46 provided with the standing operation lever 20 and a grip portion 48 connected to the operation unit main body 46. The grip portion 48 is a portion that is gripped by the operator when the endoscope 10 is operated, and the base end portion of the insertion portion 24 is connected to the tip end side of the grip portion 48 via a breakthrough tube 50. The link member 120 is arranged outside the operation unit main body 46 of the hand operation unit 22. The link member 120 moves in conjunction with the operation of the standing operation lever 20. The wire fixing member 80 is accommodated and fixed on the side of the base end of the link member 120. The wire fixing member 80 fixes the wire 38 (not shown), and the wire fixing member 80 fixes the wire 38 and the link member 120.

The base end portion of the universal cable 52 is connected to the operation unit main body 46, and the connector device 54 is provided at the tip end portion of the universal cable 52. The connector device 54 is connected to the endoscope processor device 14. The endoscope processor device 14 includes a light source device 15 and an image processing device 16. The light source device 15 is provided with a processor-side connector 15A to which the connector device 54 is connected. Further, a display 18 for displaying an image processed by the image processing device 16 is connected to the image processing device 16. The endoscope system 12 transmits power, optical signals, and the like between the endoscope 10 and the endoscope processor device 14 via a connector portion composed of a connector device 54 and a processor-side connector 15A. It has a configuration for non-contact transmission. As a result, the light from the light source device 15 is transmitted via an optical fiber cable (not shown) and is emitted from an illumination window 74 (see FIG. 2) provided on the tip surface of the tip portion 30. Further, the optical signal of the image captured from the observation window 76 (see FIG. 2) is image-processed by the image processing device 16 and displayed as an image on the display 18.

Further, the air supply / water supply button 57 and the suction button 59 are arranged side by side on the operation unit main body 46. The air supply / water supply button 57 is a button that can be operated in two stages, and air can be supplied to the air supply / water supply nozzle 58 (see FIG. 2) via the air supply / water supply tube 42 by the first stage operation. Water can be supplied to the air supply / water supply nozzle 58 via the air supply / water supply tube 42 by the operation of the step. Further, when the suction button 59 is operated, body fluid such as blood can be sucked from the treatment tool outlet 60 (FIG. 2) via the treatment tool channel 37.

As shown in FIG. 1, a pair of angle knobs 62, 62 for bending the curved portion 28 are arranged on the operation unit main body 46. The pair of angle knobs 62, 62 are provided coaxially and rotatably. For example, four angle wires (not shown) are connected to the angle knobs 62 and 62 and the curved portion 28, and these angle wires are pushed and pulled by the rotation operation of the angle knobs 62 and 62. The curved portion 28 is curved vertically and horizontally.

Further, the standing operation lever 20 is rotatably provided coaxially with the angle knobs 62 and 62. The standing operation lever 20 is rotationally operated by the operator who grips the grip portion 48. When the standing operation lever 20 is rotated, the link member 120 moves, and the wire fixing member 80 fixed to the link member 120 moves. Since the wire fixing member 80 fixes the wire 38 shown in FIG. 2, this operation pushes and pulls the wire 38. By pushing and pulling the wire 38, the posture of the standing table 36 connected to the tip of the wire 38 is changed between the lodging position shown in FIG. 2 and the standing position (not shown).

As shown in FIG. 1, the grip portion 48 of the hand operation portion 22 includes a treatment tool introduction port 64 for introducing the treatment tool. The treatment tool (not shown) introduced from the treatment tool introduction port 64 with the tip portion at the head is inserted into the treatment tool channel 37 (FIG. 2) and led out from the treatment tool outlet 60 to the outside. Examples of the treatment tool include a biopsy forceps having a cup capable of collecting biological tissue at the tip, a knife for EST (Endoscopic Sphincterotomy), and a contrast tube.

Next, the structure of the tip portion 30 shown in FIG. 2 will be described. First, the tip body 32 will be described.

The tip main body 32 is made of, for example, a metal material having corrosion resistance, and has a partition wall 68 projecting in the Y (+) direction. By attaching the cap 34 to the tip body 32, the standing space (not shown) is defined by the partition wall 68 of the tip body 32 and the wall 34B of the cap 34. A through hole 61 is formed in the tip body 32, and the wire 38 is inserted through the through hole 61.

An illumination window 74 and an observation window 76 are arranged adjacent to each other in the Y direction on the upper surface 68A on the Z (+) side of the partition wall 68. The illumination window 74 can irradiate the visual field region in the Z (+) direction with illumination light, and the observation window 76 can observe the visual field region in the Z (+) direction. The tip main body 32 is provided with an air supply / water supply nozzle 58 toward the observation window 76, and the observation window 76 is cleaned by air and water ejected from the air supply / water supply nozzle 58.

The cap 34 is made of an elastic material, for example, a rubber material such as fluororubber or silicon rubber, and a resin material such as polysulfone or polycarbonate.

The cap 34 includes a wall portion 34B whose tip side is sealed and formed in a substantially cylindrical shape, and a substantially rectangular opening window 34A is formed in a part of the wall portion 34B. The opening window 34A is opened in the Z (+) direction.

The cap 34 is provided with a bearing 34C that rotatably supports the upright stand 36 inside. The bearing 34C has a height in the Z (+) direction and is configured as a plate-like body extending in the Y (+) direction.

The upright stand 36 has a rotating shaft 36B along the X direction, and the rotating shaft 36B is rotatably supported by a through hole (not shown) of the bearing 34C. As a result, the standing table 36 is rotated around the rotation shaft 36B, and its posture is changed between the lying position and the standing position.

The tip of the wire 38 is connected to the stand 36. The wire 38 is connected to the tip side of the upright stand 36 on the side opposite to the side on which the rotation shaft 36B is formed and at a position adjacent to the treatment tool guide surface 36A.

The cap 34 of the embodiment is of a type to which the standing table 36 is attached in advance, and the wire 38 is also connected to the standing table 36 in advance. When the treatment of the endoscope 10 is completed, the cap 34 configured in this way is removed from the tip body 32 and discarded together with the standing table 36 and the wire 38 as, for example, disposable. The standing table 36 may be attached to the tip main body 32 instead of the cap 34.

Based on FIGS. 3 and 4, the operation of the standing operation lever 20 for moving the posture of the standing table 36 between the lying position and the standing position will be described. 3 and 4 show an upright operating lever 20, a wire fixing member 80, a link member 120, and an upright base 36 and a wire 38 in the configuration of the endoscope 10.

As shown in FIGS. 3 and 4, the hand operation unit 22 includes a rotating shaft 102 and a rotating ring 104 rotatably held by the rotating shaft 102 within a certain angle range. The rotation shaft 102 is arranged parallel to the X-axis direction. The standing operation lever 20 has one end of the ring shape, and one end of the ring shape is connected to the surface of the rotary ring 104 facing the X (+) side by a screw or the like. The standing operation lever 20 and the rotary ring 104 are connected, and the rotary ring 104 is rotated about the rotary shaft 102 by the operation of the standing operation lever 20 by the operator.

As shown in FIGS. 3 and 4, the link member 120 includes a rod 122 and a connecting member 124. The rod 122 is composed of a member having a longitudinal axis in the Y-axis direction. The rod 122 is connected to the ring shape of the standing operation lever 20 via the connecting member 106 on the tip side. The rod 122 is connected to the rotary ring 104 via the connecting member 106 and the standing operation lever 20, and the link member 120, the standing operation lever 20 and the rotary ring 104 are connected to each other.

The connecting member 124 is connected to the rod 122 with a screw or the like. The rod 122 and the connecting member 124 integrally form the link member 120. The connecting member 124 accommodates the wire fixing member 80.

The wire 38 is connected to the upright stand 36 on the side of the tip thereof and is guided to the side of the base end of the endoscope 10 (not shown). The wire fixing member 80 fixes the base end side of the wire 38. When fixing the wire 38, the wire fixing member 80 is fixed to the link member 120 via the connecting member 124. Therefore, the wire 38 and the link member 120 are connected and fixed by the wire fixing member 80. The wire fixing member 80 includes an abutting member 90 that abuts against the base end surface of the wire 38.

The operation of moving the standing table 36 between the standing position and the lying position will be described with reference to FIGS. 3 and 4.

As shown in FIG. 3, the standing operation lever 20 is set to the lever tilting position L1 on the base end side (Y (−) side) corresponding to the maximum tilting position of the standing table 36 by the operation of the operator. To position. By operating the standing operation lever 20, the link member 120 connected to the standing operation lever 20 and the rotary ring 104 is located at the link lodging position R1 on the tip side (Y (+) side). The wire fixing member 80 housed in the connecting member 124 of the link member 120 is the tip side (Y (+) side) and is the first position corresponding to the maximum lodging position E1 of the standing table 36. It is located at position F1. When the wire fixing member 80 is located at the fixed lodging position F1, the wire 38 fixed to the wire fixing member 80 is pushed to the tip side (Y (+) side) and is connected to the wire 38. The standing stand 36 is located at the maximum lodging position E1.

As shown in FIG. 4, by the operation of the operator, the standing operation lever 20 is located on the tip side (Y (+) side) and at the lever standing position L2 corresponding to the maximum standing position of the standing table 36. do. By operating the standing operation lever 20, the link member 120 connected to the standing operation lever 20 and the rotary ring 104 is located at the link standing position R2 on the base end side (Y (−) side). The wire fixing member 80 housed in the connecting member 124 of the link member 120 is fixed on the base end side (Y (−) side) and is the second position corresponding to the maximum standing position E2 of the standing table 36. It is located in the standing position F2. When the wire fixing member 80 is located at the fixed standing position F2, the wire 38 fixed to the wire fixing member 80 is pulled to the base end side (Y (−) side) and is connected to the wire 38. The raised stand 36 is located at the maximum standing position E2. The standing table 36 changes its posture in the operating region EA between the maximum lodging position E1 and the maximum standing position E2.

As shown in FIGS. 3 and 4, the standing operation lever 20 includes an operation area LA for changing the posture of the standing table 36. By operating the standing operation lever 20 of the operating operation area LA, the link member 120 is moved in the longitudinal axis direction of the wire 38, and the wire fixing member 80 is moved to the fixed lodging position corresponding to the maximum tilting position E1 of the standing table 36. It is moved between the fixing operation area FA between F1 and the fixed standing position F2 corresponding to the maximum standing position E2 of the standing table 36. The operating operation area LA of the standing operation lever 20 is an area between the lever tilting position L1 and the lever standing position L2. Therefore, by operating the standing operation lever 20 of the operator, the link member 120 moves in the link operating region RA between the link tilting position R1 and the link standing position R2, and the wire fixing member 80 moves in the fixed lodging position F1. The fixing operation area FA between the fixed standing position F2 and the fixed standing position F2 is moved.

Next, a procedure in which the wire fixing member 80 fixes the wire 38 and connects the link member 120 and the wire 38 will be described with reference to FIGS. 5 to 7.

As shown in FIG. 5, the standing operation lever 20 has an operation offset area LF located on the side (Y (−) side) beyond the lever lodging position L1 corresponding to the maximum lodging position of the operation operation area LA. Be prepared. Before fixing the wire 38 with the wire fixing member 80, the standing operation lever 20 is located on the side (Y (−) side) beyond the lever offset position L1 corresponding to the maximum offset position of the operation operating region LA. It is located in the operational offset area LF. The link member 120 connected to the rotary ring 104 by the operation of the standing operation lever 20 is located in the link offset region RF on the base end side (Y (−) side).

When the cap 34 is attached to the tip body 32 (see FIG. 2), the wire 38 connected to the upright stand 36 protrudes from the base end side of the link member 120. The wire fixing member 80 is moved in the direction (Y (+)) toward the connecting member 124 of the link member 120.

As shown in FIG. 6, the wire fixing member 80 accommodates the wire 38, and the base end surface of the wire 38 abuts against the abutting member 90. The position where the base end surface of the wire 38 abuts on the abutting member 90 is not particularly limited. The length of the wire 38 protruding from the link member 120 is determined. The standing operation lever 20 is located in the operation offset region LF.

As shown in FIG. 7, the wire fixing member 80 is further moved to the connecting member 124 in the Y (+) direction. Since the wire 38 is in contact with the abutting member 90, the wire fixing member 80 can push the wire 38 toward the tip end side (Y (+) side). When the wire 38 is pushed in, the standing table 36 is moved to the lodging position.

The wire fixing member 80 moves beyond the fixing operation area FA to the fixing offset area FF and is inserted into the link member 120 located in the link offset area RF. The wire fixing member 80 is rotated about the Y-axis direction as described later, and the wire fixing member 80 fixes the wire 38 and connects and fixes the wire 38 and the link member 120. When the wire fixing member 80 fixes the wire 38, the standing operation lever 20 is located in the operation offset region LF.

After the wire fixing member 80 fixes the wire 38 and fixes the wire 38 and the link member 120, the standing operation lever 20 moves from the operation offset area LF to the operation operation area LA as shown in FIGS. 3 and 4. Will be moved. The standing operation lever 20 is operated in the operation area LA, and the standing table 36 changes its posture in the operation area EA. In the first embodiment, the wire fixing member 80 can move between the fixing operating area FA and the fixing offset area FF by providing the operating operating area LA and the operating offset area LF of the standing operation lever 20.

Since the wire fixing member 80 is positioned in the fixing offset region FF to fix the wire 38, the position of the standing operation lever 20 and the position of the standing base 36 can be made constant.

Next, the offsetting action will be described with reference to FIG.

8-1 is before the wire fixing member 80 is attached, and the standing table 36 is located between the maximum standing position and the maximum lodging position. In 8-1, the soft portion 26 (not shown) is in a looped state. When the flexible portion 26 is looped, the sheath formed of the close contact spring through which the wire 38 is inserted is extended, and the insertion path of the wire 38 is lengthened. Therefore, the wire 38 becomes relatively short. The end EN on the base end side of the wire 38 protruding from the operation unit main body 46 of the hand operation unit 22 may not reach the reference position ST.

In the operation of the standing table 36, the relationship between the movement of the standing operation lever 20 and the standing position and the lodging position of the standing table 36 is determined on the premise that the wire 38 is fixed at the reference position ST.

In the embodiment, as shown in 8-2, when the end portion EN does not reach the reference position ST, the wire fixing member 80 located in the fixing offset region FF fixes the wire 38. The wire fixing member 80 fixes the wire 38 and the link member 120 (not shown). As described with reference to FIG. 7, the standing operation lever 20 is moved to the operation offset region LF, and the link member 120 is located in the link offset region RF. When the wire 38 abuts against the abutting member 90 (not shown) of the wire fixing member 80, the upright stand 36 is moved in the direction of the lodging position as the wire fixing member 80 moves.

Next, as shown in 8-3, when the fixing of the wire 38 and the link member 120 by the wire fixing member 80 is completed, the standing operation lever 20 moves from the operation offset area LF to the operation operation area LA (not shown). Then, the wire fixing member 80 is moved from the fixing offset area FF to the fixing operating area FA. Finally, the wire fixing member 80 can be in the same state as fixing the end EN of the wire 38 at the reference position ST.

As shown in FIGS. 3 and 4, the standing operation lever 20 is operated in the operating operating area LA, the wire 38 is moved in the longitudinal axis direction via the link member 120 and the wire fixing member 80, and the standing table 36 is moved. Changes the posture in the movement area EA.

Even when the flexible portion 26 is looped, the wire fixing member 80 can connect the standing base 36 and the standing operation lever 20 in a fixed positional relationship.

It is preferable that the wire 38 is preliminarily curved in a curved shape on the tip side thereof. The habit of the wire 38 is a direction in which the force of the wire 38 moves the upright stand 36 toward the lodging position. By squeezing the wire 38, the standing table 36 can be moved to the lodging position even when the wire fixing member 80 does not have the abutting member 90. Further, by projecting the wire 38 from the through hole 61 shown in FIG. 2 so as to face the lodging position of the standing table 36, the standing table 36 can be moved to the lying position in the same manner as with the habit.

When the wire 38 is projected from the tip body 32, it is preferable that the wire 38 is projected toward the inverted position of the upright stand 36. Similar to the habitually attached wire 38, the wire 38 can be moved to the lodging position even when the wire fixing member 80 does not have the abutting member 90.

Next, an endoscope capable of identifying whether the standing operation lever 20 is in the operation operation area LA or the operation offset area LF will be described with reference to FIGS. 9 and 10.

FIG. 9 is a drawing of the operation unit main body 46 of the hand operation unit 22 as viewed from Z (−). As shown in FIG. 9, the operation unit main body 46 is provided with an index 47 having a different color from the operation unit main body 46. The index 47 may be, for example, directly written on the operation unit main body 46 with paint or the like, or may be a plate member fixed to the operation unit main body 46. Any means may be used to provide the index 47 on the operation unit main body 46.

In 9-1, the index 47 is provided at the position of the boundary between the operation operation area LA and the operation offset area LF in a straight line extending along the X-axis direction. When the standing operation lever 20 is located on the Y (+) side with reference to the index 47, the standing operation lever 20 is located in the operation operating area LA. On the other hand, when the standing operation lever 20 is located on the Y (−) side with reference to the index 47, the standing operation lever 20 is located in the operation offset region LF.

In 9-2, the index 47 is provided in a band shape extending along the Y-axis direction over the entire operating region LA. When the standing operation lever 20 is located within the range of the index 47, the standing operation lever 20 is located in the operation operating area LA. On the other hand, when the standing operation lever 20 is located outside the range of the index 47, the standing operation lever 20 is located in the operation offset region LF.

By providing the index 47 on the operation unit main body 46, it is possible to recognize whether the standing operation lever 20 is in the operation operation area LA or the operation offset area LF.

FIG. 10 is a perspective view of a main part of the rotary seat 150 that rotatably supports the rotary ring 104.

As shown in FIG. 10, the rotary ring 104 and the rotary seat 150 are arranged at positions facing each other inside the hand operation unit 22. The rotary ring 104 includes a rotary side protrusion 104A that projects toward the seat surface 150A of the rotary seat 150. The rotating side projection 104A is provided on the seating surface 104B of the rotating ring 104 facing the seating surface 150A. The rotation side protrusion 104A moves in synchronization with the rotation of the standing operation lever 20. The rotating side protrusion 104A is composed of a U-shaped leaf spring which is an elastic member.

On the seat surface 150A of the rotary seat 150 facing the rotary ring 104, a fixed side protrusion 152 that defines the lever tilting position L1 of the standing operation lever 20 is arranged. Since the fixed side protrusion 152 is fixed to the standing operation lever 20, it does not move in synchronization with the rotation of the standing operation lever 20.

As shown in FIG. 10, when the standing operation lever 20 is operated toward the lever tilting position L1 corresponding to the maximum tilting position of the standing table 36 within the range of the operating operating area LA, the rotating side projection 104A is operated. Contact the fixed side protrusion 152. As a result, the user who performs the connecting operation can recognize that the standing operation lever 20 is located at the maximum lodging operation position. When the standing operation lever 20 is further operated to the base end side to switch between the operation operation area LA and the operation offset area LF, the rotation side protrusion 104A elastically deforms and gets over the fixed side protrusion 152. It is preferable that either the rotating side protrusion 104A or the fixed side protrusion 152 is an elastic member. By using an elastic member, the rotating side protrusion 104A and the fixed side protrusion 152 can be easily deformed.

After getting over the fixed side protrusion 152, the standing operation lever 20 is located in the operation offset area LF opposite to the operation operation area LA with the fixed side protrusion 152 in between. When the standing operation lever 20 is located in the operating offset region LF, the movement of the standing operating lever 20 to the operating operating region LA is restricted by the fixed side projection 152 and the rotating side projection 104A. Further, when the rotating side protrusion 104A gets over the fixed side protrusion 152, a click feeling is generated. The user can recognize that the standing operation lever 20 is located in the operation offset region LF.

When the standing operation lever 20 located in the operation offset area LF is operated toward the tip side and the operation offset area LF and the operation operation area LA are switched, the rotation side protrusion 104A and the fixed side protrusion 152 are formed. When they come into contact with each other, the rotating side protrusion 104A elastically deforms and gets over the fixed side protrusion 152. When the operating operation area LA and the operating offset area LF are switched, a click feeling occurs when the rotating side protrusion 104A gets over the fixed side protrusion 152, and the user can use the standing operation lever 20 to move to the operating operating area LA. You can recognize that it was located.

An example of the wire fixing member 80 applied to the first embodiment will be described with reference to FIGS. 11 to 16.

Next, the structure of the wire fixing member 80 will be described based on the assembly drawing of FIG. In FIG. 11, the terms “tip side” and “base end side” mean the positional relationship when the wire fixing member 80 is attached to the hand operating portion 22 of the endoscope 10.

As shown in 11-1, the wire fixing member 80 includes a wire gripping member 86, a sliding member 82 accommodating the wire gripping member 86, and holding

members

84 and 88 accommodating the sliding member 82. On the side of the base end of the holding member 88, an abutting member 90 that restricts the movement of the wire gripping member 86 and abuts against the base end surface of the wire 38 is provided. Although the holding member 88 and the abutting member 90 are shown as separate members in FIG. 11, they may be integrally formed of one member.

The sliding member 82 is made of a tubular member and has a through hole penetrating between the base end side and the tip end side. A groove 82A is formed on the outer peripheral surface of the sliding member 82 on the tip end side, and a packing 92 is arranged in the groove 82A. The packing 92 is, for example, an O-ring.

In the sliding member 82, two engaging portions 82B are formed on the outer peripheral surface on the side of the base end side of the groove 82A. The engaging portion 82B projects outward from the outer peripheral surface in the radial direction of the sliding member 82. The sliding member 82 includes a snap restricting member 82C that projects from the engaging portion 82B toward the proximal end along the outer peripheral surface. The sliding member 82 includes a screw portion 82D on the base end side of the snap regulating member 82C. The screw portion 82D is formed in the shape of a male screw in which a screw thread protrudes from the outer peripheral surface.

The holding member 84 is composed of a two-stage tubular member, and has a through hole penetrating between the base end side and the tip end side. The outer shape of the holding member 84 on the tip side is smaller than the outer shape on the base end side. The holding member 84 includes two snaps 84A. The snap 84A has a fixed end that is cantilevered on the proximal side and a free end that extends to the distal end. The snap 84A is configured to be elastically deformable with the fixed end as a fulcrum. The holding member 84 includes a claw portion 84B extending from the base end side of the tubular member toward the base end side.

The wire gripping member 86 has a tubular shape having a tapered surface, penetrates between the tip end side and the base end side, and has a length in the longitudinal axis direction through which the wire 38 (not shown) is inserted. Has holes. The wire gripping member 86 can insert the wire 38. A plurality of slits 86B extending from the base end side to the tip end side along the through hole are formed on the outer peripheral surface of the wire gripping member 86. By tightening the wire gripping member 86, reducing the gaps between the plurality of slits 86B, and reducing the diameter of the through holes, the wire gripping member 86 can fix the wire 38. The wire gripping member 86 has a tapered surface 86A on the outer peripheral surface that expands in diameter toward the proximal end side. The wire gripping member 86 is housed in the sliding member 82 from the side of the base end of the sliding member 82. The gap of the slit 86B is reduced as the sliding member 82 approaches the wire gripping member 86, and the through hole is reduced in diameter. The gap of the slit 86B expands to the original state when the sliding member 82 moves away from the wire gripping member 86, and the through hole expands in diameter. The wire fixing member 80 can detachably fix the wire 38 by the operation of reducing the diameter and expanding the diameter of the through hole of the wire gripping member 86. A collet can be applied as an example of the wire gripping member 86.

The holding member 88 is composed of a two-stage tubular member, and has a through hole penetrating between the base end side and the tip end side. The outer shape of the member 88A on the tip side of the holding member 88 is smaller than the outer shape of the member 88B on the base end side. The member 88B has a substantially cylindrical shape and extends inside the member 88A. The inner peripheral surface of the member 88B includes a screw portion (not shown). The screw portion (not shown) is formed in the shape of a female screw having a thread on the inner peripheral surface of the member 88B. The member 88A of the holding member 88 is housed in the holding member 84.

The holding member 88 has an engaging surface 88C. The engaging surface 88C is formed on the member 88B and engages with the claw portion 84B of the holding member 84. The engaging surface 88C is composed of an opening edge of a through hole formed in the member 88B. The through hole of the member 88B extends from the tip end side to the base end side.

The abutting member 90 is arranged in the opening on the base end side of the holding member 88. The abutting member 90 is formed of a thin plate having a thin thickness. However, the shape is not limited.

As shown in 11-2, the wire fixing member 80 is configured by integrally assembling the sliding member 82, the holding member 84, the wire gripping member 86, the holding member 88, and the abutting member 90. The screw portion 82D of the sliding member 82 and the screw portion of the holding member 88 are movably meshed with each other.

In the present specification, the cylindrical shape is not limited to a cylindrical shape as long as it has a through hole, and can be configured in either a single stage or a multi-stage shape.

Next, a procedure for fixing the wire 38 and the link member 120 with the wire fixing member 80 will be described with reference to FIGS. 12 to 16.

First, a cap 34 with a stand 36 to which the wire 38 is connected is prepared (see FIG. 2). The wire 38 connected to the upright stand 36 is inserted from the through hole 61 (see FIG. 2) of the tip main body 32 toward the base end side. The wire 38 is guided to the side of the base end of the hand operation unit 22 through the wire channel 40. A cap 34 with a stand 36 is attached to the tip body 32.

As shown in FIG. 12, the wire 38 passes through the openings of the operation unit main body 46 and the connecting member 124 of the link member 120, and protrudes toward the proximal end side. The wire fixing member 80 is prepared and the sliding member 82 is positioned toward the opening of the connecting member 124. The wire fixing member 80 and the connecting member 124 are moved in a direction in which they are relatively close to each other. The wire 38 is housed in the through hole of the sliding member 82. In FIG. 12, the base end side of the wire 38 is housed in the through hole of the sliding member 82.

FIG. 13 shows a state in which the wire fixing member 80 and the connecting member 124 are closer to each other as compared with FIG. As shown in 13-2, the wire fixing member 80 is substantially housed in the connecting member 124, leaving the holding member 88.

As shown in 13-1, the sliding member 82 of the wire fixing member 80 passes through the through hole 124B of the connecting member 124 and is guided to the sliding regulation pipe 108 of the operation unit main body 46. A part of the sliding member 82 is housed in the connecting member 124.

The protrusion 124A is continuously provided along the inner peripheral surface of the connecting member 124. The protrusion 124A projects inward in the radial direction of the through hole 124B of the connecting member 124. The holding member 84 is housed in the connecting member 124, and the snap 84A of the holding member 84 and the protrusion 124A come into contact with each other. The snap 84A is elastically deformed inward by the protrusion 124A with the fixed end as a fulcrum. A notch 84C for accommodating the protrusion 124A is formed on the side of the snap 84A near the fixed end.

The inner peripheral surface of the through hole 124B of the connecting member 124 has a shape that follows the snap 84A on the tip side of the protrusion 124A, and has a shape that tapers toward the tip side.

A tapered surface 82E is formed on the inner peripheral surface of the sliding member 82 on the base end side. The tapered surface 82E is arranged so as to face the wire gripping member 86 at a position separated from the tapered surface 86A.

A screw portion 88D that meshes with the screw portion 82D is provided on the inner peripheral surface of the through hole of the holding member 88.

FIG. 14 shows a state in which the wire fixing member 80 and the connecting member 124 are closer to each other as compared with FIG. As shown in 14-2, the wire fixing member 80 is housed deeper in the connecting member 124, leaving the holding member 88.

As shown in 14-1, the wire fixing member 80 is further moved to the tip side, and the protrusion 124A is located at the notch 84C on the fixed end side of the snap 84A. In this state, the elastic deformation of the snap 84A is released, and the snap 84A returns to the shape of the natural body. The snap 84A is housed following the inner peripheral surface of the through hole 124B.

The holding member 84 and the connecting member 124 are snap-fit-engaged by the snap 84A and the protrusion 124A. The wire fixing member 80 and the connecting member 124 are snapped into place, and the wire fixing member 80 and the connecting member 124 are fixed by snap-fit engagement.

FIG. 15 shows a state in which the wire fixing member 80 is rotated with respect to the connecting member 124. As shown in 15-1, the wire fixing member 80 is rotated about 1/4 clockwise with respect to the connecting member 124 as shown by an arrow when viewed from the base end side.

As shown in 15-2, the connecting member 124 regulates the wire fixing member 80 from moving toward the tip end side.

When the wire fixing member 80 is rotated, the holding member 84, the wire gripping member 86, the holding member 88, and the abutting member 90, excluding the sliding member 82, rotate. Since the screw portion 82D of the sliding member 82 and the screw portion 88D of the holding member 88 are movably meshed with each other, the sliding member 82 is moved to the base end side along the screw portion 88D of the holding member 88. Moving. On the other hand, the wire gripping member 86 is restricted from moving toward the proximal end by the abutting member 90. The sliding member 82 and the wire gripping member 86 can be moved so as to be relatively close to each other, and the tapered surface 86A of the wire gripping member 86 and the tapered surface 82E of the sliding member 82 come into contact with each other. The sliding member 82 tightens the wire gripping member 86. By this tightening, the gap of the slit 86B of the wire gripping member 86 is reduced, the through hole is reduced in diameter, and the wire gripping member 86 grips and fixes the wire 38.

By moving the sliding member 82 toward the base end, the snap restricting member 82C of the sliding member 82 is located at the free end of the snap 84A. Since the snap restricting member 82C fills the gap between the sliding member 82 and the snap 84A, the elastic deformation of the snap 84A is restricted. The regulation of elastic deformation of the snap 84A prevents the wire fixing member 80 from coming off the connecting member 124.

Next, FIG. 16 is a perspective view of the link member 120 and the wire fixing member 80 as viewed from the tip side. In 20-1, the wire fixing member 80 is omitted. As shown in 13-1, a through hole 124B is formed in the connecting member 124 of the link member 120. An engaged portion 124C is formed in the through hole 124B. The engaged portion 124C is a so-called key groove formed along the through hole 124B.

16-2 shows the state after rotating the wire fixing member 80 shown in FIG. As shown in 16-2, the sliding member 82 of the wire fixing member 80 is inserted into the through hole 124B of the connecting member 124. Therefore, the sliding member 82 can move in the wire axial direction.

The engaging portion 82B of the sliding member 82 engages with the engaged portion 124C of the connecting member 124. The engaging portion 82B and the engaged portion 124C are in a key-keyway relationship. Since it engages with the engaged portion 124C of the connecting member 124, the rotation of the sliding member 82 is restricted. The engaging portion 82B can be used as a key groove, and the engaged portion 124C can be used as a key.

Since the rotation of the sliding member 82 is restricted, when the holding

members

84 and 88 of the wire fixing member 80 are rotated, the sliding member 82 is based on the engagement between the screw portion 82D and the screw portion 88D. Can be moved to the edge side. As shown in FIGS. 12 to 16, the wire fixing member 80 of the embodiment is integrally configured, and the wire 38 and the link member 120 can be fixed by a simple operation.

(Second Embodiment)
Next, the endoscope of the second embodiment will be described with reference to FIGS. 17 to 21. The same configuration as in the first embodiment may be designated by the same reference numerals and detailed description thereof may be omitted.

Based on FIGS. 17 and 18, the operation of the standing operation lever 20 for moving the posture of the standing table 36 between the lying position and the standing position will be described. The second embodiment is different from the first embodiment and includes a root link member described later. 17 and 18 show an upright operating lever 20, a wire fixing member 80, and a link member 120 in the configuration of the endoscope 10, and an upright base 36, a wire 38, and a root link member 126.

Similar to the first embodiment, the standing operation lever 20 and the rotary ring 104 are connected, and the rotary ring 104 is rotated about the rotary shaft 102 by the operation of the standing operation lever 20 by the operator.

As shown in FIGS. 17 and 18, the link member 120 includes a rod 122 and a connecting member 124. The rod 122 is composed of a member having a longitudinal axis in the Y-axis direction. One end of the root link member 126 is connected to one end of the ring shape of the standing operation lever 20 via the connecting member 106. The root link member 126 extends to the side of the rod 122.

As shown in the enlarged view of FIG. 17, the root link member 126 has a substantially plate shape. Two notches 126A are formed on both sides of the root link member 126 on the side closer to the rod 122 than the center of the root link member 126. note that. In the enlarged view, the connecting member 106 is omitted. The rod 122 of the link member 120 includes two claw members 122A that can be attached to and detached from the notch 126A of the root link member 126 on the tip side. The two claw members 122A have an inverted U shape. The root link member 126 further extends toward the rod 122 and includes an engaging piece 126B that is inserted into an engaging hole (not shown) of the rod 122. The root link member 126 is formed with a through hole 126C. The root link member 126 is rotatably fixed by the through hole 126C and the pin 106A of the connecting member 106.

The rod 122 of the link member 120 is detachably connected to the other end of the root link member 126 by the claw member 122A and the notch 126A.

The rod 122 is connected to the standing operation lever 20 via the root link member 126 and the connecting member 106 on the tip side. The link member 120 is connected to the standing operation lever 20 via the root link member 126. Therefore, the link member 120, the root link member 126, the standing operation lever 20, and the rotary ring 104 are connected.

The wire 38 and the link member 120 are connected by the wire fixing member 80. The wire fixing member 80 includes an abutting member 90 that abuts against the base end surface of the wire 38.

The operation of moving the standing table 36 between the standing position and the lying position will be described with reference to FIGS. 17 and 18.

As shown in FIG. 17, the standing operation lever 20 is set to the lever lodging position L1 corresponding to the maximum tilting position of the standing table 36 on the base end side (Y (−) side) by the operation of the operator. To position. By operating the standing operation lever 20, the link member 120 is positioned at the link lodging position R1 on the tip side (Y (+) side) via the root link member 126 connected to the standing operation lever 20 and the rotary ring 104. do. The wire fixing member 80 housed in the connecting member 124 of the link member 120 is located on the tip end side (Y (+) side) and at the fixed lodging position F1 corresponding to the maximum lodging position E1 of the standing table 36. .. When the wire fixing member 80 is located at the fixed lodging position F1, the wire 38 fixed to the wire fixing member 80 is pushed to the tip side (Y (+) side) and is connected to the wire 38. The standing stand 36 is located at the maximum lodging position E1.

As shown in FIG. 18, by the operation of the operator, the standing operation lever 20 is located on the tip side (Y (+) side) and at the lever standing position L2 corresponding to the maximum standing position of the standing table 36. do. By operating the standing operation lever 20, the link member 120 is moved to the link standing position R2 on the base end side (Y (−) side) via the root link member 126 connected to the standing operation lever 20 and the rotary ring 104. To position. The wire fixing member 80 housed in the connecting member 124 of the link member 120 is located on the base end side (Y (−) side) and at the fixed standing position F2 corresponding to the maximum standing position E2 of the standing table 36. do. When the wire fixing member 80 is located at the fixed standing position F2, the wire 38 fixed to the wire fixing member 80 is pulled to the base end side (Y (−) side) and is connected to the wire 38. The raised stand 36 is located at the maximum standing position E2. The standing table 36 changes its posture in the operating region EA between the maximum lodging position E1 and the maximum standing position E2.

As shown in FIGS. 17 and 18, the standing operation lever 20 moves the link member 120 in the longitudinal axis direction of the wire 38 to move the wire fixing member 80 to the fixed lodging position corresponding to the maximum tilting position E1 of the standing table 36. An operation operating area LA for changing the posture of the standing table 36 by moving between the fixed operating area FA between F1 and the fixed standing position F2 corresponding to the maximum standing position E2 of the standing table 36 is provided. The operating operation area LA of the standing operation lever 20 is an area between the lever tilting position L1 and the lever standing position L2. Therefore, by operating the standing operation lever 20 of the operator, the link member 120 moves in the link operating region RA between the link tilting position R1 and the link standing position R2, and the wire fixing member 80 moves in the fixed lodging position F1. The fixing operation area FA between the fixed standing position F2 and the fixed standing position F2 is moved.

As shown in FIGS. 17 and 18, the link member 120 connected to the wire 38 by the wire fixing member 80 is attached to the other end of the root link member 126 when the wire fixing member 80 is present in the fixing operation region FA. It has a length that can be attached.

Next, a procedure in which the wire fixing member 80 fixes the wire 38 and fixes the wire 38 and the link member 120 will be described with reference to FIGS. 19 and 20.

As shown in FIG. 19, the state before the wire 38 is fixed by the wire fixing member 80 is shown. The standing operation lever 20 is located at the lever tilting position L1. The link member 120 is located in the link offset region RF. When the link member 120 is located in the link offset region RF, the link member 120 cannot be attached to the other end of the root link member 126. That is, in the second embodiment, the link member 120 is set to a length that cannot be attached to the other end of the root link member 126. The wire fixing member 80 is located in the fixing operation region FA. The wire 38 connected to the upright stand 36 projects from the base end side of the link member 120. The wire fixing member 80 accommodates the wire 38, and the base end surface of the wire 38 abuts against the abutting member 90.

As shown in FIG. 20, the wire fixing member 80 is moved beyond the fixing operation area FA to the fixing offset area FF. In the fixing offset region FF, the wire fixing member 80 is rotated about the Y-axis direction as described above, the wire fixing member 80 fixes the wire 38, and the link member 120 and the wire 38 are connected and fixed. do.

Since the link member 120 has not changed from the position shown in FIG. 19, when the wire fixing member 80 is located in the fixing offset region FF as shown in FIG. 20, the link member 120 is the other end of the root link member 126. Cannot be attached to.

Therefore, in order to connect the link member 120 and the root link member 126, the wire fixing member 80 is moved from the fixing offset region FF to the fixing operating region FA. When the wire fixing member 80 is located in the fixing operation region FA, the link member 120 and the root link member 126 can be connected as shown in FIGS. 17 and 18.

In the second embodiment, the link member 120 and the root link member 126 are mounted according to the position of the wire fixing member 80 depending on the length of the root link member 126 connected to the standing operation lever 20 and the length of the link member 120. It takes a state of being possible and not being able to be attached. With this configuration, the wire fixing member 80 can have a fixing operation area FA and a fixing offset area FF.

In the second embodiment, the wire fixing member 80 is positioned in the fixing offset region FF to fix the wire 38, so that the position of the standing operation lever 20 and the position of the standing base 36 can be made constant. The wire 38 is fixed by the wire fixing member 80 located in the fixing offset region FF, and then the wire fixing member 80 is moved to the fixing operation region FA. The standing operation lever 20 is moved to the lever lodging position L1, and in that state, the claw member 122A of the link member 120 and the notch 126A of the root link member 126 are connected, and the link member 120 and the root link member 126 are mounted. .. As a result, the wire fixing member 80 located in the fixing operation area FA is operated by the standing operation lever 20 located in the operation operation area LA.

Since the wire fixing member 80 has a fixing operation region FA and a fixing offset region FF, it is shown in FIG. 8 of the first embodiment when the flexible portion 26 (not shown) is in a looped state. Can play the same effect as.

In the second embodiment, in order to fix the wire 38 with the wire fixing member 80 located in the fixing offset region FF, it is preferable that the link member 120 is located in the link offset region RF.

Therefore, as shown in FIG. 21, the tape 130 fixes the link member 120 to the operation unit main body 46 until the cap 34 with the upright stand 36 to which the wire 38 is connected is attached to the tip main body 32, and until just before the so-called procedure. It is preferable to do so. The tape 130 can prevent the link member 120 from unintentionally moving from the link offset region RF to the link operating region RA. A rubber cap or the like can be applied instead of the tape 130. In this state, the link member 120 is not connected to the root link member 126. The tape 130 is removed just before the procedure. As shown in FIGS. 19 and 20, the wire 38 protruding from the link member 120 located in the link offset region RF is fixed by the wire fixing member 80.

In the second embodiment shown in FIGS. 17 to 20, the wire 38 can be fixed by the wire fixing member 80 shown in FIGS. 11 to 16 of the first embodiment and the link member 120 including the connecting member 124.

Next, a modified example of the second embodiment will be described with reference to FIGS. 22 to 24. A modified example of the second embodiment includes a wire 238, a wire fixing member 180, and a link member 220, which are different from the wire 38, the wire fixing member 80, and the link member 120 of the second embodiment shown in FIGS. 17 to 20. ..

Based on FIGS. 22 and 23, the operation of the standing operation lever 20 for moving the posture of the standing table 36 between the lying position and the standing position will be described. 22 and 23 show the standing operation lever 20 in the configuration of the endoscope 10, the wire fixing member 180 of the modified example, and the link member 220, and the standing base 36, the wire 238, and the root link member 126.

Similar to the second embodiment, the standing operation lever 20 and the rotary ring 104 are connected, and the rotary ring 104 is rotated about the rotary shaft 102 by the operation of the standing operation lever 20 by the operator.

As shown in FIGS. 22 and 23, the link member 220 includes a rod 222 and a connecting member 224. The connecting member 224 includes a sliding member 226 extending toward the tip end side. In the modified example, the connecting member 224 and the sliding member 226 are integrally molded. The sliding member 226 is slidably housed in the sliding control pipe 108.

One end of the root link member 126 is connected to one end of the ring shape of the standing operation lever 20 via the connecting member 106. The rod 222 of the link member 220 is detachably connected to the other end of the root link member 126 by the claw member 222A and the notch 126A.

The link member 220, the root link member 126, the standing operation lever 20 and the rotary ring 104 are connected.

The wire fixing member 180 connects and fixes the wire 238 and the link member 220. In a modified example, the wire 238 has a spherical target 238A at the end of the proximal end with a diameter larger than the diameter of the wire 238. The wire fixing member 180 has a groove 182B (see FIG. 26) as described later, and the groove 182B holds the wire 238 and the target 238A. The connecting member 224 is formed with a space S (see FIG. 25) in which the wire fixing member 180 can be accommodated from a direction orthogonal to the longitudinal axis direction of the wire 238.

The operation of moving the standing table 36 between the operating areas EA will be described with reference to FIGS. 22 and 23.

As shown in FIG. 22, the standing operation lever 20 is set to the lever tilting position L1 on the base end side (Y (−) side) corresponding to the maximum tilting position of the standing table 36 by the operation of the operator. When positioned, the wire fixing member 180 is located at the fixed lodging position F1, and the link member 220 is located at the link lodging position R1. The wire 238 fixed to the wire fixing member 180 is in a state of being pushed toward the tip end side (Y (+) side), and the upright stand 36 connected to the wire 238 is located at the maximum lodging position E1.

As shown in FIG. 23, by the operation of the operator, the standing operation lever 20 is located on the tip side (Y (+) side) and at the lever standing position L2 corresponding to the maximum standing position of the standing table 36. Then, the wire fixing member 180 is located at the fixed standing position F2, and the link member 220 is located at the link standing position R2. The wire 238 fixed to the wire fixing member 180 is in a state of being pulled toward the base end side (Y (−) side), and the upright stand 36 connected to the wire 238 is located at the maximum lodging position E1.

While the standing table 36 changes its posture between the operating regions EA, the sliding member 226 of the link member 220 is restricted in the moving direction in the longitudinal axis direction of the wire 238 by the sliding restricting pipe 108.

As shown in FIGS. 22 and 23, when the wire fixing member 180 is located in the fixing operating region FA and the link member 220 is located in the link operating region RA, the link member 220 is the other end of the root link member 126. Has a length that can be attached to.

As shown in FIG. 24, the wire fixing member 180 is located in the fixing offset region FF, and the link member 220 is located in the link offset region RF. At this position, when the wire fixing member 180 connects and fixes the wire 238 and the link member 220, the link member 220 has a length that cannot be attached to the other end of the root link member 126. Therefore, the wire fixing member 180 and the link member 220 are moved to the fixing operation area FA and the link operation area RA, which are the respective operation areas, and the link member 220 is connected to the other end of the root link member 126. The wire fixing member 180 located in the fixing operation area FA is operated by the standing operation lever 20 located in the operation operation area LA.

Since the wire fixing member 180 has a fixing operation region FA and a fixing offset region FF, it is shown in FIG. 8 of the first embodiment when the flexible portion 26 (not shown) is in a looped state. Can play the same effect as.

In the first embodiment and the second embodiment, the wire fixing member 80 located in the fixing offset region FF fixes the wire 38 and the link member 120. As a result, the position where the wire fixing member 80 fixes the wire 38 can be made constant, and as a result, the position of the standing operation lever 20 and the position of the standing base 36 can be made constant.

On the other hand, in the modified example of the second embodiment, the wire fixing member 180 fixes the wire 238 at a constant position regardless of whether the wire fixing member 180 is located in the fixing offset region FF or the fixing operating region FA. The wire fixing member 180 can connect and fix the connecting member 224 and the wire 238 at any position.

Next, the structures of the wire fixing member 180 and the link member 220 and the method of fixing the wire 238 will be described with reference to FIGS. 25 and 26.

FIG. 25 is a perspective view of the connecting member 224 and the sliding member 226. The rod 222 has been removed from the link member 220. The connecting member 224 includes a bottom portion 224A orthogonal to the longitudinal axis direction of the wire 238. The bottom portion 224A is a shape obtained by cutting the race track shape with a cutting line orthogonal to the straight line portion when viewed from the base end side.

The connecting member 224 includes a side wall 224B that is parallel to the longitudinal axis direction and extends toward the base end side from the other side except one side corresponding to the cutting line of the bottom portion 224A. The bottom portion 224A and the side wall 224B form a space S for accommodating the wire fixing member 180. Through holes 224C are formed in the two side walls 224B facing each other. Further, the side wall 224B has a short eaves 224E extending toward the space S on the side of the proximal end.

The sliding member 226 has a through hole having a length in the longitudinal axis direction through which the wire 238 is inserted, and the wire 238 is inserted through the through hole 226A.

A through hole 224D is formed in the bottom portion 224A of the connecting member 224 at a position where it is connected to the sliding member 226, and the wire 238 projects into the space S through the through hole 224D. The target 238A of the wire 238 is located in space S.

FIG. 26 is a perspective view immediately before mounting the wire fixing member 180 on the connecting member 224. The wire fixing member 180 includes a holding member 182 and a claw member 184 that sandwich the wire 238. The sandwiching member 182 has a substantially rectangular parallelepiped shape as a whole. The space accommodating portion 182A accommodated in the space S of the connecting member 224 of the sandwiching member 182 has a shape that resembles the side wall 224B of the connecting member 224. The space accommodating portion 182A has a tapered shape chamfered toward the space S. The space accommodating portion 182A is provided with a groove 182B for sandwiching the wire 238. The groove 182B has a tapered shape that narrows as it goes from the insertion port of the wire 238 to the depth of the space accommodating portion 182A. The portion of the groove 182B that sandwiches the wire 238 is set to a width that allows the wire 238 to pass through but not the target 238A. Therefore, the sandwiching member 182 prevents the wire 238 from coming off in the longitudinal axis direction of the wire 238 due to the groove 182B. A step 182C in which the eaves 224E of the connecting member 224 is accommodated is formed in the space accommodating portion 182A of the sandwiching member 182.

The claw member 184 is formed in an H shape by two straight members 184A arranged in parallel when viewed from the base end side and a connecting member 184B connecting the straight members 184A to each other. The connecting member 184B is fitted into the sandwiching member 182. In the two straight members 184A, protrusions 184C facing inward are provided on the side facing the connecting member 224. The two protrusions 184C fit into the through hole 224C of the connecting member 224. The wire fixing member 180 and the connecting member 224 are connected. In the two straight members 184A, the sides opposite to the protrusions 184C can be brought close to each other by applying a force F with a finger or the like in the direction indicated by the arrow. The two straight members 184A are deformed in the direction in which the two protrusions 184C are separated from each other with the connecting position with the connecting member 184B as a fulcrum. The wire fixing member 180 and the connecting member 224 can be easily connected.

According to the structures of the wire fixing member 180 and the connecting member 224 shown in FIGS. 25 and 26, the wire fixing member 180 and the connecting member 224 have their respective operating regions (fixing operating region FA and link operating region RA) and offsets. Regardless of whether it is located in any of the regions (fixing offset region FF and link offset region RF), the wire fixing member 180 can fix the wire 238 at a constant position, and the position of the standing operation lever 20 and the standing base 36 can be fixed. The position can be fixed.

When the wire fixing member 180 fixes the wire 238 in the fixing offset region FF, the wire fixing member 180 is moved to the fixing operating region FA, and the link member 220 and the root link member 126 are connected. On the other hand, when the wire fixing member 180 fixes the wire 238 in the fixing operation region FA, the link member 220 and the root link member 126 are connected in that state.

The example in which the endoscope according to the present invention is applied to a duodenal endoscope has been described above, but the technique of the present invention is not limited to the duodenal mirror and can be applied to other endoscopes such as a colonoscope or an enteroscopy. .. In addition, the present invention may be modified or modified without departing from the gist of the present invention.

10 Endoscope 12 Endoscope system 14 Endoscope processor device 15 Light source device 15A Processor side connector 16 Image processing device 18 Display 20 Standing operation lever 22 Hand operation part 24 Insertion part 26 Flexible part 28 Curved part 30 Tip part 32 Tip body 34 Cap 34A Opening window 34B Wall 34C Bearing 36 Treatment tool Standing table 36A Treatment tool guide surface 36B Rotating shaft 37 Treatment tool channel 38 Standing operation wire 40 Wire channel 42 Air supply water supply tube 44 Cable insertion channel 46 Operation unit body 47 Index 48 Grip 50 Grip prevention pipe 52 Universal cable 54 Connector device 57 Air supply water supply button 58 Air supply water supply nozzle 59 Suction button 60 Treatment tool outlet 61 Through hole 62 Angle knob 64 Treatment tool introduction port 68 Partition 68A Top surface 74 Lighting Window 76 Observation window 80 Wire fixing member 82 Sliding member 82A Groove 82B Engagement part 82C Snap regulation member 82D Screw part 82E Tapered surface 84 Holding member 84A Snap 84B Claw part 84C Notch 86 Wire gripping member 86A Tapered surface 86B Slit 88 Holding member 88A Member 88B Member 88C Engagement surface 88D Screw part 90 Butting member 92 Packing 102 Rotating shaft 104 Rotating ring 104A Rotating side protrusion 104B Seat surface 106 Connecting member 106 Pin 108 Sliding control pipe 120 Link member 122 Rod 122A Claw member 124 Connection Member 124A Protrusion 124B Through hole 124C Engagement part 126 Root link member 126A Notch 126B Engagement piece 126C Through hole 150 Rotating seat 150A Seat surface 152 Fixed side protrusion 180 Wire fixing member 182 Holding member 182A Space accommodating part 182B Groove 182C Step 184 Claw member 184A Straight member 184B Connecting member 184C Protrusion 220 Link member 222 Rod 222A Claw member 224 Connecting member 224A Bottom part 224B Side wall 224C Through hole 224D Through hole 224E Eaves 226 Sliding member 226A Sliding member 238 Wire 238A Target Ax Long axis direction E1 Maximum lodging position E2 Maximum standing position EA Operating area EN End F1 Fixed tilting position F2 Fixed standing position FA Fixed operating area FF Fixing offset area L1 Lever tilting position L2 Lever standing position LA Operating operating area LF Operating offset area R1 Link lodging position R2 Link standing position RA Link operating area RF Link offset area S Space ST Reference position

Claims

An operation unit provided with an operation member and
An insertion part provided on the tip side of the operation part and inserted into the subject,
A treatment tool standing stand provided at the tip of the insertion portion and
An upright operation wire whose tip side is connected to the treatment tool upright stand and inserted into the inside of the insertion portion,
The link member connected to the operating member and
An endoscope comprising a detachable wire fixing member that fixes the base end side of the standing operation wire and connects the link member and the standing operation wire.
The operating member moves the link member in the longitudinal axis direction of the standing operating wire, and moves the wire fixing member to a first position corresponding to the maximum tilting position of the treatment tool standing stand and a first position corresponding to the maximum standing position. The operation area for changing the posture of the treatment tool standing table by moving in the fixing operation area between the two positions, and the link member, and the link member and the standing operation wire by the wire fixing member. An endoscope comprising an operation offset area located on a side beyond the maximum lodging position of the operation operation area, which is moved to a link offset area to be connected.
The endoscope according to claim 1, wherein the operation unit is provided with an index for identifying whether the operation member is an operation operation area or an operation offset area.
A rotating side protrusion that moves in synchronization with the rotation of the operating member and a fixed side protrusion that is fixed to the operating member are arranged in the operating unit, and the operating member is operated to operate the operating member. The endoscope according to claim 1, wherein when the operating region and the operation offset region are switched, the rotating side projection and the fixed side projection come into contact with each other and overcome the operating region to generate a click feeling.
The endoscope according to claim 3, wherein at least one of the rotating side protrusion or the fixed side protrusion is made of an elastic member.
An operation unit provided with an operation member and
An insertion part provided on the tip side of the operation part and inserted into the subject,
A treatment tool standing stand provided at the tip of the insertion portion and
An upright operation wire whose tip side is connected to the treatment tool upright stand and inserted into the inside of the insertion portion,
A root link member having one end connected to the operating member, and a link member that can move in the longitudinal axis direction of the standing operation wire via the root link member according to the operation of the operating member.
An endoscope comprising a detachable wire fixing member that fixes the base end side of the standing operation wire and connects the link member and the standing operation wire.
The link member can be attached to and detached from the other end of the root link member.
The wire fixing member is formed from a fixing operating region that can be moved between a first position corresponding to the maximum tilting position of the treatment tool standing position and a second position corresponding to the maximum standing position, and the fixing operating region. Also has a fixing offset area located on the side beyond the maximum lodging position,
The link member connected to the standing operation wire by the wire fixing member can be attached to the other end of the root link member when the wire fixing member is present in the fixing operation region, and the link member can be attached to the other end. An endoscope having a length that cannot be attached to the other end of the root link member when the wire fixing member is present in the fixing offset region.
The endoscope according to any one of claims 1 to 5, wherein the wire fixing member has an abutting surface that abuts against a base end surface of the standing operation wire.
The endoscope according to any one of claims 1 to 6, wherein the link member is arranged outside the operation unit.