WO2021193692A1

WO2021193692A1 - Endoscope

Info

Publication number: WO2021193692A1
Application number: PCT/JP2021/012149
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

Abstract

Provided is an endoscope in which a wire affixing member can reliably affix a wire. This endoscope comprises: a manual operation part that is provided with an operation member; a raising platform that is provided to the tip-end part of an insertion part; a wire that operates the raising platform; a wire affixing member that affixes the wire; and a linking member equipped with a connection member that makes it possible to connect to the wire affixing member, and a rod that is connected to the operation member. The wire affixing member comprises an engaging part which extends to the tip-end side along the lengthwise axial direction of the wire, and which has a protrusion at the tip end. The manual operation part has a groove comprising: a first movement permitting region that allows the passage of the engagement part in the lengthwise axis direction of the wire when attaching or detaching the wire affixing member; a movement restricting region that allow the passage of the engagement part in the rotation direction and restricts the movement of the engagement part in the lengthwise axis direction of the wire; and a second movement permitting region that allows the passage of the engagement part in the lengthwise axis direction of the wire while the raising platform moves between a lowered position and a raised position.

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 chuck, and a tip of the endoscope. A rod whose side is connected to an operating member and whose base end side is connected to a collet chuck is provided.

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

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

However, in Cited Document 1 and Patent Document 2, the collet chuck gradually grips and fixes the wire by tightening the nut. Therefore, if the procedure is performed with insufficient gripping force on the wire, there is a concern that the standing operation of the treatment tool or the locking operation of the guide wire may be affected.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an endoscope in which a wire fixing member can reliably fix an upright operation wire.

The endoscope of the first aspect is provided at the hand operation portion provided with the operation member, the insertion portion provided on the tip side of the hand operation portion and inserted into the subject, and the tip portion of the insertion portion. The treatment tool standing table, the standing operation wire whose tip side is connected to the treatment tool standing table and pushed and pulled according to the operation of the operating member to operate the treatment tool standing table, and the wire channel through which the standing operation wire is inserted. , A wire fixing member that fixes the base end side of the standing operation wire, and a through hole having a length in the longitudinal axis direction through which the standing operation wire is inserted is formed, and a slit along the through hole is formed on the outer peripheral surface. A wire gripping member to be held, a sliding member for accommodating the wire gripping member, a holding member for holding the sliding member, and a holding member formed on the holding member and extending toward the tip along the longitudinal axis direction of the standing operation wire to reach the tip. A wire fixing member integrally including an engaging portion having a protrusion, a sliding control pipe arranged on the side of the base end of the hand operation portion and slidably accommodating the sliding member of the wire fixing member, A link member that accommodates a wire fixing member and is provided with a connecting member that enables connection with the wire fixing member and a rod that is connected to the operating member, and is arranged outside the hand operating portion. An endoscope including a link member capable of sliding the wire fixing member in the longitudinal axis direction of the operating wire in conjunction with the wire fixing member. The wire fixing member grips the sliding member and the wire by the rotational operation of the holding member. By moving the member so as to be relatively close to each other, the wire gripping member is tightened to reduce the gap between the slits, the through hole is reduced in diameter, the standing operation wire is fixed, and the hand operation portion is on the side of the base end. Has at least one groove that engages with the protrusion of the engaging portion, the groove being the first movable region through which the engaging portion passes in the longitudinal axis direction of the upright operating wire when attaching and detaching the wire fixing member. And, when the wire fixing member is rotated, the engaging portion is passed in the rotational direction, and the engaging portion is raised. A second movable region through which the engaging portion passes in the longitudinal axis direction of the standing operation wire while the treatment tool standing base moves between the lodging position and the standing position when the wire is positioned at the fixed position. To be equipped with. According to the first aspect, the wire fixing member can reliably fix the standing operation wire.

In the endoscope of the second aspect, at least one groove includes a plurality of grooves formed on both sides of the outer peripheral surface of the hand operation portion. According to the second aspect, even when the wire fixing member is inverted, the wire fixing member can surely fix the standing operation wire.

The endoscope of the third aspect is provided at the hand operation portion provided with the operation member, the insertion portion provided on the tip side of the hand operation portion and inserted into the subject, and the tip portion of the insertion portion. The treatment tool standing table, the standing operation wire whose tip side is connected to the treatment tool standing table and pushed and pulled according to the operation of the operating member to operate the treatment tool standing table, and the wire channel through which the standing operation wire is inserted. , A wire fixing member that fixes the base end side of the standing operation wire, and a through hole having a length in the longitudinal axis direction through which the standing operation wire is inserted is formed, and a slit along the through hole is formed on the outer peripheral surface. A wire gripping member, a sliding member accommodating the wire gripping member, at least one first groove that holds the sliding member and extends along the longitudinal axis direction of the standing operation wire, and at least one second groove. A wire fixing member integrally including a holding member having a It is a link member that accommodates the member and is provided with a connecting member that enables connection with the wire fixing member and a rod that is connected to the operating member, and is arranged outside the hand operation unit, and is interlocked with the operating member. The wire fixing member is an endoscope including a link member capable of sliding the wire fixing member in the longitudinal axis direction of the operating wire. By moving the wire so as to be relatively close to each other, the wire gripping member is tightened to reduce the gap between the slits, the through hole is reduced in diameter, the standing operation wire is fixed, and the hand operation portion is the wire toward the base end side. It has an engaging portion that extends to the side of the fixing member and has a protrusion at the tip, and the first groove allows the engaging portion to pass in the longitudinal axis direction of the standing operation wire when attaching and detaching the wire fixing member, and the engaging portion. Restricts the wire fixing member from moving in the longitudinal axis direction of the standing operation wire during the rotational operation of the wire fixing member, and the second groove is when the wire fixing member is positioned at the fixed position of the standing operation wire. The engaging portion is passed in the longitudinal axis direction of the erecting operation wire while the erecting tool moves between the laid position and the erecting position. According to the third aspect, the wire fixing member can reliably fix the standing operation wire as in the first aspect.

In the endoscope of the fourth aspect, at least one first groove includes a plurality of first grooves, and at least one second groove includes a plurality of second grooves as many as the number of the plurality of first grooves. According to the fourth aspect, even when the wire fixing member is inverted, the wire fixing member can surely fix the standing operation wire.

In the endoscope of the fifth aspect, the holding member has a snap that elastically deforms, the connecting member has a protrusion, and the holding member and the connecting member snap-fit and engage with each other by the snap and the protrusion. According to the fifth aspect, the wire fixing member and the connecting member can be easily fixed.

In the endoscope of the sixth aspect, the sliding member has a snap regulating member that regulates elastic deformation of the snap. According to the sixth aspect, the wire fixing member is prevented from being unintentionally separated from the connecting member.

In the endoscope of the seventh aspect, the sliding member of the wire fixing member has a sliding side engaging portion on the outer peripheral surface, a through hole is formed in the connecting member, and the through hole is in the wire axial direction of the sliding member. Has a connecting side engaged portion that engages with the sliding side engaging portion, and regulates the rotation of the sliding member. According to the seventh aspect, the wire gripping member can be tightened by the sliding member.

According to the endoscope of the present invention, the wire fixing member can securely fix the standing operation wire.

FIG. 1 is a block diagram of an endoscope system including an endoscope. FIG. 2 is an enlarged perspective view of the tip portion. FIG. 3 is a perspective view of the tip main body shown in FIG. FIG. 4 is a perspective view of the cap shown in FIG. FIG. 5 is an assembly drawing of the wire fixing member. FIG. 6 is a diagram showing a procedure for attaching the wire fixing member of the first embodiment to the link member. FIG. 7 is a diagram showing a procedure for attaching the wire fixing member of the first embodiment to the link member. FIG. 8 is a diagram showing a procedure for attaching the wire fixing member of the first embodiment to the link member. FIG. 9 is a diagram showing a procedure for fixing the standing operation wire and the link member by the wire fixing member. FIG. 10 is a diagram showing a procedure for fixing the standing operation wire and the link member by the wire fixing member. FIG. 11 is a diagram showing a procedure for fixing the standing operation wire and the link member by 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 first modification of the first embodiment. FIG. 14 is a diagram showing a second modification of the first embodiment. FIG. 15 is a diagram showing a procedure for attaching the wire fixing member of the second embodiment to the link member. FIG. 16 is a diagram showing a procedure for attaching the wire fixing member of the second embodiment to the link member. FIG. 17 is a diagram showing a procedure for attaching the wire fixing member of the second embodiment to the link member. FIG. 18 is a diagram showing a 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. ..

FIG. 3 is a perspective view of the tip portion main body 32 constituting the tip portion 30. FIG. 4 is a perspective view of the cap 34 constituting the tip portion 30. As shown in FIGS. 2 to 4, the tip portion 30 is configured by attaching a cap 34 to the tip portion main body 32. As will be described later, the cap 34 is provided with a treatment tool standing table 36 (hereinafter, standing table 36) having a treatment tool guiding surface 36A, and in FIGS. 2 and 4, the standing table 36 is located at an inverted position. The state of being shown is shown.

In addition to the tip portion 30, various contents arranged inside the insertion portion 24 of the endoscope 10 (see FIG. 1) are shown in FIGS. 2 and 3. 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. A link member 120 is arranged outside the operation unit main body 46. 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). 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 (see FIGS. 2 and 3) 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 at the top is inserted into the treatment tool channel 37 (see FIGS. 2 and 3) and is led out from the treatment tool outlet 60 to the outside. NS. 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 as shown in FIG. By attaching the cap 34 of FIG. 4 to the tip main body 32, the upright stand accommodating space 66 of FIG. 2 is defined by the partition wall 68 of the tip main body 32 and the wall portion 34B of the cap 34. The standing table accommodating space 66 is arranged at a position on the X (+) direction side of the partition wall 68 and at a position on the Y (+) direction side of the treatment tool outlet 60. As shown in FIG. 3, 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.

Next, the cap 34 shown in FIG. 4 will be described.

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.

When the cap 34 is attached to the tip body 32, as shown in FIG. 2, the standing table accommodating space 66 is defined in the tip body 32, and the opening window 34A is opened in the Z (+) direction. NS. As a result, the treatment tool outlet 60 of the tip main body 32 is communicated with the opening window 34A via the upright stand accommodating space 66.

As shown in FIG. 4, the cap 34 is provided with a bearing 34C that rotatably supports the upright stand 36 inside the cap 34. The bearing 34C is configured as a plate-like body having a height in the Z (+) direction and 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.

Next, the structure of the wire fixing member 80 will be described based on the assembly drawing of FIG. In FIG. 5, 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 5-1 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. .. A movement restricting member 90 for restricting the movement of the wire gripping member 86 is provided on the side of the base end of the holding member 88. Although the holding member 88 and the movement restricting member 90 are shown as separate members in FIG. 5, 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.

The sliding member 82 has two sliding side engaging portions 82B formed on the outer peripheral surface on the base end side of the groove 82A. The sliding side 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 along the outer peripheral surface from the sliding side engaging portion 82B to the base end side. 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.

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 88D (see FIG. 9). 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 holding member 88 includes an engaging portion 88E extending toward the tip end side along the longitudinal axis direction of the wire 38 (not shown). The engaging portion 88E is integrally formed with the holding member 88 on the outer peripheral surface of the holding member 88. The engaging portion 88E is provided with a protrusion 88F on the side of the tip end thereof. The protrusion 88F extends inward, and the engaging portion 88E has an L-shape as a whole.

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

As shown in 5-2, 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 movement restricting member 90. 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.

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. As will be described later, in the wire fixing member 80 of the embodiment, the wire gripping member 86 housed in the wire fixing member 80 is tightened, the gap of the slit 86B is reduced, and the through hole is reduced in diameter by rotating the wire fixing member 80. Grasps and secures the wire 38.

Next, with reference to FIGS. 6 to 8, a procedure for attaching the wire fixing member 80 to the connecting member 124 of the link member 120 will be described. In FIGS. 6 to 8, the angle knobs 62 and 62 are removed from the operation unit main body 46 shown in FIG. By executing the mounting procedure, the wire fixing member 80 is fixed to the link member 120 via the connecting member 124 when fixing the wire 38. Therefore, the wire 38 and the link member 120 are fixed by the wire fixing member 80.

First, a cap 34 with a stand 36 to which the wire 38 is connected is prepared (see FIG. 4). The wire 38 connected to the upright stand 36 is inserted from the through hole 61 (see FIG. 3) 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. 6, 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. 6, a part of the wire 38 on the base end side is housed in the through hole of the sliding member 82.

As shown in FIG. 6, at least one groove 47 is formed on the base end side of the operation unit main body 46 of the hand operation unit 22. The groove 47 is formed on the outer peripheral surface of one side of the operation unit main body 46. The groove 47 engages with the protrusion 88F of the wire fixing member 80. Since the protrusion 88F engages with the groove 47, the movement of the protrusion 88F is restricted by the groove 47.

As shown in FIG. 6, the groove 47 includes a first movable area 47A, a movement restricting area 47B, and a second movable area 47C. The first movable region 47A extends in the longitudinal axis direction of the wire 38, and when the wire fixing member 80 is attached and detached, the protrusion 88F of the engaging portion 88E is passed in the longitudinal axis direction of the wire 38.

The movement restriction region 47B is continuous with the end side of the first movable region 47A on one end side thereof, and extends in a direction orthogonal to the longitudinal axis direction of the wire 38. The movement restriction region 47B allows the protrusion 88F of the engaging portion 88E to pass in the rotational direction during the rotational operation of the wire fixing member 80, and restricts the movement of the protrusion 88F of the engaging portion 88E in the longitudinal axis direction of the wire 38. do.

The second movable area 47C is continuous with the other end side of the movement restriction area 47B. The second movable region 47C extends from the other end of the movement restricting region 47B from the tip end side to the proximal end side in the longitudinal axis direction of the wire 38. The second movable region 47C is formed at a position corresponding to the position where the wire fixing member 80 fixes the wire 38 with a sufficient gripping force.

As shown in FIG. 6, the protrusion 88F of the engaging portion 88E and the first movable region 47A are positioned at positions that substantially coincide with each other in the longitudinal axis direction of the wire 38.

In FIG. 6, the standing operation lever 20 is located at the position where the standing table 36 (see FIG. 2) is positioned in the lodging position. The hand operation unit 22 includes a rotating shaft 102 and a rotating ring 104 that is 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 FIG. 6, 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 one end of the ring shape of the standing operation lever 20 via the connecting member 106 on the base end 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 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.

As shown in FIG. 7, the wire fixing member 80 and the connecting member 124 are moved in a relatively close direction, and the wire fixing member 80 is attached to the connecting member 124. When mounted, the first movable region 47A passes the protrusion 88F of the engaging portion 88E toward the tip end side of the wire 38 in the longitudinal axis direction. The protrusion 88F of the engaging portion 88E reaches the tip end side of the first movable region 47A. The movement of the wire fixing member 80 is restricted by the protrusion 88F of the engaging portion 88E and the first movable region 47A.

As shown in FIG. 8, as compared with FIG. 7, 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. .. The protrusion 88F of the engaging portion 88E moves along the movement restriction region 47B and reaches the second movable region.

When the protrusion 88F is located in the movement restriction region 47B, there is a concern that the wire gripping member 86 of the wire fixing member 80 does not fix the wire 38 with sufficient gripping force.

In the embodiment, when the protrusion 88F of the engaging portion 88E is located in the movement restriction region 47B, the movement of the engaging portion 88E is restricted, and the movement of the holding member 88 connected to the engaging portion 88E is also restricted. The fixing member 80 is restricted from moving in the longitudinal axis direction of the wire 38.

Therefore, even if the link member 120 is moved to the base end side (Y (−) direction) by the standing operation lever 20, the wire fixing member 80 is restricted from moving in the longitudinal axis direction of the wire 38. , The movement of the standing table 36 (see FIG. 2) to the standing position is restricted. According to the embodiment, it is possible to prevent the operator from shifting to the procedure when the gripping force on the wire 38 is not sufficient.

When the protrusion 88F reaches the second movable region 47C, the wire gripping member 86 of the wire fixing member 80 can fix the wire 38 with sufficient gripping force. When the link member 120 is moved to the base end side (Y (−) direction) by the standing operation lever 20, the second movable region 47C passes the protrusion 88F in the longitudinal axis direction of the wire 38, so that the wire fixing member 80 can move in the longitudinal axis direction (Y (−) direction) of the wire 38. The standing table 36 (see FIG. 2) can be moved to the standing position.

Further, when the link member 120 is moved from the standing position of the standing table 36 to the base end side (Y (+) direction) by the standing operation lever 20, the second movable region 47C makes the protrusion 88F the length of the wire 38. Since the wire is passed in the axial direction, the wire fixing member 80 can move in the longitudinal axis direction of the wire 38. The stand 36 (see FIG. 2) can be moved to the lodging position. In the second movable region 47C, when the wire fixing member 80 is positioned at the fixed position of the wire 38, the protrusion 88F of the engaging portion 88E is provided while the standing table 36 moves between the inverted position and the standing position. The wire 38 can be passed in the longitudinal axis direction.

According to the embodiment, the operator can shift to the procedure and operate the standing table 36 with sufficient gripping force on the wire 38.

The wire fixing member 80 can be removed from the connecting member 124 by a procedure opposite to the procedure of FIGS. 6 to 8 described above.

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. 9 to 11. 9 and 10 are cross-sectional views taken in the state of FIG. 7, and FIG. 11 is a cross-sectional view taken in the state of FIG. The engaging portion 88E is omitted.

FIG. 9 shows a state in which the wire fixing member 80 and the connecting member 124 are close to each other. The wire fixing member 80 is substantially housed in the connecting member 124, leaving the holding member 88.

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 sliding control pipe 108 is arranged substantially parallel to the Y-axis direction on the side of the base end of the hand operating portion 22. The sliding control pipe 108 is fixedly arranged inside the operation unit main body 46 of the hand operation unit 22. The sliding control pipe 108 is made of a tubular member and has a through hole penetrating between the base end side and the tip end side. The sliding control pipe 108 slidably accommodates the sliding member 82 of the wire fixing member 80. The sliding member 82 can move along the sliding regulation pipe 108. The sliding regulation pipe 108 regulates the sliding direction of the sliding member 82 of the wire fixing member 80.

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. 10 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 FIG. 10, the wire fixing member 80 is housed in the connecting member 124 deeper than in FIG. 9, leaving the holding member 88.

As shown in FIG. 10, 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. 11 shows a state in which the wire fixing member 80 is rotated with respect to the connecting member 124. 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 movement restricting 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 movement restricting 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 between the slits 86B of the wire gripping member 86 is reduced and the through hole is reduced in diameter, so that 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. 12 is a perspective view of the link member 120 and the wire fixing member 80 as viewed from the tip side. In 12-1, the wire fixing member 80 is omitted. As shown in 12-1, a through hole 124B is formed in the connecting member 124 of the link member 120. A connecting side engaged portion 124C is formed in the through hole 124B. The connecting side engaged portion 124C is a so-called key groove formed along the through hole 124B.

12-2 shows the state after rotating the wire fixing member 80 shown in FIG. As shown in 12-2, 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 sliding side engaging portion 82B of the sliding member 82 engages with the connecting side engaged portion 124C of the connecting member 124. The sliding side engaging portion 82B and the connecting side engaged portion 124C are in a key-keyway relationship. Since it engages with the connecting side engaged portion 124C of the connecting member 124, the rotation of the sliding member 82 is restricted. The sliding side engaging portion 82B can be used as a key groove, and the connecting side 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. 9 to 12, 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.

Next, a modified example of the first embodiment will be described with reference to FIGS. 13 and 14 regarding the configuration of the engaging portion of the wire fixing member and the groove formed in the main body of the operating portion. In FIGS. 13 and 14, the link member 120 is omitted for ease of understanding. The same configuration as in the first embodiment may be designated by the same reference numerals and the description thereof may be omitted.

As shown in FIG. 13, in the first modification of the first embodiment, the wire fixing member 180 includes a holding member 88. The holding member 88 includes two engaging portions 88E extending toward the tip end side along the longitudinal axis direction of the wire 38 (not shown). The tip of each engaging portion 88E is provided with a protrusion 88F facing inward.

In the first modification, two grooves 47 are formed in the operation unit main body 146. Each groove 47 has a first movable region 47A, a movement restricting region 47B, and a second movable region 47C.

When the wire fixing member 180 is attached, the protrusions 88F of the two engaging portions 88E of the holding member 88 pass through the two first movable regions 47A, respectively. When the wire fixing member 180 is rotated in the direction of fixing the wire 38, the two protrusions 88F pass through the movement restricting region 47B and reach the second movable region 47C. The wire fixing member 180 can fix the wire 38 with a sufficient gripping force. Since the protrusion 88F passes through the second movable region 47C, the wire fixing member 180 can move in the longitudinal axis direction of the wire 38, and the upright stand 36 can move between the inverted position and the upright position.

When the wire fixing member 180 is rotated in the direction of releasing the wire 38, the protrusion 88F reaches the first movable region 47A, and the wire fixing member 180 can be removed.

As shown in FIG. 14, in the second modification of the first embodiment, the wire fixing member 280 includes the holding member 88 as in the first modification. The holding member 88 includes two engaging portions 88E extending toward the tip end side along the longitudinal axis direction of the wire 38 (not shown). The tip of each engaging portion 88E is provided with a protrusion 88F facing inward.

In the second modification, the groove 47 is formed in the operation unit main body 246. The groove 47 has two linear regions extending in the longitudinal axis direction of the wire 38, and an annular region that connects the tip ends of the two regions and goes around the outer peripheral surface of the operation unit main body 246.

When the wire fixing member 280 is attached, the protrusions 88F of the two engaging portions 88E of the holding member 88 pass through the two linear regions of the groove 47, respectively. The two linear regions function as the first movable region 47A. When the wire fixing member 280 is rotated half a turn in the direction of fixing the wire 38, the two protrusions 88F pass through the annular region. The annular region functions as the movement restriction region 47B. The protrusion 88F reaches the linear region on the side opposite to the linear region (first movable region 47A) when mounted. The wire fixing member 280 can fix the wire 38 with sufficient gripping force. Since the protrusion 88F passes through the linear region on the opposite side, the wire fixing member 180 can move in the longitudinal axis direction of the wire 38, and the upright stand 36 can move between the inverted position and the upright position. The linear region on the opposite side functions as the second movable region 47C.

When the wire fixing member 280 is rotated counterclockwise in the direction of releasing the wire 38, the protrusion 88F reaches the first movable region 47A opposite to the second movable region 47C, and the wire fixing member 280 can be removed.

In the

wire fixing members

180 and 280, the sliding side engaging portion 82B of the sliding member 82 needs to be engaged with the connecting side engaged portion 124C of the connecting member 124. In FIGS. 13 and 14, the operation unit main body 146 and 246 are different from the first embodiment in that grooves 47 are formed on the outer peripheral surfaces on both sides. According to this configuration, the

wire fixing member

180 and 280 can be attached to the connecting member 124 even if the

wire fixing member

180 and 280 are inverted by 180 °.

(Second Embodiment)
Next, the endoscope of the second embodiment will be described with reference to FIGS. 15 to 18. The same configuration as in the first embodiment may be designated by the same reference numerals and detailed description thereof may be omitted.

As shown in FIG. 15, the wire fixing member 380 of the second embodiment includes holding

members

388 and 84, a movement restricting member 90, a sliding member 82, and a packing 92. The wire fixing member 380 includes a wire gripping member 86 (not shown) inside, and the wire gripping member 86 is housed in the sliding member 82. The wire fixing member 380 integrally includes holding

members

388 and 84, a movement restricting member 90, a sliding member 82, a packing 92, and a wire gripping member 86.

The holding member 388 has a two-stage tubular shape, and the tip side (lower) member 388A has a larger diameter than the base end side (upper) member 388B. At least one first groove 388C and at least one second groove 388D extending along the long axis direction of the wire 38 are formed on the peripheral edge of the member 388A.

The operation unit main body 346 of the hand operation unit 22 of the second embodiment includes an engagement portion 346A extending toward the wire fixing member 380 on the base end side and having a protrusion 346B at the tip end. The protrusion 346B projects toward the connecting member 124.

The sliding member 82 of the wire fixing member 380 is directed to the opening of the connecting member 124. The first groove 388C and the engaging portion 346A are positioned at positions that substantially coincide with each other in the longitudinal axis direction of the wire 38. In order to mount the wire fixing member 380, the wire fixing member 380 and the connecting member 124 are moved in a relatively close direction.

As shown in FIG. 16, the first groove 388C allows the protrusion 346B of the engaging portion 346A to pass in the longitudinal axis direction of the wire 38 when the wire fixing member 380 is attached and detached. Since the portion of the engaging portion 346A other than the protrusion 346B is arranged at a certain distance from the member 388A, it does not come into contact with the member 388A. The direction of movement of the wire fixing member 380 is determined by the first groove 388C and the protrusion 346B of the engaging portion 346A.

As shown in FIG. 17, the wire fixing member 380 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. The second groove 388D reaches the position of the protrusion 346B of the engaging portion 346A without contacting the protrusion 346B.

When the second groove 388D does not reach the protrusion 346B, there is a concern that the wire gripping member 86 of the wire fixing member 380 does not fix the wire 38 with sufficient gripping force.

In the embodiment, when the second groove 388D does not reach the protrusion 346B, when the wire fixing member 380 is moved in the longitudinal axis direction of the wire 38, the protrusion 346B and the member 388A come into contact with each other, so that the wire fixing member 380 is moved. Is regulated.

Therefore, even if the link member 120 is moved to the base end side (Y (−) direction) by the standing operation lever 20 (see FIG. 1), the wire fixing member 380 moves the wire 38 in the longitudinal axis direction. Since it is regulated, the movement of the standing table 36 (see FIG. 2) to the standing position is restricted. According to the embodiment, it is possible to prevent the operator from shifting to the procedure when the gripping force on the wire 38 is not sufficient.

When the second groove 388D reaches the protrusion 346B, the wire gripping member 86 of the wire fixing member 380 can fix the wire 38 with a sufficient gripping force. When the wire fixing member 380 is positioned at the fixed position of the wire 38, the second groove 388D causes the protrusion 346B of the engaging portion 346A to move the protrusion 346B of the engaging portion 346A while the standing table 36 moves between the inverted position and the standing position. Pass in the longitudinal axis direction of. When the link member 120 is moved to the base end side (Y (−) direction) by the standing operation lever 20, the second groove 388D passes the protrusion 346B in the longitudinal axis direction of the wire 38, so that the wire fixing member 380 Can move in the longitudinal axis direction (Y (−) direction) of the wire 38. The standing table 36 (see FIG. 2) can be moved to the standing position.

Further, when the link member 120 is moved from the standing position of the standing table 36 to the base end side (Y (+) direction) by the standing operation lever 20, the second groove 388D causes the protrusion 346B to move the protrusion 346B in the longitudinal axis direction of the wire 38. The wire fixing member 380 can move in the longitudinal axis direction of the wire 38. The stand 36 (see FIG. 2) can be moved to the lodging position. In the second groove 388D, when the wire fixing member 380 is positioned at the fixed position of the wire 38, the protrusion 346B of the engaging portion 346A is moved through the protrusion 346B of the wire 38 while the standing table 36 moves between the inverted position and the standing position. Can be passed in the longitudinal axis direction of.

The wire fixing member 380 can be removed from the connecting member 124 by a procedure opposite to the procedure of FIGS. 15 to 17 described above.

Next, a modified example of the second embodiment will be described with reference to FIG. 18 regarding the configuration of the first groove and the second groove of the wire fixing member and the engaging portion formed in the operation portion main body. In FIG. 18, the link member 120 is omitted for ease of understanding. The same configuration as in the second embodiment may be designated by the same reference numerals and the description thereof may be omitted.

As shown in FIG. 18, in the modified example, the wire fixing member 480 includes holding

members

488 and 84, movement restricting member 90, sliding member 82, and packing 92. The wire fixing member 480 includes a wire gripping member 86 (not shown) inside, and the wire gripping member 86 is housed in the sliding member 82. The wire fixing member 480 integrally includes holding

members

488 and 84, a movement restricting member 90, a sliding member 82, a packing 92, and a wire gripping member 86. In FIG. 18, member 488B is shown by a virtual line.

As shown in FIG. 18, the member 488A of the holding member 488 has four grooves extending in the longitudinal axis direction of the wire 38 formed at equal intervals on the peripheral edge thereof. The four grooves are composed of two first grooves 488C and two second grooves 488D. The two first grooves 488C are located point-symmetrically with respect to the center of the member 488A. The two second grooves 488D are located point-symmetrically with respect to the center of the member 488A. The plurality of second grooves 488D is the same as the number of the plurality of first grooves 488C.

The operation unit main body 446 is provided with an engaging portion 346A, and the engaging portion 346A is provided with a protrusion 346B on the tip side.

Similar to the second embodiment, in the modified example, when the wire fixing member 480 is attached and detached, the first groove 488C passes the protrusion 346B of the engaging portion 346A in the longitudinal axis direction of the wire 38. The portion of the engaging portion 346A other than the protrusion 346B is arranged so as to be opposed to the member 488A by a certain distance, so that the portion does not come into contact with the member 488A. The direction of movement of the wire fixing member 480 is determined by the first groove 488C and the protrusion 346B of the engaging portion 346A.

Similar to the second embodiment, the wire fixing member 480 is rotated about 1/4 clockwise as shown by the arrow. The second groove 488D reaches the position of the protrusion 346B of the engaging portion 346A without contacting the protrusion 346B.

When the wire fixing member 480 is positioned at the fixed position of the wire 38, the second groove 488D causes the protrusion 346B of the engaging portion 346A to move the protrusion 346B of the engaging portion 346A while the standing table 36 moves between the inverted position and the standing position. Pass in the longitudinal axis direction of.

In the wire fixing member 480, the sliding side engaging portion 82B of the sliding member 82 needs to be engaged with the connecting side engaged portion 124C (not shown) of the connecting member 124. The member 488A of the holding member 488 of the modified example 1 shown in FIG. 18 includes two first grooves 488C and two second grooves 488D. According to this configuration, the wire fixing member 480 can be inserted into the connecting member 124 even if the wire fixing member 480 is inverted by 180 °.

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 Stand 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 Groove 47A 1st movable area 47B Movement regulation area 47C 2nd movable area 48 Grip part 50 Breaking 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 66 Standing stand accommodation space 68 Partition 68A Top surface 74 Illumination window 76 Observation window 80 Wire fixing member 82 Sliding member 82A Groove 82B Sliding side engaging part 82C Snap regulating 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 Engaging surface 88D Screw part 88E Engaging part 88F Protrusion 90 Movement restricting member 92 Packing 102 Rotating shaft 104 Rotating ring 106 Connecting member 108 Sliding control pipe 120 Link member 122 Rod 124 Connecting member 124A Protrusion 124B Through hole 124C Connecting side engaged part 146 Operation part main body 180 Wire fixing member 246 Operation part main body 280 Wire fixing member 346 Operation part Main body 346A Engagement part 346B Protrusion 380 Wire fixing member 388 Holding member 388A Member 388B Member 388C First groove 388D Second groove 446 Operation part Main body 480 Wire fixing member 488A Member 488B Member 488C First groove 488D Second groove Ax Long axis direction

Claims

A hand operation unit provided with an operation member and
An insertion portion provided on the tip side of the hand operation portion and inserted into the subject, and an insertion portion.
A treatment tool standing stand provided at the tip of the insertion portion and
An upright operation wire that operates the treatment tool stand by connecting the tip end side to the treatment tool stand and pushing and pulling according to the operation of the operation member.
The wire channel through which the standing operation wire is inserted and
It is a wire fixing member for fixing the base end side of the standing operation wire, and a through hole having a length in the longitudinal axis direction through which the standing operation wire is inserted is formed, and a through hole is formed on the outer peripheral surface along the through hole. A wire gripping member having a slit, a sliding member accommodating the wire gripping member, a holding member holding the sliding member, and a tip formed on the holding member along the longitudinal axis direction of the standing operation wire. A wire fixing member that integrally includes an engaging portion that extends to the side and has a protrusion at the tip.
A sliding control pipe arranged on the side of the base end of the hand operating portion and slidably accommodating the sliding member of the wire fixing member,
A link member that includes a connecting member that accommodates the wire fixing member and enables connection with the wire fixing member, and a rod that is connected to the operating member, and is arranged outside the hand operating portion. An endoscope comprising a link member capable of sliding the wire fixing member in the longitudinal axis direction of the standing operation wire in conjunction with the operation member.
The wire fixing member is moved so that the sliding member and the wire gripping member are relatively close to each other by the rotational operation of the holding member, thereby tightening the wire gripping member and reducing the gap between the slits. The diameter of the through hole is reduced to fix the standing operation wire.
The hand operating portion has at least one groove that engages with the protrusion of the engaging portion on the side of the base end.
The groove has a first movable region through which the engaging portion is passed in the longitudinal axis direction of the standing operation wire when the wire fixing member is attached and detached, and the groove is engaged with the wire fixing member when the wire fixing member is rotated. A movement restricting region that allows the joint portion to pass in the rotational direction and restricts the movement of the standing operation wire in the longitudinal axis direction, and the wire fixing member are positioned at a fixed position of the standing operation wire. An endoscope including a second movable region through which the engaging portion is passed in the longitudinal axis direction of the standing operation wire while the treatment tool standing base moves between the lying position and the standing position. ..
The endoscope according to claim 1, wherein the at least one groove includes a plurality of grooves formed on both sides of the outer peripheral surface of the hand operation portion.
A hand operation unit provided with an operation member and
An insertion portion provided on the tip side of the hand operation portion and inserted into the subject, and an insertion portion.
A treatment tool standing stand provided at the tip of the insertion portion and
An upright operation wire that operates the treatment tool stand by connecting the tip end side to the treatment tool stand and pushing and pulling according to the operation of the operation member.
The wire channel through which the standing operation wire is inserted and
It is a wire fixing member for fixing the base end side of the standing operation wire, and a through hole having a length in the longitudinal axis direction through which the standing operation wire is inserted is formed, and a through hole is formed on the outer peripheral surface along the through hole. A wire gripping member having a slit, a sliding member accommodating the wire gripping member, at least one first groove holding the sliding member and extending along the longitudinal axis direction of the standing operation wire, and at least one. A wire fixing member integrally including a holding member having two second grooves, and a wire fixing member.
A sliding control pipe arranged on the side of the base end of the hand operating portion and slidably accommodating the sliding member of the wire fixing member,
A link member that includes a connecting member that accommodates the wire fixing member and enables connection with the wire fixing member, and a rod that is connected to the operating member, and is arranged outside the hand operating portion. An endoscope comprising a link member capable of sliding the wire fixing member in the longitudinal axis direction of the standing operation wire in conjunction with the operation member.
The wire fixing member is moved so that the sliding member and the wire gripping member are relatively close to each other by the rotational operation of the holding member, thereby tightening the wire gripping member and reducing the gap between the slits. The diameter of the through hole is reduced to fix the standing operation wire.
The hand operating portion includes an engaging portion extending toward the wire fixing member on the base end side and having a protrusion at the tip.
The first groove allows the engaging portion to pass in the longitudinal axis direction of the standing operation wire when the wire fixing member is attached and detached, and the engaging portion passes the wire when the wire fixing member is rotated. The fixing member is restricted from moving in the longitudinal axis direction of the standing operation wire, and the second groove causes the treatment tool standing base to lie down when the wire fixing member is positioned at a fixed position of the standing operation wire. An endoscope that allows the engaging portion to pass in the longitudinal direction of the standing operating wire while moving between positions.
The third aspect of claim 3, wherein the at least one first groove includes a plurality of first grooves, and the at least one second groove includes a plurality of second grooves having the same number as the number of the plurality of first grooves. Endoscope.
4. The endoscope described in the first paragraph.
The endoscope according to claim 5, wherein the sliding member has a snap regulating member that regulates elastic deformation of the snap.
The sliding member of the wire fixing member has a sliding side engaging portion on the outer peripheral surface thereof.
A through hole is formed in the connecting member, and the through hole has a connecting side engaged portion that allows the sliding member to move in the wire axial direction and engages with the sliding side engaging portion. The endoscope according to any one of claims 1 to 6, which regulates the rotation of the sliding member.