JP5800500B2 - Endoscope - Google Patents

Description

  The present invention relates to an endoscope in which a bending portion provided in an insertion portion performs a bending operation by pulling and loosening an angle wire.

In recent years, endoscopes are used in the medical field, industrial field, and the like.
Endoscopes used in the medical field can observe by inserting an elongated insertion portion into the body, and can perform various treatments by inserting a treatment instrument into a treatment instrument insertion channel as necessary. .

  On the other hand, endoscopes used in the industrial field inspect for scratches, corrosion, etc. by inserting an elongated insertion portion into an engine of a boiler, a gas turbine engine, an airplane, an automobile, or a chemical plant. be able to.

  A bending portion and a distal end portion are provided on the distal end side of the insertion portion of the endoscope. An operation wire (also referred to as an angle wire) that is a pulling member extends from the curved portion. The bending portion is configured to perform a bending operation when the operation wire is pulled or loosened in accordance with an operation of an operation lever or the like provided in the endoscope operation portion.

  The operation wire extends from the bending portion, and is guided through the coil pipe (also referred to as a wire guide), which is a protection member, to the operation portion. The distal end of the coil pipe is fixed to the inner peripheral surface of the front base connecting the curved portion and the flexible tube portion by a fixing means such as brazing, and the proximal end of the coil pipe is the proximal end of the flexible tube portion. It is fixed to the part or the operation part.

  For example, Patent Document 1 shows that the front and rear ends of two wire guides provided in the flexible tube portion are fixedly attached to the inner surface of the front and rear end portions of the flexible tube portion. .

Japanese Patent No. 2702922

  However, as the diameter of the endoscope insertion portion is reduced, the diameter of the front cap becomes smaller, making it difficult to fix two or more coil pipes to the inner peripheral surface of the front cap or the like. In particular, when the tip of the coil pipe is joined to the base by soldering or brazing, there is a problem that solder or the like protrudes around the coil pipe and the internal space is reduced. Since the internal space is reduced, the signal line or the light guide fiber is loaded when the built-in signal line or the light guide fiber is inserted, and the signal line or the light guide fiber is cut. There is a fear.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an endoscope that is excellent in assembling workability and that can perform a wire guide fixing work with high accuracy and reliability.

An endoscope according to an aspect of the present invention extends from a bending portion provided in an insertion portion and is pulled and relaxed to cause the bending portion to bend, and the endoscope is provided in the insertion portion and is connected to the bending portion. A wire guide that is disposed in the flexible tube portion to be installed and through which the angle wire is inserted, a pipe-shaped base member that is attached to at least the distal end side of the flexible tube portion, and an inner peripheral surface of the base member anda wire guide fixing member having a peripheral surface portion in which the tip end portion of the disposed outer circumferential surface portion and the wire guide is fixed is arranged, the wire guide fixing member is a pipe-shaped member , reaches the circumferential end surface provided on the peripheral portion by cutting a part of the other end of that provided in the peripheral portion by cutting a part circumferential end surface or al the pipe-shaped member at one end of the pipe-shaped member , the pipe-shaped portion Parallel notches relative axial and, the portion of the end portion of the pipe-shaped member by cutting the provided, circumferential end surface及 beauty the axis formed by being cut in a direction perpendicular to the axis a first opening that issued dew against the outside inner peripheral surface of the entire surface with a first plane formed by being cut parallel to the direction, excised portion of the other end portion of the pipe-shaped member provided Te, the orientation of the first opening and the opening is different, parallel to the first plane is cut parallel to the circumferential end surface及 beauty the axial direction are formed is cut in a direction perpendicular to the axis a second opening that out dew the entire surface of the inner surface to the outside and a second plane, comprising a, and the second opening and the first opening, the peripheral having the notch It is provided across the part .

  According to the present invention, it is possible to realize an endoscope that is excellent in assembling workability and can perform a wire guide fixing work with high accuracy and reliability.

The figure explaining an endoscope system The figure explaining the structure near the connection part of a flexible tube part and a bending part, and the built-in thing penetrated in the insertion part (cross-sectional view corresponding to the Y2-Y2 line of FIG. 3) A pair of half-pipe plate members that are one configuration example of a wire guide fixing member fixed in a fixing hole of a large-diameter portion that constitutes a flexible tube tip connecting portion, and a wire fixed to the half-pipe plate member Illustration explaining the guide The figure explaining the half-pipe-shaped board member comprised from an annular member The figure explaining the procedure which fixes a wire guide to a half pipe plate member The figure explaining the state which fixed the half pipe-shaped board member with which the wire guide was fixed to the fixing hole of the large diameter part which comprises a flexible tube front-end | tip connection part (sectional drawing corresponding to the Y2-Y2 line | wire of FIG. ) The figure explaining the other structural example of a wire guide fixing member The figure explaining a pipe-shaped wire guide fixing member FIG. 9 is an axial sectional view of the pipe-shaped wire guide fixing member of FIG. 8 and illustrates a state in which two wire guides are fixed. The figure explaining the elastic wire guide fixing member which has a notch opening in the side peripheral surface of a pipe-shaped wire guide fixing member

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, an endoscope system 1 of the present embodiment is connected to an endoscope 10 having an elongated insertion portion 2 and a universal cord 4 extending from an operation portion 3 of the endoscope 10. The apparatus main body 30 is provided.

  The insertion portion 2 includes, in order from the distal end side, a distal end portion 2a, a bending portion 2b configured to be able to be bent in the vertical direction, and a flexible tube portion 2c formed in a long shape having flexibility. Configured. An imaging device (not shown) having an imaging device is built in the distal end portion 2a.

The operation unit 3 is provided with, for example, a bending operation lever 3a for performing an operation for bending the bending unit 2b. The bending portion 2b is configured to bend upward or downward depending on the tilting operation of the bending operation lever 3a.
In addition to the bending operation lever 3a, the operation unit 3 is provided with various switches (not shown) for instructing various imaging operations of the imaging device provided in the distal end portion 2a, for example.

The apparatus main body 30 is provided with a monitor 31 that displays an endoscopic image captured by the imaging apparatus. For example, a box-shaped exterior casing 32 constituting the exterior of the apparatus main body 30 has an image processing CPU, an electrical component (not shown) such as a recording device for recording a processed image, and a light source device for supplying illumination light. (Not shown), a battery unit (not shown) for supplying power, and the like are disposed.
The power of the battery is supplied to the imaging device, the monitor 31, electric components, a light source device, and the like.

  In the universal cord 4, a signal cable connected to the imaging device, a light guide fiber bundle (hereinafter abbreviated as a fiber bundle) that transmits illumination light of the light source device, and the like are inserted.

As shown in FIGS. 2 and 3, in the flexible tube portion 2c and the bending portion 2b, for example, one signal cable 5 extending to the distal end portion 2a, two fiber bundles 6a, 6b divided into two, An angle wire is inserted. And the wire guide is arrange | positioned in the flexible tube part.
Reference numeral 7wu is an upward angle wire, and reference numeral 7wu is a downward angle wire. Reference numeral 7gu is an upper wire guide, and reference numeral 7gd is a lower wire guide. The wire guides 7gu and 7gd are coil pipes constituted by closely wound coils, and have holes through which the angle wires 7wu and 7wd are inserted.

  The wire guides 7 gu and 7 gd prevent the angle wires 7 wu and 7 wd that can be moved forward and backward from coming into contact with the signal cable 5 and the fiber bundles 6 a and 6 b that are built-in in the flexible tube portion 2 c.

As shown in FIG. 2, the bending portion 2 b mainly includes a bending piece portion set 21 in which a plurality of bending pieces are connected, and a bending rubber 22. The bending piece portion group 21 includes a proximal bending piece 23, and a plurality of types of intermediate bending pieces 24, 24,... Which are rotatably connected between the proximal bending piece 23 and a distal bending piece (not shown). It is comprised by.
The proximal end bending piece 23 is fixed to a predetermined position of a flexible tube distal end connecting portion 8 to be described later, which is a cap member constituting the distal end portion of the flexible tube portion 2c.

The curved rubber 22 is a tubular member made of rubber or resin having flexibility and stretchability. The base end portion of the curved rubber 22 is integrally fixed in a state in which the bobbin fixing portion 25 is provided while being covered with the base end bending piece 23 and watertightness is maintained.
In addition, the front-end | tip part of the curved rubber 22 is integrally fixed to the front-end | tip structural member (not shown) which comprises the front-end | tip part 2a in the state holding watertight.

  As shown in FIGS. 2 and 3, the flexible tube distal end connecting portion 8 is configured by a pipe-shaped stepped member having a large diameter portion 8 a and a small diameter portion 8 b. At the stepped portion 8c between the large diameter portion 8a and the small diameter portion 8b, the distal end portion of the flexible tube portion 2c is externally disposed.

  A fixing hole 8d having a predetermined depth is formed in the large diameter portion 8a, and an axial through hole 8e that connects the fixing hole 8d and the outside is formed in the small diameter portion 8b. The fixing hole 8d and the axial through hole 8e are concentric. The hole diameter of the axial through hole 8e is smaller than the inner diameter of the fixing hole 8d, and the bottom surface of the fixing hole 8d is configured as a positioning surface 8f.

In the fixing hole 8d, a proximal bending piece 23 and a pair of half-pipe plate members 9u and 9d which are wire guide fixing members to be described later are fixed. One end surface 9e of each of the half-pipe plate members 9u and 9d is disposed in contact with the positioning surface 8f.
The fixing hole 8d serves as both a fixing portion for fixing the pair of half-pipe plate members 9u and 9d and a fixing portion for fixing the proximal bending piece 23.

  In addition, the code | symbol 8h shown in FIG. 3 is an adhesive hole. The adhesive hole 8h is a through-hole that communicates the fixing hole 8d of the large-diameter portion 8a with the outside, and has a central axis that is orthogonal to the central axis of the flexible tube tip connecting portion 8 and is circumferentially equivalent. For example, four are formed at intervals.

As shown in FIG. 2, the flexible tube portion 2 c is configured by a metal belt-like spiral tube 11, a sheath-covered mesh tube 12, a sheath tube 13, and an exterior mesh tube 14 having a multilayer structure.
The strip-shaped spiral tube 11 is formed by forming a strip-shaped plate member having a predetermined thickness and width as a spiral tube. The outer sheath-covered mesh tube 12 covers from the distal end to the proximal end of the strip-shaped spiral tube 11. The outer tube 13 is an elastomer such as urethane resin having high extensibility, and is covered from the distal end to the proximal end of the strip-shaped spiral tube 11 in order to maintain watertightness.
For example, the outer tube 13 and the outer mesh tube 14 constituting the flexible tube portion 2c are disposed on the step portion 8c, and are fixed integrally with the flexible tube tip connecting portion 8 by providing an adhesive or a thread winding fixing portion. .

  The upper half-pipe plate member 9u and the lower half-pipe plate member 9d are two-division pipe members formed by dividing the annular member 90 into two parts as shown in FIG. The annular member 90 is an axial division line including the central axis 90a of the annular member 90. In other words, the annular member 90 is an axial division indicated by a two-dot chain line including the central axis 90a of the annular member 90. Divided by the surface 90s.

  The half-pipe-like plate member 9u and the lower half-pipe-like plate member 9d configured by dividing the annular member 90 by the axial direction dividing surface 90s are the inner peripheral surfaces of the fixing holes 8d formed in the large-diameter portion 8a. The outer peripheral surface portion 9o disposed on the inner peripheral surface portion 9i, the inner peripheral surface portion 9i on which the distal ends of the wire guides 7gu and 7gd are disposed and fixed, and the opening 9m that exposes the entire inner peripheral surface portion 9i to the outside.

  The outer diameter of the annular member 90 and the inner diameter of the fixing hole 8d of the flexible tube tip connecting portion 8 are the same size, and the dimensions are set so that the annular member 90 can be disposed in the fixing hole 8d. Yes. Further, in a state where the annular member 90 is disposed in the fixing hole 8d, the inner diameter of the annular member 90 and the inner diameter of the axial through hole 8e of the flexible tube tip connecting portion 8 are set to the same size. .

Here, the attachment of the upper wire guide 7gu and the lower wire guide 7gd to the flexible tube tip connecting portion 8 will be described.
The operator performs the work of fixing the wire guides 7gu and 7gd to the half-pipe plate members 9u and 9d, and then connects the half-pipe plate members 9u and 9d to which the wire guides 7gu and 7gd are fixed to the distal end of the flexible tube. The work of fixing to the fixing hole 8d of the portion 8 is performed.

First, an operation of fixing the wire guides 7gu and 7gd to the half pipe plate members 9u and 9d will be described.
As shown in FIG. 5, the operator prepares an upper wire guide 7gu through which the upper angle wire 7wu is inserted and an upper half-pipe plate member 9u. An operator arrange | positions a front-end | tip part in the center part which is a predetermined position of the internal peripheral surface part 9i of the upper half pipe-shaped board member 9u, as shown to the broken line in a figure. Thereafter, the operator integrally fixes the tip end portion of the upper wire guide 7gu to the upper half pipe plate member 9u through the opening 9m, for example, by the solder 91.

  Thereafter, the operator prepares a lower wire guide 7gd into which the lower angle wire 7wd is inserted and a lower half-pipe-like plate member 9d, and the tip of the lower wire guide 7gd is attached in the same procedure as described above. The lower half-pipe plate member 9d is disposed at a predetermined position biased to one end side from the central portion of the inner peripheral surface portion 9i and fixed integrally.

  During these operations, the operator can perform the operation of arranging the wire guides 7gu and 7gd on the inner peripheral surface portion 9i through the opening 9m and the operation of soldering the wire guides 7gu and 7gd to the inner peripheral surface portion 9i. In addition, the operator can reliably and easily perform the melting of the solder from directly above the wire guides 7gu and 7gd through the opening 9m and the confirmation of the molten state of the solder as indicated by the arrows.

  As a result, there is a problem that the internal space is reduced when a pair of half-pipe plate members 9u and 9d are combined with more than necessary solder and the solder is unevenly distributed and the solder strength becomes unstable. Etc. are prevented.

Next, the operation of arranging the half-pipe plate members 9u, 9d to which the wire guides 7gu, 7gd are fixed in the fixing holes 8d of the flexible tube tip connecting portion 8 will be described.
The operator inserts the upper half pipe plate member 9u with the upper wire guide 7gu and the lower half pipe plate member 9d with the lower wire guide 7gd into the fixing hole 8d. Thereafter, as shown in FIG. 6, the operator makes the end surface 9e of each half-pipe plate member 9u, 9d abut on the positioning surface 8f and flexes the upper wire guide 7gu and the lower wire guide 7gd. It arrange | positions in the predetermined position of the pipe | tube tip connection part 8. FIG.

After the positioning is completed, the operator applies the adhesive 92 to the adhesive hole 8h formed in the large-diameter portion 8a of the flexible tube tip connecting portion 8 (see FIG. 3).
Thus, the upper half-pipe plate member 9u and the lower half-pipe plate member 9d are fixed in the fixing hole 8d of the large-diameter portion 8a, and the wire guides 7gu and 7gd are connected to the flexible tube tip connection portion. It is fixed at 8 predetermined positions.

  Note that the proximal end portion of the upper wire guide 7gu and the proximal end portion of the lower wire guide 7gd are fixed to a predetermined position in the operation unit 3, for example. The distal ends of the angle wires 7wu and 7wd extending from the distal ends of the wire guides 7gu and 7gd are fixed at predetermined positions of the distal bending pieces, and the proximal ends extend from the proximal ends of the wire guides 7gu and 7gd. And is fixed at a predetermined position in the operation unit 3.

  Thus, the half-pipe-like plate member constituted by dividing the wire guide fixing member to which the tip end portion of the wire guide is fixed into two by the axial direction dividing surface including the central axis of the annular member, As a result, the entire inner peripheral surface portion can be visually confirmed from the opening. Therefore, when fixing the tip of the wire guide to the half-pipe-like plate member, it is possible to easily and reliably confirm the fixed state by solder or the like through the opening.

  Moreover, after arrange | positioning the half pipe-shaped board member to which the wire guide was fixed to the fixing hole of a flexible tube front-end | tip connection part, the end surface of each half pipe-shaped board member is made to contact | abut to a positioning surface, and a wire The guide can be fixed at a predetermined position of the flexible tube tip connecting portion with high accuracy.

Further, a built-in object is sandwiched in advance between a pair of half-pipe plate members to which the wire guide is fixed, and the pair of half-pipe plate members in the sandwiched state are fixed in the fixing holes of the flexible tube tip connecting portion. It is possible to set up. By this, when the outer diameter of the built-in object approximates the internal space, or when a part of the built-in object has a part whose outer diameter is larger than the internal space and cannot be inserted through the internal space Even so, it is possible to dispose the built-in object in the insertion portion without requiring an insertion operation.
And since the insertion work of a built-in thing is difficult, the diameter reduction of the flexible tube front-end | tip connection part which was enlarged in diameter can be achieved, and the diameter reduction of an insertion part is realizable.

In the above-described embodiment, the wire guide fixing member to which the distal end portion of the wire guide is fixed is a half-pipe-like plate member configured by dividing the annular member into two parts.
However, the wire guide fixing member is not limited to the half-pipe plate member, and may be a four-divided pipe member configured by dividing the annular member into four as shown in FIG.

The four-divided pipe members are an upper curved plate member 9Au, a lower curved plate member 9Ad, a left curved plate member 9Al, and a right curved plate member 9Ar, and the annular member 90 shown in FIG. The surface 90s and a second axially divided surface (not shown) orthogonal to the axially divided surface 90s are divided.
As shown in FIG. 7, each of the curved plate members 9Au, 9Ad, 9Al, 9Ar includes an outer peripheral surface portion 9Ao, an inner peripheral surface portion 9Ai, and an opening portion 9Am. The wire guides 7gu, 7gd, 7gl, and 7gr are fixed to the inner peripheral surface portions 9Ai of the curved plate members 9Au, 9Ad, 9Al, and 9Ar through the openings 9Am.

Then, the upper curved plate member 9Au with which the upper wire guide 7gu is integrated, the lower curved plate member 9Ad with which the lower wire guide 7gd is integrated, the left curved plate member 9Al with which the left wire guide 7gl is integrated, and the right wire guide 7gr. , The right curved plate member 9Ar is disposed at a predetermined position in the fixing hole 8d and fixed in the fixing hole 8d by the adhesive 92.
As a result, even in an endoscope having a bending portion configured to bend in four directions, up, down, left, and right, the wire guides 7gu, 7gd, 7gl, and 7gr are placed at predetermined positions of the flexible tube tip connecting portion 8. It can be fixed easily and with high accuracy and reliability.

  Moreover, in embodiment mentioned above, the wire guide fixing member to which the front-end | tip part of a wire guide is fixed is made into the division | segmentation pipe member comprised by dividing | segmenting an annular member. However, the wire guide fixing member may be configured as shown in FIGS.

  8 and 9 are modifications of the wire guide fixing member, FIG. 8 is a view showing a pipe-shaped wire guide fixing member, and FIG. 9 is a state in which two wire guides are fixed to the pipe-shaped wire guide fixing member. FIG.

  The wire guide fixing member of this embodiment is a pipe-like member 9B shown in FIG. The pipe-shaped member 9B has a first opening 9Bm1 configured by cutting out one end of a pipe member as shown by a solid line and a broken line in a predetermined state, and a configuration in which the other end is cut out in a predetermined state. And a second opening 9Bm2.

  The outer diameter of the pipe-shaped member 9B is the same as the inner diameter of the fixing hole 8d of the flexible tube tip connecting portion 8, and the dimension is set so that the pipe-shaped member 9B can be disposed in the fixing hole 8d. Further, in the state where the pipe-like member 9B is disposed in the fixing hole 8d, the inner diameter of the pipe-like member 9B and the inner diameter of the axial through hole 8e of the flexible tube tip connecting portion 8 are set to the same size. .

  The first opening 9Bm1 exposes the inner peripheral surface of the pipe-like member 9B. The inner peripheral surface exposed by the first opening 9Bm1 is configured as an inner peripheral surface portion 9Bi for arranging the wire guide 7gd. Moreover, 2nd opening part 9Bm2 exposes the internal peripheral surface of the pipe-shaped member 9B. The inner peripheral surface exposed by the second opening 9Bm2 is configured as an inner peripheral surface portion 9Bi for arranging the wire guide 7gu.

  The opening width dimension W of the opening 9Bm1 and the opening 9Bm2 is formed in consideration of workability. In the present embodiment, the opening width dimension W is obtained by cutting at least the end of the pipe member until it becomes the same dimension as the inner diameter diameter. In addition, the end of the pipe member may be further cut so that the opening width dimension W is set smaller than the inner diameter. Thus, the entire surface of the inner peripheral surface portion 9Bi is exposed to the outside from the first opening 9Bm1, and the entire surface of the inner peripheral surface portion 9Bi is exposed to the outside from the second opening 9Bm2.

  The first opening 9Bm1 and the second opening 9Bm2 of the pipe-shaped member 9B are provided so as to be displaced with respect to the axial direction of the pipe-shaped member 9B. In other words, the first opening 9Bm1 and the second opening 9Bm2 are provided with the peripheral portion 9Bc interposed therebetween.

In the pipe-shaped member 9B, the opening direction of the first opening 9Bm1 is different from the opening direction of the second opening 9Bm2. In the present embodiment, the first plane 9Bm1p of the first opening 9Bm1 and the second plane 9Bm2p of the second opening 9Bm2 are set in parallel.
In the present embodiment, the outer peripheral surface of the pipe-shaped member 9B is an outer peripheral surface portion 9Bo disposed on the inner peripheral surface of the fixing hole 8d.

Here, the attachment of the upper wire guide 7gu and the lower wire guide 7gd to the flexible tube tip connecting portion 8 will be described.
After the operator performs the work of fixing the wire guides 7gu and 7gd to the pipe-shaped member 9B, the pipe-shaped member 9B to which the wire guides 7gu and 7gd are fixed is placed in the fixing hole 8d of the flexible tube tip connecting portion 8. Arrange.

  For this purpose, the worker first places, for example, the lower wire guide 7gd shown by the broken line in FIG. 8 into which the lower angle wire 7wd is inserted on the inner peripheral surface 9Bi exposed by the first opening 9m1 of the pipe-like member 9B. Deploy.

  Thereafter, the operator integrally fixes the tip end portion of the lower wire guide 7gd to the predetermined position on the inner peripheral surface portion 9Bi of the pipe-shaped member 9B through the first opening 9m1 with, for example, the solder 91. During this work, the worker can perform the work of soldering the wire guide 7gd to the inner peripheral surface part 9Bi through the first opening 9m1. Then, the operator can surely and easily perform melting of the solder from above the wire guide 7gd and confirming the molten state of the solder as shown by the arrow Y9a through the first opening 9m1.

  Next, the worker arranges the upper wire guide 7gu through which the upper angle wire 7wu is inserted on the inner peripheral surface portion 9Bi exposed by the second opening 9m2 of the pipe-shaped member 9B. Thereafter, the operator integrally fixes the tip end portion of the upper wire guide 7gu to the predetermined position on the inner peripheral surface portion 9Bi of the pipe-shaped member 9B with the solder 91, for example, through the second opening 9m1. During this operation, the operator can perform the operation of soldering the wire guide 7gu to the inner peripheral surface portion 9Bi through the second opening 9m2. Then, the operator can surely and easily perform melting of the solder from above the wire guide 7gu and confirming the molten state of the solder as shown by the arrow Y9b through the second opening 9m2.

  In FIG. 9, the direction of the arrow Y9b is upward, but in the actual fixing operation of fixing the tip end portion of the upper wire guide 7gu to the inner peripheral surface portion 9Bi of the pipe-like member 9B by the solder 91, the pipe-like member Since the top and bottom of 9B is reversed, the upward arrow Y9b in the figure is downward.

  Thereafter, the operator attaches the pipe-shaped member 9B to which the wire guides 7gu and 7gd are fixed to the fixing hole of the flexible tube tip connecting portion 8 in the same manner as the pair of half-pipe plate members 9u and 9d described above. After placing in 8d, fix by gluing.

  According to this embodiment, by fixing the pipe-shaped member 9B in the fixing hole 8d of the large-diameter portion 8a, the wire guides 7gu and 7gd are determined in advance in the flexible tube tip connecting portion 8 in the same manner as described above. Can be fixed in place.

FIG. 10 is a view showing another modification of the wire guide fixing member, which is a pipe shape and shows a C-shaped wire guide fixing member when viewed from the front.
The wire guide fixing member of the present embodiment is a pipe-like member 9C shown in FIG. 10 and is made of metal having a predetermined elastic modulus and has a notch 93. As shown in FIG. 8, the pipe-shaped member 9C is provided with a first opening 9Bm1 and a second opening 9Bm2 with a peripheral portion 9Bc interposed therebetween.

  And the notch part 93 is formed in parallel with the axial direction of the pipe-shaped member 9C so that it may reach from the circumferential one end surface 9Bc1 of FIG. 8 to the circumferential other end surface 9Bc2. As a result, the pipe-shaped member 9C has a C-shape when viewed from the front as shown in FIG.

  In the present embodiment, the outer diameter of the pipe-shaped member 9 </ b> C is a larger dimension than the inner diameter of the fixing hole 8 d of the flexible tube tip connecting portion 8. The pipe-shaped member 9C is reduced in diameter against the elastic force and disposed in the fixing hole 8d. In the state where the pipe-shaped member 9C is disposed in the fixing hole 8d, the inner diameter of the pipe-shaped member 9C and the inner diameter of the axial through hole 8e of the flexible tube tip connecting portion 8 are set to the same size. .

  Note that the width dimension of the notch portion 93 is appropriately set in consideration of the outer diameter dimension of the pipe-shaped member 9C and the inner diameter dimension of the fixing hole 8d of the flexible tube tip connecting portion 8. As a result, the pipe-shaped member 9C is reduced in diameter against the elastic force and disposed in the fixing hole 8d, and then temporarily fixed in the fixing hole 8d by the restoring force of the pipe-shaped member 9C, or Can be placed in a fixed state.

  The other configuration of the pipe-shaped member 9C is the same as that of the pipe-shaped member 9B, and the same components are denoted by the same reference numerals and description thereof is omitted. In this embodiment, the procedure for fixing the wire guides 7gu and 7gd to the pipe-shaped member 9C is the same as the procedure for fixing the wire guides 7gu and 7gd to the pipe-shaped member 9B.

  On the other hand, in this embodiment, the procedure for disposing the pipe-like member 9C, to which the wire guides 7gu, 7gd are fixed, in the fixing hole 8d of the flexible tube tip connecting portion 8 is different. That is, as described above, the pipe-shaped member 9C to which the wire guides 7gu and 7gd are fixed is reduced in diameter against the elastic force and disposed in the fixing hole 8d, and then the restoring force of the pipe-shaped member 9C is obtained. The temporary arrangement state or the fixed state is entered. When the pipe-shaped member 9C is temporarily placed in the fixing hole 8d, the pipe-shaped member 9C is fixed to the fixing hole 8d by adhesion in the same manner as described above.

As described above, the pipe-shaped member is formed of an elastic member, and the notched portion is provided in the peripheral portion, so that the pipe-shaped member is expanded and deformed in the elastic deformation region, so that the built-in object via the notched portion Can be arranged in the internal space of the pipe-shaped member. As a result, by fixing the pipe-shaped member having the built-in object in the internal space in the fixing hole of the flexible tube tip connecting portion, the outer diameter of the built-in object approximates the internal space, or Even if the part has a portion whose outer diameter is larger than the internal space and cannot be inserted through the internal space, the built-in object can be arranged in the insertion portion without the need for insertion work. .
The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 ... Endoscopy system 2 ... Insertion part 2a ... Tip part 2b ... Bending part
2c ... Flexible tube part 3 ... Operation part 3a ... Bending operation lever 4 ... Universal cord 5 ... Signal cable 6a ... Fiber bundle 7gd ... Lower wire guide 7gl ... Left wire guide 7gr ... Right wire guide
7gu… Upper wire guide 7wd… Down angle wire
7wu ... Upper angle wire 8 ... Flexible tube tip connecting part 8a ... Diameter part
8b ... Small diameter portion 8c ... Step portion 8d ... Fixing hole 8e ... Axial through hole
8f ... Positioning surface 8h ... Adhesive hole 9Ad ... Lower curved plate member 9Ai ... Inner peripheral surface portion 9Al ... Left curved plate member 9Am ... Opening 9Ao ... Outer peripheral surface portion
9Ar: Curved plate member for right 9Au ... Curved plate member for upper side 9B: Pipe-shaped member
9Bc ... peripheral portion 9Bc1 ... peripheral one end surface 9Bc2 ... peripheral other end surface 9Bi ... inner peripheral surface portion 9Bm1 ... first opening 9Bm1p ... first plane 9Bm2 ... second opening
9Bm2p ... 2nd plane 9Bo ... Outer peripheral surface part 9C ... Pipe-shaped member
9d: Lower half-pipe-like plate member 9e ... One end face 9i ... Inner peripheral surface portion 9m ... Opening portion 9m1 ... First opening portion 9m2 ... Second opening portion 9o ... Outer peripheral surface portion
9u: Upper half-pipe plate member 9d: Lower half-pipe plate member 10: Endoscope 11 ... Strip-shaped spiral tube 12 ... Outer sheath coated mesh tube 13 ... Outer sheath tube 14 ... Outer mesh tube 21 ... Bending piece part set 22 ... Curve Rubber 23 ... Base end bending piece 24 ... Intermediate bending piece 25 ... Fixing part 30 ... Device main body 31 ... Monitor 32 ... Exterior casing
90 ... annular member 90a ... center axis 90s ... axially divided surface 91 ... solder
92 ... Adhesive 93 ... Notch

Claims (2)

An angle wire that extends from the bending portion provided in the insertion portion and is pulled and relaxed to bend the bending portion;
A wire guide that is provided in the insertion portion and arranged in a flexible tube portion that is continuous with the bending portion, and through which the angle wire is inserted;
A pipe-shaped base member attached to at least the distal end side of the flexible tube portion;
Anda wire guide fixing member having an inner peripheral surface portion of the tip end portion of the outer peripheral surface portion and the wire guide is fixed are arranged along the inner circumferential surface of said die member is disposed,
The wire guide fixing member is a pipe-shaped member,
Reaches the circumferential end surface provided on the peripheral portion by cutting a part of the other end of that provided in the peripheral portion by cutting a part circumferential end surface or al the pipe-shaped member at one end of the pipe-shaped member, A notch parallel to the axial direction of the pipe-shaped member;
Provided by cutting a part of one end portion of the pipe-shaped member, a first plane formed by being cut parallel to the circumferential end surface及 beauty the axial direction are formed is cut in a direction perpendicular to the axis a first opening that out dew the entire surface of the inner surface to the outside have,
The portion of the other end portion of the pipe-shaped member is a provided by ablation, the orientation of the first opening and the opening is different, circumferential end surface及 beauty the axis formed by being cut in a direction perpendicular to the axis includes a second opening that out dew the entire surface of the inner surface to the outside a second plane parallel to said first plane being parallel to the cutting direction, and
The endoscope, wherein the first opening and the second opening are provided with a peripheral portion having the cutout portion interposed therebetween.   The wire guide fixing member having the notch is made of metal having elasticity, and the outer diameter of the pipe-shaped member is larger than the inner diameter of the base member, and the inner peripheral surface of the base member is elastically deformed. The endoscope according to claim 1, wherein the endoscope is fixed or temporarily fixable.

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