WO2019155795A1

WO2019155795A1 - Endoscope

Info

Publication number: WO2019155795A1
Application number: PCT/JP2019/000018
Authority: WO
Inventors: 原田　高志
Original assignee: 富士フイルム株式会社
Priority date: 2018-02-09
Filing date: 2019-01-04
Publication date: 2019-08-15
Also published as: CN111542252A; JP6865862B2; CN111542252B; JPWO2019155795A1

Abstract

Provided is an endoscope with which it is possible to improve the cleanability of the endoscope while easily attaching and detaching a proximal end of a wire to and from a raising mechanism. The endoscope comprises: a movable member (96) that is disposed and exposed on the exterior of a manipulation part (22), and operates in tandem with the manipulation of a raising lever (20); a sleeve (156) that is disposed and exposed on the exterior of the manipulation part (22), and rotatably supports the movable member (96) on the manipulation part (22); a first bearing part (162) that is provided on the mobile member (96), has a closed-bottom recess (163) formed on an inner surface facing the manipulation part (22), and accommodates the sleeve (156) in the recess (163) and covers the sleeve (156); an O-ring (158) disposed between the outer circumferential surface of the sleeve (156) and the inner circumferential surface of the recess (163); a wire (60) that is linked at a distal end thereof to a raisable platform (30), and at a proximal end thereof to the movable member (96); and an attachment member (98) that is provided at the proximal end of the wire (60) and detachably engages with the movable member (96).

Description

Endoscope

The present invention relates to an endoscope, and more particularly, to an endoscope provided with a treatment instrument stand that changes the direction in which a treatment instrument is led out at the distal end of an insertion portion.

In an endoscope, various treatment instruments are introduced from a treatment instrument introduction port provided in a hand operation section (hereinafter referred to as “operation section”), and the treatment instrument is opened to the distal end member of the insertion section. Derived from the device outlet to the outside and used for treatment. For example, a treatment tool such as forceps or a contrast tube is used in a duodenoscope, and a treatment tool such as a puncture needle is used in an ultrasonic endoscope. Such a treatment tool needs to change the derivation direction of the treatment tool derived from the treatment instrument outlet in order to treat a desired position in the subject. For this reason, a treatment instrument stand (hereinafter referred to as “stand stand”) is provided on the distal end member, and a treatment instrument stand for changing the posture of the stand between the standing position and the lying position is provided on the operation unit. A mechanism is provided.

As a treatment instrument stand-up mechanism, a wire pulling type mechanism is known in which the tip of a wire (also referred to as a forceps raising wire) is directly attached to a stand (see Patent Document 1). This mechanism connects the proximal end side of the wire to a standing operation lever (also referred to as a forceps raising lever) provided in the operation unit, and rotates the stand by pushing and pulling the wire with the standing operation lever. It is rotated around an axis to change its posture between the standing position and the lying position.

More specifically, the operation part of the cited document 1 is provided with a grip part for holding the operation part by hand and an angle knob. In this operation portion, the wire opening is provided below the grip portion, and the drive shaft opening is provided in the grip portion. The base end of the wire is led out from the wire opening, and from the drive shaft opening, The tip of the drive shaft moved by the forceps raising lever is derived. The distal end of the drive shaft and the proximal end of the wire are detachably coupled to the connection tool, and a protective cover that covers the connection tool is detachably provided on the operation unit.

On the other hand, Patent Document 2 discloses an endoscope in which a base end of a cable cord is led out from a base end of a control handle and a collet is connected to the base end of the cable cord. The collet is fastened to the nut and is moved in the front-rear direction by the operation lever.

JP-A-6-315458 EP 1759626

However, the endoscope of Patent Document 1 has a configuration in which a connecting tool that connects the drive shaft, which is an upright operation mechanism, and the proximal end of the wire is housed in a narrow interior of the operation unit. There has been a problem that the operation of attaching and detaching the base end of this is complicated.

Also, the endoscope disclosed in Patent Document 1 has a problem that the operation unit is enlarged by the amount that the connection tool is accommodated in the operation unit.

On the other hand, in the endoscope of Patent Document 2, the cable cord is led out to the outside of the control handle and the tip of the cable cord is detachably attached to the collet and the nut. However, the attaching / detaching operation is complicated.

Also, when the endoscope is used for various examinations or treatments, the entire endoscope is also cleaned. At this time, in the endoscope of Patent Document 2, it is necessary to clean the tip of the cable cord, the collet and the nut exposed to the outside of the control handle, but the tip of the cable cord, the collet and the nut are small parts. Therefore, there has been a problem that it takes considerable time and labor to clean such small parts.

As described above, in any of the conventional techniques, a technique capable of improving the cleaning performance of the endoscope while easily performing the attaching / detaching operation of the proximal end of the wire with respect to the standing operation mechanism is still insufficient. I couldn't.

The present invention has been made in view of such circumstances, and provides an endoscope capable of improving the cleanability of the endoscope while easily performing the attaching / detaching operation of the proximal end of the wire with respect to the standing operation mechanism. For the purpose.

In order to achieve an object of the present invention, an endoscope of the present invention is provided with an operation portion provided with an operation member, an insertion portion provided on the distal end side of the operation portion, and a distal end portion of the insertion portion. The treatment instrument stand, a movable member exposed outside the operation unit and operating in conjunction with the operation of the operation member, and an exposure member arranged outside the operation unit to rotatably support the movable member on the operation unit. A first shaft portion and a first bearing portion provided on one end side of the movable member, wherein a bottomed recess is formed on an inner surface facing the operation portion, and the first shaft portion is accommodated in the recess. A first bearing portion covering the first shaft portion, a seal member disposed between the outer peripheral surface of the first shaft portion and the inner peripheral surface of the concave portion of the first bearing portion, and the distal end side Connected to the treatment instrument stand, the proximal end side is connected to the movable member, and the treatment instrument is raised by being pushed and pulled according to the movement of the movable member. And standing operation wire for operating the platform, provided at the base end of the rising operation wire, comprising a mounting member engaged detachably to the movable member.

In one embodiment of the present invention, the first shaft portion is preferably a shaft portion that transmits the operation of the operation portion to the movable member.

One aspect of the present invention is a second bearing portion provided on the other end side of the movable member, and has a through hole from an inner surface facing the operation portion to an outer surface opposite to the inner surface. A second bearing portion, a second shaft portion inserted into the through hole and fixed to the operation portion, and pivotally supporting the second bearing portion to the operation portion via the through hole; and an outer surface side of the through hole And a closing member that closes the opening.

In one embodiment of the present invention, it is preferable that an engagement hole is provided in one of the movable member and the attachment member, and an engagement portion that is detachably engaged with the engagement hole is provided in the other.

In one embodiment of the present invention, the engaging portion is preferably provided with an elastically deforming portion that is elastically deformed and engaged with the engaging hole.

In one embodiment of the present invention, the elastically deforming portion is formed with a pair of elastically deformable claws that are engaged with the edge of the engaging hole, and engages or disengages the engaging hole and the engaging portion. In doing so, it is preferable to displace the pair of claw portions in a direction to approach each other by elastic deformation.

In one embodiment of the present invention, the engaging portion has a cylindrical portion that is inserted into the engaging hole, and the elastically deforming portion is configured by a slit portion provided at a tip portion of the cylindrical portion. It is preferable that the slit portion is configured to be able to be reduced in diameter by elastic deformation when the distal end portion of the portion is inserted into the engagement hole.

In one embodiment of the present invention, the engagement hole has a narrow portion having a first width and a wide portion having a second width larger than the first width, and the engagement portion has a first width or less. It is preferable to have a shaft portion having an outer diameter and a diameter-increased portion provided at the tip of the shaft portion and having an outer diameter larger than the first width and smaller than the second width.

In one embodiment of the present invention, the engagement hole has a narrow portion having a first width and a wide portion having a second width larger than the first width, and the engagement portion has a first width or less. A shaft portion having an outer diameter, and a diameter-enlarging portion that is provided at the tip of the shaft portion, has an outer diameter larger than the second width, and is formed with a plurality of slit grooves, serving as an elastic deformation portion. When the enlarged diameter portion is inserted into the wide portion, the enlarged diameter portion is preferably configured to be elastically deformable by a plurality of slits so that the diameter can be reduced.

In one aspect of the present invention, the engagement hole provides friction resistance to the shaft portion by contacting the outer peripheral surface of the shaft portion when the shaft portion is moved between the narrow portion and the wide portion. It is preferable to have a part.

In one embodiment of the present invention, a cylindrical body extending in a direction perpendicular to the axial direction of the standing operation wire is provided on one of the movable member and the mounting member, and the other is rotatable on the outer periphery of the cylindrical body. It is preferable that an annular body to be engaged is provided and a rotation restricting stopper for restricting relative rotation between the cylindrical body and the annular body is provided.

In one embodiment of the present invention, the attachment member includes a shaft portion extending in a direction perpendicular to the axial direction of the standing operation wire, a connecting portion extending in a direction perpendicular to the longitudinal axis of the shaft portion, A locking portion provided on the opposite side of the shaft portion is provided, and the movable member has a mounting hole into which the shaft portion is inserted, and a longitudinal axis of the shaft portion with the shaft portion being inserted into the mounting hole. It is preferable that a locking groove portion that locks the locking portion when the shaft portion is rotated is provided.

In one form of the present invention, the connecting portion includes a wire groove portion along the extending direction of the connecting portion, the wire groove portion accommodating the standing operation wire when the locking portion is locked to the locking groove portion. It is preferable to be provided.

In one embodiment of the present invention, the attachment member includes a pair of claw portions, a biasing member that biases the pair of claw portions in a direction to approach each other, and a pair of claw portions against the biasing force of the biasing member. It is preferable that a knob for moving in a direction away from each other is provided, and the movable member is provided with a pair of mounting holes in which the pair of claws are mounted by the biasing force of the biasing member.

In one embodiment of the present invention, a fixed shaft portion is provided in one of the movable member and the attachment member, and a fixed hole into which the fixed shaft portion is fitted is provided in the other, and the movable member and the attachment member It is preferable that either one is provided with a retaining hole, and the other is provided with a retaining part fitted to the retaining hole.

In one embodiment of the present invention, the mounting member includes a shaft portion extending in the axial direction of the standing operation wire, a small diameter portion formed at a central portion in the longitudinal axis direction of the shaft portion, and one end portion of the shaft portion. A first locking portion provided on the shaft and a second locking portion provided on the other end of the shaft portion, and the movable member includes a fixed groove for receiving the shaft portion, and a shaft in the fixed groove. A retaining portion that is in contact with the first locking portion and the second locking portion when the portion is received and restricts movement of the shaft portion in the longitudinal axis direction; It is preferable that a convex pressing portion that is brought into contact with the central portion of the shaft portion when the portion is accommodated is provided.

In one embodiment of the present invention, the retaining portion includes a pair of retaining pieces arranged with a gap along the longitudinal direction of the shaft portion, and a biasing member that biases the pair of retaining pieces in a direction approaching each other. The shaft portion is preferably accommodated in the fixing groove against the urging force of the urging member from the gap between the pair of retaining pieces.

According to the present invention, it is possible to provide an endoscope capable of improving the cleaning performance of the endoscope while easily performing the attaching / detaching operation of the proximal end of the wire with respect to the standing operation mechanism.

Configuration diagram of an endoscope system including an endoscope according to an embodiment Perspective view of the tip member where the stand is located in the lying position The perspective view of the front-end | tip member in which the stand is located in the standing position Enlarged perspective view of the stand Cross-sectional view of the main part showing the mounting structure of the stand for the tip member The perspective view which illustrated the other side surface which opposes one side surface of the operation part shown in FIG. Enlarged perspective view in which the engaging portion is accommodated in the accommodating portion via the engaging guide portion Operation explanatory view in which the engaging portion is guided to the engaging guiding portion and is accommodated in the accommodating portion. Configuration diagram showing the overall configuration of the standing operation mechanism Side view of the standing operation mechanism of FIG. An enlarged perspective view of the movable member attached to the operation unit as seen from one side. An enlarged perspective view of the movable member attached to the operation unit as seen from the other direction side Sectional view of the operation section along line 13-13 in FIG. Sectional drawing which showed the state before attaching a movable member to an operation part Sectional drawing which showed the state just before accommodating a sleeve in the recessed part of a 1st bearing part Sectional drawing which showed the state which accommodated the sleeve in the recessed part of a 1st bearing part Sectional drawing which showed the state which has arrange | positioned the spacer between the 2nd bearing part and the operation part The perspective view of the attachment structure of 1st Embodiment The perspective view which looked at the attachment structure shown in FIG. 18 from the left side Perspective view of wire assembly Front view of mounting member The perspective view of the extension part which showed the inlet and the movable member Explanatory drawing which has inserted the wire with the engaging member at the head from the inlet Explanatory drawing of the attachment member in the state where the tip of the wire is connected to the stand Explanatory drawing with mounting member connected to movable member Explanatory drawing which showed the modification of the attachment structure of 1st Embodiment Cross-sectional view of the main part of the mounting structure shown in FIG. The perspective view of the attachment structure of 2nd Embodiment Assembly perspective view of the mounting structure shown in FIG. Cross-sectional view of the main part of the mounting structure shown in FIG. The top view which showed the size of the engaging part to the engaging hole Assembly perspective view of mounting structure of third embodiment A plan view of the engagement hole showing the size of the engagement portion with respect to the engagement hole The perspective view of the attachment structure of 4th Embodiment Assembly perspective view of the mounting structure shown in FIG. The perspective view of the attachment structure of 5th Embodiment 36 is an assembled perspective view of the mounting structure shown in FIG. 36 is an assembled perspective view of the mounting structure shown in FIG. The perspective view of the attachment structure of 6th Embodiment Assembly perspective view of the mounting structure shown in FIG. The perspective view of the attachment structure of 7th Embodiment 41 is an assembled perspective view of the mounting structure shown in FIG. 41 is an assembled perspective view of the mounting structure shown in FIG. The perspective view of the attachment structure of 8th Embodiment 44 is an assembled perspective view of the mounting structure shown in FIG. Sectional drawing which showed the principal part structure of the attachment structure shown in FIG. An explanatory view showing a state in which the shaft portion is broken by the pressing portion.

Hereinafter, preferred embodiments of the endoscope according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a configuration 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, a processor device 14, a light source device 16, and a display 18. FIG. 1 also shows a treatment instrument 56 used in the endoscope system 12.

The endoscope 10 includes an operation unit 22 that includes an upright operation lever 20 that is an operation member, and an insertion unit 24 that is provided on the distal end side of the operation unit 22.

Further, as shown in the perspective views of FIGS. 2 and 3 showing the configuration of the distal end portion 26 of the insertion portion 24, the distal end portion 26 of the insertion portion 24 is provided with a distal end member 28. A base 30 is attached. FIG. 2 is a perspective view of the tip member 28 in which the upright stand 30 is located in the lying position, and FIG. 3 is a perspective view of the tip member 28 in which the stand 30 is located in the upright position.

In the following description, the Z (+) direction in FIGS. 1 to 3 is referred to as the upward direction, and the Z (−) direction is referred to as the downward direction. The X (+) direction is referred to as the right direction, and the X (−) direction is referred to as the left direction. Furthermore, the Y (+) direction is referred to as the distal end side direction, and the Y (−) direction is referred to as the proximal end side direction.

Returning to FIG. 1, the operation unit 22 is extended toward the distal end side from the operation unit main body 32 provided with the standing operation lever 20, the gripping part 34 connected to the operation part main body 32, and the gripping part 34. The proximal end portion of the insertion portion 24 is connected to the distal end side of the extended portion 36 via a bend preventing tube 38. Note that the grasping portion 34 is a portion that the operator grasps when operating the endoscope 10.

The extending portion 36 extends from the distal end portion of the gripping portion 34 toward the distal end side in order to provide the movable member 96 (see FIG. 6) connected to the standing operation mechanism 120 (FIGS. 9 and 10). This is a portion of the non-gripping region. Specifically, the region A from the distal end portion 44A of the convex mount portion 44 of the treatment instrument introduction port 42 provided in the grasping portion 34 to the proximal end portion 38A of the folding stop tube 38 corresponds to the extending portion 36. To do. An annular flange 40 is provided in the region A of the extended portion 36. The standing operation mechanism 120 and the movable member 96 will be described later.

A universal cord 46 is provided in the operation unit main body 32 of the operation unit 22. A light source connector 50 is provided on the distal end side of the universal cord 46, and the light source connector 50 is connected to the light source device 16. In addition, an electrical connector 48 is branched from the light source connector 50, and the electrical connector 48 is connected to the processor device 14.

The insertion portion 24 is configured by connecting a distal end portion 26, a bending portion 52, and a flexible portion 54 from the distal end side toward the proximal end side.

The following contents are provided inside the insertion portion 24. That is, an operation for changing the leading end portion 56A of the treatment instrument 56 shown in FIG. 1 to the distal end member 28 shown in FIG. A standing operation wire 60 (hereinafter referred to as a wire 60) for performing, a standing operation wire channel 62 (hereinafter referred to as a wire channel 62) for guiding the tip of the wire 60 to the tip member 28, and the light source device of FIG. A light guide (not shown) for guiding the illumination light supplied from 16 to the tip member 28 in FIG. 2, an air / water supply tube (not shown), an angle wire (not shown), a signal cable (not shown), etc. The contents are provided.

Referring back to FIG. 1, the operation unit 22 is configured in a substantially cylindrical shape as a whole, and has a cylindrical axis B along the Y (+)-Y (−) direction. A pair of angle knobs 64 and 64 for bending the bending portion 52 are disposed on the side surface 22A on one side with a vertical section including the cylindrical axis B of the operation portion 22 as a boundary. The pair of angle knobs 64, 64 are provided so as to be rotatable on the same axis.

The bending portion 52 has a structure in which a plurality of angle rings (not shown) are connected to each other so as to be rotatable. The bending portion 52 is configured by covering the outer periphery of the structure with a cylindrical net knitted with a metal wire and covering the outer peripheral surface of the net with a rubber cylindrical outer skin. For example, four angle wires (not shown) are arranged from the bending portion 52 configured as described above to the angle knobs 64 and 64. By rotating the angle knobs 64 and 64, these angle wires are connected to each other. The bending portion 52 is bent vertically and horizontally by pushing and pulling.

The soft part 54 has a spiral tube (not shown) formed by spirally winding a thin metal strip having elasticity. The flexible portion 54 is configured by covering the outer surface of the spiral tube with a cylindrical mesh knitted with a metal wire, and covering the outer peripheral surface of the mesh with a cylindrical outer skin made of resin.

The air / water supply button 66 and the suction button 68 are arranged in the operation unit main body 32 side by side. By operating the air / water supply button 66, air and water can be ejected from the air / water supply nozzle 70 provided in the tip member 28 of FIG. Further, by operating the suction button 68 of FIG. 1, it is possible to suck body fluid such as blood from the suction port that also serves as the treatment instrument outlet port 72 provided in the distal end member 28 of FIG.

Further, a treatment instrument introduction port 42 for introducing a treatment instrument 56 is provided in the grasping section 34 of the operation section 22 of FIG. The treatment instrument 56 introduced from the treatment instrument introduction port 42 with the distal end portion 56 A at the head is inserted into the treatment instrument channel 58 of FIG. 2 inserted through the insertion section 24, and the treatment instrument guide provided on the distal end member 28 is introduced. It is led out from the outlet 72.

1 is provided on one side surface 22A of the operation unit 22 in FIG. 1 so as to be rotatable coaxially with the angle knobs 64 and 64. The standing operation lever 20 is rotated by an operator's hand holding the holding part 34. When the standing operation lever 20 is rotated, the wire 60 shown in FIG. 2 is pushed and pulled by the standing operation mechanism 120 (see FIGS. 9 and 10) that operates in conjunction with the rotation operation of the standing operation lever 20. The posture of the stand 30 connected to the front end side of 60 is changed between the standing position of FIG. 3 and the lying position of FIG. The above-described standing operation mechanism 120 will be described later.

The endoscope 10 of the embodiment configured as described above is a side endoscope used as a duodenoscope, and the insertion portion 24 is inserted into the subject through the oral cavity. The insertion unit 24 is inserted from the esophagus through the stomach to the duodenum, and a predetermined examination or treatment is performed.

In the embodiment, a biopsy forceps having a cup capable of collecting a biological tissue at the distal end portion 56A is exemplified as the treatment instrument 56, but is not limited thereto. For example, a treatment instrument such as a contrast tube or a knife for EST (Endoscopic Sphincterotomy) is used as another treatment instrument.

Next, the tip portion 26 will be described.

As shown in FIG. 2, the distal end portion 26 includes a distal end member 28 and a cap member 76 that is detachably attached to the distal end member 28. The cap member 76 is configured in a substantially cylindrical shape whose front end is sealed, and a substantially rectangular opening window 76A is formed on a part of the outer peripheral surface thereof. When the cap member 76 is attached to the distal end member 28, the opening window 76 A of the cap member 76 is communicated with the treatment instrument outlet 72 of the distal end member 28. As a result, the distal end portion 56A of the treatment instrument 56 led out from the treatment instrument lead-out port 72 is led out from the opening window 76A.

The cap member 76 is made of an elastic material, for example, a rubber material such as fluorine rubber or silicon rubber, or a resin material such as polysulfone or polycarbonate, and is formed on the distal end member 28 on the base end side thereof. An engaging portion (not shown) that engages with a groove (not shown) is provided, and the engaging portion is attached to the tip member 28 by engaging with the groove of the tip member 28. Further, when the treatment of the endoscope 10 is completed, the cap member 76 is removed from the distal end member 28 and cleaned or disinfected, or is discarded as a disposable.

The tip member 28 is made of a metal material having corrosion resistance. The tip member 28 is integrally provided with a partition wall 78 projecting toward the tip side and a partition wall 80 facing the partition wall 78. Between the partition wall 78 and the partition wall 80, a stand support chamber 82 for storing the stand 30 is formed. A treatment instrument outlet 72 for leading the treatment instrument 56 to the outside is formed on the proximal end side of the upright storage chamber 82, and the distal end portion of the treatment instrument channel 58 is connected to the treatment instrument outlet 72.

The treatment instrument channel 58 is inserted into the insertion portion 24 of FIG. The proximal end portion of the treatment instrument channel 58 is connected to the distal end tube 202 of the branch tube 200 (see FIG. 10) provided inside the operation unit 22.

This branch pipe 200 has a well-known structure, and a base end portion is branched into two

pipe lines

204 and 206, and a treatment instrument introduction port 42 is formed at the base end of one pipe line 204. Therefore, the distal end portion 56A of the treatment instrument 56 introduced from the treatment instrument introduction port 42 into the treatment instrument channel 58 via the conduit 204 is inserted into the treatment instrument channel 58 and stands up from the treatment instrument outlet 72 of FIG. It is led out to the table accommodation room 82. The leading end portion 56 A of the treatment instrument 56 led out to the upright stand accommodating chamber 82 is changed in the lead-out direction according to the posture between the standing position and the lying down position of the stand 30 arranged in the upright stand accommodating chamber 82. Is done. Further, the distal end of a suction pipe 208 that sucks body fluid such as blood is connected to the proximal end of the other pipe line 206 of the branch pipe 200 shown in FIG.

FIG. 4 is an enlarged perspective view of the stand 30. As shown in FIG. 4, a guide surface 30 A is provided on the upper surface of the stand 30. Along the guide surface 30A, the distal end portion 56A of the treatment instrument 56 of FIG. 1 is led out from the opening window 76A of the cap member 76 of FIG.

As shown in FIG. 4, the stand 30 is provided with

rotating shaft portions

84 and 86 on both side surfaces of the base portion 30 B. The axial directions of the

rotary shaft portions

84 and 86 are set in the X (+) − X (−) direction of FIG. 2 when the upright base 30 is attached to the tip member 28.

FIG. 5 is a cross-sectional view of the main part showing the mounting structure of the stand 30 with respect to the tip member 28. As shown in FIG. 5, the shafts of the

pivot shafts

84 and 86 are coaxially arranged via the base 30 B of the upright 30, and the pivot shaft 84 can pivot on the concave bearing portion 78 A of the partition wall 78. The rotation shaft portion 86 is fitted to the concave bearing portion 80A of the partition wall 80 so as to be rotatable. Further, the

rotation shaft portions

84 and 86 are attached to the bearing

portions

78A and 80A with a predetermined backlash amount x in the axial direction of the

rotation shaft portions

84 and 86, respectively. When the

pivot shafts

84 and 86 are shifted to one side by using this play amount x, a part of one of the

bearings

78A and 80A is exposed, and a brush can be easily applied to the exposed part. Therefore, the washability of the bearing

portions

78A and 80A is improved.

As shown in FIGS. 2 and 3, an optical system accommodation chamber 88 is provided inside the partition wall 78. An illumination window 90 and an observation window 92 are disposed adjacent to each other above the optical system accommodation chamber 88, and an air / water supply nozzle 70 directed toward the observation window 92 is provided on the tip member 28. The air / water supply nozzle 70 is connected to an air / water supply device (not shown) via an air / water supply tube (not shown) inserted through the insertion portion 24, and the air / water supply button 66 of the operation portion 22 shown in FIG. Is operated, air or water is jetted from the air / water feeding nozzle 70 toward the observation window 92. Thereby, the observation window 92 is cleaned.

Also, an illumination unit (not shown) and a photographing unit (not shown) are accommodated in the optical system accommodation chamber 88. The illumination unit includes an illumination lens (not shown) installed inside the illumination window 90, and a light guide (not shown) arranged so that the front end face the illumination lens. The light guide is disposed on the universal cord 46 from the insertion portion 24 of the endoscope 10 via the operation portion 22, and the base end thereof is connected to the light source device 16 via the light source connector 50. Thereby, the irradiation light from the light source device 16 is transmitted through the light guide and is irradiated to the outside from the illumination window 90.

The above-described imaging unit includes an imaging optical system (not shown) disposed inside the observation window 92 and a CMOS (complementary metal oxide semiconductor) type or CCD (charge coupled device) type imaging device (not shown). ing. The imaging device is connected to the processor device 14 via a signal cable (not shown) inserted through the insertion unit 24 in FIG. The imaging signal of the subject image obtained by the photographing unit is output to the processor device 14 via the signal cable and subjected to image processing, and then displayed on the display 18 as the subject image.

Although overlapping with the above description, first, the wire 60 will be described. As shown in FIGS. 2 and 3, the wire 60 is connected to the stand 30 with the tip of the wire 60 being disposed outside the outlet 74. Further, the proximal end of the wire 60 is disposed outside the introduction port 94 provided in the operation unit 22 as shown in FIG.

6 is a perspective view of the operation unit 22, and is a perspective view illustrating the other side surface 22B of the operation unit 22 shown in FIG. 1 opposite to the one side surface 22A.

According to FIG. 6, the introduction port 94 is provided in the extending part 36 of the operation part 22. An attachment member 98 is provided at the proximal end of the wire 60 disposed outside the introduction port 94, and this attachment member 98 is detachably attached to an engagement hole (described later) of the movable member 96. .

A movable member 96 is provided in the operation unit 22. The movable member 96 is disposed so as to be exposed to the outside of the operation unit 22 and operates in conjunction with the operation of the standing operation lever 20 by the standing operation mechanism 120 (see FIGS. 9 and 10). In the embodiment, the movable member 96 is rotatably disposed on the other side surface 22B opposite to the one side surface 22A on which the angle knobs 64, 64 are provided. The arrangement position is not limited, and it is sufficient that the operation unit 22 is rotatably arranged at a predetermined position. The movable member 96 is a driven lever that rotates in conjunction with the rotation operation of the standing operation lever 20.

The standing operation mechanism 120 is a mechanism that is disposed inside the operation unit 22 and operates the movable member 96 in conjunction with the operation of the standing operation lever 20. Therefore, when the standing operation lever 20 is operated, the movable member 96 operates through the standing operation mechanism 120, and the wire 60 (see FIG. 2) connected to the movable member 96 is pushed and pulled.

Next, a connection structure for connecting the tip of the wire 60 to the stand 30 so as to be detachable will be described.

2 and 3, the wire 60 is provided with an engaging member 100 at the tip. Further, the stand 30 is provided with a receiving groove 102 that is detachably engaged with the engaging member 100 and has an opening 104 formed on the X (+) direction side. Thus, the engagement member 100 provided at the distal end of the wire 60 is accommodated in the accommodation groove 102 through the opening 104, so that the distal end of the wire 60 is coupled to the upright 30.

In the embodiment, the engagement member 100 is a sphere, and the accommodation groove 102 is a spherical recess that accommodates the sphere engagement member 100. Although the shapes of the engaging member 100 and the receiving groove 102 are not limited to the above shapes, the wire 60 can be pushed and pulled by making the engaging member 100 a sphere and the receiving groove 102 a spherical recess. The sliding resistance between the engaging member 100 and the accommodation groove 102 generated by the operation can be reduced. Therefore, the push / pull operation of the wire 60 can be performed smoothly.

Further, the distal end member 28 is provided with an engaging guiding portion 106 that is connected to the receiving groove 102 in the standing position of FIG. The engagement guide portion 106 has a function of guiding the engagement member 100 led out from the lead-out port 74 to the opening 104 of the housing groove 102. The lead-out port 74 is provided in the distal end member 28 and communicates with the introduction port 94 (see FIG. 6) via a wire channel 62 provided in the insertion portion 24.

According to the endoscope 10 having such an engagement guiding portion 106, when the wire 60 is introduced from the introduction port 94 and the engagement member 100 is introduced to the head, the engagement member 100 is connected to the wire channel 62 (FIG. 2). And is led out from the outlet 74 to the outside. Then, the engaging member 100 is guided toward the opening 104 of the receiving groove 102 of the stand 30 by the engaging guiding portion 106 by the continuous introduction operation of the wire 60, and is engaged with the receiving groove 102 from the opening 104. Is done. Thereby, according to the endoscope 10 of the embodiment, the engaging member 100 of the wire 60 can be engaged with the receiving groove 102 of the stand 30 only by the introduction operation of the wire 60.

FIG. 7 is an enlarged perspective view in which the engaging member 100 is engaged with the receiving groove 102 via the engaging guiding portion 106. FIG. 8 is an explanatory view continuously showing the operation until the engaging member 100 is guided by the engaging guiding portion 106 and engaged with the receiving groove 102.

As shown in FIGS. 7 and 8, the engaging guiding portion 106 includes an engaging guiding path 108 that guides the engaging member 100 led out from the outlet 74 to the opening 104 of the housing groove 102, and an inside of the engaging guiding path 108. And a deformation generating portion 110 connected to the opening 104 of the receiving groove 102. The deformation generation unit 110 contacts the engagement member 100 that advances in the Y (+) direction toward the opening 104 in the engagement guide path 108, and guides the engagement member 100 in the Y (+) direction X ( Guide in the + direction.

Thereby, the tip of the wire 60 is elastically deformed in a direction (X (+) direction) gradually moving away from the opening 104 as the engaging member 100 approaches the opening 104 along the engaging guide path 108. When the engagement member 100 traveling in the engagement guide path 108 passes through the deformation generating portion 110, it moves in the X (−) direction by the restoring force of the wire 60 and is engaged with the receiving groove 102 from the opening 104. The

The engaging guide path 108 is formed by cutting out a part of the peripheral surface 28A of the tip member 28 into a concave shape, and gradually inclines in the X (+) direction from the outlet 74 toward the Y (+) direction. Surface. A deformation generating part 110 is formed on the distal end side of the engaging guide path 108.

Further, the engaging guide portion 106 is formed with a groove 112 that allows the distal end side of the wire 60 to be immersed and escaped when the engaging member 100 is engaged with the receiving groove 102. In addition, a groove 114 is formed on the proximal end side of the receiving groove 102 of the stand 30 so that when the engaging member 100 is engaged with the receiving groove 102, the distal end side of the wire 60 is immersed and released. The width dimension of the groove 112 in the direction orthogonal to the paper surface of FIG. 8 is larger than the diameter of the wire 60, and the engagement member 100 so that the engagement member 100 passing through the deformation generating portion 110 does not enter the groove 112. Smaller than the diameter. Further, the width dimension of the groove 114 in the direction orthogonal to the paper surface of FIG. 8 is larger than the diameter of the wire 60 and the engaging member 100 engaged with the receiving groove 102 does not come out in the Y (−) direction. The diameter of the engaging member 100 is smaller.

The engaging guide portion 106 is a form suitable for engaging the engaging member 100 with the receiving groove 102 in a state where the stand 30 is positioned at the standing position. That is, as shown in FIG. 7, the housing groove 102 is disposed at a position facing the outlet port 74 in a state where the stand 30 is located at the standing position. Therefore, by moving the engagement member 100 straight from the outlet 74, the engagement member 100 can be engaged with the receiving groove 102 of the stand 30 positioned at the standing position via the engagement guide portion 106.

Next, a detachment structure for detaching the engagement member 100 of the wire 60 engaged with the accommodation groove 102 of the stand 30 from the accommodation groove 102 will be described.

The tip member 28 is provided with a detaching guide surface 116, and the detaching guide surface 116 is provided on the upper surface of the partition wall 80 (see FIG. 2). The separation guide surface 116 is a guide surface (see FIGS. 2 and 3) inclined in the Z (−) direction toward the X (+) direction. In addition, when the wire 60 is pushed further in a state where the engaging member 100 is engaged with the receiving groove 102 and the upright 30 is located at the lying down position, the separation guide surface 116 is removed from the inside of the receiving groove 102. It functions as a surface for guiding the wire 60 in the direction in which the engaging member 100 is detached from the opening 104.

According to the detachment structure configured as described above, the attachment member (described later) provided at the proximal end of the wire 60 is removed from the engagement hole (described later) of the movable member 96, and then the introduction port of the extending portion 36 is removed. The wire 60 is pushed in from 94, and the stand 30 is positioned from the standing position in FIG. 3 to the lying position in FIG. Thereafter, when the wire 60 is further pushed in, the wire 60 is guided in the X (+) direction by which the engaging member 100 is detached from the inside of the accommodation groove 102 to the outside of the opening 104 by the guide surface 116 for removal of the tip member 28. The As a result, the engaging member 100 is easily detached from the housing groove 102 to the outside of the opening 104 by the restoring force of the wire 60.

Next, the standing operation mechanism 120 will be described.

FIG. 9 is a configuration diagram showing the overall configuration of the standing operation mechanism 120. FIG. 10 is a side view of the standing operation mechanism 120 of FIG. 9 and 10, the exterior case (not shown) of the operation unit 22 is omitted, and the standing operation mechanism 120 disposed inside the operation unit 22 is illustrated.

As shown in FIGS. 9 and 10, the standing operation mechanism 120 functions as a power transmission mechanism that connects the standing operation lever 20 and the movable member 96 and transmits the rotation operation of the standing operation lever 20 to the movable member 96.

The standing operation mechanism 120 includes a first conversion mechanism 124 that converts the rotational motion of the standing operation lever 20 into a linear motion, a wire 126 that is linearly moved by the first conversion mechanism 124, and a linear motion of the wire 126 that is converted into a rotational motion. And a second conversion mechanism 128 that rotates the movable member 96.

The first conversion mechanism 124 includes a crank member 130 having a base end connected to the standing operation lever 20, a first slider 132 having a base end connected to the tip of the crank member 130, and a base end to the tip of the first slider 132. Are connected to each other.

In the wire 126, the proximal end of the wire 126 is connected to the distal end of the second slider 134, and the distal end of the wire 126 is connected to the second conversion mechanism 128.

According to the first conversion mechanism 124 configured as described above, when the standing operation lever 20 is rotated, the crank member 130, the first slider 132, and the second slider 134 are moved along the cylindrical axis B in conjunction therewith. Move linearly. Thereby, the wire 126 moves linearly along the cylindrical axis B, and the linear motion is transmitted to the second conversion mechanism 128.

The second conversion mechanism 128 includes a lever 136, a first gear 138, a second gear 140, a third gear 142, and a fourth gear 144, and a reduction mechanism is configured by these gears.

The lever 136 is rotatably supported by the bracket 146 via a shaft portion 148, and the tip end of the wire 126 is connected. Therefore, the lever 136 is rotated around the shaft portion 148 by the linear motion of the wire 126.

The first gear 138 is provided integrally with the lever 136 and is rotated about the shaft portion 148. The second gear 140 meshes with the first gear 138 and is rotatably supported by the bracket 146 via the shaft portion 150. The third gear 142 is provided integrally with the second gear 140 and is provided coaxially with the second gear 140.

The fourth gear 144 is meshed with the third gear 142. In addition, a rotation shaft 152 (see FIG. 13) is fixed to the fourth gear 144 coaxially with the fourth gear 144. A proximal end side of the rotation shaft 152 is rotatably supported by the bracket 146, and a distal end side of the rotation shaft 152 is disposed outside the operation unit 22. The rotating shaft 152 is provided coaxially with the disk-shaped rotating body 154, and the rotating body 154 is connected to the rotating shaft 152 and rotated together with the rotating shaft 152. The rotating body 154 is rotatably supported by the opening 23 of the operation unit 22 via the O-ring 166. The opening 23 is sealed by the O-ring 166, and the water tightness of the operation unit 22 is ensured.

A sleeve 156 is formed on the side surface of the rotating body 154. The sleeve 156 is provided coaxially with the rotating body 154, and the first bearing portion 162 of the movable member 96 is connected to the outer peripheral surface of the sleeve 156 via an O-ring 158.

In the embodiment, the above-described sleeve 156 corresponds to the first shaft portion of the present invention that rotatably supports the movable member 96 on the operation portion 22, and the O-ring 158 corresponds to the seal member of the present invention. To do. A connection structure between the first bearing portion 162 and the sleeve 156 will be described later.

According to the second conversion mechanism 128 (see FIGS. 9 and 10) configured as described above, when the linear motion of the wire 126 is transmitted to the lever 136, the first gear 138 is rotated together with the lever 136, The rotation operation of the first gear 138 is transmitted to the fourth gear 144 via the second gear 140 and the third gear 142, and the fourth gear 144 is rotated. When the fourth gear 144 is rotated, the rotating body 154 is rotated together with the rotating shaft 152 (see FIG. 13). As a result, the movable member 96 connected to the sleeve 156 of the rotating body 154 via the O-ring 158 is rotated about the axis of the sleeve 155.

Further, according to the standing operation mechanism 120 (see FIGS. 9 and 10), the rotation operation of the standing operation lever 20 is decelerated and transmitted to the movable member 96 by the second conversion mechanism 128 including the deceleration mechanism. That is, the rotation angle of the first bearing portion 162 of the movable member 96 is smaller than the rotation angle of the lever 136 that is operated by operating the standing operation lever 20. Thereby, the force required to operate the standing operation lever 20 can be further reduced, and the raising and lowering posture control of the standing table 30 by the standing operation lever 20 is facilitated.

In the embodiment, the wire 126 is used as a component constituting the standing operation mechanism 120. The use of the wire 126 has the following advantages. That is, when the linear motion of the second slider 134 is converted into the rotational motion of the lever 136, the wire 126 can move in a curvilinear manner (slack), so that it is not necessary to install a link mechanism, and space constraints are reduced. In addition, when the second slider 134 and the lever 136 are connected by a link mechanism, a force escape field is reduced in the standing operation mechanism 120. However, by using the wire 126, the wire 126 is loosened, thereby releasing the force. Therefore, the load applied to the standing operation mechanism 120 can be reduced.

Next, an attachment structure for attaching the movable member 96 to the operation unit 22 will be described with reference to the drawings.

FIG. 11 is an enlarged perspective view of the movable member 96 attached to the operation unit 22 as viewed from one direction side, and is a perspective view specifically showing the first bearing portion 162 provided on one end side of the movable member 96. It is. FIG. 12 is an enlarged perspective view of the movable member 96 attached to the operation unit 22 as seen from the other direction side, and particularly shows the second bearing portion 164 provided on the other end side of the movable member 96. FIG. 13 is a cross-sectional view of the operation unit 22 taken along line 13-13 in FIG.

As shown in FIGS. 11 to 13, the movable member 96 is provided on the plate-shaped beam portion 160, the first bearing portion 162 provided on one end side of the beam portion 160, and the other end side of the beam portion 160. The second bearing portion 164 is provided and is configured in a U shape as a whole.

Here, the connection structure between the first bearing portion 162 and the sleeve 156 described above will be described.

As shown in FIG. 13, the first bearing portion 162 is formed with a bottomed concave portion 163 on the inner side surface 162 A facing the operation portion 22. The recess 163 has an opening on the side facing the operation unit 22, and the sleeve 156 is accommodated in the recess 163 through the opening. Thereby, the sleeve 156 is covered with the first bearing portion 162 without being exposed to the outside. The O-ring 158 described above is disposed between the outer peripheral surface of the sleeve 156 and the inner peripheral surface of the recess 163. Thereby, the water tightness of the internal space of the recessed part 163 in which the sleeve 156 is arrange | positioned is ensured.

For the connection structure of such an embodiment, for example, a through hole is formed in the first bearing portion 162, and the rotation shaft 152 and the first bearing portion 162 are connected to the through hole through the rotation shaft 152. In the case of a connection structure that is connected by a screw (not shown), the inner peripheral surface of the through hole and the screw are exposed to the outside. For this reason, it takes time to clean the inner peripheral surface of the through hole and the screw.

On the other hand, since the connecting structure of the embodiment is a structure in which the rotating shaft 152, the sleeve 156, and the concave portion 163 are not exposed to the outside, the cleaning performance of the first bearing portion 162 can be improved.

Therefore, according to the connection structure of the embodiment, the cleaning performance of the endoscope 10 can be improved as compared with the conventional endoscope. Note that the outer surface 162B of the first bearing portion 162 is preferably a smooth surface in order to improve the cleanability.

Next, a connection structure between the second bearing portion 164 and the operation portion 22 will be described.

The second bearing portion 164 has a through hole 165 from the inner surface 164A facing the operation portion 22 toward the outer surface 164B opposite to the inner surface 164A. A driven shaft 168 configured as a screw is inserted into the through hole 165, and the driven shaft 168 is fastened and fixed to a screw hole 21 formed in the operation unit 22. As a result, the second bearing portion 164 is pivotally supported on the operation portion 22 via the driven shaft 168.

In the second bearing portion 164, a cap member 167 made of an elastic member such as rubber is attached to the opening on the outer surface 164 B side of the through hole 165, and the through hole 165 is closed by the cap member 167. . Even in such a connection structure, since the through-hole 165 and the driven shaft 168 are not exposed to the outside, the cleaning performance of the endoscope 10 is improved.

In the embodiment, the driven shaft 168 corresponds to the second shaft portion of the present invention, and the cap member 167 corresponds to the closing member of the present invention. Also, a cylindrical spacer 169 is inserted between the second bearing portion 164 and the operation portion 22, and the driven shaft 168 is inserted into the spacer 169 and fixed to the operation portion 22. The shaft cores of the sleeve 156 on the first bearing portion 162 side and the driven shaft 168 on the second bearing portion 164 side are set coaxially.

Next, an attachment procedure for attaching the movable member 96 to the operation unit 22 will be described with reference to FIGS.

FIG. 14 is a cross-sectional view of the operation unit 22 showing a state immediately before the movable member 96 is attached to the operation unit 22. FIG. 14 shows that an O-ring 158 is attached to the outer peripheral surface of the sleeve 156.

FIG. 15 is a cross-sectional view of the operation portion 22 showing a state immediately before the sleeve 156 is accommodated in the concave portion 163 of the first bearing portion 162 of the movable member 96. FIG. 15 shows that the inner side surface 164A of the second bearing portion 164 is brought into contact with the operation portion 22, and the opening of the concave portion 163 faces the sleeve 156 at that position. That is, it is shown that the inner side surface 164A of the second bearing portion 164 functions as a positioning surface for accommodating the sleeve 156 in the recess 163.

FIG. 16 is a cross-sectional view of the operation portion 22 showing a state in which the sleeve 156 is accommodated in the concave portion 163 of the first bearing portion 162. That is, the sleeve 156 can be accommodated in the recess 163 only by pushing the first bearing portion 162 shown in FIG. 15 toward the sleeve 156. This completes the attachment work for attaching the first bearing portion 162 to the operation portion 22 side. In the state of FIG. 16, the water tightness of the recess 163 is ensured by the O-ring 158. Further, the inner surface 164 A of the second bearing portion 164 is separated from the operation portion 22 because the first bearing portion 162 is pushed toward the sleeve 156.

FIG. 17 is a cross-sectional view of the operation portion 22 showing a state in which the spacer 169 is disposed in the gap between the inner surface 164A of the second bearing portion 164 and the operation portion 22.

17, after the spacer 169 is disposed, the driven shaft 168 is inserted into the through hole 165 of the second bearing portion 164 as shown in FIG. Thereafter, the driven shaft 168 is fastened to the screw hole 21 of the operation unit 22, and then the through hole 165 is closed by the cap member 167. Thus, the attaching operation for attaching the second bearing portion 164 to the operation portion 22 is completed, and the attaching operation for attaching the movable member 96 to the operation portion 22 is completed.

Although overlapping with the previous description, the movable member 96 attached to the operation unit 22 does not have a through hole for inserting a screw in the first bearing unit 162, and the second bearing unit 164 Has a through hole 165 for inserting the driven shaft 168, and the through hole 165 is sealed by a cap member 167. For this reason, the cleaning property of the movable member 96 is improved, and as a result, the cleaning property of the endoscope 10 is improved.

Next, a mounting structure for mounting the proximal end of the wire 60 to the movable member 96 in the endoscope 10 with improved cleaning performance will be described by exemplifying a plurality of embodiments shown below.

18 to 22 show the mounting structure 170 of the first embodiment.

FIG. 18 is a perspective view of the mounting structure 170 viewed from the other side surface 22B of the operation unit 22. FIG. 19 is a perspective view of the mounting structure 170 shown in FIG. 18 as viewed from the left side. FIG. 20 is a perspective view of a wire assembly 172 including a wire 60 and an attachment member 98 provided at the proximal end of the wire 60. FIG. 21 is a front view of the mounting member 98, and FIG. 22 is a perspective view of the extending portion 36 having the introduction port 94 and the movable member 96.

As shown in FIG. 22, the movable member 96 is provided with an engagement hole 174 into which the attachment member 98 (see FIG. 21) is detachably engaged. The engagement hole 174 is formed along the longitudinal direction of the beam portion 160 of the movable member 96, and is configured by a through hole that penetrates the front and back surfaces of the beam portion 160. A pair of engagement portions 176 and 176 (see FIG. 21) of the attachment member 98 are detachably engaged with the engagement holes 174.

The attachment member 98 shown in FIG. 21 is a substantially triangular plate-like body, and a hole 180 where the proximal end of the wire 60 is connected to the core 178 at the center is formed. The pair of engaging

portions

176 and 176 of the attachment member 98 are provided on both sides of the core portion 178 via slit-shaped notches 182. The pair of engaging

portions

176 and 176 are formed with elastic deformation portions 184 that are elastically deformed and engaged with the engagement holes 174, respectively. The

elastic deformation portions

184 and 184 are respectively formed with claw portions 186 that are engaged with the edge portions 175 and 175 (see FIG. 22) on both sides of the engagement hole 174 in the longitudinal direction. When the engagement holes 174 and the

engagement portions

176 and 176 are engaged or disengaged, the

claw portions

186 and 186 are displaced in a direction approaching each other due to elastic deformation of the

elastic deformation portions

184 and 184.

Next, an attachment procedure for attaching the proximal end of the wire 60 to the movable member 96 using the attachment structure 170 of the first embodiment will be described.

First, before attaching the proximal end of the wire 60 to the movable member 96, the work of connecting the distal end of the wire 60 to the stand 30 is performed.

FIG. 23 shows a diagram in which the wire 60 is inserted from the introduction port 94 with the engaging member 100 (see FIG. 20) at the head.

That is, when the wire 60 and the engaging member 100 are introduced from the introduction port 94 in the state where the stand 30 is positioned at the standing position (see FIG. 3), as shown in FIG. Is led out from the outlet 74 through the wire channel 62 (see FIG. 2). Then, the engaging member 100 is guided toward the opening 104 of the receiving groove 102 of the stand 30 by the engaging guiding portion 106 of FIG. Is engaged. By this work, the tip of the wire 60 can be connected to the upright 30.

FIG. 24 shows the posture of the attachment member 98 in a state where the tip of the wire 60 is connected to the upright 30. In this posture, the

taper portions

187 and 187 of the lower portions of the claw portions 186 and 186 (see FIG. 21) are brought into contact with the edge portions 175 and 175 (see FIG. 23) on both sides of the engagement hole 174 to engage the attachment member 98. Push into the hole 174. By this pushing operation, the interval between the

claw portions

186 and 186 is narrowed, and the

claw portions

186 and 186 are locked to the

edge portions

175 and 175 on both sides of the engagement hole 174. Thus, the attachment member 98 is connected to the movable member 96 as shown in the connection diagram of FIG.

Therefore, according to the attachment structure 170 of the first embodiment, the base end of the wire 60 can be touched to the movable member 96 only by pushing the

claws

186 and 186 of the attachment member 98 into the engagement holes 174 of the movable member 96. Can be attached.

Thereafter, when the standing operation lever 20 in FIG. 1 is operated, the movable member 96 is moved in the arrow C direction or the arrow D direction as shown in FIG. Then, in conjunction with the operation of the movable member 96, the wire 60 is pushed and pulled by the movable member 96 via the attachment member 98. Thereby, the stand 30 is rotated between the standing position and the lying position.

Incidentally, the endoscope 10 is used for various examinations or treatments. Thereafter, when the endoscope 10 is cleaned, the following operation is performed.

First, the cap member 76 shown in FIG. Next, the engaging

portions

176 and 176 of the mounting member 98 are picked with fingers, the interval between the

claw portions

186 and 186 is narrowed to be smaller than the longitudinal dimension of the engaging hole 174, and then the engaging hole The

claw portions

186 and 186 are pulled out from 174.

Therefore, according to the mounting structure 170 of the first embodiment, the base end of the wire 60 can be detached from the movable member 96 only by pulling out the

claw portions

186 and 186 from the engagement holes 174.

Next, the wire 60 is pushed in from the introduction port 94 of the extending portion 36, so that the stand 30 is positioned from the standing position in FIG. 3 to the lying position in FIG. Thereafter, the wire 60 is further pushed in so that the engaging member 100 is detached from the housing groove 102 to the outside of the opening 104. With this operation, the tip of the wire 60 can be removed from the upright 30. Next, the wire 60 is pulled out from the introduction port 94 to empty the wire channel 62. Thereafter, the tip member 28, the upright stand 30, and the wire channel 62 are cleaned.

As described above, according to the attachment structure 170 of the first embodiment, the operation of the wire 60 can be performed only by pushing the

claws

186 and 186 of the attachment member 98 into the engagement holes 174 of the movable member 96 outside the operation portion 22. The proximal end can be attached to the movable member 96. In addition, the base end of the wire 60 can be removed from the movable member 96 only by pulling the

engagement portions

176 and 176 of the attachment member 98 from the engagement hole 174 of the movable member 96 outside the operation portion 22.

Therefore, according to the mounting structure 170 of the first embodiment, the detachment operation of the proximal end of the wire 60 with respect to the standing operation mechanism 120 (see FIGS. 9 and 10) can be easily performed as compared with the conventional endoscope. Can do.

Further, as shown in FIG. 13, the endoscope 10 of the embodiment has improved cleaning properties of the endoscope 10 due to the mounting structure of the movable member 96 to the operation unit 22.

As described above, according to the endoscope 10 of the embodiment having the mounting structure 170 of the first embodiment, the cleaning performance of the endoscope 10 can be easily performed while the proximal end of the wire 60 is easily attached to and detached from the standing operation mechanism 120. Can be improved.

In the attachment structure 170 of the first embodiment, the engagement hole 174 is formed in the movable member 96 and the engagement portion 176 is formed in the attachment member 98. However, the engagement portion 176 is formed in the movable member 96 and attached. An engagement hole 174 may be formed in the member 98. That is, an engagement hole 174 may be provided in one of the movable member 96 and the attachment member 98, and an engagement portion 176 that is detachably engaged with the engagement hole 174 may be provided on the other. Furthermore, the claw portion 186 may be provided not on the longitudinal direction side of the beam portion 160 of the movable member 96 but on the lateral direction side. Furthermore, the engagement holes 174 may be two engagement holes formed to be separated from each other in the longitudinal direction of the beam portion 160. The engagement hole 174 may be a concave non-through hole that does not penetrate the front and back surfaces of the beam portion 160.

In the above example, the wire 60 is pulled out from the introduction port 94 in order to empty the wire channel 62. However, the present invention is not limited to this. For example, prior to pulling out the wire 60 from the wire channel 62, the wire 60 can be pulled out from the outlet 74 by removing the proximal end of the wire 60 from the attachment member 98.

FIG. 26 is a perspective view showing a mounting structure 170A, which is a modification of the mounting structure 170 shown in FIGS.

In the description of the mounting structure 170A shown in FIG. 26, the same or similar members as those of the mounting structure 170 shown in FIGS. The same applies to the mounting structures of other embodiments described below.

The engagement hole 174A formed in the movable member 96 is a circular through hole. Further, the engaging portion 176A of the mounting member 98A has a cylindrical portion 177 inserted into the engaging hole 174A. The elastically deforming portion of the attachment member 98A is configured by a slit portion 184A provided at the tip of the cylindrical portion 177, and a claw portion 186A is formed on the outer peripheral surface of the slit portion 184A.

According to the mounting structure 170A configured as described above, when the slit portion 184A of the cylindrical portion 177 is inserted into the engagement hole 174A, the slit portion 184A is reduced in diameter by elastic deformation. Thereby, when the slit part 184A passes through the engagement hole 174A and the slit part 184A passes through the engagement hole 174A, the slit part 184A returns to the original diameter. Accordingly, as shown in the sectional view of the mounting structure 170A shown in FIG. 27, the claw portion 186A of the slit portion 184A engages with the back surface 160A of the beam portion 160 of the movable member 96, so that the mounting member 98A is attached to the movable member 96. Connected.

Therefore, according to the attachment structure 170A, the base end of the wire 60 can be attached to the movable member 96 only by inserting the engagement portion 176A into the engagement hole 174A. In addition, the base end of the wire 60 is removed from the movable member 96 only by pulling the slit portion 184A from the engagement hole 174A after pinching the slit portion 184A with a finger to reduce the diameter of the slit portion 184A. Can do.

Therefore, according to the mounting structure 170A, the base end of the wire 60 can be easily attached to and detached from the standing operation mechanism 120 (see FIGS. 9 and 10), similarly to the mounting structure 170 of the first embodiment.

As described above, according to the endoscope 10 of the embodiment having the mounting structure 170A, it is possible to improve the cleanability of the endoscope 10 while easily performing the attaching / detaching operation of the proximal end of the wire 60 with respect to the standing operation mechanism 120. it can.

Next, the mounting structure 210 of the second embodiment will be described with reference to FIGS.

28 is a perspective view of the mounting structure 210, FIG. 29 is an assembled perspective view of the mounting structure 210, and FIG. 30 is a cross-sectional view of the main part of the mounting structure 210.

The mounting structure 210 includes a movable member 96 and a mounting member 212.

29, the beam portion 160 of the movable member 96 is provided with an engagement hole 214, and the attachment member 212 is provided with an engagement portion 216 that is detachably engaged with the engagement hole 214. The attachment member 212 includes a knob portion 218 and a shaft portion 220 that constitutes the engaging portion 216, and a proximal end of the wire 60 is coupled to a hole portion 222 formed in the shaft portion 220.

Here, the shape of the engagement hole 214 will be described. FIG. 31 is a plan view of the engagement hole 214, in which the shape of the enlarged diameter portion 228 (see FIG. 29) of the engagement portion 216 is superimposed on the shape of the engagement hole 214.

The engagement hole 214 has a narrow part 224 having a diameter a and a wide part 226 having a diameter b larger than the diameter a. In the embodiment, the first width of the present invention is described by a diameter a, and the second width of the present invention is indicated by a diameter b. As shown in FIG. 31, a line CL connecting the center of the narrow portion 224 and the center of the wide portion 226 is a curve along an arc centered on the introduction port 94 (not shown). The arrangement of the narrow portion 224 and the wide portion 226 facilitates an operation when the attachment member 212 is engaged with the engagement hole 214. This will be described later.

29 has a shaft part 220 having an outer diameter c equal to or smaller than the diameter a in FIG. 31 and a diameter-enlarged part 228 provided at the tip of the shaft part 220. The engagement part 216 of the mounting member 212 shown in FIG. By reducing the difference between the diameter a and the outer diameter c, the shaft portion 220 can be stably held by the narrow portion 224. The enlarged diameter portion 228 has an outer diameter d that is larger than the diameter a and smaller than the diameter b. The enlarged diameter portion 228 functions as a retaining member that restricts the shaft portion 220 from separating from the narrow portion 224 in the axial direction of the shaft portion 220.

The engagement hole 214 has a frictional resistance portion 230 between the narrow portion 224 and the wide portion 226. The frictional resistance portion 230 is provided at the opening entrance portion of the narrow portion 224 and is formed so as to protrude from the opposing wall surfaces of the engagement hole 214. The frictional resistance part 230 functions as a restricting member that restricts the shaft part 220 inserted into the narrow part 224 from inadvertently sliding from the narrow part 224 to the wide part 226.

According to the mounting structure 210 configured as described above, first, the engaging portion 216 is inserted into the wide portion 226. Next, the attachment member 212 slides from the wide part 226 toward the narrow part 224. At this time, as shown in FIG. 28, since the attachment member 212 is fixed to the wire 60, the attachment member 212 moves along a curve CL centering on the introduction port 94. As described above, since the centers of the narrow portion 224 and the wide portion 226 are on the curve CL, the attachment member 212 slides smoothly from the wide portion 226 toward the narrow portion 224. Further, when the engaging portion 216 is slid from the wide portion 226 toward the narrow portion 224, the shaft portion 220 comes into contact with the frictional resistance portion 230, but the engaging portion 216 is made to have a width by the force of sliding the engaging portion 216. The narrow portion 224 can be engaged without any problem. As a result, the attachment member 212 is coupled to the movable member 96.

Therefore, according to the attachment structure 210 of the second embodiment, the base end of the wire 60 can be attached to the movable member 96 only by engaging the engaging portion 216 with the narrow portion 224.

Further, in a state in which the engaging portion 216 is engaged with the narrow portion 224, the diameter expanding portion 228 can prevent the shaft portion 220 from being detached from the narrow portion 224 in the axial direction of the shaft portion 220. . Further, the shaft portion 220 abuts against the frictional resistance portion 230, so that the engagement portion 216 can be prevented from sliding from the narrow portion 224 toward the wide portion 226. Thereby, the attachment member 212 can be reliably connected to the movable member 96.

On the other hand, when the proximal end of the wire 60 is removed from the movable member 96 at the time of cleaning the endoscope 10, the engaging portion 216 is slid from the narrow portion 224 to the wide portion 226, and from the wide portion 226 to the engaging portion. Pull out 216.

Therefore, according to the attachment structure 210 of the second embodiment, the base end of the wire 60 can be detached from the movable member 96 only by pulling out the engaging portion 216 from the wide portion 226.

Therefore, according to the attachment structure 210 of the second embodiment, similarly to the attachment structure 170 of the first embodiment, it is easy to attach and detach the proximal end of the wire 60 with respect to the standing operation mechanism 120 (see FIGS. 9 and 10). It can be carried out.

As described above, according to the endoscope 10 of the embodiment having the mounting structure 210 of the second embodiment, the cleaning performance of the endoscope 10 can be easily performed while the proximal end of the wire 60 is easily attached to and detached from the standing operation mechanism 120. Can be improved.

In addition, in FIG. 31, although the engagement hole 214 provided with the friction resistance part 230 was illustrated, the engagement hole 214 which is not provided with the friction resistance part 230 may be sufficient.

Next, the mounting structure 232 of the third embodiment will be described with reference to FIG. 32 and FIG.

FIG. 32 is an assembly perspective view of the mounting structure 232. FIG. 33 is a plan view of the engagement hole 214 formed in the movable member 96, and shows the shape of the enlarged diameter portion 238 of the engagement portion 236 of the attachment member 234 superimposed on the shape of the engagement hole 214. Yes. In the description of the mounting structure 232, members that are the same as or similar to the mounting structure 210 shown in FIGS.

33, the engagement hole 214 has a narrow part 224 having a diameter a and a wide part 226 having a diameter b larger than the diameter a. The narrow portion 224 and the wide portion 226 are in a positional relationship as in FIG.

Further, the engaging portion 236 of the attachment member 234 shown in FIG. 32 is provided at the shaft portion 220 having an outer diameter c equal to or smaller than the diameter a and the tip of the shaft portion 220, and has an outer diameter f larger than the diameter b. And a large-diameter portion 238 in which a plurality of (for example, four) slits 237 (see FIG. 32) are formed. The enlarged diameter portion 238 is elastically deformed by the plurality of slits 237 and reduced in diameter when the enlarged diameter portion 238 is inserted into the wide portion 226.

According to the mounting structure 232 configured as described above, when the enlarged diameter portion 238 is fitted into the wide portion 226 of the engagement hole 214, the enlarged diameter portion 238 is elastically deformed by the plurality of slot grooves 237 and reduced in diameter. . Thereby, the enlarged diameter part 238 passes through the wide part 226, and when the enlarged diameter part 238 passes through the wide part 226, the enlarged diameter part 238 returns to the original diameter. As a result, the enlarged diameter portion 238 is engaged with the back surface 160A of the beam portion 160 of the movable member 96, so that the attachment member 234 is prevented from coming off from the movable member 96.

Thereafter, the engaging portion 236 is slid toward the narrow portion 224, and the engaging portion 236 is engaged with the narrow portion 224. As a result, the attachment member 234 is coupled to the movable member 96.

Therefore, according to the attachment structure 232 of the third embodiment, the base end of the wire 60 can be attached to the movable member 96 only by engaging the engaging portion 236 with the narrow portion 224.

Further, in a state in which the engaging portion 236 is engaged with the narrow portion 224, the diameter expanding portion 238 can prevent the shaft portion 220 from being detached from the narrow portion 224 in the axial direction of the shaft portion 220. . Further, the shaft portion 220 abuts against the frictional resistance portion 230, so that the engagement portion 236 can be prevented from sliding from the narrow portion 224 toward the wide portion 226. Thereby, the attachment member 234 can be reliably connected to the movable member 96.

On the other hand, when removing the proximal end of the wire 60 from the movable member 96 during cleaning of the endoscope 10, the engaging portion 236 of the attachment member 234 is slid from the narrow portion 224 to the wide portion 226, and then the diameter is increased. The part 238 is picked with a finger, the diameter-enlarged part 238 is reduced in diameter, and the diameter-enlarged part 238 is pulled out from the wide part 226.

Therefore, according to the mounting structure 232 of the third embodiment, the base end of the wire 60 can be removed from the movable member 96 only by pulling out the enlarged diameter portion 238 from the wide portion 226.

Therefore, according to the attachment structure 232 of the third embodiment, similarly to the attachment structure 170 of the first embodiment, the operation of attaching and detaching the proximal end of the wire 60 to the standing operation mechanism 120 (see FIGS. 9 and 10) can be easily performed. It can be carried out.

As described above, according to the endoscope 10 of the embodiment having the attachment structure 232 of the third embodiment, the cleaning performance of the endoscope 10 can be easily performed while the proximal end of the wire 60 is easily attached to and detached from the standing operation mechanism 120. Can be improved.

In addition, in FIG. 33, although the engagement hole 214 provided with the friction resistance part 230 was illustrated, the engagement hole 214 which is not provided with the friction resistance part 230 may be used.

Next, with reference to FIG.34 and FIG.35, the attachment structure 240 of 4th Embodiment is demonstrated.

34 is a perspective view of the mounting structure 240, and FIG. 35 is an assembly perspective view of the mounting structure 210.

The mounting structure 240 includes a movable member 242 and a mounting member 244.

The movable member 242 includes a first bearing portion 162, a second bearing portion 164, and a cylindrical body 246 that connects the first bearing portion 162 and the second bearing portion 164. The cylindrical body 246 extends in a direction (X (+)-X (−) direction) perpendicular to the axial direction of the wire 60. In FIGS. 34 and 35,

U-shaped grooves

248 and 250 constituting rotation restriction stoppers are formed at the upper end portions of the first bearing portion 162 and the second bearing portion 164, respectively. The movable member 242 is also attached to the operation unit 22 with the same attachment structure as the movable member 96 shown in FIG.

On the other hand, the base end of the wire 60 is connected to the mounting member 244. The attachment member 244 includes an annular body 252 that is rotatably engaged with the outer periphery of the cylindrical body 246, and pins 254 and 256 that together with the

grooves

248 and 250 constitute a rotation restricting stopper. The annular body 252 has a C-shaped cross section perpendicular to the longitudinal direction, and the slit 253 formed in the longitudinal direction is pressed against the cylindrical body 246 to expand the diameter and engage with the cylindrical body 246. .

According to the mounting structure 240 configured as described above, the slit 253 of the annular body 252 of the mounting member 244 is pressed against the cylindrical body 246 of the movable member 242, and the annular body 252 is engaged with the cylindrical body 246.

Therefore, according to the attachment structure 240 of the fourth embodiment, the base end of the wire 60 can be attached to the movable member 242 only by engaging the annular body 252 with the cylindrical body 246.

Further, when the annular body 252 is engaged with the cylindrical body 246, the pin 254 is engaged with the groove 248 and the pin 256 is engaged with the groove 250 at the same time, so that the movable member 242 pushes and pulls the wire 60. Sometimes, the relative rotation of the annular body 252 with respect to the cylindrical body 246 can be prevented. Thereby, the wire 60 can be smoothly pushed and pulled.

On the other hand, when the proximal end of the wire 60 is removed from the movable member 242 when the endoscope 10 is cleaned, the annular body 252 is cylindrical when the attachment member 244 is pulled in the direction of removing the

pins

254 and 256 from the

grooves

248 and 250. The diameter is increased by being pushed by the body 246, and the annular body 252 is detached from the cylindrical body 246.

Therefore, according to the attachment structure 240 of the fourth embodiment, the base end of the wire 60 can be detached from the movable member 96 only by pulling the attachment member 244.

Therefore, according to the attachment structure 240 of the fourth embodiment, the attachment / detachment operation of the proximal end of the wire 60 with respect to the upright operation mechanism 120 (see FIGS. 9 and 10) can be easily performed as with the attachment structure 170 of the first embodiment. It can be carried out.

As described above, according to the endoscope 10 of the embodiment having the attachment structure 240 of the fourth embodiment, the cleaning performance of the endoscope 10 can be easily performed while the proximal end of the wire 60 is easily attached to and detached from the standing operation mechanism 120. Can be improved.

In the above embodiment, the movable member 242 is provided with the cylindrical body 246, and the mounting member 244 is provided with the annular body 252. However, the movable member 242 and the mounting member 244 are provided with the cylindrical body 246, and the other An annular body 252 may be provided on the surface.

Next, an attachment structure 270 of the fifth embodiment will be described with reference to FIGS.

36 is a perspective view of the mounting structure 270, and FIGS. 37 and 38 are assembly perspective views of the mounting structure 270. FIG.

As shown in FIG. 37, the attachment structure 270 includes a movable member 96 and an attachment member 272.

The attachment member 272 includes a shaft portion 274 extending in a direction perpendicular to the axial direction of the wire 60, a connecting portion 276 extending in a direction h perpendicular to the longitudinal axis g of the shaft portion 274, and a shaft of the connecting portion 276. A locking portion 278 provided on the opposite side to the portion 274 is provided.

The beam portion 160 of the movable member 96 is provided with a mounting hole 280 into which the shaft portion 274 is inserted, and a locking groove portion 282 in which the locking portion 278 is locked. The mounting hole 280 is formed along the axial direction of the wire 60, and the length j of the mounting hole 280 along the axial direction is obtained by adding the diameter k of the shaft portion 274 and the length m of the connecting portion 276. It is set longer than the length.

The locking portion 278 is locked as shown in FIG. 36 when the shaft portion 274 is rotated around the longitudinal axis g of the shaft portion 274 in the state of FIG. 38 in which the shaft portion 274 is inserted deeply into the mounting hole 280. The groove 282 is locked. Further, as shown in FIG. 37, the beam portion 160 is formed with a notch 284 penetrating the mounting hole 280. As shown in FIG. 36, when the locking portion 278 is locked in the locking groove portion 282, the connecting portion 276 is received in the mounting hole 280 via the notch portion 284.

As shown in FIG. 37, the connecting portion 276 is provided with a wire groove portion 286 along the direction h which is the extending direction of the connecting portion 276. The wire groove portion 286 accommodates the wire 60 when the locking portion 278 is locked to the locking groove portion 282.

According to the mounting structure 270 configured as described above, the shaft portion 274 is inserted into the mounting hole 280, the shaft portion 274 is rotated around the longitudinal axis g of the shaft portion 274, and the locking portion 278 is locked to the locking groove portion. Lock to 282.

Therefore, according to the attachment structure 270 of the fifth embodiment, the proximal end of the wire 60 can be attached to the movable member 96 only by inserting the shaft portion 274 into the mounting hole 280 and rotating the shaft portion 274.

On the other hand, when the proximal end of the wire 60 is removed from the movable member 96 when the endoscope 10 is cleaned, the locking portion 278 is picked up with a finger and removed from the locking groove portion 282, and the shaft portion 274 is pulled out from the mounting hole 280. .

Therefore, according to the attachment structure 270 of the fifth embodiment, the base end of the wire 60 is removed from the movable member 96 simply by removing the locking portion 278 from the locking groove portion 282 and pulling out the shaft portion 274 from the mounting hole 280. be able to.

Therefore, according to the attachment structure 270 of the fifth embodiment, similarly to the attachment structure 170 of the first embodiment, the attachment / detachment operation of the proximal end of the wire 60 with respect to the standing operation mechanism 120 (see FIGS. 9 and 10) can be easily performed. It can be carried out.

As described above, according to the endoscope 10 of the embodiment having the attachment structure 270 of the fifth embodiment, the cleaning performance of the endoscope 10 can be easily performed while the proximal end of the wire 60 is easily attached to and detached from the standing operation mechanism 120. Can be improved.

Next, the attachment structure 290 of the sixth embodiment will be described with reference to FIG. 39 and FIG.

39 is a perspective view of the mounting structure 290, and FIG. 40 is an assembled perspective view of the mounting structure 290. FIG.

40, the attachment structure 290 includes a movable member 96 and an attachment member 292.

The attachment member 292 includes a pair of

claw portions

294A and 294B, a spring 296 that urges the pair of

claw portions

294A and 294B toward each other, and a pair of

claw portions

294A and 294B against the urging force of the spring 296. A pair of

knobs

298A and 298B are provided for moving the two in a direction away from each other. The spring 296 corresponds to the biasing member of the present invention.

The claw portion 294A and the knob portion 298A are integrally formed. Similarly, the claw portion 294B and the knob portion 298B are integrally formed and are pivotally supported by the shaft 300. The proximal end of the wire 60 is fixed to the shaft 300.

The beam 160 of the movable member 96 is provided with a pair of mounting

holes

302A and 302B in which the pair of

claws

294A and 294B are mounted by the biasing force of the spring 296.

According to the mounting structure 290 thus configured, the pair of

claw portions

298A, 298B is pinched to widen the distance between the pair of

claw portions

294A, 294B, and the pair of

claw portions

294A, 294B are paired with the pair of mounting holes 302A, Insert into 302B and release the fingers from the pair of

claws

294A, 294B. Accordingly, the pair of

knobs

298A and 298B are locked to the pair of mounting

holes

302A and 302B by the biasing force of the spring 296.

Therefore, according to the attachment structure 290 of the sixth embodiment, the base end of the wire 60 is attached to the movable member 96 only by engaging the pair of

knobs

298A, 298B with the pair of mounting

holes

302A, 302B. Can do.

On the other hand, when removing the proximal end of the wire 60 from the movable member 96 during cleaning of the endoscope 10, the pair of

claw portions

298A and 298B are pinched to widen the distance between the pair of

claw portions

294A and 294B. The

claw portions

294A and 294B are removed from the pair of mounting

holes

302A and 302B.

Therefore, according to the attachment structure 290 of the sixth embodiment, the base end of the wire 60 can be removed from the movable member 96 only by removing the pair of

knobs

298A, 298B from the pair of mounting

holes

302A, 302B. .

Therefore, according to the attachment structure 290 of the sixth embodiment, the attaching / detaching operation of the proximal end of the wire 60 with respect to the standing operation mechanism 120 (see FIGS. 9 and 10) can be easily performed as in the attachment structure 170 of the first embodiment. It can be carried out.

As described above, according to the endoscope 10 of the embodiment having the attachment structure 290 of the sixth embodiment, the cleaning performance of the endoscope 10 can be easily performed while the proximal end of the wire 60 is easily attached to and detached from the standing operation mechanism 120. Can be improved.

Next, the attachment structure 310 of the seventh embodiment will be described with reference to FIGS.

41 is a perspective view of the mounting structure 310, and FIGS. 42 and 43 are assembly perspective views of the mounting structure 3100. FIG.

42, the attachment structure 310 includes a movable member 96 and an attachment member 312.

A fixed shaft portion 316 is provided on the beam portion 160 of the movable member 96. Further, the attachment member 312 is formed in a plate shape and is provided with a fixing hole 318 to be fitted to the fixed shaft portion 316.

Also, the attachment member 312 is provided with a retaining hole 320, and the movable member 96 is provided with a retaining part 322 that is fitted into the retaining hole 320. The retaining portion 322 is formed in a shaft shape. Further, the retaining portion 322 is provided integrally with a soft resin sheet 324 such as polypropylene and is connected to the beam portion 160 via the resin sheet 324.

According to the mounting structure 310 thus configured, the fixing hole 318 is fitted into the fixed shaft portion 316 as shown in FIG. 43, and the retaining portion 322 is fitted into the retaining hole 320 as shown in FIG.

Therefore, according to the attachment structure 310 of the seventh embodiment, the base end of the wire 60 can be secured only by fitting the fixing hole 318 to the fixed shaft portion 316 and fitting the retaining portion 322 to the retaining hole 320. The movable member 96 can be attached.

On the other hand, when removing the proximal end of the wire 60 from the movable member 96 during the cleaning of the endoscope 10, the retaining portion 322 is pulled out from the retaining hole 320 and the fixing hole 318 is pulled out from the fixed shaft portion 316.

Therefore, according to the attachment structure 310 of the seventh embodiment, the base end of the wire 60 can be moved to the movable member only by pulling out the fixing hole 318 from the fixed shaft portion 316 after pulling out the retaining portion 322 from the retaining hole 320. 96 can be removed.

Therefore, according to the attachment structure 310 of the seventh embodiment, similarly to the attachment structure 170 of the first embodiment, the attachment / detachment operation of the proximal end of the wire 60 with respect to the standing operation mechanism 120 (see FIGS. 9 and 10) can be easily performed. It can be carried out.

As described above, according to the endoscope 10 of the embodiment having the attachment structure 310 of the seventh embodiment, the cleaning performance of the endoscope 10 can be easily performed while the proximal end of the wire 60 is easily attached to and detached from the standing operation mechanism 120. Can be improved.

In the attachment structure 310, the fixed shaft portion 316 is provided in the movable member 96 and the fixing hole 318 is provided in the attachment member 312. However, the present invention is not limited to this, and the fixed hole 318 is provided in the movable member 96. A fixed shaft portion 316 may be provided.

In the mounting structure 310, the retaining member 312 is provided with the retaining hole 320, and the movable member 96 is provided with the retaining portion 322. However, the present invention is not limited thereto, and the mounting member 312 is provided with the retaining portion 322. 96 may be provided with a retaining hole 320.

Next, with reference to FIG.44 and FIG.47, the attachment structure 330 of 8th Embodiment is demonstrated.

44 is a perspective view of the mounting structure 330, and FIG. 45 is an assembly perspective view of the mounting structure 330. FIG. 46 is a cross-sectional view showing the main configuration of the mounting structure 330, and FIG. 47 is an explanatory view showing a state where a shaft portion 334, which will be described later, is broken by the pressing portion 346.

As shown in FIG. 45, the attachment structure 310 includes a movable member 96 and an attachment member 332.

The attachment member 332 is provided at a shaft portion 334 extending in the axial direction of the wire 60, a small-diameter portion 336 formed at the center portion in the longitudinal axis direction of the shaft portion 334, and one end portion of the shaft portion 334. A first locking portion 338 and a second locking portion 340 provided at the other end of the shaft portion 334 are provided.

The first locking portion 338 has a stopper portion 338A having a diameter larger than the diameter of the shaft portion 334 and a knob portion 338B formed on the stopper portion 338A. Similarly, the second locking portion 340 includes a stopper portion 340A having a diameter larger than the diameter of the shaft portion 334 and a knob portion 340B formed on the stopper portion 340A.

The beam portion 160 of the movable member 96 includes a fixed groove 342 that receives the shaft portion 334, and a stopper portion 338 A and a second lock portion of the first locking portion 338 when the shaft portion 334 is received in the fixed groove 342. 340 is abutting against the stopper portion 340A of the 340 and restricts the movement of the shaft portion 334 in the longitudinal axis direction, and a shaft formed when the shaft portion 334 is accommodated in the fixed groove 342 formed in the fixed groove 342. A convex pressing portion 346 (see FIG. 46) that is in contact with the central portion of the portion 334 is provided.

As shown in FIG. 46, the retaining portion 344 is provided with a pair of retaining

pieces

344A and 344A and a pair of retaining

portions

344A and 344A that are disposed with a gap along the longitudinal direction of the shaft portion 334 in a direction approaching each other. A pair of

elastic members

344B and 344B. The elastic member 344B corresponds to the biasing member of the present invention.

According to the mounting structure 330 configured in this manner, the

knobs

338B and 340B are picked with fingers, and the shaft part 334 is urged by the

elastic members

344B and 344B from the gap between the pair of retaining

pieces

344A and 344A. To be accommodated in the fixing groove 342. Accordingly, the axial movement of the shaft portion 334 is restricted by the retaining portion 344, and the shaft portion 334 is prevented from being detached from the fixing groove 343 by the pair of retaining

portions

344A and 344A.

Therefore, according to the attachment structure 330 of the eighth embodiment, the base end of the wire 60 can be attached to the movable member 96 only by the operation of accommodating the shaft portion 334 in the fixed groove 342.

On the other hand, when the proximal end of the wire 60 is removed from the movable member 96 when the endoscope 10 is cleaned, the

knobs

338B and 340B are picked and the shaft part 334 is pressed toward the fixed groove 342. As a result, the small diameter portion 336 is pressed by the pressing portion 346, the small diameter portion 336 is broken as shown in FIG. 47, and the shaft portion 334 is divided into two

shaft portions

334A and 334A. Thereafter, the two

shaft portions

334A and 334A are pulled out from the fixing groove 342 in the respective axial directions.

Therefore, according to the attachment structure 330 of the eighth embodiment, the wire 60 can be obtained simply by dividing the shaft portion 334 into the two

shaft portions

334A and 334A and pulling out the two

shaft portions

334A and 334A from the fixing groove 342. Can be removed from the movable member 96.

Therefore, according to the attachment structure 330 of the eighth embodiment, the attachment / detachment operation of the proximal end of the wire 60 with respect to the standing operation mechanism 120 (see FIGS. 9 and 10) can be easily performed in the same manner as the attachment structure 170 of the first embodiment. It can be carried out.

As described above, according to the endoscope 10 of the embodiment having the mounting structure 330 of the eighth embodiment, the rinsing performance of the endoscope 10 can be easily performed while the proximal end of the wire 60 is easily attached to and detached from the standing operation mechanism 120. Can be improved.

Although the specific example of the attachment structure of the attachment member with respect to the movable member of the present invention has been described by the above embodiment, the present invention is not limited to the above embodiment, and is within the scope of the present invention. Various modifications and substitutions can be added to the embodiment.

In the above-described embodiment, a duodenoscope has been exemplified and described as the endoscope 10. However, if the endoscope is provided with an upright table that adjusts the leading direction of the treatment tool at the distal end portion of the insertion portion, ultrasonic endoscope The present invention can be applied to various endoscopes such as mirrors.

DESCRIPTION OF SYMBOLS 10 Endoscope 12 Endoscope system 14 Processor apparatus 16 Light source apparatus 18 Display 20 Standing operation lever 22 Operation part 21 Screw hole 22A One side surface 22B The other side surface 23 Opening part 24 Insertion part 26 Tip part 28 Tip member 28A Circumferential surface 30 Standing base 30A Guide surface 30B Base 32 Operation unit main body 34 Holding part 36 Extension part 38 Folding prevention pipe 38A Base end part 40 Flange 42 Treatment instrument introduction port 44 Mount part 44A Tip part 46 Universal cord 48 Electric connector 50 Light source connector 52 Curved portion 54 Soft portion 56 Treatment instrument 56A Tip 58 Treatment instrument channel 60 Wire 62 Wire channel 64 Angle knob 66 Air / water supply button 68 Suction button 70 Air supply / water supply nozzle 72 Treatment instrument outlet 74 Outlet 76 Cap member 76A Opening window 78 Bulkhead 78A Bearing 80 Wall 80A Bearing portion 82 Standing table accommodating chamber 84 Rotating shaft portion 86 Rotating shaft portion 88 Optical system accommodating chamber 90 Illuminating window 92 Observation window 94 Inlet 95 Valve body 96 Movable member 98 Mounting member 98A Mounting member 100 Engaging member 102 Housing groove 104 Opening 106 Engaging guide part 108 Engaging guide path 110 Deformation generating part 112 Groove 114 Groove 116 Detaching guide surface 120 Standing operation mechanism 124 First conversion mechanism 126 Wire 128 Second conversion mechanism 130 Crank member 132 First slider 134 Second slider 136 Lever 138 First gear 140 Second gear 142 Third gear 144 Fourth gear 146 Bracket 148 Shaft portion 150 Shaft portion 152 Rotating shaft 154 Rotating body 156 Sleeve 158 O-ring 160 Beam portion 160A Back surface 162 First side Bearing part 163 Recessed part 164 Second bearing part 165 Through hole 166 O 167 ... cap member 168 driven shaft 169 spacer 170 mounting structure 170A mounting structure 172 wire assembly 174 engagement hole 174A engagement hole 175 edge portion 176 engagement portion 176A engagement portion 177 cylindrical portion 178 core portion 180 hole portion 182 Notch 182A Slotted portion 184 Elastically deformable portion 184A Slotted portion 186 Claw portion 186A Claw portion 187 Tapered portion 200 Branch pipe 202 End pipe 204 Pipe line 206 Pipe line 208 Suction pipe 210 Mounting structure 212 Mounting member 214 Engaging hole 216 Engagement Joint section 218 Knob section 220 Shaft section 222 Hole section 224 Narrow section 226 Wide section 228 Large diameter section 230 Friction resistance section 232 Mounting structure 234 Mounting member 236 Slitting groove 238 Large diameter section 240 Widening section 240 Mounting structure 242 Movable Member 244 Mounting member 246 Cylindrical body 248 Groove 250 Groove 252 Annular 253 Slit 254 Pin 256 Pin 270 Mounting structure 272 Mounting member 274 Shaft portion 276 Connecting portion 278 Locking portion 280 Mounting hole 282 Locking groove portion 284 Notch portion 286 Wire groove portion 290 Mounting structure 292 Mounting member 294A Claw portion 294B Claw portion 296 Spring 298A Knob section 298B Knob section 300 Shaft 302A Mounting hole 302B Mounting hole 310 Mounting structure 312 Mounting member 316 Fixed shaft section 318 Fixed hole 320 Retaining hole 322 Retaining section 324 Resin sheet 330 Mounting structure 332 Mounting member 334 Shaft section 336 Small diameter Portion 338 first locking portion 338A stopper portion 338B knob portion 340 second locking portion 340A stopper portion 340B knob portion 342 fixing groove 344 retaining portion 344A retaining member 344B elastic member 346 pressing portion

Claims

An operation unit provided with an operation member;
An insertion portion provided on a distal end side of the operation portion;
A treatment instrument stand provided at the distal end of the insertion portion;
A movable member that is exposed outside the operation unit and operates in conjunction with the operation of the operation member;
A first shaft part that is exposed outside the operation part and rotatably supports the movable member on the operation part;
A first bearing portion provided on one end side of the movable member, wherein a bottomed concave portion is formed on an inner surface facing the operation portion, and the first shaft portion is accommodated in the concave portion. A first bearing portion covering the first shaft portion;
A seal member disposed between an outer peripheral surface of the first shaft portion and an inner peripheral surface of the concave portion of the first bearing portion;
An erection operation wire for operating the treatment instrument erection base by connecting a distal end side to the treatment instrument erection base, a proximal end side connected to the movable member, and being pushed and pulled according to the operation of the movable member;
An attachment member provided at a proximal end of the standing operation wire and detachably engaged with the movable member;
An endoscope comprising:
The first shaft portion is a shaft portion that transmits the operation of the operation portion to the movable member.
The endoscope according to claim 1.
2nd bearing part provided in the other end side of the said movable member, Comprising: The 2nd bearing which has a through-hole toward the outer side surface on the opposite side to the said inner surface from the inner surface facing the said operation part And
A second shaft portion inserted into the through hole and fixed to the operation portion, and pivotally supporting the second bearing portion to the operation portion via the through hole;
A closing member for closing the opening on the outer surface side of the through hole;
The endoscope according to claim 1, comprising:
Either one of the movable member and the attachment member is provided with an engagement hole, and the other is provided with an engagement portion that is detachably engaged with the engagement hole.
The endoscope according to any one of claims 1 to 3.
The engagement portion is provided with an elastic deformation portion that is elastically deformed and engaged with the engagement hole.
The endoscope according to claim 4.
The elastic deformation portion is formed with a pair of elastically deformable claw portions that are engaged with an edge portion of the engagement hole. When the engagement hole and the engagement portion are engaged or disengaged, , Displacing the pair of claws in a direction to approach each other by elastic deformation,
The endoscope according to claim 5.
The engaging portion has a cylindrical portion inserted into the engaging hole,
The elastic deformation portion is configured by a slit portion provided at a distal end portion of the cylindrical portion, and when the distal end portion of the cylindrical portion is inserted into the engagement hole, the slit portion is elastically deformed. Constructed to reduce diameter,
The endoscope according to claim 5.
The engagement hole has a narrow portion having a first width and a wide portion having a second width larger than the first width,
The engaging portion is provided with a shaft portion having an outer diameter equal to or smaller than the first width, and an enlarged diameter provided at a tip of the shaft portion and having an outer diameter larger than the first width and smaller than the second width. Having a part,
The endoscope according to claim 4.
The engagement hole has a narrow portion having a first width and a wide portion having a second width larger than the first width,
The engaging portion is provided at a shaft portion having an outer diameter equal to or smaller than the first width and a tip of the shaft portion, has an outer diameter larger than the second width, and has a plurality of slits. And having an enlarged diameter portion to be the elastically deformable portion,
When the enlarged diameter portion is inserted into the wide portion, the enlarged diameter portion is configured to be elastically deformed by the plurality of slits and to be reduced in diameter.
The endoscope according to claim 5.
The engagement hole is configured to apply a frictional resistance to the shaft portion by contacting the outer peripheral surface of the shaft portion when the shaft portion is moved between the narrow portion and the wide portion. Having
The endoscope according to claim 8 or 9.
One of the movable member and the mounting member is provided with a cylindrical body extending in a direction perpendicular to the axial direction of the standing operation wire, and the other is rotatably engaged with the outer periphery of the cylindrical body. An annular body is provided,
A rotation restriction stopper for restricting relative rotation between the cylindrical body and the annular body;
The endoscope according to any one of claims 1 to 3.
The mounting member includes a shaft portion extending in a direction perpendicular to the axial direction of the standing operation wire, a connecting portion extending in a direction perpendicular to the longitudinal axis of the shaft portion, and the shaft portion of the connecting portion. And a locking portion provided on the opposite side,
The movable member includes a mounting hole into which the shaft portion is inserted, and the engagement portion when the shaft portion is rotated around the longitudinal axis of the shaft portion with the shaft portion being inserted into the mounting hole. A locking groove for locking the locking portion is provided,
The endoscope according to any one of claims 1 to 3.
The connecting portion is provided with a wire groove portion along the extending direction of the connecting portion, the wire groove portion accommodating the standing operation wire when the locking portion is locked to the locking groove portion. Be
The endoscope according to claim 12.
The mounting member includes a pair of claws, a biasing member that biases the pair of claws in a direction to approach each other, and a direction in which the pair of claws are moved away from each other against the biasing force of the biasing member. And a knob for moving the
The movable member is provided with a pair of mounting holes in which the pair of claws are mounted by the biasing force of the biasing member.
The endoscope according to any one of claims 1 to 3.
Either one of the movable member and the mounting member is provided with a fixed shaft portion, and the other is provided with a fixed hole into which the fixed shaft portion is fitted.
Either one of the movable member and the mounting member is provided with a retaining hole, and the other is provided with a retaining part fitted to the retaining hole.
The endoscope according to any one of claims 1 to 3.
The mounting member is provided at a shaft portion extending in the axial direction of the standing operation wire, a small diameter portion formed at a central portion in the longitudinal axis direction of the shaft portion, and one end portion of the shaft portion. A first locking portion and a second locking portion provided at the other end of the shaft portion,
The movable member includes a fixed groove that receives the shaft portion, and the first locking portion and the second locking portion that are in contact with the shaft when the shaft portion is received in the fixed groove. A retaining portion for restricting movement of the portion in the longitudinal axis direction, and a convex push formed in the fixed groove and abutted against the central portion of the shaft portion when the shaft portion is received in the fixed groove A padding portion is provided,
The endoscope according to any one of claims 1 to 3.
The retaining portion includes a pair of retaining pieces disposed with a gap along the longitudinal direction of the shaft portion, and a biasing member that urges the pair of retaining pieces in a direction approaching each other. ,
The shaft portion is accommodated in the fixed groove against the urging force of the urging member from the gap between the pair of retaining pieces.
The endoscope according to claim 16.