Endoscope

Abstract

The utility model aims to provide an endoscope which can reliably clean or disinfect an accommodating part of a standing table through a simple structure. An endoscope is provided with: a tip section (10) in which a stand housing section (34) is formed; an erecting table (30) arranged in the erecting table accommodating part (34); and a treatment tool insertion channel (50) that communicates with a treatment tool outlet (58) that opens to the stand housing section (34), the treatment tool insertion channel (50) having an expanded-diameter section (56) that expands in diameter toward the treatment tool outlet (58).

Description

Technical Field

[0001] This utility model relates to an endoscope, and more particularly to an endoscope with a standing stage. Background Technology

[0002] In an endoscope, various instruments are inserted into the instrument insertion port located in the operating section, and then exited from the instrument outlet, which has an opening at the front end. The instruments exiting from the outlet are then used for procedures such as tissue collection or treatment within the patient's body. For example, instruments such as guidewires or contrast tubes are used in duodenoscopy, and puncture needles are used in ultrasound endoscopy.

[0003] As described above, the treatment instrument is displaced or bent to face the desired location within the patient for treatment. Therefore, a treatment instrument erecting mechanism (erecting platform) is provided at the anterior end of the endoscope for changing the direction of the treatment instrument's delivery.

[0004] In endoscopes equipped with the stand as described above, bodily fluids of the patient (e.g., tissue fluid, blood, or digestive fluids) may sometimes seep into the stand housing. Therefore, cleaning and disinfection are necessary each time the endoscope is used. For cleaning the endoscope, functional water or water, such as strongly acidic electrolyzed water or ozone water, is used. For disinfection, high-level disinfectants (glutaraldehyde, phthalaldehyde, or peracetic acid) are used. In the following description, the cleaning solution or disinfectant will be referred to as a cleaning or disinfecting liquid.

[0005] When cleaning and disinfecting the stand-up container, the stand-up apparatus and other fixtures located inside the container may obstruct the flow of cleaning or disinfecting liquid, potentially resulting in areas where cleaning and disinfection are insufficient. In the endoscope described in Patent Document 1, to prevent such areas from being insufficiently cleaned and disinfected, an inlet (hereinafter referred to as a liquid injection port) and an outlet (hereinafter referred to as a liquid discharge port) are formed on the wall of the stand-up container. Liquid is injected into the stand-up container through the liquid injection port and discharged through the liquid discharge port. More specifically, in Patent Document 1, the liquid injection port is formed towards the stand-up apparatus located in the stand-up container, and the liquid discharge port is formed on the lower wall of the stand-up apparatus, thereby allowing liquid to flow to the lower side of the stand-up apparatus and preventing incomplete cleaning and disinfection of the lower side.

[0006] Patent Document 1: International Publication No. 2018 / 145433

[0007] As described in Patent Document 1, when a liquid inlet is provided on the wall of the upright platform receiving section, bodily fluids can also enter the liquid injection path through the liquid inlet that opens into the upright platform receiving section. Therefore, it is also necessary to clean and disinfect the liquid inlet and the liquid injection path.

[0008] However, as mentioned above, since the liquid inlet is oriented towards the upright platform, the upright platform becomes an obstacle to the cleaning and disinfection of the liquid inlet and the liquid injection path. For example, when a cleaning brush is inserted into the liquid injection path and pulled out to the side opposite to the insertion side for cleaning, the upright platform becomes an obstacle to the operation of the cleaning brush.

[0009] Furthermore, the endoscope described in Patent Document 1 requires space for the injection path of liquid. As a result, the size (diameter) of the tip of the endoscope inserted into the body cavity of the subject becomes larger. Utility Model Content

[0010] This invention was made in view of this situation, and its purpose is to provide an endoscope that can reliably clean or disinfect the stand housing through a simple structure.

[0011] The endoscope according to the first aspect of this utility model includes: a front end portion having a stage receiving portion; a stage disposed in the stage receiving portion; and a treatment instrument insertion channel communicating with a treatment instrument outlet opening into the stage receiving portion, the treatment instrument insertion channel having an enlarged portion that enlarges toward the treatment instrument outlet.

[0012] The endoscope according to the second aspect of this utility model, in the first aspect, has a wire insertion channel for inserting an operating wire. The wire insertion channel and the standing platform are arranged on opposite sides of each other through a partition wall. A through hole is provided on the partition wall, passing through the side with the wire insertion channel and the side with the standing platform. The endoscope has a power transmission component, which is inserted through the through hole, with one end connected to the standing platform and the other end connected to the operating wire.

[0013] The endoscope according to the third aspect of this utility model, in the second aspect, has a power transmission component comprising: a rotating shaft, one end of which is connected to the erecting platform; and an erecting rod, which is disposed at the other end of the rotating shaft and connected to the operating line.

[0014] The endoscope involved in the fourth aspect of this utility model, in the first aspect, has a wire insertion channel for inserting the operating wire, and the stand is rotatably disposed in the stand receiving part, and the operating wire is connected to the stand.

[0015] In any of the first to fourth embodiments, the endoscope according to the fifth embodiment of this utility model has an opening in the stage receiving portion, which opens toward a first orientation having a component of a direction orthogonal to the opening direction of the treatment instrument outlet. In a cross-section of the enlarged portion along the plane defined by the opening direction of the treatment instrument outlet and the first orientation, the extension line of the bottom of the second orientation side of the enlarged portion opposite to the first orientation is located closer to the second orientation side than the rotation axis of the stage.

[0016] In any of the first to fifth embodiments of the present invention, the endoscope according to the sixth embodiment has an opening in the stage receiving portion, which opens toward a first orientation having a component of a direction orthogonal to the opening direction of the treatment device outlet. The stage has a treatment device guide surface that guides the treatment device that is led out of the treatment device outlet toward the opening. In the cross section of the treatment device insertion channel along the plane defined by the opening direction of the treatment device outlet and the first orientation, in the connection portion in the treatment device insertion channel connected to the base end side of the enlarged portion, the extension line of the bottom of the second orientation side opposite to the first orientation intersects the treatment device guide surface.

[0017] In the seventh aspect of this utility model, the endoscope, in any of the first to sixth aspects, has its treatment instrument outlet also serving as a liquid supply port for supplying cleaning or disinfecting liquid to the standing table.

[0018] The endoscope according to the eighth aspect of this utility model, in the seventh aspect, has a standing stage having a liquid guiding surface that guides the liquid supplied to the standing stage toward the direction of the rotation axis on which the standing stage is provided.

[0019] In the ninth aspect of this utility model, the endoscope, in the eighth aspect, has a liquid guiding surface positioned opposite to the outlet of the treatment device when the stand is in an upright state.

[0020] Utility model effect

[0021] According to this utility model, by providing an enlarged diameter section that expands from the insertion channel of the treatment device toward the outlet of the treatment device, the cleaning or disinfection of the upright table receiving section can be reliably performed. Attached Figure Description

[0022] Figure 1 This is an exploded perspective view showing the front end of the endoscope according to the first embodiment of the present invention.

[0023] Figure 2 This is a three-dimensional sectional view showing the front end of the endoscope according to the first embodiment of the present invention.

[0024] Figure 3This is a cross-sectional view showing the front end of the endoscope according to the first embodiment of the present invention compared with a comparative example.

[0025] Figure 4 This is a diagram showing a modified example of the expanded diameter section.

[0026] Figure 5 This is a cross-sectional view showing the front end of the endoscope according to the second embodiment of the present invention.

[0027] Explanation of symbols

[0028] 10-Front end, 12-Frame body, 14-Front end cover, 16-Opening, 20-Lighting window, 22-Observation window, 24-Air and water supply nozzle, 30-Erecting platform, 30A-Erecting platform, 30G-Treatment device guide surface, 30G1-First surface, 30G2-Second surface, 32-Rotating shaft insertion hole, 34-Erecting platform receiving part, 36-Liquid outlet, 50-Treatment device insertion channel, 52-Insertion part, 54-Connecting part, 56-Expanding diameter part, 56 a-Expanding section, 56b-Expanding section, 56c-Expanding section, 58-Treatment device outlet, 60-Block, 62-Through hole, 64-Line insertion channel, 70-Uplift rod, 72-Rotating shaft, 74-Operating line, EX1-Extension line, EX1a-Extension line, EX1b-Extension line, EX1c-Extension line, EX2-Extension line, AX-Shaft, AXa-Shaft, 10C-Front end, 40C-Liquid supply channel, 50C-Treatment device insertion channel. Detailed Implementation

[0029] The embodiments of the endoscope involved in this utility model will be described below with reference to the accompanying drawings.

[0030] [First Implementation]

[0031] The endoscope described in this embodiment includes: an operating section for the operator to hold and perform various operations; and an insertion section for insertion into the body cavity of the subject (patient). Illustrations of the operating section and the insertion section are omitted.

[0032] The insertion part is a long strip extending from the front end of the operating part, and from the operating part side (base end side) it includes a flexible soft part, a bending part that can be bent by operating the bending button of the operating part, and a front end.

[0033] The operating section is provided with a treatment device inlet for inserting a treatment device, and the front end of the insertion section is provided with a treatment device outlet for discharging the treatment device. The treatment device inlet and the treatment device outlet are connected via a treatment device insertion channel.

[0034] The following describes the tip of the endoscope. Figure 1 and Figure 2 These are diagrams showing the front end of the endoscope according to the first embodiment of the present invention (exploded perspective view and perspective sectional view, respectively).

[0035] like Figure 1 As shown, the front end portion 10 includes: a frame portion 12 forming an outer wall and an inner partition of the front end portion 10; and a front cover 14, which is mounted on the front end of the frame portion 12 and forms part of the outer wall of the front end portion 10. The frame portion 12 and the front cover 14 are formed, for example, of a metal material such as stainless steel.

[0036] The frame portion 12 includes: an illumination window 20 for illuminating the subject body with illumination light directed to the frame portion 12 by a light source not shown; an observation window 22 for taking pictures of the subject body using an imaging element housed in the frame portion 12; and a gas or water delivery nozzle 24 for delivering gas or liquid to the observation window 22.

[0037] like Figure 2 As shown, a standing platform receiving portion 34 for accommodating the standing platform 30 is formed in the frame portion 12.

[0038] The standing platform 30 is made of a metal material such as stainless steel and is mounted so that it can rotate freely around the axis of rotation 72 (described later). In the following description, the direction along the axis of rotation 72 is defined as the X direction, the direction in which the standing platform 30 stands up and falls down is defined as the Z direction (vertical direction), and the direction orthogonal to the ZX direction is defined as the Y direction. Here, the +Z direction and the -Z direction correspond to the first orientation and the second orientation, respectively.

[0039] like Figure 1 As shown, an opening 16 is formed in the frame portion 12. The opening 16 is formed in the +Z direction (first direction, upward direction) and has a component in the direction (Z direction) orthogonal to the opening direction of the treatment device outlet 58. The treatment device, which is led from the treatment device insertion channel 50 to the treatment device outlet 58, is guided by the standing table 30 towards the opening 16 in the standing table receiving portion 34 and led out from the opening 16 into the subject body.

[0040] Furthermore, a partition wall 60 is provided in the frame portion 12 to form the wall surface of the +X side of the stand-up table receiving portion 34, and a through hole 62 is formed on the partition wall 60 through the side on which the wire insertion channel 64 is disposed and the side on which the stand-up table 30 is disposed.

[0041] The lifting rod 70 has a rotating shaft 72 formed by a bend at one end, and an operating line 74 is connected to the other end. The rotating shaft 72 is inserted through a through hole 62 formed in the partition wall 60, and is inserted into the rotating shaft insertion hole 32 of the lifting platform 30 in a manner that prevents relative rotation. The lifting rod 70 and the rotating shaft 72 function as power transmission components. Hereinafter, the rotating shaft 72 when inserted into the rotating shaft insertion hole 32 of the lifting platform 30 will also be referred to as the rotating shaft 72 of the lifting platform 30.

[0042] The operating cable 74 is inserted into the cable insertion channel 64 formed on the -Y side (base end side) of the frame portion 12, and is connected to the upright operating lever (not shown) of the endoscope's operating part. Figure 1 As shown, the wire insertion channel 64 and the standing platform 30 are arranged on opposite sides of each other, separated by a partition 60.

[0043] An outlet 58 for processing equipment is formed in the upright platform receiving section 34. For example... Figure 2 As shown, the instrument outlet 58 opens to the +Y side (front end side) of the stand-up table receiving portion 34. As described above, the instrument outlet 58 communicates with the instrument inlet of the operating portion via the instrument insertion channel 50, which is inserted into the insertion portion of the endoscope. The instrument outlet 58 also serves as a liquid supply port for supplying cleaning or disinfecting liquid to the stand-up table 30.

[0044] When observing or treating a patient, the front end 10 is inserted into the patient, and the treatment instrument inserted through the treatment instrument inlet is led out through the treatment instrument outlet 58 to the standing table receiving part 34. By operating the standing operation lever of the operating part, the operator can move the standing table 30 between the standing state (standing position) and the lying state (lying position), thereby changing the direction (leading angle) of the treatment instrument leading out of the standing table 30.

[0045] On the other hand, when cleaning or disinfecting the endoscope, a cleaning or disinfecting liquid is injected through the instrument inlet of the operating section. The cleaning or disinfecting liquid is supplied from the instrument outlet 58 to the stand-up table housing 34 through the instrument insertion channel 50. A liquid outlet 36 is provided in the stand-up table housing 34, opening towards the -Z side (second orientation, downward orientation). Depending on its location, the liquid outlet 36 is formed to penetrate either or both of the frame portion 12 and the front cover 14 of the front end portion 10. The cleaning or disinfecting liquid is discharged to the outside of the stand-up table housing 34 through the liquid outlet 36.

[0046] In addition, Figure 2In the example shown, one liquid outlet 36 is provided downward on the opposite side (+Y side, front end side) of the standing platform receiving portion 34 relative to the treatment device outlet 58, which also serves as a liquid supply outlet. However, the arrangement, number, and orientation of the liquid outlet 36 are not limited to this example. Multiple liquid outlets 36 may be provided, or they may be arranged diagonally relative to the treatment device outlet 58, depending on the shape of the standing platform receiving portion 34.

[0047] like Figure 2 As shown, an enlarged diameter portion 56 is formed on the +Y side (front end side) of the treatment device insertion channel 50, which expands towards the treatment device outlet 58. The diameter of the enlarged diameter portion 56 is largest at the treatment device outlet 58. Furthermore, the enlarged diameter portion 56 is not formed by chamfering the treatment device insertion channel 50, i.e., cutting off the corner portion between the treatment device insertion channel 50 and the standing table receiving portion 34, but is formed as described later, preferably in a manner that satisfies conditions A and B.

[0048] The portion of the insertion channel 50 on the -Y side (operating part side, base end side) of the treatment device, excluding the enlarged diameter portion 56 (insertion portion 52), that connects to the enlarged diameter portion 56 is designated as the connecting portion 54. In the connecting portion 54, the diameter of the enlarged diameter portion 56 is equal to the diameter of the insertion portion 52. Furthermore, in... Figure 2 In the example shown, the diameter of the enlarged portion 56 is the smallest in the connecting portion 54. Additionally, in Figure 2 In the example shown, the enlarged diameter portion 56 is approximately conical in shape (oblique conical shape), but the shape of the enlarged diameter portion 56 is not limited to... Figure 2 The example shown.

[0049] By providing this enlarged diameter section 56, the treatment device outlet 58, which also serves as a liquid supply port, is enlarged compared to the treatment device insertion channel 50, thus enabling the supply of cleaning or disinfecting liquid to a wide range of the standing table receiving section 34.

[0050] Furthermore, in this embodiment, the front end portion 10 is preferably configured in a manner that satisfies either condition A or B below.

[0051] (Condition A)

[0052] In the cross-section of the treatment device insertion channel 50 along the plane (YZ plane) defined by the Y direction (the opening direction of the treatment device outlet 58) and the Z direction (vertical direction), the extension line of the bottom of the expanded diameter portion 56 on the -Z direction (second direction) side is designated as EX1. Figure 2As shown, the enlarged diameter portion 56 is formed such that the extension line EX1 of its bottom is located further in the -Z direction (second direction) than the rotating shaft 72 (rotating shaft insertion hole 32) of the standing table 30. This allows for the supply of cleaning or disinfecting liquid to, for example, the connection point between the rotating shaft 72 and the rotating shaft insertion hole 32 when the rotating shaft 72 is inserted into the rotating shaft insertion hole 32 of the standing table 30 (including the gap between the rotating shaft 72 and the rotating shaft insertion hole 32), the sealing member (e.g., an O-ring) provided between the through hole 62 of the partition wall 60 and the rotating shaft 72, or the underside surface of the standing table 30.

[0053] (Condition B)

[0054] In the cross-section of the treatment device insertion channel 50 along the YZ plane, the extension line of the bottom of the connecting part 54 in the -Z direction (second direction) is defined as EX2. For example... Figure 2 As shown, the positions of the insertion part 52 and the standing platform 30 are adjusted so that the extension line EX2 intersects the treatment device guide surface 30G of the standing platform 30. That is, the treatment device guide surface 30G is located on the extension line EX2, or at a position slightly further from the extension line EX2 in the -Z direction (second direction). Therefore, even when the enlarged diameter part 56 is provided, the treatment device can be guided smoothly.

[0055] Figure 3 This is a cross-sectional view showing a comparison between the endoscope according to the first embodiment of this utility model and the endoscope according to the comparative example.

[0056] like Figure 3 As shown, in the endoscope tip 10C of the comparative example, unlike the instrument insertion channel 50C, a liquid supply channel 40C is provided for supplying liquid for cleaning or disinfection in order to supply liquid to the underside of the stand. To provide this liquid supply channel 40C, the Z-direction dimension of the tip 10C of the comparative example is increased.

[0057] In contrast, the endoscope tip 10 of this embodiment has an enlarged diameter section 56, which eliminates the need for a dedicated liquid supply channel 40C, allowing for the supply of cleaning or disinfecting liquid to the underside of the stage 30. Therefore, according to this embodiment, without enlarging the diameter of the endoscope tip 10, the stage housing 34 can be reliably cleaned or disinfected with a simpler structure.

[0058] (A variation of the enlarged diameter section)

[0059] Furthermore, the enlarged diameter portion 56 in this embodiment is designed to be approximately conical (frustum-shaped), but the present invention is not limited to this. Also, the enlarged diameter portion 56 may be non-axially symmetrical, and the axis (central axis) of the enlarged diameter portion 56 may be offset relative to the axis AX of the insertion portion 52 (for example, it may be displaced vertically).

[0060] Figure 4 This is a diagram showing a modified example of the expanded diameter section.

[0061] This is an example where the expanded diameter portion 56a involved in Modification Example (a) is a non-axisymmetric shape. Specifically, the expanded diameter portion 56a involved in Modification Example (a) is a slanted conical surface shape, but it can also be a non-axisymmetric shape other than this.

[0062] In modified example (a), for example, the slope of the axis AXa of the enlarged diameter portion 56a with an oblique conical surface shape can be adjusted according to the positional relationship between the insertion portion 52 of the treatment device insertion channel 50 and the rotation axis 72 (rotation axis insertion hole 32) of the standing platform 30 (for example, it can be tilted towards the rotation axis 72 of the standing platform 30). Thus, similarly to the above embodiment, the extension line EX1a of the longer main generatrix of the enlarged diameter portion 56a can be positioned further towards the -Z direction (second direction) than the rotation axis 72 of the standing platform 30 (condition A).

[0063] For example, consider the following situation: due to limitations such as the arrangement of the components of the front end portion 10 or the shape of the standing platform 30, it is difficult to meet conditions A and B in the design of the axisymmetric expansion portion 56. Even in this case, by adopting an expansion portion 56a with a non-axisymmetric shape, conditions A and B can be met, and the design freedom of the front end portion 10 is increased.

[0064] In variations (b) and (c), the cross-sections of the expanded diameter portions 56b and 56c in the YZ direction become curved surfaces. Here, for example, a surface of revolution, a parabola, or a hyperboloid can be considered as the shape of the expanded diameter portions 56b and 56c.

[0065] In variations (b) and (c), the cross-sectional shape becomes a curve, but in this case, the extension lines of the bottom of the expanded diameter portions 56b and 56c can be set as tangents EX1b and EX1c in the bottom cross-section of the expanded diameter portions 56b and 56c.

[0066] Furthermore, in modifications (b) and (c), depending on the positional relationship between the insertion portion 52 of the treatment device insertion channel 50 and the rotation axis 72 (rotation axis insertion hole 32) of the standing platform 30, the central axes of the enlarged portions 56b and 56c can be offset relative to the central axis AX of the insertion portion 52, or they can be tilted. Moreover, the enlarged portions 56b and 56c can also be provided as non-axisymmetric shapes.

[0067] As shown in variations (a) to (c), since the enlarged diameter portions (56a, 56b and 56c) can be selected based on the positional relationship between the insertion portion 52 of the treatment device insertion channel 50 and the rotation axis 72 (rotation axis insertion hole 32) of the standing platform 30, the design freedom of the front end portion 10 is increased.

[0068] [Second Implementation]

[0069] Figure 5 This is a cross-sectional view showing the front end of the endoscope according to the second embodiment of the present invention. Figure 5 The image shows the state of the standing platform 30A in the standing position.

[0070] The standing platform 30A according to this embodiment includes a first surface 30G1 and a second surface 30G2 facing different directions from each other. The first surface 30G1 and the second surface 30G2 are also referred to as liquid guiding surfaces. By providing the first surface 30G1 and the second surface 30G2, the cleaning or disinfecting liquid supplied from the treatment device outlet 58 can flow towards both the opening 16 side and the rotating shaft 72 (rotating shaft insertion hole 32) side.

[0071] like Figure 5 As shown, when the standing platform 30 is in the standing position, the first surface 30G1 and the second surface 30G2 are located on the inner (-Z) side of the opposite region facing the treatment device outlet 58. The first surface 30G1 is formed obliquely upward relative to the axis AX of the insertion portion 52 of the treatment device insertion channel 50, and the second surface 30G2 is formed obliquely downward relative to the axis AX of the insertion portion 52 of the treatment device insertion channel 50. That is, the first surface 30G1 is inclined toward the opening 16 side of the standing platform receiving portion 34, so that liquid in contact with the first surface 30G1 can be guided to the opening 16 side of the standing platform receiving portion 34. Furthermore, the second surface 30G2 is inclined toward the rotation axis 72 side of the standing platform 30A, so that liquid in contact with the second surface 30G2 can be guided to the rotation axis 72 side of the standing platform 30A.

[0072] According to this embodiment, by providing liquid guiding surfaces (first surface 30G1 and second surface 30G2) on the standing platform 30A, the cleaning or disinfection of the standing platform receiving portion 34 can be performed more reliably.

[0073] Furthermore, the shape of the liquid guiding surface is not limited to Figure 5 The example shown. The liquid guiding surface may also include multiple surfaces whose direction of guiding liquid is adjusted according to the configuration of the components of the front end 10. For example, for components that become obstacles to liquid flow, multiple liquid guiding surfaces capable of guiding liquid may be included in the region opposite to the outlet 58 of the disposal device.

[0074] Furthermore, in the above embodiments, the diameter-expanding portion 56 expands in both ±Z directions (up and down directions), but it may also expand only in the -Z direction (the second direction).

[0075] Furthermore, in the above embodiments, the standing platform 30 is operated via the standing rod 70, but the present invention is not limited to this. For example, the above embodiments can also be applied to endoscopes of the type that do not have a partition 60 and directly connect the operating line 74 to the standing platform 30 or other types of endoscopes (e.g., Japanese Patent Application Publication No. Hei 11-299728, Japanese Patent Application Publication No. 2012-040258 and International Publication No. 2021 / 033641).

Claims

1. An endoscope, characterized in that, The endoscope has the following features: The front end has a support platform for receiving the support platform; Erecting platform, disposed in the erecting platform receiving portion; and The treatment device insertion channel is connected to the treatment device outlet that opens into the upright platform receiving section. The treatment device insertion channel has an enlarged section that expands towards the treatment device outlet.

2. The endoscope according to claim 1, characterized in that, The endoscope has a cable insertion channel for inserting an operating cable. The cable insertion channel and the standing platform are located on opposite sides of each other, separated by a partition wall. A through hole is provided on the partition wall, passing between the side where the wire insertion channel is located and the side where the standing platform is located. The endoscope has a power transmission component that is inserted through the through hole, with one end connected to the standing platform and the other end connected to the operating line.

3. The endoscope according to claim 2, characterized in that, The power transmission component includes: A rotating shaft, one end of which is connected to the erecting platform; and An upright rod is located at the other end of the rotating shaft and is connected to the operating line.

4. The endoscope according to claim 1, characterized in that, The endoscope has a cable insertion channel for inserting an operating cable. The erecting platform is rotatably disposed within the erecting platform receiving portion. The operating line is connected to the erecting platform.

5. The endoscope according to any one of claims 1 to 4, characterized in that, The standing platform receiving portion is provided with an opening, which opens toward a first orientation having a component in a direction orthogonal to the opening direction of the processing device outlet. In the cross-section of the enlarged portion along the plane defined by the opening direction of the outlet of the treatment device and the first orientation, the extension line of the bottom of the second orientation side of the enlarged portion, which is opposite to the first orientation, is located closer to the second orientation side than the rotation axis of the erecting platform.

6. The endoscope according to any one of claims 1 to 4, characterized in that, The standing platform receiving portion is provided with an opening, which opens toward a first orientation having a component in a direction orthogonal to the opening direction of the processing device outlet. The erecting platform has a treatment device guide surface that guides the treatment device exiting the treatment device outlet toward the opening. In the cross-section of the treatment device insertion channel along the plane defined by the opening direction of the treatment device outlet and the first orientation, in the connection portion in the treatment device insertion channel connected to the base end side of the enlarged diameter portion, the extension line of the bottom of the second orientation side opposite to the first orientation intersects the treatment device guide surface.

7. The endoscope according to any one of claims 1 to 4, characterized in that, The outlet of the treatment device also serves as a liquid supply port for supplying cleaning or disinfecting liquid to the standing platform.

8. The endoscope according to claim 7, characterized in that, The standing platform has a liquid guiding surface that guides the liquid supplied to the standing platform toward the direction of the rotation axis on which the standing platform is provided.

9. The endoscope according to claim 8, characterized in that, With the standing platform in its upright position, the liquid guiding surface is positioned opposite the outlet of the treatment device.

Images