Endoscopy

Abstract

An endoscope is provided that improves the cleanliness of the area surrounding the erection stage. The endoscope (1) comprises: an insertion part (12) having a treatment instrument insertion channel (82); a distal body (36); an erection stage receiving part (62) provided on the distal body (36) and opening in a first direction; a treatment instrument outlet (80) opening inside the erection stage receiving part (62) and communicating with the treatment instrument insertion channel (82); and an erection stage (60), which, in the erected position, communicates with the treatment instrument outlet (82). 80) The inner side of the opposing area has a first surface (64) and a second surface (66). The first surface (64) is inclined toward the opening (58) of the standing platform receiving part (62) in the direction of the axis (82A) of the treatment device insertion channel (82). The second surface (66) is inclined toward the side of the standing platform receiving part (62) opposite to the opening (58) in the direction of the axis (82A) of the treatment device insertion channel (82).

Description

[0001] This application is a divisional application of the invention patent application filed on December 20, 2018, with application number 201880084475.X and invention title "Endoscope". Technical Field

[0002] The present invention relates to an endoscope, and more particularly to an endoscope having a standing stage for raising a treatment instrument extended from an opening. Background Technology

[0003] Previously, there were endoscopes in which the following features were known: the end part of the endoscope, which is inserted into the body cavity, has a standing platform and a standing platform receiving part, the standing platform allows the instrument insertion channel to be opened and the instrument being discharged from the instrument discharge part of the end part to be stood up, and the standing angle of the standing platform can be changed to adjust the discharge direction of the instrument.

[0004] For example, Patent Document 1 describes an endoscope in which a standing platform is provided in the instrument outlet, a vertical rod is connected to the standing platform via a rotating shaft, and an operating line is connected to the vertical rod. The operating line is pushed and pulled by the operation of an operating part connected to the base end of the insertion part.

[0005] Previous technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2005-287593 Summary of the Invention

[0008] The technical problem to be solved by the invention

[0009] Endoscopes inserted into a patient's body cavity require cleaning each time. In duodenoscopes equipped with a standing stage, the end cap is designed for easy cleaning, ensuring cleanliness around the standing stage by removing the end cap. However, in cases such as ultrasonic endoscopes, where an ultrasonic transducer is located at the end and a liquid-tight structure of the transducer is required, a removable end cap is sometimes not feasible. In such cases, cleaning around the standing stage can only be performed through the opening in the standing stage housing using cleaning tools such as brushes and syringes, necessitating improved cleanliness of the back of the standing stage.

[0010] Furthermore, when cleaning the endoscope, the medication is injected from the operating section side and released from the treatment device outlet at the end to the stand-up table receiving section. However, when the stand-up table is located in front of the treatment device outlet (the side where the medication is released), the medication that comes into contact with the stand-up table leaks directly from the opening to the outside of the endoscope. Therefore, it is required to improve the cleanability around the rotation axis of the stand-up mechanism of the stand-up table.

[0011] The present invention was made in view of the following circumstances, and its object is to provide an endoscope that can improve the cleanability of the endoscope, especially the cleanability of the erection mechanism.

[0012] means for solving technical problems

[0013] To achieve the objectives of this invention, the endoscope according to this invention comprises: an insertion portion having a treatment instrument insertion channel; a distal body disposed at the distal end of the insertion portion; a standing platform receiving portion disposed on the distal body and opening in a first direction perpendicular to the axial direction of the distal body; a treatment instrument outlet opening inside the standing platform receiving portion and communicating with the treatment instrument insertion channel; and a standing platform disposed inside the standing platform receiving portion and rotatably disposed between an upright position and a folded position about a rotation axis. When the standing platform is in the upright position, it has a first surface and a second surface on the inner side of the opposing area opposite to the treatment instrument outlet. When viewed from the rotation axis direction of the standing platform, the first surface is inclined toward the opening side of the standing platform receiving portion relative to the axial direction of the treatment instrument insertion channel, and the second surface is inclined toward the side of the standing platform receiving portion opposite to the opening side relative to the axial direction of the treatment instrument insertion channel.

[0014] In one preferred embodiment of the present invention, the first and second surfaces are surfaces that constitute the surface of the standing platform when projected onto a surface orthogonal to the axial direction of the insertion channel of the treatment device while the standing platform is in the standing position. These surfaces are disposed inside the region where the treatment device outlet is formed.

[0015] In one preferred embodiment of the present invention, the second surface is disposed on the outside of the opposing area when the erected platform is in the collapsed position.

[0016] In one preferred embodiment of the present invention, when viewed from the rotation axis direction of the erecting platform and with the erecting platform in a collapsed position, the second surface is disposed on the end side in the axial direction of the end body, which is closer to the rotation axis.

[0017] In one preferred embodiment of the present invention, the end body has a cleaning communication hole, which is formed by penetrating the bottom wall portion of the stand-up accommodating portion on the side opposite to the opening side.

[0018] In one preferred embodiment of the present invention, the end body has a countersunk portion around the cleaning communication hole, the countersunk portion being recessed in such a way that a syringe for supplying cleaning fluid to the stand-up table receiving portion can be inserted.

[0019] In one preferred embodiment of the present invention, the end body has an observation window, which is positioned in the first direction at the opening side of the stand-up table receiving portion when the end body is projected onto a plane orthogonal to the axial direction of the end body.

[0020] In one preferred embodiment of the present invention, the observation window is disposed on the base end side in the axial direction of the end body, which is further from the rear end portion than the support platform receiving portion.

[0021] In one preferred embodiment of the present invention, the observation window is disposed offset from the support accommodating portion toward a second direction perpendicular to the first direction.

[0022] A preferred embodiment of the present invention is that an ultrasonic transducer having a plurality of ultrasonic transducers is provided on the end side of the end body.

[0023] Invention Effects

[0024] According to the endoscope of the present invention, the cleaning fluid released from the treatment instrument outlet can be induced to flow toward the opening side of the stand-up stage and the rotation axis side of the stand-up stage via the stand-up stage, thus enabling reliable cleaning of the stand-up mechanism (rotation axis). Attached Figure Description

[0025] Figure 1 This is an overall view of the ultrasonic endoscope of the present invention.

[0026] Figure 2 It is a perspective view showing the appearance of the end portion of the insertion part.

[0027] Figure 3 This is a top view (or top view) showing the appearance of the end portion of the insertion part.

[0028] Figure 4 This is a side sectional view of the end portion of the insertion part.

[0029] Figure 5 It is along Figure 3 The sectional view along line 5-5.

[0030] Figure 6 This is a side sectional view of the end portion of the erecting platform in the erected position.

[0031] Figure 7 This is a side sectional view of the erected platform in its collapsed position.

[0032] Figure 8 It is a diagram illustrating the positional relationship between the outlet of the treatment equipment and the standing platform.

[0033] Figure 9 This is a bottom view of the end of the insertion part.

[0034] Symbol Explanation

[0035] 1-Endoscope, 10-Operating section, 12-Insertion section, 14-Universal plug cord, 16-Angle button, 18-Erect operating lever, 20-Air / water supply button, 22-Suction button, 24-Disposal instrument inlet, 30-Soft section, 32-Bend section, 34-End section, 36-End section body, 38-Axis of the end section body, 40-Base, 42-Extension, 44-Observation window, 44A-Centerline of the observation window, 45-Axis of the observation window, 46L, 46R-Illumination window, 48-Air / water supply nozzle, 50-Ultrasonic transducer, 52-Ultrasonic transceiver surface, 58-Opening, 60 - Erecting platform, 60A- Centerline of the erecting platform, 62, 62A- Erecting platform receiving part, 64, 64A, 64B- First surface, 65- Branch point, 66, 66A, 66B- Second surface, 68- Erecting wall part, 72- Observation component forming surface, 78- Bottom wall part, 80, 80A- Handling device outlet, 81- Imaginary line, 82- Handling device insertion channel, 82A- Axis of the handling device insertion channel, 83, 87- Imaginary surface, 84- Cleaning connecting hole, 86, 86A- Signal cable, 88- Cover, 89, 89A- Cable insertion hole, 90- Countersunk part, 92- Rotation shaft. Detailed Implementation

[0036] The endoscope involved in this invention will now be described with reference to the accompanying drawings.

[0037] (Endoscope)

[0038] Figure 1 This is an overall view of the endoscope 1 using the present invention. Furthermore, the following description uses an ultrasonic endoscope as an example, but the present invention can also be applied to endoscopes other than ultrasonic endoscopes. That is, the present invention can be applied to any endoscope having a stage and a standing mechanism.

[0039] The endoscope 1 in this figure consists of an operating part 10 for the operator to hold and perform various operations, an insertion part 12 for insertion into the patient's body cavity, and a universal plug 14. The endoscope 1 is connected via the universal plug 14 to system components such as a processor device and a light source device (not shown) that constitute the endoscope system.

[0040] The operation unit 10 is equipped with various operating components operated by the practitioner, such as a bend button 16, an upright operating lever 18, an air / water supply button 20, and a suction button 22, which will be described later.

[0041] Furthermore, the operation unit 10 is provided with a treatment device inlet 24, which allows the treatment device to be inserted into the treatment device insertion channel in the insertion unit 12.

[0042] The insertion part 12 extends from the end of the operation part 10 and is formed as a narrow and elongated strip.

[0043] Furthermore, the insertion portion 12 is composed of a flexible portion 30, a curved portion 32 and a terminal portion 34 in sequence from the base end side to the terminal end side.

[0044] The flexible portion 30 occupies most of the area starting from the base end of the insertion portion 12 and has flexibility to bend in any direction. When the insertion portion 12 is inserted into the body cavity, the flexible portion 30 bends along the insertion path into the body cavity.

[0045] The bending part 32 is configured to bend in the up-down and left-right directions by rotating the bending knob 16 of the operating part 10. By bending the bending part 32, the end part 34 can be oriented in the desired direction.

[0046] For reference Figures 2 to 4 As will be described in detail later, the end portion 34 includes an ultrasonic transducer 50 having multiple ultrasonic transducers and an end portion body 36 connected to the base end side of the ultrasonic transducer 50. Furthermore, an erecting platform receiving portion 62 is provided on the end portion body 36, and the erecting platform receiving portion 62 has an opening 58 opening in a first direction perpendicular to the axis 38 of the end portion body 36. Moreover, a treatment device outlet 80 is provided on the end portion body 36, which opens into the erecting platform receiving portion 62 and leads out a treatment device. Additionally, an erecting platform 60 is provided inside the erecting platform receiving portion 62 to change the leading direction of the treatment device leading out from the treatment device outlet 80. The axis 38 of the end portion body 36 refers to the direction perpendicular to the axis 38 of the end portion body 36. Figure 1 The line that is consistent with or parallel to the axis of the long side of the insertion part 12.

[0047] Figure 1 The universal plug cord 14 shown internally contains a cable, a light conductor, and a fluid hose. A connector (not shown) is provided at one end of the universal plug cord 14. This connector is connected to a predetermined system structure device, including a processor device and a light source device, which constitutes the endoscope system. The system structure device supplies the endoscope 1 with the power, control signals, illumination light, liquids, and gases required for operating the endoscope 1. Furthermore, observation image data acquired by the imaging unit and ultrasound image data acquired by the ultrasound transducer are transmitted from the endoscope 1 to the system structure device. The observation image and ultrasound image transmitted to the system structure device are displayed on a monitor for observation by the operator.

[0048] (Structure of the end portion)

[0049] Next, the structure of the end portion 34 of the insertion portion 12 will be described. Figure 2 This is a perspective view showing the appearance of the end portion 34 of the insertion part. Figure 3 It is a top view (or top view). Figure 4 It is a side sectional view.

[0050] The end portion 34 has an end portion body 36 forming an outer wall and an inner partition, and each constituent component disposed on the end portion body 36 is accommodated and held in a receiving portion provided by the end portion body 36.

[0051] Although details are omitted, a portion of the end body 36 can be detached as a separating block, allowing each component to be assembled into a designated receiving portion while the separating block is removed. After assembling each component into the receiving portion, the separating block is installed on the end body 36, and each component is held and fixed to the end portion 34 within the receiving portion.

[0052] The end body 36 is made of an insulating material, such as a resin material like methacrylic resin and polycarbonate.

[0053] like Figures 2 to 4 As shown, the end portion 34 is composed of a base portion 40 that constitutes the end portion body 36 and an extension portion 42 that extends from the base portion 40 toward the end side and holds the ultrasonic transducer 50.

[0054] That is, a convex ultrasonic transducer 50 is disposed in the extension 42. The convex ultrasonic transducer 50 has an ultrasonic transceiver surface 52, which is formed by arranging the ultrasonic transducer for transmitting and receiving ultrasonic waves in a curved shape along the axis 38 of the end body 36. Data for generating ultrasonic images of tissues in the body is acquired through this ultrasonic transducer 50.

[0055] like Figure 2 and Figure 3 As shown, the end body 36 is provided with an observation window 44, lighting windows 46L and 46R, an air and water supply nozzle 48, an opening 58 for the discharge treatment device, and a vertical wall 68 provided around the opening 58.

[0056] An opening 58 is provided at the base 40 of the end body 36, through which the processing instrument extends to the scanning range of the ultrasonic waves of the ultrasonic transducer 50. The opening 58 is formed to face the upright receiving portion 62 provided on the end body 36, and to open in a first direction orthogonal to the axis 38 of the end body 36. Furthermore, as... Figure 2 As shown, a portion of the opening 58 may be formed obliquely downward toward the end side, or the entire opening 58 may be formed obliquely. In this specification, if... Figure 4As indicated by arrow A, "first direction" refers to the direction perpendicular to the axis 38 of the end body 36, and in which the opening 58 of the standing platform receiving portion 62 is formed. Furthermore, as... Figure 2 As shown, "second direction" refers to the direction indicated by arrow B, which is perpendicular to the axis 38 direction of the end body 36 and the first direction indicated by arrow A. Furthermore, "one side of the first direction" refers to the side where the opening 58 opens. In this specification, the side of the first direction is sometimes referred to as "upper" or "above," and the other side of the first direction is sometimes referred to as "lower" or "below."

[0057] like Figure 4 As shown, a treatment device outlet 80 with an internal opening in the standing platform receiving portion 62 is disposed on the base end side of the standing platform receiving portion 62. The treatment device outlet 80 is connected to the treatment device insertion channel 82 inserted into the insertion portion 12 and the treatment device inlet 24 of the operation portion 10 (see reference). Figure 1 ) connection. Therefore, when an endoscope is inserted into a body cavity for treatment or observation, the treatment instrument inserted through the instrument inlet 24 exits through the instrument outlet 80 (reference). Figure 4 The cleaning fluid is discharged into the standing table receiving section 62. Furthermore, when cleaning the endoscope, the cleaning fluid is injected through the instrument inlet 24, thereby releasing the cleaning fluid into the standing table receiving section 62 through the instrument insertion channel 82.

[0058] An upright platform 60 is positioned in front of the treatment device outlet 80 of the upright platform receiving section 62. The upright platform 60 is rotatably mounted about a rotation axis 92 between an upright position and a folded position. The upright platform 60 is made of a metal material such as stainless steel and has a concave guide surface 60a on its upper surface side, which curves upward from the base end side of the end body 36 toward the end side. The treatment device exiting from the treatment device outlet 80 is led upward along the guide surface 60a in the direction of the axis 38 of the end body 36 (e.g., the longitudinal axis direction of the insertion part 12) and exits from the opening 58 on the upper side of the upright platform receiving section 62 to the outside.

[0059] Furthermore, 60 platforms were erected. Figure 1 The operation of the lifting lever 18 shown is to rotate around the rotation axis 92 and perform the lifting action. By performing the lifting action of the lifting platform 60, the lifting angle from the collapsed state can be adjusted, and the discharge direction (discharge angle) of the treatment device discharged from the opening 58 can be changed.

[0060] in addition, Figure 4 The treatment device insertion channel 82 shown is also connected to a suction channel (not shown), through operation Figure 1 The suction button 22 can also draw in bodily fluids from the opening 58.

[0061] An observation window 44 is disposed on the observation member forming surface 72 located on the base end side of the stand-up table receiving portion 62. Inside the observation window 44 is a camera system unit, which integrates the imaging optical system constituting the camera unit and the solid-state imaging element. Thus, when light from the processing unit, which forms the field of view of the imaging unit, is received through the observation window 44, this light is imaged onto the solid-state imaging element via the imaging optical system to form an observation image. In other words, the processing unit captures an image using the solid-state imaging element.

[0062] The observation member forming surface 72, equipped with the observation window 44, is a surface having a normal component to the end side in the direction of the axis 38 toward the end body 36. That is, the observation member forming surface 72 is formed as an inclined surface that slopes upward toward the base end side of the end portion 34. By setting the observation member forming surface 72 to have a normal component toward the end side and providing the observation window 44 on the observation member forming surface 72, the position of the treatment device extending from the opening 58 can be brought into the field of view of the observation window 44. Therefore, the treatment device from the opening 58 to the target treatment position can be confirmed using the observation window 44. Alternatively, the observation member forming surface 72 may also be a vertical surface perpendicular to the direction of the axis 38 of the end body 36.

[0063] Illumination windows 46L and 46R are disposed on both sides of the observation member forming surface 72, separated by observation window 44. Light emitting sections constituting the illumination unit are housed inside the illumination windows 46L and 46R. Illumination light transmitted from the light source device connected to the universal plug cord 14 via a light conductor is emitted from the light emitting sections, and this illumination light illuminates the processing section within the field of view of the imaging unit via the illumination windows 46L and 46R.

[0064] Air and water nozzles 48 are disposed on the observation component forming surface 72. Furthermore, through... Figure 1 The operation of the air / water supply button 20, from Figure 2 The air and water supply nozzles 48 spray cleaning fluid, water, or air (hereinafter also referred to as "cleaning fluid") toward the observation window 44 to clean the observation window 44.

[0065] like Figure 4 As shown, in the end body 36, the bottom wall 78 on the side opposite to the side where the opening 58 of the stand-up table receiving portion 62 is located has a cleaning communication hole 84 that connects the stand-up table receiving portion 62 to the outside. By providing the cleaning communication hole 84, cleaning tools such as brushes or syringes can be inserted into the stand-up table receiving portion 62 through the cleaning communication hole 84, thus making it easy to clean the back side and surrounding area of ​​the stand-up table 60.

[0066] Figure 5 It is along Figure 3A cross-sectional view of the end body 36 of line 5-5. Signal cables 86 with cable insertion holes 89 are provided in the end body 36. These signal cables 86 are for... Figure 2 The ultrasonic transducer 50 shown has an ultrasonic transducer (not shown) connected to the system structure via cables, these signal cables 86 from... Figure 1 The insertion part 12 is fitted to the universal plug cord 14. For example... Figure 5 As shown, when projecting the cable insertion hole 89 and the standing platform receiving portion 62 onto the imaginary surface 87 perpendicular to the first direction indicated by arrow A, the cable insertion hole 89 is located in a region 89A different from the region 62A of the standing platform receiving portion 62. That is, when viewed from the front, as... Figure 5 As shown, the cable insertion hole 89 and the standing platform receiving portion 62 are arranged in the second direction. The cable insertion hole 89 is located on one side of the standing platform receiving portion 62 in the second direction (in... Figure 5 (To the right of the central support platform receiving section 62). At this time, the support platform receiving section 62 extends from the center position C of the end body 36 to the other side in the second direction (in... Figure 5 It is configured by offsetting from the center position C to the left.

[0067] Thus, by arranging the cable insertion holes 89 in the second direction of the stand-up table receiving portion 62, the stand-up table receiving portion 62 can be positioned below within the end body 36. By positioning it below, the distance from the cleaning communication hole 84 to the stand-up table 60 can be shortened, and cleaning of the back side and surrounding area of ​​the stand-up table 60 can be easily performed.

[0068] Next, the positional relationship between the opening 58, the support platform accommodating portion 62, and the observation window 44 will be explained. In this embodiment, as... Figure 5 As shown, by placing the stand-up table receiving portion 62 below the end portion body 36, the positional relationship of each component constituting the end portion body 36 can be set as follows.

[0069] like Figure 4 As shown, with the position of the opening 58 as the reference position, the first direction indicated by arrow A ( Figure 4 The observation window 44 (vertical direction) is positioned on the opposite side of the stand-up plinth 62. That is, when the end body 36 is projected onto an imaginary plane orthogonal to the axis 38, the observation window 44 is positioned on the opening side (opening 58 side) of the stand-up plinth 62. Thus, by positioning the observation window 44 above the opening 58, the treatment device can be brought into the observation window 44's field of view at the point where it is extended from the opening 58. Therefore, the treatment device can be guided to the target position, and aiming accuracy can be improved.

[0070] like Figure 3As shown, the second direction positions of the observation window 44 and the support table receiving portion 62 are preferably such that the observation window 44 is offset from the support table receiving portion 62 in the second direction indicated by arrow B. Here, the arrangement of the observation window 44 offset from the support table receiving portion 62 in the second direction means, for example, as... Figure 3 As shown, in a top view, the centerline 44A of the observation window 44 is offset in the second direction, indicated by arrow B, relative to the centerline 60A of the standing platform 60. With this structure, even when the standing platform 60 is erected and the treatment device extends from the opening 58, the observation view of the observation window 44 is prevented from being obstructed by the treatment device and the standing platform 60, and the treatment position can be reliably confirmed using the observation window 44.

[0071] Figure 6 This is a sectional view of the side of the endoscope with the stand in the upright position. Figure 7 It is a sectional view of the side of the erected platform in the collapsed position.

[0072] In this embodiment, to ensure that the cleaning fluid released from the treatment device outlet 80 flows not only toward the opening side (opening 58 side) but also toward the rotation axis 92 side, the device is configured to include two surfaces, a first surface 64 and a second surface 66, facing opposite directions. When the standing platform 60 is in the upright position, the first surface 64 and the second surface 66 are located inside the opposing region opposite the treatment device outlet 80. That is, as... Figure 6 As shown, when the first surface 64 and the second surface 66 are projected onto an imaginary surface 83 orthogonal to the axis 82A of the treatment device insertion channel 82, and the standing platform 60 and the treatment device outlet 80 are in the standing position, at least a portion of region 64A of the first surface 64 and at least a portion of region 66A of the second surface 66 are disposed inside region 80A of the treatment device outlet. By configuring the first surface 64 and the second surface 66 in this way, when the standing platform 60 in the standing position is viewed from the treatment device outlet 80, both surfaces of the first surface 64 and the second surface 66 are positioned at the viewpoint from the treatment device outlet 80. With the standing platform 60 in the standing position, the first surface 64 and the second surface 66 are positioned inside the opposing region opposite the treatment device outlet 80, thereby allowing the cleaning fluid released from the treatment device outlet 80 to contact the first surface 64 and the second surface 66.

[0073] Furthermore, when viewing the standing platform 60 from the direction of the rotation axis, the first surface 64 is inclined toward the opening 58 of the standing platform receiving portion 62 relative to the axis 82A of the treatment device insertion channel 82. The second surface 66 is inclined toward the side of the standing platform receiving portion 62 opposite to the opening 58 relative to the axis 82A of the treatment device insertion channel 82. That is, when the standing platform 60 is in the standing position, the first surface 64 is formed obliquely upward relative to the axis 82A of the treatment device insertion channel 82, and the second surface 66 is formed obliquely downward relative to the axis 82A of the treatment device insertion channel 82. By inclining the first surface 64 toward the opening 58 of the standing platform receiving portion 62, it is possible to... Figure 6 As indicated by arrow C, the cleaning fluid that comes into contact with the first surface 64 can be guided to the opening 58 side. Furthermore, by tilting the second surface 66 towards the side opposite to the opening 58 side of the support platform 62, that is, the side opposite to the first surface 64, it is possible to... Figure 6 As indicated by arrow D, the cleaning fluid that comes into contact with the second surface 66 can be guided to the side of the rotating shaft 92 and below the standing table receiving portion 62. Therefore, the cleaning fluid released from the treatment device outlet 80 can be supplied to the interior of the standing table receiving portion 62, especially to the lower surface side of the standing table 60.

[0074] Furthermore, when the standing platform 60 is in the collapsed position, the first surface 64 is positioned inside the opposing area of ​​the treatment device outlet 80, and the second surface 66 is positioned outside the opposing area of ​​the treatment device outlet 80. That is, in Figure 7 In this configuration, when the erecting platform 60 and the treatment device outlet 80 are projected onto an imaginary plane 83 orthogonal to the axis 82A of the treatment device insertion channel 82, the region 64B of the first surface 64 and the region 80A of the treatment device outlet 80 are arranged in an overlapping position. Furthermore, the region 66B of the second surface and the region 80A of the treatment device outlet 80 are arranged in different positions. By placing the first surface 64 inside the opposing region and the second surface 66 outside the opposing region, in the collapsed position of the erecting platform 60, the treatment device exiting from the treatment device outlet 80 can be smoothly guided to the first surface 64 of the erecting platform 60. Moreover, even when the erecting platform 60 is moved to the erected or collapsed position while the treatment device is being guided, the direction of the treatment device's exit can be easily changed.

[0075] Figure 8 This diagram illustrates the positional relationship between the treatment device outlet 80 and the standing platform 60. Figure 8 In the diagram, the state of the erected platform 60 in the collapsed position is represented by a solid line, and the state in the erected position is represented by a double-dotted line.

[0076] With the stand 60 in the upright position, the branch point 65, which serves as the boundary between the first surface 64 and the second surface 66, is positioned above an imaginary line 81 extending in the direction of the axis 82A of the treatment device outlet 80 toward the treatment device insertion channel 82. This configuration allows the first surface 64 and the second surface 66 to be positioned inside the opposing area of ​​the treatment device outlet 80 when the stand 60 is in the upright position, and allows the cleaning fluid to contact the first surface 64 and the second surface 66.

[0077] Furthermore, with the standing platform 60 in the upright position, the angle α between the second surface 66 and the axis 82A of the treatment device insertion channel 82 is set to be greater than 90°. As a result, the cleaning fluid in contact with the second surface 66 is induced to the side of the rotating shaft 92, thereby improving the cleaning performance of the rotating shaft 92.

[0078] Furthermore, when the standing platform 60 collapses, the branch point 65 is positioned below the imaginary line 81. Also, the angle β formed by the line connecting the branch point 65 to the center point of the rotation axis 92 and the line parallel to the first direction is 0° or more at the end. With this configuration, the treatment device exiting from the treatment device outlet 80 can be smoothly guided to the first surface 64 of the standing platform 60.

[0079] Furthermore, when the standing platform 60 is in the collapsed position, when viewed from the direction of the rotation axis 92 of the standing platform 60, the second surface 66 of the standing platform 60 is preferably positioned at its end point further along the axis 38 than the rotation axis 92 of the standing platform 60. By positioning the second surface 66 further at its end point than the rotation axis 92 of the standing platform 60, when the standing platform 60 is positioned in the upright position, the second surface 66 can be positioned within the opposing region.

[0080] in addition, Figures 6 to 8 The standing platform 60 shown is formed by direct connection of the first surface 64 and the second surface 66. However, if the first surface and the second surface are located on the inner side of the opposing area opposite to the outlet 80 of the treatment device, with the first surface inclined towards the opening side and the second surface inclined towards the opposite side relative to the axial direction of the insertion channel of the treatment device, then the first surface and the second surface can also be connected via other surfaces. Furthermore, the first surface 64 and the second surface 66 are not limited to planes. Even if either or both of the first surface 64 and the second surface 66 are curved surfaces, as long as the cleaning fluid can be induced in their respective directions, the first surface 64 and the second surface 66 can be formed as smooth and continuous curved surfaces.

[0081] Figure 9This is a bottom view of the end body. As described above, the end body 36 has a bottom wall portion 78 that penetrates the stand-up table receiving portion 62 and connects the stand-up table receiving portion 62 to the outside through a cleaning communication hole 84. Furthermore, a countersunk portion 90 is provided around the cleaning communication hole 84, which is recessed in such a way that a syringe for supplying cleaning fluid can be inserted. By providing the countersunk portion 90, the syringe for supplying cleaning fluid (medication solution) can be fixed in place. Therefore, it is possible to prevent the syringe from shaking when supplying cleaning fluid, and to reliably supply the cleaning fluid to a designated position, such as the stand-up table 60. The syringe can be fixed in such a way that the outer barrel of the syringe does not move within the countersunk portion 90. Furthermore, by inserting a brush through the cleaning communication hole 84, cleaning can be easily performed on the portion opposite to the opening 58 of the stand-up table 60.

[0082] And, as Figure 9 As shown, the end body 36 preferably has a cover 88 that can be attached to and detached from the cleaning communication hole 84. When the insertion part 12 of the endoscope 1 is inserted into the patient's body cavity, the cleaning communication hole 84 is closed by attaching the cover 88 to it, which can prevent dirt from adhering to the stand-up table receiving part 62. Furthermore, when cleaning the stand-up table 60, the back side and its periphery of the stand-up table can be cleaned using a cleaning tool by removing the cover 88 from the cleaning communication hole 84.

[0083] As explained above, according to this embodiment, when the standing platform 60 is erected, the first surface 64 and the second surface 66 constituting the standing platform 60 are arranged in the opposite region of the treatment device outlet 80. The first surface 64 is inclined towards the opening 58 with respect to the axis 82A of the treatment device insertion channel 82, and the second surface 66 is inclined towards the side opposite to the opening 58. As a result, the cleaning fluid released from the treatment device outlet 80 can be guided to the opening side of the standing platform receiving portion 62 and the rotation axis 92 side of the standing platform by the first surface 64 and the second surface 66, thus improving the cleaning performance of the standing mechanism.

[0084] Furthermore, while the above description utilized a convex ultrasonic transducer, the present invention is not limited to convex ultrasonic transducers and can also be applied to radial ultrasonic transducers.

Claims

1. An endoscope comprising: an insertion section provided with a treatment instrument insertion passage; a tip section body provided at a tip of the insertion section; a stand housing section provided on the tip section body and opened to a first direction perpendicular to an axial direction of the tip section body; a treatment instrument guide outlet opened inside the stand housing section and communicating with the treatment instrument insertion passage; and a stand disposed inside the stand housing section and rotatably provided between a standing position and a lying position about a rotation axis, wherein the stand has a first surface and a second surface inside a facing region opposite the treatment instrument guide outlet in a state where the stand is positioned at the standing position, wherein the first surface is disposed inclined to an opening side of the stand housing section with respect to the axial direction of the treatment instrument insertion passage, and the second surface is disposed inclined to a side opposite the opening side of the stand housing section with respect to the axial direction of the treatment instrument insertion passage, and wherein a branch point, which is a boundary between the first surface and the second surface, is disposed above an imaginary line extending from a lower end of the treatment instrument guide outlet to the axial direction of the treatment instrument insertion passage in the state where the stand is positioned at the standing position.

2. The endoscope according to claim 1, wherein the first surface and the second surface are surfaces of the stand disposed inside a region in which the treatment instrument guide outlet is formed when the stand is projected onto a plane orthogonal to the axial direction of the treatment instrument insertion passage in the state where the stand is positioned at the standing position.

3. The endoscope according to claim 1 or 2, wherein the second surface is disposed outside the facing region in a state where the stand is positioned at the lying position.

4. The endoscope according to claim 1 or 2, wherein the second surface is disposed on a tip side of the axial direction of the tip section body than the rotation axis in the state where the stand is positioned at the lying position when viewed from the direction of the rotation axis of the stand.

5. The endoscope according to claim 1 or 2, wherein the tip section body has a cleaning communication hole formed through a bottom wall portion of a side opposite the opening side of the stand housing section.

6. The endoscope according to claim 5, wherein the tip section body has a counterbore portion around the cleaning communication hole, the counterbore portion being recessed in a manner in which a syringe for supplying a cleaning liquid to the stand housing section can be inserted.

7. The endoscope according to claim 1 or 2, wherein the tip section body has an observation window, a position of the first direction of the observation window being disposed on the opening side of the stand housing section when the tip section body is projected onto a plane orthogonal to the axial direction of the tip section body.

8. The endoscope according to claim 7, wherein the observation window is disposed on a proximal end side of the axial direction of the tip section body than the stand housing section.

9. The endoscope according to claim 7, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The observation window is disposed offset from the stand housing toward a second direction perpendicular to the first direction.

10. The endoscope according to claim 1 or 2, wherein An ultrasonic transducer having a plurality of ultrasonic transducers is provided on the distal end side of the distal end portion main body.

11. The endoscope according to claim 1, wherein In a state where the stand is located at the standing position, an angle that the second surface makes with an axis of the treatment instrument insertion passage is an angle greater than 90°.

12. The endoscope according to claim 1, wherein An angle that a line connecting the branch point and a center point of the rotation axis makes with a line parallel to the first direction is 0° or more on the distal end side.

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