Camera for an endoscope

Abstract

A camera for an endoscope includes first and second members that are relatively rotatable about a first axis. The first member has a first rotational sliding surface that extends annularly about the first axis. The second member has a second rotational sliding surface that engages the first rotational sliding surface while being constrained relative to the first member in the direction of the first axis and relatively rotatably slides relative to the first rotational sliding surface about the first axis. The second rotational sliding surface only abuts a portion of the first rotational sliding surface, leaving a portion of the first rotational sliding surface exposed to the exterior.

Description

[0001] This application is a divisional application of the international application PCT / JP2018 / 018989, filed on May 16, 2018, which entered the national phase on January 21, 2020, with application number 201880049168.8 and entitled "Camera for Endoscope", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to an endoscope camera used in an endoscope device to observe the interior of an object, such as the human body and mechanical structures. Background Technology

[0003] Endoscopic devices for observing objects inside the body are generally known, for example, in the medical or industrial fields of human and mechanical structures (e.g., see Patent Document 1).

[0004] The endoscope device described in Patent Document 1 includes an endoscope (optical telescope) that captures and transmits images of the interior of an object, and an endoscope camera (television camera) that holds the endoscope and forms an image based on the object image transmitted from the endoscope. Furthermore, the endoscope is rotatably held about an optical axis disposed inside the endoscope camera.

[0005] Specifically, the endoscopic camera includes a coupler and a main camera unit.

[0006] The coupler has a bottomed cylindrical shape in which the endoscope's eyepiece can be engaged. Furthermore, at the bottom of the coupler, a circular through-hole is formed when viewed from the top, through which the endoscope inserts into both sides.

[0007] The main camera unit includes a housing and an imaging unit housed within the housing. The imaging unit forms an image of an object emitted from the endoscope. A recess extending in a ring around a first axis is formed on the outer surface of the housing.

[0008] Furthermore, the coupler (endoscope) is configured such that the edge portion of the through hole in the coupler engages with the recess of the housing, and the outer surface of the edge portion slides on the inner surface of the recess (hereinafter referred to as the coupler rotation sliding surface), thereby rotating relative to the camera main unit about a first axis.

[0009] Reference List

[0010] Patent documents

[0011] Patent Document 1: JP-A-2000-227559 Summary of the Invention

[0012] Technical issues

[0013] However, in the endoscope camera described in Patent Document 1, the coupler's rotating sliding surface is hidden by the housing's rotating sliding surface and is not exposed to the outside. Therefore, when cleaning the endoscope camera, it is difficult to clean the area between the connector's rotating sliding surface and the housing's rotating sliding surface with a brush. Furthermore, it is difficult to allow cleaning fluid to enter between the connector's rotating sliding surface and the housing's rotating sliding surface. Therefore, cleaning is time-consuming.

[0014] In view of the above problems, the present invention has been realized, and the object of the present invention is to provide an endoscope camera that can reduce cleaning time.

[0015] Solution to the problem

[0016] To address the aforementioned problems and achieve this objective, the endoscope camera according to the present invention includes a first component and a second component capable of rotating relative to each other about a first axis. The first component has a first rotating sliding surface extending annularly about the first axis. The second component engages with the first rotating sliding surface in a state where movement of the second component relative to the first component in the direction of the first axis is restricted. The second component also has a second rotating sliding surface that rotates and slides about the first axis relative to the first rotating sliding surface. The second rotating sliding surface is adjacent only to a portion of the first rotating sliding surface to expose a portion of the first rotating sliding surface to the outside.

[0017] Furthermore, in the endoscopic camera according to the present invention, in the first component, a recess extending in an annular shape is provided, the annulus being centered on a first axis, and the first rotating sliding surface includes the inner surface of the recess; in the second component, a protrusion extending in an annular shape (centered on the first axis) and engaging with the recess is provided, the second rotating sliding surface including the outer surface of the protrusion, and at the distal end of the protrusion, a groove extending in a spiral shape (centered on the first axis) is formed, and portions of the two ends of the groove in the first axial direction are respectively located outside the recess.

[0018] Furthermore, in the endoscopic camera according to the present invention, in the first component, a recess extending in an annular shape (centered on a first axis) is provided, the first rotating sliding surface includes the inner surface of the recess, in the second component, a protrusion is provided, the distal end of the protrusion extending in an arc shape (centered on the first axis) and engaging with the recess, and the second rotating sliding surface includes the outer surface of the protrusion.

[0019] Furthermore, in the endoscopic camera according to the present invention, a plurality of protrusions are provided in the circumferential direction (centered on the first axis).

[0020] Furthermore, the endoscopic camera according to the present invention includes: a coupler that holds an endoscope for capturing and outputting object images; and a camera main unit that includes a housing that rotatably supports the coupler about a first axis and an imaging unit housed in the housing for imaging object images emitted from the endoscope, wherein the first component is the housing and the second component is the coupler.

[0021] Furthermore, the endoscopic camera according to the present invention includes: a coupler that holds an endoscope for capturing and outputting object images; and a camera main unit that includes a housing that rotatably supports the coupler about a first axis and an imaging unit housed in the housing for imaging object images emitted from the endoscope, wherein the first component is the coupler and the second component is the housing.

[0022] Beneficial effects of the invention

[0023] In the endoscope camera according to the invention, the first and second components, consisting of a coupler and a housing, respectively have first and second rotating sliding surfaces. The second rotating sliding surface is adjacent only to a portion of the first rotating sliding surface, so as to expose a portion of the first rotating sliding surface to the outside.

[0024] Therefore, a cleaning brush can be inserted or the cleaning solution can be allowed to reach the second rotating sliding surface through the portion of the first rotating sliding surface exposed to the outside. Furthermore, by rotating the first and second components relative to each other about the first axis while the cleaning brush is inserted or the cleaning solution has entered them, the first and second rotating sliding surfaces can be cleaned easily and effectively.

[0025] Therefore, the endoscope camera according to the present invention has the effect of reducing cleaning time. Attached Figure Description

[0026] Figure 1 This is a diagram illustrating a schematic configuration of an endoscope device according to a first embodiment;

[0027] Figure 2 This is a cross-section showing the connection between the eyepiece and the endoscope camera;

[0028] Figure 3 yes Figure 2 A magnified view of a portion;

[0029] Figure 4 This is a diagram showing the groove portion;

[0030] Figure 5 This is a diagram illustrating a variant 1-1 of the first embodiment;

[0031] Figure 6 This is a diagram illustrating a variant 1-1 of the first embodiment;

[0032] Figure 7 This is a cross-section showing the connection portion between the eyepiece and the endoscope camera according to the second embodiment;

[0033] Figure 8 This is a diagram showing the coupler according to the second embodiment;

[0034] Figure 9 This is a diagram illustrating the effect of the second embodiment;

[0035] Figure 10 This is a diagram illustrating the effect of the second embodiment;

[0036] Figure 11 This is a diagram illustrating a variant 2-1 of the second embodiment;

[0037] Figure 12 This is a diagram illustrating a variant 2-1 of the second embodiment;

[0038] Figure 13 This is a diagram illustrating a variant 2-2 of the second embodiment;

[0039] Figure 14 These are illustrations showing variations 2-3 of the second embodiment;

[0040] Figure 15 This is a diagram illustrating a variant example 3-1 of the first and second embodiments. Detailed Implementation

[0041] In the following description, modes of implementing the invention (hereinafter, embodiments) will be described with reference to the accompanying drawings. Note that the embodiments described below are not intended to limit the invention. Furthermore, in the description of the drawings, similar reference numerals are assigned to similar parts.

[0042] First Embodiment

[0043] Schematic configuration of endoscope device

[0044] Figure 1 This is a diagram showing the configuration of the endoscope device 1 according to the first embodiment.

[0045] Endoscopic device 1 is used in the medical field and is a device for treating living tissue (incisions, etc.) while observing the inside of a living body. For example... Figure 1 As shown, the endoscopic device 1 includes a resection scope 2, an endoscopic imaging device 3, a display device 4, and a control device 5.

[0046] The excision endoscope 2 is a component inserted into the living tissue, capturing an image of the object and treating the living tissue. For example... Figure 1As shown, the resection scope 2 includes a sheath 21, a catheter 22, an endoscope 23, a resection electrode component 24, and a handle portion 25.

[0047] The sheath 21 is a cylindrical part that is inserted into the living body.

[0048] The outer diameter of catheter 22 is smaller than the inner diameter of sheath 21, and it is inserted into sheath 21. Catheter 22 passes through its distal side ( Figure 1 Mounting component 221 (on the left side of the middle) Figure 1 ) Fix it to the sheath 21.

[0049] In the mounting component 221, a water supply inlet 222 is provided to inject the solution into the sheath 21 and supply the solution from the distal end of the sheath 21.

[0050] Endoscope 23 is the component that captures images of the object, and as... Figure 1 As shown, it includes an insertion part 231 and an eyepiece 232.

[0051] The insertion part 231 is fixed inside the conduit 22 and inserted into the sheath 21. Inside the insertion part 231, an optical system consisting of one or more lenses is provided, which collects images of the object.

[0052] The eyepiece 232 is connected to the proximal end of the insertion part 231. Figure 1 (The right end portion of the image). An eyepiece optical system 2321 (see reference) is provided within this eyepiece 232. Figure 2 The eyepiece optical system 2321 emits the image of the object collected by the optical system within the insertion part 231 from the eyepiece 232 to the outside. The eyepiece 232 is formed as a cone with a diameter that increases to the right, and the endoscope imaging device 3 is detachably connected to the diameter-increasing part.

[0053] A light source connector 2323 connecting the light guide 2322 is provided to the eyepiece 232. That is, light supplied from the light source device (not shown) to the light guide 2322 is provided to the insertion part 231 through the eyepiece 232. The light provided to the insertion part 231 is emitted from the distal end of the insertion part 231 and illuminates the interior of the living body. The light illuminating the interior of the living body and reflected in the living body (object image) is emitted from the eyepiece 232 through the optical system inside the insertion part 231 and the eyepiece optical system 2321.

[0054] The ablation electrode component 24 is inserted into the sheath 21 via the mounting component 221, with its distal end extending from the distal end of the sheath 21. The ablation electrode component 24 contacts the living tissue at its end and treats the living tissue with a high-frequency current.

[0055] The handle portion 25 is a component used by doctors to hold the resection scope 2 and to operate the resection electrode component 24. For example... Figure 1As shown, the handle portion 25 includes a retaining ring 251, a slider 252, and a spring member 253.

[0056] The fixation ring 251 is a component that the doctor or other physician uses to hook his / her thumb and secure it to the catheter 22.

[0057] Slider 252 has a conduit 22 inserted therein, configured to move along the conduit 22. Figure 1 Move left and right in the middle.

[0058] like Figure 1 As shown, the cutting electrode component 24 is fixed to the slider 252. That is, as the slider 252 moves, the cutting electrode component 24 moves along the inner edge of the sheath 21. Figure 1 It moves back and forth in the left and right directions.

[0059] Furthermore, a power connector 2522 is provided in the slider 252 for connecting a high-frequency power line 2521 connected to a high-frequency power supply (not shown). This power connector 2522 is electrically connected to the cut-off electrode member 24 via a wire (not shown).

[0060] In addition, a finger hook member 2523 is provided in the slider 252, on which fingers other than the thumb of doctors and others are hooked to move the slider 252 (causing the reciprocating motion of the excision electrode member 24).

[0061] The spring member 253 has a generally U-shaped shape, with one end attached to the retaining ring 251 and the other end attached to the slider 252. The spring member 253 applies pressure to the slider 252 in a direction away from the retaining ring 251.

[0062] That is, the doctor or other personnel hooks his / her finger onto the fixing ring 251 and the finger hook member 2523, and pulls the finger hook member 2523 against the pressure of the spring member 253, thereby... Figure 1 Move slider 252 to the right (in) Figure 1 The electrode component 24 is moved to the right. On the other hand, when the doctor or others remove the finger from the finger hook component 2523, the slider 252 (electrode component 24) is pressed by the spring component 253. Figure 1 Move from the center to the left.

[0063] The endoscopic imaging device 3 is detachably connected to the eyepiece 232 of the resection scope 2 (endoscope 23). The endoscopic imaging device 3 images the object image captured by the endoscope 23 (the object image emitted from the eyepiece 232) and outputs an image signal (raw signal) from the image under the control of the control device 5. The image signal is, for example, a 4K or higher image signal.

[0064] The detailed configuration of the endoscopic imaging device 3 will be described later.

[0065] The display device 4 is composed of a display using liquid crystal, organic EL (electroluminescent) or the like, and displays the observed image based on the video signal from the control device 5 under the control of the control device 5.

[0066] The control device 5 includes a central processing unit (CPU) and centrally controls the operation of the endoscopic imaging device 3, the display device 4, and the light source device (not shown). For example, the control device 5 generates a video signal for display by performing predetermined image processing on the image signal (raw signal) output from the endoscopic imaging device 3. The control device 5 then causes the display device 4 to display the observed image based on the video signal.

[0067] Configuration of endoscopic imaging device

[0068] Next, the configuration of the endoscopic imaging device will be described.

[0069] Figure 2 This is a cross-section showing the connection between the eyepiece 232 and the endoscope camera 6. Figure 3 yes Figure 2 A magnified view of a portion of the image.

[0070] like Figure 1 or Figure 2 As shown, the endoscopic imaging device 3 includes an endoscope camera 6 and a cable 7. Figure 1 ).

[0071] The endoscope camera 6 is a component detachably connected to the eyepiece 232, such as... Figure 1 or Figure 2 As shown. Figure 2 As shown, the endoscope camera 6 includes a housing 8, a coupler 9, a prism 10, a lens unit 11, and an imaging unit 12.

[0072] The housing 8 corresponds to the first component according to the invention. For example... Figure 2 or Figure 3 As shown, the housing 8 includes a housing body 81 and an attachment bushing 82.

[0073] The main body 81 is a housing that accommodates the various components 10 to 12. For example... Figure 2 or Figure 3 As shown, a cylindrical protrusion 811 is provided in the housing body 81, and the protrusion 811 communicates with the inside and outside of the housing body 81.

[0074] In the protrusion 811, such as Figure 2 or Figure 3 As shown, towards Figure 2 and Figure 3The protrusion 812 extending from the left side is provided on the outer peripheral side. The protrusion 812 has an outer diameter that is substantially the same as that of the protrusion 811, is formed into a cylinder with an inner diameter larger than that of the protrusion 811, and is integrally formed with the distal end of the protrusion 811 coaxially. In addition, a threaded groove 813 is formed on the inner peripheral surface of the protrusion 812.

[0075] The attachment bushing 82 is a component that attaches the coupler 9 to the housing 8. For example... Figure 2 or Figure 3 As shown, the attachment bushing 82 includes a bushing body 821 and a protrusion 822.

[0076] The bushing body 821 has an inner diameter substantially the same as that of the protrusion 811, and is formed as a cylinder with an outer diameter substantially the same as that of the extension 812. Furthermore, as... Figure 2 or Figure 3 As shown, a threaded groove 823 is formed on the outer peripheral surface of the bushing body 821.

[0077] The protrusion 822 extends from the outer peripheral surface of the bushing body 821. Figure 2 , Figure 3 The edge portion at the left end extends out and is formed into an annular shape with an outer diameter that is substantially the same as the protrusion 812.

[0078] The housing body 81 and the attachment bushing 82 are secured to each other by engaging threaded grooves 813 and 823. In this state, the central axes of the housing body 81 and the attachment bushing 82 are aligned with each other. The central axis corresponds to the first axis Ax1 according to the invention. Figure 2 , Figure 3 Furthermore, in the attachment bushing 82, an optical device 83, such as a sapphire glass, is fixed. Figure 2 or Figure 3 As shown.

[0079] With the housing body 81 and the attached bushing 82 fixed to each other, the surfaces of the corresponding ends of the protrusions 812 and 822 face each other and face the outer peripheral surface of the bushing body 821, and a recess 84 extending annularly around the first axis Ax1 is provided. Figure 2 , Figure 3 The inner surface of the recess 84 (the surfaces of the corresponding ends of the protrusions 812 and 822 face each other and face the outer peripheral surface of the bushing body 821) corresponds to the first rotary sliding surface according to the invention.

[0080] Coupler 9 is a component corresponding to the second member according to the invention. For example... Figure 2 As shown, the coupler 9 has a bottomed cylindrical shape, in which the eyepiece 232 can be installed.

[0081] like Figure 2 As shown, a pressing part 91 is provided on the inner circumferential surface of the coupler 9.

[0082] The pressing part 91 has elasticity that allows it to move in a direction close to the central axis Ax2 of the coupler 9, and presses the eyepiece 232 against the bottom of the coupler 9 by abutting against the outer circumferential surface of the eyepiece 232 assembled in the coupler 9. In the first embodiment, four pressing parts 91 are provided and are configured to move at a 90° angle around the central axis Ax2. o Rotational symmetry. Note that with the eyepiece 232 installed inside the coupler 9, the optical axis Ax3 of the endoscope 23 ( Figure 2 The optical axis (hereinafter referred to as the endoscope optical axis Ax3) coincides with the central axis Ax2. Furthermore, in Figure 2 On the outer circumferential surface of the eyepiece 232 on the right-hand end, there are directional markings arranged around the entire circumference. Figure 2 The extension portion 2324 extends to the right side. Therefore, when the eyepiece 232 is pressed against the bottom of the coupler 9 by the pressing portion 91, the extension portion 2324 abuts against the bottom. Thus, a space Ar is formed between the optical device 83 and the eyepiece optical system 2321. Figure 2 ).

[0083] Furthermore, when viewed from above, the bottom of the coupler 9 is formed of a circular plate, each plane of which is perpendicular to the central axis Ax2. Additionally, the bottom has a thickness substantially the same as the width of the recess 84. Furthermore, a through-hole 92 is formed in the bottom, passing through its front and rear surfaces, and has a circular shape when viewed from above, with its inner diameter substantially the same as the outer diameter of the bushing body 821. The bottomed cylindrical opening points towards... Figure 2 In the left-hand position, when the edge portion of the through hole 92 engages (fits) with the recess 84, the coupler 9 is attached to the housing 8. In this state, the central axis Ax2 is aligned with the first axis Ax1. Furthermore, the coupler 9 is restricted from moving relative to the housing 8 in the direction of the first axis Ax1, and can rotate relative to the housing 8 about the first axis Ax1 (central axis Ax2).

[0084] Therefore, the endoscope camera 6 is configured to rotate relative to the eyepiece 232 of the endoscope 23 via the coupler 9 about a first axis Ax1 (central axis Ax2, endoscope optical axis Ax3). Furthermore, the endoscope camera 6 is configured such that its center of gravity O ( Figure 1 The endoscope camera 6 rotates about the first axis Ax1 (relative to the rotation center axis of the eyepiece 232) away from the first axis Ax1. The rotation of the endoscope camera 6 is independent of the rotation about the first axis Ax1 of the resection scope 2, and is configured to always remain within the housing body 81 on the optical axis Ax4. Figure 2 The orientation of the optical axis (hereinafter referred to as the internal optical axis Ax4) along the vertical direction (the direction in which the center of gravity O is located below the first axis Ax1).

[0085] The edge portion of the through hole 92 extends circumferentially around the first axis Ax1 and corresponds to the protrusion 93 according to the invention. Figure 2 , Figure 3 Furthermore, the outer surface of the protrusion 93 is the portion that slides on the inner surface of the recess 84, and corresponds to the second rotary sliding surface according to the invention.

[0086] like Figure 2 or Figure 3 As shown, a groove 94 is formed at the distal end of the protrusion 93 (the inner surface of the through hole 92).

[0087] Figure 4 This is a diagram showing the groove portion 94.

[0088] like Figure 4 As shown, the groove 94 extends in a spiral shape at the distal end of the protrusion 93, and the spiral shape surrounds the first axis Ax1 (central axis Ax2). When the coupler 9 is attached to the housing 8, a portion of the two ends 941, 942 of the groove 94 are located outside the recess 84 in the direction of the first axis Ax1.

[0089] That is, when the relative rotation of the housing 8 and the coupler 9 about the first axis Ax1 is stopped, the outer surface of the protrusion 93 (the second rotating sliding surface according to the second embodiment) abuts only a portion of the inner surface of the recess 84 (the first rotating sliding surface according to the invention) due to the groove 94, thereby exposing a portion of the inner surface of the recess 84 to the outside.

[0090] like Figure 2 As shown, prism 10 is positioned on the first axis Ax1 and the internal optical axis Ax4 of the housing, and deflects the object image captured by endoscope 23 to change its direction of travel. Specifically, prism 10 deflects the object image emitted from eyepiece 232 and entering the housing 8 through optical device 83 (the object image traveling along the endoscope optical axis Ax3) to change its direction of travel by 90 degrees. o It travels along the optical axis Ax4 inside the housing.

[0091] like Figure 2 As shown, the lens unit 11 is disposed on the optical axis Ax4 inside the housing. This lens unit 11 consists of one or more lenses and forms an image of the object entering through the prism 10 on the imaging surface of the imaging unit 12. Furthermore, the lens unit 11 is equipped with a control device 5 or an operation unit 13 (… Figure 1 An optical zoom function (not shown) that moves one or more lenses to change the field of view under the control of an optical zoom mechanism (not shown) and a focusing mechanism (not shown) that changes the focus.

[0092] like Figure 2As shown, the imaging unit 12 is disposed on the optical axis Ax4 inside the housing. Under the control of the control device 5, the imaging unit 12 images the object image formed by the lens unit 11. This imaging unit 12 is composed of a sensor chip, which integrally forms an imaging device (not shown) (e.g., CCD (charge-coupled device) and CMOS (complementary metal-oxide-semiconductor)) that receives the object image formed by the lens unit 11 and converts it into an electrical signal, and a signal processing unit (not shown) that outputs an image signal by performing signal processing (A / D conversion, etc.) on the electrical signal (analog signal) from the imaging device, and outputs the A / D converted image signal (raw signal (digital signal)). Note that the aforementioned signal processing unit can be fabricated as a separate unit and is not integrated with the imaging device.

[0093] One end of cable 7 is connected to connector CN1 ( Figure 1 It is detachably connected to the control device 5, and the other end is connected to connector CN2 ( Figure 1 It can be detachably connected to the endoscope camera 6.

[0094] Cable 7 transmits the image signal output from endoscope camera 6 to control device 5, and transmits the control signal, synchronization signal, clock, power, etc. output from control device 5 to endoscope camera 6.

[0095] Note that when transmitting image signals from the endoscope camera 6 via cable 7, the image signals can be transmitted as optical signals or as electrical signals. The same applies to transmitting control signals, synchronization signals, and clock signals from the control device 5 to the endoscope camera 6 via cable 7.

[0096] Furthermore, in cable 7, such as Figure 1 As shown, the operation unit 13 is set up to receive various operations from doctors, etc. (e.g., instructions to adjust the image quality of the observed image (white balance adjustment, brightness adjustment, etc.), instructions to change the viewing angle or focus of the lens unit 11, etc.).

[0097] According to the first embodiment described above, the following effects are produced.

[0098] According to the first embodiment, the endoscope camera 6 includes a housing 8 and a coupler 9. The housing 8 has a recess 84 extending annularly around a first axis Ax1, and the coupler 9 has a protrusion 93 extending annularly around the first axis Ax1 and engaging with the recess 84. Furthermore, at the distal end of the protrusion 93, a groove 94 is formed to extend in a spiral shape around the first axis Ax1, wherein corresponding portions of the two ends 941 and 942 are located outside the recess 84 in the direction of the first axis Ax1. When the relative rotation of the housing 8 and the coupler about the first axis Ax1 is stopped, the outer surface of the protrusion 93 abuts only a portion of the inner surface of the recess 84 due to the groove 94, thereby exposing a portion of the inner surface of the recess 84.

[0099] Therefore, by rotating the housing 8 and coupler 9 relative to each other around the first axis Ax1 while the endoscope camera 6 is immersed in the cleaning solution, the cleaning solution... Figure 3 As indicated by the middle arrow, water flows into the recess 94 from end 941 and exits from end 942 following the recess 94. That is, the portion between the inner surface of the recess 84 and the outer surface of the protrusion 93 can be cleaned easily and effectively. Note that the direction of rotation of the housing 8 and the coupler 9 varies. Figure 3 The middle arrow indicates that the cleaning fluid flows in the opposite direction.

[0100] Therefore, the endoscope camera 6 according to the first embodiment produces the effect of reducing cleaning time.

[0101] Variation 1-1 of the first embodiment

[0102] Figure 5 and Figure 6 This is a diagram illustrating a variant 1-1 of the first embodiment. Specifically, Figure 5 It corresponds to Figure 3 The illustration. Figure 6 This is a diagram showing the groove 815 according to variant example 1-1.

[0103] In the endoscope camera 6 according to the first embodiment described above, the first component according to the invention is a housing 8, and the second component according to the invention is a coupler 9, but is not limited thereto. For example, as according to... Figure 5 and Figure 6 The endoscope camera 6A of the variant 1-1 shown can be a coupler 9A as the first component according to the invention, and a housing 8A as the second component according to the invention.

[0104] Specifically, the coupler 9A according to variant example 1-1 includes a coupler body 95 and an attachment bushing 96, such as Figure 5 As shown.

[0105] Similar to the coupler 9 described in the first embodiment, the coupler body 95 has a bottomed cylindrical shape that can be engaged in the eyepiece 232.

[0106] like Figure 5 As shown, a through hole 951 is formed at the bottom of the coupler body 95, passing through the front and rear surfaces of the coupler body 95, and has a circular shape when viewed from the top. Furthermore, on the inner circumferential surface of the through hole 951, on... Figure 5 A protrusion 952 is formed on the right edge side of the through hole 951, which extends toward the central axis Ax2 and has an annular shape centered on the central axis Ax2. Furthermore, a threaded groove 953 is formed on the inner circumferential surface of the through hole 951. Figure 5 The middle part is located on the left side relative to the protrusion 952.

[0107] The attachment bushing 96 is a component that attaches the coupler 9A to the housing 8A. For example... Figure 5 As shown, the attachment bushing 96 includes a bushing body 961 and a protrusion 962.

[0108] The bushing body 961 has an outer diameter that is substantially the same as the inner diameter of the through hole 951, and is formed into a cylindrical shape with an inner diameter larger than the inner diameter of the protrusion 952. Furthermore, as... Figure 5 As shown, a threaded groove 963 is formed on the outer peripheral surface of the bushing body 961.

[0109] Extending part 962 from Figure 1 The left edge of the inner circumferential surface of the bushing body 961 protrudes toward the central axis Ax2 and is formed into an annular shape with an inner diameter that is substantially the same as that of the protrusion 952.

[0110] The coupler body 95 and the attachment bushing 96 are fixed together by engaging with each other via threaded grooves 953 and 963. In this state, the central axis of the attachment bushing 96 coincides with the central axis Ax2 of the coupler body 95.

[0111] With the coupler body 95 and the attachment bushing 96 fixed to each other, the surfaces of the corresponding ends of the protrusions 952 and 962 face each other and the inner circumferential surface of the bushing body 961, as shown. Figure 5 As shown, a recess 97 is provided that extends annularly around the first axis Ax1. The inner surface of the recess 97 (the surfaces of the corresponding ends of the protrusions 952 and 962 face each other and face the inner peripheral surface of the bushing body 961) corresponds to the first rotary sliding surface according to the invention.

[0112] Furthermore, according to variant 1-1, the housing 8A is constructed without the attached bushing 82, omitting the housing 8 described in the first embodiment above, and is composed only of the housing body 81A having a protrusion 811A with a different shape from the protrusion 811.

[0113] Similar to the protrusion 811 described in the first embodiment, the protrusion 811A has a bottomed cylindrical shape that connects the interior and exterior of the housing body 81A. Furthermore, as... Figure 5 As shown, the optical device 83 is fixed in the protrusion 811A. Furthermore, a convex portion 814 is provided in the protrusion 811A, which extends from... Figure 5 The left edge of the protrusion 814 protrudes from the outer peripheral surface and has an annular shape centered on the first axis Ax1. The thickness of the protrusion 814 is substantially the same as the width of the recess 97. Furthermore, the protrusion 814 has an outer diameter substantially the same as the inner diameter of the bushing body 961. When the protrusion 814 engages (fits) with the recess 97, the coupler 9A is attached to the housing 8A. In this state, the central axis Ax2 is aligned with the first axis Ax1. Furthermore, the coupler 9A is restricted from moving relative to the housing 8A in the direction of the first axis Ax1, and can rotate relative to the housing 8A about the first axis Ax1 (central axis Ax2).

[0114] The outer surface of the protrusion 814 is the portion that slides on the inner surface of the recess 97, and corresponds to the second rotary sliding surface according to the invention.

[0115] like Figure 5 or Figure 6 As shown, a groove 815 is formed at the distal end of the protrusion 814.

[0116] like Figure 6 As shown, the groove 815 extends in a spiral shape around the first axis Ax1 at the distal end of the protrusion 814. With the coupler 9A attached to the housing 8A, the corresponding portions of the two ends 816 and 817 of the groove 815 are located outside the recess 97 in the direction of the first axis Ax1.

[0117] That is, when the relative rotation of the housing 8 and the coupler 9A around the first axis Ax1 is stopped, the outer surface of the protrusion 814 (the second rotating sliding surface according to the invention) abuts only a portion of the inner surface of the recess 97 (the first rotating sliding surface according to the invention) due to the groove 815, so as to expose a portion of the inner surface of the recess 97.

[0118] As a variation 1-1 above, when the first component according to the invention is a coupler 9A and the second component according to the invention is a housing 8A, an effect similar to that of the first embodiment above is produced.

[0119] Second Embodiment

[0120] Next, a second embodiment of the present invention will be described.

[0121] In the following text, the same reference numerals as those in the first embodiment described above will be assigned to the same components, and their detailed descriptions will be omitted or simplified.

[0122] Figure 7 This is a cross-section showing the connection portion between the eyepiece 232 and the endoscope camera 6B according to the second embodiment. Figure 8 This is a diagram showing the coupler 9B according to the second embodiment. Specifically, Figure 8 This is a view of the coupler 9B from the side where the eyepiece 232 is installed.

[0123] In the endoscope camera 6B according to the second embodiment, such as Figure 7 or Figure 8 As shown, a coupler 9B of a different shape than coupler 9 is used for the endoscope camera 6 described in the first embodiment above.

[0124] Compared to the coupler 9 described in the first embodiment, the coupler 9B has a through hole 92B with an inner diameter larger than the inner diameter of the through hole 92. The inner diameter of the through hole 92B is set to be larger than the outer diameter of the protrusions 812 and 822. Furthermore, a protrusion 98 is formed on the inner peripheral surface of the through hole 92B, the protrusion 98 extending from... Figure 7 The right edge of the protrusion 98 protrudes towards the central axis Ax2, and its proximal end extends in an arc shape centered on the central axis Ax2 (first axis Ax1). The thickness of this protrusion 98 is substantially the same as the width of the recess 84. In the second embodiment, three protrusions 98 are provided and arranged around the central axis Ax2 (first axis Ax1) at a 120° angle. o Rotational symmetry. Furthermore, the distal ends of the three protrusions 98 trace a circle with a diameter substantially the same as the outer diameter of the bushing body 821. The bottomed cylindrical opening points towards... Figure 7 In the left-hand position, when the three protrusions 98 engage (fit) with the recesses 84 respectively, the coupler 9B is attached to the housing 8. In this state, the central axis Ax2 is aligned with the first axis Ax1. Furthermore, the coupler 9B is restricted from moving relative to the housing 8 in the direction of the first axis Ax1, and can rotate relative to the housing 8 about the first axis Ax1 (central axis Ax2).

[0125] The outer surface of the protrusion 98 is the portion that slides on the inner surface of the recess 84, and corresponds to the second rotary sliding surface according to the invention.

[0126] That is, when the relative rotation of the housing 8 and the coupler 9B around the first axis Ax1 is stopped, the outer surface of the protrusion 98 (the second rotating sliding surface according to the invention) only abuts against a portion of the inner surface of the recess 84 (the first rotating sliding surface according to the invention) to expose a portion of the inner surface of the recess 84.

[0127] According to the second embodiment described above, the following effects are produced.

[0128] Figure 9 and Figure 10 This is a diagram illustrating the effect of the second embodiment. Specifically, Figure 9 It corresponds to Figure 7 The diagram is shown. Figure 10 It corresponds to Figure 8 The diagram is shown.

[0129] According to the second embodiment, the endoscope camera 6B includes a housing 8 and a coupler 9B. The housing 8 has a recess 84 extending annularly about a first axis Ax1. The coupler 9B has a protrusion 98, the distal end of which extends arcuately about the first axis Ax1 and engages with the recess 84. When the relative rotation of the housing 8 and the coupler 9B about the first axis Ax1 is stopped, the outer surface of the protrusion 98 abuts against only a portion of the inner surface of the recess 84, thereby exposing a portion of the inner surface of the recess 84 to the outside.

[0130] Therefore, the inner surface of the recess 84 can be cleaned as described below.

[0131] That is, such as Figure 9 or Figure 10 As shown, in the gap between the edge portion of the through hole 92B and the protrusion 812, the cleaning brush Br contacts the inner surface of the recess 84 from the portion where the protrusion 98 is not formed. By rotating the coupler 9B and the cleaning brush Br relative to the housing 8 about the first axis Ax1, as... Figure 10 As shown by the middle arrow, the area between the inner surface of the recess 84 and the outer surface of the protrusion 98 can be cleaned easily and effectively.

[0132] Therefore, the endoscope camera 6B according to the second embodiment has the effect of reducing cleaning time.

[0133] Furthermore, the portion of the gap between the edge of the through-hole 92B and the protrusion 812 where the protrusion 98 is not formed will be a ventilation hole connecting the interior and exterior of the space Ar. This can suppress condensation on the eyepiece optical system 2321 or optical device 83 and reduce the drying time when condensation occurs.

[0134] Specifically, the three protrusions 98 are arranged in a rotationally symmetrical manner about the first axis Ax1 120°. o The location of the ventilation holes connecting the interior and exterior of the space Ar can be evenly spaced, which can effectively suppress the formation of condensation on the eyepiece optical system 2321 and the optical device 83, and can significantly reduce the drying time when condensation occurs.

[0135] Variation 2-1 of the second embodiment

[0136] Figure 11 and Figure 12 This is a diagram illustrating a variant 2-1 of the second embodiment. Specifically, Figure 11 This is a cross-section showing the connection between the housing 8C and the coupler 9A according to variant example 2-1. Figure 12 This is a diagram of the housing 8C as viewed from the distal side of the protrusion 811C.

[0137] In the endoscope camera 6B according to the second embodiment described above, the first component according to the invention is the housing 8, and the second component according to the invention is the coupler 9B, but it is not limited thereto. For example, as according to... Figure 11 and Figure 12 The endoscope camera 6C of the variant 2-1 shown can have a coupler 9A as the first component according to the invention, and a housing 8C as the second component according to the invention.

[0138] Specifically, the coupler 9A according to variant 2-1 has the same configuration as the coupler 9A described in variant 1-1.

[0139] Furthermore, according to variant 2-1, the housing 8C is constructed without the attached bushing 82, omitting the housing 8 described in the second embodiment, and consists only of the housing body 81C, which has a protrusion 811C of a different shape from the protrusion 811, such as... Figure 11 or Figure 12 As shown.

[0140] Similar to the protrusion 811 described in the second embodiment, the protrusion 811C has a cylindrical shape that connects the interior and exterior of the housing body 81C. Furthermore, as... Figure 11 As shown, an optical device 83 is fixed inside the protrusion 811C. Furthermore, a protrusion 818 is formed in the protrusion 811C, which protrudes from the outer surface... Figure 11 The left edge of the protrusion 818 protrudes, and its proximal end extends in an arc shape centered on the first axis Ax1. The thickness of this protrusion 818 is substantially the same as the width of the recess 97. In variant 2-1, three protrusions 818 are provided and are arranged around the first axis Ax1 at a 120° angle. o Rotational symmetry. Furthermore, the distal trajectories of the three protrusions 98 form a circle, the diameter of which is substantially the same as the inner diameter of the bushing body 961. The bottomed cylindrical opening points towards... Figure 11 In the left-hand position, when the three protrusions 818 engage (fit) with the recesses 97 respectively, the coupler 9A is attached to the housing 8C. In this state, the central axis Ax2 is aligned with the first axis Ax1. Furthermore, the coupler 9C is restricted from moving relative to the housing 8C in the direction of the first axis Ax1, and can rotate relative to the housing 8C about the first axis Ax1 (central axis Ax2).

[0141] The outer surface of the protrusion 818 is the portion that slides on the inner surface of the recess 97, and corresponds to the second rotary sliding surface according to the invention.

[0142] That is, when the relative rotation of the housing 8C and the coupler 9A around the first axis Ax1 is stopped, the outer surface of the protrusion 818 (the second rotating sliding surface according to the invention) is adjacent only to a portion of the inner surface of the recess 97 (the first rotating sliding surface according to the invention), so as to expose a portion of the inner surface of the recess 97.

[0143] As in the above-described variant 2-1, when the first component according to the invention is a coupler 9A and the second component according to the invention is a housing 8C, a similar effect as in the above-described second embodiment is produced.

[0144] Variation 2-2 of the second embodiment

[0145] Figure 13 This is a diagram illustrating a variant 2-2 of the second embodiment. Specifically, Figure 13 It corresponds to Figure 7 The diagram is shown.

[0146] In the second embodiment described above, protrusion 98 can be replaced by protrusion 98D, as in the case of... Figure 13 In the endoscopic camera 6D (coupler 9D) of the variant example 2-2 shown.

[0147] like Figure 13 As shown, the protrusion 98D includes a protrusion body 981 and a convex portion 982.

[0148] The protrusion body 981 is located on the inner circumferential surface of the through hole 92B from... Figure 13 The portion protruding from the right edge of the protrusion 981 toward the central axis Ax2. The proximal end of this protrusion body 981 extends in an arc shape with the central axis Ax2 (first axis Ax1) as the center. Furthermore, the thickness of the protrusion body 981 is greater than the width of the recess 84. In addition, the distal trajectories of the three protrusion bodies 981 form a circle, the diameter of which is substantially the same as the outer diameter of the protrusion 812.

[0149] The protrusion 982 is located at the distal end of the protruding body 981 from... Figure 13 The left edge of the protrusion 982 protrudes towards the central axis Ax2. The thickness of the protrusion 982 is substantially the same as the width of the recess 84. Furthermore, the distal traces of the three protrusions 982 form a circle with a diameter smaller than the outer diameter of the protrusion 812 and larger than the outer diameter of the bushing body 821.

[0150] As described above, the distal end of the protrusion 98D is formed into a stepped shape along the central axis Ax2 by the protrusion 982.

[0151] Using the above structure, the opening in the bottom cylindrical shape points towards Figure 13 In the left-hand position, when the three protrusions 982 engage (fit) with the recesses 84 respectively, and when the distal end of the protrusion body 981 abuts against the outer peripheral surface of the protrusion 812, the coupler 9D is attached to the housing 8. In this state, the central axis Ax2 is aligned with the first axis Ax1. Furthermore, the coupler 9D is restricted from moving relative to the housing 8 in the direction of the first axis Ax1, and can rotate relative to the housing 8 about the first axis Ax1 (central axis Ax2).

[0152] The inner surface, outer peripheral surface, and protrusion 812 of the recess 84 are the portions on which the coupler 9D slides, and correspond to the first rotary sliding surface according to the invention. Furthermore, the outer surface of the protrusion 98D (the distal end of the protrusion body 981 and the outer surface of the convex portion 982) are the portions on the inner surface of the recess 84 and the outer peripheral surface of the protrusion 812, and correspond to the second rotary sliding surface according to the invention.

[0153] That is, when the relative rotation of the housing 8 and the coupler 9D around the first axis Ax1 is stopped, the outer surface of the protrusion 98D (the second rotating sliding surface according to the invention) is adjacent only to a portion of the inner surface of the recess 84 and the outer peripheral surface of the protrusion 812 (the first rotating sliding surface according to the invention), so as to expose a portion of the inner surface of the recess 84 and the outer peripheral surface of the protrusion 812 to the outside.

[0154] According to the above-described variant 2-2, in addition to the effects similar to those of the second embodiment described above, the following effects also occur.

[0155] In the endoscope camera 6D according to variant 2-2, the outer peripheral surface of the protrusion 812 and the distal end of the protrusion body 981 form part of the first and second rotary sliding surfaces according to the invention. That is, not the deep interior portion, but the easily cleanable portion forms part of the first and second rotary sliding surfaces according to the invention. Therefore, cleaning becomes easier, and cleaning time can be further reduced.

[0156] Variations 2-3 of the second embodiment

[0157] Figure 14 These are illustrations showing variations 2-3 of the second embodiment. Specifically, Figure 14 It corresponds to Figure 7 The diagram is shown.

[0158] In the second embodiment described above, as according to Figure 14 In the endoscopic camera BE (coupler 9E) of the variant examples 2-3 shown, the protrusion 98 can be replaced by the protrusion 98.

[0159] The protrusion 98E is positioned offset to the right (away from the eyepiece 232) from the position of the protrusion 98 described in the second embodiment.

[0160] According to the above variations 2-3, in addition to the effects similar to those of the second embodiment, the following effects are also produced.

[0161] In the endoscope camera 6E according to variants 2-3, the protrusion 98E is positioned away from the eyepiece 232. That is, by expanding the space Ar, sufficient ventilation is achieved. Therefore, condensation on the eyepiece optical system 2321 or optical device 83 can be effectively suppressed, and when condensation does form, the drying time is significantly reduced.

[0162] Other embodiments

[0163] Embodiments of the present invention have been described, but the present invention is not limited to the first and second embodiments and variations 1-1, 2-1 to 2-3 described above.

[0164] Figure 15 This is a diagram illustrating a variant example 3-1 of the first and second embodiments.

[0165] In the first and second embodiments and variations 1-1, 2-1 to 2-3, the endoscopic cameras 6, 6A to 6E are detachably mounted relative to the resection scope 2 for the urinary organs, but are not limited thereto. As in the embodiments according to Figure 15 In the endoscopic device 1F of the variant 3-1 shown, the endoscopic camera 6 can be detachably mounted, for example, relative to the endoscope 2F used for digestive organs.

[0166] Endoscope 2F is a rigid endoscope. That is, endoscope 2F is a rigid endoscope or at least a portion thereof is a flexible endoscope, and has an elongated shape for insertion into a living body. In this endoscope 2F, an optical system consisting of one or more lenses is provided, which collects images of the object. From the light source device 14 ( Figure 15 Light supplied to the light guide 2322 is emitted from the distal end of the endoscope 2F to illuminate the interior of the living body. The light illuminating and reflecting inside the living body (object image) is collected by the optical system in the endoscope 2F. The endoscope camera 6 images the object image collected by the optical system in the endoscope 2F.

[0167] Furthermore, not limited to rigid endoscopes, endoscope 2F can be a flexible endoscope.

[0168] In the first and second embodiments and variations 1-1, 2-1 to 2-3, 3-1, the endoscope devices 1 and 1F can be endoscope devices used in the industrial field to observe the inside of an object, for example, mechanical structures.

[0169] In the first embodiment and variant 1-1 described above, the grooves (grooves 94, 815) according to the present invention are provided in the protrusions 93, 814, but are not limited thereto, and may be provided in the recesses 84, 97.

[0170] In the second embodiment and variations 2-1 to 2-3 described above, the number of protrusions (protrusions 98, 98D, 98E, 818) according to the present invention is not limited to three, but can be one, two, four or more.

[0171] List of reference numerals

[0172] 1. 1F Endoscopic Device

[0173] 2. Resection endoscopy

[0174] 2F endoscope

[0175] 3 Endoscopic imaging devices

[0176] 4 Display devices

[0177] 5 Control devices

[0178] 6. Endoscopic cameras from 6A to 6E

[0179] 7 cables

[0180] 8, 8A, 8C housings

[0181] Couplers 9, 9A, 9B, and 9D

[0182] 10-prism

[0183] 11 lens units

[0184] 12 imaging units

[0185] 13 operating units

[0186] 14 Light Source Devices

[0187] 21 sheath

[0188] 22 catheters

[0189] 23 Endoscopes

[0190] 24. Remove electrode components

[0191] 25 handle part

[0192] 81, 81A, 81C shell body

[0193] 82 Attached Bushing

[0194] 83 Optical Device

[0195] 84 concavity

[0196] 91 Pressing Part

[0197] 92, 92B through holes

[0198] 93 convex part

[0199] 94 Groove

[0200] 95 Coupler Body

[0201] 96 Attached Bushing

[0202] 97 concavity

[0203] 98, 98D, 98E protrusions

[0204] 221 Installation Components

[0205] 222 Water Supply Inlet

[0206] 231 Insertion Section

[0207] 232 eyepiece

[0208] 251 fixing ring

[0209] 252 sliders

[0210] 253 Spring Components

[0211] 811, 811A, 811C protrusions

[0212] 812 Extended Part

[0213] 813 threaded groove

[0214] 814 convex part

[0215] 815 Groove

[0216] 816.817 Both ends

[0217] 818 protrusions

[0218] 821 Bushing Body

[0219] 822 Extending part

[0220] 823 threaded groove

[0221] The two ends of 941 and 942

[0222] 951 through hole

[0223] 952 extension

[0224] 953 threaded groove

[0225] 961 Bushing Body

[0226] 962 Extending part

[0227] 963 threaded groove

[0228] 981 protrusion main body

[0229] 982 convex part

[0230] 2321 Eyepiece Optical System

[0231] 2322 optical guide

[0232] 2323 Light Source Connector

[0233] 2324 Extension Section

[0234] 2521 High Frequency Power Cord

[0235] 2522 power connector

[0236] 2523 Finger Hook Component

[0237] Ar Space

[0238] Ax1 First Axis

[0239] Ax2 central axis

[0240] Ax3 Endoscope Optical Axis

[0241] Ax4 housing internal optical axis

[0242] CN1, CN2 connectors

[0243] O Center of gravity

Claims

1. An endoscope camera, comprising The first component and the second component are capable of rotating relative to each other about a first axis, wherein... The first component has a first rotational sliding surface that extends annularly around a first axis. The second member, with its movement restricted relative to the first member in the direction of the first axis, engages with the first rotary sliding surface and has a second rotary sliding surface that rotates and slides relative to the first rotary sliding surface about the first axis. The second rotating sliding surface is adjacent only to a portion of the first rotating sliding surface, so as to expose a portion of the first rotating sliding surface to the outside. The second component has a pressing part on its inner circumferential surface, which is configured to press the eyepiece assembled in the second component against the bottom of the second component. The first component further includes an annularly extending recess centered on a first axis, and The first rotating sliding surface includes the inner surface of the recess. The second component further includes a plurality of protrusions configured to engage with the recess. Each protrusion has a distal end extending in an arc shape centered on the first axis, and the second rotary sliding surface includes the outer surface of the plurality of protrusions. Wherein, the first rotating sliding surface is a surface facing a direction opposite to that of the first axis, and The second rotating sliding surface is a surface facing the first axis.

2. The endoscope camera according to claim 1, wherein, The plurality of protrusions are provided in a circumferential direction, with the first axis as the center.

3. The endoscopic camera according to any one of claims 1 to 2, comprising: Coupler, which holds the endoscope in place to capture and output images of the object; as well as The main camera unit includes a housing that rotatably supports the coupler around a first axis, and an imaging unit housed within the housing that images the object emitted from the endoscope. The first component is a housing, and The second component is a coupler.

4. The endoscopic camera according to any one of claims 1 to 2, comprising: Coupler, which holds the endoscope in place to capture and output images of the object; as well as The main camera unit includes a housing that rotatably supports the coupler around a first axis, and an imaging unit housed within the housing that images the object emitted from the endoscope. The first component is a coupler, and The second component is the shell.

5. The endoscopic camera according to claim 1, wherein, The cleaning brush contacts the inner surface of the recess from the portion where the protrusion is not formed.

6. The endoscopic camera according to claim 5, wherein, In the gap between the edge portion of the through hole formed on the bottom of the second member and the protrusion extending from the body of the first member and disposed on the outer peripheral side, the portion where the protrusion is not formed will be a ventilation hole communicating between the interior and exterior of the space formed between the optical device mounted on the first member and the eyepiece optical system mounted on the second member.

7. The endoscopic camera according to claim 1, wherein, Four of the aforementioned pressing portions are provided and configured to be 90 degrees around the first axis. o Rotationally symmetric.

Images