Endoscopic cameras and endoscopy camera systems

Abstract

An endoscopic camera and an endoscopic camera system include a handle, a chip module, an optical module, and a handwheel. The handle has a receiving cavity, one end of which has an opening connected to the receiving cavity. A front cover is mounted on the opening of the handle, and the front cover has a through hole. The chip module is located within the receiving cavity of the handle and is mounted on the front cover via a fixing bracket. The chip module is used to convert optical signals into electrical signals. One end of the optical module passes through the through hole of the front cover to connect to the chip module. The handwheel is mounted on the optical module and is used to adjust the imaging focal length. Because the optical module is connected to the chip module, and the chip module is connected to the front cover via the fixing bracket, the space occupied by the chip module and the front cover is reduced, thereby reducing the volume of the handle and achieving miniaturization of the endoscopic camera.

Description

Technical Field

[0001] The present application relates to an in-vivo diagnostic instrument, and in particular to an endoscopic camera head and an endoscopic camera system. Background Art

[0002] Rigid endoscopes are mainly used for the diagnosis and (or) treatment of lesions in the natural cavities of the superficial and shallow parts of the human body and in the oral cavities opened through puncture, such as cystoscopes and hysteroscopes. Rigid endoscopes cannot be bent during operation.

[0003] A rigid tube endoscope primarily consists of a camera, light source, light guide, rigid tube endoscope, optical mount, camera host, and display. The camera includes an optical module, chip module, and front cover. The optical module and chip module are separately mounted on the front cover, which in turn is attached to the handle through the front cover. This bulky structure hinders miniaturization of the handle. Summary of the Invention

[0004] In one embodiment, an endoscope camera head is provided, comprising:

[0005] A handle, wherein the handle has a receiving cavity, and one end of the handle has an opening communicating with the receiving cavity;

[0006] A front cover, the front cover being mounted on the opening of the handle and having a through hole;

[0007] A chip module, the chip module is located in the accommodating cavity of the handle and is mounted on the front cover via a fixing bracket, and the chip module is used to convert optical signals into electrical signals;

[0008] an optical module, one end of which passes through the through hole of the front cover and is connected to the chip module;

[0009] and a hand wheel, wherein the hand wheel is mounted on the optical module and is used to adjust the imaging focal length.

[0010] In one embodiment, the chip module includes a housing and a chip assembly, the chip assembly is installed in the housing, one end of the fixing bracket is connected to the front cover, and the other end is connected to the housing of the chip module.

[0011] In one embodiment, the fixing bracket is an L-shaped structure, and the fixing bracket includes a long arm and a short arm, the long arm is abutted against the shell and connected to the shell, and the short arm is abutted against the front cover and connected to the front cover.

[0012] In one embodiment, the long arm and the short arm of the fixing bracket are fixed to the shell and the front cover respectively by screws.

[0013] In one embodiment, the L-shaped fixing bracket is formed by bending a straight plate.

[0014] In one embodiment, there are multiple fixing brackets, and at least one of the multiple fixing brackets is connected to a grounding cable.

[0015] In one embodiment, the fixing bracket connected to the grounding cable is a grounding bracket, and an end of a long arm of the grounding bracket extends to an axial end of the housing.

[0016] In one embodiment, the shell is a square box-shaped structure, and the multiple fixing brackets are connected to different surfaces of the shell.

[0017] In one embodiment, the optical module includes a lens barrel, a fixed optical component, and an adjustable optical component. One end of the lens barrel passes through the through hole of the front cover and is connected to the housing of the chip module. The fixed optical component is installed at an end of the lens barrel away from the chip module. The adjustable optical component is installed in the lens barrel so as to be axially movable.

[0018] The hand wheel is rotatably mounted on the lens barrel and is connected to the adjustable optical component via a connecting piece. The hand wheel is used to adjust the axial position of the adjustable optical component.

[0019] In one embodiment, the housing is connected to the lens barrel via a mounting seat.

[0020] In one embodiment, the mounting base is fixedly connected to the housing, and the mounting base is detachably connected to the lens barrel.

[0021] In one embodiment, a locking hole is provided on the mounting seat, a locking screw is installed in the locking hole, and the locking screw locks one end of the lens barrel in the mounting seat.

[0022] In one embodiment, a limiting portion is provided on the outer surface of the lens barrel, the limiting portion is clamped on the front cover, and the limiting portion is used to limit the axial position of the lens barrel.

[0023] In one embodiment, the limiting portion is an annular protrusion, or a plurality of protrusions located on the same circumference.

[0024] In one embodiment, an endoscopic camera system is provided, including a light source, a light guide, an endoscope, an optical mount, a communication cable, a camera host, a display, a video connection cable and the above-mentioned endoscopic camera head, wherein the light source is connected to the endoscope through the light guide, one end of the endoscopic camera head is connected to the endoscope through the optical mount, the other end of the endoscopic camera head is connected to the camera host through the communication cable, and the camera host is connected to the display through the video connection cable.

[0025] According to the endoscopic camera and endoscopic camera system of the above-mentioned embodiments, since the optical module is connected to the chip module, and the chip module is connected to the front cover through a fixed bracket, the space occupied by the chip module and the front cover is reduced, thereby reducing the volume of the handle and realizing the miniaturization of the endoscopic camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of an endoscope camera system in one embodiment;

[0027] Figure 2 is a cross-sectional view of an endoscope camera head in one embodiment;

[0028] Figure 3 is a cross-sectional view of an adjustable optical assembly in one embodiment;

[0029] Figure 4 is a cross-sectional view of an endoscope camera head in one embodiment;

[0030] Figure 5 is a cross-sectional view of an endoscope camera head in one embodiment;

[0031] Figure 6 is a cross-sectional view of an endoscope camera head in one embodiment;

[0032] Figure 7 Schematic diagram of the structure of the connection between the optical module and the chip module in one embodiment. DETAILED DESCRIPTION

[0033] Wherein similar elements in different embodiments have adopted associated similar element labels.In the following embodiments, many detailed descriptions are in order to make the present application better understood. However, those skilled in the art can effortlessly realize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core part of the present application being overwhelmed by too much description. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in this area.

[0034] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0035] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0036] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be noted that

[0037] like Figure 1 As shown, an endoscopic camera system 1000 is provided in one embodiment, and the endoscopic camera system 1000 includes a light source 10, a light guide 20, a rigid tube endoscope 30, an optical mount 40, an endoscopic camera head 50, a communication cable 81, a camera host 60, a display 70 and a video connection cable 82. The camera host 60 is connected to the endoscopic camera head 50 via the communication cable 81, and the image signal obtained by the endoscopic camera head 50 is transmitted to the camera host 60 via the communication cable 81 for processing. In some embodiments, the communication cable 81 can be an optical communication cable, such as an optical fiber; the endoscopic camera head 50 converts the image signal (electrical signal) into an optical signal, which is transmitted to the camera host 60 via the communication cable 81, and the camera host 60 then converts the optical signal into an electrical signal. The camera host 60 is connected to the display 70 via the video connection cable 82 for sending the video signal to the display 70 for display. It should be understood by those skilled in the art that Figure 1 The endoscopic camera system 1000 is merely an example and does not limit the endoscopic camera system 1000. The endoscopic camera system 1000 may include Figure 1 More or fewer components, or combinations of certain components, or different components may be shown. For example, the endoscopic camera system 1000 may also include a dilator, a smoke control device, input and output devices, a network access device, etc.

[0038] The light source 10 is used to provide an illumination source to the observed area 100. The illumination source includes a visible light source and a laser illumination source (such as near-infrared light) corresponding to a fluorescent agent. The light source 10 includes, but is not limited to, a laser light source, an LED light source, or a laser diode.

[0039] In this embodiment, the light source 10 includes a visible light source and a laser light source corresponding to the fluorescent reagent. The visible light source is an LED light source. In one embodiment, the visible light source can provide a plurality of monochromatic lights of different wavelength ranges, such as blue light, green light, red light, etc. In other embodiments, the visible light source can also provide a combination of the plurality of monochromatic lights, or a wide-spectrum white light source. The wavelength range of the monochromatic light is approximately 400nm to 700nm. The laser light source is used to generate laser light. The laser is, for example, near infrared light (NIR). The peak wavelength of the laser takes at least one value within the range of 780nm or 808nm.

[0040] Since the light source 10 can simultaneously provide continuous visible light and laser light corresponding to the fluorescent agent to the part to be observed, the efficiency of the camera 50 in collecting visible light image signals and fluorescent image signals reflected by the part to be observed 100 is improved.

[0041] Before imaging using the endoscopic camera system 1000, a contrast agent, such as indocyanine green (ICG), is introduced into the part to be observed 100 by intravenous or subcutaneous injection, so as to image tissue structures and functions (such as blood / lymph / bile in blood vessels) that are not easily visible using standard visible light imaging technology. The part to be observed 100 includes, but is not limited to, the circulatory system, the lymphatic system, and tumor tissue. ICG is commonly known as indocyanine green, diagnostic green needle, and indocyanine green. It is a contrast agent currently commonly used in the clinical diagnosis of cardiovascular diseases and is widely used in choroidal and retinal vascular imaging. When the contrast agent in the part to be observed 100 absorbs the laser light generated by the laser light source corresponding to the fluorescent agent, fluorescence can be generated.

[0042] An endoscope camera 50 is provided in one embodiment. This application is described using a hard tube endoscope camera as an example. The endoscope camera can also be used on a flexible endoscope.

[0043] like Figure 2 As shown, the endoscope camera head of this embodiment includes a handle 1, a chip module 2, an optical module 3 and a hand wheel 4.

[0044] The handle 1 has the functions of accommodating components and holding. The handle 1 has a accommodating cavity 11. Both ends of the handle 1 have openings connected to the accommodating cavity 11. The openings at both ends of the handle 1 are used to connect the communication cable 81 and the optical module 3 respectively. The chip module 2 is accommodated in the handle 1. The handle 1 is also equipped with a button assembly 12. The button assembly 12 is connected to the chip module 2 through a cable. The doctor can hold the handle 1 and control the imaging detection of the endoscope camera through the button assembly 12. A front cover 5 is provided at the end of the handle 1 close to the handwheel 4. The front cover 5 has a through hole. The front cover 5 is installed on the opening of the handle 1. The front cover 5 is used to install the chip module 2 and the optical module 3 in the accommodating cavity 11 of the handle 1. In other embodiments, the tail end of the handle 1 communicates with the camera host wirelessly. In this case, only one end of the handle has an opening connected to the accommodating cavity 11.

[0045] The chip module 2 includes a shell 21 and a chip assembly 22. The shell 21 is located in the accommodating cavity 11 of the handle. The shell 21 is installed on the front cover 5. The chip assembly 22 is installed in the shell 21. The chip assembly 22 includes components such as a sensor and a processor. The sensor is an optical sensor. The sensor is used to convert light signals into electrical signals. The sensor is used to amplify, filter and other processes the electrical signals output by the sensor. The processor transmits the processed electrical signals to the host 60 through the communication cable 81 for further processing.

[0046] The optical module 3 includes a lens barrel 31, a fixed optical component 32 and an adjustable optical component 33. The fixed optical component 32 is fixedly installed at one end of the lens barrel 31, and the adjustable optical component 33 is axially movable inside the lens barrel 31. The adjustable optical component 33 can move relative to the fixed optical component 32 to adjust the imaging focal length.

[0047] The handwheel 4 is rotatably mounted on the lens barrel 31. A spiral groove is provided on the lens barrel 31. The handwheel 4 is connected to the adjustable optical component 33 in the lens barrel 31 through a connecting piece such as a pin. The pin is inserted into the spiral groove of the lens barrel 31. After the handwheel 4 is rotated, under the limiting action of the spiral groove of the lens barrel 31, the handwheel 4 and the adjustable optical component 33 will rotate axially at the same time, so that the handwheel 4 can be used to adjust the axial position of the adjustable optical component 33 in the lens barrel 31.

[0048] In this embodiment, the fixed optical component 32 includes a fixed lens seat 321 and a fixed lens assembly 322. The fixed lens seat 321 is fixed in the lens barrel 31 by a threaded connection. The fixed lens seat 321 is an annular structure. The fixed lens seat 321 is a cylindrical structure with a mounting hole in the middle. The fixed lens assembly 322 includes two optical lenses. The two optical lenses are fixedly installed in the mounting holes in the two optical lenses, and the two axial mirror surfaces of the fixed lens assembly 322 are respectively flush with the two end surfaces of the fixed lens seat 321.

[0049] like Figure 3 As shown, the adjustable optical assembly 33 includes an adjustable lens seat 331 and an adjustable lens assembly 332. The adjustable lens seat 331 is slidably mounted in the lens barrel 31. The adjustable lens seat 331 is a cylindrical structure having a mounting hole coaxial with the fixed lens seat 321 and the lens barrel 31. The adjustable lens assembly 332 includes a first adjustable lens 3321, a second adjustable lens 3322, a third adjustable lens 3323, a first spacer 3324, and a second spacer 3325. The first adjustable lens 3321, the second adjustable lens 3322, and the third adjustable lens 3323 are sequentially mounted in the lens barrel 31 away from the fixed optical assembly 32. The first spacer 3324 is mounted between the first adjustable lens 3321 and the second adjustable lens 3322, and the second spacer 3325 is mounted between the second adjustable lens 3322 and the third adjustable lens 3323.

[0050] The first adjustable lens 3321 has a concave surface in the middle of its incident surface facing the fixed optical component 32. The exit surface of the first adjustable lens 3321 is a convex surface. The first adjustable lens 3321 is used to convert incoming parallel light into diffuse light for emission. The second adjustable lens 3322 has a flat incident surface facing the first adjustable lens 3321. The exit surface of the second adjustable lens 3322 is a convex surface. The second adjustable lens 3322 is used to convert diffuse light into parallel light. The third adjustable lens 3323 is a cemented lens used to eliminate chromatic aberration. A cemented lens, also called an achromatic lens, is made by gluing two single lenses together. Its performance in complex (white light) imaging is significantly improved compared to that of a single lens. An achromatic lens is made by gluing two lenses of different materials together to correct for the dispersion of the glass. A cemented lens is an achromatic lens made by gluing a low-dispersion crown glass positive lens and a high-dispersion flint glass negative lens. During the design, different dispersion values ​​and lens shapes were optimized at three wavelengths: blue (486.1nm), green (546.1nm) and red (656.3nm) to achieve minimum chromatic aberration.

[0051] The mounting base 23 is snap-fitted to the shell 21 or is an integrated structure. The mounting base 23 and the shell 21 are fixedly connected and cannot be detached. One end of the lens barrel 31 is provided with an external thread, and the mounting base 23 is provided with a corresponding internal thread. The lens barrel 31 and the mounting base 23 are connected by threads, and the lens barrel 31 and the mounting base 23 are detachably connected.

[0052] like Figure 4 As shown, the endoscopic camera 50 also includes a fixing bracket 6, which is located as a whole in the accommodating cavity of the handle 1. The fixing bracket 6 is used to fix the chip module 2 on the front cover 5. The shell 21 of the chip module 2 is a square box-shaped structure (similar to a rectangular structure). The shell 21 has four axial sides, and the chip module 2 is suspended in the accommodating cavity of the handle 1.

[0053] The fixing bracket 6 is an L-shaped bracket, which is formed by bending a straight plate. The fixing bracket 6 includes a long arm and a short arm. The short arm of the fixing bracket 6 is abutted on the front cover 5, and the long arm of the fixing bracket 6 is abutted on the mounting seat 23 and the shell 21. The short arm and long arm of the fixing bracket 6 are respectively fixed to the front cover 5 and the shell 21 by screws. The fixing bracket 6 plays a role of connecting and fixing, fixing the shell 21 to the front cover 5.

[0054] To achieve a better fixing effect, two fixing brackets 6 are provided. The two fixing brackets 6 are mounted on the upper and lower axial sides of the housing 21. The two fixing brackets 6 together fix the housing 21 to the front cover 5. The fixing brackets 6 are L-shaped and can be abutted against the surfaces of the front cover 5 and the housing 21, making the overall structure more compact and occupying less space, which is conducive to the miniaturization of the handle 1.

[0055] Since static electricity is instantaneous high voltage electricity, if it is transmitted into the chip assembly 22, it will break down the components in the chip assembly 22 and damage the components. Figure 5 As shown, in this embodiment, the fixing bracket 6 located at the bottom is configured as a grounding bracket 7. The grounding bracket 7 not only fixes the chip module 2 but also has an anti-static function. The grounding bracket 7 is connected to a grounding cable 8. One end of the grounding cable 8 is connected to the long arm of the grounding bracket 7 via a screw, and the other end extends into the communication cable 81. The grounding bracket 7 can drain static electricity that comes into contact with the endoscope camera 50 away from the grounding cable 8, preventing static electricity from entering the chip assembly 2 and protecting the components within the chip assembly 2.

[0056] The end of the long arm of the grounding bracket 7 extends to the end of the shell 21. The grounding bracket 7 has a longer long arm. The grounding bracket 7 contacts the front cover 5, the mounting base 23 and the shell 21 at the same time. The grounding bracket 7 has a larger contact area and contacts more components, so that the static electricity encountered by the endoscope camera 50 during use can be transmitted to the grounding bracket 7 and then discharged from the grounding cable 8, thereby improving the anti-static effect.

[0057] In other embodiments, the number of fixing brackets 6 may also be four, and the four fixing brackets 6 are respectively installed on the four surfaces of the chip module 2 .

[0058] like Figure 6 and Figure 7As shown, in one embodiment, a limiting portion 311 is further provided on the outer surface of the lens barrel 31. The limiting portion 311 is an annular protrusion. The end surface of the mounting seat 23 abuts against the axial side surface of the limiting portion 311. The limiting portion 311 is used to locate the depth position of the lens barrel 31 inserted into the mounting seat 23, so that the limiting portion 311 can be used to limit the axial position of the lens barrel 31. The limiting portion 311 is located in the accommodating cavity of the handle 1. The inner side surface of the front cover 5 abuts against the axial side surface of the limiting portion 311 of the lens barrel 31. The front cover 5 plays an axial limiting role, limiting the end of the optical module 3 in the accommodating cavity 11 of the handle 1. In other embodiments, the limiting portion 311 is a plurality of radial protrusions, and the plurality of radial protrusions are evenly distributed on an outer circumference of the lens barrel 31. The plurality of radial protrusions can also play a limiting role.

[0059] like Figure 7 As shown, in one embodiment, a locking hole is provided on the mounting base 23, and a locking screw 231 is installed in the locking hole. The end of the locking screw 231 extends to the interior of the mounting base 23 and rests on the lens barrel 31. The locking screw 231 presses the end of the lens barrel 31 into the mounting base 23, which can prevent the lens barrel 31 and the mounting base 23 from loosening.

[0060] In one embodiment, an endoscope camera 50 is provided. The difference from the above embodiment is that the optical module of the endoscope camera of this embodiment cannot adjust the focal length, and all optical lenses are fixedly installed. Specifically, the adjustable lens holder 331 is fixedly connected to the lens barrel 31.

[0061] In this embodiment, the handle 1 serves both as a storage space for components and a grip. It has a chamber 11, with openings at both ends communicating with chamber 11. These openings are used to connect the communication cable 81 and the optical module 3, respectively. The handle 1 houses the chip module 2 and is also equipped with a button assembly 12, which is connected to the chip module 2 via a cable. A doctor can hold the handle 1 and control the endoscope camera's imaging and detection functions using the button assembly 12.

[0062] The chip module 2 includes components such as a sensor and a processor. The chip module 2 is used to convert the optical signal into an electrical signal, and then process the electrical signal and transmit it to the camera host 60 through the communication cable 81 for imaging.

[0063] One end of the optical module 3 is directly inserted into the accommodating cavity 11 of the handle 1 and connected to the chip module 2. One end of the optical module 3 can also be connected to the chip module 2 through the front cover, and the entire optical module 3 is located outside the accommodating cavity 11 of the handle 1.

[0064] The optical module 3 includes a lens barrel 31, a fixed optical component 32, an adjustable optical component 33, and an anti-collision terminal 34. One end of the lens barrel 31 is mounted through a front cover or directly on an opening at one end of the handle 1 away from the communication cable 81, and the other end of the lens barrel 31 is connected to the optical bayonet 40. The fixed optical component 32 and the adjustable optical component 33 are mounted in the lens barrel 31, wherein the adjustable optical component 33 is fixed in the lens barrel 31 by screws or pins. The adjustable optical component 33 is adjustable and cannot be moved after installation. If the installation position needs to be adjusted, it is necessary to release the locking of the screws or pins, unlock and move the adjustable optical component 33, and then fix and lock it to achieve adjustable installation.

[0065] In one embodiment, an endoscope camera head 50 is provided, which differs from the above embodiments in that the optical lens is directly fixedly mounted in the lens barrel.

[0066] In this embodiment, the endoscopic camera 50 is a camera with a fixed focal length. The endoscopic camera includes a lens barrel and an optical component. The optical component includes a number of optical lenses and spacers. The optical lenses include optical lenses for emitting diffuse light and parallel light. The output surface of the optical lens is connected to a spacer with a through hole. The shape of the through hole of the spacer is consistent with the shape of the light beam passing through itself, ensuring that the stray light emitted by the optical lens can be blocked by the spacer at the rear end and avoid effective light to improve the imaging quality.

[0067] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, the above specific embodiments can be modified.

Claims

1. An endoscope camera head, characterized in that: include: A handle, wherein the handle has a receiving cavity, and one end of the handle has an opening communicating with the receiving cavity; A front cover, the front cover being mounted on the opening of the handle and having a through hole; A chip module, the chip module is suspended and mounted in the accommodating cavity of the handle, and the chip module is mounted on the front cover via a fixing bracket, and the chip module is used to convert optical signals into electrical signals; an optical module, one end of which passes through the through hole of the front cover and is connected to the chip module, and the front cover is used to install the chip module and the optical module in the accommodating cavity of the handle; and a hand wheel, wherein the hand wheel is mounted on the optical module and is used to adjust the imaging focal length.

2. The endoscope camera head according to claim 1, wherein: The chip module comprises a shell and a chip assembly, wherein the chip assembly is installed in the shell, one end of the fixing bracket is connected to the front cover, and the other end is connected to the shell of the chip module.

3. The endoscope camera head according to claim 2, wherein: The fixing bracket is an L-shaped structure and includes a long arm and a short arm. The long arm is abutted against and connected to the shell, and the short arm is abutted against and connected to the front cover.

4. The endoscope camera head according to claim 3, wherein: The long arm and the short arm of the fixing bracket are fixed to the shell and the front cover respectively by screws.

5. The endoscope camera head according to claim 3, wherein: The L-shaped fixing bracket is formed by bending a straight plate.

6. The endoscope camera head according to claim 3, wherein: There are multiple fixing brackets, and at least one of the multiple fixing brackets is connected to a grounding cable.

7. The endoscope camera head according to claim 6, wherein: The fixing bracket connected to the grounding cable is a grounding bracket, and the end of the long arm of the grounding bracket extends to the axial end of the shell.

8. The endoscope camera head according to claim 6, wherein: The shell is a square box-shaped structure, and the multiple fixing brackets are connected to different surfaces of the shell.

9. The endoscope camera head according to any one of claims 1 to 8, wherein: The optical module includes a lens barrel, a fixed optical component and an adjustable optical component, one end of the lens barrel passes through the through hole of the front cover and is connected to the housing of the chip module, the fixed optical component is installed at the end of the lens barrel away from the chip module, and the adjustable optical component is axially movable in the lens barrel; The hand wheel is rotatably mounted on the lens barrel and is connected to the adjustable optical component via a connecting piece. The hand wheel is used to adjust the axial position of the adjustable optical component.

10. The endoscope camera head according to claim 9, wherein: The shell is connected to the lens barrel through a mounting seat.

11. The endoscope camera head according to claim 10, wherein: The mounting base is fixedly connected to the shell, and the mounting base is detachably connected to the lens barrel.

12. The endoscope camera head according to claim 11, wherein: The mounting seat is provided with a locking hole, in which a locking screw is installed. The locking screw locks one end of the lens barrel in the mounting seat.

13. The endoscope camera head according to claim 9, wherein: A limiting portion is provided on the outer surface of the lens barrel, the limiting portion is clamped on the front cover, and the limiting portion is used to limit the axial position of the lens barrel.

14. The endoscope camera head according to claim 13, wherein: The limiting portion is an annular protrusion, or a plurality of protrusions located on the same circumference.

15. An endoscope camera system, characterized in that: It includes a light source, a light guide, an endoscope, an optical mount, a communication cable, a camera host, a display, a video connecting line and an endoscopic camera head according to any one of claims 1 to 14, wherein the light source is connected to the endoscope through the light guide, one end of the endoscopic camera head is connected to the endoscope through the optical mount, the other end of the endoscopic camera head is connected to the camera host through the communication cable, and the camera host is connected to the display through the video connecting line.

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