Breast duct endoscope

Abstract

The utility model provides a breast duct endoscope which comprises a camera part and a fiberscope part, the camera part comprises an outer cylinder and a handle shell, the rear end of the outer cylinder is located in the handle shell and connected with a camera device, and the front end of the outer cylinder is exposed out of the front end of the handle shell; the fiberscope part comprises an image fiber seat base and a connecting piece, the connecting piece is connected to the rear end of the image fiber seat base, the rear end of the connecting piece is matched with the front end of the outer cylinder through an inserting structure, and the fiberscope part and the camera part are connected and fixed through a fixing device. By means of the inserting structure, the alignment difficulty is reduced, through the connecting and fixing mode of one fixing device, quick mounting and dismounting can be achieved during use every time, operation is easy, and the assembling duration is shortened.

Description

TECHNICAL FIELD

[0001] The application discloses a breast duct endoscope and belongs to the technical field of fiber endoscopes. BACKGROUND

[0002] In the diagnosis and treatment of breast diseases, a fiber breast duct endoscope is an important tool. A common fiber breast duct endoscope can be used multiple times, but multiple uses require high disinfection of the breast duct endoscope, and slight negligence can cause cross infection and serious consequences. Therefore, disposable breast duct endoscopes appear on the market.

[0003] In the existing disposable breast duct endoscope, the camera head and the fiber endoscope are connected through at least two connection points. For example, the patent with the publication number CN219594534U connects the light source component and the camera component through a light source connector and an image transmission beam seat, respectively. This multi-point connection method can cause alignment difficulties, and the installation operation is complicated and time-consuming. SUMMARY

[0004] The application aims to solve the problems in the prior art. The utility model provides a breast duct endoscope which can solve the problems of multi-point connection alignment difficulties and complicated operation.

[0005] Technical scheme: To achieve the above-mentioned application purposes, the utility model adopts the following technical scheme:

[0006] A breast duct endoscope comprises:

[0007] A camera head comprises an outer cylinder and a handle shell. The rear end of the outer cylinder is located in the handle shell and is connected with a camera device. The front end of the outer cylinder is exposed from the front end of the handle shell.

[0008] A fiber endoscope comprises an image fiber seat base and a connecting piece. The connecting piece is connected to the rear end of the image fiber seat base. The rear end of the connecting piece and the front end of the outer cylinder are matched through a plug-in structure and are connected and fixed by a fixing device.

[0009] As an embodiment, the plug-in structure comprises a plug-in part and a matching part.

[0010] The plug-in part is arranged on the rear end face of the connecting piece or the front end face of the outer cylinder. The matching part is arranged on the front end face of the outer cylinder or the rear end face of the connecting piece.

[0011] When the fiber endoscope and the camera head are connected, the plug-in part is inserted into the matching part, and the rear end face of the connecting piece and the front end face of the outer cylinder are attached.

[0012] As a more specific scheme, the plug-in part is any one of a column pin, a buckle, a mortise and a boss. The matching part is any one of a pin hole, a clamping groove, a mortise and a bayonet.

[0013] As an embodiment, the fixing device comprises a fastening hand wheel;

[0014] The fastening hand wheel is a hollow structure, the rear end of the inner circle is provided with a threaded part, the front end is provided with an annular convex part protruding inward, the front end of the outer wall of the outer cylinder is provided with a front end thread, the fastening hand wheel is sleeved on the image fiber seat base, the inner wall of the front end annular convex part abuts against the annular step structure on the image fiber seat base, and the threaded part at the rear end is connected with the front end thread of the outer wall of the outer cylinder.

[0015] Further, the fixing device further comprises a locking nut, the locking nut is sleeved on the outer wall of the image fiber seat base and connected therewith, and the rear end face of the locking nut abuts against the front end face of the fastening hand wheel.

[0016] On the basis of the above-mentioned schemes, as an embodiment, the connecting piece comprises an image fiber seat and an image fiber seat fixing cover;

[0017] The image fiber seat has a front end part and a rear end part, the front end part of the image fiber seat is connected in the rear end of the image fiber seat base, and the rear end part is exposed from the image fiber seat base;

[0018] The image fiber seat fixing cover covers the rear end part of the image fiber seat, and the image fiber seat fixing cover is connected with the image fiber seat base.

[0019] As a further scheme, the rear end opening of the image fiber seat base is provided with an inwardly recessed annular platform, and the front end part of the image fiber seat is connected in the annular platform;

[0020] The outer wall of the rear end part of the image fiber seat is provided with a convex rib, the inner hole wall of the image fiber seat fixing cover is provided with a first groove, the rear end of the image fiber seat is inserted into the inner hole of the image fiber seat fixing cover, and the convex rib is located in the first groove.

[0021] As a further scheme, the plug-in part or the matching part is arranged at the rear end face of the image fiber seat fixing cover;

[0022] When the fiber scope part and the camera part are connected, the rear end face of the image fiber seat fixing cover and the front end face of the outer cylinder are attached.

[0023] As a further scheme, the fiber scope part further comprises a main mirror tube and an illumination optical fiber, the main mirror tube is connected at the front end inside the image fiber seat base and partially exposed;

[0024] The rear end of the image fiber is connected in the image fiber seat and exposed from the rear end of the image fiber seat, the rear end of the illumination optical fiber is connected in the image fiber seat fixing cover and flush with the rear end face of the image fiber seat fixing cover, and the front end of the image fiber and the front end of the illumination optical fiber are both located at the front end inside the main mirror tube.

[0025] Further, the outer cylinder further comprises an outer cylinder body, a connecting part and an inner cylinder body, the connecting part is connected to the rear end surface of the inner cylinder body, and the outer circumference size of the connecting part is larger than the outer circumference size of the inner cylinder body;

[0026] The connecting part is located in the handle shell and is fixedly connected to the front end of the handle shell; the inner cylinder body is exposed from the front end of the handle shell;

[0027] The outer cylinder body is sleeved on the front end of the outer circumference of the inner cylinder body, the inner diameter of the outer cylinder body is matched with the outer diameter of the image fiber seat fixing cover; the outer walls of the outer cylinder body and the inner cylinder body are provided with through grooves;

[0028] When the fiber scope part and the camera part are connected, the outer ring of the image fiber seat fixing cover is connected to the inner ring of the outer cylinder body, and the rear end surface of the image fiber seat fixing cover is attached to the front end surface of the inner cylinder body.

[0029] Further, the inner cylinder body is provided with a second through hole, and the outer wall of the connecting part is provided with a second notch, the second notch and the second through hole are communicated;

[0030] The second through hole and the illumination optical fiber in the image fiber seat fixing cover are coaxially arranged.

[0031] As an embodiment, the image fiber seat base is a three-section cylindrical structure, comprising a front section, a middle section and a rear section with increasing outer diameters in sequence, the end of the rear section is provided with an inwardly recessed annular platform, and the front end of the image fiber seat is attached to the annular platform of the image fiber seat base;

[0032] The outer wall of the rear section of the image fiber seat base is provided with a first notch, one end of the illumination optical fiber is connected to the image fiber seat fixing cover, and the other end is connected to the main mirror tube on the image fiber seat base through the first notch.

[0033] As an embodiment, the camera part further comprises a focusing dial and an eyepiece adapter lens, the eyepiece adapter lens is connected to the outer cylinder along the axial direction of the outer cylinder, and the cylinder wall of the outer cylinder is provided with a groove;

[0034] The focusing dial is sleeved on the outer wall of the outer cylinder, the inner wall of the focusing dial is provided with a second groove, and the outer wall of the eyepiece adapter lens is connected with an adjusting rod; the top end of the adjusting rod passes through the groove and is located in the second groove;

[0035] The direction of the groove is inclined to the axial direction of the outer cylinder, when the focusing dial rotates, the eyepiece adapter lens can move along the axial direction of the outer cylinder to approach or move away from the fiber scope part;

[0036] Preferably, the camera part further comprises a focusing dial fixing cover, the focusing dial fixing cover is sleeved on the outer wall of the outer cylinder body and is fixedly connected thereto, and the focusing dial is located between the focusing dial fixing cover and the front end of the handle shell.

[0037] As an implementation solution, the rear end of the outer cylinder is connected with a camera device, and the camera device is located in the handle shell;

[0038] As an implementation solution, the camera device comprises a CMOS fixing seat, a filter, a lens shading pad and a CMOS imaging system arranged in sequence, the CMOS imaging system is installed on the side of the CMOS fixing seat, and the filter and the lens shading pad are located between the two; the CMOS fixing seat is provided with a protruding cylindrical structure at the front end, the cylindrical structure is inserted into the rear end of the outer cylinder, and then fixed connection is achieved through the connecting device, so that the connection of the outer cylinder and the camera device is achieved.

[0039] In the application, the "front end" and the "rear end" are described based on the fiber scope imaging objective as the front end (provided at the front end of the image fiber) and the handle tail cover as the rear end, and the front end and the rear end of other components are described based on the above orientation.

[0040] Advantages:

[0041] The application can quickly align the camera head and the fiber scope through the plug-in structure, and the connection and fixation of the camera head and the fiber scope are realized through the fixing device after alignment. The plug-in structure reduces the difficulty of alignment, and the fixed connection through the fixing device can be quickly installed and disassembled every time, which is simple to operate and reduces the assembly time. DETAILED DESCRIPTION

[0042] Figure 1 It is an internal structure diagram of the breast duct endoscope.

[0043] Figure 2 It is an exploded view of the breast duct endoscope.

[0044] Figure 3 It is an internal structure diagram of the image fiber seat base.

[0045] Figure 4 It is a three-dimensional structure diagram of the image fiber seat base.

[0046] Figure 5 It is a structure diagram of the image fiber seat.

[0047] Figure 6 It is a structure diagram of the image fiber seat fixing cover.

[0048] Figure 7 It is a connection state diagram of the image fiber seat base and the image fiber seat fixing cover.

[0049] Figure 8 It is a structure diagram of the outer cylinder (view 1).

[0050] Figure 9 It is the structure schematic view of outer tube in the utility model (view angle 2).

[0051] Figure 10 It is the structure schematic view of outer tube in the utility model (view angle 3).

[0052] Figure 11 It is the structure schematic view of focusing dial in the utility model;

[0053] Wherein, 1, image fiber;101, self-focusing imaging objective;2, main mirror tube;201, support tube inner tube;202, support tube outer tube;3, image fiber seat base;301, front section;302, middle section;303, rear section;3031, first gap;304, small hole;305, annular platform;4, illumination optical fiber filament;5, image fiber seat;501, convex rib;6, image fiber seat fixing cover;601, boss;602, first through hole;603, first groove;7, fastening hand wheel;701, annular convex part;8, locking nut;9, focusing dial;901, second groove;10, outer tube;1001, outer tube body;1002, connecting part;1003, inner tube body;1004, slot;1005, center hole;1006, bayonet;1007, second through hole;1008, second gap;11, eyepiece adapter lens;12, camera device;1201, CMOS fixing seat;12011, cylindrical structure;12012, third gap;1202, filter;1203, lens shading pad;1204, CMOS imaging system;13, handle shell;14, focusing dial fixing cover;15, handle tail cover. DETAILED DESCRIPTION

[0054] The utility model will be further described below in connection with the drawings.

[0055] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0056] In the description of the utility model, it is to explain that, unless there is definite and limited, the term "installation", "link", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be two element internal communication, for ordinary skilled in the art, the above-mentioned term can be understood by concrete case the specific meaning in the utility model.

[0057] Embodiment 1

[0058] The camera part of the present application comprises an outer tube 10 and a handle shell 13. The rear end of the outer tube 10 is located in the handle shell 13, and the front end of the outer tube 10 is exposed at the front end of the handle shell 13. The fiber scope part comprises a fiber optic seat base 3 and a connecting piece. The connecting piece is connected to the rear end of the fiber optic seat base 3, the rear end of the connecting piece is matched with the front end of the outer tube 10 through a plug-in structure, and the fiber scope part and the camera part are connected and fixed through a fixing device.

[0059] In use, the connecting piece of the fiber scope part is aligned with the front end of the outer tube 10, and is gently inserted until the two are completely aligned. The fiber scope part and the camera part are firmly connected through the fixing device. The design of the fixing device ensures the stability and reliability of the overall structure connection. After assembly is completed, the working part of the fiber scope part is inserted into the human body part that needs to be examined, such as the breast duct, for examination. After use, the fiber scope part and the camera part are separated through the fixing device.

[0060] The present application sets a plug-in structure to enable the camera part and the fiber scope part to be quickly aligned, and the connection and fixation of the camera part and the fiber scope part are realized through a fixing device after alignment. The plug-in structure provided in the present application reduces the difficulty of alignment, and through the form of connection and fixation by one fixing device, the camera part and the fiber scope part can be quickly installed and disassembled every time, which is simple to operate and reduces the assembly time.

[0061] Further, the rear end of the outer tube 10 is located in the handle shell 13 and is connected with the camera device in the handle shell. The present application integrates the camera device in the handle shell, so that the whole fiber ductoscope is more compact in size, is more suitable for operation in a narrow space, and improves the flexibility and convenience of use.

[0062] In the present application, the plug-in structure comprises a plug-in part and a matching part; the plug-in part is arranged at the rear end face of the connecting piece or the front end face of the outer tube 10; the matching part is arranged at the front end face of the outer tube 10 or the rear end face of the connecting piece; when the plug-in part is arranged at the rear end face of the connecting piece, the matching part is arranged at the front end face of the outer tube 10. When the plug-in part is arranged at the front end face of the outer tube 10, the matching part is arranged at the rear end face of the connecting piece.

[0063] When the fiberscope part and the camera part are connected, the insertion part is inserted into the matching part, and the rear end face of the connecting piece and the front end face of the outer cylinder 10 are attached.

[0064] The rear end face of the connecting piece and the front end face of the outer cylinder 10 are attached, ensuring the tightness and stability of the connection, avoiding loosening or falling off during use. The tightly attached design can also prevent dust and other debris from entering the connection site, improving the durability and reliability of the equipment.

[0065] Specifically, the insertion part can be one of a variety of insertion forms, such as any one of a pin, a buckle, a mortise, and a boss 601. Correspondingly, the matching part is any one of a pin hole, a clamping groove, a mortise, and a bayonet 1006. By inserting the pin into the pin hole, the buckle into the clamping groove, the mortise into the mortise, and the boss 601 into the bayonet 1006, the connection of the connecting piece and the outer cylinder 10 can be achieved.

[0066] It is worth noting that the insertion part and the matching part play a positioning role, and both the insertion part and the matching part are only provided with one, which facilitates the quick positioning of the fiberscope part and the camera part.

[0067] In this application, the fixing device includes a fastening hand wheel 7; the fastening hand wheel 7 is a hollow structure, the rear end of its inner circle is provided with a threaded part, and the front end is provided with an annular protruding part 701 that protrudes inward, and the front end of the outer periphery of the image fiber seat base 3 has an annular step structure, the fastening hand wheel 7 is sleeved on the image fiber seat base 3, the inner wall of the front end annular protruding part 701 abuts against the annular step structure on the image fiber seat base 3, and the threaded part at the rear end is connected with the external threads at the front end of the outer periphery of the outer cylinder 10.

[0068] The special structure of the fastening hand wheel 7, which is hollow, has a threaded part and an annular protruding part, not only facilitates the operator to manually tighten or loosen, but also effectively prevents loosening caused by long-term use. In addition, it can also tightly fix the image fiber seat base 3 on the outer cylinder 10, further enhancing the stability of the entire system.

[0069] Further, the fixing device further includes a locking nut 8, which is sleeved on and connected with the outer wall of the image fiber seat base 3, and the rear end face of the locking nut 8 abuts against the front end face of the fastening hand wheel 7.

[0070] The locking nut 8 abuts against the front end face of the fastening hand wheel 7, forming a double locking mechanism. This design not only enhances the fixing effect of the fastening hand wheel 7, but also effectively prevents the fastening hand wheel 7 from loosening due to vibration or impact, thereby improving the stability of the overall structure.

[0071] In one embodiment, the connecting piece is a split structure, and the connecting piece comprises an image fiber seat 5 and an image fiber seat fixing cover 6. The image fiber seat 5 has a front end and a rear end. The front end of the image fiber seat 5 is connected in the rear end of the image fiber seat base 3, and the rear end is exposed from the image fiber seat base 3. The front end of the image fiber seat 5 is connected in the rear end of the image fiber seat base 3, which ensures the tightness and reliability of the connection and avoids loosening or falling off during use.

[0072] The image fiber seat fixing cover 6 covers the rear end of the image fiber seat 5, and the image fiber seat fixing cover 6 is connected with the image fiber seat base 3. The image fiber seat fixing cover 6 not only fixes the image fiber seat 5, but also protects the rear end of the image fiber seat 5, prevents external contaminants from entering, keeps the internal components clean and dry, and prolongs the service life of the equipment.

[0073] The image fiber seat 5 and the image fiber seat fixing cover 6 adopt a modular design, so that the image fiber seat 5 and the image fiber seat fixing cover 6 can be independently disassembled and replaced. If a part fails, it can be replaced individually without replacing the entire connecting piece, reducing maintenance costs.

[0074] Further, the rear end opening of the image fiber seat base 3 is provided with an inwardly recessed annular platform 305, and the front end of the image fiber seat 5 is connected to the annular platform 305. The outer periphery of the rear end of the image fiber seat 5 is provided with a protrusion 501, and the inner hole wall of the image fiber seat fixing cover 6 is provided with a first recess 603. The rear end of the image fiber seat 5 is inserted into the inner hole of the image fiber seat fixing cover 6, and the protrusion 501 is located in the first recess 603.

[0075] The annular platform 305 provides stable support, ensuring the stable position of the front end of the image fiber seat 5 in the image fiber seat base 3, preventing displacement or loosening during use.

[0076] The cooperation of the protrusion 501 and the first recess 603 plays a guiding role, which can quickly realize the connection of the image fiber seat 5 and the image fiber seat fixing cover 6, ensure the accurate alignment of the image fiber seat 5 in the image fiber seat base 3 and the image fiber seat fixing cover 6, reduce the installation error, improve the use precision of the equipment, and on the one hand ensure the fixation of the rear end of the image fiber seat 5 in the image fiber seat fixing cover 6, and further enhance the stability of the structure.

[0077] The insertion part or the matching part is arranged at the rear end face of the image fiber seat fixing cover 6. When the fiber scope part and the camera part are connected, the rear end face of the image fiber seat fixing cover 6 and the front end face of the outer cylinder 10 are attached. Further, the insertion part is a boss, and the matching part is a bayonet.

[0078] In another embodiment, the connecting piece is a whole structure, that is, the connecting piece is an external structure with the image fiber seat 5 and the image fiber seat fixing cover 6 to cooperate with other assembly structures. This design facilitates the connection of the connecting piece and the image fiber seat base 3.

[0079] The image fiber 1 and the illumination fiber 4 of the present application adopt a separate design. Specifically, the fiber mirror part further comprises a main mirror tube 2 and an illumination fiber 4, the main mirror tube 2 is connected in the image fiber seat base 3, and the front end is exposed at the front end of the image fiber seat base 3.

[0080] The main mirror tube 2 serves as the main optical transmission channel to ensure the transmission of light and images. The main mirror tube 2 is a pipe with certain strength and can be bent.

[0081] The rear end of the image fiber 1 is connected in the image fiber seat 5 and is exposed at the rear end of the image fiber seat 5; this design can ensure that the image of the image fiber is effectively transmitted to the camera part eyepiece adapter lens. The rear end of the illumination fiber 4 is connected in the image fiber seat fixing cover 6 and is flush with the rear end surface of the image fiber seat fixing cover 6; this flush design ensures that the light source can effectively enter the illumination fiber 4 and ultimately be transmitted to the front end of the main mirror tube 2.

[0082] The front end of the image fiber 1 and the front end of the illumination fiber 4 are both located at the front end inside the main mirror tube 2. Specifically, the front end of the image fiber 1 is connected to the self-focusing imaging objective lens 101, the front end of the self-focusing imaging objective lens 101 is flush with the front end of the illumination fiber 4, the illumination fiber 4 is distributed on the outer periphery of the image fiber 1 and is attached to the inner wall of the main mirror tube 2, and the front end of the illumination fiber 4, the front end of the self-focusing imaging objective lens 101, and the front end of the main mirror tube 2 are flush, or the front end of the self-focusing imaging objective lens 101 is 1-2 mm lower than the front end of the main mirror tube 2. The self-focusing imaging objective lens 101 is a prior art, which will not be described in detail herein, and it can naturally guide the parallel light entering the objective lens to the focal point.

[0083] The present application adopts a separate design of the image fiber 1 and the illumination fiber 4, which facilitates the assembly of the fiber mirror part.

[0084] Further, the outer cylinder 10 comprises an outer cylinder body 1001, a connecting part 1002, and an inner cylinder body 1003, the connecting part 1002 is connected to the rear end surface of the inner cylinder body 1003, and the outer periphery size of the connecting part 1002 is larger than the outer periphery size of the inner cylinder body 1003;

[0085] The connecting part 1002 is located in the handle shell 13 and is connected to the front end of the handle shell 13 by a screw; the inner cylinder body 1003 is exposed from the front end of the handle shell 13;

[0086] The outer cylinder body 1001 is sleeved on the front end of the outer periphery of the inner cylinder body 1003, the inner diameter of the outer cylinder body 1001 is matched with the outer diameter of the image fiber seat fixing cover 6; the outer walls of the outer cylinder body 1001 and the inner cylinder body 1003 are provided with through grooves 1004;

[0087] When the fiber scope part and the camera head part are connected, the outer ring of the image fiber seat fixing cover 6 is connected with the inner ring of the outer cylinder body 1001, and the rear end surface of the image fiber seat fixing cover 6 is attached to the front end surface of the inner cylinder body 1003.

[0088] The inner cylinder body 1003 is exposed from the front end of the handle shell 13; the connecting part 1002 is connected with the front end of the handle shell 13 through a screw, ensuring the stability and reliability of the connection. The outer ring of the image fiber seat fixing cover 6 is connected with the inner ring of the outer cylinder body 1001, and the rear end surface of the image fiber seat fixing cover 6 is attached to the front end surface of the inner cylinder body 1003, ensuring the tightness and stability of the connection and avoiding loosening or falling off during use.

[0089] It is worth noting that the outer peripheral size of the connecting part 1002 is larger than the size of the outer peripheral of the outer cylinder body 1001, the outer cylinder body 1001 is sleeved on the front end of the outer peripheral of the inner cylinder body 1003, the connecting part 1002 is located in the handle shell 13 and is connected with the front end of the handle shell 13 through a screw; the inner cylinder body 1003 is exposed from the front end of the handle shell 13. The inner diameter of the outer cylinder body 1001 and the outer diameter of the image fiber seat fixing cover 6 are matched; when the fiber scope part and the camera head part are connected, the outer ring of the image fiber seat fixing cover 6 is connected with the inner ring of the outer cylinder body 1001, and the rear end surface of the image fiber seat fixing cover 6 is attached to the front end surface of the inner cylinder body 1003.

[0090] The larger outer peripheral size of the connecting part 1002 provides stronger mechanical support and enhances the strength of the connection point, which can effectively prevent loosening or falling off caused by external force during use. The connecting part 1002 is fixed with the front end of the handle shell 13 through a screw, which not only ensures firmness and reliability, but also ensures stability after long-term use, reducing the risk of loosening caused by vibration or impact.

[0091] The inner cylinder body 1003 is exposed from the front end of the handle shell 13, which can be easily connected with other components such as the image fiber seat fixing cover 6, improving the convenience of assembly and disassembly.

[0092] The rear end surface of the image fiber seat fixing cover 6 is attached to the front end surface of the inner cylinder body 1003: this attachment design not only ensures the close contact between the two components, but also reduces the gap in the middle, improving the stability and sealing of the optical system.

[0093] The inner diameter of the outer cylinder body 1001 and the outer diameter of the image fiber seat fixing cover 6 are matched, which ensures that the image fiber seat fixing cover 6 can be accurately inserted into the outer cylinder body 1001, avoiding misalignment caused by size mismatch and improving the assembly precision.

[0094] Further, the inner diameter of the outer cylinder 1001 is adapted to the outer diameter of the image fiber seat fixing cover 6, and can be 0.1mm-0.5mm larger than the outer diameter of the image fiber seat fixing cover 6.

[0095] Further, the inner cylinder 1003 is provided with a second through hole 1007, and the outer wall of the connecting part 1002 is provided with a second notch 1008, which is in communication with the second through hole 1007. The second through hole 1007 is coaxially arranged with the illumination optical fiber 4 in the image fiber seat fixing cover 6. The illumination light source extends into the second through hole 1007 through the second notch 1008 and reaches the front end of the second through hole 1007. Further, the illumination light source can be an LED lamp. The coaxial arrangement of the second through hole 1007 and the illumination optical fiber 4 can ensure that the light source is effectively transmitted to the illumination optical fiber 4.

[0096] Embodiment 2

[0097] In the present application, the camera part further comprises a focusing dial 9, and the ocular adapter 11 is connected in the axial direction of the outer cylinder 10 and is movable along the axial direction of the outer cylinder 10, and the cylinder wall of the outer cylinder 10 is provided with a slot; the focusing dial 9 is sleeved on the outer wall of the outer cylinder 10, and the inner wall of the focusing dial 9 is provided with a second groove 901, and the outer wall of the ocular adapter 11 is connected with an adjusting rod; the top end of the adjusting rod passes through the slot of the outer cylinder 10 and is located in the second groove 901; the direction of the slot 1004 is inclined to the axial direction of the outer cylinder 10, and when the focusing dial 9 rotates, the ocular adapter 11 can move along the axis of the outer cylinder 10 to approach or move away from the rear end of the image fiber 1.

[0098] In use, the user rotates the focusing dial 9 manually to realize the focusing function. The inner wall of the focusing dial 9 is provided with a second groove 901, which is in contact with the top end of the adjusting rod. When the focusing dial 9 rotates, the adjusting rod will rotate with the focusing dial 9 due to the existence of the second groove 901. Because the slot 1004 is arranged obliquely to the axial direction of the outer cylinder 10, when the focusing dial 9 rotates, the adjusting rod will not only rotate with the focusing dial 9, but also move along the direction of the slot 1004. The bottom end of the adjusting rod is connected with the ocular adapter 11. With the movement of the adjusting rod in the slot 1004, the ocular adapter 11 will move along the axial direction of the outer cylinder 10, i.e. approach or move away from the rear end of the image fiber 1, so as to change the focal point position and achieve the purpose of focusing.

[0099] The present application utilizes the cooperation of the focusing dial 9, the adjusting rod and the slot of the cylinder wall of the outer cylinder 10, so that the design of the whole focusing mechanism is more compact, saves space and is conducive to the development of small-sized products.

[0100] In some further embodiments, the adjusting rod is a screw. The slotted groove and the outer barrel are inclined at an angle of 45° in the axial direction. By designing the slotted groove at an angle of 45°, the adjusting rod can move a greater distance in the axial direction of the outer barrel 10 under the same rotation angle. This allows the product to achieve a greater focusing range under a smaller rotation angle change. The 45° angle design helps to optimize the force transmission efficiency. When the user rotates the focusing dial 9, the force can be more effectively converted into the axial movement of the adjusting rod, reducing the loss of force and making the focusing process smoother. The 45° inclined slotted groove design can enhance the stability of the structure. During the focusing process, the adjusting rod is not only subjected to a force perpendicular to the axial direction, but also a force along the direction of the slotted groove. The combination of these forces can better maintain the stability of the adjusting rod and the eyepiece adapter lens 11, reducing shaking and deviation.

[0101] Further, the camera part further comprises a focusing dial fixing cover 14, which is sleeved on the outer wall of the outer barrel 10 and fixedly connected thereto. The focusing dial 9 is located between the front ends of the focusing dial fixing cover 14 and the handle shell 13.

[0102] Embodiment 3

[0103] The present embodiment provides a connection structure of a breast ductoscope and a camera. The present embodiment explains and expands on Embodiment 1. As shown in Figure 1 and Figure 2 The present embodiment provides a connection structure of a breast ductoscope and a camera. The present embodiment explains and expands on Embodiment 1. As shown in

[0104] The camera part comprises a focusing dial 9, an outer barrel 10, an eyepiece adapter lens 11, a camera device 12, a handle shell 13, a focusing dial fixing cover 14, and a handle tail cover 15. The camera device 12 comprises a CMOS fixing seat 1201, a filter 1202, a lens light-shielding pad 1203, and a CMOS imaging system 1204 arranged in sequence.

[0105] As a specific design scheme:

[0106] As shown in Figure 3 and Figure 4As shown, the fiber optic base 3 has a three-section cylindrical structure, including a front section 301, a middle section 302, and a rear section 303 with increasing outer diameters. The front section 301 and the middle section 302 are connected by a small hole 304. The rear section 303 has a recessed annular platform 305 at its end opening. The front end of the fiber optic mount 5 is in close contact with the annular platform 305 on the fiber optic base 3, and the rear end is exposed. The fiber optic mount fixing cover 6 covers the exposed part of the fiber optic mount 5, and the front end face of the fiber optic mount fixing cover 6 contacts the end face of the rear section 303 of the fiber optic base 3 and is connected by screws (e.g., ...). Figure 7 (As shown).

[0107] The rear end of the main lens tube 2 is horizontally inserted into the small hole 304 in the fiber optic mount 3; a first notch 3031 is provided on the outer wall of the rear section 303 of the fiber optic mount 3, and a first through hole 602 is provided on the cover of the fiber optic mount fixing cover 6 (e.g., Figure 6 As shown), the tip of the illumination fiber 4 passes through the first through hole 602 on the image fiber holder fixing cover 6, and then passes through the first notch 3031 into the main mirror tube 2, and surrounds the outer periphery of the image fiber 1. The tip of the image fiber 1 is connected to the self-focusing imaging objective lens 101. The outer wall of the main mirror tube 2 is also sequentially fitted with the inner tube 201 of the main mirror support tube and the outer tube 202 of the main mirror support tube (as shown). Figure 2 As shown in the diagram, the front ends of both are flush with the front end of the fiber optic mount 3. The front ends of the inner tube 201 and outer tube 202 of the primary lens support tube are flush with the front end of the fiber optic mount 3, ensuring alignment and coordination between the various components. Through the multi-layer tube support structure, the stress on the primary lens tube during use can be effectively distributed, reducing excessive local stress and extending the service life of the primary lens tube and its related components.

[0108] like Figure 5 As shown, the outer wall of the fiber optic mount 5 is provided with a protruding ridge 501, and the inner wall of the fiber optic mount fixing cover 6 is provided with a first groove 603 (as shown). Figure 6 As shown, the protruding rib 501 and the first groove 603 correspond in shape. The fiber optic mounting cover 6 covers the exposed part of the fiber optic mount 5. By placing the protruding rib 501 in the first groove 603, the position of the fiber optic mount 5 is fixed.

[0109] like Figure 8 , Figure 9 and Figure 10As shown, the outer cylinder 10 includes an outer cylinder body 1001, a connecting part 1002, and an inner cylinder body 1003. The connecting part 1002 is connected to the rear end face of the inner cylinder body 1003. The inner cylinder body 1003 is provided inside the outer cylinder body 1001, and the outer cylinder body 1001 is fitted around the front end of the outer circumference of the inner cylinder body 1003. The outer walls of the outer cylinder body 1001 and the inner cylinder body 1003 are provided with through slots 1004. The inner cylinder body 1003 is provided with a central hole 1005. The front end of the eyepiece adapter lens 11 is horizontally inserted into the outer cylinder body 1001 from one end of the connecting part 1002 of the outer cylinder 10, and its front end passes through the central hole 1005. The outer wall of the eyepiece adapter lens 11 can be connected to an adjusting rod through the slot 1004. The inner wall of the focusing wheel 9 is provided with a second groove 901 (e.g., ...). Figure 11 As shown, the focusing dial 9 is fitted on the outer wall of the outer cylinder 1001 of the outer cylinder 10, and the adjusting rod connected to the outer wall of the eyepiece adapter 11 is located in the second groove 901. When the focusing dial 9 rotates, it can drive the adjusting rod to move in the second groove 901, so that the eyepiece adapter 11 can move back and forth to adjust the focal length.

[0110] The rear end of the outer cylinder 10 is connected to the camera device 12 through the connecting part 1002, the front end is inserted through the rear end of the handle housing 13, and the outer cylinder 1001 protrudes from the front end of the handle housing 13. The outer cylinder 10 is fixedly connected to the front end of the handle housing 13 through the connecting part 1002.

[0111] The inner cylinder 1003 of the outer cylinder 10 has a second horizontal through hole 1007 inside, and the outer wall of the connecting part 1002 has a second notch 1008. The lighting source extends into the second through hole 1007 through the second notch 1008 and reaches the front end of the second through hole 1007. Furthermore, the lighting source can be an LED light.

[0112] like Figure 1 and 2 As shown, the focusing wheel fixing cover 14 is fitted onto and fixedly connected to the outer wall of the outer cylinder 10. The focusing wheel 9 is located between the front end of the focusing wheel fixing cover 14 and the handle housing 13, and the position of the focusing wheel 9 is fixed by the focusing wheel fixing cover 14. The handle tail cover 15 is open at one end and closed at the other end, with the open end connected to the rear end of the handle housing 13; preferably, the open end is connected to the rear end of the handle housing 13 by threads.

[0113] like Figure 1 and Figure 2As shown, the camera device 12 includes a CMOS fixing seat 1201, a filter 1202, a lens shading pad 1203, and a CMOS imaging system 1204 arranged in sequence. The CMOS imaging system 1204 is installed on the side of the CMOS fixing seat 1201, and the filter 1202 and the lens shading pad 1203 are located therebetween. The CMOS fixing seat 1201 is provided with a protruding cylindrical structure 12011 at the front end. By inserting the cylindrical structure 12011 into the connecting portion 1002 of the outer cylinder 10 and then fixedly connecting through a connecting device, the connection between the outer cylinder 10 and the camera device 12 is achieved. Preferably, the connecting device is a screw. The outer wall of the CMOS fixing seat 1201 is provided with a third notch 12012 for the passage of wires. The front end of the wires is connected to the illumination light source for power supply.

[0114] The rear end of the image fiber seat fixing cover 6 is provided with a boss 601 (as shown in Figure 6 The inner cylinder body 1003 of the outer cylinder 10 is provided with a bayonet 1006 corresponding in shape to the boss 601 (as shown in Figure 8 The fiber scope and the camera are positioned and connected by inserting the boss 601 into the bayonet 1006, and are fixed by the tightening hand wheel 7 and the locking nut 8. The specific structure is as described in Embodiment 1.

[0115] It is worth noting that the outer peripheral dimension of the connecting portion 1002 is larger than the outer peripheral dimension of the outer cylinder body 1001. The outer cylinder body 1001 is sleeved on the front end of the outer periphery of the inner cylinder body 1003. The connecting portion 1002 is located in the handle housing 13 and is connected to the front end of the handle housing 13 by a screw. The inner cylinder body 1003 is exposed from the front end of the handle housing 13. The inner diameter of the outer cylinder body 1001 and the outer diameter of the image fiber seat fixing cover 6 are matched. When the fiber scope and the camera are connected, the outer ring of the image fiber seat fixing cover 6 is connected to the inner ring of the outer cylinder body 1001, and the rear end face of the image fiber seat fixing cover 6 is attached to the front end face of the inner cylinder body 1003.

[0116] The larger outer peripheral dimension of the connecting portion 1002 provides stronger mechanical support and enhances the strength of the connection point. This design can effectively prevent loosening or falling off caused by external forces during use. The connecting portion 1002 is fixed to the front end of the handle housing 13 by a screw. This connection method is not only firm and reliable, but also ensures the stability after long-term use, reducing the risk of loosening caused by vibration or impact.

[0117] The inner cylinder body 1003 is exposed from the front end of the handle housing 13, which can conveniently connect with other components (such as the image fiber seat fixing cover 6), improving the convenience of assembly and disassembly.

[0118] The rear end surface of the image fiber seat fixing cover 6 is attached to the front end surface of the inner cylinder body 1003: this attachment design not only ensures the close contact between the two components, but also reduces the gap in the middle, improving the stability and sealing of the optical system.

[0119] The inner diameter of the outer cylinder body 1001 is matched with the outer diameter of the image fiber seat fixing cover 6, and this size matching design ensures that the image fiber seat fixing cover 6 can be accurately inserted into the outer cylinder body 1001, avoiding the misalignment problem caused by size mismatch, and improving the assembly precision.

[0120] Further, the inner diameter of the outer cylinder body 1001 is matched with the outer diameter of the image fiber seat fixing cover 6, and the inner diameter of the outer cylinder body 1001 can be 0.1mm-0.5mm larger than the outer diameter of the image fiber seat fixing cover 6. During use, the fiber scope part and the camera handle part are directly aligned and connected to the bayonet, and the handle tee joint and the sheath joint are assembled, and the focusing dial on the camera handle is adjusted to clear imaging.

[0121] Embodiment 4

[0122] Based on the fiber scope and camera connection structure provided in embodiments 1 to 3, this embodiment provides a breast ductoscope and camera connection method, including fiber scope part assembly, camera part assembly, and fiber scope part and camera part combination.

[0123] Fiber scope part assembly process:

[0124] A self-focusing imaging objective 101 is installed at the front end of the image fiber 1, and an illumination optical fiber 4 is connected to the outer periphery of the front end of the image fiber 1; the rear end of the image fiber 1 is inserted through the center hole of the image fiber seat 5, and the rear end of the image fiber 1 protrudes from the center hole of the image fiber seat 5 by 0.05-0.15mm.

[0125] The self-focusing imaging objective 101 is inserted through the image fiber seat base 3 and protrudes from the front end of the image fiber seat base 3, the front end of the image fiber seat 5 is installed into the rear end of the image fiber seat base 3, the rear end of the image fiber seat 5 is exposed, the image fiber seat fixing cover 6 covers the exposed part of the image fiber seat 5, and is connected with the image fiber seat base 3.

[0126] Camera part assembly process:

[0127] The camera device 12 is connected to the rear end of the outer cylinder 10, the eyepiece adapter lens 11 is connected to the front end of the outer cylinder 10, the outer cylinder 10 and the handle shell 13 are connected, and the rear end of the outer cylinder 10 is located in the handle shell 13, and the front end of the outer cylinder 10 is exposed from the front end of the handle shell 13.

[0128] Fiber scope part and camera part combination.

[0129] The rear end of the image fiber seat fixing cover 6 and the front end of the outer cylinder 10 are connected through the plug-in structure, and the fiber mirror part and the camera part are connected and fixed through the fixing device; when the fiber mirror part and the camera part are connected, the rear end of the image fiber 1 is close to the ocular adapter lens 11.

[0130] The combination of the fiber mirror part and the camera part further includes the following process:

[0131] The boss 601 on the rear end face of the image fiber seat fixing cover 6 is inserted into the bayonet 1006 on the front end face of the outer cylinder 10.

[0132] The hollow structure of the fastening hand wheel 7 is sleeved on the image fiber seat base 3, the inner wall of the annular protruding part 701 at the front end in the fastening hand wheel 7 abuts against the annular step structure on the image fiber seat base 3, and the threaded part at the rear end in the fastening hand wheel 7 is screwed with the threaded connection on the front end of the outer periphery of the outer cylinder 10. Specifically, the assembly process and principle of the fiber mirror and camera connection structure are as follows:

[0133] I. Fiber mirror part process:

[0134] 1. After cutting the image fiber 1, polish both ends, install the self-focusing imaging objective 101 on the end face of the image fiber 1 and solidify, cut, polish and clean the main mirror tube, count a plurality of illumination optical fibers, prepare the glue, then perform the tube insertion process of the objective assembly (the illumination optical fiber is inserted into the main mirror tube 2 and closely adheres to the inner wall of the main mirror tube 2, the self-focusing imaging objective 101 with the image fiber 1 is inserted into the main mirror tube 2 and wrapped by the illumination optical fiber), after waiting for the glue to solidify, polish the objective, and after polishing, check the imaging.

[0135] 2. Clean the image fiber seat 5, apply glue to the other end of the image fiber 1 and insert it into the center hole of the image fiber seat 5, make the image fiber end face protrude from the center hole of the image fiber seat by 0.1mm, then install the image fiber protection sheet and glue it (the outer periphery of the image fiber protection sheet is pasted in the connecting hole at the rear end of the image fiber seat 5 by glue, and the image fiber protection sheet is used to protect the image fiber 1 protruding from the image fiber seat).

[0136] 3. Insert the front end of the assembled component (on the side of the self-focusing imaging objective lens 101) into the small hole 304 (the small hole 304 is a round hole) from the rear end of the fiber optic mount 3. Then, place the front end of the fiber optic mount 5 on the annular platform 305 of the fiber optic mount 3 (the diameter of the annular platform is about 0.1 mm larger than the outer diameter of the boss at the front end of the fiber optic mount 5). Clean the first through hole 602 (the first through hole 602 is a round hole) on the fiber optic mount fixing cover 6. Insert the illumination fiber optic cable into the first through hole 602. Finally, align the first groove 603 on the fiber optic mount fixing cover 6 with the protrusion 501 on the fiber optic mount. Tighten the two fastening screws on the left and right to fix the fiber optic mount fixing cover 6 to the fiber optic mount 3 (the fiber optic mount fixing cover 6 has symmetrical through holes on the left and right, and the fiber optic mount 3 has symmetrical screw holes on the left and right; the fastening screws pass through the through holes of the fiber optic mount fixing cover 6 and are inserted into the screw holes of the fiber optic mount 3).

[0137] 4. Prepare the glue, and put the outer tube 202 and the inner tube 201 of the primary lens support tube onto the primary lens tube 2 in sequence and glue them together to cure, so that the front end face of the outer tube 202 and the inner tube 201 of the primary lens support tube are on the same plane as the front end face of the fiber mount base 3.

[0138] 5. Insert the fastening handwheel 7 onto the front end of the fiber optic base 3, and then screw the front locking nut 8 into the thread at the front end of the fiber optic base 3, so that the fastening handwheel 7 can be freely turned on the fiber optic base.

[0139] II. Manufacturing process of the camera handle:

[0140] 1. Install the CMOS imaging system 1204 on the CMOS mount 1201, adjust the focal plane and viewing axis angles, and then fix it.

[0141] 2. Insert the eyepiece adapter 11 into the outer cylinder 10, align the M2 threaded hole on the eyepiece adapter 11 with the slot 1004 on the outer cylinder 10, and screw in an M2 screw.

[0142] 3. Connect and secure the assembled outer cylinder 10 to the CMOS mounting base 1201 with screws (the CMOS mounting base 1201 is connected to the connecting part 1002 of the outer cylinder 10). Then insert the entire assembly from the rear end of the handle housing 13, align the three openings at the front end of the handle housing 13 with the three threaded holes on the connecting part 1002 of the outer cylinder 10, and tighten the screws to secure it.

[0143] 4. Insert the focusing wheel 9 from the front end of the outer cylinder 10, so that the M2 screw on the eyepiece adapter lens 11 is aligned with the second groove 901 on the focusing wheel 9. Then, insert the focusing wheel fixing cover 14 from the front end of the outer cylinder 10, align the three openings on the focusing wheel fixing cover 14 with the threaded holes on the outer cylinder 101, and screw in the fastening screws.

[0144] 5. Connect the FPC cable of the CMOS imaging system 1204 to the cable on the handle tail cover 15, insert the connected cable into the handle housing 13, and connect the handle housing 13 and the handle tail cover 15.

[0145] Fiber and image fiber separation design: The front ends of both the illumination fiber 4 and the image fiber 1 are encased inside the main lens tube 2. After the tail ends extend from the main lens tube 2, the illumination fiber 4 converges into a single strand and extends out from the slot (first notch 3031) at the tail of the image fiber base 3. The image fiber 1 is inserted into the central hole of the image fiber base 5 along the center line of the image fiber base 3. The illumination fiber 4 extending from the side is passed through the first through hole 602 of φ1.2mm on the image fiber base fixing cover 6. Then, the illumination fiber 4 is passed through a stainless steel tube. After applying glue to the inside and outside of the stainless steel tube, the tube is pushed into the first through hole 602 on the image fiber base fixing cover 6. After the glue cures, the end face of the illumination fiber 4 is ground and polished.

[0146] III. Focusing Principle

[0147] Adjusting the front and back position of the eyepiece inside the outer tube can adjust the clarity of the image, while adjusting the front and back position of the adapter lens inside the outer tube can adjust the size of the image on the display screen.

[0148] IV. Eyepiece focusing method and the function of the adapter lens

[0149] The eyepiece is installed inside the outer tube. The eyepiece tube has an M2 threaded hole, and the outer tube sidewall has a 45° axial groove. Insert the eyepiece into the outer tube, align the threaded hole on the eyepiece tube with the groove on the outer tube sidewall, and screw an M2 screw through the groove into the threaded hole on the eyepiece tube. The eyepiece will then move back and forth along the groove on the outer tube sidewall, adjusting the image sharpness.

[0150] The adapter lens adjusts the size of the image on the CMOS sensor module, which is directly reflected in the change in the size of the image on the display screen.

[0151] V. Sensor assembly requirements and connection between base and lens

[0152] Put the filter and lens shading pad into the CMOS fixing seat in turn, then place the CMOS imaging system on the CMOS fixing seat, screw in two M2 screws, adjust the front and rear and left and right positions of the CMOS imaging system mounting plate on the CMOS fixing seat, ensure that the visual axis and the center line of the CMOS fixing seat coincide, then tighten the two M2 screws to fix the mounting plate, then adjust the three screws at the back of the mounting plate to adjust the parallelism of the CMOS photosensitive surface and the standard image surface, ensure that there is no distortion around the imaging picture, then drop UV glue on the three screws and solidify, prevent the screws from loosening and affecting the parallelism of the photosensitive surface.

[0153] Six, the trend of the light path, the light cone effect, the light path limiting design

[0154] Imaging light path: the external picture passes through the refraction of the self-focusing imaging objective lens to converge on the front end face of the image fiber, the picture is transmitted to the rear end face of the image fiber by using the principle of image fiber conducting light, and then the light is transmitted to the photosensitive device of the CMOS through the refraction of the eyepiece and the adapter lens, and finally converted by the signal output.

[0155] Illumination light path: the fiber mirror part is produced by wrapping the illumination optical fiber around the self-focusing imaging objective lens and the image fiber, and together penetrating into the main mirror tube, and the ends of the optical fiber are gathered together and bonded and solidified on the image fiber seat fixing cover by glue. The illumination optical fiber of the camera handle part extends from the front end face of the outer cylinder to the tail part of the outer cylinder through the hole in the side wall of the outer cylinder, and then extends to the tail part of the handle through the space reserved on the CMOS fixing seat, and finally extends out from the tail sleeve of the handle and is connected to the cold light source main machine to provide illumination light source for the fiber mirror.

[0156] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A ductoscope, characterized in that, include: The camera unit includes an outer cylinder (10) and a handle housing (13), wherein the rear end of the outer cylinder (10) is located inside the handle housing (13), and the front end is exposed at the front end of the handle housing (13); The fiber lens section includes a fiber mount base (3) and a connector. The connector is connected to the rear end of the fiber mount base (3). The rear end of the connector and the front end of the outer cylinder (10) are connected by a plug-in structure, and the fiber lens section and the camera section are connected and fixed by a fixing device.

2. The ductoscope according to claim 1, characterized in that, The plug-in structure includes a plug-in part and a mating part; The insertion part is provided on the rear end face of the connector or the front end face of the outer cylinder (10); the mating part is provided on the front end face of the outer cylinder (10) or the rear end face of the connector. After the fiber lens section and the camera section are connected, the plug-in section is inserted into the mating section, and the rear end face of the connector is in contact with the front end face of the outer cylinder (10).

3. The ductoscope according to claim 2, characterized in that, The insertion part is any one of a pin, a buckle, a mortise, and a boss, and the mating part is any one of a pin hole, a slot, a tenon, and a bayonet.

4. The ductoscope according to claim 1, characterized in that, The fixing device includes a fastening handwheel (7); The fastening handwheel (7) is a hollow structure. The rear end of its inner ring is provided with a threaded part, and the front end is provided with an inwardly protruding annular protrusion (701). The front end of the outer periphery of the fiber optic base (3) has an annular step structure, and the front end of the outer periphery of the outer cylinder (10) is provided with a front thread. The fastening handwheel (7) is fitted on the fiber optic base (3). The inner wall of the front annular protrusion (701) abuts against the annular step structure on the fiber optic base (3), and the threaded part at the rear end is connected to the front thread of the outer periphery of the outer cylinder (10).

5. The ductoscope according to claim 4, characterized in that, The fixing device also includes a locking nut (8), which is fitted onto and connected to the outer wall of the fiber optic base (3), with the rear end face of the locking nut (8) abutting against the front end face of the fastening handwheel (7).

6. The ductoscope according to any one of claims 1-5, characterized in that, The connector includes a fiber optic mount (5) and a fiber optic mount fixing cover (6); The fiber optic mount (5) has a front end and a rear end. The front end of the fiber optic mount (5) is connected to the rear end of the fiber optic mount base (3), and the rear end is exposed outside the fiber optic mount base (3). The fiber optic mounting cover (6) covers the rear end of the fiber optic mount (5) and is connected to the fiber optic mount base (3).

7. The ductoscope according to claim 6, characterized in that, The rear end opening of the fiber optic base (3) is provided with a recessed annular platform (305), and the front end of the fiber optic base (5) is connected to the annular platform (305). The outer periphery of the rear end of the fiber optic mount (5) is provided with a protruding ridge (501), and the inner wall of the fiber optic mount fixing cover (6) is provided with a first groove (603). The rear end of the fiber optic mount (5) is inserted into the inner hole of the fiber optic mount fixing cover (6), and the protruding ridge (501) is located in the first groove (603). After the fiber optic lens and the camera lens are connected, the rear end face of the fiber optic mounting cover (6) and the front end face of the outer cylinder (10) are attached.

8. The ductoscope according to claim 6, characterized in that, The fiber optic section also includes a main lens tube (2) and an illumination fiber optic filament (4). The main lens tube (2) is connected to the front end inside the image fiber base (3) and is partially exposed. The rear end of the image fiber (1) is connected inside the image fiber holder (5) and protrudes from the rear end of the image fiber holder (5); the rear end of the illumination fiber filament (4) is connected inside the image fiber holder fixing cover (6) and is flush with the rear end face of the image fiber holder fixing cover (6); the front end of the image fiber (1) and the front end of the illumination fiber filament (4) are both located at the front end inside the main lens tube (2).

9. The ductoscope according to claim 6, characterized in that, The outer cylinder (10) includes an outer cylinder body (1001), a connecting part (1002) and an inner cylinder body (1003). The connecting part (1002) is connected to the rear end face of the inner cylinder body (1003), and the outer peripheral dimension of the connecting part (1002) is larger than the outer peripheral dimension of the inner cylinder body (1003). The connecting part (1002) is located inside the handle housing (13) and is fixedly connected to the front end of the handle housing (13); the inner cylinder (1003) protrudes from the front end of the handle housing (13); The outer cylinder (1001) is fitted around the front end of the outer periphery of the inner cylinder (1003), and the inner diameter of the outer cylinder (1001) is compatible with the outer diameter of the fiber optic mounting cover (6); the outer walls of the outer cylinder (1001) and the inner cylinder (1003) are provided with through slots (1004). After the fiber lens section and the camera section are connected, the outer ring of the fiber seat fixing cover (6) is connected to the inner ring of the outer cylinder (1001), and the rear end face of the fiber seat fixing cover (6) is attached to the front end face of the inner cylinder (1003).

10. The ductoscope according to claim 9, characterized in that, The inner cylinder (1003) is provided with a second through hole (1007), and the outer wall of the connecting part (1002) is provided with a second notch (1008), the second notch (1008) and the second through hole (1007) are connected; The second through hole (1007) and the illumination fiber filament (4) inside the fiber optic mounting cover (6) are coaxially arranged.

11. The ductoscope according to claim 6, characterized in that, The fiber optic base (3) is a three-section cylindrical structure, including a front section (301), a middle section (302) and a rear section (303) with the outer diameter increasing in sequence. The rear section (303) has an indented annular platform (305) at the end opening, and the front end of the fiber optic base (5) is in close contact with the annular platform (305) of the fiber optic base (3). The rear section (303) of the image fiber base (3) has a first notch (3031) on its outer wall. One end of the illumination fiber filament (4) is connected to the image fiber base fixing cover (6), and the other end passes through the first notch (3031) and is connected to the main lens tube (2) on the image fiber base (3).

12. The ductoscope according to claim 1, characterized in that, The camera unit also includes a focus dial (9) and an eyepiece adapter (11). The eyepiece adapter (11) is connected to the outer cylinder (10) along the axial direction of the outer cylinder (10). The outer cylinder (10) has a groove (1004) on its wall. The focusing dial (9) is fitted on the outer wall of the outer cylinder (10), and the inner wall of the focusing dial (9) is provided with a second groove (901). The outer wall of the eyepiece adapter (11) is connected to an adjustment rod; the top of the adjustment rod passes through the slot (1004) and is located in the second groove (901). The slot (1004) is inclined to the axis of the outer cylinder (10). When the focusing wheel (9) is rotated, the eyepiece adapter (11) can move along the axis of the outer cylinder (10) to get closer to or away from the fiber lens.

13. The ductoscope according to claim 12, characterized in that, The camera unit also includes a focus dial fixing cover (14), which is fitted onto the outer wall of the outer cylinder (10) and fixedly connected thereto. The focus dial (9) is located between the front end of the focus dial fixing cover (14) and the handle housing (13).

14. The ductoscope according to claim 1, characterized in that, The rear end of the outer cylinder (10) is connected to a camera device (12), which is located inside the handle housing (13).

15. The ductoscope according to claim 14, characterized in that, The camera device (12) includes a CMOS mounting base (1201), a filter (1202), a lens hood (1203), and a CMOS imaging system (1204) arranged in sequence. The CMOS imaging system (1204) is installed on the side of the CMOS mounting base (1201), and the filter (1202) and the lens hood (1203) are located in the middle of the two. The CMOS mounting base (1201) has a protruding cylindrical structure (12011) at the front end. By inserting the cylindrical structure (12011) into the rear end of the outer cylinder (10) and then fixing it through a connecting device, the connection between the outer cylinder (10) and the camera device (12) is realized.

Images