Electronic endoscope and surgical robot

Abstract

The present invention discloses an electronic endoscope and a surgical robot. The electronic endoscope provided by the present invention includes: a front end portion, the front end portion including a housing and a light source disposed within the housing; a first heat sink; a first heat pipe connected between the front end portion and the first heat sink, the first heat pipe being configured to conduct heat generated by the light source to the first heat sink. The present invention can provide good heat dissipation for the light source of the electronic endoscope, thereby reducing the problem of light attenuation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an electronic endoscope and a surgical robot. Background Art

[0002] Minimally invasive surgery refers to a surgical method that uses modern medical devices and related equipment such as laparoscopes and thoracoscopes to perform surgery inside the human body cavity. Compared with traditional surgical methods, minimally invasive surgery has the advantages of small trauma, light pain, and quick recovery. At present, the endoscopes used in the process of minimally invasive surgery mainly place a light source such as an LED lamp at the front end of the endoscope, and use a cable to provide energy for the LED to make it emit light to provide illumination for the endoscope. However, due to the small volume of the endoscope, it cannot provide good heat dissipation for the LED lamp, so that the LED illumination cannot have a higher brightness, resulting in the problem of light decay. Summary of the Invention

[0003] The main purpose of the present invention is to provide an electronic endoscope and a surgical robot, aiming to solve the technical problem that the existing endoscope is limited by its volume and cannot provide good heat dissipation for the light source, resulting in light decay.

[0004] To achieve the above object, the present invention provides an electronic endoscope, including:

[0005] A front end portion, the front end portion including a housing and a light source disposed in the housing;

[0006] A first heat sink;

[0007] A first heat pipe connected between the front end portion and the first heat sink, the first heat pipe being used to conduct the heat generated by the light source to the first heat sink.

[0008] Preferably, the front end portion has a first outer wall, and a first receiving groove is recessed on the first outer wall, the first receiving groove being used to receive the first end of the first heat pipe; a first accommodating groove is recessed on the first heat sink, the first accommodating groove being used to receive the second end of the first heat pipe.

[0009] Preferably, the image acquisition portion further includes a second heat sink disposed opposite to the first heat sink and a second heat pipe connected between the front end portion and the second heat sink; the front end portion further has a second outer wall disposed opposite to the first outer wall, and a second receiving groove is recessed on the second outer wall, the second receiving groove being used to receive the first end of the second heat pipe; a second accommodating groove is recessed on the second heat sink, the second accommodating groove being used to receive the second end of the second heat pipe.

[0010] Preferably, the first heat sink includes a first body and a first extension piece extending from the first body towards the front end portion, and the first receiving groove is provided on the first extension piece; the second heat sink includes a second body and a second extension piece extending from the second body towards the front end portion, and the second receiving groove is provided on the second extension piece.

[0011] Preferably, a first wire groove is recessed on the inner side of the first body, and / or a second wire groove is recessed on the inner side of the second body; the front end portion further includes a PCB board disposed in the housing and a connecting wire connected to the PCB board, and the first wire groove or the second wire groove is used for the connecting wire to pass through.

[0012] Preferably, the first body is used to be mounted on the second body, so that the first wire groove and the second wire groove are combined to form a wire passing channel for the connecting wire to pass through.

[0013] Preferably, the second body protrudes towards the direction close to the first body with a limiting portion, and the first body is provided with a limiting groove at a position corresponding to the limiting portion. The limiting portion is used to limit the second body from moving towards the light source direction or away from the light source direction when being mounted in the limiting groove.

[0014] Preferably, the front end portion further includes a lens holder for mounting the light source and a shielding cover connected to the lens holder. The shielding cover is located between the first heat pipe and the second heat pipe, and the first heat pipe and the second heat pipe are located between the first heat sink and the second heat sink.

[0015] Preferably, a liquid refrigerant is contained in the first heat pipe and / or the second heat pipe, or the first heat pipe and / or the second heat pipe is a copper pipe.

[0016] Preferably, the first heat sink and / or the second heat sink is tightly connected to the housing.

[0017] Preferably, the front end portion further includes a lens holder disposed in the housing. The lens holder includes a seat body and a heat conducting boss protruding from the seat body. The light source is disposed on the heat conducting boss, and the heat conducting boss is used to conduct the heat generated by the light source.

[0018] Preferably, the heat conducting boss includes a substrate connected to the seat body and a fixing groove recessed on the substrate. The fixing groove is recessed from one side of the substrate away from the lens holder towards the side close to the lens holder, and the fixing groove is used to mount the light source.

[0019] Preferably, the heat-conducting boss includes a substrate connected to the seat body and an aluminum plate fixed on the substrate, and the aluminum plate is used for mounting and fixing the light source.

[0020] Preferably, the front end portion further includes a lens holder and an image sensor disposed in the housing. The lens holder includes a seat body and a heat-conducting boss protruding from the seat body. The seat body is recessed with a mounting groove in a direction towards the heat-conducting boss on a side away from the heat-conducting boss, and the mounting groove is used for accommodating the image sensor.

[0021] Preferably, the front end portion further includes a lens for mounting on the seat body, and the seat body is provided with a first mounting hole for accommodating the lens.

[0022] Preferably, the seat body has a first side surface connected to the heat-conducting boss and a second side surface facing away from the heat-conducting boss and opposite to the first side surface. The first mounting hole penetrates through the first side surface and the second side surface, and the mounting groove communicates with the first mounting hole.

[0023] Preferably, the image sensor includes a first image sensor and a second image sensor. The mounting groove includes a first mounting groove for accommodating the first image sensor and a second mounting groove for accommodating the second image sensor; the number of the first mounting holes is two, and the front end portion further includes a first lens and a second lens, and the first lens and the second lens are respectively used for being mounted into the two first mounting holes; the first image sensor and the second image sensor are respectively used for being mounted into the first mounting groove and the second mounting groove so that the distance between the first lens and the first image sensor is equal to the distance between the second lens and the second image sensor.

[0024] Preferably, the front end portion further includes a PCB board. The seat body extends from the edge of the second side surface in a direction away from the first side surface to form a first extension portion. The PCB board has an abutting surface adapted to the first extension portion, and the first extension portion is used for abutting against the abutting surface.

[0025] Preferably, the PCB board is a double-layer PCB structure or a T-shaped structure.

[0026] Preferably, the front end portion further includes a PCB board disposed in the housing, a lens holder for mounting the light source, and a shielding cover for buckling with the lens holder. The shielding cover and the lens holder enclose a receiving space for accommodating the PCB board.

[0027] Preferably, the lens mount includes a base body for fixing the PCB board, the base body has a first side surface and a second side surface arranged opposite to each other, and the base body extends from the edge of the second side surface in a direction away from the first side surface to form a first extension portion; the shielding cover includes a main body and a second extension portion extending from the edge of the main body toward the direction of the lens mount, and the first extension portion and the second extension portion are buckled together.

[0028] Preferably, the shielding cover further comprises a shielding plate located at one end of the body away from the lens holder, and the shielding plate is provided with a through hole for the connecting wire to pass through.

[0029] Preferably, the shielding plate is further provided with a fine wire hole, the image acquisition unit further comprises a signal ground wire, and the fine wire hole is used for allowing the signal ground wire to pass through.

[0030] Preferably, the front end portion further comprises a lens seat arranged in the shell, the lens seat comprises a seat body for mounting the light source and a lens for mounting on the seat body, and the seat body is provided with a first mounting hole for accommodating the lens.

[0031] Preferably, the lens includes a lens body having a central axis and a stop portion, wherein the stop portion is protruding from an end of the lens body away from the lens mount in a direction away from the central axis, and the stop portion has a first top abutment surface on a side close to the lens mount, and the first top abutment surface is used to limit the lens when the lens body penetrates into the first mounting hole and contacts the lens mount.

[0032] Preferably, the front end portion also includes a lens hood for snapping onto the lens mount, the lens hood includes a hood body, the hood body has an outer side surface away from the lens mount and an inner side surface close to the lens mount, the hood body is provided with a second mounting hole corresponding to the position of the first mounting hole and used to accommodate the stop portion, the second mounting hole passes through the outer side surface and the inner side surface.

[0033] Preferably, the stop portion has a second top abutment surface on the side away from the lens mount, the second mounting hole has a center, the outer surface has a limiting portion extending toward the center at a position corresponding to the second mounting hole, the lens body is used to be installed in the first mounting hole so that the first top abutment surface abuts against the lens mount, and the stop portion is used to be installed in the second mounting hole so that the second top abutment surface abuts against the limiting portion.

[0034] Preferably, the lens mount further comprises a heat-conducting boss protruding from the mount body and used for mounting the light source; the lens cover further comprises a receiving groove for accommodating the light source and the heat-conducting boss, and the receiving groove passes through the outer side surface and the inner side surface.

[0035] Preferably, the cover body extends from the edge of the inner side surface in a direction away from the outer side surface to form a fastening portion. The fastening portion and the inner side surface enclose a receiving space, and the fastening portion is used for fastening to the base body to receive the lens, the light source, and the heat conducting boss in the receiving space.

[0036] Preferably, the front end portion further includes an insulating cover sleeved on the lens holder and the shielding cover, and the housing is sleeved on the insulating cover.

[0037] Preferably, the insulating cover includes an insulating cavity connected to the shielding cover and the housing, an insulating surface located at one end of the insulating cavity away from the lens holder and closing the insulating cavity, and a hollow tube extending from the insulating surface in a direction away from the lens holder. The hollow tube is used for receiving the connecting wire of the light source.

[0038] Preferably, the front end portion further includes a connecting portion provided at one end of the housing away from the light source. The electronic endoscope further includes a driving mechanism, and a joint assembly connected to the connecting portion and the driving mechanism. The joint assembly is used for bending under the driving action of the driving mechanism to drive the image acquisition portion to move; the electronic endoscope further includes an outer heat conducting flexible tube connected to the housing and covering the joint assembly for heat conduction.

[0039] Preferably, the front end portion further includes a PCB board provided in the housing and a connecting wire connected to the PCB board. The first end of the connecting wire is located in the housing, and the second end of the connecting wire is located in the driving mechanism; the electronic endoscope further includes an inner heat conducting flexible tube covering the connecting wire.

[0040] Preferably, the driving mechanism includes a driving portion and a driving wire. One end of the driving wire is connected to the driving portion, and the other end is connected to the joint assembly; the second end of the connecting wire is located in the driving portion, and the portion between the first end and the second end of the connecting wire is located in the joint assembly.

[0041] Preferably, the electronic endoscope further includes a tube body portion with one end connected to the driving portion and the other end connected to the joint assembly. The driving wire and the connecting wire respectively pass through the tube body portion and are connected to the driving portion.

[0042] Preferably, the outer heat conducting flexible tube and / or the inner heat conducting flexible tube is a mesh tube woven by metal wires.

[0043] To achieve the above object, the present invention further provides a surgical robot, and the surgical robot includes the electronic endoscope as described above.

[0044] The electronic endoscope and surgical robot provided by the present invention are provided with a front end portion including a housing and a light source, a first heat sink, and a first heat pipe connected between the front end portion and the first heat sink. The heat generated by the light source is conducted to the first heat sink through the first heat pipe, so as to conduct the heat generated by the light source to one end far from the light source of the electronic endoscope. In this way, good heat dissipation can be provided for the light source of the electronic endoscope, thereby reducing the problem of light attenuation. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a partial exploded structural schematic diagram of the first embodiment of the electronic endoscope of the present invention;

[0046] Figure 2 is Figure 1 the assembled structural schematic diagram of;

[0047] Figure 3 It is a partial assembled structural schematic diagram of the second embodiment of the electronic endoscope of the present invention;

[0048] Figure 4 is Figure 3 the cross-sectional schematic diagram of the complete structure of the electronic endoscope in;

[0049] Figure 5 It is the assembled structural schematic diagram of the third embodiment of the electronic endoscope of the present invention;

[0050] Figure 6 is Figure 1 the structural schematic diagram of the lens holder from a top view angle in;

[0051] Figure 7 is Figure 1 the structural schematic diagram of the lens holder from a bottom view angle in;

[0052] Figure 8 is Figures 1 to 5 the partial structural schematic diagram of an embodiment of any one of the electronic endoscopes in;

[0053] Figure 9 is Figures 1 to 5 the partial structural schematic diagram of another embodiment of any one of the electronic endoscopes in;

[0054] Figure 10 is Figures 1 to 5 the structural schematic diagram of the first embodiment of the PCB board of any one of the electronic endoscopes in;

[0055] Figure 11 is Figures 1 to 5 the structural schematic diagram of the second embodiment of the PCB board of any one of the electronic endoscopes in;

[0056] Figure 12 is Figures 1 to 5Structural schematic diagram of a shielding cover of any one of the electronic endoscopes;

[0057] Figure 13 is Figures 1 to 5 Structural schematic diagram of an insulating cover of any one of the electronic endoscopes;

[0058] Figure 14 is Figures 1 to 5 Structural schematic diagram of a lens of any one of the electronic endoscopes;

[0059] Figure 15 is Figures 1 to 5 Structural schematic diagram of a lens hood and a lens of any one of the electronic endoscopes;

[0060] Figure 16 is Figure 2 Cross-sectional schematic diagram along line A-A;

[0061] Figure 17 is Figure 5 Partial assembled structural schematic diagram of;

[0062] Figure 18 is Figure 17 Structural schematic diagram from another angle;

[0063] Figure 19 is Figure 5 Partial exploded structural schematic diagram of;

[0064] Figure 20 is Figure 19 Exploded structural schematic diagram of the heat dissipation part in;

[0065] Explanation of the reference numerals in the drawings:

[0066]

[0067]

[0068] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0069] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0070] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0071] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In addition, in the present invention, descriptions such as "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0073] The present invention provides a surgical robot, which includes a main operation console and a slave operation device. The main operation console is used to send control commands to the slave operation device according to the doctor's operation to control the slave operation device; the slave operation device is used to respond to the control commands sent by the main operation console and perform corresponding surgical operations. The slave operation device includes a robotic arm, a power mechanism arranged on the robotic arm, and an operating arm. The operating arm is used to extend into the body under the driving action of the power mechanism, perform surgical operations through its distal end instrument, and obtain internal images through its distal end electronic endoscope. The main operation console is also used to display the images obtained by the electronic endoscope.

[0074] As Figure 1 and Figure 2 shown, the present invention provides an electronic endoscope 100, and the electronic endoscope 100 can be a bendable structure or a non-bendable structure. As Figure 3 and Figure 4As shown, when the electronic endoscope 100 has a bendable structure, the electronic endoscope 100 may include an image acquisition unit 12, a joint assembly 13 connected to the image acquisition unit 12, an outer heat-conducting flexible tube 162 covering the joint assembly 13 and connected to the image acquisition unit 12, and a driving mechanism (not shown in the figure) connected to the joint assembly 13.

[0075] Further, as Figure 4 shown, the image acquisition unit 12 includes a housing 1, a light source assembly 3 disposed in the housing 1, a PCB board 6, a connection line 17 connected to the PCB board 6, and a connection portion 11 disposed at one end of the housing 1 away from the light source assembly 3 and connected to the joint assembly 13. The driving mechanism includes a driving portion 14 and a driving wire 18 having one end connected to the driving portion 14 and the other end connected to the joint assembly 13. Among them, the first end of the connection line 17 is connected to the PCB board 6, the second end of the connection line 17 is located in the driving portion 14, and the portion between the first end and the second end of the connection line 17 is located in the joint assembly 13.

[0076] In this embodiment, the driving portion 14 drives the joint assembly 13 to bend, thereby driving the image acquisition unit 12 to move. In one embodiment, the outer heat-conducting flexible tube 162 may be connected to the housing 1, and in another embodiment, the outer heat-conducting flexible tube 162 may be connected to the connection portion 11. The heat generated by the light source assembly 3 is conducted through the outer heat-conducting flexible tube 162 covering the joint assembly 13.

[0077] Further, the electronic endoscope further includes an inner heat-conducting flexible tube 161 covering the connection line 17. The length of the inner heat-conducting flexible tube 161 is not limited in this embodiment. It may extend into the housing 1 and be connected to the PCB board 6, or it may extend into the housing 1 without being connected to the PCB board 6, or it may not extend into the housing 1. The specific setting method can be reasonably selected according to actual needs.

[0078] It can be understood that it is possible to choose to only set the inner heat-conducting flexible tube 161, or to only set the outer heat-conducting flexible tube 162, or to set both the inner heat-conducting flexible tube 161 and the outer heat-conducting flexible tube 162 at the same time. When both the inner heat-conducting flexible tube 161 and the outer heat-conducting flexible tube 162 are set, the heat dissipation effect of the electronic endoscope 100 can be significantly improved through two-way heat conduction. Further, both the inner heat-conducting flexible tube 161 and / or the outer heat-conducting flexible tube 162 are mesh tubes woven from metal wires. Of course, in other embodiments, the inner heat-conducting flexible tube 161 and / or the outer heat-conducting flexible tube 162 may be other flexible heat-conducting materials.

[0079] It can be understood that the joint assembly 13 is formed by connecting a plurality of identical connecting units to form a bendable joint. The driving part 14 is connected to the joint assembly 13 through the driving wire 18, and drives the joint assembly 13 to bend by driving the elongation and contraction of the driving wires 18 connected to different connecting units in the joint assembly 13, thereby driving the image acquisition part 12 to move.

[0080] In one embodiment, a tension spring (not shown in the figure) may be provided between the connecting units of the joint assembly 13, and the stretching direction of the tension spring is the same as the length direction of the driving wire 18. The stiffness of the joint assembly 13 is increased by the tension spring.

[0081] In another embodiment, the electronic endoscope may further include a tube body part 15 with one end connected to the driving part 14 and the other end connected to the joint assembly 13, and the driving wire 18 and the connecting wire 17 respectively pass through the tube body part and are connected to the driving part 14. The stiffness of the joint assembly 13 is increased by the supporting effect of the tube body part.

[0082] When the electronic endoscope 100 has a non-bendable structure, as Figure 5 shown, the electronic endoscope may only include the image acquisition part, and does not include structures such as the joint assembly 13 and the outer heat-conducting flexible tube 162. It can be understood that the electronic endoscope 100 may further include a rotation driving part, and drive the image acquisition part 12 to rotate along the central axis of the housing 1.

[0083] It can be understood that when the electronic endoscope 100 is bendable, it is suitable for single-port surgery; when the electronic endoscope 100 is non-bendable, it is suitable for multi-port surgery. Of course, it is not excluded that a bendable electronic endoscope 100 may also be selected for multi-port surgery. The structure of the electronic endoscope 100 can be reasonably set according to actual needs.

[0084] Such as Figure 1As shown, in one embodiment, the image acquisition unit 12 further includes a lens holder 2 disposed within the housing 1 and used for mounting the light source assembly 3, a lens hood 4 fastened to the lens holder 2 and used for housing the light source assembly 3, an image sensor 5 fixedly arranged within the lens holder 2, fixedly connected to the PCB board 6 and close to one side of the light source assembly 3, a shielding cover 7 fastened to the lens holder 2 on the side far from the lens hood 4, and an insulating cover 8 sleeved on the lens holder 2 and the shielding cover 7. The housing 1 is sleeved on the insulating cover 8. The specific structure of the above image acquisition unit 12 can form the front end portion of the image acquisition unit 12. It can be understood that heat-conducting glue can be filled in the accommodation spaces of the lens holder 2 and the shielding cover 7 to facilitate heat conduction.

[0085] In one embodiment, the internal heat-conducting flexible tube 161 can also be connected to the shielding cover 7 or extend into the heat-conducting glue within the shielding cover 7.

[0086] The housing 1 is a hollow cylindrical structure. Of course, in other embodiments, it can also be of other reasonable shapes. The material of the housing 1 can be stainless steel or the like. It can be understood that when the housing 1 is a hollow cylindrical structure, structures such as the lens hood 4, the lens holder 2, the shielding cover 7, and the insulating cover 8 can be of adapted cylindrical structures. During specific installation, the light source assembly 3, the image sensor 5, and the PCB board 6 can be first fixed to the lens holder 2 to form a first module (not shown in the figure), then the lens hood 4 is fastened to the first module to form a second module (not shown in the figure), then the shielding cover 7 is fastened to the second module to form a third module (not shown in the figure), and finally the housing 1 is fastened to the third module to form the electronic endoscope 100. Optionally, the structure between adjacent modules is a tightly connected structure. For example, it can be a fixing method of interference fit. To further enhance the fixing strength between the modules, adapted snap structures can be provided on the corresponding structures. In this way, the way of series assembly between the modules can improve the assembly efficiency of the electronic endoscope 100. Of course, in other embodiments, part of the structure of the light source assembly 3 and the lens hood 4 can be assembled together to form a first module (not shown in the figure), other structures of the light source assembly 3, the lens holder 2, the image sensor 5, the PCB board 6, and the shielding cover 7 can be assembled together to form a second module (not shown in the figure), the insulating cover 8 and the housing 1 can be assembled together to form a third module (not shown in the figure), and then the first module, the second module, and the third module are assembled together to form the complete electronic endoscope 100. In this way, by first assembling into different modules respectively, the assembly efficiency of the electronic endoscope 100 can also be improved.

[0087] As Figure 6 and Figure 7 shown, the lens holder 2 includes a base body 21, a heat-conducting boss 22 protruding from the base body 21, a first mounting hole 23 provided on the base body 21, and a mounting groove 24 recessed in the base body 21. Specifically, the base body 21 is recessed toward the heat-conducting boss 22 on a side away from the heat-conducting boss 22 to form the mounting groove 24. The position of the mounting groove 24 corresponds to the position of the first mounting hole 23. That is, the mounting groove 24 communicates with the first mounting hole 23. As Figure 8 shown, the light source assembly 3 includes a light source 32 provided on the base body 21 and a lens 33 for being mounted in the first mounting hole 23.

[0088] Further, the image sensor 5 includes a first image sensor (not shown in the figure) and a second image sensor (not shown in the figure). The mounting groove 24 includes a first mounting groove (not shown in the figure) for accommodating the first image sensor and a second mounting groove for accommodating the second image sensor. Correspondingly, the number of the first mounting holes 23 is two. The electronic endoscope 100 further includes a first lens and a second lens corresponding to the first image sensor and the second image sensor respectively. The first lens and the second lens are used for being respectively mounted into the two first mounting holes 23. When the first image sensor and the second image sensor are respectively mounted into the first mounting groove and the second mounting groove, the distance between the first lens and the first image sensor is equal to the distance between the second lens and the second image sensor.

[0089] During installation of this embodiment, first fix the two image sensors 5 on the PCB board 6, and then mount the two image sensors 5 in the mounting groove 24, which not only facilitates the installation of the image sensors 5, but also can prevent the inconsistent installation positions between different image sensors 5, thereby avoiding the phenomenon that the images received by different image sensors 5 are inconsistent, and further improving the safety of the doctor during the operation using the electronic endoscope 100.

[0090] Further, referring to Figure 6The seat body 21 has a first side surface 211 and a second side surface 212 which are arranged opposite to each other. Specifically, when the light source 32 is used as a reference, the first side surface 211 is a side close to the light source 32, and the second side surface 212 is a side away from the light source 32; when the shielding cover 7 is used as a reference, the first side surface 211 is a side away from the shielding cover 7, and the second side surface 212 is a side close to the shielding cover 7. In one embodiment, the first side surface 211 is connected to the heat-conducting boss 22, and the second side surface 212 is arranged on a side away from the heat-conducting boss 22 and opposite to the first side surface 211. The first mounting hole 23 passes through the first side surface 211 and the second side surface 212. The seat body 21 is provided with a mounting groove 24 at a position corresponding to the first mounting hole 23, from the second side surface 212 to a direction close to the first side surface 211. The mounting groove 24 is used to mount the image sensor 5.

[0091] Furthermore, the light source 32 can be disposed on the heat-conducting boss 22, and the heat generated by the light source 32 is conducted to the end of the electronic endoscope 100 away from the light source assembly 3 through the heat-conducting boss 22 via the base 21. In this way, good heat dissipation can be provided for the light source 32 of the electronic endoscope 100, thereby reducing the problem of light decay.

[0092] It should be understood that the present invention does not limit the specific number of the lenses 33, which may be 2 or more. Of course, in other embodiments, there may be only one lens 33. Correspondingly, the number of the light sources 32 and the image sensors 5 is consistent with the number of the lenses 33. Of course, in other embodiments, there may be only one image sensor 5. However, compared with the solution with only one image sensor 5, this embodiment can avoid interference with the image, thereby improving the image quality obtained by the electronic endoscope 100.

[0093] Furthermore, if Figure 7 As shown, the seat body 21 extends from the edge of the second side surface 212 in a direction away from the first side surface 211 to form a first extension portion 25, and the first extension portion 25 and the second side surface 212 are surrounded to form a receiving space 26. Figure 1 , Figure 10 and Figure 11As shown, the PCB board 6 has an abutting surface 60 adapted to the first extension portion 25. When the PCB board 6 enters the accommodation space 26, the first extension portion 25 abuts against the abutting surface 60. In this way, when the PCB board 6 enters the accommodation space 26 under the guiding action of the first extension portion 25, the PCB board 6 and the image sensor 5 can be accurately positioned and installed in the installation groove 24, thereby further improving the installation accuracy of different image sensors 5 and PCB boards 6, and further improving the image quality obtained by the electronic endoscope 100.

[0094] As Figure 7 shown, the diameter of the first mounting hole 23 can be the same as the width of the installation groove 24, or the width of the installation groove 24 is greater than the diameter of the first mounting hole 23. In this way, it is possible to prevent the fixing glue from leaking to the lens 33 during the installation of the module. After the image sensor 5 is fixedly connected to the PCB board 6 and the image sensor 5 is fixed at the installation groove 24, heat-conducting glue can be filled in the accommodation space 26 and other accommodation spaces away from the lens cover 4 direction, thereby further increasing the heat-conducting effect.

[0095] In one embodiment, as Figure 6 shown, the heat-conducting boss 22 includes a substrate 221 connected to the seat body 21 of the lens seat 2 and a fixing groove 222 recessed in the substrate 221. The substrate 221 is recessed from the side away from the lens seat 2 towards the side close to the lens seat 2 to form the fixing groove 222, and the fixing groove 222 is used for installing and fixing the light source 32. Wherein, the height of the light source 32 is the same as the depth of the fixing groove 222, so that the light source 32 is flush with the heat-conducting boss 22.

[0096] In another embodiment, as Figure 9 shown, the heat-conducting boss 22 includes a substrate 221 connected to the lens seat 2 and an aluminum plate 223 fixed on the substrate 221, and the aluminum plate 223 is used for installing and fixing the light source 32.

[0097] Furthermore, as Figure 6 shown, the lens seat 2 has a center line 27, and the lens seat 2 is provided with a wire passing hole 28 for the wire of the light source 32 to pass through. The wire passing hole 28 penetrates the substrate 221 or the wire passing hole 28 is located at a position between the heat-conducting boss 22 and the center line 27. This way, compared with the embodiment where the wire passing hole 28 is located outside the seat body 21, it is possible to avoid the edge of the seat body 21 from being too thin, thereby improving the overall strength of the lens seat 2.

[0098] The material of the lens mount 2 can be materials with good heat conduction performance such as metal and non-metal. For example, the lens mount 2 can be metal copper or non-metal diamond, etc. Optionally, the lens mount 2 is an integrally formed structure.

[0099] It can be understood that the light source 32 can be: visible light, invisible light, or laser and other light sources. In this embodiment, the light source 32 can be visible light such as LED or optical fiber. When using an LED for illumination, the matrix LED is installed at the front end of the electronic endoscope 100, and energy is provided to the LED through a cable to make it emit light, thereby providing illumination for the endoscope; when using an optical fiber for illumination, the light at the distal end is transmitted to the front end of the endoscope through the optical fiber, so that the endoscope obtains illumination. The image sensor can be a CCD (Charge-coupled Device), or a CMOS (Complementary Metal Oxide Semiconductor), etc.

[0100] Such as Figure 10 shown, the PCB board 6 is a stacked double-layer PCB structure. In another embodiment, as Figure 11 shown, the PCB board 6 can also be a T-shaped structure. Specifically, the PCB board 6 includes a first board 61 and a second board 62. The first board 61 is fixedly connected to the image sensor, and the second board 62 is fixedly connected to the first board 61, and the plane where the first board 61 is located is perpendicular to the plane where the second board 62 is located.

[0101] Such as Figure 12 shown, the shielding cover 7 includes a main body 71, a second extension 72 extending from the edge of the main body 71 towards the lens mount 2, and a shielding plate 73 located at one end of the main body 71 away from the lens mount 2. The second extension 72 is used to engage with the first extension 25. As Figure 1 shown, the shielding cover 7 and the lens mount 2 enclose a receiving space 74 to accommodate the PCB board 6. Specifically, the second side surface 212, the first extension 25, and the shielding cover 7 enclose the receiving space 74, and the receiving space 74 is used to accommodate the PCB board 6. Further, as Figure 12As shown, a through hole 75 for the connection line 17 to pass through is provided on the shielding plate 73. It can be understood that the connection line 17 can be the connection line of the light source 32 or the connection line connected to the PCB board 6, and no limitation is made here. The material of the shielding cover 7 can be metal, which can produce a good electromagnetic shielding effect on the electronic components on the internal PCB board 6, so as not to be interfered by the external complex electromagnetic environment, and further ensure the quality stability and reliability of the image obtained by the electronic endoscope 100. In addition, a thin wire hole 76 and a signal ground wire 70 fixed in the thin wire hole 76 can be provided at a position adjacent to the through hole 75 on the shielding plate 73. The thin wire hole 76 is used for the signal ground wire 70 to pass through and weld the signal ground wire 70 fixed in the thin wire hole 76 to further enhance the electromagnetic shielding effect of the shielding cover 7. The number of the thin wire holes 76 can be 1, 2 or more. Of course, in other embodiments, the thin wire hole 76 may not be provided, and the signal ground wire 70 may be directly welded to the shielding plate 73. In another embodiment, as Figure 18 shown, the shielding cover 7 can also be of other shapes. At this time, through holes 75' and thin wire holes 76' are also provided on the shielding plate 73.

[0102] such as Figure 13 shown, the insulating cover 8 includes an insulating cavity 81 connected to the shielding cover 7 and the housing 1, an insulating surface 82 located at one end of the insulating cavity 81 away from the lens holder 2 and closing the insulating cavity 81, and a hollow tube 83 extending from the insulating surface 82 in a direction away from the lens holder 2. The hollow tube 83 extends from the insulating surface 82 in a direction away from the lens holder 2, and the hollow tube 83 is used for the connection line of the light source 32 and / or the connection line 17 connected to the PCB board 6 to pass through. By providing the hollow tube 83, the stress point of the bent connection line 17 can be extended in a direction away from the lens holder 2, and a larger stress area and a larger bending radius can be provided, so that the stress of the connection line 17 is more evenly distributed, and thus it is not easy to cause breakage.

[0103] The insulating cover 8 is located between the housing 1 and the lens holder 2 and is tightly connected to the housing 1 and the lens holder 2. The heat generated by the light source 32 can be conducted to the air through the lens holder 2, the insulating cover 8, and the housing 1 in sequence. Since the shielding cover 7 is connected to the lens holder 2, the insulating cover 8 is also located between the housing 1 and the shielding cover 7 and is tightly connected to the housing 1 and the shielding cover 7. That is, the insulating cover 8 is sleeved on the lens holder 2 and the shielding cover 7, so as to avoid the occurrence of electric leakage of the electronic components of the electronic endoscope 100.

[0104] such asFigure 14 As shown, the lens 33 includes a lens body 331 having a central axis (not shown in the figure) and a stop portion 332. The stop portion 332 is formed by protruding the lens body 331 from one end away from the lens mount 2 in a direction away from the central axis. The stop portion 332 has a first abutting surface 333 on the side close to the lens mount 2 and a second abutting surface 334 on the side away from the lens mount 2. The first abutting surface 333 is used to limit the lens 33 when the lens body 331 is installed in the first mounting hole 23 and abuts against the lens mount 2, so as to prevent the lens 33 from slipping out of the first mounting hole 23.

[0105] As Figure 15 As shown, the lens hood 4 includes a hood body 41, a receiving groove 42 for receiving the light source 32 and the heat-conducting boss 22, and a second mounting hole 43 corresponding to the position of the first mounting hole 23 and for receiving the stop portion 332. The hood body 41 has an outer side surface 411 on the side away from the lens mount 2 and an inner side surface 412 on the side close to the lens mount 2. Among them, the second mounting hole 43 penetrates through the outer side surface 411 and the inner side surface 412. The receiving groove 42 penetrates through the outer side surface 411 and the inner side surface 412.

[0106] Further, the second mounting hole 43 has a center (not shown in the figure). The outer side surface 411 extends in the direction of the center at a position corresponding to the second mounting hole 43 to form a limiting portion 413. The limiting portion 413 is used to abut against the second abutting surface 334 when the stop portion 332 is installed in the second mounting hole 43, so as to limit the lens 33 and prevent the lens from slipping out of the second mounting hole 43.

[0107] Further, the hood body 41 extends from the edge of the inner side surface 412 in a direction away from the outer side surface 411 to form a fastening portion 44. The fastening portion 44 and the inner side surface 412 enclose a receiving space 45. The fastening portion 44 is used to fasten to the lens body 331 to receive the lens 33, the light source 32, and the heat-conducting boss 22 in the receiving space 45.

[0108] Further, as Figure 16As shown, the lens hood 4 further includes a first cover glass (not shown in the figure) respectively covering the second mounting hole 43, and a second cover glass (not shown in the figure) covering the receiving groove 42. A filter 46 fixed above the light source 32 is further provided between the second cover glass and the light source 32. It can be understood that the first cover glass and the second cover glass can be transparent glass structures. In addition, a sealing structure can be provided at the position of the first cover glass and the second mounting hole 43, and at the position of the second cover glass and the first mounting hole 23, to prevent liquid from entering the electronic endoscope 100 through the gap and thus affecting the stable operation of the electronic components. Specifically, the sealing structure can be an O-ring or sealant.

[0109] Further, as Figure 16 shown, the receiving groove 42 further includes a first groove 421 for accommodating the light source 32, a communication groove 422 communicating with the first groove 421 on the side away from the light source 32, and a second groove 423 communicating with the communication groove 422. The second groove 423 is for accommodating the filter 46. The structural setting of the receiving groove 42 can prevent the influence of the sinking design of the light source 32 in the present invention on the illumination of the light source 32.

[0110] As Figures 17 to 20 shown, in an embodiment, the image acquisition unit 12 may further include a heat pipe part 9 connected to the shielding cover 7 and a heat dissipation part 10 connected to the heat pipe part 9. The heat pipe part 9 and the heat dissipation part 10 constitute the rear end part of the image acquisition unit. In other embodiments, the heat pipe part 9 may further extend on one side of the shielding cover 7 to contact the lens holder 2. Among them, the materials of the structures such as the lens holder 2, the shielding cover 7, the heat pipe part 9, the heat dissipation part 10, and the housing 1 are all materials with good heat conduction performance. The heat dissipation part 10 is tightly connected to the housing 1 to conduct the heat generated by the light source 32 to the air in sequence through the lens holder 2, the shielding cover 7, the heat pipe part 9, the heat dissipation part 10, and the housing 1. In this way, by sequentially transferring the heat generated by the light source 32 to the next structure, the temperature gradient between the light source 32 and the housing 1 is reduced, thereby reducing the temperature of the light source 32.

[0111] In one embodiment, the image acquisition unit 12 has an outer wall (not shown in the figure), and a receiving groove 77 is recessed on the outer wall. The receiving groove 77 is used to receive the first end of the heat pipe unit 9; a receiving groove 200 is recessed on the heat dissipation unit 10, and the receiving groove 200 is used to receive the second end of the heat pipe unit 9. It can be understood that the outer wall can be the outer wall structure of the shielding cover 7 or the outer wall structure of the lens holder 2. That is, the receiving groove 77 can be provided on the shielding cover 7 or on structures such as the lens holder 2. Correspondingly, the shielding cover 7 can have a first outer wall and a second outer wall arranged oppositely, or the lens holder can have a first outer wall and a second outer wall arranged oppositely. The following embodiments will be described by taking the case of being provided on the shielding cover 7 as an example.

[0112] The shielding cover 7 may further include an outer wall 78 connected to the second extension portion 72 at one side and connected to the shielding plate 73 at the other side. The outer wall 78 is recessed with a receiving groove 77. The receiving groove 77 is used to receive the first end 91 of the heat pipe unit 9, and a receiving groove 200 is recessed on the heat dissipation unit 10. The receiving groove 200 is used to receive the second end 92 of the heat pipe unit 9. Wherein, the first end 91 of the heat pipe unit 9 is the end close to the lens holder 2, and the second end 92 is the other end far from the lens holder 2. Wherein, a liquid refrigerant is accommodated in the heat pipe unit 9, and the specific heat dissipation principle is as follows:

[0113] Wherein, since a liquid refrigerant is accommodated in the heat pipe unit 9, liquid-gas-liquid conversion can be performed. When the heat generated by the heat source sequentially passes through the lens holder 2 and the shielding cover 7 and reaches the first end 91 of the heat pipe, the liquid refrigerant at the first end 91 of the heat pipe absorbs heat and is converted into gas, and under the action of pressure, it moves along the length direction of the heat pipe towards the second end 92 of the heat pipe. During the movement, heat is continuously transferred from the heat source end towards the heat dissipation unit 10. When the gaseous refrigerant reaches the second end 92 of the heat pipe, since the heat at the second end 92 is taken away by the heat dissipation unit 10, at this time, the heat at the second end 92 decreases, so that the refrigerant at the second end 92 changes from gaseous to liquid state again and flows back to the first end 91 again, thus circulating repeatedly.

[0114] Of course, in other embodiments, the heat pipe can be replaced by a copper tube. At this time, the copper tube is only used as a heat conduction material, and the heat generated by the heat source sequentially passes through the lens holder 2 and the shielding cover 7 and reaches the copper tube, and then the copper tube transfers the heat to the heat dissipation unit 10, thereby reducing the heat of the heat source. The copper tube can be selected as a flexible copper tube.

[0115] It can be understood that when the accommodation groove 77 is provided in the shielding cover 7, in order to increase the fixing strength between the shielding cover 7 and the lens mount 2, the first extension 25 of the lens mount 2 can also be recessed and snap-fitted with the accommodation groove 77.

[0116] Furthermore, the heat pipe part 9 includes two heat pipes arranged oppositely: a first heat pipe 93 and a second heat pipe 94. The outer side wall 78 includes a first outer side wall 781 and a second outer side wall 782 arranged oppositely, and the accommodation groove 77 includes a first accommodation groove 771 and a second accommodation groove (not shown in the figure). The first outer side wall 781 is recessed with the first accommodation groove 771, and the second outer side wall 782 is recessed with the second accommodation groove. The heat dissipation part 10 includes a first heat dissipation fin 101 and a second heat dissipation fin 102 arranged oppositely. The first heat dissipation fin 101 is recessed with a first accommodation groove 103, and the second heat dissipation fin 102 is recessed with a second accommodation groove 104. The first accommodation groove 771 is used to accommodate the first end 91 of the first heat pipe 93, and the first accommodation groove 103 is used to accommodate the second end 92 of the first heat pipe 93. The second accommodation groove is used to accommodate the first end 91 of the second heat pipe 94, and the second accommodation groove 104 is used to accommodate the second end 92 of the second heat pipe 94.

[0117] Of course, in other embodiments, the number of the heat pipes can be multiple. Correspondingly, the number of the heat dissipation fins can also be multiple. It can be understood that the lengths of the heat pipe part 9 and the heat dissipation part 10 can be reasonably set according to actual needs. When the length is relatively long, the heat dissipation effect is relatively good.

[0118] Furthermore, as Figure 20 shown, the first heat dissipation fin 101 includes a first fin body 105 and a first extension fin 112 extending from the first fin body 105 towards the lens mount 2. The first extension fin 112 is recessed with the first accommodation groove 103; the second heat dissipation fin 102 includes a second fin body 107 and a second extension fin 113 extending from the second fin body 107 towards the lens mount 2. The second extension fin 113 is recessed with the second accommodation groove 104.

[0119] A first wire groove 109 is recessed on the inner side of the first sheet body 105, and / or a second wire groove 110 is recessed on the inner side of the second sheet body 107. The first wire groove 109 and / or the second wire groove 110 are used for the connection wire to pass through. That is, only the first wire groove 109 or the second wire groove 110 can be provided, or both the first wire groove 109 and the second wire groove 110 can be provided. When only the first wire groove 109 or the second wire groove 110 is provided, the connection wire passes through the first wire groove 109 or the second wire groove 110. When both the first wire groove 109 and the second wire groove 110 are provided, when the first sheet body 105 is mounted on the second sheet body 107, the first wire groove 109 and the second wire groove 110 are combined to form a wire passing channel 111 for the connection wire to pass through.

[0120] Further, as Figures 17 to 19 shown, the shielding cover 7 is located between the first heat pipe 93 and the second heat pipe 94, and the first heat pipe 93 and the second heat pipe 94 are located between the first heat sink 101 and the second heat sink 102. In this way, the fixed connection among the shielding cover 7, the heat pipe part 9, and the heat dissipation part 10 can be realized without additionally adding a fixing structure.

[0121] Further, as Figure 20 shown, the second sheet body 107 protrudes toward the first sheet body 105 to be provided with a limiting part 115, and the first sheet body 105 is provided with a limiting groove 116 at a position corresponding to the limiting part 115. The limiting part 115 is used for restricting the second sheet body 107 from moving toward or away from the lens holder 2 when being mounted in the limiting groove 116. It can be understood that the limiting groove 116 can also be provided on the second sheet body 107, and the limiting part 115 can protrude on the first sheet body 105. In addition, the protruding manner of the limiting part 115 is not limited to protruding toward the first sheet body in this embodiment. In other embodiments, it can also protrude toward the direction of the second wire groove 110.

[0122] In this embodiment, through the arrangement of the heat pipe part 9 and the heat dissipation part 10, the heat generated by the light source 32 can be conducted to the air successively through the heat pipe part 9, the heat dissipation part 10 and the housing 1, so as to provide a good heat dissipation effect for the electronic endoscope 100. It can be understood that when the electronic endoscope 100 conducts the heat generated by the light source 32 to one end of the electronic endoscope 100 far from the light source assembly 3 through the heat conduction boss at the image acquisition part 12, it can be determined whether to add the structures of the heat pipe part 9 and the heat dissipation part 10 according to specific actual needs. For example, during single-hole surgery, an electronic endoscope 100 that is flexibly bendable and does not have the structures of the heat pipe part 9 and the heat dissipation part 10 can be selected; during multi-hole surgery, an electronic endoscope 100 that is not bendable or bendable but has the structures of the heat pipe part 9 and the heat dissipation part 10 can be selected. If the heat pipe part 9 and the heat dissipation part 10 are added, the heat dissipation effect of the electronic endoscope 100 can be further improved.

[0123] The above are only the optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. An electronic endoscope, characterized in that, The electronic endoscope includes an image acquisition unit, and the image acquisition unit includes: A front end portion, the front end portion comprising a housing, a light source disposed in the housing, a lens mount for mounting the light source, a shielding cover connected to the lens mount and located on a side away from the light source, and a PCB board, the PCB board being disposed in a housing space enclosed by the shielding cover and the lens mount; the housing space is filled with thermal conductive adhesive; a first heat sink; a first heat pipe, one end of which is in contact with the shielding cover and the other end of which is in contact with the first heat sink, the first heat pipe being used to conduct heat generated by the light source to the first heat sink through the shielding cover; The front end portion further includes an image sensor, the lens mount includes a mount body and a heat-conducting boss convexly arranged on the mount body, the mount body is concavely provided with a mounting groove in a direction of the heat-conducting boss on a side away from the heat-conducting boss, and the mounting groove is used to accommodate the image sensor; The front end portion further comprises a lens for mounting on the base, and the base is provided with a first mounting hole for accommodating the lens; The seat body has a first side surface connected to the heat-conducting boss and a second side surface away from the heat-conducting boss and arranged opposite to the first side surface, the first mounting hole passes through the first side surface and the second side surface, and the mounting groove is connected to the first mounting hole; The image sensor includes a first image sensor and a second image sensor, the mounting slot includes a first mounting slot for accommodating the first image sensor and a second mounting slot for accommodating the second image sensor; the number of the first mounting holes includes two, the lens includes a first lens and a second lens, the first lens and the second lens are used to be respectively installed in the two first mounting holes; the first image sensor and the second image sensor are used to be respectively installed in the first mounting slot and the second mounting slot so that the distance between the first lens and the first image sensor is equal to the distance between the second lens and the second image sensor.

2. The electronic endoscope according to claim 1, characterized in that, The shielding cover has a first outer side wall, a first accommodating groove is recessed on the first outer side wall, and the first accommodating groove is used to accommodate the first end of the first heat pipe; the first heat sink is recessed on the first accommodating groove, and the first accommodating groove is used to accommodate the second end of the first heat pipe.

3. The electronic endoscope according to claim 2, characterized in that, The image acquisition unit also includes a second heat sink arranged opposite to the first heat sink and a second heat pipe connected between the shielding cover and the second heat sink; the shielding cover also has a second outer wall arranged opposite to the first outer wall, and the second outer wall is recessed with a second accommodating groove, and the second accommodating groove is used to accommodate the first end of the second heat pipe; the second heat sink is recessed with a second accommodating groove, and the second accommodating groove is used to accommodate the second end of the second heat pipe.

4. The electronic endoscope according to claim 3, characterized in that, The first heat sink includes a first body and a first extension piece extending from the first body towards the front end portion, and the first receiving groove is provided on the first extension piece; the second heat sink includes a second body and a second extension piece extending from the second body towards the front end portion, and the second receiving groove is provided on the second extension piece.

5. The electronic endoscope according to claim 4, characterized in that, A first wire groove is recessed on the inner side of the first body, and / or a second wire groove is recessed on the inner side of the second body; the front end portion further includes a connecting wire connected to the PCB board, and the first wire groove or the second wire groove is used for the connecting wire to pass through.

6. The electronic endoscope according to claim 5, characterized in that, The first body is used to be mounted on the second body, so that the first wire groove and the second wire groove are combined to form a wire passing channel for the connecting wire to pass through.

7. The electronic endoscope according to claim 4, characterized in that, The second body protrudes towards the direction close to the first body to form a limiting portion, and the first body is provided with a limiting groove at a position corresponding to the limiting portion. The limiting portion is used to limit the second body from moving towards the light source direction or away from the light source direction when being mounted in the limiting groove.

8. The electronic endoscope according to claim 3, characterized in that, The shielding cover is located between the first heat pipe and the second heat pipe, and the first heat pipe and the second heat pipe are located between the first heat sink and the second heat sink.

9. The electronic endoscope according to claim 3, characterized in that, The first heat pipe and / or the second heat pipe contains a liquid refrigerant, or the first heat pipe and / or the second heat pipe is a copper pipe.

10. The electronic endoscope according to claim 3, characterized in that, The first heat sink and / or the second heat sink is tightly connected to the housing.

11. The electronic endoscope according to claim 1, characterized in that, The light source is provided on the heat conducting boss, and the heat conducting boss is used to conduct the heat generated by the light source.

12. The electronic endoscope according to claim 11, characterized in that, The heat conducting boss includes a substrate connected to the seat body and a fixing groove recessed on the substrate. The fixing groove is recessed from one side of the substrate away from the lens seat towards the side close to the lens seat, and the fixing groove is used to mount the light source.

13. The electronic endoscope according to claim 11, characterized in that, The heat conducting boss includes a substrate connected to the seat body and an aluminum plate fixed on the substrate, and the aluminum plate is used to mount and fix the light source.

14. The electronic endoscope according to claim 1, characterized in that, The seat body extends from the edge of the second side towards the direction away from the first side to form a first extension portion. The PCB board has an abutting surface adapted to the first extension portion, and the first extension portion is used to abut against the abutting surface.

15. The electronic endoscope according to claim 1, characterized in that, The PCB board is a double-layer PCB structure or a T-shaped structure.

16. The electronic endoscope according to claim 1, characterized in that, The seat body extends from the edge of the second side towards the direction away from the first side to form a first extension portion. The shielding cover includes a body and a second extension portion extending from the edge of the body towards the lens seat direction, and the first extension portion and the second extension portion are buckled together.

17. The electronic endoscope according to claim 16, characterized in that,The shielding cover further includes a shielding plate located at one end of the body away from the lens seat, and a through hole for the connecting wire to pass through is provided on the shielding plate.

18. The electronic endoscope according to claim 17, wherein, A thin wire hole is further provided on the shielding plate. The image acquisition portion further includes a signal ground wire, and the thin wire hole is used for the signal ground wire to pass through.

19. The electronic endoscope according to claim 1, wherein, The lens includes a lens body having a central axis and a stop portion. The stop portion is formed by protruding from one end of the lens body away from the lens mount in a direction away from the central axis. The stop portion has a first abutting surface on a side close to the lens mount, and the first abutting surface is used to limit the position of the lens when the lens body penetrates into the first mounting hole and abuts against the lens mount.

20. The electronic endoscope according to claim 19, wherein, The front end portion further includes a lens hood for fastening to the lens mount. The lens hood includes a hood body. The hood body has an outer side surface on a side away from the lens mount and an inner side surface on a side close to the lens mount. The hood body is provided with a second mounting hole corresponding to the position of the first mounting hole and for receiving the stop portion, and the second mounting hole penetrates through the outer side surface and the inner side surface.

21. The electronic endoscope according to claim 20, wherein, The stop portion has a second abutting surface on a side away from the lens mount. The second mounting hole has a center, and the outer side surface extends a limiting portion in a direction towards the center at a position corresponding to the second mounting hole. The lens body is used to be mounted in the first mounting hole so that the first abutting surface abuts against the lens mount, and the stop portion is used to be mounted in the second mounting hole so that the second abutting surface abuts against the limiting portion.

22. The electronic endoscope according to claim 20, wherein, The light source is arranged on the heat-conducting convex platform. The lens hood further includes a receiving groove for receiving the light source and the heat-conducting convex platform, and the receiving groove penetrates through the outer side surface and the inner side surface.

23. The electronic endoscope according to claim 22, wherein, The hood body extends a fastening portion from the edge of the inner side surface in a direction away from the outer side surface. The fastening portion and the inner side surface enclose a receiving space, and the fastening portion is used to be fastened to the seat body to receive the lens, the light source and the heat-conducting convex platform in the receiving space.

24. The electronic endoscope according to claim 1, wherein, The front end portion further includes an insulating cover sleeved on the lens mount and the shielding cover, and the housing is sleeved on the insulating cover.

25. The electronic endoscope according to claim 24, wherein, The insulating cover includes an insulating cavity connected to the shielding cover and the housing, an insulating surface located at one end of the insulating cavity away from the lens mount and closing the insulating cavity, and a hollow tube extending from the insulating surface in a direction away from the lens mount. The hollow tube is used to receive the connecting wire of the light source.

26. The electronic endoscope according to claim 1, wherein, The front end portion further includes a connecting portion provided at one end of the housing away from the light source. The electronic endoscope further includes a driving mechanism, and a joint assembly connected to the connecting portion and the driving mechanism. The joint assembly is used to bend under the driving action of the driving mechanism to drive the image acquisition portion to move; the electronic endoscope further includes an outer heat-conducting flexible tube connected to the housing and covering the joint assembly for heat conduction.

27. The electronic endoscope according to claim 26, wherein, The front end portion further includes a connecting wire connected to the PCB board. The first end of the connecting wire is located inside the housing, and the second end of the connecting wire is located inside the driving mechanism; the electronic endoscope further includes an inner heat-conducting flexible tube covering the connecting wire.

28. The electronic endoscope according to claim 27, wherein, The driving mechanism includes a driving part and a driving wire. One end of the driving wire is connected to the driving part, and the other end is connected to the joint assembly. The second end of the connecting wire is located inside the driving part, and the part between the first end and the second end of the connecting wire is located inside the joint assembly.

29. The electronic endoscope according to claim 28, wherein, The electronic endoscope further includes a tube body part with one end connected to the driving part and the other end connected to the joint assembly. The driving wire and the connecting wire respectively pass through the tube body part and are connected to the driving part.

30. The electronic endoscope according to claim 27, wherein, The outer heat-conducting flexible tube and / or the inner heat-conducting flexible tube is a mesh tube woven from metal wires.

31. A surgical robot, wherein, The surgical robot includes the electronic endoscope according to any one of claims 1 to 30.

Images