An endoscope

Abstract

The utility model discloses an endoscope, which includes an FPC cable, a traction wire, a clamp channel tube, a snake bone, a camera and an LED lamp bead. The traction wire passes through the side wall of the snake bone to drive the snake bone to bend; the clamp channel tube and the FPC cable are accommodated in the snake bone; the camera and the LED lamp bead are installed on the FPC cable and are electrically connected to the FPC cable; the FPC cable is spirally wound on the outer wall of the clamp channel tube. The endoscope of the utility model winds the FPC cable on the clamp channel tube, which reduces the stress generated by the elongation and compression of the transmission cable in different bending directions when the snake bone is bent, and can also reduce the traction force of the traction line when the snake bone is bent.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an endoscope. Background Art

[0002] Endoscopes are widely used in industrial and medical detection fields, especially in the medical industry for detection and treatment.

[0003] The distal end of the handheld endoscope can be bent to view the lesions in the human body. The distal end contains a snake bone, which is convenient for bending in different directions. Given the small structural space for installing the snake bone section of the electronic endoscope, it contains many components such as electronic cables, clamp channel tubes, and traction lines. Under the condition of ensuring the strength of the traction line, the smaller the size of the electronic cable and the larger the size of the clamp channel tube, the better it can meet the use requirements of the endoscope.

[0004] Currently, FPC cables are used to centrally install LED lights and cameras. During the bending process of the snake bone, the inner components of the snake bone move relative to each other. When the bending angle of the snake bone is large and the friction resistance between the inner components of the snake bone is too large, the inner components of the snake bone will be repeatedly stretched and compressed to produce fatigue stress. The FPC cable and the snake bone are arranged along the same axis, so they are also bent at the same time, and are subject to a large shear force, making them easily broken or damaged, greatly affecting the reliability and service life of the electronic endoscope. Utility Model Content

[0005] The utility model mainly solves the technical problem of providing an endoscope, spirally winding an FPC cable around a clamp channel tube, and having a certain margin of the FPC cable when the snake bone is bent, thereby reducing the stress on the FPC cable when it is bent.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an endoscope, the endoscope includes an FPC cable, a traction wire, a clamp channel tube, a snake bone, a camera and an LED lamp bead, the traction wire passes through the side wall of the snake bone to drive the snake bone to bend; the clamp channel tube and the FPC cable are accommodated in the snake bone; the camera and the LED lamp bead are installed on the FPC cable and are electrically connected to the FPC cable;

[0007] The FPC cable is spirally wound around the outer wall of the clamp tube.

[0008] Among them, the endoscope also includes a snake bone skin and an endoscope end, the snake bone skin is wrapped around the outer surface of the snake bone, and the camera and the LED lamp beads are both accommodated in the endoscope end.

[0009] Among them, the endoscope also includes an end steel ring, a connecting steel ring and a ferrule, the end steel ring and the connecting steel ring are respectively fixed at the two ends of the snake bone, and the ferrule is sleeved on the end of the endoscope and accommodated in the end steel ring.

[0010] Wherein, the FPC cable includes:

[0011] The wire body has a front side and a back side, and has a circuit structure inside, the wire body includes a main body, a base and an extension, the base is connected to one end of the main body, and the extension is connected to the edge of the base;

[0012] A first pad is disposed on the front side of the base portion and connected to the circuit structure;

[0013] A second pad is disposed on the reverse side of the extension portion and connected to the circuit structure;

[0014] The extension portion can be bent relative to the base portion so that the second pad and the first pad face the same direction and are parallel to each other.

[0015] Wherein, the camera is connected to the first pad and electrically connected to the circuit structure;

[0016] The LED lamp bead is connected to the second solder pad and electrically connected to the circuit structure;

[0017] The extension portion is bent relative to the base portion, and the LED lamp bead and the camera have the same orientation, and a side of the LED lamp bead away from the second solder pad and a side of the camera away from the first solder pad are parallel to each other.

[0018] Wherein, the extension portion has a set length, and the extension portion includes a first section and a second section along the length direction, the first section is connected to the base portion, the second section is connected to an end of the first section facing away from the base portion, and the second solder pad is located on the reverse side of the second section, wherein the first section is bent toward the front direction of the base portion and is located on the side of the camera, the second section is bent toward the front side of the first section, the reverse side of the second section is parallel to the front side of the base portion, and has a set height difference with the side of the camera facing away from the first solder pad.

[0019] There are two extension parts, which are respectively connected to two opposite side edges of the base part and extend in directions away from each other by a set length.

[0020] Wherein, a groove is arranged on an edge of the base portion which is away from the main body portion, and the groove is formed by being recessed from the edge of the base portion toward the main body portion.

[0021] Wherein, the wire body also includes a rear end portion, the rear end portion is connected to an end of the main body portion away from the base portion, and the rear end portion is provided with a handle connection pad.

[0022] Among them, the line body includes a base material layer, an inner insulating layer, a shielding layer and an outer insulating layer, the circuit structure includes a camera circuit and an LED circuit, the circuit structure is arranged on the base material layer, and the inner insulating layer, the shielding layer and the outer insulating layer are sequentially stacked on both sides of the base material layer.

[0023] Compared with the prior art, the endoscope of the utility model has the following beneficial effects: the FPC cable is wound around the clamp tube, which reduces the stress of the transmission cable caused by elongation and compression in different bending directions when the snake bone is bent, and at the same time reduces the traction force of the traction line when the snake bone is bent. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the disassembled structure of the endoscope of the utility model;

[0026] Figure 2 This is a schematic diagram of the FPC cable status before the snake bone is bent;

[0027] Figure 3 This is a schematic diagram of the FPC cable status after the snake bone is bent;

[0028] Figure 4 This is a schematic diagram of the front structure of the FPC cable;

[0029] Figure 5 This is a schematic diagram of the reverse structure of the FPC cable;

[0030] Figure 6 This is a schematic diagram of the assembly status of the FPC cable, camera, and LED lamp beads;

[0031] Figure 7 This is a schematic diagram of the disassembly status of the FPC cable, camera, and LED lamp beads;

[0032] Figure 8 It is a decomposed schematic diagram of some layer structures of the line body;

[0033] Fig. 9 It is a schematic diagram of the cross section of the line body. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the utility model embodiment, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0036] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] See also Figures 1 to 9 , Figure 1 It is a schematic diagram of the disassembled structure of the endoscope of the utility model. The endoscope includes an FPC cable 100, a traction wire 2, a clamp channel tube 3, a serpentine bone 4, a camera 200 and an LED lamp bead 300. The traction wire 2 passes through the side wall of the serpentine bone 4 to drive the serpentine bone 4 to bend; the clamp channel tube 3 and the FPC cable 100 are accommodated in the serpentine bone 4; the camera 200 and the LED lamp bead 300 are installed on the FPC cable 100 and are electrically connected to the FPC cable 100; the FPC cable 100 is spirally wound around the outer wall of the clamp channel tube 3.

[0038] In current endoscopes, the camera module line and the LED light line are integrated into the same cable. The overall diameter of the cable is relatively large, which affects the bending effect of the snake bone part. In addition, the welding process of the camera and the LED light is complicated and difficult to operate, resulting in low welding efficiency, low yield, and poor reliability. The endoscope of the present application uses FPC cables for the electrical connection between the camera and the LED lamp beads of the endoscope, which can effectively reduce the difficulty of connecting the camera and the LED lamp beads, improve the reliability of the connection, and reduce the space occupied. The following is an introduction to the embodiments of the present application in conjunction with the drawings in the specification.

[0039] The difference between the endoscope of the present application and the common endoscope is that the FPC cable 100 is spirally wound on the outer wall of the clamp tube 3. Compared with the previous FPC cable 100 which is set in a straight line, when the snake bone 4 is bent, the FPC cable 100 is subjected to greater stress, and the shear force on the cross section is greater, which is easy to be damaged. In the present application, the FPC cable 100 is set in a spiral, and its length is greater than the connection and the overall length of the snake bone 4. When the snake bone 4 is bent, the bending directions of different sections on the FPC cable 100 are different, the stress is not concentrated, and the force is small. At the same time, due to the longer length, the stress generated by the elongation and compression of the transmission cable in different bending directions is reduced, avoiding the FPC cable 100 from bending, breaking and damage, and at the same time, it can reduce the traction of the traction line when the snake bone is bent.

[0040] The endoscope in the present application also includes a snake bone skin 7 and an endoscope terminal 8. The snake bone skin 7 is wrapped around the outer surface of the snake bone 4 to protect the snake bone 4 and internal components. The camera 200 and the LED lamp bead 300 are both accommodated in the endoscope terminal 8. A accommodating space is provided in the endoscope terminal 8. The end of the FPC cable 100 and the camera 200 and the LED lamp bead 300 are all located in the accommodating space.

[0041] The endoscope in the present application also includes an end steel ring 9, a connecting steel ring 10 and a ferrule 11. The end steel ring 9 and the connecting steel ring 10 are respectively fixed at the two ends of the snake bone 4 to fix and limit the snake bone 4. The ferrule 11 is sleeved on the end of the endoscope and accommodated in the end steel ring 9. Specifically, it is arranged at the distal end of the snake bone 4, so that the ferrule 11 can drive the snake bone 4 to bend when the traction wire 2 is pulled. When the end of the snake bone 4 bends, it is driven by the ferrule 11 as a whole, rather than the traction wire 2 at a single point, so as to avoid excessive local stress.

[0042] Figure 3 This is a schematic diagram of the front structure of the FPC cable of the embodiment of the present application. Figure 4 This is a schematic diagram of the reverse structure of the FPC cable of the embodiment of the present application, refer to Figures 3 to 7The FPC cable 100 of the present application is applied to the camera module of the endoscope. The FPC cable 100 includes a cable body 101, a first solder pad 104 and a second solder pad 105. The cable body 101 has a front side and a back side, and has a circuit structure inside, which is used for connecting the camera 200 and the LED lamp bead 300 in the endoscope.

[0043] The line body 101 includes a main body, a base 102 and an extension 103, wherein the base 102 is connected to one end of the main body, and the extension 103 is connected to the edge of the base 102. The first solder pad 104 is arranged on the front side of the base 102 and connected to the circuit structure, and the second solder pad 105 is arranged on the back side of the extension 103 and connected to the circuit structure. The extension 103 can be bent relative to the base 102 so that the second solder pad 105 and the first solder pad 104 are oriented in the same direction and parallel to each other. Therefore, by arranging the first solder pad 104 on the base 102 and the second solder pad 105 on the extension 103, when applied to the camera module of the endoscope, it can be used to connect the camera 200 and the LED lamp bead 300 respectively, so that the illumination directions of the camera 200 and the LED lamp bead 300 are parallel. It is understandable that the use of FPC to replace cables reduces the volume, and the first pad 104 on the FPC cable 100 can be connected to the camera 200, and the second pad 105 to the LED lamp bead 300 through the reflow soldering process commonly used in the circuit board soldering process. The welding process is simple and the connection is reliable, thereby solving the problem of difficult operation and poor connection reliability of soldering cables by brazing in the existing solution. In addition, the first pad 104 and the second pad 105 are respectively located on the front and back of the cable body 101, which can reduce the impact between the lines and improve stability and safety.

[0044] In some schemes that use FPC flexible circuit boards as transmission lines to connect the camera 200 and the LED lamp beads 300, the connection positions on the FPC flexible circuit boards for connecting the camera 200 and the LED lamp beads 300 are in the same plane. Therefore, after the camera 200 and the LED lamp beads 300 are connected, the height difference between the LED lamp beads 300 and the front end of the camera 200 is too large, which affects the lighting effect, thereby affecting the observation or shooting effect of the camera 200. To solve this problem, some endoscopes are also provided with a light-guiding structure to make the light-emitting surface flush with the front end of the camera 200 or have a suitable height difference, thereby improving the lighting effect, but this scheme causes an increase in the number of components at the end of the endoscope head and occupies space. The extension portion 103 of the embodiment of the present application can be bent relative to the base portion 102 so that the second solder pad 105 and the first solder pad 104 are oriented in the same direction and parallel to each other, so that the lighting directions of the camera 200 and the LED lamp beads 300 are parallel. After the extension portion 103 is bent, on the front side of the base portion 102, the second solder pad 105 is higher than the first solder pad 104. Thus, through the bending of the extension portion 103, the second solder pad 105 and the first solder pad 104 form a height difference required for installing the LED lamp bead 300 and the camera 200, so as to meet the installation requirements of the end of the endoscope lens, and ensure that the distance between the side surface of the LED lamp bead 300 installed on the second solder pad 105 facing away from the second solder pad 105 after bending and the base portion 102 is less than or equal to the distance between the side surface of the camera 200 installed on the first solder pad 104 facing away from the first solder pad 104 and the base portion 102, that is, after installation, the light emitting surface of the LED lamp bead 300 is lower than the shooting surface of the camera 200 or is flush with the shooting surface of the camera 200, which can ensure that sufficient light is provided to the camera 200 while avoiding the LED lamp bead blocking the light of the shooting surface and affecting the shooting effect.

[0045] In addition, after the extension portion 103 is bent, the second solder pad 105 can be moved closer to the camera 200 , that is, after installation, the LED lamp bead 300 is located next to the camera 200 , which can provide sufficient light for the camera 200 and effectively improve the clarity and quality of the shooting.

[0046] The extension portion 103 can be bent relative to the base portion 102 in a variety of ways to form a height difference. As an optional embodiment, the extension portion 103 has a set length, and the specific length can be reasonably configured according to the required height difference between the first pad 104 and the second pad 105. The extension portion 103 includes a first section 106 and a second section 107 along the length direction. The first section 106 is connected to the base portion 102, and the second section 107 is connected to one end of the first section 106 away from the base portion 102. The second pad 105 is located on the reverse side of the second section 107. Among them, the first section 106 can be bent relative to the base part 102, so that the second section 107 corresponds to the first pad 104 higher than the base part 102, and the second section 107 can be bent relative to the first section 106. The second section 107 is bent toward the front direction of the first section 106 to flip the second pad 105 located on the back side of the second section 107 to a set angle, so that the second pad 105 and the first pad 104 are in the same direction and parallel to each other, and in the direction of the front of the base part 102, the second pad 105 is higher than the first pad 104. Therefore, the extension part 103 as a whole realizes the required height difference between the second pad 105 and the first pad 104 through two bends, and makes the second pad 105 and the first pad 104 in the same direction and parallel to each other, and the structure is simple and easy to operate.

[0047] The first section 106 may be bent at an angle of 90° or approximately 90° relative to the base section 102, and the second section 107 may be bent at an angle of 90° or approximately 90° toward the front direction of the first section 106. In specific implementation, the bending angles of the first section 106 and the second section 107 may be reasonably adjusted according to the specific structure of the end of the endoscope head, and it is only necessary to form the required height difference and make the first pad 104 and the second pad 105 parallel to each other and in the same direction. In addition, in some other embodiments, the extension portion 103 may achieve the above-mentioned height difference and pad direction through more bending times, and may be reasonably configured according to specific assembly requirements.

[0048] In some embodiments of the FPC cable 100, the number of the extensions 103 is two, and the two extensions 103 are respectively connected to the opposite side edges of the base 102, and extend in directions away from each other for a set length, so that the cable body 101 as a whole forms a T-shaped or approximately T-shaped shape. After the two extensions 103 are bent, the two second pads 105 can be located on both sides above the first pad 104. Therefore, after the camera 200 and the LED lamp bead are connected to the end of the endoscope head, the two opposite sides of the camera 200 have LED lamp beads 300, so that the illumination is uniform, the formation of shadows is avoided, and it is helpful to improve the clarity of the camera 200 shooting in the body cavity. In addition, the second pads 105 on each extension 103 can be connected to the LED lamp bead 300 respectively, so that two LED lamp beads 300 can be connected in parallel on the same FPC cable 100. Compared with the solution of connecting through a coaxial cable, the number of cables can be reduced, the occupation of the internal volume space can be reduced, and it is beneficial to the miniaturization of the endoscope.

[0049] It is understandable that the head end of the endoscope is usually also provided with a processing device such as a forceps, which is used to process the corresponding parts in the body cavity. Therefore, a corresponding clamp channel tube is also provided to allow the traction mechanism to pass through, thereby connecting the processing device and the external operating mechanism to achieve operation control. In some embodiments of the FPC cable 100 of the present application, a groove 108 is provided on the edge of the base part 102 away from the main body. The groove 108 is formed by being recessed from the edge of the base part 102 toward the main body. The groove 108 can be used for the passage of the clamp channel tube in the later stage, and saves the radial space of the endoscope, which is beneficial to the miniaturization of the endoscope.

[0050] In the above embodiment, the entire wire body 101 can be formed by cutting, so the base portion 102, the extension portion 103 and the main body are a whole, and the groove 108 on the base portion 102 can also be formed by cutting, and the processing technology is simple and easy.

[0051] In some embodiments of the FPC cable 100, the cable body 101 further includes a rear end portion 129, which is connected to the end of the main body away from the base portion 102. With reference to the advancing direction of the endoscope, the base portion 102 is connected to the front end of the main body, and the rear end portion 129 of the cable body 101 is connected to the rear end of the main body. The rear end portion 129 is provided with a handle connection pad 109, which can be used to connect to a handheld device such as an external handle, so that the handle can realize signal transmission with the camera 200 and the LED lamp bead 300 through the FPC cable 100, so that the camera 200 and the LED lamp bead 300 can be operated through the handle.

[0052] The camera module of the present application includes a camera 200, an LED lamp bead 300 and the above-mentioned FPC cable 100, the camera 200 is connected to the first solder pad 104, and is electrically connected to the circuit structure; the LED lamp bead 300 is connected to the second solder pad 105, and is electrically connected to the circuit structure; wherein the extension portion 103 is bent relative to the base portion 102, and the LED lamp bead and the camera 200 have the same orientation, and the side of the LED lamp bead 300 facing away from the second solder pad 105 is parallel to the side of the camera 200 facing away from the first solder pad 104, that is, the light emitting surface of the LED lamp bead 300 is parallel to the shooting surface of the camera 200. The FPC cable 100 of the first embodiment is adopted, the camera 200 is connected to the first solder pad 104 on the FPC cable 100, and the LED lamp bead 300 is connected to the second solder pad 105 on the FPC cable 100. By setting the first solder pad 104 on the base portion 102, the FPC cable 100 can not only reduce the circuit volume, but also simplify the welding process, improve the reliability of the connection, and thus improve the connection efficiency.

[0053] It is understandable that the use of FPC instead of cables reduces the volume, and the connection between the pads on the FPC cable 100 and the camera 200 and the LED lamp bead 300 can be achieved through the reflow soldering process commonly used in the circuit board soldering process. For example, a plurality of solder balls or electrodes 201 are provided at the bottom of the camera 200. During the soldering process, these solder balls or electrodes 201 are reflowed or soldered to the first solder pad 104. The soldering process is simple and the connection is reliable. The reflow soldering of the LED lamp bead 300 is similar.

[0054] Furthermore, it can be known from the FPC cable 100 of the first embodiment that the second solder pad 105 and the first solder pad 104 are oriented in the same direction and parallel to each other through the bending of the extension portion 103, so that the camera 200 and the LED lamp bead 300 are oriented in the same direction, the light emitting surface of the LED lamp bead 300 is parallel to the shooting surface of the camera 200, and the second solder pad 105 and the first solder pad 104 form a height difference required for installing the LED lamp bead 300 and the camera 200, ensuring that the light emitting surface of the LED lamp bead 300 is not higher than the shooting surface of the camera 200 after installation, thereby preventing the LED lamp bead from blocking the light of the shooting surface and affecting the shooting effect. In the camera module of the embodiment of the present application, the FPC cable 100 of the first embodiment is adopted, and the extension portion 103 has a set length. Referring to the previous embodiment, the extension portion 103 may include a first section 106 and a second section 107 along the length direction, the first section 106 is connected to the base portion 102, the second section 107 is connected to the end of the first section 106 away from the base portion 102, and the second pad 105 is located on the back side of the second section 107, wherein the first section 106 is bent toward the front direction of the base portion 102 and is located on the side of the camera 200, so that the LED lamp bead 300 can be installed at a position close to the camera 200 to provide sufficient lighting, and the second section 107 is bent toward the front side of the first section 106, and the back side of the second section 107 is parallel to the front side of the base portion 102, and has a set height difference with the side of the camera 200 away from the first pad 104 (i.e., the shooting surface), to ensure that the light emitting surface of the LED lamp bead 300 is not higher than the shooting surface of the camera 200. The remaining structures of the cable body 101 and the bending method of the extension portion 103 may refer to the description in the previous embodiment.

[0055] In some embodiments of the camera module, two LED lamp beads 300 are included, so the FPC cable 100 may include two extensions 103, which are respectively connected to the opposite side edges of the base 102 and extend in directions away from each other for a set length, so that the cable body 101 forms a T-shaped or approximately T-shaped shape as a whole. After the two extensions 103 are bent, the two second pads 105 can be located on both sides above the first pad 104. Therefore, after the camera 200 and the LED lamp bead 300 are connected, the opposite sides of the camera 200 have LED lamp beads 300, thereby forming uniform illumination, avoiding shadows, and helping to improve the clarity of the camera 200 shooting in the body cavity. In addition, two LED lamp beads 300 can be connected in parallel on the same FPC cable 100. Compared with the solution of connecting through a coaxial cable, the number of cables can be reduced, the internal volume space occupied can be reduced, and it is beneficial to the miniaturization of the endoscope.

[0056] In the camera module of some embodiments, the base part 102 is bent toward the back of the main body to set an angle. During installation, the base part 102 can be bent toward the back of the main body to set an angle, so that the camera 200 and the LED lamp bead 300 are installed in the desired direction. For example, the angle at which the base part 102 is bent relative to the main body toward the back can be 90° or approximately 90°, forming an LED lamp bead 300 and a camera 200 facing forward, which is suitable for a direct-view endoscope; or, the angle at which the base part 102 is bent relative to the main body toward the back can be less than 90°, forming an LED lamp bead 300 and a camera 200 facing obliquely forward, which is suitable for an oblique-view endoscope, and the specific bending angle of the base part 102 can be reasonably configured according to the requirements of the endoscope. In some other embodiments, the base part 102 may not be bent, so that the direction of the LED lamp bead 300 and the camera 200 can form an angle of 90° or approximately 90° with the front of the endoscope, which is suitable for a side-view endoscope.

[0057] An embodiment of the present application provides an endoscope, comprising a head portion and a camera module of the above-mentioned second aspect embodiment, the head portion having a receiving cavity, and the head portion being provided with a supporting portion in the receiving cavity. The camera module is provided in the receiving cavity, and the FPC cable 100 is connected to the supporting portion. The camera module of the above-mentioned second aspect embodiment can not only reduce the volume of the circuit, which is beneficial to the miniaturization development of the endoscope, but also simplify the welding process, improve the reliability of the connection, and thus improve the connection efficiency and yield. By bending the extension portion 103, the camera head 200 and the LED lamp bead 300 are oriented in the same direction and the shooting surface and the light emitting surface are parallel to each other, so that after being connected to the head portion, lighting and observation can be achieved on the same side of the head portion.

[0058] It is understandable that the endoscope generally further includes a snake bone and a handle, the head end is connected to the front end of the snake bone, and the position and orientation of the head end are controlled by operating the bending of the snake bone. The camera module provided in the head end is connected to the handle circuit via the handle connection pad 109 provided at the rear end 129 of the FPC cable 100, so that the handle can realize signal transmission with the camera 200 and the LED lamp bead 300 through the FPC cable 100, so that the camera 200 and the LED lamp bead 300 can be operated through the handle. The camera 200 and the LED lamp bead 300 are operated by the external handle, so that the camera 200 can be easily photographed and the LED lamp bead 300 can be easily illuminated. In the embodiment of the present application, the reduction in the volume of the signal transmission line of the camera 200 and the LED lamp bead 300 can also reduce the influence on the bending effect of the snake bone part, which helps to improve the accuracy of the snake bone driving the head end to move.

[0059] The cable body 101 of the FPC cable 100 of the present application includes a substrate layer 122, an inner insulating layer 123, a shielding layer 124 and an outer insulating layer 125. The circuit structure inside the cable body 101 includes a camera circuit 126 and an LED circuit 127. The circuit structure is arranged on the substrate layer 122. The inner insulating layer 123, the shielding layer 124 and the outer insulating layer 125 are sequentially stacked on both sides of the substrate layer 122. Among them, the substrate layer 122 can be a copper substrate 128, the shielding layer 124 can be made of copper foil, the inner insulating layer 123 and the outer insulating layer 125 are made of insulating materials for the insulation of the shielding layer 124, and the inner insulating layer 123 can also be provided with an adhesive layer for bonding the substrate layer 122 and / or the shielding layer 124. Specifically, the substrate layer 122 has a first side surface and a second side surface corresponding to the front and back surfaces, respectively. The camera circuit 126 is disposed on the first side surface, and the LED circuit 127 is disposed on the second side surface, thereby isolating the camera circuit 126 from the LED circuit 127, and reducing the influence between different circuit modules. The substrate layer 122 can form the camera circuit 126 and the LED circuit 127 on both sides respectively through a double-sided etching process commonly used in the FPC manufacturing process, thereby realizing double-sided wiring.

[0060] By using the endoscope of the utility model, the FPC cable is wound around the clamp channel tube, which reduces the stress of the transmission cable caused by elongation and compression in different bending directions when the snake bone is bent, and can also reduce the traction force of the traction line when the snake bone is bent.

[0061] The above description is only an implementation method of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present utility model.

Claims

1. An endoscope, characterized in that: The endoscope comprises an FPC cable, a traction wire, a clamp channel tube, a snake bone, a camera and an LED lamp bead. The traction wire passes through the side wall of the snake bone to drive the snake bone to bend; the clamp channel tube and the FPC cable are accommodated in the snake bone; the camera and the LED lamp bead are installed on the FPC cable and are electrically connected to the FPC cable; The FPC cable is spirally wound around the outer wall of the clamp tube.

2. The endoscope according to claim 1, characterized in that The endoscope also includes a snake bone skin and an endoscope end. The snake bone skin is wrapped around the outer surface of the snake bone, and the camera and the LED lamp beads are both accommodated in the endoscope end.

3. The endoscope according to claim 2, characterized in that The endoscope also includes an end steel ring, a connecting steel ring and a ferrule. The end steel ring and the connecting steel ring are respectively fixed to the two ends of the snake bone, and the ferrule is sleeved on the end of the endoscope and accommodated in the end steel ring.

4. The endoscope according to any one of claims 1 to 3, characterized in that: The FPC cable includes: The wire body has a front side and a back side, and has a circuit structure inside, the wire body includes a main body, a base and an extension, the base is connected to one end of the main body, and the extension is connected to the edge of the base; A first pad is disposed on the front side of the base portion and connected to the circuit structure; A second pad is disposed on the reverse side of the extension portion and connected to the circuit structure; The extension portion can be bent relative to the base portion so that the second pad and the first pad face the same direction and are parallel to each other.

5. The endoscope according to claim 4, characterized in that The camera is connected to the first pad and electrically connected to the circuit structure; The LED lamp bead is connected to the second solder pad and electrically connected to the circuit structure; The extension portion is bent relative to the base portion, and the LED lamp bead and the camera have the same orientation, and a side of the LED lamp bead away from the second solder pad and a side of the camera away from the first solder pad are parallel to each other.

6. The endoscope according to claim 5, characterized in that The extension portion has a set length, and the extension portion includes a first section and a second section along the length direction, the first section is connected to the base portion, the second section is connected to an end of the first section facing away from the base portion, and the second solder pad is located on the reverse side of the second section, wherein the first section is bent toward the front direction of the base portion and is located on the side of the camera, and the second section is bent toward the front side of the first section, and the reverse side of the second section is parallel to the front side of the base portion and has a set height difference with the side of the camera facing away from the first solder pad.

7. The endoscope according to claim 4, characterized in that: The number of the extension parts is two, and the two extension parts are respectively connected to the two opposite side edges of the base part and extend in directions away from each other by a set length.

8. The endoscope according to claim 7, characterized in that A groove is arranged on an edge of the base part away from the main body part, and the groove is formed by being recessed from the edge of the base part toward the main body part.

9. The endoscope according to claim 4, characterized in that: The wire body also includes a rear end portion, which is connected to an end of the main body portion away from the base portion, and the rear end portion is provided with a handle connection pad.

10. The endoscope according to claim 4, characterized in that The line body includes a base material layer, an inner insulating layer, a shielding layer and an outer insulating layer. The circuit structure includes a camera circuit and an LED circuit. The circuit structure is arranged on the base material layer. The inner insulating layer, the shielding layer and the outer insulating layer are sequentially stacked on both sides of the base material layer.

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