Circuit board, endoscope and its front-end components

Abstract

The present application belongs to the field of medical device technology, and specifically relates to a circuit board, an endoscope and a front-end component thereof. The circuit board is applied to the front-end component of the endoscope, and the circuit board includes a relatively bent shading portion and a first mounting portion, and the first mounting portion is provided with a first electrical contact for welding with the light source of the endoscope, and the shading portion is formed with a first mounting position and a second mounting position on two opposite sides thereof, and the shading portion and the first mounting portion cooperate to form a first mounting position, and the first mounting position is used to accommodate at least part of the light emitting portion of the light source, and the second mounting position is used to accommodate a part of the camera module. When the circuit board of the present application is applied, the shading portion of the circuit board will be located between the light source and the camera module, so that at least part of the light emitted by the light source directed to the camera module will be blocked by the shading portion to reduce the light directed to the camera module, and even to avoid the light from being directed to the camera module, thereby improving the imaging quality of the camera module and facilitating observation by the operator.

Description

Technical Field

[0001] The present application belongs to the field of medical device technology, and specifically relates to a circuit board, an endoscope and a front-end component thereof. Background Art

[0002] An endoscope is a commonly used medical device that can provide doctors with sufficient diagnostic information to treat diseases. The endoscope includes an insertion part that can enter the human body through a human cavity or a surgical incision. An imaging component is provided at the distal end of the insertion part. The imaging component includes a camera module and a light source. The light source can illuminate the diseased area to facilitate the camera module to capture images of the diseased area.

[0003] However, the light emitted by the light source in the traditional imaging component is easy to leak into the camera module, and the light is scattered in the camera module, which can easily lead to the degradation of the imaging quality of the camera module and affect the observation effect. Summary of the invention

[0004] The purpose of this application is to provide a circuit board, an endoscope and a front-end component thereof, which can help solve the problem that light emitted by a light source easily leaks into a camera module.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the present application provides a circuit board for use in a front end assembly of an endoscope, the circuit board comprising a relatively bent shading portion and a first mounting portion, the first mounting portion being provided with a first electrical contact for welding to a light source of the endoscope, a first mounting position and a second mounting position being formed on opposite sides of the shading portion, respectively, the shading portion and the first mounting portion cooperate to form a first mounting position, the first mounting position being used to accommodate at least a portion of a light emitting portion of the light source, and the second mounting position being used to accommodate a portion of a camera module.

[0007] In a second aspect, the present application provides a front end assembly of an endoscope, including a light source and the above-mentioned circuit board, wherein the light source is carried on a first mounting portion.

[0008] In a third aspect, the present application provides an endoscope, comprising an insertion portion and the above-mentioned front end assembly.

[0009] The beneficial technical effects of this application are as follows:

[0010] In the present application, the circuit board includes a relatively bent shading portion and a first mounting portion, and the opposite sides of the shading portion respectively form a first mounting position and a second mounting position. When the front end assembly of the endoscope uses the circuit board of the present application, at least part of the light emitting portion of the light source will be located in the first mounting position, and part of the camera module will be located in the second mounting position. That is to say, the shading portion is located between the light source and the camera module, so that at least part of the light emitted by the light source and directed toward the camera module will be blocked by the shading portion to reduce the light directly directed toward the camera module, and even avoid the light directly directed toward the camera module. Obviously, this can reduce the risk of light leaking into the camera module, and even avoid light leaking into the camera module, thereby improving the imaging quality of the camera module and facilitating observation by the surgeon.

[0011] In addition, the shading portion and the first mounting portion cooperate to form a first mounting position, so when the light source is installed in the first mounting position, the first mounting portion can provide support for the light source. In this way, there is no need to set up other additional supporting structures to support the light source, which can simplify the structure of the front-end component of the circuit board using the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the structure of a circuit board disclosed in an embodiment of the present application;

[0013] Figure 2 For this application Figure 1 The enlarged schematic diagram of point A in the middle;

[0014] Figure 3 An expanded view of a circuit board disclosed in an embodiment of the present application;

[0015] Figure 4 A schematic diagram of a portion of the structure of a front-end component disclosed in an embodiment of the present application;

[0016] Figure 5 A schematic diagram of the structure of the front-end component disclosed in the embodiment of the present application;

[0017] Figure 6 A schematic diagram of the structure of the camera module disclosed in the embodiment of the present application;

[0018] Figure 7 A cross-sectional view of a front end assembly disclosed in an embodiment of the present application;

[0019] Figure 8 A cross-sectional view of a front end assembly disclosed in another embodiment of the present application;

[0020] Fig. 9 For this application Figure 8 The enlarged schematic diagram of point B in the middle;

[0021] Fig.10 Schematic diagram of the partial structure of the endoscope disclosed in the embodiment of the present application Figure 1 ;

[0022] Fig.11 Schematic diagram of the partial structure of the endoscope disclosed in the embodiment of the present application Figure 2 .

[0023] Description of reference numerals:

[0024] 100, shading portion; 101, gap; 110, positioning portion; 200, first mounting portion; 300, connecting portion; 400, second mounting portion; 410, first section; 420, second section; 430, third section; 500, extension portion; 610, first bend; 620, second bend; 710, light source; 720, camera module; 721, lens assembly; 722, front end cap; 7221, frame; 7222, viewfinder; 723, positioning structure; 730, front end shell; 731, avoidance port; 740, padding block; 800, insertion portion; 910, conductive member. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0027] Combine the following Figures 1 to 11 , the circuit board, endoscope and front-end components provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0028] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its components relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0029] See also Figures 1 to 3 The embodiment of the present application discloses a circuit board. Optionally, the circuit board here can be a flexible circuit board or a soft-hard combination board, which is applied to the front end component of the endoscope. The circuit board includes a relatively bent shading portion 100 and a first mounting portion 200. The first mounting portion 200 is provided with a first electrical contact for welding with a light source 710 of the endoscope. The shading portion 100 is formed with a first mounting position and a second mounting position on two opposite sides thereof, that is, the first mounting position and the second mounting position are respectively located on two sides of the shading portion 100 along its own thickness direction, so as to Figure 1 Taking the perspective shown as an example, the first installation position here is the space above the first installation portion 200. Optionally, the bending angle between the light shielding portion 100 and the first installation portion 200 can be a right angle, an acute angle or an obtuse angle.

[0030] The light shielding portion 100 and the first mounting portion 200 cooperate to form a first mounting position, the first mounting position is used to accommodate at least part of the light emitting portion of the light source 710, and the second mounting position is used to accommodate a part of the camera module 720. Optionally, the light emitting portion may include a lamp bead, and a power supply portion may be provided below the lamp bead, the lamp bead is electrically connected to the power supply portion, and the lamp bead can be powered by the power supply portion. The light emitting portion may also include a packaging layer, and the lamp bead is embedded in the packaging layer. The structure of the light source 710 is a prior art, and this application will not repeat it.

[0031] In the present application, the circuit board includes a relatively bent shading portion 100 and a first mounting portion 200, and the opposite sides of the shading portion 100 respectively form a first mounting position and a second mounting position. When the front end assembly of the endoscope uses the circuit board of the present application, at least part of the light emitting portion of the light source 710 will be located in the first mounting position, and part of the camera module 720 will be located in the second mounting position. That is to say, the shading portion 100 is located between the light source 710 and the camera module 720, so that at least part of the light emitted by the light source 710 and directed toward the camera module 720 will be blocked by the shading portion 100 to reduce the light directly directed toward the camera module 720, and even avoid the light directly directed toward the camera module 720. Obviously, this can reduce the risk of light leaking into the camera module 720, and even avoid light leaking into the camera module 720, thereby improving the imaging quality of the camera module 720 and facilitating observation by the surgeon.

[0032] In addition, the shading portion 100 and the first mounting portion 200 cooperate to form a first mounting position, so when the light source 710 is installed in the first mounting position, the first mounting portion 200 can provide support for the light source 710. In this way, there is no need to set up other additional supporting structures to support the light source 710, which can simplify the structure of the front-end component of the circuit board using the present application.

[0033] Furthermore, the addition of the shading portion 100 to the circuit board can provide the circuit board with a larger wiring area, which can provide a larger wiring layer on the circuit board, thereby laying out more circuits; and as the size of the wiring layer increases, the copper in the wiring layer will also increase, which can improve the thermal conductivity of the circuit board.

[0034] In some embodiments, the number of the shading parts 100 and the first mounting parts 200 includes two, each shading part 100 is bent relative to each first mounting part 200, and the two first mounting parts 200 are spaced apart along the arrangement direction between the first mounting position and the second mounting position, and the second mounting position is formed between the two shading parts 100. Of course, the number of the shading parts 100 and the first mounting parts 200 can also be one; or the number of the shading parts 100 is one, and the number of the first mounting parts 200 is two, and this application does not limit the number of the shading parts 100 and the first mounting parts 200.

[0035] In an alternative embodiment, see Figure 1 to Figure 2 In the first direction, the light shielding portion 100 is arranged along the first direction (eg Figure 1 and Figure 5 At least one end of the first mounting portion 200 is beyond the first mounting portion 200, wherein the first direction is in accordance with the arrangement direction between the first mounting position and the second mounting position (as shown by the x arrow line in FIG. Figure 1 and Figure 5 The first direction is perpendicular to the thickness direction of the first mounting portion 200 (as shown by the z arrow line in FIG. Figure 1 and Figure 5 Since the light emitted by the light source 710 will diverge in all directions, the light shielding portion 100 is configured in this embodiment as follows: in the first direction, at least one end of the light shielding portion 100 along the first direction exceeds the first mounting portion 200, which can make the light shielding portion 100 have a larger extension length in the first direction, so that the light shielding portion 100 can block more light diverging along the first direction, thereby improving the shielding effect of the light shielding portion 100 on the light emitted by the light source 710, so as to reduce the amount of light dispersed along the first direction from the side of the light shielding portion 100 along the first direction to the camera module 720, and even avoid the light dispersed along the first direction from the side of the light shielding portion 100 along the first direction to the camera module 720. Of course, in the first direction, at least one end of the first mounting portion 200 along the first direction can also be flush with or exceed the light shielding portion 100, and this application is not limited to this.

[0036] In an alternative embodiment, see Figure 2The bending part between the light shielding part 100 and the first mounting part 200 is the first bending part 610. The light shielding part 100 has a positioning part 110 protruding from the first mounting part 200 along the first direction. There is a gap 101 between the proximal edge of the positioning part 110 and the first bending part 610. In the direction extending from the distal edge to the proximal edge of the positioning part 110, the proximal edge of the positioning part 110 exceeds the first bending part 610. Specifically, Figure 1 Taking the perspective shown as an example, the proximal edge of the positioning portion 110 refers to the lower edge of the positioning portion 110 , and the distal edge of the positioning portion 110 refers to the upper edge of the positioning portion 110 .

[0037] In the case where there is no gap 101 between the proximal edge of the positioning portion 110 and the first bend 610, when the shading portion 100 and the first mounting portion 200 are bent from the unfolded state, since the connection between the shading portion 100 and the first mounting portion 200 is flush with the proximal edge of the positioning portion 110, after the shading portion 100 is bent relative to the first mounting portion 200, the first bend 610 between the two may exceed the proximal edge of the positioning portion 110 in the direction extending from the distal edge to the proximal edge of the positioning portion 110. In this way, when the shading portion 100 and the camera module 720 are positioned using the positioning structure 723, the first bend 610 will cooperate with the positioning structure 723, and the first bend 610 will be a curved structure after being bent, and the curved structure will reduce the positioning accuracy between the shading portion 100 and the camera module 720.

[0038] This embodiment combines Figure 3Taking the circuit board in the unfolded state as an example, the position of the above-mentioned gap 101 is explained. The shading portion 100 and the first mounting portion 200 are different areas of the plate-shaped substrate respectively. At this time, the shading portion 100 and the first mounting portion 200 are located in the same plane. The above-mentioned gap 101 is provided at the bottom edge of the positioning portion 110 of the shading portion 100, so that the bottom edge of the positioning portion 110 is separated from the end face corresponding to the first mounting portion 200. Here, the end face corresponding to the first mounting portion 200 is: the end face of the first mounting portion 200 located on the same side as the positioning portion 110. After the above-mentioned gap 101 is provided, the position of the connection between the part of the shading portion 100 other than the positioning portion 110 and the first mounting portion 200 can be changed, that is, the above-mentioned connection can be made The position of the positioning portion 110 is closer to the distal edge of the light shielding portion 100, so that when the light shielding portion 100 is bent relative to the first mounting portion 200, the first bending portion 610 between the two can be closer to the distal edge of the light shielding portion 100. In this way, after the light shielding portion 100 is bent relative to the first mounting portion 200, the proximal edge of the positioning portion 110 will exceed the first bending portion 610 in the direction extending from the distal edge of the positioning portion 110 to the proximal edge. In this way, when the light shielding portion 100 and the positioning structure 723 on the camera module 720 are used for positioning, the proximal edge of the positioning portion 110 will cooperate with the positioning structure 723, and the proximal edge of the positioning portion 110 is a straight structure, which can improve the positioning accuracy between the light shielding portion 100 and the camera module 720. Of course, there may be no gap 101 between the proximal edge of the positioning portion 110 and the first bending portion 610, and this application is not limited to this.

[0039] It should be noted that in the first direction, when both ends of the shading portion 100 along the first direction extend beyond the first mounting portion 200 , the number of the positioning portions 110 is two, and a gap 101 is provided between the proximal edge of at least one positioning portion 110 and the first bend 610 .

[0040] In practice, the circuit board, the light source 710 and the camera module 720 are all arranged in the front end shell 730. Usually, the layout space in the front end shell 730 in the arrangement direction between the light source 710 and the camera module 720 is relatively cramped. In order to make the circuit board better adapt to the cramped layout space, in an optional embodiment, refer to Figure 1 and Figure 3 The circuit board also includes a connecting portion 300, the connecting portion 300 is bent relative to the first mounting portion 200, the first mounting portion 200 and the connecting portion 300 cooperate to form a first space, the first mounting position and the first space are along the thickness direction of the first mounting portion 200 (such as Figure 1 and Figure 5The bending part between the light shielding part 100 and the first mounting part 200 is the first bending part 610, and the bending part between the connecting part 300 and the first mounting part 200 is the second bending part 620. The second bending part 620 and the first bending part 610 are respectively located on two adjacent sides of the first mounting part 200. Optionally, the bending angle between the connecting part 300 and the first mounting part 200 can be a right angle, an acute angle or an obtuse angle.

[0041] Specifically, Figure 1 Taking the perspective shown as an example, the first space is the space below the first mounting portion 200, the first mounting position is the space above the first mounting portion 200, and the first mounting position and the first space are spaced apart along the thickness direction of the first mounting portion 200. That is, the shading portion 100 is located above the first mounting portion 200, and the connecting portion 300 is located below the first mounting portion 200.

[0042] In this embodiment, the first bend 610 and the second bend 620 are respectively located on two adjacent sides of the first mounting portion 200, that is, the shading portion 100 and the connecting portion 300 are respectively located on two adjacent sides of the plane where the first mounting portion 200 is located, and the connecting portion 300 is not distributed on the extension line of the arrangement path between the first space and the first mounting position. Compared with the embodiment of "the connecting portion 300 is distributed on the extension line of the arrangement path between the first space and the first mounting position", this embodiment can reduce the length dimension of the circuit board in the arrangement direction between the first space and the first mounting position, so that the circuit board can better adapt to the layout space in the front end shell 730 in the arrangement direction between the light source 710 and the camera module 720. In addition, please refer to Figure 3 In the case where the first bend 610 and the second bend 620 are respectively located on two adjacent sides of the first mounting portion 200, if the circuit board does not have a shading portion 100, the area of ​​the plate-like substrate that can form the shading portion 100 will be removed. The present embodiment uses the portion that will be removed to form the shading portion 100, which can improve the utilization rate of the substrate without increasing the cost.

[0043] Of course, the first bending portion 610 and the second bending portion 620 may also be located on two opposite sides of the first mounting portion 200 , respectively, and the present application is not limited to this.

[0044] And / or, in an optional embodiment, see Figure 1, the circuit board is formed by continuous bending of the substrate, the circuit board also includes a connecting portion 300 and a second mounting portion 400, the second mounting portion 400 is located near the first mounting portion 200 and is separated from the first mounting portion 200, the first mounting portion 200 and the second mounting portion 400 are connected through the connecting portion 300, the second mounting portion 400 is provided with a second electrical contact for welding with the camera module 720 of the endoscope, and the first electrical contact and the second electrical contact are located on the same board surface of the substrate. In this embodiment, the connecting portion 300 is bent relative to the first mounting portion 200 and the second mounting portion 400 respectively, the first mounting portion 200 is arranged at intervals on the far side of the second mounting portion 400, the first electrical contact on the first mounting portion 200 and the second electrical contact on the second mounting portion 400 are located on the same board surface of the substrate, so that only one wiring layer needs to be provided on the substrate, which can simplify the structure and manufacturing process of the circuit board. Of course, the first electrical contact and the second electrical contact can also be located on different boards of the circuit board respectively, and this application does not limit this. It should be noted that the camera module 720 may be directly connected to the second electrical contact, or the camera module 720 may be indirectly connected to the second electrical contact via an additionally provided conductive member 910, where the conductive member 910 may be a printed circuit board, etc. It should be noted that the circuit board of the present application may not form the second mounting portion 400, and the present application does not limit this.

[0045] In some embodiments, the second mounting portion 400 includes a first section 410, a second section 420 and a third section 430, the third section 430 is arranged at intervals on the far side of the first section 410, the second section 420 is located between the first section 410 and the third section 430, the second section 420 is bent relative to the third section 430 and the first section 410 respectively, the second electrical contact is arranged on the third section 430, the connecting portion 300 is connected to the first section 410 and is bent relative to the first section 410, and the first electrical contact and the second electrical contact are located on the same board surface of the substrate by the second section 420 bent relative to the first section 410 and the third section 430 bent relative to the second section 420.

[0046] In an optional embodiment, a reflective layer is provided on one side of the shading portion 100 facing the first mounting position, and the reflectivity of the reflective layer is greater than a preset threshold value, so that the reflective layer can reflect all visible light, so that the light reflected by the reflective layer is white light, which does not change the color of the light emitted by the light source 710. In this embodiment, a reflective layer is provided on the shading portion 100, and the reflective layer can reflect white light, so that the light directed to the shading portion 100 can be reflected by the reflective layer out of the front-end component to enhance the light intensity in the irradiation area of ​​the light source 710, so as to facilitate the observation of the lesion. It should be noted that the preset threshold value here can be selected according to the actual situation, as long as the emission layer can reflect all visible light. Optionally, the reflective layer can be made of materials such as white paint, paint, ceramics, glass, and high-reflectivity metal.

[0047] See also Figure 4 The embodiment of the present application further discloses a front end assembly of an endoscope, including a light source 710 and the circuit board described in any of the above embodiments, and the light source 710 is carried on the first mounting portion 200. Since the front end assembly of the embodiment of the present application includes the above circuit board, the front end assembly also has the beneficial effects of the above circuit board, which will not be described in detail here.

[0048] In an alternative embodiment, see Figures 4 to 5 , the distal edge of the light shielding portion 100 extends beyond the light emitting portion in the direction extending from the proximal end to the distal end of the light shielding portion 100, which enables the light shielding portion 100 to have a greater extension length in the direction extending from the proximal end to the distal end of the light shielding portion 100, thereby improving the light shielding effect of the light shielding portion 100. Of course, the light emitting portion may also extend beyond the distal edge of the light shielding portion 100 in the direction extending from the proximal end to the distal end of the light shielding portion 100, and the present application does not limit this.

[0049] The camera module 720 and the light source 710 are arranged in the front end shell 730. The front end shell 730 usually has a light-transmitting portion arranged opposite to the light-emitting portion in the axial direction of the front end shell 730. The light-emitting portion is protected by the light-transmitting portion. The light emitted by the light-emitting portion of the light source 710 will be emitted from the front end shell 730 through the light-transmitting portion. When the light enters the light-transmitting portion, part of the light will be reflected by the light-transmitting portion, and this part of the reflected light may be emitted toward the camera module 720, thereby entering the camera module 720.

[0050] In order to prevent the reflected light from entering the camera module 720, in an optional embodiment, refer to Figures 8 to 9 , the front-end assembly further includes a front-end shell 730 and a camera module 720, the circuit board and the camera module 720 are both arranged in the front-end shell 730, the camera module 720 includes a lens assembly 721 and a front-end cap 722, at least part of the front-end cap 722 is arranged on the far side of the lens assembly 721, and the distal edge of the light shielding portion 100 is flush with or exceeds the distal surface of the lens assembly 721 in the direction extending from the proximal end to the distal end of the light shielding portion 100. In this embodiment, the distal edge of the light shielding portion 100 is flush with or exceeds the distal surface of the lens assembly 721 in the direction extending from the proximal end to the distal end of the light shielding portion 100, so as to reduce the risk of reflected light entering the lens assembly 721. Of course, the distal surface of the lens assembly 721 can also be flush with or exceed the distal edge of the light shielding portion 100 in the direction extending from the proximal end to the distal end of the light shielding portion 100, and this application is not limited to this.

[0051] Furthermore, the front end cap 722 includes a frame 7221, in which a viewfinder 7222 is provided, the frame 7221 and the distal end surfaces of the lens assembly 721 are fitted together, and the distal end of the shading portion 100 is sealed and fitted with the end surface of the frame 7221 facing the lens assembly 721. At this time, the camera module 720 is located in the space formed by the shading portion 100 and the frame 7221, and the shading portion 100 is sealed and fitted with the frame 7221, which can further reduce the risk of reflected light entering the lens assembly 721.

[0052] In some embodiments, the camera module 720 includes a lens assembly 721 and a photosensitive chip, the photosensitive chip is arranged near the lens assembly 721, and the photosensitive chip and the light source 710 are respectively located on opposite sides of the light shielding portion 100, so that the light emitted by the light source 710 does not directly irradiate the photosensitive chip. Therefore, in some optional embodiments, the camera module 720 may not be provided with a housing structure for mounting the lens assembly 721 and the photosensitive chip, which is beneficial to reducing the internal space of the front end shell 730 occupied by the camera module 720, and is beneficial to reducing the size of the front end shell 730.

[0053] In an alternative embodiment, see Figure 6 to Figure 7 , the front-end assembly further includes a front-end shell 730 and a camera module 720, the circuit board and the camera module 720 are both arranged in the front-end shell 730, the light shielding portion 100 is fitted with the camera module 720, and a positioning structure 723 is provided between the light shielding portion 100 and the camera module 720, and the light shielding portion 100 and the camera module 720 are positioned and matched by the positioning structure 723. In this embodiment, a positioning structure 723 is provided between the light shielding portion 100 and the camera module 720, so that in the process of assembling the circuit board and the camera module 720, the positioning structure 723 between the two can be used to ensure the relative position between the two, which can reduce the difficulty of assembling the light shielding portion 100 and the camera module 720.

[0054] Optionally, the positioning structure 723 may be a positioning groove formed by the inward depression of the side surface of the camera module 720, or the positioning structure 723 may be a protruding structure formed on the side surface of the camera module 720, the protruding structure surrounds the positioning groove, or the positioning structure 723 may be a positioning mark provided on the side surface of the camera module 720, such as a positioning line. It should be noted that, in the case where the positioning structure 723 is not provided between the circuit board and the camera module 720, the relative position between the circuit board and the camera module 720 may be ensured by using a fixture positioning method.

[0055] In an optional embodiment, the circuit board is formed by continuously bending the substrate, and the circuit board also includes a connecting portion 300 and a second mounting portion 400, the second mounting portion 400 is located near the first mounting portion 200 and is separated from the first mounting portion 200, the first mounting portion 200 and the second mounting portion 400 are connected through the connecting portion 300, and the second mounting portion 400 is provided with a second electrical contact for welding with the camera module 720 of the endoscope, the first electrical contact and the second electrical contact are located on the same board surface of the substrate, and the second mounting portion 400 includes a first section 4 10. The second section 420 and the third section 430, the third section 430 is arranged at a distance from the first section 410, the second section 420 is located between the first section 410 and the third section 430, the second section 420 is bent relative to the third section 430 and the first section 410 respectively, the second electrical contact is arranged on the third section 430, the connecting portion 300 is connected to the first section 410 and is bent relative to the first section 410, and the front end component also includes a pad 740, and the pad 740 is located in a second space formed by the first section 410, the second section 420 and the third section 430.

[0056] The front-end assembly of this embodiment includes a padding block 740, which can be used as a reference to bend the first section 410, the second section 420 and the third section 430, so that the distance between the first section 410 and the third section 430 can be a preset distance, so that the camera module 720 is in a preset position when installed to the third section 430, so as to improve the installation accuracy of the camera module 720; in addition, by setting the padding block 740 between the first section 410 and the third section 430, sharp creases can be avoided on the circuit board. Of course, the padding block 740 may not be set between the first section 410 and the third section 430, and this application does not limit this. Furthermore, the second section 420 is an arc section that bulges away from the second space, so that the internal stress of the circuit board can be reduced.

[0057] In an alternative embodiment, see Fig.11 The outer wall of the front end shell 730 is provided with an avoidance opening 731, which penetrates the front end shell 730, and a part of the camera module 720 is arranged in the avoidance opening 731. In this way, the front end shell 730 itself can be used to accommodate a part of the camera module 720, thereby increasing the layout space inside the front end shell 730.

[0058] See also Fig.10 The embodiment of the present application also discloses an endoscope, including an insertion portion 800 and a front end assembly described in any of the above embodiments, so that the endoscope has the beneficial effects of the above front end assembly, which will not be repeated here. The endoscope referred to in the embodiment of the present application can be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiment of the present application does not specifically limit the type of endoscope.

[0059] In an optional embodiment, please continue to refer to Fig.10 The circuit board is formed by continuously bending the substrate, and the circuit board also includes a connecting portion 300 and an extending portion 500. The connecting portion 300 is bent relative to the first mounting portion 200, and the extending portion 500 is connected to the connecting portion 300 and is inserted into the inserting portion 800. The width direction of the extending portion 500 is parallel to the bending direction of the inserting portion 800 ( Fig.10 It should be noted that the connecting portion 300 and the extending portion 500 may be indirectly connected via the second mounting portion 400, in which case the extending portion 500 is bent relative to the second mounting portion 400 in a direction away from the connecting portion 300; or the connecting portion 300 and the extending portion 500 may be directly connected, which is not limited in the present application.

[0060] Since the extension part 500 is inserted into the insertion part 800, the extension part 500 will be bent when the insertion part 800 is bent. The extension part 500 has more material in its width direction, so it is not easy to bend the extension part 500 when it is bent along the width direction of the extension part 500, and the extension part 500 has less material in its thickness direction, so it is easy to bend the extension part 500 when it is bent along the thickness direction of the extension part 500. The width direction of the extension part 500 of this embodiment is perpendicular to the plane where the bending direction of the insertion part 800 is located. In this way, when the insertion part 800 is bent, the insertion part 800 will bend the extension part 500 along the thickness direction of the extension part 500, so that the extension part 500 is easy to bend, which can reduce the pulling force applied by the traction rope to the insertion part 800. Of course, the width direction of the extension part 500 can also be inclined relative to the plane where the bending direction of the insertion part 800 is located, and this application is not limited to this.

[0061] Of course, the circuit board may not include the extension portion 500, in which case the connecting portion 300 may be connected to the circuit in the operating handle via a cable; further, the circuit board may not include the connecting portion 300, in which case the first mounting portion 200 may be connected to the circuit in the operating handle via a cable.

[0062] The above embodiments of the present application focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here. The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present application, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present application and the claims, all of which are within the protection of the present application.

Claims

1. A circuit board, applied to the front end assembly of an endoscope, characterized in that: The circuit board comprises a light shielding portion (100) and a first mounting portion (200), the light shielding portion (100) and the first mounting portion (200) being bent relative to each other; a first electrical contact for welding to a light source (710) of an endoscope is provided on the first mounting portion (200); a first mounting position and a second mounting position are respectively formed on two opposite sides of the light shielding portion (100); the light shielding portion (100) and the first mounting portion (200) cooperate to form the first mounting position, the first mounting position is used to accommodate at least a portion of a light emitting portion of the light source (710), and the second mounting position is used to accommodate a portion of a camera module (720); The bending point between the light shielding portion (100) and the first mounting portion (200) is a first bending point (610); the light shielding portion (100) has a positioning portion (110) protruding from the first mounting portion (200) along a first direction; a gap (101) is provided between a proximal edge of the positioning portion (110) and the first bending point (610); and in a direction extending from a distal edge to a proximal edge of the positioning portion (110), the proximal edge of the positioning portion (110) protrudes beyond the first bending point (610); The first direction is perpendicular to the arrangement direction between the first mounting position and the second mounting position, and the first direction is perpendicular to the thickness direction of the first mounting portion (200).

2. The circuit board according to claim 1, characterized in that: In a first direction, at least one end of the light shielding portion (100) along the first direction extends beyond the first mounting portion (200).

3. The circuit board according to claim 1, characterized in that: The circuit board further comprises a connecting portion (300), the connecting portion (300) being bent relative to the first mounting portion (200), the first mounting portion (200) and the connecting portion (300) cooperating to form a first space, the first mounting position and the first space being distributed at intervals along the thickness direction of the first mounting portion (200), the bending point between the shading portion (100) and the first mounting portion (200) being a first bending point (610), the bending point between the connecting portion (300) and the first mounting portion (200) being a second bending point (620), the second bending point (620) and the first bending point (610) being respectively located on two adjacent sides of the first mounting portion (200); and / or, The circuit board is formed by continuously bending a substrate, and the circuit board also includes a connecting portion (300) and a second mounting portion (400), wherein the second mounting portion (400) is located proximal to the first mounting portion (200) and is separated from the first mounting portion (200), the first mounting portion (200) and the second mounting portion (400) are connected via the connecting portion (300), and the second mounting portion (400) is provided with a second electrical contact for welding to a camera module (720) of an endoscope, and the first electrical contact and the second electrical contact are located on the same board surface of the substrate.

4. A front end assembly of an endoscope, characterized in that: It comprises a light source (710) and a circuit board according to any one of claims 1 to 3, wherein the light source (710) is carried on the first mounting portion (200).

5. The front end assembly according to claim 4, characterized in that: The distal edge of the light shielding portion (100) extends beyond the light emitting portion in a direction extending from the proximal end to the distal end of the light shielding portion (100).

6. The front end assembly according to claim 5, characterized in that The front-end component further comprises a front-end shell (730) and a camera module (720), wherein the circuit board and the camera module (720) are both arranged in the front-end shell (730), and the camera module (720) comprises a lens assembly (721) and a front-end cap (722), wherein at least a portion of the front-end cap (722) is arranged on the far side of the lens assembly (721), and the far-end edge of the shading portion (100) is flush with or exceeds the far-end surface of the lens assembly (721) in a direction extending from the proximal end to the far end of the shading portion (100).

7. The front end assembly according to claim 5 or 6, characterized in that: The front-end component further comprises a front-end shell (730) and a camera module (720); the circuit board and the camera module (720) are both arranged in the front-end shell (730); the light shielding portion (100) is fitted with the camera module (720); a positioning structure (723) is provided between the light shielding portion (100) and the camera module (720); the light shielding portion (100) and the camera module (720) are positioned and matched with each other via the positioning structure (723).

8. An endoscope, characterized in that: It comprises an insert portion (800) and a front end assembly as claimed in any one of claims 4 to 7.

9. The endoscope according to claim 8, characterized in that The circuit board is formed by continuously bending a substrate, and further comprises a connecting portion (300) and an extending portion (500), wherein the connecting portion (300) is bent relative to the first mounting portion (200), and the extending portion (500) is connected to the connecting portion (300) and is inserted into the inserting portion (800), and the width direction of the extending portion (500) is perpendicular to the plane where the bending direction of the inserting portion (800) is located.

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