Capsule core and capsule endoscope

Abstract

The application relates to a capsule core and a capsule endoscope, wherein the capsule core comprises: a PCB board group, a plurality of PCB boards being connected through a flexible circuit board and being arranged at intervals, a plurality of connecting structures, the connecting structures being used for connecting adjacent PCB boards, a plurality of functional units, the functional units being fixed on the PCB boards or the connecting structures, and at least part of the functional units being in communication connection with the PCB boards. The capsule core of the application is connected through the connecting structures to connect adjacent PCB boards, the functional units are fixed on the PCB boards or the connecting structures, the capsule core forms an integral whole, and the capsule core is convenient to fix with a shell.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an integrated capsule core and a capsule endoscope having the capsule core. Background Technology

[0002] Currently, capsule endoscopy is effective in the diagnosis of digestive tract diseases due to its advantages such as convenient examination, non-invasiveness and painlessness, and no impact on the patient's normal life.

[0003] Capsule endoscopes typically include a shell and a capsule core housed within the shell. The capsule core is the core structure of the capsule endoscope and includes, but is not limited to, functional components such as an imaging unit and a signal transmission unit. In existing capsule endoscopes, the internal components are dispersed and fixed within the inner shell structure, resulting in relatively unstable core structure fixation and inconvenient tooling. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated capsule core and a capsule endoscope having the capsule core.

[0005] To achieve one of the above-mentioned objectives, the present invention adopts the following solution:

[0006] A capsule core includes: a PCB board assembly, comprising a plurality of PCB boards connected and spaced apart by flexible circuit boards, a plurality of connecting structures connecting adjacent PCB boards; and a plurality of functional units, wherein the functional units are fixed to the PCB boards or the connecting structures, and at least some of the functional units are communicatively connected to the PCB boards.

[0007] To achieve one of the above-mentioned objectives, this application also adopts the following approach:

[0008] A capsule endoscope, comprising a shell and any one of the capsule cores described above.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: the capsule core of this application is connected to an adjacent PCB board through a connecting structure, and the functional unit is fixed on the PCB board or the connecting structure, so that the capsule core forms a whole and is convenient to be fixed with the shell. Attached Figure Description

[0010] Figure 1 This is an exploded view of a capsule endoscope in a preferred embodiment of the present invention;

[0011] Figure 2 yes Figure 1 The illustrated embodiment shows a structural diagram of the capsule core concealing the camera unit.

[0012] Figure 3 yes Figure 1The illustrated embodiment shows a schematic diagram of the first PCB board, the second PCB board, and the first connector fixed together.

[0013] Figure 4 yes Figure 3 Exploded view;

[0014] Figure 5 yes Figure 1 The illustrated embodiment is a schematic diagram of the battery cell before it is assembled with the adjacent third and fourth PCB boards.

[0015] Figure 6 This is an exploded view of a capsule endoscope according to another embodiment of the present invention;

[0016] Figure 7 yes Figure 6 The illustrated embodiment is a schematic diagram of the overall structure of the capsule core;

[0017] Figure 8 yes Figure 6 The illustrated embodiment shows a schematic diagram of the antenna structure.

[0018] Figure 9 yes Figure 6 The illustrated embodiment shows a schematic diagram of the structure of the second PCB board, the electromagnetic unit, and the third PCB board.

[0019] Figure 10 yes Figure 9 The exploded diagram. Detailed Implementation

[0020] The present application will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present application, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of this application.

[0021] In the various figures of this application, for ease of illustration, certain dimensions of structures or parts may be exaggerated relative to other structures or parts; therefore, they are only used to illustrate the basic structure of the subject matter of this application.

[0022] In this invention, for ease of description, the inside of the capsule endoscope housing is referred to as the inner side, and the outside of the housing is referred to as the outer side.

[0023] like Figures 1 to 10 The image shows a capsule endoscope 100 according to a preferred embodiment of the present invention.

[0024] The capsule endoscope 100 includes a housing 1 and a capsule core 2 built into the housing 1, wherein the capsule core 2 is fixed in the housing 1.

[0025] The outer shell 1 is biocompatible and will not be corroded by digestive fluids. It can use the same material as the outer shell 1 in the existing capsule endoscope 100, or it can be designed separately.

[0026] The outer shell 1 is composed of at least two parts joined together to facilitate fixing the capsule core 2 inside the outer shell 1. For example Figures 1-5 As shown, the outer shell 1 includes a main shell 11 and a transparent end cap 12 disposed at one end of the main shell 11, suitable for a single-lens capsule endoscope 100. The transparent end cap 12 and the main shell 11 are spliced ​​together along the axial direction of the capsule endoscope 100 to form the outer shell 1. The two are connected together by means of threads, adhesive, snap-fit, etc., preferably by adhesive connection for good sealing.

[0027] Or, such as Figures 6-10 As shown, the outer casing 1 includes a main casing 11 that is open at both ends and two transparent end caps 12 respectively disposed at both ends of the main casing 11, suitable for a dual-lens capsule endoscope 100. The connection method between the end caps 12 and the main casing 11 is the same as described above, and will not be repeated here.

[0028] Furthermore, the end cap 12 includes a transparent cover 121 and a first connecting portion 122 protruding from the outer half of the transparent cover 121 toward the main shell 11, wherein the "outer half" refers to the portion extending inward from the outer wall but not reaching the inner wall, and a step is formed between the first connecting portion 122 and the transparent cover.

[0029] The main shell 11 includes a main shell 111 and a second connecting portion 112 protruding from the inner half of the main shell 111 toward the end cap 12, wherein the "inner half" refers to the portion extending outward from the inner wall but not reaching the outer wall, and a step is formed between the second connecting portion 112 and the main shell 111.

[0030] The first connecting portion 122 is sleeved over the second connecting portion 112, thereby connecting the end cap 12 to the main shell 11. The outer shell 1 also includes an adhesive groove located between the first connecting portion 122 and the second connecting portion 112 to accommodate the adhesive used to bond the end cap 12 to the main shell 11, providing good sealing. Those skilled in the art will understand that the adhesive groove is disposed on at least one of the inner wall of the first connecting portion 122 and the outer wall of the second connecting portion 112.

[0031] Additionally, the second connecting portion 112 is shorter than the first connecting portion 122. The transparent cover 121, the first connecting portion 122, and the second connecting portion 112 together form a fixing groove (not shown), which facilitates fixing the capsule core 2. Alternatively, the end of the main shell 11 has an inwardly protruding locking protrusion 113, which facilitates fixing the capsule core 2. After tooling, the capsule core 2 is fixed to the outer shell 1. During the movement of the capsule, the position of the camera unit relative to the transparent cover remains unchanged, improving the image acquisition quality.

[0032] Of course, unlike the above embodiments, the connection of the outer shell 1 can also be designed as follows: the first connecting part protrudes from the inner half of the transparent cover toward the main shell, the second connecting part protrudes from the outer half of the main shell toward the end cap, the first connecting part and the second connecting part are sleeved on each other, and the main shell, the second connecting part and the first connecting part together form the fixing groove.

[0033] In this application, the capsule core 2 has an integral structure, which facilitates overall assembly with the outer shell 1.

[0034] The capsule core 2 includes a PCB board assembly 21, several connecting structures 23 connecting several adjacent PCB boards, and several functional units 22 fixed on the PCB board or the connecting structure 23; it can also be understood that the connecting structure 23 connects the PCB board assembly 21 and the functional units 22 into a whole.

[0035] The PCB board assembly 21 includes several PCB boards connected and spaced apart by flexible circuit boards. The number of PCB boards is determined based on the number and type of the functional units 22. By bending the flexible circuit boards, the several PCB boards are arranged in parallel, and the spaces between adjacent PCB boards can be used to place the functional units 22. In this application, "parallel arrangement" refers to a generally parallel arrangement, not a strictly geometrical parallel arrangement.

[0036] The functional unit 22 is the core component of the capsule core 2, and at least some of the functional elements of the functional unit 22 are communicatively connected to the PCB board. Those skilled in the art will understand that not all functional units 22 need to be connected to the PCB board. That is, only the functional elements of functional units 22 such as the camera unit and antenna unit that need to communicate with the PCB board are communicatively connected to it. Other functional units 22, such as the magnet unit 223, only need to be mechanically fixedly connected to the adjacent PCB board.

[0037] The connection structure 23 connects adjacent PCB boards. Its structure and connection method are not limited, as long as they enable the capsule core 2 to become a single unit. The connection structure 23 includes, but is not limited to, the following methods:

[0038] For example, the connection structure 23 includes a fastener and an adhesive (not shown) connecting the fastener and the PCB board. In one specific embodiment, the connection structure 23 further includes an adhesive groove disposed on the fastener, where the adhesive bonds the fastener and the adjacent PCB board. In embodiments where the fastener and the PCB board are connected by adhesive dispensing, the PCB board and the fastener are aligned and fixed by dispensing adhesive at the adhesive groove, which will not be described further below.

[0039] For example, the connection structure 23 includes a fastener, a hook disposed on one of the fastener and the PCB board, and a slot on the other. The hook and slot cooperate to connect the fastener to the PCB board. Typically, the hook is disposed on the fastener and the slot is disposed on the PCB board, simplifying the PCB board manufacturing process.

[0040] In addition, the connection structure 23 is provided with a lead groove (not shown) for the flexible circuit board to pass through; specifically, the lead groove is provided on the fixing member.

[0041] Furthermore, the capsule core 2 also includes a positioning structure 24. The positioning structure 24 includes a positioning post 241 disposed on one of the adjacent connecting structure 23 and the PCB board, and a positioning groove 242 on the other for receiving the positioning post 241. When the two are fixed together, the positioning post 241 is inserted into the positioning groove 242, so that the connected connecting structure 23 and the PCB board remain coaxial, which facilitates the surrounding arrangement of the antenna unit. Typically, the positioning groove 242 is disposed on the PCB board, and the positioning post 241 is disposed on the connecting structure 23, simplifying the manufacturing process of the PCB board.

[0042] In one specific embodiment, the positioning post 241 is a semi-cylinder and the positioning groove 242 is a semi-circular groove; of course, its structure is not limited to this.

[0043] The capsule core 2 of this application will be described in detail below with specific embodiments.

[0044] In the first embodiment, the PCB board assembly 21 includes a first PCB board 211 and a second PCB board 212 arranged sequentially along the axial direction of the capsule core 2 and connected by a flexible circuit board. The first PCB board 211 has a cutout portion 2111.

[0045] The functional unit 22 includes a first lighting unit 221 fixed to the side of the first PCB board 211 facing away from the second PCB board 212, and a first camera unit 222 fixed to the side of the second PCB board 212 facing the first PCB board 211. At least part of the first camera unit 222 is located inside the cutout portion 2111.

[0046] Specifically, the first lighting unit 221 is fixed on the first PCB board 211, and the first PCB board provides power to the first lighting unit 221 and controls it to turn on or off.

[0047] The first camera unit 222 includes a first camera mounting base 2221 fixed to the side of the second PCB board 212 facing the first PCB board 211, and a first camera 2222 fixed to the side of the first camera mounting base 2221 away from the second PCB board 212. The first camera is communicatively connected to the second PCB board 212, and the second PCB board 212 is used to acquire and process images.

[0048] The illumination range of the first illumination unit 221 partially or completely overlaps with the shooting range of the first camera unit 222. The first illumination unit 221 provides light to the digestive tract through the end cap 12, so that the first camera 2222 can take pictures through the end cap 12.

[0049] The connection structure 23 includes a first connection structure 231 connecting the first PCB board 211 and the second PCB board 212. The first connection structure 231 also has a cutout portion 2315, and the first camera unit 222 is located within the cutout portion 2315. Specifically, the first camera 2222 is located within the cutout portion 2315 so that it can take pictures through the cutout portion 2315.

[0050] The first connection structure 231 includes a retaining frame 2311 with a through slot, a first hook 2312 disposed on the retaining frame 2311 facing the first PCB board 211, and a first slot 2313 disposed on the first PCB board 211. The first PCB board 221 is fixed to the first connection structure 231 by the cooperation of the first hook 2312 and the first slot 2313.

[0051] The first connection structure 231 further includes a first adhesive groove 2314 disposed on the side of the retaining frame 2311 facing the second PCB board 212, and a first adhesive (not shown) connecting the first connection structure 231 and the second PCB board 212 at the first adhesive groove 2314, thereby achieving the connection between the two through adhesive dispensing.

[0052] Meanwhile, one of the second PCB board 212 and the first connecting structure 231 has a positioning post 241 and the other has a positioning groove 242. When the two are fixed together, the positioning post 241 is inserted into the positioning groove 242, so that the two remain coaxial.

[0053] Furthermore, the PCB assembly also includes a third PCB 213 connected to the side of the second PCB 212 away from the first PCB 211 via a flexible circuit board.

[0054] The connection structure 23 further includes a second connection structure 232 connecting the second PCB board 212 and the third PCB board 213. The second connection structure 232 includes a second fixing member 2321 with a receiving cavity, a second adhesive groove 2322 disposed on the second fixing member 2321 facing the second PCB board 212, a second adhesive connecting the second fixing member 2321 and the second PCB board 212 at the second adhesive groove 2322, a third adhesive groove 2323 disposed on the second fixing member 2321 facing the third PCB board 213, and a third adhesive connecting the second fixing member 2321 and the third PCB board 213 at the third adhesive groove 2323.

[0055] Simultaneously, one of the second PCB board 212 and the second connecting structure 232 has a positioning post 241 and the other has a positioning groove 242. When the two are fixed together, the positioning post 241 is inserted into the positioning groove 242, so that the two remain coaxial. Similarly, one of the third PCB board 213 and the second connecting structure 232 has a positioning post 241 and the other has a positioning groove 242. When the two are fixed together, the positioning post 241 is inserted into the positioning groove 242, so that the two remain coaxial.

[0056] Based on the above-described capsule core structure with three PCB boards, the functional unit 22 further includes a magnet unit and / or a battery unit disposed within the receiving cavity; further, the functional unit 22 also includes an antenna unit soldered to the third PCB board 213 on the side opposite to the second PCB board 212; or, the functional unit 22 further includes an antenna unit soldered to the second PCB board 212 and / or the third PCB board 213, the antenna unit being disposed around at least a portion of the structure of the capsule core.

[0057] The magnet unit is used to cooperate with an external processing terminal, which can apply an external magnetic field to the capsule endoscope, thereby controlling the active movement of the capsule endoscope 100 within the patient's digestive tract via the magnet unit. The battery unit is used to power other functional units.

[0058] Alternatively, based on the above-described capsule core structure with three PCB boards, the PCB board assembly further includes a fourth PCB board 214 connected to the side of the third PCB board 213 opposite to the second PCB board 212 via a flexible circuit board.

[0059] The connection structure 23 further includes a third connection structure 233 connecting the third PCB board 213 and the fourth PCB board 214. The third connection structure 233 includes a third fastener 2331 connected to the third PCB board 213, a fourth adhesive groove disposed on the side of the third fastener 2331 facing the third PCB board 213, a fourth adhesive connecting the third fastener 2331 and the third PCB board 213 at the fourth adhesive groove, a fourth fastener 2332 connected to the fourth PCB board 214, a fifth adhesive groove disposed on the side of the fourth fastener 2332 facing the fourth PCB board 214, and a fifth adhesive connecting the fourth fastener and the fourth PCB board 214 at the fifth adhesive groove.

[0060] Simultaneously, one of the third PCB board 213 and the third fixing member 2331 has a positioning post 241 and the other has a positioning groove 242. When the two are fixed together, the positioning post 241 is inserted into the positioning groove 242, so that the two remain coaxial. Similarly, one of the fourth PCB board 214 and the fourth fixing member 2332 has a positioning post 241 and the other has a positioning groove 242. When the two are fixed together, the positioning post 241 is inserted into the positioning groove 242, so that the two remain coaxial.

[0061] The functional unit 22 also includes a magnet unit disposed in the receiving cavity. The second connecting structure 232 also has the function of fixing the magnet unit. Therefore, those skilled in the art will also refer to the second connecting structure 232 as a magnet fixing component.

[0062] The functional unit 22 further includes a battery unit 224 fixed between the third fixing member 2331 and the fourth fixing member 2332. The battery unit 224 includes a battery pack 2241 and solder feet 2242 soldered to the third PCB board 213. The third connecting structure 233 also serves to fix the battery unit 224, therefore, those skilled in the art may refer to the third connecting structure 233 as a battery fixing member. The battery unit 224 is soldered to the third PCB board 213 and the fourth PCB board 214 to achieve electrical connection, and the PCB board soldered to the battery unit 224 is also referred to as a power supply board.

[0063] The functional unit 22 further includes an antenna unit 225 soldered to the side of the fourth PCB board 214 opposite to the third PCB board 213. Alternatively, the functional unit 22 further includes an antenna unit 225 soldered to the second PCB board 212 and / or the fourth PCB board 214. The antenna unit 225 includes a solder joint 2251 soldered to the second PCB board 212 and / or the fourth PCB board 214, and an antenna 2252 connected to the solder joint 2251. The antenna 2252 is arranged around at least a portion of the structure of the capsule core 2, making the entire capsule core 2 structure compact.

[0064] In all the above embodiments, the capsule core 2 is typically assembled inside a housing 1 with a transparent end cap 12 at one end, and the first camera unit 222 and the first lighting unit 221 are located at the end cap 12.

[0065] In addition, the first connecting structure 231 also has an outwardly protruding protrusion 2316 for inserting into the fixing groove of the outer shell 1 to fix the capsule core 2 to the outer shell 1 as a whole.

[0066] In the second embodiment, the capsule core 2 has a dual camera unit.

[0067] In one specific embodiment, please refer to Figures 6-10 As shown, in an embodiment where a fourth PCB board 214 is provided and the antenna unit 225 is soldered to the second PCB board 212 and / or the fifth PCB board 215, and the antenna unit 215 is arranged around at least a portion of the structure of the capsule core 2, the PCB board assembly further includes an annular fifth PCB board 215 connected to the side of the fourth PCB board 214 away from the third PCB board 213 via a flexible circuit board, the fifth PCB board 215 having a second cutout portion.

[0068] The functional unit 22 includes a second lighting unit 226 fixed to the side of the fifth PCB board 215 away from the fourth PCB board 214, and a second camera unit 227 fixed to the side of the fourth PCB board 214 facing the fifth PCB board 215, with at least a portion of the second camera unit 227 located within the second cutout portion.

[0069] The connection structure 23 further includes a fourth connection structure 234 connecting the fourth PCB board 214 and the fifth PCB board 215. The fourth connection structure 234 includes a retaining frame with a through groove, a second hook disposed on the retaining frame facing the fifth PCB board 215, a second slot disposed on the fifth PCB board 215, a sixth adhesive groove disposed on the retaining frame 2311 facing the fourth PCB board 214, and a sixth adhesive connecting the fourth connection structure 234 and the fourth PCB board 214 at the sixth adhesive groove.

[0070] Specifically, the fourth connection structure 234 is the same as and symmetrically arranged as the first connection structure 231, the second lighting unit 226 is the same as and symmetrically arranged as the first lighting unit 221, and the second camera unit 227 is the same as and symmetrically arranged as the first camera unit 222.

[0071] Alternatively, in another embodiment (not shown), based on the embodiment in which the PCB board assembly includes only a first PCB board, a second PCB board, and a third PCB board, and the antenna unit is soldered to the second PCB board or the third PCB board, and the antenna unit is arranged around at least a portion of the structure of the capsule core, the PCB board assembly further includes an annular sixth PCB board connected to the side of the third PCB board away from the second PCB board by a flexible circuit board, the sixth PCB board having a third cutout portion.

[0072] The functional unit includes a second lighting unit fixed to the side of the sixth PCB board away from the third PCB board, and a second camera unit fixed to the side of the third PCB board facing the sixth PCB board, with at least a portion of the second camera unit located within the third cutout portion.

[0073] The connection structure further includes a fifth connection structure connecting the third PCB board and the sixth PCB board. The fifth connection structure includes a retaining frame with a through groove, a third hook disposed on the retaining frame facing the sixth PCB board, a third slot disposed on the sixth PCB board, a seventh adhesive groove disposed on the retaining frame facing the third PCB board, and a seventh adhesive connecting the fifth connection structure and the third PCB board at the seventh adhesive groove.

[0074] Specifically, the fifth connection structure is the same as and symmetrically arranged as the first connection structure, the second lighting unit is the same as and symmetrically arranged as the first lighting unit, and the second camera unit is the same as and symmetrically arranged as the first camera unit.

[0075] In the second type of embodiment, the capsule core 2 is typically assembled inside the outer shell 1, which has transparent end caps 12 at both ends. The first camera unit 222 and the first lighting unit 221 are located at one of the end caps 12, and the second camera unit 227 and the second lighting unit 226 are located at the other end cap 12.

[0076] In addition, the capsule core 2 and the outer shell 1 in this type of embodiment can be fixed in the following ways, but not limited to: the first connecting structure 231 does not have a protrusion 2316, and one end of the main shell 11 is provided with an inwardly protruding locking protrusion 113. The capsule core 2, which is assembled into one piece by the connecting structure 23, is inserted from the top of the main shell 11, and the locking protrusion 113 abuts against part of the structure of the capsule core 2. Then, glue is applied to the other end of the main shell 11 at the corresponding position on the capsule core 2 for fixation. Specifically, the locking protrusion abuts against the first connecting structure 231, and the fourth connecting structure 234 is fixed to the other end of the main shell 11 by glue application.

[0077] In summary, the capsule core 2 of this application is connected to an adjacent PCB board through the connecting structure 23, and the functional element 22 is fixed on the PCB board or the connecting structure 23, so that the capsule core 2 forms a whole and is convenient to be fixed with the outer shell 1.

[0078] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0079] The detailed descriptions listed above are merely specific descriptions of feasible implementations of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent implementations or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A capsule core, characterized in that, include: A PCB board assembly includes a plurality of PCB boards connected and spaced apart by a flexible circuit board. The PCB board assembly includes a first PCB board and a second PCB board arranged sequentially along the axial direction of the capsule core and connected by a flexible circuit board. The PCB board assembly also includes a third PCB board connected to the side of the second PCB board away from the first PCB board by a flexible circuit board. A plurality of connection structures are provided to connect adjacent PCB boards. The connection structure includes a first connection structure connecting the first PCB board and the second PCB board, and a second connection structure connecting the second PCB board and the third PCB board. The second connection structure includes a second fixing member having a receiving cavity. Several functional units are fixed to the PCB board or the connection structure, and at least some of the functional units are communicatively connected to the PCB board. The functional unit includes a magnet unit and / or a battery unit disposed within the receiving cavity; The second connection structure includes a second adhesive groove disposed on the second fixing member facing the second PCB board, a second adhesive connecting the second fixing member and the second PCB board at the second adhesive groove, a third adhesive groove disposed on the second fixing member facing the third PCB board, and a third adhesive connecting the second fixing member and the third PCB board at the third adhesive groove; The second PCB board and the second connecting structure each have a positioning post and a positioning groove, respectively. When the two are fixed together, the positioning post is inserted into the positioning groove. The third PCB board and the second connecting structure each have a positioning post and a positioning groove, respectively. When the two are fixed together, the positioning post is inserted into the positioning groove.

2. The capsule core according to claim 1, characterized in that, The first connection structure includes a fastener and an adhesive connecting the fastener and the adjacent PCB board, wherein the adjacent PCB board includes a first PCB board and a second PCB board.

3. The capsule core according to claim 2, characterized in that, The first connection structure further includes an adhesive groove disposed on the fixing member, wherein the adhesive is used to bond the fixing member and the adjacent PCB board at the adhesive groove.

4. The capsule core according to claim 1, characterized in that, The first connection structure includes a fastener, one of which has a hook and the other has a slot. The hook and the slot cooperate to connect the fastener to the first PCB board.

5. The capsule core according to claim 1, characterized in that, The first connection structure and the second connection structure are provided with lead grooves for flexible circuit boards to pass through.

6. The capsule core according to any one of claims 1 to 5, characterized in that, The first PCB board has a cutout section; The functional unit includes a first lighting unit fixed to the side of the first PCB board away from the second PCB board, and a first camera unit fixed to the side of the second PCB board facing the first PCB board, with at least a portion of the first camera unit located within the cutout portion; The first connecting structure includes a retaining frame with a through groove, a first hook disposed on the retaining frame facing the first PCB board, a first slot disposed on the first PCB board, a first adhesive groove disposed on the retaining frame facing the second PCB board, and a first adhesive connecting the first connecting structure and the second PCB board at the first adhesive groove.

7. The capsule core according to claim 6, characterized in that, The battery unit is used to power other functional units, and several PCB boards are arranged in parallel.

8. The capsule core according to claim 7, characterized in that, The functional unit also includes an antenna unit soldered to the side of the third PCB board away from the second PCB board; Alternatively, the functional unit may further include an antenna unit soldered to the second PCB board and / or the third PCB board, the antenna unit being arranged around at least a portion of the structure of the capsule core.

9. The capsule core according to claim 7, characterized in that, The PCB assembly further includes an annular sixth PCB connected to the side of the third PCB away from the second PCB via a flexible circuit board, the sixth PCB having a third cutout portion; The connection structure further includes a fifth connection structure connecting the third PCB board and the sixth PCB board. The fifth connection structure includes a retaining frame with a through groove, a third hook disposed on the retaining frame facing the sixth PCB board, a third slot disposed on the sixth PCB board, a seventh adhesive groove disposed on the retaining frame facing the third PCB board, and a seventh adhesive connecting the fifth connection structure and the third PCB board at the seventh adhesive groove. The functional unit further includes an antenna unit soldered to the second PCB board and / or the third PCB board, the antenna unit being arranged around at least a portion of the structure of the capsule core; The functional unit includes a third lighting unit fixed to the side of the sixth PCB board away from the third PCB board, and a third camera unit fixed to the side of the third PCB board facing the sixth PCB board, with at least a portion of the third camera unit located within the third cutout portion.

10. A capsule endoscope, comprising a shell and a capsule core, characterized in that, The capsule core is the capsule core according to any one of claims 1 to 9.

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