Capsule endoscope

Abstract

The present invention provides a capsule endoscope, comprising a capsule shell and at least two sets of image acquisition mechanisms, wherein two circuit boards of the two sets of image acquisition mechanisms are arranged opposite to each other in the axial direction of the capsule shell, and a first space is formed therebetween; the image acquisition devices of the two sets of image acquisition mechanisms are arranged staggered in the radial direction of the capsule shell, and the lenses of the image acquisition devices are arranged back to back. Since the projections of at least the parts of the power supply components and / or image acquisition devices of one set of image acquisition mechanisms and the power supply components and / or image acquisition devices of another set of image acquisition mechanisms located in the first space on the cross section where the axis of the capsule shell is located have overlapping parts along the radial direction of the capsule shell, in the axial direction of the capsule shell, the length L of the capsule shell is made smaller than the length L' of the existing capsule shell, the capsule endoscope has a small size while increasing the shooting angle range, and the accommodation area required to empty the intestine is small, thereby improving the accuracy of the endoscope in detecting the intestine.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a capsule endoscope. Background Art

[0002] The capsule endoscope in the prior art mainly includes a capsule shell, a battery arranged in the capsule shell, a circuit board of a main control module, a camera, and multiple lighting lamps. Among them, the battery is electrically connected to the circuit board to power the circuit board, the camera is fixed on the circuit board, and the camera and the battery are distributed on both sides of the circuit board. Multiple lighting devices are fixed on the circuit board and distributed around the periphery of the camera lens. When a capsule endoscope with this structure collects images of the human intestine, the lens of a camera can only capture images of a local angle range in the intestine, resulting in a limited shooting area, and the collected images cannot give a more comprehensive reflection of the situation in the intestine.

[0003] In order to increase the shooting area of ​​the endoscope in the human intestine, the existing capsule endoscope is provided with two sets of shooting mechanisms in the capsule shell, each set of shooting mechanisms includes the above-mentioned battery, circuit board, camera and multiple lighting lamps, and the two sets of shooting mechanisms are arranged back to back, that is, along the axial direction of the capsule shell, the battery, circuit board and camera of one set of shooting mechanisms are arranged from the inside to the outside, and the battery, circuit board and camera of the other set of shooting mechanisms are arranged from the inside to the outside, and the batteries of the two sets of shooting mechanisms are back to back and close to each other, so that the lenses of the two cameras respectively shoot two areas in the intestine to increase the shooting area. However, in the setting of the two sets of shooting mechanisms, if the length of each set of image acquisition mechanism itself is L0, the distance between each lens and the axial end of the capsule shell adjacent to it is L1, and the thickness of the capsule shell is L2, the length of the existing capsule shell L'=2L0+2L1+2L2; it causes the capsule shell to have a large length direction dimension, and before the capsule endoscope enters the human intestine, the patient needs to empty the stool in the human intestine first to provide the capsule endoscope with a receiving area in the intestine.

[0004] That is, the longer the capsule shell is, the longer the accommodation area that needs to be emptied in advance in the human intestine is. If the accommodation area that needs to be emptied in advance in the human intestine is not enough to place the capsule endoscope, part of the endoscope will be surrounded by the stool in the intestine, which will affect the accuracy of the image captured by the endoscope lens. Therefore, the existing capsule endoscope has a large axial length of the capsule shell while increasing the shooting angle range, resulting in a decrease in the accuracy of the image captured by the endoscope, and a large error in the endoscope's detection of the intestine, which affects the doctor's final diagnosis result. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is that the existing capsule endoscope has a large axial length of the capsule shell while increasing the shooting angle range, resulting in reduced accuracy of the image taken by the endoscope and large errors in the endoscope's detection of the intestine.

[0006] To this end, the present invention provides a capsule endoscope, comprising

[0007] A capsule housing having a mounting cavity;

[0008] At least two sets of image acquisition mechanisms are arranged in the installation cavity; any set of the image acquisition mechanisms includes a circuit board, a power supply component and an image acquisition device electrically connected and installed on the circuit board; the circuit boards of the two sets of image acquisition mechanisms are arranged opposite to each other in the axial direction of the capsule shell, and a first space is formed between the two sets of image acquisition devices; the image acquisition devices of the two sets of image acquisition devices extend in the axial direction of the capsule shell and are arranged staggered in the radial direction, and the lenses of the image acquisition devices are arranged back to back and face the two ends of the axial direction of the capsule shell respectively; the power supply components in the two sets of image acquisition mechanisms are distributed in the first space;

[0009] The projections of one set of power supply components and / or image collectors of the image acquisition mechanism and another set of power supply components and / or image collectors of the image acquisition mechanism, at least the portion located in the first space, on the cross section where the axis of the capsule shell is located, have overlapping portions along the radial direction of the capsule shell.

[0010] Optionally, in the capsule endoscope, any of the image collectors comprises a body and a lens fixed on a first end of the body; the image collectors are fixed on the respective corresponding circuit boards through the second end of the body thereon, and the body extends into the first space;

[0011] The projections of the parts of the bodies of the image collectors in the two sets of image collector mechanisms located in the first space on the cross section have overlapping parts along the radial direction.

[0012] Optionally, in the capsule endoscope, the two sets of image acquisition mechanisms are respectively a first image acquisition mechanism and a second image acquisition mechanism, and the first image acquisition mechanism includes a first circuit board, a first power supply component and a first image collector, and the second image acquisition mechanism includes a second circuit board, a second power supply component and a second image collector;

[0013] The first end of the first body of the first image collector extends toward the second circuit board and passes through the second circuit board and then extends outward;

[0014] The first end of the second body of the second image collector extends toward the first circuit board and passes through the first circuit board and then extends outward;

[0015] The first lens of the first image collector and the second lens of the second image collector are respectively located on the outside of the second circuit board and the first circuit board.

[0016] Optionally, in the capsule endoscope, the first power supply component and the second power supply component are arranged side by side and abut each other, and any of the power supply components is provided with a mounting hole or a clearance hole for the first body and the second body to pass through respectively.

[0017] Optionally, in the above-mentioned capsule endoscope, at least one of the first power supply component and the second power supply component is ring-shaped, and an inner hole of the ring serves as a mounting hole or a clearance hole of the power supply component.

[0018] Optionally, in the above-mentioned capsule endoscope, the first power supply component and the second power supply component extend in the axial direction of the capsule shell and are staggered in the radial direction, and their projections on the cross section have overlapping parts along the radial direction.

[0019] Optionally, in the above-mentioned capsule endoscope, an outer peripheral wall surface of any one of the circuit boards abuts against an inner peripheral wall of the capsule shell.

[0020] Optionally, in the above-mentioned capsule endoscope, any set of the image acquisition mechanism also includes at least two lighting components; the first lighting component of the first image acquisition mechanism is installed on the second circuit board and surrounds the periphery of the first lens; the second lighting component of the second image acquisition mechanism is installed on the first circuit board and surrounds the periphery of the second lens.

[0021] Optionally, in the capsule endoscope, the first image collector and the second image collector are centrally symmetrically arranged on both sides of the axis of the capsule shell, and the side wall where the first image collector and the second image collector contact each other falls on the axis of the capsule shell, and the first image collector and the second image collector satisfy the following relationship:

[0022] Wherein α is the field of view of the lens of the image collector, and α>180 degrees; m1 is the axial length of the image collector in the capsule shell; h is the radial width of the image collector in the capsule shell, and r is the maximum radius of the capsule shell; L3 is the length of the overlapping part of the projections of the two image collectors on the cross section along the radial direction.

[0023] Optionally, in the capsule endoscope, the capsule shell is in the shape of a rugby ball; and / or

[0024] The two sets of image collectors of the image collection mechanism are centrally symmetrically distributed in the installation cavity of the capsule shell.

[0025] The technical solution of the present invention has the following advantages:

[0026] 1. The capsule endoscope provided by the present invention comprises a capsule shell and at least two sets of image acquisition mechanisms, the capsule shell has an installation cavity; any set of image acquisition mechanisms comprises a circuit board, a power supply component and an image acquisition device electrically connected and installed on the circuit board; the two circuit boards of the two sets of image acquisition mechanisms are arranged relative to each other in the axial direction of the capsule shell, and a first space is formed therebetween; the image acquisition devices of the two sets of image acquisition mechanisms are staggered in the radial direction of the capsule shell, and the lenses of the image acquisition devices are arranged back to back and face the two ends of the axial direction of the capsule shell respectively; the power supply components in the two sets of image acquisition mechanisms are distributed in the first space.

[0027] Since the projections of the power supply components and / or image collectors of one set of image acquisition mechanisms, at least the portion located in the first space, and the power supply components and / or image collectors of another set of image acquisition mechanisms on the cross section where the axis of the capsule shell is located have an overlapping portion along the radial direction of the capsule shell, and the length of the overlapping portion in the axial direction of the capsule shell is L3, the length L of the capsule shell of the present structure is 2L0-L3+2L1+2L2, so that the length L of the capsule shell is smaller than the length L' of the existing capsule shell, so that the capsule endoscope of the present structure has a small size while increasing the shooting angle range, and before the endoscope enters the intestine, the small accommodating area in the intestine that needs to be emptied is small, and the endoscope is not easily surrounded by stool in the intestine, so that the accuracy of the endoscope's detection of the intestine can be improved, and the probability of a doctor making a misdiagnosis based on the images acquired by the endoscope is reduced.

[0028] 2. In the capsule endoscope provided by the present invention, any image collector comprises a body and a lens fixed on the first end of the body; the image collector is fixed to the corresponding circuit board through the second end of the body thereon, and the body extends into the first space; the projections of the parts of the bodies of the image collectors in the two sets of image acquisition mechanisms located in the first space on the above cross section have overlapping parts in the radial direction.

[0029] In a capsule endoscope of this structure, a first overlapping portion is radially formed by the projection on the cross section of the portion of the image collector bodies in the two sets of image collection mechanisms extending into the first space. If the length of the first overlapping portion is n1, then L3=n1, so as to reduce the length of the capsule shell along its axial direction.

[0030] 3. The capsule endoscope provided by the present invention comprises two sets of image acquisition mechanisms, namely a first image acquisition mechanism and a second image acquisition mechanism. The first end of the first body of the first image acquisition device extends toward the second circuit board and passes through the second circuit board before protruding outward; the first end of the second body of the second image acquisition device extends toward the first circuit board and passes through the first circuit board before protruding outward; the first lens of the first image acquisition device and the second lens of the second image acquisition device are respectively located on the outside of the second circuit board and the first circuit board.

[0031] The length L0 of each existing image acquisition mechanism itself = the length m1 of the image acquisition device + the length m2 of the circuit board + the length m3 of the power supply component. In the capsule endoscope of this structure, not only the projections of the parts of the first body and the second body located in the first space on the above cross section have a first overlapping part n1 in the radial direction; but also the projections of the parts located on the first circuit board and the second circuit board on the above cross section have second overlapping parts in the radial direction respectively. If the length of the second overlapping part in the axial direction of the capsule shell is n2, correspondingly L3 = n1 + n2. At the same time, the first body passes through the second circuit board, and the second body passes through the first circuit board, so the above L3 also includes the lengths of the first circuit board and the second circuit board themselves. ; the axial lengths of the two sets of image acquisition mechanisms are further reduced, and the length of the capsule shell of the present structure is L=2(L0-m2)-L3+2L1+2L2, thereby further shortening the length of the capsule shell, making the size of the capsule endoscope smaller and the structure more compact; the two power supply components are further distributed in the first space, and the power supply components do not need to occupy a separate length in the axial direction of the capsule shell, thereby further shortening the length of each set of image acquisition mechanisms. The length of the capsule shell of the present structure is L=2(L0-m3-m2)-L3+2L1+2L2=2m1-L3+2L1+2L2, thereby further shortening the length of the capsule shell, making the size of the capsule shell smaller and the structure more compact.

[0032] 4. In the capsule endoscope provided by the present invention, the first image collector and the second image collector are centrally symmetrically arranged on both sides of the axis of the capsule shell, and the side wall where the first image collector and the second image collector contact each other falls on the axis of the capsule shell, and the first image collector and the second image collector satisfy the following relationship:

[0033] Wherein α is the field of view of the lens of the image collector, and α>180 degrees; m1 is the axial length of the image collector in the capsule shell; h is the radial width of the image collector in the capsule shell, and r is the maximum radius of the capsule shell; L3 is the length of the overlapping part of the projections of the two image collectors on the cross section along the radial direction.

[0034] For a capsule endoscope with this structure, when the parameters of the two image collectors satisfy the above formula, the lenses of the two image collectors can cooperate to achieve shooting within the full viewing angle range. When the image collector is selected, r, h, m1, and α in the above relationship are all known constants. At this time, L3 is calculated according to the above formula, and the overlapping positions of the two image collectors are specifically set according to this L3, so that the capsule endoscope can achieve shooting within the full viewing angle range while being small in size and more compact in structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 This is a schematic diagram of the three-dimensional structure of the capsule endoscope provided in Example 1 of the present invention;

[0037] Figure 2 for Figure 1 Schematic diagram of the longitudinal section of the capsule endoscope;

[0038] Figure 3 for Figure 1 Schematic diagram of the structure of the capsule endoscope after removing the capsule shell;

[0039] Figure 4 for Figure 1 A three-dimensional schematic diagram of a capsule endoscope after a transverse section;

[0040] Figure 5 for Figure 1 Schematic diagram of the front view direction of the capsule endoscope;

[0041] Figure 6 for Figure 2 Schematic diagram of the capsule endoscope with the lengths of the components marked;

[0042] Figure 7 is a schematic longitudinal cross-sectional view of the capsule endoscope provided in Example 2 of the present invention;

[0043] Figure 8 for Figure 7 Schematic diagram of the structure of the capsule endoscope without the outer shell;

[0044] Description of reference numerals:

[0045] 1-capsule shell; 11-intermediate shell; 12-transparent shell;

[0046] 21-first circuit board; 211-first mounting hole; 212-first clearance hole; 22-first power supply component; 23-first image collector; 231-first body; 232-first lens; 24-first lighting component;

[0047] 31-second circuit board; 311-second mounting hole; 312-second clearance hole; 32-second power supply component; 33-second image collector; 331-second body; 332-second lens; 34-second lighting component;

[0048] 4- Control unit. DETAILED DESCRIPTION

[0049] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0053] Example 1

[0054] This embodiment provides a capsule endoscope, such as Figures 1 to 6 As shown, it includes a capsule shell 1 and two sets of image acquisition mechanisms.

[0055] like Figure 1 and Figure 2 As shown, the capsule shell 1 has a mounting cavity. Optionally, the capsule shell 1 includes an intermediate shell 11 and a transparent shell 12 detachably provided on the openings at both ends of the intermediate shell 11. For example, the transparent shell 12 is sleeved outside the opening of the intermediate shell 11 and is connected by snap-fit, or threaded, or directly sleeved, or other existing detachable connection methods. The transparent shell 12 forms an observation window, which is also convenient for the lens to pass through the transparent shell 12 to collect images inside the intestine; of course, the intermediate shell 11 can also be made of transparent material. Optionally, as Figure 1 As shown, the capsule shell 1 is in the shape of a rugby ball, or other capsule shapes formed by other smooth surfaces.

[0056] like Figure 2 As shown, two sets of image acquisition mechanisms are arranged in the installation cavity; each set of image acquisition mechanisms includes a circuit board, a power supply component electrically connected and mounted on the circuit board, and an image acquisition device. Optionally, the power supply component is a battery, which can be a button battery, or other forms of batteries, or an existing portable power supply device, and the battery supplies power to the circuit board and the lighting b component (mentioned below). Optionally, the image acquisition device is a video camera, or a camera, or an existing device capable of capturing images.

[0057] The two sets of image acquisition mechanisms are respectively a first image acquisition mechanism and a second image acquisition mechanism. Correspondingly, the first image acquisition mechanism includes a first circuit board 21, a first power supply component 22 and a first image collector 23; the second image acquisition mechanism includes a second circuit board 31, a second power supply component 32 and a second image collector 33.

[0058] like Figure 2 and Figure 4 As shown, the first circuit board 21 and the second circuit board 31 are arranged opposite to each other in the axial direction of the capsule shell 1, and a first space is formed therebetween; the first image collector 23 and the second image collector 33 extend in the axial direction of the capsule shell 1 and are staggered in the radial direction.

[0059] like Figure 3 As shown, each image collector includes a body and a lens fixed on the first end of the body, and the image collector is fixed on the corresponding circuit board through the second end of the body, and the body extends into the first space. Correspondingly, the first image collector 23 includes a first body 231 and a first lens 232, and the second image collector 33 includes a second body 331 and a second lens 332. The first lens 232 and the second lens 332 are arranged back to back and face the two ends of the axial direction of the capsule shell 1 respectively. Optimally, the first image collector 23 and the second image collector 33 are centrally symmetrically distributed in the installation cavity of the capsule shell.

[0060] Optionally, the lens is a fisheye lens, whose viewing angle can exceed 180 degrees, thereby increasing the shooting viewing angle range of a single image collector. Of course, other types of lenses can also be selected according to actual needs.

[0061] The projections of at least the parts of the first image collector 23 and the second image collector 33 located in the first space on the cross section where the axis of the capsule shell 1 is located have overlapping parts along the radial direction of the capsule shell.

[0062] Alternatively, if Figure 2 , Figure 4 and Figure 5 As shown, in this embodiment, the second end of the first body 231 is penetrated and fixed on the first circuit board 21, and the end face of the second end does not extend out of the outer wall surface of the first circuit board 21. The first end of the first body 231 extends into the first space, extends toward the second circuit board 31, passes through the second circuit board 31 and then extends outward. The first lens 232 is fixed on the first end of the first body 231 so that the first lens 232 is located on the outside of the second circuit board 31.

[0063] Similarly, the second end of the second body 331 is penetrated and fixed on the second circuit board 31, and the end face of the second end does not extend out of the outer wall surface of the second circuit board 31. The first end of the second body 331 extends into the first space, extends toward the first circuit board 21, passes through the first circuit board 21 and then extends outward. The second lens 332 is fixed on the first end of the second body 331 so that the second lens 332 is located on the outside of the first circuit board 21, so that the first image collector 23 and the second image collector 33 are arranged in opposite directions in the axial direction of the capsule shell 1 and staggered in the radial direction.

[0064] At this time, the projections of the first body 231 and the second body 331 in the first space on the cross section where the axis of the capsule shell 1 is located have a first overlapping part along the above-mentioned radial direction, and the length of the first overlapping part in the axial direction is n1; at the same time, the projections of the first body 231 and the second body 331 on the first circuit board and the second circuit board 31 on the cross section where the axis of the capsule shell 1 is located respectively have a second overlapping part along the above-mentioned radial direction, and the axial length of the second overlapping part is n2, then the total length of the overlapping part of the projections of the first image collector 23 and the second image collector 33 on the above-mentioned cross section along the above-mentioned radial direction is L3=n1+2n2.

[0065] The length L0 of each existing image acquisition mechanism itself = the length m1 of the image acquisition device + the length m2 of the circuit board + the length m3 of the power supply component. Since the first body 231 passes through the second circuit board 31 and the second body 331 passes through the first circuit board 21, the thickness of the two circuit boards is also included in the above-mentioned overlapping part, and the axial length of the two sets of image acquisition mechanisms in the capsule shell 1 is further shortened, and the length of the entire capsule shell 1 is further shortened, so that the length L of the capsule shell 1 in this embodiment is less than the length L' of the capsule shell 1 in the prior art, so that the capsule endoscope of this structure has a small size while increasing the shooting angle range. Before the endoscope enters the intestine, the person needs to empty the small accommodation area in the intestine, and the endoscope is not easily surrounded by the stool in the intestine, which can improve the accuracy of the endoscope's detection of the intestine, and the probability of the doctor making a misdiagnosis based on the image collected by the endoscope is reduced.

[0066] like Figure 2 and Figure 4 As shown, the first power supply component and the second power supply component 32 are both distributed in the first space, for example, the first power supply component and the second power supply component 32 are arranged side by side and abutted against each other, and the first power supply component is provided with a first clearance hole 212 and a first mounting hole 211; the second power supply component 32 is provided with a second clearance hole 312 and a second mounting hole 311; the first mounting hole 211 and the first clearance hole 212 are respectively provided for the first body 231 and the second body 331 to pass through; the second mounting hole 311 and the second clearance hole 312 are respectively provided for the second body and the first body to pass through. That is, any power supply component is provided with a mounting hole or a clearance hole for the first body and the second body to pass through respectively.

[0067] The two power supply components are distributed in the first space, and the power supply components do not need to occupy any length in the axial direction of the capsule shell 1, further shortening the length of the two sets of image acquisition mechanisms. Figure 6 As shown, at this time, the length L of the capsule shell 1 of the present application is 2m1-L3+2L1+2L2, which further shortens the length of the capsule shell 1, making the size of the capsule shell 1 smaller and the structure more compact.

[0068] As a modified embodiment, the first power supply component and the second power supply component 32 may also be annular batteries, with the inner holes of the annular batteries serving as respective clearance holes and mounting holes. Alternatively, one may be annular, and the other may still be provided with the aforementioned mounting holes and clearance holes.

[0069] The outer peripheral wall of any of the above-mentioned circuit boards and the outer peripheral wall of any of the power supply components are in contact with the inner peripheral wall of the capsule shell 1, so as to realize the installation and matching of the power supply component, the circuit board and the capsule shell 1. Figure 5As shown, the circuit board is in the form of a first disc, and any power supply component is in the form of a second disc. The outer circumferences of the first disc and the second disc are consistent, so that the outer circumferences of the two discs are easily abutted against the inner wall of the capsule shell 1 to achieve installation with the capsule shell 1. Alternatively, only the circuit board is in the form of a first disc, and the power supply component is other structures, the outer circumference of the first disc abuts against the inner wall of the capsule shell 1, and the other structures are indirectly connected to the capsule shell 1 by being fixed on the circuit board.

[0070] like Figure 2 and Figure 3 As shown, each set of image acquisition mechanism also includes at least two lighting components for providing light to the lens. Among them, the lighting component corresponding to the first image acquisition device 23 is the first lighting component 24, and the lighting component corresponding to the second image acquisition component is the second lighting component 34. The first lighting component is arranged on the second circuit board and distributed on the periphery of the first lens 232; similarly, the second lighting component is arranged on the first circuit board and distributed on the periphery of the second lens 332. The first circuit board 21 and the second circuit board 31 are electrically connected, such as by a flexible circuit board connection or a wire connection, so that the first lighting component is connected to the first circuit board, so that the control unit 4 on the first circuit board 21 can control its opening or closing; correspondingly, the second lighting component is connected to the second circuit board, so that the control unit 4 on the second circuit board 31 can control its opening or closing.

[0071] For example, the lighting component is an LED lamp, and optionally, there are three, four, five, six, etc. The specific number of LED lamps is not limited and is selected according to needs.

[0072] like Figure 2 , Figure 3 and Figure 4 As shown, any set of image acquisition mechanism also includes a control unit 4 electrically connected and fixed on the circuit board. The control unit 4 can be formed by an integrated chip to control the image collector to acquire images, and control the opening and closing of the lighting components according to the acquired image information; it has the function of compressing the acquired image data and uploading the data to the outside world, and also receives external command information.

[0073] For example, the lighting components can be automatically identified and turned on by image recognition algorithms, that is, whether the light source needs to be controlled can be determined by whether the image is abnormal. The data is uploaded to the outside world through a wireless transceiver module, such as a wireless antenna integrated on a chip or provided on a circuit board.

[0074] As the best implementation, Figure 4As shown, the first image collector and the second image collector are centrally symmetrically arranged on both sides of the axis of the capsule shell, and the side walls of the first image collector and the second image collector that contact each other in the axial direction of the capsule shell fall on the axis of the capsule shell. On this basis, as a more preferred embodiment, the first image collector and the second image collector satisfy the following relationship:

[0075] Wherein α is the field of view of the lens of the image collector, and α is greater than 180 degrees; m1 is the axial length of the image collector in the capsule shell; h is the radial width of the image collector in the capsule shell, and r is the maximum radius of the capsule shell; L3 is the length of the overlapping part of the projections of the two image collectors on the cross section along the above radial direction.

[0076] For a capsule endoscope with this structure, when the parameters of the two image collectors satisfy the above formula, the lenses of the two image collectors can cooperate to achieve shooting within the full viewing angle range. When the image collector is selected, r, h, m1, and α in the above relationship are all known constants. L3 is calculated by the above formula, and the overlapping positions of the two image collectors are specifically set according to this L3. Therefore, the capsule endoscope can achieve shooting within the full viewing angle range while being small in size and more compact in structure.

[0077] For example, the field of view angle α of the lens is 240 degrees, and generally h≤3mm, for example, h=2mm, r=5mm, m1=3.6mm, and the parameters are substituted into the above formula, and L3=2.581mm is calculated. Therefore, the length of the overlapping part of the two image collectors is set to 2.581mm according to L3.

[0078] Example 2

[0079] This embodiment provides a capsule endoscope, such as Figure 7 and Figure 8 As shown, compared with the capsule endoscope provided in Example 1, the difference is that:

[0080] The structures of the power supply components are different. The above-mentioned clearance holes and installation holes are not provided on the first power supply component 22 and the second power supply component 32. The first power supply component 22 and the second power supply component 32 are still arranged in the first space. At this time, the first power supply component 22 is clamped between the first circuit board 21 and the second circuit board 31, and the second power supply component 32 is clamped between the first circuit board 21 and the second circuit board 31. The first power supply component 22 and the second power supply component 32 are arranged away from the first body 231 and the second body 331. There can be multiple first power supply components 22 and multiple second power supply components 32. The projections of the first power supply component 22 and the second power supply component 32 on the above-mentioned cross section in the first space have overlapping parts along the radial direction of the capsule shell. Other structural settings are the same as those in Example 1 and will not be repeated here.

[0081] In the capsule endoscope of this embodiment, due to the different structures of the power supply components, the projections of the first power supply component 22 and the second power supply component 32 in the first space on the cross section have an overlapping portion in the radial direction of the capsule shell. At the same time, the projections of the first body 231 and the second body 331 in the first space, the first circuit board 21, and the second circuit board 31 on the above-mentioned cross section have an overlapping portion in the radial direction of the capsule shell, which can also achieve the effect of shortening the size of the entire capsule shell 1 in its axial direction.

[0082] As a variant implementation of Example 1 or Example 2, the first body can be directly fixed on a side surface of the first circuit board without being embedded in the first circuit board; similarly, the second body can be directly fixed on a side surface of the second circuit board without being embedded in the second circuit board.

[0083] Example 3

[0084] This embodiment provides a capsule endoscope, which is different from the capsule endoscopes provided in Embodiment 1 and Embodiment 2 in that:

[0085] The first lens 232 is located outside the first circuit board 21, and the second lens 332 is located outside the second circuit board 31. The projections of the first body 231 and the second body 331 in the first space on the above-mentioned cross section have an overlapping part along the radial direction of the capsule shell. The first body 231 no longer passes through the second circuit board 31, and the second body 331 no longer passes through the first circuit board 21. The first power supply component 22 and the second power supply component 32 are arranged in the first space. The projections of the two power supply components on the above-mentioned cross section may have no overlapping parts or may have overlapping parts along the radial direction of the capsule shell, which can also shorten the axial length of the two sets of image acquisition mechanisms, thereby shortening the axial length of the entire capsule shell 1.

[0086] Example 4

[0087] This embodiment provides a capsule endoscope, which is different from any of the capsule endoscopes provided in Embodiment 1, Embodiment 2 and Embodiment 3 in that:

[0088] The first lens 232 and the first power supply component 22 are distributed on both sides of the first circuit board 21, and the first lens 232 is located on the outside of the first circuit board 21. The second lens 332 and the second power supply component 32 are distributed on both sides of the second circuit board 31, and the second lens 332 is located on the outside of the second circuit board 31. At this time, the first body 231 does not pass through the second circuit board 31, and the second body 331 does not pass through the first circuit board 21. The two are arranged back to back, and the projections of the first body 231 and the second body 331 in the above-mentioned cross section have no overlapping parts along the radial direction of the capsule shell. The first power supply component 22 and the second power supply component 32 are distributed in the first space, and the projections on the cross section have overlapping parts along the radial direction of the capsule shell, which can also shorten the length of the two sets of image acquisition mechanisms, thereby shortening the axial length of the entire capsule shell 1.

[0089] Example 5

[0090] This embodiment provides a capsule endoscope, which is different from any of the capsule endoscopes provided in Embodiment 1, Embodiment 2, Embodiment 3 and Embodiment 4 in that:

[0091] The first body 231 is arranged on the first circuit board 21, and its first end is located outside the first circuit board 21, and its second end extends into the first space, and the first power supply component 22 is distributed in the first space; the second body 331 is fixed on the first circuit board 21 and does not extend into the first space, and the second power supply component 32 is distributed in the first space, then the second power supply component 32 and the part of the first body 231 in the first space have an overlapping part in the radial direction of the capsule shell in the projection of the above-mentioned cross section, which can also shorten the axial length of the entire capsule shell 1; and, the first power supply component 22 of the first image collector 23 and the part of the first body 231 in the first space have an overlapping part in the projection of the above-mentioned cross section in the radial direction of the capsule shell, which can further shorten the axial length of the image collector in the capsule shell 1.

[0092] As a variation, the arrangement of the first image collector 23 and the arrangement of the second image collector 33 may be swapped, which can also achieve the above-mentioned shortening of the axial length of the entire capsule shell 1 .

[0093] In addition, as a variation of the above five embodiments, the projections of the first image collector and the second image collector on the longitudinal section where the axis of the capsule shell is located can overlap or be staggered; it is sufficient that the projections on the cross section have overlapping parts along the radial direction of the capsule. Figure 4 As shown, the first image collector and the second image collector, in Figure 4 They can be staggered in the vertical direction, and of course they can be arranged at the same height.

[0094] In addition, there may be multiple sets of image acquisition mechanisms, with two sets of image acquisition mechanisms as a basis, for example, two or three sets of first image acquisition mechanisms and two or three sets of second image acquisition mechanisms, all of the first image acquisition mechanisms are arranged side by side in the axial direction of the capsule shell and are evenly distributed in the circumferential direction of the capsule shell; all of the second image acquisition mechanisms are arranged side by side in the axial direction of the capsule shell and are evenly distributed in the circumferential direction of the capsule shell.

[0095] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A capsule endoscope, characterized in that: include A capsule housing (1) having a mounting cavity; At least two sets of image acquisition mechanisms are arranged in the installation cavity; any one set of the image acquisition mechanisms comprises a circuit board, a power supply component and an image acquisition device electrically connected and mounted on the circuit board; the circuit boards of the two sets of the image acquisition mechanisms are arranged relative to each other in the axial direction of the capsule shell (1), and a first space is formed between the two sets of the circuit boards; the image acquisition devices of the two sets of the image acquisition mechanisms extend in the axial direction of the capsule shell (1) and are arranged staggered in the radial direction, and the lenses of the image acquisition devices are arranged in reverse and face the two axial ends of the capsule shell (1) respectively; the power supply components in the two sets of the image acquisition mechanisms are distributed in the first space; A power supply component and / or image collector of one set of the image acquisition mechanism and a power supply component and / or image collector of another set of the image acquisition mechanism, at least the projection of the portion located in the first space on the cross section where the axis of the capsule shell (1) is located, have an overlapping portion along the radial direction of the capsule shell; The overlapping portion is suitable for reducing the axial length of the two sets of the image acquisition mechanisms, and the length of the capsule shell (1) is L=2(L0-m2)-L3+2L1+2L2, where L0 is the length of the image acquisition mechanism itself, L1 is the distance between the lens and the axial end of the adjacent capsule shell, L2 is the thickness of the capsule shell, L3 is the projection of the two image collectors on the cross section, and the length of the overlapping portion along the radial direction of the capsule shell; m2 is the length of the circuit board; or; The overlapping portion is suitable for shortening the length of each set of the image acquisition mechanism itself, and the length of the capsule shell (1) is L=2(L0-m3-m2)-L3+2L1+2L2=2m1-L3+2L1+2L2, where m1 is the axial length of the image acquisition device in the capsule shell, and m3 is the length of the power supply component.

2. The capsule endoscope according to claim 1, characterized in that: Any of the image collectors comprises a body and a lens fixed on a first end of the body; the image collectors are fixed on the respective corresponding circuit boards through the second end of the body thereon, and the body extends into the first space; The projections of the parts of the bodies of the image collectors in the two sets of image collection mechanisms located in the first space on the cross section have overlapping parts along the radial direction.

3. The capsule endoscope according to claim 2, characterized in that: The two sets of image acquisition mechanisms are respectively a first image acquisition mechanism and a second image acquisition mechanism, and the first image acquisition mechanism correspondingly comprises a first circuit board (21), a first power supply component (22) and a first image acquisition device (23), and the second image acquisition mechanism comprises a second circuit board (31), a second power supply component (32) and a second image acquisition device (33); The first end of the first body (231) of the first image collector (23) extends toward the second circuit board (31) and passes through the second circuit board (31) and then protrudes outwards; The first end of the second body (331) of the second image collector (33) extends toward the first circuit board (21) and passes through the first circuit board (21) and then protrudes outwards; The first lens (232) of the first image collector (23) and the second lens (332) of the second image collector (33) are respectively located on the outside of the second circuit board (31) and the first circuit board (21).

4. The capsule endoscope according to claim 3, characterized in that: The first power supply component (22) and the second power supply component (32) are arranged side by side and in contact with each other, and any one of the power supply components is provided with a mounting hole or a clearance hole for the first body (231) and the second body (331) to pass through respectively.

5. The capsule endoscope according to claim 4, characterized in that: At least one of the first power supply component and the second power supply component (32) is in a ring shape, and an inner hole of the ring serves as a mounting hole or a clearance hole of the power supply component.

6. The capsule endoscope according to claim 3, characterized in that: The first power supply component and the second power supply component extend in the axial direction of the capsule shell and are staggered in the radial direction, and their projections on the cross section have overlapping parts along the radial direction.

7. The capsule endoscope according to any one of claims 1 to 6, characterized in that: The outer peripheral wall surface of any one of the circuit boards abuts against the inner peripheral wall of the capsule shell (1).

8. The capsule endoscope according to any one of claims 3 to 6, characterized in that: Any set of the image acquisition mechanism further comprises at least two lighting components; the first lighting component (24) of the first image acquisition mechanism is mounted on the second circuit board (31) and surrounds the outer periphery of the first lens (232); the second lighting component (34) of the second image acquisition mechanism is mounted on the first circuit board (21) and surrounds the outer periphery of the second lens (332).

9. The capsule endoscope according to any one of claims 3 to 6, characterized in that: The first image collector and the second image collector are centrally symmetrically arranged on both sides of the axis of the capsule shell, and the side wall where the first image collector and the second image collector contact each other falls on the axis of the capsule shell, and the first image collector and the second image collector satisfy the following relationship: , where is the field of view of the image collector’s lens, and >180 degrees; m1 is the axial length of the image collector in the capsule shell; h is the radial width of the image collector in the capsule shell, r is the maximum radius of the capsule shell; L3 is the projection of the two image collectors on the cross section, and the length of the overlapping part along the radial direction of the capsule shell.

10. The capsule endoscope according to any one of claims 1 to 6, characterized in that: The capsule shell (1) is in the shape of a rugby ball; and / or The two sets of image collectors of the image collection mechanism are centrally symmetrically distributed in the installation cavity of the capsule shell.

Images