CN112057027A

CN112057027A - Capsule endoscope and antenna preparation method thereof

Info

Publication number: CN112057027A
Application number: CN202010765193.5A
Authority: CN
Inventors: 刘雷; 段晓东
Original assignee: Ankon Medical Technologies Shanghai Ltd
Current assignee: Ankon Medical Technologies Shanghai Ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2020-12-11

Abstract

The application discloses capsule endoscope and antenna preparation method thereof, and the capsule endoscope comprises: the shell is a closed cavity and comprises at least one transparent end shell matched with the lens assembly and a rear shell matched with the end shell; the antenna comprises an internal functional component, a circuit board and a battery which are positioned in the shell and electrically connected with each other, wherein the circuit board at least comprises an antenna transceiving circuit board; and the antenna is integrated on the transparent end part shell, arranged on the inner side of the shell and electrically connected with the antenna transceiving circuit board. According to the capsule endoscope, the antenna and the end part of the capsule endoscope shell are integrated into a whole, so that the internal space of the capsule endoscope occupied by the antenna is saved, and convenience is provided for hardware addition and function upgrade of the capsule endoscope.

Description

Capsule endoscope and antenna preparation method thereof

Technical Field

The invention relates to the technical field of medical equipment, in particular to a capsule endoscope and a preparation method of an antenna of the capsule endoscope.

Background

With the development of capsule endoscope technology, capsule endoscopes are more and more put into clinical use. In clinical use, the functional requirements of capsule endoscopes are increasing. However, the capsule endoscope has a small size, a complex structure, a variety of sensors and various electronic components integrated inside, and a space for adding functional hardware is lacked.

Conventional capsule endoscopes typically consist of an end housing, a back housing, a battery, an imaging element, a wireless module, and an antenna. The antenna is a key component of the capsule endoscope, and the quality of the antenna directly influences whether image information acquired by the endoscope can be timely and effectively transmitted. In order to improve the performance of the antenna, various materials are provided, and the capsule endoscope antenna with various shapes and different installation modes is provided in the prior art. The technical schemes improve the wireless performance of the capsule endoscope, but also improve the processing complexity of the antenna, occupy a large amount of internal space of the capsule, and are very disadvantageous to the addition of hardware for increasing the requirements on the functions of the capsule endoscope.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a capsule endoscope and a method for manufacturing an antenna thereof, so as to save the internal space of the capsule endoscope occupied by the antenna and provide convenience for increasing functions and hardware of the capsule endoscope.

According to an aspect of the present invention, there is provided a capsule endoscope for image capturing through a lens assembly, including:

the shell is a closed cavity and comprises at least one transparent end shell matched with the lens assembly and a rear shell matched with the end shell;

the antenna comprises an inner functional component, a circuit board and a battery, wherein the inner functional component, the circuit board and the battery are positioned in the shell and are electrically connected;

and the antenna is integrated in the transparent end part shell, is arranged on the inner side of the shell and is electrically connected with the antenna transceiving circuit board.

Further, the end portion shell comprises a lens viewing angle area and a non-lens viewing angle area, the antenna is arranged in at least one area of the lens viewing angle area and the non-lens viewing angle area of the end portion shell, and the portion, located in the lens viewing angle area, of the antenna is a transparent portion.

Furthermore, the transparent part of the antenna is an indium tin oxide film prepared by adopting a mask method physical deposition coating process; the thickness of the antenna is 80 to 130 nanometers, and/or the width of the antenna is 1 to 2 millimeters.

Further, the antenna is in a spiral ring shape or a spiral square shape.

Further, the part of the antenna located in the non-lens view angle area is a transparent part or a non-transparent part.

Furthermore, the antenna is connected with the circuit board through an antenna connecting sheet, and the antenna connecting sheet is an elastic contact connecting sheet.

Further, the width of the antenna connection pad is equal to or greater than the width of the antenna.

Furthermore, the end part of the antenna connecting sheet connected with the antenna and the surface of the antenna connecting sheet contacting with the antenna are also provided with mounting grooves which are tightly embedded with the antenna.

Furthermore, the circuit board comprises a lighting circuit board, an image acquisition and processing circuit board, a power management board and a wireless transceiving circuit board, and the circuit boards are all located at the same end of the battery.

Further, the capsule endoscope also comprises a containing cavity which is arranged at one end of the capsule endoscope far away from the lens assembly.

According to another aspect of the present invention, there is provided a method for manufacturing an antenna of a capsule endoscope, the housing of the capsule endoscope comprising at least one transparent end casing matched with a lens assembly, the antenna being integrated with the end casing, wherein the method for manufacturing the antenna of the capsule endoscope comprises:

making a mold, which is conformal with the inner wall of the end shell and is formed with a pattern in the shape of the antenna;

installing the mold in the inner side of the end shell so that the mold is attached to the inner wall of the end shell;

forming an indium tin oxide thin film of 80 to 130 nm on an inner wall of the end cap through the mold having the pattern;

and separating the mold to obtain the antenna integrated on the end shell.

According to the capsule endoscope provided by the invention, the antenna and the end part shell of the capsule endoscope shell are integrated into a whole, so that the internal space of the capsule endoscope occupied by the antenna is saved, and convenience is provided for hardware addition and function upgrade of the capsule endoscope.

According to the preparation method of the antenna of the capsule endoscope, the antenna is manufactured on the transparent end shell of the shell, so that the internal space of the capsule endoscope is saved, the receiving area of the antenna is increased, and the communication performance of the capsule endoscope is optimized.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 shows a schematic structural diagram of a capsule endoscope according to an embodiment of the present invention;

FIG. 2 shows a schematic view of an antenna configuration of a capsule endoscope according to an embodiment of the present invention;

FIG. 3 shows another antenna configuration of a capsule endoscope according to an embodiment of the present invention.

Detailed Description

Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples.

Fig. 1 shows a schematic structural view of a capsule endoscope according to an embodiment of the present invention. The capsule endoscope 100 includes: rear housing 111, end housing 112, lens assembly 120, circuit board 130, internal functional components 140, battery 150, and antenna connection pads 160.

The rear case 111 and the end portion case 112 are closed to form the housing 11, and the end portion case 112 is a transparent member corresponding to one end portion case 112 of the housing 11, and the lens assembly 120 faces the end portion case 112 to capture an external image. In the present embodiment, one transparent end housing 112 is provided, and in other embodiments, a plurality of transparent end housings 112 and a plurality of lens assemblies 120 may be provided to simultaneously capture external image information in a plurality of directions, wherein the antenna 17 is provided in one or more of the plurality of transparent housings 112.

In one particular embodiment of the present application, capsule endoscope 100 includes 2 transparent end housings 112 and 2 lens assemblies 120, with antenna 17 disposed on one of the end housings 112.

In another particular embodiment of the present application, capsule endoscope 100 includes two transparent end housings 112 and two lens assemblies 120. Meanwhile, the number of the antennas 17 is also two, and the antennas are respectively disposed on the end portion housings 112 at both ends of the housing 11. The positions of the circuit board 130 and the internal functional components 140 may adopt different designs under the condition of facilitating the arrangement of devices inside the capsule endoscope 100, and are not described in detail in this embodiment.

The area identified by battery 150 in fig. 1 may include a battery and a magnet that can be driven by a control device of the capsule endoscope system to control the movement of capsule endoscope 100 and to change the posture of capsule endoscope 100 to acquire image information.

The circuit board 130 includes a lighting circuit board, an image collecting and processing circuit board, a power management board, and a wireless transceiver circuit board 131, and is electrically connected to the battery 150. In this embodiment, the circuit board 130 is a combination of the above-mentioned multiple circuit boards, and in other embodiments, the circuit board 130 may be a single integrated circuit board integrating the functional circuits of the above-mentioned multiple circuit boards.

In an embodiment of the present application, the internal functional component 140 includes an image collecting and processing chip, a wireless transceiver processor, a power management chip, and the like, and is electrically connected to a corresponding circuit board of the circuit board 130 to implement operations such as lighting, image collecting, image processing, wireless transceiver, power management, and the like.

In the present embodiment, the antenna 17 is integrated on the end housing 112 (integrated on the inner wall of the end housing 112), and is connected to the wireless transceiving circuit board 131. The end housing 112 may alternatively be made of a biocompatible polycarbonate material. To ensure the quality of the image capture module, an illumination source (not shown) is disposed around the lens assembly 120, with both the image capture direction (i.e., the capture direction) of the lens assembly 120 and the illumination direction of the illumination source facing the end housing 112.

In the embodiment of the present application, the antenna 17 may be connected to the antenna transceiver circuit board 131 through an antenna connecting pad 160, which is a conductive sheet, a conductive wire, or the like, and the material of the antenna connecting pad may be a conductive material such as copper. The antenna connection pad 160 is fixedly connected to the antenna transceiver circuit board 131 and/or the antenna 17. Specifically, the antenna connection piece 160 may be connected to the antenna 17 and the antenna transmission/reception circuit 131 by welding (e.g., soldering).

The antenna integration of conventional capsule endoscope sets up on antenna receiving and dispatching circuit board, occupies antenna receiving and dispatching circuit board's space, and the antenna is located capsule endoscope's inner space, occupies capsule endoscope's inner space, is unfavorable for antenna receiving and dispatching circuit board's circuit arrangement and function to expand, is unfavorable for capsule endoscope's miniaturized requirement. Also, in the prior art, the antenna transceiver circuit board is disposed at the bottom end (the end opposite to the end housing), and other circuit boards, such as an image capture and processing circuit board, are disposed at positions close to the end housing, corresponding to the lens assembly. In this design, because parts such as can the interval battery are inevitable between antenna receiving and dispatching circuit board and the image acquisition circuit board, consequently need stride across this interval connection antenna receiving and dispatching circuit board and antenna through the connecting wire, and extra connecting wire can occupy the inner space of capsule endoscope, be unfavorable for the development of function and the miniaturized design of capsule endoscope, and, antenna receiving and dispatching circuit board sets up in the bottom, and the space of capsule endoscope bottom is less, make the size of antenna receiving and dispatching circuit board limited, and then influence the size of antenna, influence the receiving area of antenna, communication effect is not good.

The capsule endoscope 100 of the embodiment of the present application integrates the antenna 17 on the end portion housing 112, and the connection of the antenna and the antenna transceiver circuit board 131 occupies a small area of the antenna transceiver circuit board 131, which is beneficial to further miniaturization of the antenna transceiver circuit board 131 and facilitates the miniaturization design of the capsule endoscope 100. And the antenna 17 is integrated on the end part housing 112, and the receiving area thereof can be expanded to the curved surface area of the end part housing 112, which is larger than the plane area of the antenna transceiving circuit board 131, and the signal transceiving effect is good. The antenna transceiving circuit board 131 also does not need to be arranged at the bottom end, the size of the antenna transceiving circuit board 131 can be expanded to a certain extent, the circuit arrangement of the antenna transceiving circuit board 131 is facilitated, the performance of the antenna transceiving circuit board 131 is improved, and the communication effect of the capsule endoscope 100 is further improved.

The end housing 112 includes a lens viewing angle region and a non-lens viewing angle region, as referenced in fig. 1. The upper portion of the dotted line is a lens viewing angle region, and the lower portion of the dotted line is a non-lens viewing angle region, which is a light path for image lighting of the lens assembly 120 and is maintained in a highly transparent state. Correspondingly, the antenna is integrated on the inner wall of the end shell 112, in the end shell 112, the antenna 17 is at least located in at least one area of a lens viewing angle area and a non-lens viewing angle area, and the part located in the lens viewing angle area is a transparent part made of transparent materials, so that the transparency of the lens viewing angle area is guaranteed, and the definition of image collection is kept.

It should be noted that fig. 1 shows only one possible case of dividing the lens view area and the non-lens view area, namely, dividing the lens view angle by 180 °. In other embodiments of the present application, the lens viewing angle area and the non-lens viewing angle area of the end portion housing 112 may be divided according to the angles of the lens viewing angles of 120 °, 130 °, 140 °, 150 °, and the like, as long as it is ensured that the lens assembly 120 can clearly perform image capturing through the lens viewing angle area. It should be noted that the transparent portion of the antenna 17 corresponds to the coverage area of the lens viewing angle area, that is, the portion of the antenna 17 that needs to be made transparent can be adjusted according to the viewing angle. Correspondingly, the antenna 17 disposed in the non-lens viewing angle region may be made of the same material as the transparent portion, or may be made of a non-transparent material (such as stainless steel, copper, etc.), as long as the function of transmitting and receiving signals of the antenna 17 can be ensured and the antenna transmitting and receiving circuit board 131 is electrically connected, which will not be described herein again.

The capsule endoscope 100 of the embodiment of the present invention integrates the antenna 17 with the end portion housing 112, and at the same time, the antenna transceiver circuit board 131 is designed to be disposed close to the end portion housing 112, and the antenna 17 is connected to the antenna transceiver circuit board 131 nearby, thereby shortening the line path, reducing the line loss, and facilitating the improvement of the antenna transceiver performance. And the antenna 17 does not occupy the space of the circuit board 130, which is beneficial to the miniaturization or function expansion of the circuit board 130. The closer the antenna 17 is provided to the end of the capsule endoscope 100, the more advantageous is the reduction in signal attenuation and signal interference, and the improvement in signal transmission quality, thereby ensuring control of the capsule endoscope 100 by an external device and propagation of image signals, command signals, and the like between the capsule endoscope 100 and the external device (not shown). The external devices may include a control device, a signal interaction device, an image information storage device, and the like.

The capsule endoscope 100 according to the embodiment of the present invention also has the circuit board 130 integrated into the front end (corresponding to the end housing 112 near the lens assembly 120, the image capturing end) of the capsule endoscope 100, and the battery 150 disposed at the rear end (the other end opposite to the front end, which is the lower end of the capsule endoscope 100 if fig. 1 in the drawings is used as a reference).

In the present embodiment, the circuit boards 130 are all located at the same end (end near the end housing 112) of the battery 150 within the capsule endoscope 100, so that the circuit boards 130 are compactly distributed, and the integration of the circuit boards 130 can be improved. In other embodiments, multiple functions can be integrated on the same circuit board 130, the number of circuit boards required for realizing the same functions is reduced, the internal space of the capsule endoscope 100 is further saved, convenience is provided for hardware addition of the capsule endoscope 100, and function expansion of the capsule endoscope 100 is facilitated.

FIG. 2 shows a schematic view of an antenna structure of capsule endoscope 100 according to an embodiment of the present invention. The left side of fig. 2 is a schematic top view of the spiral loop antenna integrated in the end housing 112, and the right side of fig. 2 is a schematic right side view of the end housing 112 of the spiral loop antenna. The antenna includes an antenna body 170 and a connecting end 171, the top view of the end housing 112 is circular, and the antenna body 170 is attached to the inner wall of the end housing 112 in a spiral ring shape (for example, the antenna body 170 is in a spiral ring shape facing clockwise inward). In combination with the side structure of the gradually-changed sawtooth shape in the right view of fig. 2, the antenna body 170 is spirally raised to fit the inner wall of the end portion housing 112, and the inner diameter of the antenna body 170 from the connecting end 171 to the tip end of the end portion housing 112 of the capsule endoscope 100 is gradually reduced. Because the end housing 112 has a certain thickness, the antenna body 170 shown in fig. 2 is spaced a certain distance from the outer wall of the end housing 112 as shown.

In other embodiments, the antenna body 170 may also be annular, rectilinear, undulating, etc. In this embodiment, the antenna body 170 of the antenna 17 is spiral (including spiral square, spiral ring, etc.), and compared with other shapes, the spiral shape is beneficial to increasing the receiving area of the antenna 17 and improving the signal transceiving capacity. In the drawings of the present application, the number of turns of the antenna body 170 is an exemplary illustration, and the actual design of the antenna body 170 is based on the standard of reference for increasing the receiving area of the antenna.

The connecting end 171 is connected to the antenna body 170 and the antenna connecting sheet 160, the electrical signal output by the antenna transceiving circuit board 131 is sequentially transmitted to the antenna body 170 through the antenna connecting sheet 160 and the connecting end 171 to transmit information, and the receiving flow is opposite to the receiving flow.

In the embodiment of the present invention, the antenna connection pad 160 is preferably a flexible contact connection pad, and the material thereof may be nickel plated SPCC (a standard of common cold rolled steel plate) or copper material.

Further, in this embodiment, the width of the antenna connection pad 160 is equal to or greater than the width of the antenna. The width of the antenna connection pad 160 is preferably the same as the width of the connection 171 or exceeds the width of the connection 171 to ensure minimal antenna connection pad-to-antenna feed loss.

Specifically, in this embodiment, when the antenna connection piece 160 is an elastic contact connection piece, the elastic contact connection piece abuts against the housing 11 under the action of its own pre-tightening force or has a tendency to abut against the housing 11, and the connection end 171 of the antenna 17 is located between the housing 11 and the antenna connection piece 160, so that the connection end 171 of the antenna 17 is firmly connected with the elastic contact connection piece through the self-tightening force of the elastic contact connection piece.

The width and thickness of the antenna body 170 and the connecting end 171. In order to ensure a certain elastic contact strength, the antenna connecting sheet 160 preferably has a thickness of 0.1-0.5 mm, which is compatible with both elasticity and physical strength. The integration of the antenna 17 into the end housing 112 and the connection of the antenna connection sheet 160 to the antenna transceiver circuit board 131 facilitate the size reduction of the antenna transceiver circuit board 131, which can further reduce the size of the capsule endoscope 100. The use of the elastic contact connecting sheet allows the electrical connection with the antenna transceiver circuit board 131 to be achieved without a separate process of welding the antenna, and the production process of the capsule endoscope 100 can be simplified.

It should be noted that in the preferred embodiment of the present application, an end portion of the antenna connection piece 160 connected to the antenna 17 and a surface contacting the antenna 17 are further formed with mounting grooves (not shown). And the mounting groove is tightly embedded with the antenna, so that relative movement or relative movement trend between the antenna connecting plate 160 and the antenna 17 is further limited, the antenna connecting plate 160 and the antenna 17 are more tightly combined, and the connection strength (such as mechanical connection strength and electrical connection strength) between the antenna connecting plate 160 and the antenna 17 is further ensured.

Since the antenna of the present embodiment is integrated with the end casing 112 of the capsule endoscope 100, and the end casing 112 is a light-transmitting component of the capsule endoscope 100, the antenna 17 of the present embodiment is a transparent antenna, and at least the antenna body 170 (corresponding to the transparent portion of the antenna 17) is made of a transparent material, so as to avoid shielding the light beam of the illumination light source (not shown) and the image collection light behind the antenna, thereby ensuring the quality of image collection. Specifically, in the embodiment of the present application, the light transmittance of the transparent portion of the antenna body 170 may be greater than 90%, so that the finally obtained image is clear and fidelity. For the non-transparent portion of the antenna 17, a copper sheet or the like may be used.

The end housing 112 is dome-shaped (dome-shaped) having a spherical surface, and the antenna is integrated with the dome, and the receiving area of the antenna can be increased by using the wide area of the spherical surface, thereby improving the signal transceiving effect and the anti-interference capability of the antenna, and further effectively improving the performance of the capsule endoscope 100.

The antenna body 170 (especially the transparent portion of the antenna 17) is formed by a physical deposition process using a mask method to prepare an Indium Tin Oxide (ITO) thin film. The width of the ITO film is preferably 1-2 mm, the thickness is preferably 80-130 nm, and the antenna body 170 with the specification can have both conductivity and light transmittance. In addition, the transparent graphite electrode or the transparent nano silver wire electrode can be adopted and processed by a screen printing process, and the result also has good conductivity and light transmittance. The transparent portion of the antenna 17 may be made of the above-mentioned material, and the portion of the antenna 17 located in the non-viewing angle area of the lens may be made of copper, aluminum, or the like.

FIG. 3 shows another antenna configuration of capsule endoscope 100 according to an embodiment of the present invention. The left side of fig. 3 is a schematic top view of the spiral square antenna integrated in the end housing 112, and the right side of fig. 2 is a schematic front view of the end housing 112 of the spiral square antenna. The difference between this embodiment and the embodiment shown in fig. 2 is that in this embodiment, the antenna body 170 is in a spiral square shape (for example, the antenna body 170 is in a clockwise inward spiral square shape) and is attached to the inner wall of the end portion housing 112, the connecting end 171 is connected to the antenna connecting piece 160 at the lower end of the antenna, the end portion housing 112 has a certain thickness and corresponds to a square antenna, and the inner wall of the end portion housing 112 may also be in a square shape for processing.

The antenna body 170 is a spiral shape, which may be an arc shape, a straight shape or a combination thereof, and forms a wave-shaped spiral, a square spiral or a curved spiral.

It is worth mentioning that, in the embodiment of the present application, the capsule endoscope 100 further includes a receiving cavity 190, and the receiving cavity 190 is disposed at an end of the capsule endoscope far from the lens assembly 120. Since the antenna is integrated in the end housing 112 of the capsule endoscope 100, the pressure on the structural arrangement within the capsule endoscope 100 is reduced, so that a certain spatial margin can be reserved in the capsule endoscope 100. Specifically, in one embodiment, the accommodating cavity 190 is disposed at an end of the capsule endoscope remote from the lens assembly 120 and can be separated by a partition such as a diaphragm into separate spaces that can accommodate different functional units to perform different functions. For example, different types of sensors may be disposed within the receiving cavity 190, or formed as a vacuum cavity, or pre-stored markers, etc.

The capsule endoscope 100 according to the above embodiment of the present invention adopts the antenna integrated with the end casing 112 and the transparent conductive material, and it is not difficult to derive from the above analysis herein that the conventional circuit board layout may be adopted, that is, the antenna transceiver circuit board 131 is disposed at the tail end of the capsule endoscope 100 opposite to the front end, the antenna thereof is designed to be integrated with the end of the rear casing 111, the antenna of the present solution may not need to adopt the transparent material, and the antenna configuration thereof may be identical to the antenna configuration shown in fig. 2 and 3.

The capsule endoscope 100 of the invention integrates the antenna to the end part of the shell 11 by utilizing the redundant space in the end part shell 112 of the shell 11 of the capsule endoscope 100 and is arranged by being attached to the inner wall of the shell 11, thereby saving the space occupied by the original antenna, providing the space with hardware expansion requirement for the expansion of the antenna function and further reducing the cross section size of the capsule endoscope 100. The internal circuit board is designed compactly, the functional integration level of the circuit board is improved, the number of required circuit boards can be reduced, and the internal space of the capsule endoscope 100 is further saved. The capsule endoscope 100 of the present invention makes full use of space, improves the hardware integration of the capsule endoscope 100, and facilitates miniaturization and functional expansion of the capsule endoscope 100.

On the other hand, the application also provides a preparation method of the capsule endoscopic antenna, which comprises the following steps:

making a mold, which is conformal with the inner wall of the end portion housing 112 and is formed with a pattern in the shape of the antenna 17;

installing a mold in the inside of the end portion case 112 so that the mold is attached to the inner wall of the end portion case 112;

forming an indium tin oxide film of 80 to 130 nm on the inner wall of the end housing 112 through a patterned mold;

the mold is separated and the antenna 17 integrated in the end housing 112 is obtained.

Specifically, when the antenna 17 is manufactured by physical vapor deposition, a mask (not shown) is first formed, and the mask conforms to and closely fits the inner wall of the end portion housing 112. The mask is formed with a pattern, which is the shape of the antenna 17 to be integrated into the end portion housing 112, so that the position of the end portion housing 112 where the antenna 17 is to be integrated is exposed outside the mask. Parameters such as deposition speed, deposition time, deposition temperature, deposition pressure and the like of the physical vapor deposition are preset, so that an indium tin oxide film with the thickness of 80-130 nanometers is manufactured by the physical vapor deposition. The ito film, i.e., the antenna body 170 (especially the transparent portion), is closely attached to the inner wall of the end casing 112. The mask is then separated, i.e. the end housing 112 with the antenna 17 is obtained. The method further comprises the step of performing film coating treatment on the end part shell 112, so that the surface optical characteristics of the end part shell 112 are optimized, the light transmission effect is improved, the surface reflection is reduced, and the image acquisition effect of the capsule endoscope 100 is improved.

Other embodiments of the present application can also be manufactured by a screen printing method, and the manufacturing process is slightly different from the manufacturing process of the antenna by physical vapor deposition except for the process of the mold manufacturing and the film forming method, and other steps are basically the same and are not described herein again. In preparing the antenna 17 by screen printing, a screen is often used as a mold, and a printing operation is performed using a liquid material, thereby forming the antenna 17.

According to the method, the antenna is manufactured on the transparent end part shell 112 of the shell body 11 of the capsule endoscope 100, so that the internal space of the capsule endoscope 100 is saved, the receiving area of the antenna 17 is increased, and the communication performance of the capsule endoscope 100 is optimized.

While embodiments in accordance with the invention have been described above, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A capsule endoscope for image acquisition through a lens assembly, comprising:

2. The capsule endoscope of claim 1,

the end part shell comprises a lens viewing angle area and a non-lens viewing angle area, the antenna is arranged in at least one area of the lens viewing angle area and the non-lens viewing angle area of the end part shell, and the part of the antenna, which is positioned in the lens viewing angle area, is a transparent part.

3. The capsule endoscope of claim 2,

the transparent part of the antenna is an indium tin oxide film prepared by adopting a mask method physical deposition coating process; the thickness of the antenna is 80 to 130 nanometers, and/or the width of the antenna is 1 to 2 millimeters.

4. The capsule endoscope of claim 1,

the antenna is in a spiral ring shape or a spiral square shape.

5. The capsule endoscope of claim 1,

the part of the antenna, which is positioned in the non-lens viewing angle area, is a transparent part or a non-transparent part.

6. The capsule endoscope of any one of claims 1 to 5,

the antenna is connected with the circuit board through an antenna connecting sheet, and the antenna connecting sheet is an elastic contact connecting sheet.

7. The capsule endoscope of claim 6,

the width of the antenna connecting sheet is equal to or greater than the width of the antenna.

8. The capsule endoscope of claim 6,

the antenna connecting piece is connected with the end part of the antenna and the surface of the antenna, which is contacted with the antenna, is also provided with a mounting groove, and the mounting groove is tightly embedded with the antenna.

9. The capsule endoscope of claim 1,

the circuit board comprises a lighting circuit board, an image acquisition and processing circuit board, a power management board and a wireless transceiving circuit board, wherein the circuit boards are all located at the same end of the battery.

10. The capsule endoscope of claim 1,

the capsule endoscope further comprises a containing cavity, and the containing cavity is arranged at one end, far away from the lens assembly, of the capsule endoscope.

11. A method for preparing an antenna of a capsule endoscope, wherein a shell of the capsule endoscope comprises at least one transparent end shell matched with a lens assembly, the antenna is integrated in the end shell, and the method for manufacturing the antenna of the capsule endoscope comprises the following steps:

and separating the mold to obtain the antenna integrated on the end shell.