CN103393390A - Dual-video imaging capsule endoscope system based on wireless energy supply - Google Patents

Abstract

A dual-video imaging capsule endoscope system in the field of endoscope technology, comprising: a video imaging capsule endoscope, an external wireless energy supply device and a dual-channel external image processing device, the dual-channel external image processing device includes: an antenna, two high Frequency head, two collectors, processors, two storage devices and two display screens, the antenna receives two image signals from the dual-video imaging capsule endoscope, and transmits them to two high frequency heads respectively, and passes through two high-frequency signals respectively. After the amplification and mediation processing of the frequency head, it is transmitted to the processor through two collectors, and the processor converts it into two digital image signals corresponding to the image signal. The digital image signal is stored in two storage devices and displayed on two display screens respectively. , or transfer to a computer workstation. The invention can realize the detection of images of different angles and directions of the whole digestive tract, and reduces the missed detection rate.

Description

Dual video imaging capsule endoscopy system based on wireless energy supply

technical field

The present invention relates to a device in the field of endoscope technology, in particular to a wireless power supply-based dual-video imaging capsule endoscope system for detecting images of the digestive tract.

Background technique

Due to the accelerated pace of work and uneven diet, the incidence of digestive tract diseases is increasing day by day. Gastrointestinal diseases have become a common disease affecting the health of modern people. According to statistical analysis, digestive tract diseases are becoming younger and hidden direction development. The visual detection of digestive tract diseases plays a very important role in the prevention, diagnosis and treatment of digestive tract diseases. The total length of the human digestive tract is about 9 meters. Since the digestive tract is shaped as a slender pipe, it is distributed between various organs of the human body, and the entire digestive tract is The irregular and closed structure of the tract brings great difficulties to the clinical detection of digestive tract diseases.

There are mainly two types of visual detection of gastrointestinal diseases implemented clinically: gastrointestinal, colonoscopy and capsule endoscopy. A gastroscope or a colonoscope is inserted through the mouth and anus to detect gastrointestinal diseases, but due to the limitation of the length of the gastroscope and the colonoscope, the gastroscope can only detect the gastrointestinal diseases in the stomach and duodenum, and the colonoscope can only detect Gastrointestinal diseases below the colon, so gastroscopy and colonoscopy cannot detect diseases in the small intestine. At the same time, there may be a risk of gastric trauma and intestinal trauma during the detection process of gastroscopy and colonoscopy, which will bring great pain to the patient during the detection process. Capsule endoscope detection is a non-invasive detection method. After the patient takes the capsule endoscope orally, the detection of digestive tract diseases can be carried out without causing discomfort or pain to the patient. However, the power supply method of the existing capsule is powered by a button battery. , limited by the shape and structure of the capsule, the number of button batteries carried by the image capsule is limited, resulting in a limited working life of the image capsule. The clinical image capsule can only work for about 8 hours, and can only complete the diagnosis of some upper gastrointestinal diseases. The image capsule The working life of the digestive tract image is also related to the sampling rate and image resolution of the digestive tract image. The detection rate of the existing digestive tract image is only 2 frames per second. Improving the detection rate and image resolution of the digestive tract image can improve the correct rate of disease diagnosis , but improving the detection rate and image resolution of the digestive tract image will reduce the working time of the image capsule and shorten the length of the detected digestive tract. Therefore, the existing working mode and power supply method of the image capsule cannot meet the needs of detecting the entire digestive tract image .

After searching the prior art, it is found that the Chinese Patent Document No. CN102160774, with a publication date of 2011-08-24, discloses a video image capsule system for wireless energy supply in the field of medical equipment technology, including: capsule system, external wireless energy supply Device and in vitro image processing device, the capsule system is located in the digestive tract and collects environmental information of the digestive tract, the in vitro image processing device is connected to the capsule system in a wireless manner and transmits the video information of the capsule and outputs it graphically, and the in vitro wireless energy supply device supplies the capsule system with Alternating magnetic field provides energy. However, due to the bending and wrinkling of the human intestine in the human body in this prior art, the use of a single-head capsule will still cause missed detection, and the addition of a double-head imaging system to the capsule system will cause insufficient energy supply, which cannot meet the clinical needs of the entire digestive tract. The need for disease diagnosis.

Contents of the invention

Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a dual-video imaging capsule endoscopy system based on wireless energy supply, which can realize the detection of images in different angles and directions of the entire digestive tract, and reduce the missed detection rate.

The present invention is achieved through the following technical solutions. The present invention includes: a dual-video imaging capsule endoscope, an in vitro wireless energy supply device that provides energy for the dual-video imaging capsule endoscope, and a dual-channel in vitro image processing device, wherein:

The dual-channel external image processing device includes: a real-time receiving module and a computer workstation that communicate with each other.

The real-time receiving module includes: antenna, two high-frequency heads, two collectors, processor, two storages and two display screens, wherein: the antenna receives two image signals of the dual-video imaging capsule endoscope, And transmitted to two high-frequency heads respectively, after being amplified and mediated by the two high-frequency heads, they are transmitted to the processor through two collectors, and the processor converts them into two digital image signals corresponding to the image signal, and the digital image The signals are respectively stored in two storage devices, displayed on two display screens, or transmitted to a computer workstation.

The two ends of the dual-video imaging capsule endoscope respectively collect video images in the digestive tract to form two image signals, including: two optical ball heads symmetrically arranged at both ends, and two optical lenses respectively arranged inside the optical ball head , two lighting systems, two video image sensors, two main control systems, two image wireless sending devices, a rectifying device and a wireless energy receiving coil and housing, wherein: the optical lens provides the optical imaging distance for the video image sensor, The optical lens provides lighting for the video image sensor, the main control system is connected with the video image sensor and controls the video image sensor, the video image obtained by the video image sensor is output to the image wireless sending device, and the image wireless sending device converts the video image into electromagnetic waves and transmits Outside the body, the wireless energy receiving coil and the shell receive the alternating magnetic field emitted by the external wireless energy supply device, and generate an alternating electromotive force, which is filtered and rectified by a rectifier to generate a DC power supply, which is an image wireless transmission device , main control system, video image sensor and lighting system provide power.

The main control system includes: a power management circuit, a magnetically controlled Hall switch circuit, an MCU control circuit, and an analog switch circuit, wherein: the power management provides different voltages for different circuits, and the magnetically controlled Hall switch circuit provides power supply. Power down, MCU control circuit provides video sensor configuration.

The wireless image sending device includes: a low-frequency filter circuit, a low-frequency voltage divider circuit, a varactor diode frequency modulation oscillation circuit, a power amplifier circuit, and a transmitting antenna, wherein: the low-frequency filter circuit and the low-frequency voltage divider circuit convert the image signal into a suitable modulation Signal. The varactor diode oscillating circuit provides a carrier signal of a certain frequency, and the modulated signal is processed by the power amplifier and sent to the body by the transmitting antenna.

The external wireless energy supply device includes: an external wireless energy transmitting coil and a power controller, wherein: the power control converts the DC power into a control signal and transmits it to the external wireless energy transmitting coil, and the external wireless energy transmitting coil converts electric energy into AC variable magnetic field.

technical effect

The present invention obtains image information of different angles and directions of the inner wall of the gastrointestinal tract by setting imaging devices at both ends, so as to reduce missed detection; the detected image signals of the digestive tract are transmitted to the external dual-channel image receiver through wireless transmission, and the The dual-channel in vitro image receiver is displayed and saved, and the saved images can be played back and processed through the special software of the image workstation.

Compared with the existing capsule endoscopy system, the present invention adopts a dual-video image acquisition system to solve the problem that the existing capsule endoscopy cannot obtain image information in different directions and angles of the inner wall of the gastrointestinal tract without increasing the volume of the capsule , reduce the missed detection rate; adopt wireless energy supply technology to solve the problems of short working time, low image acquisition frequency and low image resolution when the existing capsule endoscope is powered by batteries. The present invention can also increase the frequency of image acquisition, realize simultaneous "continuous" acquisition of images from different angles of the digestive tract, improve the resolution of digestive tract image acquisition, and improve the correct rate of disease diagnosis by clinicians, which has important practical significance in clinical practice .

Description of drawings

Fig. 1 is the structural representation of figure of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the real-time receiving module;

Fig. 3 is a schematic diagram of the internal structure of the dual-video imaging capsule endoscope.

Detailed ways

The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

Example 1

As shown in Figure 1, this embodiment includes: a dual-video imaging capsule endoscope 13, an in vitro wireless energy supply device for providing energy to the dual-video imaging capsule endoscope 13, and a dual-channel external image processing device, wherein: the dual-channel external image processing The device includes: a real-time receiving module 11 and a computer workstation 12 communicating with each other.

As shown in Figure 2, the described real-time receiving module 11 includes: antenna, two tuners A, B, two collectors A, B, processor, two storages A, B and two display screens A , B, wherein: the antenna receives the two image signals of the dual-video imaging capsule endoscope 13, and transmits them to the two high-frequency heads A and B respectively, and after the amplification and mediation processing of the two high-frequency heads A and B respectively, via The two collectors A and B are transmitted to the processor, and the processor converts them into two digital image signals corresponding to the image signals. The digital image signals are stored in the two storages A and B and displayed on the two display screens A and B respectively. , or transmitted to the computer workstation 12.

As shown in Figure 3, the two ends of the dual-video imaging capsule endoscope 13 respectively collect video images in the digestive tract to form two image signals, including: two optical ball heads 1 symmetrically arranged at both ends, respectively arranged on the optical Two optical lenses 2, two lighting systems 3, two video image sensors 4, two main control systems 5, two image wireless sending devices 6, a rectifying device 7, a wireless energy receiving coil and Housing 8, wherein: optical lens 2 provides optical imaging distance for video image sensor 4, optical lens 2 provides illumination for video image sensor 4, main control system 5 is connected with video image sensor 4 and controls video image sensor 4, video image sensor 4 The obtained video image is output to the image wireless transmission device 6, and the image wireless transmission device 6 converts the video image into electromagnetic waves and transmits it to the outside of the body. The wireless energy receiving coil and the shell 8 receive the alternating magnetic field emitted by the external wireless energy supply device, and The alternating electromotive force is generated, and the alternating electromotive force is filtered and rectified by the rectifying device 7 to generate a DC power supply, which provides power for the image wireless transmitting device 6 , the main control system 5 , the video image sensor 4 and the lighting system 3 .

The external wireless energy supply device includes: an external wireless energy transmitting coil 10 and a power controller 9, wherein: the power control converts the DC power into a control signal and transmits it to the external wireless energy transmitting coil 10, and the external wireless energy transmitting coil 10 will Electric energy is converted into an alternating magnetic field.

The wireless energy receiving coil and the housing 8 described in this embodiment are cylindrical and have good waterproof performance, ensuring that the liquid in the digestive tract will not leak into the interior. The lighting system 3 provides lighting for the video image sensor 4 to ensure that the dual video imaging capsule endoscope 13 can take images in the digestive tract, the optical lens 2 provides a suitable optical imaging distance for the video image sensor 4, the optical lens 2, the lighting system 3 and the video The image sensor 4 is installed at the end of the dual-video imaging capsule endoscope 13, and the main control system 5 is connected to the video image sensor 4 through the data line. The main control system can realize the configuration and control of the video image sensor 4 through the data line, and realize the Adjustment of the imaging parameters of the video image sensor 4, the video output of the video image sensor 4 is directly transmitted to the image wireless transmission device 6, and the image wireless transmission device 6 can convert the video output image into electromagnetic waves of a certain frequency and transmit it outside the body. The wireless energy receiving coil and the housing 8 receive the alternating magnetic field emitted by the external wireless energy transmitting coil, and generate an alternating electromotive force inside the coil. The alternating electromotive force is filtered and rectified by the rectifying device 7 to generate a DC power supply, which is used for wireless image transmission. The device 6, the main control system 5, the video image sensor 4 and the lighting system 3 provide power. The optical lens 2 , the lighting system 3 , the video image sensor 4 , the main control system 5 , the image wireless transmitting device 6 , and the rectifying device 7 are installed in the wireless energy receiving coil and the housing 8 .

The external wireless energy supply device of this embodiment includes an external wireless energy transmitting coil 10 and a power controller 9 . The power control 9 converts the DC power into a control signal of a certain frequency and transmits it to the external wireless energy transmitting coil 10, and the external wireless energy transmitting coil 10 converts the electric energy into an alternating magnetic field of a certain frequency.

The dual-channel in vitro image processing device of this embodiment includes a dual-channel portable in vitro image real-time receiving module 11 and a computer workstation 12 . The dual-channel portable external image real-time receiving module can receive the image information transmitted wirelessly in the body in real time, and display them on the two display screens of the dual-channel portable external image real-time receiving module 11 respectively, and can also save them in the dual-channel portable external image real-time receiving module 11 respectively. In the storage device of the module 11, the dual-channel computer workstation 12 also has a real-time receiver of image information transmitted wirelessly in the body, which is displayed on the screen of the computer workstation, and can also be stored on the computer workstation. The dual-channel computer workstation 12 can also play back the data saved by the dual-channel portable external image real-time receiving module 11 . As shown in Figure 5, the dual-channel in vitro image real-time receiving module of this embodiment receives the image signals of different angles of the digestive tract wirelessly transmitted by the dual-video imaging capsule endoscope 13, specifically as follows: the antenna receives the signal sent by the dual-video imaging capsule endoscope 13 , the signal is frequency-selected, processed by tuner A and B, image collector A and B, and stored in memory A and B respectively, and can also be displayed on display screen A and B respectively.

The working principle of the system will be described in detail below in conjunction with the accompanying drawings. After the patient swallows the dual-video imaging capsule endoscope 13, the extracorporeal wireless energy supply device starts to work. The power controller 9 converts the DC power into an alternating signal of a certain frequency and transmits it to the extracorporeal wireless energy transmitting coil 10. The extracorporeal wireless energy transmitting coil 10 Converting electric energy into an alternating magnetic field of a certain frequency, the alternating magnetic field is received by the wireless energy receiving coil 8 in the dual-video imaging capsule endoscope 13 inside the body, and an alternating electromotive force is generated inside the coil, and the alternating electromotive force is received by the rectifying device 7 After filtering, rectification and voltage stabilization, it is converted into a DC power supply to supply energy to the lighting system 3 , video image sensor 4 , main control system 5 and image wireless transmitting device 6 . After the main control system 5 is powered on, the video image sensor 4 is configured and controlled, and after the configuration control is completed, the video image sensor 4 starts to work normally. When the lighting system 3 is powered on and starts to work, the front ends of the video image capsules at both ends are illuminated, and the front and rear images of the digestive tract wall are imaged on the video image sensor 4 through the optical lens 2, and the video image sensor 4 generates a video of the front and rear images of the digestive tract wall The video signal is directly transmitted to the image wireless transmitting device 6, and the image wireless transmitting device 6 converts the video image signal into an electromagnetic wave of a certain frequency and transmits it outside the body of the patient. The video image signal sent to the outside of the body is received by the dual-channel external image processing device, and there are two receiving methods: when using the dual-channel portable external image real-time receiving module 11, the dual-channel portable external image real-time receiving module 11 can respectively receive the received The video image signal is displayed on the display screen, and is stored separately on the storage device of itself; when using the dual-channel computer workstation 12, the dual-channel computer workstation 12 will receive the video image signal and display the video image signal in real time on the computer screen and simultaneously stored separately on the computer screen. The computer workstation 12 is also capable of reading and replaying the image signals stored by the dual-channel portable external image real-time receiving module 11 .

Claims (3)

1. A dual-video imaging capsule endoscope system based on wireless power supply, characterized in that it includes: dual-video imaging capsule endoscope, an external wireless energy supply device that provides energy for the dual-video imaging capsule endoscope, and a dual-channel external image A processing device, wherein: the dual-channel in vitro image processing device includes: a real-time receiving module and a computer workstation for mutual communication; The real-time receiving module includes: antenna, two high-frequency heads, two collectors, processor, two storages and two display screens, wherein: the antenna receives two image signals of the dual-video imaging capsule endoscope, And transmitted to two high-frequency heads respectively, after being amplified and mediated by the two high-frequency heads, they are transmitted to the processor through two collectors, and the processor converts them into two digital image signals corresponding to the image signal, and the digital image The signals are respectively stored in two storage devices, displayed on two display screens, or transmitted to a computer workstation. 2. The system according to claim 1, characterized in that, the two ends of the dual-video imaging capsule endoscope respectively collect video images in the digestive tract to form two image signals, comprising: two optical The ball head, two optical lenses respectively arranged inside the optical ball head, two lighting systems, two video image sensors, two main control systems, two image wireless sending devices, a rectifying device and a wireless energy receiving coil and The housing, wherein: the optical lens provides optical imaging distance for the video image sensor, the optical lens provides illumination for the video image sensor, the main control system is connected with the video image sensor and controls the video image sensor, and the video image obtained by the video image sensor is output to the image for wireless transmission On the device, the image wireless transmission device converts the video image into electromagnetic waves and transmits it to the outside of the body. The wireless energy receiving coil and the shell receive the alternating magnetic field emitted by the external wireless energy supply device and generate an alternating electromotive force. The alternating electromotive force passes through the rectification device Perform filtering and rectification to generate a DC power supply, which provides power for the image wireless transmission device, the main control system, the video image sensor and the lighting system. 3. The system according to claim 1 or 2, wherein the external wireless energy supply device includes: an external wireless energy transmitting coil and a power controller, wherein: the power control converts the DC power into a control signal and transmits To the external wireless energy transmitting coil, the external wireless energy transmitting coil converts electric energy into an alternating magnetic field.

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