WO2018110812A1 - Système et procédé utilisant un endoscope à capsule pour transmettre des données d'image - Google Patents

Système et procédé utilisant un endoscope à capsule pour transmettre des données d'image Download PDF

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Publication number
WO2018110812A1
WO2018110812A1 PCT/KR2017/010788 KR2017010788W WO2018110812A1 WO 2018110812 A1 WO2018110812 A1 WO 2018110812A1 KR 2017010788 W KR2017010788 W KR 2017010788W WO 2018110812 A1 WO2018110812 A1 WO 2018110812A1
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WO
WIPO (PCT)
Prior art keywords
capsule endoscope
medium
communication
transmission method
high frequency
Prior art date
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PCT/KR2017/010788
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English (en)
Korean (ko)
Inventor
송기석
Original Assignee
주식회사 헬스리안
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Application filed by 주식회사 헬스리안 filed Critical 주식회사 헬스리안
Publication of WO2018110812A1 publication Critical patent/WO2018110812A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor

Definitions

  • the present invention relates to an image data transmission system and method using a capsule endoscope, and more particularly, an image captured by a capsule endoscope using radio frequency (RF) communication and human body communication (HBC).
  • RF radio frequency
  • HBC human body communication
  • the capsule endoscope includes a pill-sized capsule including a photographing unit, an image processing unit, a wireless communication unit, and a power management unit, and transmits an image taken in the body to an external receiver wirelessly without intubating the wired endoscope. It is a device that can identify the digestive organs in the body, and since the use of images of the digestive organs in the body can be taken without anesthesia or discomfort, the use has recently increased.
  • Capsule endoscopes must be integrated with all devices, including batteries, in the size of a pill in order to be administered into the body without the discomfort of the patient.
  • wireless communication for transmitting image data should be able to transmit data at high speed with low power to the outside.
  • High frequency communication has the advantage of stable data communication, but there is a problem in that a lot of power consumption to be transmitted at a high speed.
  • Human medium communication has the advantage of being capable of fast data transmission at low power, but there was a problem that can be stable communication only when the electrode is in stable contact with the human body.
  • Patent Document 1 Korean Laid-Open Patent Publication No. 10-2012-0113545
  • the present invention has been made to solve the above-mentioned problems, and provided with a capsule endoscope and an external transmitter using both high frequency communication and human body communication, by detecting the stability of the medium communication in the external transmitter to communicate high frequency communication and human body communication Size of the capsule endoscope due to the additional integration of the antenna and the electrode, which can be a problem when using the high frequency and the human body communication together by combining the high frequency antenna and the human body communication electrode as an integrated type. It is to provide an image data transmission system and method using a capsule endoscope that can solve the problem of increase.
  • Image data transmission system using the capsule endoscope of the present invention for achieving the above object includes a capsule endoscope and an external transmitter that is wirelessly connected between the human body;
  • the external transmitter determines a wireless transmission method according to a human medium communication environment and transmits the capsule endoscope at a low speed;
  • the capsule endoscope selects high frequency wireless communication or human medium communication according to the received wireless transmission method, and transmits the captured image data to an external transmitter.
  • the image data transmission system using the capsule endoscope of the present invention detects the stability of the medium communication of the human body, and if it is determined that the communication of the body medium is stable to transmit a command signal to perform a wireless transmission through the body medium
  • An external transmitter for transmitting at a low speed with the capsule endoscope, or at a low speed with the capsule endoscope to transmit a command signal for performing wireless transmission through high frequency when it is determined that the human body communication is unstable;
  • a capsule endoscope that transmits an image photographed through high frequency to an external transmitter at high speed or an image photographed through a human medium at a high speed to an external transmitter according to a wireless transmission method received from the external transmitter.
  • the external transmitter includes an external antenna electrode attached to a human body to transmit / receive a radio signal; A medium receiving unit for determining stability of the medium communication through the medium communication signal received from the external antenna electrode or receiving an image transmitted through the medium from the capsule endoscope; A low speed transmission unit for transmitting the wireless transmission method outputted from the medium reception unit according to the stability determination at a low speed with a capsule endoscope; And a high frequency receiver configured to receive an image transmitted through a high frequency from the capsule endoscope.
  • Capsule endoscope includes an internal antenna electrode which is located inside the human body for transmitting and receiving wireless signals; A low speed receiver receiving a wireless transmission method at a low speed according to a stability determination transmitted from an external transmitter; If the wireless transmission method received by the low-speed receiving unit is a high frequency transmission method, a high frequency transmission unit for transmitting a high-speed image taken through the high frequency to an external transmitter; And if the wireless transmission method received by the low-speed receiving unit is a transmission method through the human body medium may comprise a medium transmission unit for transmitting a high-speed image taken through the human body medium to an external transmitter at high speed.
  • the internal antenna electrode may be formed in a specific pattern so that the body medium communication electrode has the performance of the high frequency communication antenna.
  • the high frequency transmission unit may be switched to a sleep state.
  • the image data transmission method using the capsule endoscope of the present invention for achieving the above object is that the wireless communication between the capsule endoscope and the external transmitter that is connected wirelessly between the human body, the external transmitter to the human body communication environment Therefore, determining the wireless transmission method and transmitting to the capsule endoscope at low speed; And selecting high frequency wireless communication or human medium communication according to the wireless transmission method in which the capsule endoscope is received, and transmitting the captured image data to an external transmitter.
  • the image data transmission method using the capsule endoscope of the present invention for achieving the above object is (a) by detecting the stability of the human medium communication in the external transmitter, if the human medium communication is determined that the wireless transmission through the human medium Method of transmitting a low-speed command signal to the capsule endoscope to transmit the command signal to be carried out at low speed with the capsule endoscope, or if the body medium communication in the external transmitter is unstable ; And (b) an image transmitting step of transmitting an image photographed through a high frequency to an external transmitter or an image photographed through a human medium to an external transmitter according to a wireless transmission method received through the method transmitting step in a capsule endoscope. It includes.
  • the medium receiving unit determines the stability of the medium communication through the medium communication signal received by the external antenna electrode, and the wireless transmission method outputted according to the stability determination from the medium receiving unit is a low-speed transmission from the capsule endoscope to the capsule endoscope Transmitting a message;
  • the low speed receiving unit receives a wireless transmission method at a low speed according to the stability determination transmitted from the external transmitter, and if the wireless transmission method received by the low speed receiving unit is a high frequency transmission method, the captured image is transmitted through the high frequency transmission unit.
  • the method may include transmitting at a high speed to an external transmitter, and transmitting the captured image at a high speed to the external transmitter through the medium transmitter if the wireless transmission method received by the low speed receiver is a transmission method through a human body.
  • the high frequency transmission unit may include a step of switching to a sleep state.
  • After the image transmission step may include receiving an image transmitted from the capsule endoscope through the human medium in the medium receiving unit or receiving an image transmitted through the high frequency from the capsule endoscope at the high frequency receiving unit.
  • the external transmitter detects the stability of the medium communication This enables efficient and stable selection of high frequency communication and human body communication.
  • the combination of high frequency antenna and human body communication electrode is integrated so that additional integration of antenna and electrode can be a problem when using high frequency communication with human body communication. There is an effect that can solve the problem of increasing the size of the capsule endoscope.
  • FIG. 1 is a block diagram showing an image data transmission system using a capsule endoscope according to an embodiment of the present invention
  • FIG. 2 is an exemplary view showing an antenna / electrode provided in the capsule endoscope according to an embodiment of the present invention
  • FIG. 3 is a block diagram illustrating a low speed transmission / reception unit of an image data transmission system using a capsule endoscope according to an embodiment of the present invention.
  • FIG. 4 is a graph showing a tendency of bit error rate according to a human body communication signal received in an image data transmission system using a capsule endoscope according to an embodiment of the present invention.
  • FIG. 5 is a block diagram illustrating a medium receiving unit forming an image data transmission system using a capsule endoscope according to an embodiment of the present invention.
  • 6 to 10 are exemplary views illustrating a process when a human medium communication is stable or unstable through an image data transmission system using a capsule endoscope according to an embodiment of the present invention.
  • FIG. 11 is a flowchart illustrating a method of transmitting image data using a capsule endoscope according to an embodiment of the present invention.
  • Image data transmission system using a capsule endoscope according to an embodiment of the present invention as shown in Figure 1, to communicate wirelessly between the human body (B), the capsule endoscope 100 located inside the human body (B) and It is configured to include an external transmitter 500 located outside the human body (B).
  • the capsule endoscope 100 is a capsule type pill size, and includes an image capturing unit 110, an image processing unit 120, an internal antenna electrode 130, a high frequency transmitter 140, a medium transmitter 150, and a low speed receiver 160. It is configured to include).
  • the image capturing unit 110 may be a micro camera, and the image processing unit 120 may be configured to perform image processing by a method known in the art.
  • the internal antenna electrode 130 is located inside the human body B to transmit / receive a wireless signal.
  • the human antenna communication electrode is formed in a specific pattern so as to have the performance of an antenna for high frequency communication. It is formed on the outer surface of the endoscope 100.
  • the internal antenna electrode 130 Since the internal antenna electrode 130 is implemented in a very small size, it must be able to simultaneously transmit the medium and the high frequency transmission of the human body, and in order to satisfy this, a specific pattern of electrodes capable of functioning as a spiral or concentric antenna may be used. It is formed on the outer surface of the capsule endoscope (100).
  • the shape and size of the electrode of a specific pattern may vary according to the frequency band used for high frequency communication.
  • the body medium communication electrode and the high frequency communication antenna integrally, the body medium transmission and the high frequency communication can be performed at the same time, the size of the capsule type endoscope 100 compared to forming the body medium communication electrode and the high frequency communication antenna separately Can be reduced.
  • the low speed receiver 160 receives the wireless transmission method at a low speed according to the stability determination transmitted from the external transmitter 500. Since the wireless transmission method does not have a large amount of data, the low speed receiver 160 transmits at a very low data rate. It can work as
  • the low speed receiver 160 includes a structure of a wireless receiver in the form of a known wake-up receiver including a low noise amplifier, a frequency lowering device, and a modulator. Can be reduced.
  • the high frequency transmitter 140 transmits the image captured by the image capturing unit 110 to the external transmitter 500 at high speed through high frequency when the wireless transmission method received by the low speed receiver 160 is a high frequency transmission method. If the wireless transmission method received by the low speed receiver 160 is a transmission method through the human body medium, the medium transmitter 150 may transmit the image captured by the image photographing unit 110 to the external transmitter 500 through the human body medium. To be sent.
  • the external transmitter 500 includes an external antenna electrode 510, a medium receiver 520, a low speed transmitter 530, a high frequency receiver 540, an image processor 550, and an image output unit 560. It is configured to include.
  • the external antenna electrode 510 is attached to the skin of the human body B and transmits / receives a wireless signal.
  • the external antenna electrode 510 may be formed in a specific pattern so that the human medium communication electrode has the performance of the high frequency communication antenna. Since it is located outside, it may be formed in a relatively larger size than the internal antenna electrode 130.
  • the external antenna electrode 510 should also be capable of transmitting the medium and the high frequency transmission at the same time, in order to satisfy this, the external antenna electrode 510 is formed of a specific pattern of electrodes capable of functioning as a spiral or concentric antenna. The size may vary depending on the frequency band of the high frequency communication to be used.
  • the body medium communication electrode and the high frequency communication antenna integrally, the body medium transmission and the high frequency communication antenna can be simultaneously performed, and the size of the external transmitter 500 is larger than that of the body medium communication electrode and the high frequency communication antenna. Can be reduced.
  • the medium receiving unit 520 determines the stability of the human medium communication through the human body communication signal received from the external antenna electrode 510, and selects a wireless transmission method according to the stability to determine the low speed receiving unit (530) through the low speed transmitting unit 530. 160).
  • bit error rate As shown in FIG. 4, with reference to a bit error rate (BER) according to the received body medium communication signal, the smaller the body medium communication signal is received, the better the body medium communication environment is, and more errors are generated. It can be seen that.
  • BER bit error rate
  • the slope or absolute value of the bit error rate may change according to the signal modulation method of the human medium communication, the noise characteristic of the transmitter / receiver, etc. However, the smaller the size of the received human medium communication signal is, the more the tendency of the bit error rate is constant.
  • the medium receiving unit 520 detects the stability of the human medium communication and selects a method of transmitting the medium of the human body when the magnitude of the received body medium communication signal is greater than a specific value, and selects a high frequency transmission method when the size of the human medium communication signal is smaller than the specific value, thereby transmitting the low speed transmitter 530.
  • the capsule-type low-speed receiver (160) To be transmitted to the capsule-type low-speed receiver (160).
  • the numerical value of power received in a wireless communication is called a received signal strength indication (RSSI), and the medium receiver 520 is a known medium including an amplifier, a filter, and a demodulator, as shown in FIG.
  • the receiving unit may further include a receiving signal strength meter and measure the strength of the received wireless signal by comparing the received signal strength with a specific level using the receiving signal strength meter. Size can determine the stability of the medium communication.
  • the sensitivity may be defined by the data modulation method, the data rate, the power consumption, and the required bit error rate in the media receiver 520.
  • the sensitivity may distinguish data 0 and 1 from the media receiver 520. May correspond to the minimum received signal strength.
  • the human body communication can be received. Therefore, when the received signal strength is smaller than the sensitivity, the human body communication is stable. Human media communication can be said to be unstable.
  • the medium receiving unit 520 receives an image transmitted through the human body B from the medium transmitting unit 150.
  • the low speed transmitter 530 transmits the wireless transmission method output from the medium receiver 520 to the capsule endoscope 100 at a low speed. As illustrated in FIG. 3, the low speed transmitter 530 transmits a modulator, a frequency riser, and a power amplifier. It includes the structure of a known wireless transmitter that includes.
  • the high frequency receiver 540 receives an image transmitted through the high frequency from the high frequency transmitter 140.
  • the image processor 550 may be configured to receive an image received through the medium receiver 520 or the high frequency receiver 540 and perform image processing by a method known in the art, and the image output unit 560. May be a display for outputting an image processed image on a screen.
  • the image data transmission system using the capsule endoscope configured as described above operates as follows.
  • the strength of the radio signal transmitted from the capsule endoscope 100 located inside the human body B is measured by the medium receiver 520 of the external transmitter 500 to detect stability of the human medium communication (S110). .
  • the human medium communication is determined to be stable through the human body communication signal received by the external antenna electrode 510.
  • the command signal for performing wireless transmission through the human body medium is transmitted to the low speed receiver 160 at a low speed (S130).
  • the medium transmitter 150 transmits the captured image to the medium receiver 520 at high speed through the human body medium (S140). .
  • the capsule endoscope 100 is in contact with the inside of the human body (B) through the human body communication signal received by the external antenna electrode 510, the human body medium communication is unstable If it is determined (S120), the command signal for performing the wireless transmission via the high frequency is transmitted to the low speed receiving unit 160 at low speed (S150).
  • the high frequency transmitter 140 transmits the captured image to the high frequency receiver 540 at high speed through high frequency (S160).
  • the medium transmitter 150 is turned on. Also, the captured image or a separate wireless signal is transmitted to the medium receiver 520.
  • the reason for this is that the photographed image data is stably transmitted through the high frequency transmitter 140, and at the same time, the stability of the body medium communication in the medium receiver 520 using a wireless signal transmitted through the medium transmitter 150. Is to measure.
  • the media receiver 520 and the high frequency receiver 540 properly filter the signal even at the same time. Can be separated.
  • the high frequency transmitter 140 while receiving image data through the high frequency transmitter 140, when the medium receiver 520 determines that the body medium communication is stable, the high frequency transmitter 140 is switched back to the sleep state, and the captured image is transferred to the medium transmitter ( It is possible to save power by being delivered through 150).
  • the capsule endoscope and the external transmitter using both high frequency communication and the human body communication detects the stability of the medium communication in the efficient and stable
  • the combination of the high frequency antenna and the human body communication electrode is integrated to solve the problem of increasing the size of the capsule endoscope due to the additional integration of the antenna and the electrode, which can be a problem when using the high frequency communication and the human body communication together. It can be effective.
  • the image data transmission system and method using the capsule endoscope according to the step S110 to step S160 according to the present invention can be programmed and stored in a recording medium such as a CD-ROM, memory, ROM, EEPROM so that the computer can read.
  • a recording medium such as a CD-ROM, memory, ROM, EEPROM so that the computer can read.
  • capsule endoscope 130 internal antenna electrode
  • the image taken in the body can be wirelessly transmitted to an external receiver, the internal digestive organs can be checked externally without the intubation of the wired endoscope. It can be used in the field of taking an image.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Medical Informatics (AREA)
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Abstract

La présente invention concerne un système et un procédé utilisant un endoscope à capsule pour transmettre des données d'image, le système et le procédé transmettant des images capturées au moyen de l'endoscope à capsule en utilisant une communication radiofréquence (RF) et une communication par le corps humain (HBC). Le système comprend un endoscope à capsule utilisant à la fois la communication RF et la communication par le corps humain, ainsi qu'un émetteur externe, la stabilité de la communication par le corps humain étant détectée par l'émetteur externe pour permettre une sélection efficace et stable d'une communication RF et d'une communication par le corps humain, et une antenne RF et des électrodes pour la communication par le corps humain sont intégrées dans un seul corps pour résoudre le problème de l'augmentation de la taille de l'endoscope à capsule qui peut être un problème du fait de l'addition d'une antenne et d'électrodes lorsque les communications RF et par le corps humain sont utilisées conjointement.
PCT/KR2017/010788 2016-12-15 2017-09-28 Système et procédé utilisant un endoscope à capsule pour transmettre des données d'image WO2018110812A1 (fr)

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KR1020160172015A KR101731597B1 (ko) 2016-12-15 2016-12-15 캡슐 내시경을 이용한 영상 데이터 전송 시스템 및 방법
KR10-2016-0172015 2016-12-15

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Cited By (1)

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CN110575119A (zh) * 2019-09-12 2019-12-17 安翰科技(武汉)股份有限公司 基于多射频模块的胶囊内窥镜的控制方法及控制系统

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US11298009B2 (en) 2018-05-03 2022-04-12 Electronics And Telecommunications Research Institute Electrode selection device for selecting optimal electrodes to communicate with capsule endoscope, and operation method thereof
KR102147974B1 (ko) * 2018-06-14 2020-08-25 지앨에스 주식회사 치과 의료용 무압축 영상 및 데이터 전송 시스템
CN109091097A (zh) * 2018-06-28 2018-12-28 安翰光电技术（武汉）有限公司 胶囊内窥镜
KR102207391B1 (ko) * 2018-11-20 2021-01-25 광운대학교 산학협력단 이중 통신 모드를 지원하는 캡슐 내시경을 위한 안테나-전극 일체형 구조체 및 이를 이용한 캡슐 내시경
KR102357307B1 (ko) * 2020-01-13 2022-02-03 주식회사 엔도핀 3d 초음파 영상 획득을 위한 캡슐 내시경 시스템
CN112100259A (zh) * 2020-09-08 2020-12-18 福建中信网安信息科技有限公司 一种基于等级保护综合管理平台的数据录入系统

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