JP2001231744A - Capsule endoscope - Google Patents

Capsule endoscope

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Publication number
JP2001231744A
JP2001231744A JP2000042518A JP2000042518A JP2001231744A JP 2001231744 A JP2001231744 A JP 2001231744A JP 2000042518 A JP2000042518 A JP 2000042518A JP 2000042518 A JP2000042518 A JP 2000042518A JP 2001231744 A JP2001231744 A JP 2001231744A
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Prior art keywords
capsule endoscope
capsule
antenna
transmission
sealed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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JP2000042518A
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Japanese (ja)
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JP4360730B2 (en )
Inventor
Masaru Eguchi
Masahiro Fushimi
Masaaki Nakajima
Tetsuya Nakamura
Taichi Nakanishi
Ichiro Ninomiya
Kenichi Ohara
雅章 中島
哲也 中村
太一 中西
一郎 二ノ宮
正寛 伏見
健一 大原
勝 江口
Original Assignee
Asahi Optical Co Ltd
旭光学工業株式会社
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/00002Operational features of endoscopes
    • A61B1/00011Operational features of endoscopes characterised by data transmission
    • A61B1/00016Operational features of endoscopes characterised by data transmission using wireless means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/04Instruments 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 combined with photographic or television appliances
    • A61B1/041Capsule endoscopes for imaging
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/00064Constructional details of the endoscope body
    • A61B1/0011Manufacturing of endoscope parts

Abstract

PROBLEM TO BE SOLVED: To provide a capsule endoscope which can assure safety to the human body and can maintain a good signal transmission state.
SOLUTION: This capsule endoscope has an illumination means which illuminates the inside of the living body, an imaging means which picks up the image of the part to be inspected illuminated by this illumination means, a modulated signal transmission means which modulates the output of this imaging means to a transmission signal and transmits this signal, a signal transmission antenna which sends the transmission signal outputted from the modulated signal transmission means and a shielding member which prevents the noise liable to be generated during the signal transmission by this signal transmission antenna within a hermetic capsule.
COPYRIGHT: (C)2001,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【技術分野】本発明は、体腔内を撮像し、その画像情報を体外に無線送信するカプセル内視鏡に関する。 TECHNICAL FIELD The present invention images a body cavity, relates to a capsule endoscope that wirelessly transmits the image information to the outside.

【0002】 [0002]

【従来技術およびその問題点】従来のファイバースコープや電子内視鏡装置は、人体外に配置した操作部や画像モニタ装置と、人体内に導入される撮像部とが可撓性管でつながれている構成となっている。 BACKGROUND OF THE INVENTION Conventional fiberscope or the electronic endoscope apparatus, an operation unit and an image monitor device disposed in the outside the human body, and an imaging unit that is introduced into the human body is connected by a flexible tube and it has a configuration you are. 被験者の苦痛を軽減するために撮像ヘッド部の小型化や細径化が図られても、「管」が被験者の喉を通る苦痛を根本的になくすことができない。 Be smaller and diameter of the imaging head portion is achieved to reduce the pain of the subject, "tube" can not be eliminated radically pain through the throat of the subject. そこで近年、管のないカプセル状の撮影部と、撮影部とは離隔された画像モニタ部を有するカプセル内視鏡装置が提案されている。 In recent years, a capsule-shaped imaging unit without the tube, the capsule endoscope apparatus having an image monitor unit spaced apart have been proposed to the imaging unit.

【0003】提案されているカプセル内視鏡装置は、体腔内を撮像するイメージセンサと、このイメージセンサが撮像した画像情報を送信信号に変調して送信する送信器と、送信アンテナとを備えたカプセル内視鏡を体内に導入し、体内のカプセル内視鏡が撮像した画像情報を無線によって体外の画像モニタ部へ送信するものである。 [0003] proposed a capsule endoscope apparatus, comprising an image sensor for imaging the body cavity, a transmitter this image sensor is transmitted by modulating the transmission signal to the image information captured, and a transmission antenna introducing a capsule endoscope into the body, the capsule endoscope in the body is intended to be transmitted to the image monitor unit outside the body by radio the image information captured.
ただし、送信信号を送信する送信アンテナは、送信時にノイズを発生させやすく、イメージセンサ等の電気部品から可及的に隔離するのが好ましいため、カプセル内部に設けられた前述の電気部品に対してカプセル外部に設けることが想定されているが、送信アンテナをカプセル外部に取りつけるには、送信アンテナが体内で脱落したり管腔を傷つけたりしないようにする加工が必要であり、この加工が容易ではなかった。 However, transmitting antenna for transmitting a transmission signal, a noise tends to occur during transmission, since it is preferable to isolate as much as possible from the electrical components such as an image sensor, the electric components described above provided inside the capsule it is envisioned that provided in the capsule outside the attachment of the transmitting antenna in the capsule outside, it is necessary machining transmitting antenna is prevented from damaging the lumen or fall off in the body, it is easy to this processing There was no. また、送信アンテナとして送信アンテナ線を使用した場合、送信アンテナ線の指向性により、カプセル内視鏡の向きによっては良好な情報送信状態を得られないことあった。 Also, when using the transmission antenna line as a transmission antenna, the directivity of the transmitting antenna wire, there can not be obtained a satisfactory information transmission condition by the orientation of the capsule endoscope.

【0004】 [0004]

【発明の目的】本発明は、人体への安全性を確保でき、 The present invention is an object of the invention, it is possible to ensure the safety of the human body,
良好な送信状態を保持可能なカプセル内視鏡を提供することを目的とする。 And to provide a capsule endoscope capable of retaining good transmission status.

【0005】 [0005]

【発明の概要】本発明は、生体内を照明する照明手段と;該照明手段によって照明された部分を撮像する撮像手段と、該撮像手段の出力を送信信号に変調して送信する変調送信手段と、該変調送信手段から出力される送信信号を送出する送信アンテナと、該送信アンテナによる送信時に発生するノイズを遮断するシールド部材とを密閉カプセル内に備えたことに特徴を有する。 SUMMARY OF THE INVENTION The present invention provides an illumination means and for illuminating the inside of a living body; an imaging means for imaging the illuminated portion by said illuminating means, modulation transmission means for transmitting by modulating the output of the image pickup means to the transmission signal When, characterized in that it comprises a transmitting antenna for transmitting a transmission signal output from the modulation transmission section, and a shield member in a sealed capsule for blocking noise when transmission by the transmitting antenna. この構成によれば、人体への安全性を確保できるカプセル内視鏡を提供することができる。 According to this configuration, it is possible to provide a capsule endoscope that can ensure the safety of the human body.

【0006】このカプセル内視鏡において、前記撮像手段は前記照明手段によって照明された被検部の像を形成する対物光学系と、該対物光学系によって形成された像を撮像するイメージセンサと、を有していることが好ましい。 [0006] In the capsule endoscope, an objective optical system the imaging means for forming an image of the object part illuminated by the illumination means, an image sensor that captures an image formed by the objective optical system, preferably it has a. また、前記シールド部材が円筒状をなして前記撮像手段及び前記変調送信手段等の各電気系部品を囲んで前記密閉カプセル内に収納されると、確実に各電気系部品をシールドできノイズを防止して良好な画像信号を生成できるので好ましい。 Also, prevention when said shield member is accommodated in said sealed capsule surrounding each electrical system parts such as the imaging means and the modulation transmission section a cylindrical shape, reliably noise can shield each electric system parts It preferred because it produces good image signals. また、前記送信アンテナはフレキシブル基板上にアンテナ配線されたアンテナ基板であって、このアンテナ基板が円筒上をなして前記シールド部材を囲んで前記密閉カプセル内に収納されるとカプセル内視鏡の向きによらず良好な送信状態を保持することが可能となるので好ましく、また、スペース効率良く収納できるという利点もある。 Also, the transmitting antenna is an antenna substrate which is an antenna wiring on a flexible substrate, the direction of the the antenna substrate is housed in the sealed capsule surrounds the shield member forms a top cylindrical capsule endoscope since it is possible to maintain good transmission state regardless of some preferred, also the advantage that the space can be efficiently accommodated. 例えば、前記送信アンテナ配線を、前記フレキシブル基板上に、前記密閉カプセル内に収納状態とされたときに前記密閉カプセルの周回方向または前記対物光学系の光軸に沿った方向に往復を繰り返す形状で設けるとより効果的である。 For example, the transmitting antenna wiring, on the flexible substrate in the form of repeating the reciprocating in the circumferential direction or a direction along the optical axis of the objective optical system of the sealed capsule when it is a housed state in said sealed capsule provided when it is more effective. さらに、前記シールド部材は、前記アンテナ基板のアンテナ配線された面の裏面に一様に設けられ、このアンテナ基板はそのシールド面を内面とする円筒状をなして前記密閉カプセル内に収納されると、より好ましい。 Further, the shield member, the antenna substrate uniformly provided on the back surface of the antenna wired surface of this antenna substrate is accommodated in the sealed capsule a cylindrical shape to an inner surface thereof face shield , more preferable. なお、送信アンテナは、密閉カプセル内の一端部に設ける構成とすることもできる。 The transmission antenna can also be configured to provide at one end of the sealed capsule.

【0007】 [0007]

【発明の実施の形態】以下、図示実施形態に基づいて、 DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, based on the illustrated embodiments,
本発明を説明する。 The present invention will be described. 本発明を適用したカプセル内視鏡1 Capsule endoscope 1 according to the present invention
0は、測定観察時に被験者の体内に導入されて体腔内の様子を撮像し、その画像情報を体外の受信装置に無線送信するものである。 0 is introduced into the body of the subject by imaging the state of the body cavity at the time of measurement observations, it is to wirelessly transmit the image information to the receiving apparatus outside the body. カプセル内視鏡10は、図1に示すように、その前方(図1の左方)から順に、対物光学系20、イメージセンサ111等を設けたイメージセンサ部110、信号処理部120、電池101、変調・送信アンプ部130を有し、周面には、送信アンテナ部14 The capsule endoscope 10, as shown in FIG. 1, in order from the front (left in FIG. 1), the objective optical system 20, image sensor unit 110 provided with the image sensor 111 or the like, the signal processing unit 120, a battery 101 has a modulation and transmission amplifier section 130, the peripheral surface, transmitting antenna section 14
0が設けられ、これら全体が水密性の密閉カプセル50 0 is provided, sealed capsules 50 overall these watertightness
内に収納されている。 It is housed within. このため、送信アンテナ部140 Therefore, the transmission antenna unit 140
が体内で脱落したり、管腔を傷つけたりするおそれがなく、人体への安全性を確保することができる。 There or drop off in the body, there is no risk of damaging the lumen, it is possible to ensure the safety of the human body. なお、密閉カプセル50は、前端部および後端部が丸みを帯びた(球面形状の)全体として滑らかな外観の円筒形に形成され、前部に半球状の透明カバー50aが透明材料で形成されている。 Incidentally, sealed capsules 50 are formed in the cylindrical front end and rear end is rounded (spherical shape) as a whole smooth appearance, hemispherical transparent cover 50a is formed with a transparent material to the front ing.

【0008】カプセル内視鏡10は透明カバー50aを通して観察される被検部を対物光学系20、イメージセンサ111を介して撮像する。 [0008] Capsule endoscope 10 is the objective optical system 20 to the object part to be observed through the transparent cover 50a, to image through the image sensor 111. イメージセンサ111で光電変換され蓄積された電荷(蓄積信号)は、信号処理部120で画像信号に変換され、変調・送信アンプ部1 Photoelectrically converted charges accumulated (accumulation signal) in the image sensor 111, the signal processing unit 120 is converted into an image signal, modulating and transmitting amplifier unit 1
30で変調・増幅されて送信信号となり、送信アンテナ部140から体外に向けて電波として放射される。 Modulated and amplified at 30 to become a transmission signal is emitted as a radio wave toward the body from the transmission antenna unit 140. 送信アンテナ部140には、信号処理部120等の各電気系部品に信号送信時のノイズの影響を与えないよう、シールド部材143が設けられている(図4参照)。 The transmitting antenna unit 140, so as not to affect the noise during signal transmission to the respective electrical system parts such as the signal processing unit 120, the shield member 143 is provided (see FIG. 4).

【0009】上述のイメージセンサ部110、信号処理部120、変調・送信アンプ部130、送信アンテナ部140は、図2から図4の展開図に示すように、回路基板100上に一体に形成されている。 [0009] The foregoing image sensor unit 110, signal processing unit 120, modulation and transmission amplifier section 130, transmitting antenna 140, as shown in the exploded view of FIGS. 2-4, are formed integrally on the circuit board 100 ing. 回路基板100 Circuit board 100
は、3枚の円形回路基板(イメージセンサ部110、信号処理部120、変調・送信アンプ部130)と一枚の長方形状をしたフレキシブル基板(送信アンテナ部14 The three circular circuit board (image sensor unit 110, signal processing unit 120, modulation and transmission amplifier section 130) a flexible substrate (transmitting antenna unit 14 as a piece of rectangular
0)を連結した形状となっている。 0) and it has a shape connecting. イメージセンサ部1 Image sensor unit 1
10、信号処理部120、変調・送信アンプ部130の夫々は、帯状の接続ストリップ基板150で接続され、 10, the signal processing unit 120, Each of the modulating and sending amplifier unit 130, are connected by strip-shaped connecting strip substrate 150,
この裏面に配線された導電部材で結線されている。 It is connected by a conductive member that is wired to the back surface. なお、本実施形態の回路基板100は一枚の回路基板から形成してあるが、各回路基板を連結して形成することもできる。 The circuit board 100 of the present embodiment although is formed from a single circuit board may be formed by connecting the respective circuit board.

【0010】イメージセンサ部110の円形回路基板には、イメージセンサ窓112が形成され、基板を挟んで表面にイメージセンサ111が固定され(図3)、裏面に赤外カットフィルター113が固定されている(図4)。 [0010] a circular circuit board of the image sensor unit 110, the image sensor window 112 is formed, the image sensor 111 to the surface across the substrate is fixed (FIG. 3), an infrared cut filter 113 is fixed to the back surface It is (Figure 4). またイメージセンサ部110には、詳細には図示していないが、生体内を照明する照明手段として発光ダイオード、発光ダイオードの発光制御,イメージセンサ111の走査制御等を行なうイメージセンサ制御用電気部品も設けられている。 The image sensor unit 110 is not shown in detail, the light emitting diodes as lighting means for illuminating the inside of a living body, the light emission control of the light emitting diode, Image sensor control electric components for performing scan control of the image sensor 111 It is provided. 発光ダイオードによって照明された被検部の像が対物光学系20により赤外カットフィルター113を透過してイメージセンサ111上に形成される。 Image of the object part illuminated by the light emitting diode is formed on the image sensor 111 passes through the infrared cut filter 113 by the objective optical system 20. 信号処理部120の円形回路基板には、基板を挟んで表面にイメージセンサ111の出力信号を処理する信号処理電気部品121が固定され(図3)、裏面に電池101用の電気接点123が設けられている(図4)。 The circular circuit board of the signal processing unit 120, the signal processing the electrical component 121 is fixed (Fig. 3) for processing the output signal of the image sensor 111 to the surface across the substrate, electrical contacts 123 of the battery 101 is provided on the back surface It is (Figure 4). この信号処理部120では、イメージセンサ部1 In the signal processing unit 120, the image sensor unit 1
10から出力された蓄積信号をA/D変換処理・ビデオ処理等して画像信号とし、変調・送信アンプ部130に出力する。 The accumulated signal output from the 10 to the image signal in such A / D conversion processing and video processing, and outputs the modulation-transmission amplifier unit 130. 変調・送信アンプ部130の円形回路基板には、基板を挟んで表面に信号処理部120の出力を変調して送信するための変調・送信電気部品131が固定され(図3)、裏面に電池101用の電気接点133が設けられている(図4)。 A circular circuit board modulation and transmission amplifier 130, modulating and sending electrical component 131 for transmitting and modulating the output of the signal processing unit 120 to the surface across the substrate is fixed (FIG. 3), the battery on the back surface electrical contact 133 is provided for 101 (FIG. 4). 信号処理部120から出力された画像信号は、変調・送信アンプ部130で変調・増幅されて送信信号となり送信アンテナ部140に出力され、送信アンテナ部140から電波として放射される。 Image signal output from the signal processing unit 120 is output to the transmit antenna unit 140 becomes a transmission signal is modulated and amplified by the modulating and sending amplifier unit 130, is radiated as a radio wave from the transmitting antenna unit 140.

【0011】送信アンテナ部140のフレキシブル基板には、その基板表面に送信アンテナ配線141を設けた送信アンテナ面142が形成され(図3)、裏面にはノイズを防止するシールド部材143を一様に施したシールド面144が形成されている(図4)。 [0011] The flexible substrate of the transmitting antenna 140, transmitting antenna surface 142 in which a transmit antenna wiring 141 on the substrate surface is formed (FIG. 3), uniformly shield member 143 to prevent noise on the back shield surface 144 which has been subjected is formed (FIG. 4). なお、送信アンテナ配線141は、1本のアンテナ線が図3において左右方向に往復する形状で設けられている。 The transmission antenna wire 141, one antenna lines are provided in the form of reciprocating in the horizontal direction in FIG. 3.

【0012】回路基板100は、図5に示すように、回路基板100のイメージセンサ部110、信号処理部1 [0012] circuit board 100, as shown in FIG. 5, the image sensor unit 110 of the circuit board 100, the signal processing unit 1
20、変調・送信アンプ部130の夫々が平行になるようにストリップ基板150との接続部で折り曲げ、電気接点123、133に接するように電池101を組み込む。 20, bent at the connection portion of the strip substrate 150 as each is parallel modulation and transmission amplifier unit 130 incorporates a battery 101 in contact with the electrical contacts 123 and 133. そして、図1に示すように、この略円柱状の外周にシールド面144を内側にして送信アンテナ部140を巻きつけて密閉カプセル50内に収納するので、シールド部材143によって信号送信時のノイズから信号処理部120等の各電気系部品を守り、良好な画像信号を生成することができる。 Then, as shown in FIG. 1, since the housing the shield surface 144 to the substantially cylindrical outer circumference wound to the transmitting antenna section 140 inwardly sealed capsule 50, the noise during signal transmission by the shield member 143 protect the electrical system components of the signal processing section 120 or the like, it is possible to produce a good image signal. この収納状態では、送信アンテナ配線141はカプセル内視鏡10の全周面から送信信号を放射するので、体腔内におけるカプセル内視鏡10の向きによらず、良好な送信状態を保つことができる。 In this housed state, the transmitting antenna wire 141 so radiates a transmission signal from the entire peripheral surface of the capsule endoscope 10, regardless of the orientation of the capsule endoscope 10 in the body cavity, it is possible to maintain good transmission status .

【0013】図8にはカプセル内視鏡10に設けたリードスイッチ102の概要を示してある。 [0013] Figure 8 is shown an overview of the reed switch 102 provided in the capsule endoscope 10. このリードスイッチ102は磁気の有無に応じてオン・オフするスイッチである。 The reed switch 102 is a switch for turning on and off depending on the presence or absence of the magnetic. 本実施形態では、カプセル内視鏡10の周囲に磁気がないとき、リードスイッチ102がオンして電池101からカプセル内視鏡10へ電力供給する構成となっている。 In the present embodiment, when there is no magnetism around the capsule endoscope 10, and has a power supply configured to capsule endoscope 10 from the battery 101 reed switch 102 is turned on. なお、不使用時には、カプセル内視鏡10 Note that when not in use, the capsule endoscope 10
は永久磁石を内蔵した磁気シールド容器内に保管される。 Are stored in the magnetic shield container with a built-in permanent magnets.

【0014】以上の構成に基づいてカプセル内視鏡10 [0014] The above capsule endoscope based on the configuration 10
の使用の概略について図1を参照して説明する。 Referring to FIG. 1 will be outlined in the use of. 先ず、 First of all,
被験者の体から磁気を帯びたものをすべて取り除き、被験者にカプセル内視鏡10を嚥下させる。 Remove all those magnetized from the subject's body, and ingested the capsule endoscope 10 to the subject. 被験者の体腔内では、リードスイッチ102がオンして電池101からカプセル内視鏡10へ電力が供給され、測定観察が開始される。 In the body cavity of a subject, power is supplied to the capsule endoscope 10 from the battery 101 reed switch 102 is turned on, the measurement observation is started. 体腔内ではカプセル内視鏡10に押しのけられた管腔の一部が密閉カプセル50の透明カバー50a Transparent cover 50a of a portion of the lumen which is displaced in the capsule endoscope 10 in the body cavity is sealed capsules 50
に密着する。 In close contact with. この密着した部分および透明カバー50a The contact portion and the transparent cover 50a
の前方に位置する部分は、イメージセンサ部110に設けられた不図示の発光ダイオードによって照明される。 A portion located in front of the illuminated by unillustrated light-emitting diodes provided on the image sensor unit 110.
この照明された部分(被検部)の像は、対物光学系20 The image of the illuminated portion (object part) the objective optical system 20
によってイメージセンサ111上に形成され、イメージセンサ111で光電変換されて蓄積される。 By being formed on the image sensor 111 and accumulated by photoelectric conversion by the image sensor 111. イメージセンサ111から出力された蓄積信号は信号処理部120 Stored signal the signal processing unit output from the image sensor 111 120
で画像信号に変換され、この画像信号が変調・送信アンプ部130で変調・増幅されて送信信号となり、送信アンテナ132から体外に送信される。 In is converted into an image signal, the image signal is modulated and amplified by the modulating and sending amplifier section 130 to become a transmission signal is transmitted from the transmission antenna 132 to the outside. そして、この送信信号が体外の受信装置により受信され、モニタ装置に映し出されて観察される。 Then, the transmission signal is received by the receiving device outside the body, it is observed is displayed on the monitor device.

【0015】以上のように、本実施形態では、送信アンテナ部140を密閉カプセル50内部に収納したので、 [0015] As described above, since in the present embodiment, housing the transmitting antenna unit 140 inside the sealed capsule 50,
送信アンテナ部140が体内で脱落したり、管腔を傷つけたりするおそれがなく、人体への安全性を確保することができる。 Or transmitting antenna portion 140 falls off in the body, there is no risk of damaging the lumen, it is possible to ensure the safety of the human body. また、本実施形態では、送信アンテナ部1 Further, in this embodiment, the transmission antenna unit 1
40をフレキシブル基板上に設け、その基板表面に送信アンテナ配線141を設けた送信アンテナ面142を、 It provided 40 on a flexible substrate, a transmission antenna surface 142 in which a transmit antenna wiring 141 on the substrate surface,
その基板裏面にはノイズを防止するシールド部材143 Shielding member 143 for preventing noise Its rear surface of the substrate
が一様に施されたシールド面144を形成し、そして送信アンテナ部140を、シールド面144を内面とする円筒状として、略円柱状に組み立てたイメージセンサ部110,信号処理部120,変調・送信部130の外周に巻きつけて密閉カプセル50内に収納するので、シールド部材143によって信号送信時のノイズから各電気系部品を守り、良好な画像信号を生成することができるほか、スペース効率良く密閉カプセル50内に収納できるという利点がある。 Forms a shield surface 144 that has been subjected to uniform and the transmission antenna unit 140, the face shield 144 as a cylinder shape with an inner surface, an image sensor unit 110 assembled in a substantially cylindrical shape, the signal processing unit 120, modulation and since housed in the sealed capsule 50 by winding the outer periphery of the transmission portion 130, it protects the electrical system components from the noise during signal transmission by the shield member 143, in addition to be able to produce good image signal, good space efficiency there is an advantage that can be stored in a sealed capsule 50. さらに、本実施形態では、送信アンテナ部140を密閉カプセル50内に収納状態としたとき、送信アンテナ配線141はカプセル内視鏡10の全周面(側面)から送信信号を放射するので、体腔内におけるカプセル内視鏡10の向きによらず、良好な送信状態を保つことができる。 Furthermore, in the present embodiment, when the storage state the transmitting antenna unit 140 in a sealed capsule 50, since the transmission antenna wire 141 emits a transmission signal from the entire peripheral surface of the capsule endoscope 10 (the side surface), the body cavity regardless of the orientation of the capsule endoscope 10 in the can maintain good transmission status.

【0016】なお、本実施形態では、送信アンテナ配線141とシールド部材143をフレキシブル基板の表面と裏面に形成したが、これに限定されず、種々の変形が可能である。 [0016] In the present embodiment, the transmitting antenna wire 141 and the shield member 143 formed on the surface and the back surface of the flexible substrate is not limited thereto, and various modifications are possible. 例えば、図6及び図7に示すように、長方形状のフレキシブル基板に送信アンテナ配線141を設けず、シールド部材143を一面または両面に施す一方、変調・送信アンプ部130の変調・送信電気部品1 For example, as shown in FIGS. 6 and 7, without providing the transmit antenna wire 141 in a rectangular shape of the flexible substrate, while applying a shielding member 143 one side or both sides, modulating and sending electrical component 1 modulation and transmission amplifier 130
31が固定された面に送信アンテナ線145を設けて、 31 is provided with a transmitting antenna line 145 in a fixed plane,
密閉カプセル50の後方から体外に向けて信号送信する構成とすることも可能である。 It is also possible to from the rear of sealed capsules 50 configured to transmit a signal toward the outside.

【0017】 [0017]

【発明の効果】本発明は、カプセル内に送信アンテナを収納したので、体内でカプセル内視鏡から送信アンテナが脱落する、突出した送信アンテナが管腔を傷つけるなどのおそれがなく、安全性の高いカプセル内視鏡を提供できる。 According to the present invention, since the housed transmitting antenna in the capsule, the transmission antenna from falling off from the capsule endoscope in the body, protruding transmit antennas without a risk of damaging the lumen of the safety It can provide high capsule endoscope. しかも、シールド部材で撮像手段及び変調送信手段を囲ったため、ノイズの影響を受けず良好な画像信号を生成できる。 Moreover, since the enclosed image pickup means and the modulation transmission section in the shielding member can generate a good image signal without being affected by noise. さらに、送信アンテナをフレキシブル基板上にアンテナ配線したアンテナ基板とし、このアンテナ基板のアンテナ配線された面の裏面にシールド部材を一様に施したシールド面を設ければ、カプセルを大きくすることなく送信アンテナを内蔵でき、またカプセル内視鏡の向きによらず常に良好な送信状態を保つことができる。 Further, the transmitting antenna and the antenna substrate having an antenna wiring on the flexible substrate, by providing a shield surface uniformly subjected to a shield member on the back surface of the antenna wired surface of the antenna substrate, transmission without increasing the capsule it can be incorporated an antenna, also can be kept always good transmission state regardless of the orientation of the capsule endoscope.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】 本発明を適用したカプセル内視鏡の一実施形態を示す図であり、(A)はカプセル内視鏡の側断面図を、(B)はI−I面での断面図を示している。 Figure 1 is a view showing an embodiment of the present invention the applied capsule endoscope, a side sectional view of (A) is a capsule endoscope, the cross-sectional view at (B) is I-I plane shows.

【図2】 同カプセル内視鏡が備えた回路基板の展開図である。 Figure 2 is an exploded view of a circuit board the capsule endoscope equipped.

【図3】 図2におけるII矢視図である。 A II arrow view in FIG. 3 FIG.

【図4】 図2におけるIII矢視図である。 A III arrow view in FIG. 4 FIG.

【図5】 各略円形回路基板を組み立てた回路基板の側断面図である。 5 is a side sectional view of a circuit board assembly each substantially circular circuit board.

【図6】 本発明を適用したカプセル内視鏡の別実施形態の一例を示す図である。 6 is a diagram showing an example of another embodiment of the present invention has been applied capsule endoscope.

【図7】 図6に示す別実施形態において各略円形回路基板を組み立てた回路基板の側断面図である。 7 is a side sectional view of a circuit board assembly each substantially circular circuit board in another embodiment shown in FIG.

【図8】 同カプセル内視鏡に設けたリードスイッチの概要を説明する図である。 8 is a diagram for describing the outline of the reed switch provided in the capsule endoscope.

【符号の説明】 DESCRIPTION OF SYMBOLS

10 カプセル内視鏡 20 対物光学系 50 密閉カプセル 100 回路基板 101 電池 102 リードスイッチ 110 イメージセンサ部 111 イメージセンサ 113 赤外カットフィルター 120 信号処理部 121 信号処理電気部品 123 133 電気接点 130 変調・送信アンプ部 131 変調・送信電気部品 140 送信アンテナ部 141 送信アンテナ配線 142 送信アンテナ面 143 シールド部材 144 シールド面 150 接続ストリップ基板 10 Capsule endoscope 20 objective optical system 50, sealed capsules 100 circuit board 101 battery 102 reed switch 110 image sensor unit 111 image sensor 113 an infrared cut filter 120 the signal processor 121 signal processing electrical components 123 133 electrical contact 130 modulating and transmitting amplifier part 131 modulating and sending electrical parts 140 connecting the transmitting antenna unit 141 transmitting antenna wire 142 transmitting antenna surface 143 shield member 144 face shield 150 strip substrate

───────────────────────────────────────────────────── フロントページの続き (72)発明者 二ノ宮 一郎 東京都板橋区前野町2丁目36番9号 旭光 学工業株式会社内 (72)発明者 中村 哲也 東京都板橋区前野町2丁目36番9号 旭光 学工業株式会社内 (72)発明者 伏見 正寛 東京都板橋区前野町2丁目36番9号 旭光 学工業株式会社内 (72)発明者 江口 勝 東京都板橋区前野町2丁目36番9号 旭光 学工業株式会社内 (72)発明者 大原 健一 東京都板橋区前野町2丁目36番9号 旭光 学工業株式会社内 Fターム(参考) 2H040 BA00 GA00 GA02 4C061 AA01 BB02 CC06 DD01 JJ06 JJ11 JJ13 JJ15 JJ19 LL02 NN03 UU06 ────────────────────────────────────────────────── ─── of the front page continued (72) inventor Ichiro Ninomiya Itabashi-ku, Tokyo cortex-cho 2-chome No. 36 No. 9 rays of the rising sun chemical industry Co., Ltd. in the (72) inventor Tetsuya Nakamura Itabashi-ku, Tokyo cortex-cho 2-chome 36 No. 9 No. rays of the rising sun chemical industry Co., Ltd. in the (72) inventor Masahiro Fushimi Itabashi-ku, Tokyo cortex-cho 2-chome No. 36 No. 9 rays of the rising sun chemical industry Co., Ltd. in the (72) inventor Masaru Eguchi Itabashi-ku, Tokyo cortex-cho 2-chome 36 No. 9 No. rays of the rising sun chemical industry Co., Ltd. in the (72) inventor Kenichi Ohara Itabashi-ku, Tokyo cortex-cho 2-chome No. 36 No. 9 rays of the rising sun chemical industry Co., Ltd. in the F-term (reference) 2H040 BA00 GA00 GA02 4C061 AA01 BB02 CC06 DD01 JJ06 JJ11 JJ13 JJ15 JJ19 LL02 NN03 UU06

Claims (7)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 生体内を照明する照明手段と、 該照明手段によって照明された部分を撮像する撮像手段と、 該撮像手段の出力を送信信号に変調して送信する変調送信手段と、 該変調送信手段から出力される送信信号を送出する送信アンテナと、 該送信アンテナによる送信時に発生するノイズを遮断するシールド部材と、を密閉カプセル内に備えたことを特徴とするカプセル内視鏡。 Illuminating means for illuminating the claim 1] in vivo, an imaging unit for imaging the illuminated portion by said illuminating means, a modulation transmission section that transmits by modulating the output of the image pickup means to the transmission signal, modulation capsule endoscope, wherein a transmitting antenna for transmitting the transmission signal outputted from the transmitting unit, and a shield member for blocking the noise generated at the time of transmission by said transmitting antenna, further comprising the sealed inside a capsule.
  2. 【請求項2】 請求項1記載のカプセル内視鏡において、前記撮像手段は、前記照明手段によって照明された被検部の像を形成する対物光学系と、該対物光学系によって形成された像を撮像するイメージセンサとを有しているカプセル内視鏡。 2. The method of claim 1 capsule endoscope, wherein the imaging means includes an objective optical system for forming an image of the object part illuminated by the illuminating means, the image formed by the objective optical system capsule endoscope and an image sensor for capturing a.
  3. 【請求項3】 請求項1または2記載のカプセル内視鏡において、前記シールド部材は円筒状をなして前記撮像手段及び前記変調送信手段を囲み、前記密閉カプセル内に収納されているカプセル内視鏡。 3. An apparatus according to claim 1 or 2 capsule endoscope, wherein the shield member is a cylindrical shape surrounding the image pickup means and the modulation transmission section, the capsule endoscope housed in the sealed capsule mirror.
  4. 【請求項4】 請求項3記載のカプセル内視鏡において、前記送信アンテナはフレキシブル基板上にアンテナ配線されたアンテナ基板であって、該アンテナ基板は円筒状をなして前記シールド部材を囲み、前記密閉カプセル内に収納されているカプセル内視鏡。 4. The method of claim 3 capsule endoscope, wherein the transmitting antenna is an antenna substrate which is an antenna wiring on a flexible substrate, the antenna substrate surrounds the shield member forms a cylindrical shape, the the capsule endoscope accommodated in the sealed capsule.
  5. 【請求項5】 請求項4記載のカプセル内視鏡において、前記シールド部材は、前記アンテナ基板のアンテナ配線された面の裏面に一様に設けられ、該アンテナ基板は該シールド面を内面とする円筒状をなして前記密閉カプセル内に収納されているカプセル内視鏡。 5. A method according to claim 4 capsule endoscope, wherein the shield member is uniformly provided on the back surface of the antenna wired surface of the antenna substrate, the antenna substrate and the inner surface of the shield surface capsule endoscope a cylindrical shape is housed in the sealed capsule.
  6. 【請求項6】 請求項4または5記載のカプセル内視鏡において、前記送信アンテナ配線は、前記フレキシブル基板上に、前記密閉カプセル内に収納状態とされたときに前記密閉カプセルの周回方向または前記対物光学系の光軸に沿った方向に往復を繰り返す形状で設けられているカプセル内視鏡。 6. The method according to claim 4 or 5 capsule endoscope, wherein said transmitting antenna wiring on the flexible substrate, the closed circumferential direction or the capsule when it is a housed state in said sealed capsule the capsule endoscope provided in the form of repeating the reciprocating in a direction along the optical axis of the objective optical system.
  7. 【請求項7】 請求項1から3いずれか一項に記載のカプセル内視鏡において、前記送信アンテナは前記密閉カプセル内の一端部に設けられているカプセル内視鏡。 7. The capsule endoscope according to claim 1, 3 any one, the transmitting antenna is a capsule endoscope that is provided at one end in said sealed capsules.
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