JP2012130555A - Endoscope, endoscope system, and auxiliary lighting fixture - Google Patents

Endoscope, endoscope system, and auxiliary lighting fixture Download PDF

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JP2012130555A
JP2012130555A JP2010286096A JP2010286096A JP2012130555A JP 2012130555 A JP2012130555 A JP 2012130555A JP 2010286096 A JP2010286096 A JP 2010286096A JP 2010286096 A JP2010286096 A JP 2010286096A JP 2012130555 A JP2012130555 A JP 2012130555A
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movement
treatment instrument
auxiliary
endoscope
illumination
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Makito Komukai
牧人 小向
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Fujifilm Corp
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Abstract

PROBLEM TO BE SOLVED: To safely use an auxiliary lighting fixture when illuminating the inside of a subject with the auxiliary lighting fixture inserted in a forceps channel with simple configuration.SOLUTION: A distal end 16a connected to the tip of an insertion part of an endoscope includes an imaging optical system 26 and a forceps outlet 28. The forceps channel 32 is connected to the forceps outlet 28. The auxiliary lighting fixture 11 is inserted in the forceps channel 32. The auxiliary lighting fixture 11 includes an LED light source 42 and first and second magnetic bodies 44, 45. A movement preventing magnetic body 51 and a movement preventing electromagnet 52 are provided near the forceps channel 32. When the movement preventing electromagnet 52 is switched to an energized state from a non-energized state, the first and second magnetic bodies 44, 45 are attracted to the movement preventing magnetic body 51 and the movement preventing electromagnet 52, and the auxiliary lighting fixture 11 inclines in a direction that an optical axis L1 of an illuminating aperture 43 intersects an optical axis L2 of the imaging optical system 26 on the object side.

Description

本発明は、処置具挿通チャンネルに補助照明具を挿入して被検体内の被観察部位に照明光を照射する内視鏡及びこれを備えた内視鏡システム並びに補助照明具に関する。   The present invention relates to an endoscope that inserts an auxiliary illuminator into a treatment instrument insertion channel to irradiate an observation site in a subject with illumination light, an endoscope system including the endoscope, and an auxiliary illuminator.

内視鏡は、被検体内に挿入される挿入部の先端部に、被検体の像光を取り込むための観察光学系と、被検体に照明光を照射するための照明光学系とを備えている。照明光学系による照明光の照射角及び光軸方向は、観察光学系による観察範囲に合わせるように設定されている。   An endoscope includes an observation optical system for capturing image light of a subject and an illumination optical system for irradiating the subject with illumination light at a distal end portion of an insertion portion to be inserted into the subject. Yes. The irradiation angle and optical axis direction of the illumination light by the illumination optical system are set so as to match the observation range by the observation optical system.

従来の内視鏡では、照明光学系による照明光の照射角、光軸方向は固定されていたが、特許文献1記載の内視鏡では、光源装置から供給される光を導くライトガイドの出射端と、照明光学系の最先端側に位置する照明窓との間に、対向面が軸線方向に対して傾いた一対の透明部材を軸方向に沿って間隔可変に配置しており、これら一対の透明部材の間隔を変化させることにより、照明光の光軸の向きが変わるようにしている。   In the conventional endoscope, the illumination angle of the illumination light by the illumination optical system and the optical axis direction are fixed. However, in the endoscope described in Patent Document 1, the light guide that guides the light supplied from the light source device is emitted. Between the end and the illumination window located on the most distal side of the illumination optical system, a pair of transparent members whose opposing surfaces are inclined with respect to the axial direction are arranged in a variable manner along the axial direction. By changing the interval between the transparent members, the direction of the optical axis of the illumination light is changed.

また、特許文献2では、照明光学系を構成する照明レンズの1つを光軸方向に沿って移動させるアクチュエータを備えており、アクチュエータを駆動させて照明レンズを光軸方向に沿って移動させることにより照明光の配光特性、すなわち高い照度を照射する照射角を変化させる構成が記載されている。   In Patent Document 2, an actuator that moves one of the illumination lenses constituting the illumination optical system along the optical axis direction is provided, and the actuator is driven to move the illumination lens along the optical axis direction. Describes a configuration for changing the light distribution characteristic of illumination light, that is, the irradiation angle at which high illuminance is applied.

特開2006−334043号公報JP 2006-334043 A 特開平10−239740号公報Japanese Patent Laid-Open No. 10-239740

内視鏡では、被検体の表面に対して挿入部先端面が数ミリメートル程度まで近接する場合でも、鮮明な観察像が得られることが求められている。しかしながら、観察光学系と照明光学系とは同軸には設けられていないため、内視鏡の挿入部先端面を被検体の表面に近づけるにつれて、観察光学系による観察範囲、及び照明光学系による照明範囲がともに狭くなり、互いに重ならなくなる。よって、観察範囲には照明光が届かなくなり鮮明な観察像を得ることが困難になる。   Endoscopes are required to obtain a clear observation image even when the distal end surface of the insertion portion is close to several millimeters with respect to the surface of the subject. However, since the observation optical system and the illumination optical system are not provided coaxially, the observation range by the observation optical system and the illumination by the illumination optical system are increased as the distal end surface of the insertion portion of the endoscope is brought closer to the surface of the subject. Both ranges become narrower and do not overlap each other. Therefore, the illumination light does not reach the observation range, and it becomes difficult to obtain a clear observation image.

上記特許文献1及び2記載の内視鏡では、内視鏡の挿入部先端を被検体の表面に近接させたとき、観察範囲の変化に合わせて照明光の照射角や、光軸方向を変えることで対応することが考えられるが、一対の透明部材の間隔を可変させる機構、あるいは、照明レンズの1つを光軸方向に移動させる機構などが複雑であり、内視鏡のコスト増加の原因となる。   In the endoscopes described in Patent Documents 1 and 2, when the distal end of the insertion portion of the endoscope is brought close to the surface of the subject, the illumination angle of the illumination light and the optical axis direction are changed according to the change in the observation range. However, the mechanism for changing the distance between the pair of transparent members or the mechanism for moving one of the illumination lenses in the direction of the optical axis is complicated, which causes an increase in the cost of the endoscope. It becomes.

そこで、出願人は、内視鏡の挿入部先端を被検体の表面に近接させて観察像が暗くなった場合、補助的な照明光を照射する補助照明具を、内視鏡の鉗子チャンネルに挿入して使用することを検討している。ところが、内視鏡の鉗子チャンネルは、処置具の挿入を妨げないように内面が平滑に形成されていることが一般的であり、鉗子チャンネルに補助照明具を挿入した場合、鉗子チャンネルには引っ掛かるものがないため、補助照明具が内視鏡の挿入部先端面から突出してしまう。これにより、挿入部先端面から突出した補助照明具が被検体に当たったり、挿入部先端面に対する補助照明具の位置が定まらず、光量が変化したりするなどの不具合が生じる。   In view of this, the applicant applies an auxiliary illuminating device that emits auxiliary illumination light to the forceps channel of the endoscope when the observation image becomes dark due to the distal end of the insertion portion of the endoscope being brought close to the surface of the subject. I am considering inserting and using it. However, the forceps channel of an endoscope is generally formed with a smooth inner surface so as not to prevent the insertion of the treatment tool. When an auxiliary illumination tool is inserted into the forceps channel, the forceps channel is caught by the forceps channel. Since there is nothing, the auxiliary lighting device protrudes from the distal end surface of the insertion portion of the endoscope. As a result, problems such as the auxiliary illumination tool protruding from the distal end surface of the insertion portion hitting the subject, the position of the auxiliary illumination tool relative to the distal end surface of the insertion portion cannot be determined, and the amount of light changes.

本発明は、上記課題を鑑みてなされたものであり、簡便な構成で、且つ鉗子チャンネル内に挿入した補助照明具で被検体内を照明するとき、安全に使用することが可能な内視鏡、内視鏡システム、及び補助照明具を提供することを目的とする。   The present invention has been made in view of the above problems, and is an endoscope that has a simple configuration and can be used safely when the inside of a subject is illuminated with an auxiliary illumination tool inserted into a forceps channel. It is an object to provide an endoscope system and an auxiliary lighting device.

本発明の内視鏡は、被検体内に挿入される挿入部と、前記挿入部の先端に配され、被検体の像光を取り込むための観察光学系と、前記挿入部内に配された処置具挿通チャンネルと、前記先端に配され、前記処置具挿通チャンネルに接続される処置具出口とが設けられ、前記処置具挿通チャンネルに、先端部に設けられた照明光学系を通して照明光を照射する補助照明具が挿入される内視鏡において、前記処置具挿通チャンネル内の所定位置に前記補助照明具を引き付ける磁力を発生し、前記処置具挿通チャンネルの軸方向における前記補助照明具の移動を阻止する移動阻止手段を備えたことを特徴とする。   An endoscope according to the present invention includes an insertion portion that is inserted into a subject, an observation optical system that is disposed at a distal end of the insertion portion and captures image light of the subject, and a treatment that is disposed within the insertion portion. An instrument insertion channel and a treatment instrument outlet disposed at the distal end and connected to the treatment instrument insertion channel are provided, and the treatment instrument insertion channel is irradiated with illumination light through an illumination optical system provided at the distal end portion. In an endoscope in which an auxiliary illumination tool is inserted, a magnetic force that attracts the auxiliary illumination tool to a predetermined position in the treatment instrument insertion channel is generated, and movement of the auxiliary illumination tool in the axial direction of the treatment instrument insertion channel is prevented. It is characterized by comprising movement preventing means.

前記移動阻止手段は、前記処置具挿通チャンネルの付近に複数設けられ、前記処置具挿通チャンネルの軸方向において互いに異なる位置から前記補助照明具を引き付ける磁力をそれぞれ発生することが好ましい。   It is preferable that a plurality of the movement preventing means are provided in the vicinity of the treatment instrument insertion channel, and generate magnetic forces that attract the auxiliary illumination tool from different positions in the axial direction of the treatment instrument insertion channel.

前記移動阻止手段は、前記補助照明具に設けられた磁性体を引き付ける移動阻止用磁性体からなることが好ましい。あるいは、前記移動阻止手段は、磁力を発生しない非通電状態と、磁力を発生して前記補助照明具に設けられた磁性体を引き付ける通電状態との間で切り替えが行われる移動阻止用電磁石からなることが好ましい。   It is preferable that the movement blocking means is made of a movement blocking magnetic body that attracts a magnetic body provided in the auxiliary lighting device. Alternatively, the movement blocking means includes a movement blocking electromagnet that is switched between a non-energized state that does not generate magnetic force and an energized state that generates magnetic force and attracts the magnetic body provided in the auxiliary lighting device. It is preferable.

前記移動阻止手段は、前記処置具挿通チャンネルの周方向において互いに反対側の位置に配され、発生する磁力が前記補助照明具をそれぞれ引き付けることにより、前記照明光学系の光軸が、前記観察光学系の光軸と物体側で交差することが好ましい。   The movement preventing means is arranged at positions opposite to each other in the circumferential direction of the treatment instrument insertion channel, and the generated magnetic force attracts the auxiliary illuminator, so that the optical axis of the illumination optical system becomes the observation optical It is preferable to cross the optical axis of the system on the object side.

前記移動阻止手段は、前記補助照明具に設けられた第1の磁性体を引き付ける移動阻止用磁性体と、磁力を発生しない非通電状態と、磁力を発生して前記補助照明具に設けられた第2の磁性体を引き付ける通電状態との間で切り替えが行われる移動阻止用電磁石とからなり、前記移動阻止用磁性体及び前記移動阻止用電磁石を前記処置具挿通チャンネルの周方向において互いに反対側の位置に配し、前記移動阻止用電磁石が非通電状態のとき、
前記移動阻止用磁性体から発生する磁力が前記補助照明具を引き付けることにより、前記照明光学系の光軸が前記観察光学系の光軸と平行に配され、前記移動阻止用電磁石が非通電状態から通電状態に切り替わるとき、前記移動阻止用磁性体及び前記移動阻止用電磁石から発生する磁力が前記補助照明具をそれぞれ引き付けることにより、前記照明光学系の光軸が、前記観察光学系の光軸と物体側で交差することが好ましい。
The movement preventing means is provided in the auxiliary illuminator that generates a magnetic force for preventing movement, a non-energized state that does not generate magnetic force, and attracts the first magnetic body provided in the auxiliary illuminator. A movement-preventing electromagnet that is switched between an energized state that attracts the second magnetic body, and the movement-preventing magnetic body and the movement-preventing electromagnet are opposite to each other in the circumferential direction of the treatment instrument insertion channel. When the electromagnet for blocking movement is in a non-energized state,
The magnetic force generated from the movement preventing magnetic body attracts the auxiliary illuminator, so that the optical axis of the illumination optical system is arranged in parallel with the optical axis of the observation optical system, and the electromagnet for movement prevention is in a non-energized state. When switching from the current state to the energized state, the magnetic force generated by the movement-preventing magnetic body and the movement-preventing electromagnet attracts the auxiliary illuminator, so that the optical axis of the illumination optical system becomes the optical axis of the observation optical system. And the object side.

前記移動阻止手段は、前記処置具挿通チャンネルの内部に突出しない位置に配されていることが好ましい。   It is preferable that the movement preventing means is arranged at a position that does not protrude into the treatment instrument insertion channel.

本発明の内視鏡システムは、前記内視鏡と、前記補助照明具とを備えることを特徴とする。   The endoscope system according to the present invention includes the endoscope and the auxiliary lighting device.

本発明の補助照明具は、被検体内に挿入される挿入部、前記挿入部の先端に配され、被検体の像光を取り込むための観察光学系、前記挿入部内に配された処置具挿通チャンネル、及び前記先端に配され、前記処置具挿通チャンネルに接続される処置具出口を備える内視鏡の前記処置具挿通チャンネルに挿入される補助照明具において、前記処置具挿通チャンネルに挿入される筐体と、前記筐体の先端部に設けられ、被検体内に照明光を照射するための照明光学系と、前記内視鏡に設けられた移動阻止手段が発生する磁力により前記処置具挿通チャンネル内の所定位置に引き付けられて前記処置具挿通チャンネルの軸方向における移動が阻止される磁性体とを備えることを特徴とする。   The auxiliary illuminating device of the present invention includes an insertion portion that is inserted into a subject, an observation optical system that is disposed at a distal end of the insertion portion and captures image light of the subject, and a treatment instrument that is disposed within the insertion portion. An auxiliary illuminator inserted into the treatment instrument insertion channel of an endoscope having a channel and a treatment instrument outlet disposed at the distal end and connected to the treatment instrument insertion channel, is inserted into the treatment instrument insertion channel The treatment instrument is inserted by a magnetic force generated by a housing, an illumination optical system for irradiating illumination light into the subject, and a movement blocking means provided in the endoscope. And a magnetic body that is attracted to a predetermined position in the channel and prevents movement of the treatment instrument insertion channel in the axial direction.

前記磁性体は、前記筐体の外周面付近に複数設けられ、前記筐体の軸方向において互いに異なる位置に設けられていることが好ましい。   It is preferable that a plurality of the magnetic bodies are provided in the vicinity of the outer peripheral surface of the casing and are provided at different positions in the axial direction of the casing.

本発明によれば、処置具挿通チャンネル内の所定位置に補助照明具を引き付ける磁力を発生する移動阻止手段によって、処置具挿通チャンネルの軸方向における補助照明具の移動を阻止しているので、内視鏡を簡便な構成とし、且つ鉗子チャンネル内に挿入した補助照明具で被検体内を照明するとき、安全に使用することができる。   According to the present invention, the movement of the auxiliary illuminator in the axial direction of the treatment instrument insertion channel is prevented by the movement preventing means that generates a magnetic force that attracts the auxiliary illuminator to a predetermined position in the treatment instrument insertion channel. When the endoscope has a simple configuration and the inside of the subject is illuminated with an auxiliary illumination tool inserted into the forceps channel, the endoscope can be used safely.

内視鏡システムの外観斜視図である。It is an external appearance perspective view of an endoscope system. 電子内視鏡の先端部の構成を示す斜視図である。It is a perspective view which shows the structure of the front-end | tip part of an electronic endoscope. 図2のA−a線に沿った断面図である。It is sectional drawing along the Aa line of FIG. 補助照明具の構成を示す斜視図である。It is a perspective view which shows the structure of an auxiliary lighting fixture. 鉗子チャンネルに補助照明具を挿入した状態(A)及び補助照明具が所定位置に引き付けられた状態(B)を示す説明図である。It is explanatory drawing which shows the state (A) which inserted the auxiliary lighting tool in the forceps channel, and the state (B) where the auxiliary lighting tool was attracted | sucked to the predetermined position. 挿入部先端を被検体に近接させた状態(A)及び電磁石を通電状態として補助照明具を傾けた状態(B)を示す説明図である。It is explanatory drawing which shows the state (B) in which the auxiliary | assistant illumination tool was inclined by making the insertion part front-end | tip close | similar to a subject (A), and making an electromagnet into an energized state.

図1に示すように、内視鏡システム2は、電子内視鏡10、補助照明具11、プロセッサ装置12、光源装置13、送気・送水装置14、電源制御装置15などから構成されている。送気・送水装置14は、光源装置13に内蔵され、エアーの送気を行う周知の送気装置(ポンプなど)14aと、光源装置13の外部に設けられ、洗浄水を貯留する洗浄水タンク14bから構成されている。電子内視鏡10は、被検体内に挿入される挿入部16と、挿入部16の基端部分に連設された操作部17と、プロセッサ装置12及び光源装置13に接続されるコネクタ18と、操作部17とコネクタ18との間を繋ぐユニバーサルコード19とを有する。   As shown in FIG. 1, the endoscope system 2 includes an electronic endoscope 10, an auxiliary illumination tool 11, a processor device 12, a light source device 13, an air / water supply device 14, a power supply control device 15, and the like. . The air / water supply device 14 is built in the light source device 13 and is a well-known air supply device (pump or the like) 14a for supplying air, and a washing water tank that is provided outside the light source device 13 and stores washing water. 14b. The electronic endoscope 10 includes an insertion portion 16 to be inserted into a subject, an operation portion 17 connected to a proximal end portion of the insertion portion 16, and a connector 18 connected to the processor device 12 and the light source device 13. And a universal cord 19 that connects between the operation unit 17 and the connector 18.

挿入部16は、その先端に設けられ、被検体内撮影用の撮像素子としてのCCD型イメージセンサ(図3参照。以下、CCDという)36等が内蔵された先端部16aと、先端部16aの基端に連設された湾曲自在な湾曲部16bと、湾曲部16bの基端に連設された可撓性を有する可撓管部16cとからなる。   The insertion portion 16 is provided at the distal end thereof, and includes a distal end portion 16a having a built-in CCD type image sensor (see FIG. 3, hereinafter referred to as a CCD) 36 as an imaging element for imaging within the subject, and the distal end portion 16a. It comprises a bendable bending portion 16b provided continuously at the base end, and a flexible flexible tube portion 16c provided continuously at the base end of the bending portion 16b.

コネクタ18は複合タイプのコネクタであり、プロセッサ装置12、及び光源装置13、送気・送水装置14がそれぞれ接続されている。操作部17には、湾曲部16bを上下左右に湾曲させるためのアングルノブ21や、後述する送気・送水用ノズル29(図2参照)からエアー、水を噴出させるための送気・送水ボタン22といった操作部材が設けられている。また、操作部17には、鉗子チャンネル32(処置具挿通チャンネル)に電気メス等の処置具、及び補助照明具11を挿入するための鉗子口23が設けられている。   The connector 18 is a composite type connector to which the processor device 12, the light source device 13, and the air / water supply device 14 are connected. The operation unit 17 has an air supply / water supply button for ejecting air and water from an angle knob 21 for bending the bending portion 16b vertically and horizontally, and an air supply / water supply nozzle 29 (see FIG. 2) described later. An operation member 22 is provided. Further, the operation unit 17 is provided with a forceps port 23 for inserting a treatment tool such as an electric knife and the auxiliary illumination tool 11 into a forceps channel 32 (treatment tool insertion channel).

プロセッサ装置12は、光源装置13と電気的に接続され、内視鏡システム2の動作を統括的に制御する。プロセッサ装置12は、ユニバーサルコード19や挿入部16内に挿通された伝送ケーブルを介して電子内視鏡10に給電を行い、CCD36の駆動を制御する。また、プロセッサ装置12は、伝送ケーブルを介してCCD36から出力された撮像信号を取得し、各種画像処理を施して画像データを生成する。プロセッサ装置12で生成された画像データは、プロセッサ装置12にケーブル接続されたモニタ20に観察画像として表示される。   The processor device 12 is electrically connected to the light source device 13 and comprehensively controls the operation of the endoscope system 2. The processor device 12 supplies power to the electronic endoscope 10 via the universal cord 19 and a transmission cable inserted into the insertion portion 16 and controls the drive of the CCD 36. In addition, the processor device 12 acquires an imaging signal output from the CCD 36 via a transmission cable, and performs various image processing to generate image data. The image data generated by the processor device 12 is displayed as an observation image on the monitor 20 connected to the processor device 12 by a cable.

図2及び図3に示すように、先端部16aは、先端硬性部24と、この先端硬性部24の先端側に装着される先端保護キャップ25と、撮像光学系26(観察光学系)と、照明窓27a,27bと、鉗子出口28(処置具出口)と、送気・送水用ノズル29とを備える。先端硬性部24は、ステンレス鋼等の金属からなり、長手方向に沿って複数の貫通孔が形成されている。この先端硬性部24の各貫通孔に撮像部30、ライトガイド(図示せず)、鉗子チャンネル32などの各種部品が嵌合して固定されている。先端硬性部24の後端は、湾曲部16bを構成する先端の湾曲駒33に連結されている。また、先端硬性部24の外周には、外皮チューブ34が被覆される。   As shown in FIGS. 2 and 3, the distal end portion 16a includes a distal end rigid portion 24, a distal end protective cap 25 attached to the distal end side of the distal end rigid portion 24, an imaging optical system 26 (observation optical system), Illumination windows 27a and 27b, a forceps outlet 28 (treatment tool outlet), and an air / water supply nozzle 29 are provided. The distal end hard portion 24 is made of a metal such as stainless steel, and a plurality of through holes are formed along the longitudinal direction. Various parts such as an imaging unit 30, a light guide (not shown), and a forceps channel 32 are fitted and fixed in each through hole of the distal end rigid portion 24. The rear end of the distal end rigid portion 24 is connected to the distal bending piece 33 constituting the bending portion 16b. In addition, the outer tube 34 is covered on the outer periphery of the distal end rigid portion 24.

先端保護キャップ25は、ゴムまたは樹脂等からなり、挿入部16の軸方向と略直交する面であり、挿入部16の先端面を構成する平坦面25aが形成されている。先端保護キャップ25には、撮像光学系26、照明窓27a,27b、及び送気・送水用ノズル29を露呈させる貫通孔25b〜25e、及び鉗子出口28が形成されている。一対の照明窓27a,27bは、撮像光学系26を挟んで対称な位置に配されている。   The tip protection cap 25 is made of rubber, resin, or the like, is a surface that is substantially orthogonal to the axial direction of the insertion portion 16, and is formed with a flat surface 25 a that constitutes the tip surface of the insertion portion 16. The tip protection cap 25 is formed with through holes 25 b to 25 e that expose the imaging optical system 26, illumination windows 27 a and 27 b, and the air / water supply nozzle 29, and a forceps outlet 28. The pair of illumination windows 27a and 27b are arranged at symmetrical positions with the imaging optical system 26 in between.

図3に示すように、撮像部30は、撮像光学系26(観察光学系)と、撮像光学系26を保持する鏡筒35、CCD36などからなる。鏡筒35は、先端部16aの中心軸に撮像光学系26の光軸が平行となるように先端硬性部24に取り付けられる。撮像光学系26は、レンズ群及びプリズムから構成され、レンズ群のうち、最も先端側に位置するレンズ26Aが先端部16aの先端面、すなわち先端保護キャップ25の貫通孔25bから露呈する。撮像光学系26の出射端側には、CCD36が配設されており、撮像光学系26で取り込まれた観察範囲の像光は、CCD36の受光面(図示せず)に結像されて撮像信号に変換される。CCD36から出力された撮像信号は、信号ケーブル37を介してプロセッサ装置12へ伝送される。   As shown in FIG. 3, the imaging unit 30 includes an imaging optical system 26 (observation optical system), a lens barrel 35 that holds the imaging optical system 26, a CCD 36, and the like. The lens barrel 35 is attached to the distal end rigid portion 24 so that the optical axis of the imaging optical system 26 is parallel to the central axis of the distal end portion 16a. The imaging optical system 26 includes a lens group and a prism. Among the lens group, the lens 26A located at the most distal end side is exposed from the distal end surface of the distal end portion 16a, that is, the through hole 25b of the distal end protection cap 25. A CCD 36 is disposed on the exit end side of the image pickup optical system 26, and the image light in the observation range captured by the image pickup optical system 26 is imaged on a light receiving surface (not shown) of the CCD 36 and picked up an image pickup signal. Is converted to The imaging signal output from the CCD 36 is transmitted to the processor device 12 via the signal cable 37.

照明窓27a,27bは、照射レンズを兼ねており、被検体内の被観察部位に光源装置13からの照明光を照射する。照明窓27a,27bは、ライトガイド(図示せず)の出射端が面している。ライトガイドは、多数の光ファイバー(例えば、石英からなる)を束ねて形成されたものである。このライトガイドは、挿入部16、操作部17、ユニバーサルコード19、及びコネクタ18の内部を通っており、被検体内の被観察部位に光源装置13からの照明光を照明窓27a,27bに導く。   The illumination windows 27a and 27b also serve as irradiation lenses, and irradiate illumination light from the light source device 13 to an observation site in the subject. The illumination windows 27a and 27b face the light emission end of a light guide (not shown). The light guide is formed by bundling a large number of optical fibers (for example, made of quartz). The light guide passes through the insertion portion 16, the operation portion 17, the universal cord 19, and the connector 18, and guides the illumination light from the light source device 13 to the observation windows in the subject to the illumination windows 27a and 27b. .

鉗子出口28は、挿入部16内に配設された鉗子チャンネル32に接続され、操作部17の鉗子口23に連通している。鉗子チャンネル32には、鉗子口23を通して補助照明具11が挿入される。鉗子チャンネル32に挿入された補助照明具11は、鉗子出口28から先端面が露呈される。   The forceps outlet 28 is connected to a forceps channel 32 disposed in the insertion portion 16 and communicates with the forceps port 23 of the operation portion 17. The auxiliary lighting device 11 is inserted into the forceps channel 32 through the forceps port 23. The auxiliary lighting device 11 inserted into the forceps channel 32 is exposed at the distal end surface from the forceps outlet 28.

図3及び図4に示すように、補助照明具11は、鉗子チャンネル32の内径よりも小さい外径の略円筒形状に形成された筐体41と、筐体41に内蔵されるLED光源42と、筐体41の先端に取り付けられる照明光学系としての照明窓43と、筐体41に取り付けられた第1及び第2の磁性体44,45と、LED光源42に電力を供給する電源ケーブル46、電源ケーブル46の基端側に設けられた電源コネクタ47(図1参照)とを備える。電源ケーブル46は、筐体41を鉗子チャンネル32の先端側へ送り込めるように、筐体41を押圧可能とする程度の剛性を有する。電源コネクタ47は、電源制御装置15に接続される。   As shown in FIGS. 3 and 4, the auxiliary illumination tool 11 includes a housing 41 formed in a substantially cylindrical shape having an outer diameter smaller than the inner diameter of the forceps channel 32, and an LED light source 42 built in the housing 41. The illumination window 43 as an illumination optical system attached to the tip of the housing 41, the first and second magnetic bodies 44 and 45 attached to the housing 41, and the power cable 46 for supplying power to the LED light source 42 And a power connector 47 (see FIG. 1) provided on the base end side of the power cable 46. The power cable 46 is rigid enough to allow the housing 41 to be pressed so that the housing 41 can be fed to the distal end side of the forceps channel 32. The power connector 47 is connected to the power control device 15.

LED光源42は、例えば三色のLEDチップを用いて1つの発光源として白色光を得るものや、蛍光体をLED光により励起発光させて白色光を形成するものなど、白色光を照射するLED光源であればよい。照明窓43は、LED光源42の先端側を覆っている。LED光源42から供給される照明光(白色光)は、照明窓43を通って先端側へ照射される。また、照明窓43は、平凸レンズであり、LED光源からの照明光を拡散して被検体に照射する。この照明窓43から照射される照明光の照射角は、電子内視鏡10の照明窓27a,27bからの照明光による照射角よりも広いことが好ましい。   The LED light source 42 is an LED that emits white light, such as one that obtains white light as one light source using three-color LED chips, or one that forms white light by exciting phosphors with LED light. Any light source may be used. The illumination window 43 covers the tip side of the LED light source 42. The illumination light (white light) supplied from the LED light source 42 is irradiated to the tip side through the illumination window 43. The illumination window 43 is a plano-convex lens, and diffuses illumination light from the LED light source to irradiate the subject. The illumination angle of illumination light emitted from the illumination window 43 is preferably wider than the illumination angle of illumination light from the illumination windows 27a and 27b of the electronic endoscope 10.

また、LED光源42は、電源ケーブル46、電源コネクタ47を介して電源制御装置15から電力が供給されることにより照明光を照射する。図示は省略するが、電源制御装置15は操作ユニットに接続されている。操作ユニットは、LED光源42のオン/オフを切り替えるためのボタンなどを備える。電源制御装置15は、操作ユニットの操作に従って電力供給を制御する。   The LED light source 42 emits illumination light when power is supplied from the power supply control device 15 via the power cable 46 and the power connector 47. Although not shown, the power supply control device 15 is connected to the operation unit. The operation unit includes a button for switching on / off the LED light source 42. The power supply control device 15 controls power supply according to the operation of the operation unit.

第1の磁性体44は、フェライト磁石やネオジム磁石などの永久磁石であり、略円筒形状に形成されている。この第1の磁性体44は、筐体41の基端部に設けられ、補助照明具11が鉗子チャンネル32に挿入されたとき、後述する移動阻止用磁性体51が発生する磁力により引き付けられる。また、第1の磁性体44は、筐体41の外周面41aと同軸、且つ外周面41aから突出しない位置に配されている。本実施形態では、第1の磁性体44は、筐体41の外周面41aと同じ外径に形成され、外周面41aと連続するように配設されている。なお、これに限らず、第1の磁性体44は、移動阻止用磁性体51からの磁力により引き付けられる位置に配設すればよく、例えば筐体41の内部に配置してもよい。   The first magnetic body 44 is a permanent magnet such as a ferrite magnet or a neodymium magnet, and is formed in a substantially cylindrical shape. The first magnetic body 44 is provided at the base end portion of the housing 41 and is attracted by a magnetic force generated by a movement preventing magnetic body 51 described later when the auxiliary lighting device 11 is inserted into the forceps channel 32. The first magnetic body 44 is arranged at a position that is coaxial with the outer peripheral surface 41a of the housing 41 and does not protrude from the outer peripheral surface 41a. In the present embodiment, the first magnetic body 44 is formed to have the same outer diameter as the outer peripheral surface 41a of the housing 41, and is disposed so as to be continuous with the outer peripheral surface 41a. The first magnetic body 44 is not limited to this, and may be disposed at a position attracted by the magnetic force from the movement preventing magnetic body 51. For example, the first magnetic body 44 may be disposed inside the housing 41.

第2の磁性体45は、第1の磁性体44と同様の永久磁石であり、略円筒形状に形成されている。この第2の磁性体45は、筐体41の先端部に設けられ、補助照明具11が鉗子チャンネル32に挿入されたとき、後述する移動阻止用電磁石52から発生する磁力によって引き付けられる。なお、第2の磁性体45は、第1の磁性体44と同様に、筐体41と同軸、且つ外周面41aから突出しない位置に配されている。第1の磁性体44及び第2の磁性体45は、互いの極性が逆になっており、例えば、第1の磁性体44は外周面側がN極で内周面側がS極であるのに対して、第2の磁性体45は外周面側がS極で内周面側がN極である。   The second magnetic body 45 is a permanent magnet similar to the first magnetic body 44, and is formed in a substantially cylindrical shape. The second magnetic body 45 is provided at the distal end portion of the housing 41 and is attracted by a magnetic force generated from a movement preventing electromagnet 52 described later when the auxiliary lighting device 11 is inserted into the forceps channel 32. In addition, the 2nd magnetic body 45 is distribute | arranged to the position which is coaxial with the housing | casing 41 and does not protrude from the outer peripheral surface 41a similarly to the 1st magnetic body 44. FIG. The first magnetic body 44 and the second magnetic body 45 have opposite polarities. For example, the first magnetic body 44 has an N pole on the outer peripheral surface side and an S pole on the inner peripheral surface side. On the other hand, the second magnetic body 45 has an S pole on the outer peripheral surface side and an N pole on the inner peripheral surface side.

電子内視鏡10には、移動阻止手段としての移動阻止用磁性体51及び移動阻止用電磁石52が設けられている。移動阻止用磁性体51は、鉗子チャンネル32の周方向において撮像光学系26から最も遠い位置、且つ鉗子チャンネル32の軸方向において平坦面25aから補助照明具11の筐体41の長さと略同じ間隔を置く位置に設けられている。なお、移動阻止用磁性体51としては、磁性体44,45と同様に永久磁石を用いる。移動阻止用磁性体51及び移動阻止用電磁石52は、鉗子チャンネル32の内部に突出しない位置、本実施形態では、鉗子チャンネル32の外周面に沿って配置されている。これにより、処置具を鉗子チャンネル32に挿通させて使用するとき、処置具の動きを妨げることがない。   The electronic endoscope 10 is provided with a movement blocking magnetic body 51 and a movement blocking electromagnet 52 as movement blocking means. The movement-preventing magnetic body 51 is located farthest from the imaging optical system 26 in the circumferential direction of the forceps channel 32, and is approximately the same distance as the length of the casing 41 of the auxiliary illumination tool 11 from the flat surface 25a in the axial direction of the forceps channel 32. It is provided in the position to put. As the movement preventing magnetic body 51, a permanent magnet is used in the same manner as the magnetic bodies 44 and 45. The movement-preventing magnetic body 51 and the movement-preventing electromagnet 52 are arranged along the outer peripheral surface of the forceps channel 32 in a position that does not protrude into the forceps channel 32 in this embodiment. Accordingly, when the treatment tool is inserted through the forceps channel 32 and used, the movement of the treatment tool is not hindered.

移動阻止用磁性体51は、第1の磁性体44を引き付ける磁力を発生するように極性が設定されており、例えば、第1の磁性体44は外周面側がN極で内周面側がS極であるのに対して、移動阻止用磁性体51は内周面側(第1の磁性体44と対面する側)がS極で外周面側がN極である。   The polarity of the movement preventing magnetic body 51 is set so as to generate a magnetic force that attracts the first magnetic body 44. For example, the first magnetic body 44 has an N pole on the outer peripheral surface side and an S pole on the inner peripheral surface side. On the other hand, the movement-preventing magnetic body 51 has an S-pole on the inner peripheral surface side (side facing the first magnetic body 44) and an N-pole on the outer peripheral surface side.

移動阻止用磁性体51が発生する磁力が第1の磁性体44を引き付けることにより、補助照明具11が、鉗子チャンネル32内、且つ平坦面25aから補助照明具11の先端面(すなわち、照明窓43の先端面)が突出しない所定位置に引き付けられる。この所定位置に引き付けられた補助照明具11は、鉗子チャンネル32の軸方向における移動が阻止される。   The magnetic force generated by the movement-preventing magnetic body 51 attracts the first magnetic body 44, so that the auxiliary illuminating device 11 is inserted into the forceps channel 32 and from the flat surface 25 a to the distal end surface of the auxiliary illuminating device 11 (that is, the illumination window). The tip end surface 43) is attracted to a predetermined position where it does not protrude. The auxiliary illuminator 11 attracted to the predetermined position is prevented from moving in the axial direction of the forceps channel 32.

移動阻止用電磁石52は、鉗子チャンネル32の軸方向において移動阻止用磁性体51と互いに異なる位置にあり、なお且つ第1の磁性体44が移動阻止用磁性体51に引き付けられているとき、第2の磁性体45と対面する位置にある。本実施形態では、移動阻止用電磁石52は、平坦面25aの付近、且つ鉗子チャンネル32の周方向において撮像光学系26に最も近接する位置、すなわち鉗子チャンネル32を挟んで移動阻止用磁性体51の反対側に配されている。   The movement-preventing electromagnet 52 is located at a position different from the movement-preventing magnetic body 51 in the axial direction of the forceps channel 32, and the first magnetic body 44 is attracted to the movement-preventing magnetic body 51. It is in a position facing the second magnetic body 45. In the present embodiment, the movement-preventing electromagnet 52 is located in the vicinity of the imaging optical system 26 in the vicinity of the flat surface 25a and in the circumferential direction of the forceps channel 32, that is, the movement-preventing magnetic body 51 sandwiching the forceps channel 32. It is arranged on the opposite side.

移動阻止用電磁石52は、磁力を発生しない非通電状態と、磁力を発生する通電状態とが切り替えられる電磁石である。移動阻止用電磁石52が非通電状態のとき、鉗子チャンネル32内に挿入された補助照明具11は、第1の磁性体44だけが移動阻止用磁性体51に引き付けられて鉗子チャンネル32の内周面と当接し、筐体41が鉗子チャンネル32の軸方向に沿った方向に配される。これにより、照明窓43の光軸L1が撮像光学系26の光軸L2と平行に配される。   The movement preventing electromagnet 52 is an electromagnet that can be switched between a non-energized state that does not generate magnetic force and an energized state that generates magnetic force. When the movement-preventing electromagnet 52 is in a non-energized state, the auxiliary illuminator 11 inserted into the forceps channel 32 has only the first magnetic body 44 attracted to the movement-preventing magnetic body 51 so that the inner periphery of the forceps channel 32 is The housing 41 is arranged in a direction along the axial direction of the forceps channel 32 in contact with the surface. Thereby, the optical axis L1 of the illumination window 43 is arranged in parallel with the optical axis L2 of the imaging optical system 26.

一方、移動阻止用電磁石52が非通電状態から通電状態に切り替えられたとき、移動阻止用電磁石52が発生する磁力により補助照明具11の第2の磁性体45が引き付けられる。移動阻止用電磁石52は、通電状態のとき、第2の磁性体45を引き付ける磁力を発生するように極性が設定されており、例えば、第2の磁性体45は外周面側がS極で内周面側がN極であるのに対して、移動阻止用電磁石52は内周面側(第2の磁性体45と対面する側)がN極で外周面側がS極である。第1及び第2の磁性体44,45が移動阻止用磁性体51及び移動阻止用電磁石52に引き付けられることにより、補助照明具11は、鉗子チャンネル32の軸方向における移動が阻止されるとともに、筐体41が鉗子チャンネル32の軸方向に沿った方向から、鉗子チャンネル32の軸方向と交差する方向に傾く。これにより、照明窓43の光軸L1が撮像光学系26の光軸L2と物体側で交差する。このように移動阻止用磁性体51及び移動阻止用電磁石52に引き付けられることにより、照明窓43の光軸L1の方向が規定される。   On the other hand, when the movement preventing electromagnet 52 is switched from the non-energized state to the energized state, the second magnetic body 45 of the auxiliary lighting device 11 is attracted by the magnetic force generated by the movement preventing electromagnet 52. The electromagnet 52 for movement prevention is set to have a polarity so as to generate a magnetic force that attracts the second magnetic body 45 when energized. For example, the second magnetic body 45 has an S-pole on the outer peripheral surface side and an inner circumference. Whereas the surface side is an N pole, the movement preventing electromagnet 52 has an N pole on the inner peripheral surface side (side facing the second magnetic body 45) and an S pole on the outer peripheral surface side. The first and second magnetic bodies 44 and 45 are attracted to the movement-preventing magnetic body 51 and the movement-preventing electromagnet 52, so that the auxiliary illumination tool 11 is prevented from moving in the axial direction of the forceps channel 32. The housing 41 is inclined from the direction along the axial direction of the forceps channel 32 in a direction intersecting with the axial direction of the forceps channel 32. Thereby, the optical axis L1 of the illumination window 43 intersects with the optical axis L2 of the imaging optical system 26 on the object side. By being attracted to the movement-preventing magnetic body 51 and the movement-preventing electromagnet 52 in this way, the direction of the optical axis L1 of the illumination window 43 is defined.

なお、この移動阻止用電磁石52は、図示しない電源ケーブルを介してプロセッサ装置12に接続されており、プロセッサ装置12の操作により電力供給の有無が切り替えられる。そして、プロセッサ装置12から電源ケーブルを介して電力が供給されているとき、移動阻止用電磁石52は通電状態となって磁力を発生し、電力供給が停止されているとき、移動阻止用電磁石52は非通電状態となって磁力を発生しなくなる。   The movement-preventing electromagnet 52 is connected to the processor device 12 via a power cable (not shown), and whether or not power is supplied is switched by operating the processor device 12. When the power is supplied from the processor device 12 via the power cable, the movement preventing electromagnet 52 is energized to generate a magnetic force, and when the power supply is stopped, the movement preventing electromagnet 52 is It becomes a non-energized state and no magnetic force is generated.

上記構成の作用について図5及び図6を参照して説明する。被検体内に挿入部16を挿入し、電子内視鏡10での観察を行っている際、図5(A)に示すように、挿入部16の平坦面25aが被検体の表面Hに近接して照明窓27a,27bによる照明範囲及び撮像光学系26による観察範囲が狭くなり、観察像が暗くなる場合がある。このような場合、ユーザーは、補助照明具11を鉗子チャンネル32内へ挿入して使用する。なお、このとき、移動阻止用電磁石52は非通電状態となっており、磁力を発生していない。   The operation of the above configuration will be described with reference to FIGS. When the insertion portion 16 is inserted into the subject and observation is performed with the electronic endoscope 10, the flat surface 25a of the insertion portion 16 is close to the surface H of the subject as shown in FIG. As a result, the illumination range by the illumination windows 27a and 27b and the observation range by the imaging optical system 26 become narrow, and the observation image may become dark. In such a case, the user inserts the auxiliary lighting device 11 into the forceps channel 32 and uses it. At this time, the movement-preventing electromagnet 52 is in a non-energized state and does not generate a magnetic force.

鉗子口23から鉗子チャンネル32内へ挿入された補助照明具11の筐体41は、電源ケーブル46を介して押し込まれることにより、挿入部16の先端側へ送り込まれていく。補助照明具11の筐体41が、挿入部16の先端部16a付近まで到達したとき、筐体41の先端側に位置する第2の磁性体45と、移動阻止用磁性体51の極性が逆であることから、筐体41を挿入部16の先端側へ送り込む際、ユーザーは若干の抵抗力を感じるが、この抵抗力を乗り越えて補助照明具11の筐体41をさらに押し込むと、第1の磁性体44が移動阻止用磁性体51に引き付けられる。これにより、補助照明具11は、鉗子チャンネル32内、且つ平坦面25aから突出しない所定位置に引き付けられ、鉗子チャンネル32の軸方向における移動が阻止される(図5(B)に示す状態)。この状態で、電源制御装置15の制御によりLED光源42がオンされると、補助照明具11は、鉗子出口28を通して被検体の表面Hに照明光を照射することが可能となる。   The housing 41 of the auxiliary lighting device 11 inserted into the forceps channel 32 from the forceps opening 23 is sent to the distal end side of the insertion portion 16 by being pushed through the power cable 46. When the housing 41 of the auxiliary illuminator 11 reaches the vicinity of the distal end portion 16a of the insertion portion 16, the polarities of the second magnetic body 45 located on the distal end side of the housing 41 and the movement preventing magnetic body 51 are reversed. Therefore, when the casing 41 is sent to the distal end side of the insertion portion 16, the user feels a slight resistance, but if the resistance 41 is overcome and the casing 41 of the auxiliary lighting device 11 is further pushed, The magnetic body 44 is attracted to the movement preventing magnetic body 51. As a result, the auxiliary illumination tool 11 is attracted to a predetermined position in the forceps channel 32 and does not protrude from the flat surface 25a, and the movement of the forceps channel 32 in the axial direction is prevented (state shown in FIG. 5B). In this state, when the LED light source 42 is turned on under the control of the power supply control device 15, the auxiliary illuminator 11 can irradiate the surface H of the subject with illumination light through the forceps outlet 28.

そして、さらに挿入部16の平坦面25aが被検体の表面Hに近接した場合(図6(A)に示す状態)、補助照明具11による照明範囲が狭まるため、観察像が暗くなることがある。このような場合、上述したように、プロセッサ装置12を操作して移動阻止用電磁石52を通電状態に切り替える。移動阻止用電磁石52が非通電状態から通電状態に切り替えられたとき、補助照明具11が移動阻止用磁性体51及び移動阻止用電磁石52に引き付けられることにより、照明窓43の光軸L1が撮像光学系26の光軸L2と物体側で交差する。これにより、補助照明具11の照明範囲が、撮像光学系26の観察範囲と重なるため、撮像光学系26から取り込まれる観察像を明るくすることができる(図6(B)に示す状態)。   Further, when the flat surface 25a of the insertion portion 16 is closer to the surface H of the subject (the state shown in FIG. 6A), the illumination range by the auxiliary illumination tool 11 is narrowed, and the observation image may become dark. . In such a case, as described above, the processor device 12 is operated to switch the movement preventing electromagnet 52 to the energized state. When the movement-preventing electromagnet 52 is switched from the non-energized state to the energized state, the auxiliary illuminator 11 is attracted to the movement-preventing magnetic body 51 and the movement-preventing electromagnet 52, thereby imaging the optical axis L1 of the illumination window 43. It intersects the optical axis L2 of the optical system 26 on the object side. Thereby, since the illumination range of the auxiliary illumination tool 11 overlaps with the observation range of the imaging optical system 26, the observation image captured from the imaging optical system 26 can be brightened (state shown in FIG. 6B).

以上のようにして、電子内視鏡10は、簡便な構成で、鉗子チャンネル32の軸方向における補助照明具11の移動を阻止しているので、平坦面25aからの補助照明具11の突出を防止することができる。これにより、補助照明具11が被検体にぶつかったり、補助照明具11による照明光が突然変化したりすることを防ぐことができるため、鉗子チャンネル32に補助照明具11を挿入して使用するとき、内視鏡システム2を安全に使用することができる。   As described above, since the electronic endoscope 10 has a simple configuration and prevents the auxiliary illuminator 11 from moving in the axial direction of the forceps channel 32, the projection of the auxiliary illuminator 11 from the flat surface 25a is prevented. Can be prevented. As a result, it is possible to prevent the auxiliary illuminator 11 from hitting the subject and suddenly changing the illumination light from the auxiliary illuminator 11, so that when the auxiliary illuminator 11 is inserted into the forceps channel 32 and used. The endoscope system 2 can be used safely.

なお、上記実施形態の電子内視鏡10では、移動阻止用磁性体51及び移動阻止用電磁石52が、鉗子チャンネル32を挟んで互いに反対側の位置に配設されているが、本発明はこれに限るものではなく、鉗子チャンネル32の周方向において互いに同じ位置に設けてもよい。   In the electronic endoscope 10 of the above-described embodiment, the movement-preventing magnetic body 51 and the movement-preventing electromagnet 52 are disposed at positions opposite to each other with the forceps channel 32 interposed therebetween. It is not restricted to it, You may provide in the mutually same position in the circumferential direction of the forceps channel 32. FIG.

また、上記実施形態では、電子内視鏡10に設けられ、鉗子チャンネル32の軸方向における補助照明具11の移動を阻止する移動阻止手段として、1つの移動阻止用磁性体51及び1つの移動阻止用電磁石52を備えているが、本発明はこれに限らず、移動阻止手段としては、両方とも移動阻止用磁性体、または両方とも移動阻止用電磁石でもよい。さらにまた、3つ以上の移動阻止手段を設けてもよい。なお、移動阻止手段として両方とも移動阻止用磁性体にした場合、上記実施形態のように、通電状態/非通電状態の切り替えにより補助照明具11が傾いて照明窓43の光軸L1の方向が変化することがないため、照明窓43の光軸L1が撮像光学系26の光軸L2と物体側で交差する方向に補助照明具11が常時セットされる。   In the above-described embodiment, one movement-preventing magnetic body 51 and one movement-preventing unit are provided as the movement-preventing means that is provided in the electronic endoscope 10 and prevents the auxiliary illumination tool 11 from moving in the axial direction of the forceps channel 32. However, the present invention is not limited to this, and the movement blocking means may be both a movement blocking magnetic body, or both may be a movement blocking electromagnet. Furthermore, three or more movement prevention means may be provided. In the case where both of the movement blocking means are made of a movement blocking magnetic body, the auxiliary illuminator 11 is inclined by switching between the energized state / non-energized state and the direction of the optical axis L1 of the illumination window 43 is changed as in the above embodiment. Since there is no change, the auxiliary illumination tool 11 is always set in a direction in which the optical axis L1 of the illumination window 43 intersects the optical axis L2 of the imaging optical system 26 on the object side.

また、移動阻止手段として、両方とも移動阻止用電磁石にした場合、内視鏡システム2で補助照明具11を使用しないときは、移動阻止用電磁石を両方とも非通電状態とする。これにより、補助照明具11を使用せず、処置具を電子内視鏡10の鉗子チャンネル32に挿入して使用するとき、移動阻止用電磁石から発生される磁力の影響を処置具が受けることを考慮しなくてもよい。   Moreover, when both are made into the movement prevention electromagnet as a movement prevention means, when the auxiliary | assistant illumination tool 11 is not used with the endoscope system 2, both the movement prevention electromagnets are made into a non-energized state. Accordingly, when the treatment instrument is inserted into the forceps channel 32 of the electronic endoscope 10 and used without using the auxiliary illumination tool 11, the treatment instrument is affected by the magnetic force generated from the electromagnet for movement prevention. There is no need to consider it.

また、上記実施形態では、移動阻止手段を構成する移動阻止用磁性体51、補助照明具11に設けられる第1及び第2の磁性体44,45として永久磁石を示しているが、永久磁石に限らず、鉄、ニッケル、コバルトなど磁性を帯びることが可能な磁性体であればよい。さらにまた、補助照明具11に設けられる磁性体の位置としては、上記実施形態で示した第1及び第2の磁性体44,45の位置に限定されるものではなく、筐体41の軸方向において互いに異なる位置であればよい。また、1つの補助照明具11に対して、3つ以上の磁性体を設けてもよい。   Moreover, in the said embodiment, although the permanent magnet was shown as the 1st and 2nd magnetic bodies 44 and 45 provided in the movement prevention magnetic body 51 and the auxiliary | assistant illumination tool 11 which comprise a movement prevention means, Any magnetic material can be used as long as it can be magnetized, such as iron, nickel, and cobalt. Furthermore, the position of the magnetic body provided in the auxiliary illuminator 11 is not limited to the position of the first and second magnetic bodies 44 and 45 shown in the above embodiment, but the axial direction of the housing 41 The positions may be different from each other. Moreover, you may provide three or more magnetic bodies with respect to the one auxiliary lighting tool 11. FIG.

上記実施形態においては、移動阻止手段としての移動阻止用磁性体51、移動阻止用電磁石52は、鉗子チャンネル32の外周面に沿って配されているが、本発明は、これに限らず、鉗子チャンネル32の付近で、且つ発生する磁力が鉗子チャンネル32の内部に届く位置に配すればよい。   In the above embodiment, the movement blocking magnetic body 51 and the movement blocking electromagnet 52 as the movement blocking means are arranged along the outer peripheral surface of the forceps channel 32. However, the present invention is not limited to this, and the forceps is not limited thereto. What is necessary is just to distribute | arrange in the position where the magnetic force to generate | occur | produce in the vicinity of the channel 32 reaches the inside of the forceps channel 32.

上記実施形態においては、補助照明具11として、LED光源42を内蔵する構成を示したが、補助照明具の構成としてはこれに限らず、外部の光源装置からライトガイドで光を導き、ライトガイドの出射端に設けた照明光学系で照明光を照射する構成でもよい。   In the above-described embodiment, the configuration in which the LED light source 42 is incorporated as the auxiliary lighting device 11 is shown. However, the configuration of the auxiliary lighting device is not limited to this, and light is guided from an external light source device with a light guide, and the light guide. A configuration in which illumination light is irradiated by an illumination optical system provided at the emission end of the light source may be used.

上記実施形態においては、撮像装置を用いて被検体の状態を撮像した画像を観察する電子内視鏡を例に上げて説明しているが、本発明はこれに限るものではなく、光学的イメージガイドを採用して被検体の状態を観察する内視鏡にも適用することができる。   In the above-described embodiment, an electronic endoscope that observes an image obtained by imaging the state of the subject using the imaging apparatus is described as an example. However, the present invention is not limited to this, and an optical image is not limited thereto. The present invention can also be applied to an endoscope that employs a guide and observes the state of a subject.

2 内視鏡システム
10 電子内視鏡
11 補助照明具
16 挿入部
26 撮像光学系(観察光学系)
28 鉗子出口
32 鉗子チャンネル
41 筐体
42 LED光源
43 照明窓(照明光学系)
44 第1の磁性体
45 第2の磁性体
51 移動阻止用磁性体
52 移動阻止用電磁石
2 Endoscope System 10 Electronic Endoscope 11 Auxiliary Illuminator 16 Insertion Unit 26 Imaging Optical System (Observation Optical System)
28 Forceps outlet 32 Forceps channel 41 Case 42 LED light source 43 Illumination window (illumination optical system)
44 1st magnetic body 45 2nd magnetic body 51 Movement prevention magnetic body 52 Movement prevention electromagnet

Claims (10)

被検体内に挿入される挿入部と、
前記挿入部の先端に配され、被検体の像光を取り込むための観察光学系と、
前記挿入部内に配された処置具挿通チャンネルと、
前記先端に配され、前記処置具挿通チャンネルに接続される処置具出口とが設けられ、
前記処置具挿通チャンネルに、先端部に設けられた照明光学系を通して照明光を照射する補助照明具が挿入される内視鏡において、
前記処置具挿通チャンネル内の所定位置に前記補助照明具を引き付ける磁力を発生し、前記処置具挿通チャンネルの軸方向における前記補助照明具の移動を阻止する移動阻止手段を備えたことを特徴とする内視鏡。
An insertion part to be inserted into the subject;
An observation optical system arranged at the distal end of the insertion portion and for capturing image light of the subject;
A treatment instrument insertion channel disposed in the insertion portion;
A treatment instrument outlet disposed at the tip and connected to the treatment instrument insertion channel;
In the endoscope in which an auxiliary illumination tool that irradiates illumination light through an illumination optical system provided at the distal end is inserted into the treatment instrument insertion channel,
A movement blocking means is provided that generates a magnetic force that attracts the auxiliary illuminator at a predetermined position in the treatment instrument insertion channel and prevents movement of the auxiliary illuminator in the axial direction of the treatment instrument insertion channel. Endoscope.
前記移動阻止手段は、前記処置具挿通チャンネルの付近に複数設けられ、前記処置具挿通チャンネルの軸方向において互いに異なる位置から前記補助照明具を引き付ける磁力をそれぞれ発生することを特徴とする請求項1記載の内視鏡。   The plurality of movement preventing means are provided in the vicinity of the treatment instrument insertion channel, and generate magnetic forces that attract the auxiliary illumination instruments from different positions in the axial direction of the treatment instrument insertion channel, respectively. The endoscope described. 前記移動阻止手段は、前記補助照明具に設けられた磁性体を引き付ける移動阻止用磁性体からなることを特徴とする請求項2記載の内視鏡。   The endoscope according to claim 2, wherein the movement blocking means is made of a movement blocking magnetic body that attracts a magnetic body provided in the auxiliary lighting device. 前記移動阻止手段は、磁力を発生しない非通電状態と、磁力を発生して前記補助照明具に設けられた磁性体を引き付ける通電状態との間で切り替えが行われる移動阻止用電磁石からなることを特徴とする請求項2項記載の内視鏡。   The movement preventing means includes a movement preventing electromagnet that is switched between a non-energized state that does not generate magnetic force and an energized state that generates magnetic force and attracts the magnetic body provided in the auxiliary lighting device. The endoscope according to claim 2, characterized in that: 前記移動阻止手段は、前記処置具挿通チャンネルの周方向において互いに反対側の位置に配され、発生する磁力が前記補助照明具をそれぞれ引き付けることにより、前記照明光学系の光軸が、前記観察光学系の光軸と物体側で交差することを特徴とする請求項2〜4のいずれか1項に記載の内視鏡。   The movement preventing means is arranged at positions opposite to each other in the circumferential direction of the treatment instrument insertion channel, and the generated magnetic force attracts the auxiliary illuminator, so that the optical axis of the illumination optical system becomes the observation optical The endoscope according to any one of claims 2 to 4, wherein the endoscope intersects the optical axis of the system on the object side. 前記移動阻止手段は、前記補助照明具に設けられた第1の磁性体を引き付ける移動阻止用磁性体と、磁力を発生しない非通電状態と、磁力を発生して前記補助照明具に設けられた第2の磁性体を引き付ける通電状態との間で切り替えが行われる移動阻止用電磁石とからなり、前記移動阻止用磁性体及び前記移動阻止用電磁石を前記処置具挿通チャンネルの周方向において互いに反対側の位置に配し、前記移動阻止用電磁石が非通電状態のとき、前記移動阻止用磁性体から発生する磁力が前記補助照明具を引き付けることにより、前記照明光学系の光軸が前記観察光学系の光軸と平行に配され、前記移動阻止用電磁石が非通電状態から通電状態に切り替わるとき、前記移動阻止用磁性体及び前記移動阻止用電磁石から発生する磁力が前記補助照明具をそれぞれ引き付けることにより、前記照明光学系の光軸が、前記観察光学系の光軸と物体側で交差することを特徴とする請求項2記載の内視鏡。   The movement preventing means is provided in the auxiliary illuminator that generates a magnetic force for preventing movement, a non-energized state that does not generate magnetic force, and attracts the first magnetic body provided in the auxiliary illuminator. A movement-preventing electromagnet that is switched between an energized state that attracts the second magnetic body, and the movement-preventing magnetic body and the movement-preventing electromagnet are opposite to each other in the circumferential direction of the treatment instrument insertion channel. And when the electromagnet for blocking movement is in a non-energized state, the magnetic force generated from the magnetic body for blocking movement attracts the auxiliary illuminator, so that the optical axis of the illumination optical system becomes the observation optical system When the movement preventing electromagnet is switched from a non-energized state to an energized state, a magnetic force generated from the movement preventing magnetic body and the movement preventing electromagnet is applied to the auxiliary illumination. By attracting ingredients, respectively, the optical axis of the illumination optical system, an endoscope according to claim 2, wherein the intersecting at the optical axis and the object side of the observation optical system. 前記移動阻止手段は、前記処置具挿通チャンネルの内部に突出しない位置に配されていることを特徴とする請求項1〜6のいずれか1項に記載の内視鏡。   The endoscope according to any one of claims 1 to 6, wherein the movement preventing means is arranged at a position that does not protrude into the treatment instrument insertion channel. 請求項1〜7のいずれか1項に記載の内視鏡と、前記補助照明具とを備えることを特徴とする内視鏡システム。   An endoscope system comprising the endoscope according to any one of claims 1 to 7 and the auxiliary lighting device. 被検体内に挿入される挿入部、前記挿入部の先端に配され、被検体の像光を取り込むための観察光学系、前記挿入部内に配された処置具挿通チャンネル、及び前記先端に配され、前記処置具挿通チャンネルに接続される処置具出口を備える内視鏡の前記処置具挿通チャンネルに挿入される補助照明具において、
前記処置具挿通チャンネルに挿入される筐体と、
前記筐体の先端部に設けられ、被検体内に照明光を照射するための照明光学系と、
前記内視鏡に設けられた移動阻止手段が発生する磁力により前記処置具挿通チャンネル内の所定位置に引き付けられて前記処置具挿通チャンネルの軸方向における移動が阻止される磁性体とを備えることを特徴とする補助照明具。
An insertion portion to be inserted into the subject, an observation optical system for taking in the image light of the subject, disposed at the distal end of the insertion portion, a treatment instrument insertion channel disposed in the insertion portion, and a distal end In the auxiliary illuminator inserted into the treatment instrument insertion channel of an endoscope having a treatment instrument outlet connected to the treatment instrument insertion channel,
A housing to be inserted into the treatment instrument insertion channel;
An illumination optical system for illuminating illumination light in the subject, provided at the tip of the housing;
A magnetic body that is attracted to a predetermined position in the treatment instrument insertion channel by a magnetic force generated by a movement prevention means provided in the endoscope and is prevented from moving in the axial direction of the treatment instrument insertion channel. Auxiliary lighting equipment characterized.
前記磁性体は、前記筐体の外周面付近に複数設けられ、前記筐体の軸方向において互いに異なる位置に設けられていることを特徴とする請求項9記載の補助照明具。   The auxiliary illuminator according to claim 9, wherein a plurality of the magnetic bodies are provided in the vicinity of the outer peripheral surface of the casing, and are provided at different positions in the axial direction of the casing.
JP2010286096A 2010-12-22 2010-12-22 Endoscope, endoscope system, and auxiliary lighting fixture Pending JP2012130555A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021530320A (en) * 2018-07-20 2021-11-11 アースレックス インコーポレイテッドArthrex, Inc. Medical imaging system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021530320A (en) * 2018-07-20 2021-11-11 アースレックス インコーポレイテッドArthrex, Inc. Medical imaging system
JP7265613B2 (en) 2018-07-20 2023-04-26 アースレックス インコーポレイテッド medical imaging system

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