JP2009061205A - Electronic endoscopic apparatus - Google Patents

Electronic endoscopic apparatus Download PDF

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JP2009061205A
JP2009061205A JP2007233722A JP2007233722A JP2009061205A JP 2009061205 A JP2009061205 A JP 2009061205A JP 2007233722 A JP2007233722 A JP 2007233722A JP 2007233722 A JP2007233722 A JP 2007233722A JP 2009061205 A JP2009061205 A JP 2009061205A
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patient circuit
cable
insulating
plate
patient
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Japanese (ja)
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Toshio Oki
俊夫 大木
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Fujinon Corp
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Fujinon Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the attaching work of an insulating tube or an insulating tape to a cable, and to enable a specified insulation pressure resistance between a patient circuit and a cabinet including the cable to be surely maintained. <P>SOLUTION: A processor apparatus is equipped with the patient circuit 25 which is electrically separated from a secondary circuit. The cabinet 11 of the processor apparatus is connected with a ground potential, and an insulating plate 20 made of a synthetic resin consisting of a flat surface plate 20a and a side surface plate 20b is attached to the cabinet 11. Then, a patient circuit board 24-1 on which the patient circuit 25 is mounted is attached to the insulating plate 20. Cables 27a, 27f and so forth are connected with the patient circuit board 24-1, and the processor apparatus is constituted in such a manner that the insulating plate 20 may be interposed between the whole of the patient circuit 25 including the cables 27a and 27f and the cabinet 11. On the side surface plate 20b of the insulating plate 20, a notched section 21 for making the cable 27f and so forth pass through is installed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は電子内視鏡装置、特に2次回路から電気的に分離された患者側の患者回路と筐体との間の絶縁のための構成に関する。   The present invention relates to an electronic endoscope apparatus, and more particularly to a configuration for insulation between a patient-side patient circuit electrically isolated from a secondary circuit and a housing.

電子内視鏡装置は、例えばスコープ(電子内視鏡)に搭載された固体撮像素子であるCCD(Charge Coupled Device)をCCD駆動回路により駆動することにより被観察体を撮像し、このスコープが接続されたプロセッサ装置に上記CCDの出力信号を供給し、このプロセッサ装置内の画像信号処理回路にて所定の信号処理を施すことにより、被観察体画像をモニタに表示することができる。このようなプロセッサ装置の画像信号処理回路として、患者回路と主電源部が配置された2次回路とが設けられ、この患者回路と2次回路をアイソレーションによって電気的に分離することにより、スコープ側の電気的安全性が維持されている。   An electronic endoscope apparatus, for example, captures an object to be observed by driving a CCD (Charge Coupled Device), which is a solid-state imaging device mounted on a scope (electronic endoscope), by a CCD driving circuit, and this scope is connected. The output signal of the CCD is supplied to the processed processor device, and an image signal processing circuit in the processor device performs predetermined signal processing, so that the image of the object to be observed can be displayed on the monitor. As an image signal processing circuit of such a processor device, a patient circuit and a secondary circuit in which a main power supply unit is arranged are provided, and the patient circuit and the secondary circuit are electrically separated by isolation, thereby providing a scope. Side electrical safety is maintained.

そして、上記患者回路は、グランドに接地された筐体との間で所定の絶縁状態が維持されており、このための従来の1つの構成例が図4に示される。
図4において、プロセッサ装置の金属製筐体1には、スコープ側のケーブルコネクタを接続するコネクタ受け部2が設けられ、このコネクタ受け部2に、ケーブル(電気コード)3を介して患者回路基板4が接続され、この患者回路基板4に、患者回路5として画像信号処理回路を構成する各種の回路が実装される。上記筐体1は、グランド電位に接続されており、2次回路のグランド線等が接続される。
And the said patient circuit is maintaining the predetermined insulation state between the housing | casing earth | grounded to the ground, FIG. 4 shows one example of the conventional structure for this.
In FIG. 4, a metal housing 1 of the processor device is provided with a connector receiving portion 2 for connecting a scope side cable connector, and a patient circuit board is connected to the connector receiving portion 2 via a cable (electric cord) 3. 4 is connected to the patient circuit board 4 and various circuits constituting an image signal processing circuit as the patient circuit 5 are mounted. The casing 1 is connected to a ground potential, and a secondary circuit ground line or the like is connected thereto.

このような患者回路基板4は、筐体1に設けられた支持部7に、絶縁体8を介して接続されるように構成され、これによって、所定耐圧の絶縁状態が維持される。
また、コネクタ受け部2から患者回路基板4に配置されるケーブル3、或いは図示していないが、複数の患者回路基板4間に配置されるケーブルについては、図示の絶縁チューブ9を取り付けたり、絶縁テープを巻いたりして、筐体1との間での所定の絶縁耐圧が維持される。
特開2005−95662号公報
Such a patient circuit board 4 is configured to be connected to a support portion 7 provided in the housing 1 via an insulator 8, thereby maintaining an insulating state with a predetermined breakdown voltage.
In addition, the cable 3 arranged from the connector receiving part 2 to the patient circuit board 4 or the cable arranged between the plurality of patient circuit boards 4 is not shown, but the illustrated insulating tube 9 is attached or insulated. A predetermined withstand voltage with respect to the housing 1 is maintained by winding a tape or the like.
JP 2005-95662 A

しかしながら、従来の電子内視鏡装置における患者回路5と筐体1との間の絶縁構造では、上述のように、ケーブル3を含む複数のケーブルに対し絶縁チューブ9を装着したり、絶縁テープを巻いたりしなければならず、このための作業が煩雑であるという問題があった。また、患者回路基板4に接続されるケーブル3等の途中には、高周波ノイズを除去するために、肉厚のある円筒状のフェライトコア(ノイズ対策部材)が取り付けられており、このフェライトコアの取付けを考慮する必要があるため、上記絶縁チューブ9や絶縁テープの取付けが更に煩雑となっている。   However, in the insulating structure between the patient circuit 5 and the housing 1 in the conventional electronic endoscope apparatus, as described above, the insulating tube 9 is attached to a plurality of cables including the cable 3, or an insulating tape is attached. There is a problem that the work for this purpose is complicated. In addition, a thick cylindrical ferrite core (noise countermeasure member) is attached in the middle of the cable 3 or the like connected to the patient circuit board 4 in order to remove high-frequency noise. Since it is necessary to consider the mounting, the mounting of the insulating tube 9 and the insulating tape is further complicated.

更に、取り付けた絶縁チューブ9が破れたり、絶縁テープが外れたりすることもあり、この場合には、所定の絶縁耐圧が維持できない。   Furthermore, the attached insulating tube 9 may be torn or the insulating tape may come off. In this case, a predetermined withstand voltage cannot be maintained.

本発明は上記問題点に鑑みてなされたものであり、その目的は、ケーブルに対する絶縁チューブや絶縁テープの取付け作業をなくし、ケーブルを含む患者回路−筐体間の所定の絶縁耐圧を確実に維持することができる電子内視鏡装置を提供することにある。   The present invention has been made in view of the above problems, and its object is to eliminate the work of attaching an insulating tube and an insulating tape to a cable and to reliably maintain a predetermined withstand voltage between a patient circuit including the cable and a housing. An object of the present invention is to provide an electronic endoscope apparatus capable of performing the above.

上記目的を達成するために、請求項1の発明は、電子内視鏡内の撮像素子に関する画像信号処理を実行するために設けられ、後段の2次回路とは電気的に分離された患者回路を有し、この患者回路を、グランドに接続された筐体内に配置する電子内視鏡装置において、上記患者回路及びこれに接続されるケーブルと上記筐体との間に、この患者回路及びケーブル−筐体間を電気的に分離するための大きさの絶縁プレートを設けたことを特徴とする。
請求項2の発明は、上記絶縁プレート(合成樹脂製)を、プレート本体である平面板の周辺から垂直方向へ側面板を延出させた形状とし、この側面板には、ケーブルを通すための切り欠き部を設けたことを特徴とする。
In order to achieve the above object, the invention according to claim 1 is a patient circuit that is provided to execute image signal processing related to an image sensor in an electronic endoscope and is electrically separated from a secondary circuit at a subsequent stage. In the electronic endoscope apparatus in which the patient circuit is disposed in a casing connected to the ground, the patient circuit and the cable are interposed between the patient circuit and the cable connected to the patient circuit and the casing. -An insulating plate having a size for electrically separating the casings is provided.
In the invention of claim 2, the insulating plate (made of synthetic resin) has a shape in which a side plate is extended in the vertical direction from the periphery of the flat plate which is the plate body, and a cable is passed through the side plate. A notch is provided.

本発明の電子内視鏡装置によれば、絶縁プレートによって、患者回路とこれに接続されるケーブルが筐体に対し簡単かつ確実に絶縁されるので、ケーブルに対する絶縁チューブや絶縁テープの取付け作業が不要となり、フェライトコア等の取付けに左右されることもない。
また、絶縁チューブの破壊、絶縁テープの外れを考慮する必要がなく、ケーブルを含む患者回路−筐体間の所定の絶縁耐圧を確実に維持することができるという効果がある。
According to the electronic endoscope apparatus of the present invention, since the patient circuit and the cable connected thereto are easily and reliably insulated from the housing by the insulating plate, the mounting operation of the insulating tube and the insulating tape to the cable is prevented. It becomes unnecessary and does not depend on the mounting of the ferrite core or the like.
In addition, there is no need to consider the breakage of the insulating tube and the disconnection of the insulating tape, and there is an effect that the predetermined withstand voltage between the patient circuit including the cable and the housing can be reliably maintained.

図1乃至図3には、実施例に係る電子内視鏡装置の構成が示されており、図1はプロセッサ装置内の患者回路部分を上下反転して見たもの、図2は光源部を有するプロセッサ装置の内部構成を示したもの、図3は患者回路部分の全体の斜視図である。図2に示されるように、プロセッサ装置の金属製筐体11は、グランド(GND)電位に接続されており、このプロセッサ装置筐体11の上部には、光源13が配置され、この光源13の出力光をスコープ(電子内視鏡)側の光源コネクタ14に配置されたライトガイド端部へ照明光として供給するようになっている。   FIGS. 1 to 3 show the configuration of the electronic endoscope apparatus according to the embodiment. FIG. 1 is a view of a patient circuit portion in the processor apparatus turned upside down, and FIG. FIG. 3 is a perspective view of the entire patient circuit portion, showing the internal configuration of the processor device. As shown in FIG. 2, the metal housing 11 of the processor device is connected to a ground (GND) potential, and a light source 13 is disposed on the processor device housing 11. The output light is supplied as illumination light to the light guide end portion arranged in the light source connector 14 on the scope (electronic endoscope) side.

図1にも示されるように、筐体11の下部側面には、スコープ側の電気コネクタを接続するコネクタ受け部17が設けられる。そして、この筐体11の中間板11cに設けられた支持部(取付け部)18に、合成樹脂製の絶縁プレート20がネジ等で取り付けられる。この絶縁プレート20は、図3に示されるように、平面板(プレート本体であり、底面板でもある)20aと側面板20bから盆状(箱状)に形成され、この側面板20bには、ケーブルを通す切り欠き21が設けられる。   As shown in FIG. 1, a connector receiving portion 17 for connecting an electric connector on the scope side is provided on the lower side surface of the housing 11. Then, an insulating plate 20 made of synthetic resin is attached to a support portion (attachment portion) 18 provided on the intermediate plate 11c of the housing 11 with a screw or the like. As shown in FIG. 3, the insulating plate 20 is formed in a tray shape (box shape) from a flat plate (which is a plate body and also a bottom plate) 20a and a side plate 20b. A notch 21 through which the cable passes is provided.

そして、この絶縁プレート20に、スペーサ23を介して患者回路基板24-1,24−2(図3)がネジ等で取り付けられており、この患者回路基板24−1,24−2に、画像信号処理回路としての患者回路25が実装される。一方の患者回路基板24−1の患者回路25としては、スコープ側のROM(読出し専用メモリ)との間で情報通信を行う回路(マイコン等)やDSP(デジタル信号プロセッサ)等が配置され、他方の患者回路基板24−2の患者回路25として、TG(タイミングジェネレータ)や患者回路用の電源回路等が配置される。なお、この患者回路25として、撮像素子であるCCDを駆動するCCD駆動回路等を含んでもよい。   The patient circuit boards 24-1 and 24-2 (FIG. 3) are attached to the insulating plate 20 via the spacers 23 with screws or the like. The patient circuit boards 24-1 and 24-2 are imaged. A patient circuit 25 as a signal processing circuit is mounted. As the patient circuit 25 of one patient circuit board 24-1, a circuit (such as a microcomputer) or a DSP (digital signal processor) that performs information communication with a ROM (read only memory) on the scope side is disposed, and the other. As the patient circuit 25 of the patient circuit board 24-2, a TG (timing generator), a power circuit for the patient circuit, and the like are arranged. The patient circuit 25 may include a CCD drive circuit that drives a CCD, which is an image sensor.

また、上記患者回路基板24−1には、上記コネクタ受け部17からのケーブル(電気コード群)27aが切り欠き部21を通して接続され、その他にも、ケーブル(電気コード群)27b〜27fが切り欠き部21を利用しながら配置されており、この中のケーブル27fが2次回路基板29へ接続される(図1及び図2の患者回路部の右側は、患者回路基板24−2を示している)。この2次回路基板29に搭載された2次回路30としては、患者回路25から出力された画像信号に対し、所定の画像処理を施す画像信号処理回路や主電源部が配置され、この2次回路30と上記患者回路25とは、図示していないが、アイソレーションデバイス(パルストランス又はフォトカプラ等)によって電気的に分離され、これによって、2次回路30側からの電流やノイズが患者回路25及びスコープ側へ流入することが防止される。   Further, a cable (electric cord group) 27a from the connector receiving portion 17 is connected to the patient circuit board 24-1 through the notch portion 21, and cables (electric cord groups) 27b to 27f are also cut. The cable 27f is connected to the secondary circuit board 29 (the right side of the patient circuit part in FIGS. 1 and 2 shows the patient circuit board 24-2). ) As the secondary circuit 30 mounted on the secondary circuit board 29, an image signal processing circuit for performing predetermined image processing on the image signal output from the patient circuit 25 and a main power supply unit are arranged. Although not shown, the circuit 30 and the patient circuit 25 are electrically separated by an isolation device (such as a pulse transformer or a photocoupler), whereby current and noise from the secondary circuit 30 side are 25 and the scope side are prevented from flowing.

そして、上記絶縁プレート20は、患者回路基板24−1,24−2を含む領域だけでなく、ケーブル27a〜27fの全てを含む領域に配置される。即ち、絶縁プレート20が患者回路基板24−1,24−2及びケーブル27a〜27fと筐体11との間を遮蔽するように両者間に介在する。また、ケーブル27a,27b等の途中の外周に、フェライトコア32が取り付けられる。   The insulating plate 20 is disposed not only in the region including the patient circuit boards 24-1 and 24-2, but also in the region including all the cables 27a to 27f. In other words, the insulating plate 20 is interposed between the patient circuit boards 24-1 and 24-2 and the cables 27a to 27f and the housing 11 so as to shield them. Moreover, the ferrite core 32 is attached to the outer periphery in the middle of the cables 27a, 27b and the like.

このような絶縁プレート20によれば、患者回路25及びケーブル27a〜27fについて筐体11に対する絶縁が簡単かつ確実に行われ、従来のような絶縁チューブ、絶縁テープの取付けを考慮することなく、フェライトコア32の取付けも容易に行うことができる。なお、図2に示されるように、上記患者回路基板24−1,24−2の下側は、筐体11との間に、所定高さの空間が存在することにより、必要な絶縁耐圧が維持される。   According to such an insulating plate 20, the patient circuit 25 and the cables 27a to 27f are easily and reliably insulated from the casing 11, and the ferrite tube can be used without considering the conventional installation of the insulating tube and insulating tape. The core 32 can be easily attached. As shown in FIG. 2, the lower side of the patient circuit boards 24-1 and 24-2 has a space with a predetermined height between the housing 11 and the required withstand voltage. Maintained.

上記実施例では、2枚の患者回路基板24−1,24−2を用いた例を示したが、患者回路基板は1枚でもよいし、2枚を縦方向に重ねて配置してもよい。また、側面板20bを外周の全てに配置したが、ケーブル等が配置されない部分については、側面板20bを取り除いてもよい。   In the above-described embodiment, an example using two patient circuit boards 24-1 and 24-2 has been described. However, one patient circuit board may be used, or two patient circuit boards may be arranged in the vertical direction. . Further, although the side plate 20b is disposed on the entire outer periphery, the side plate 20b may be removed from a portion where a cable or the like is not disposed.

更に、患者回路がプロセッサ装置内に配置されている例を示したが、本来的に患者回路として位置付けられるスコープ側に、上記患者回路(CCD駆動回路や画像信号処理回路)を配置したシステムにおいても、本発明を適用することができる。   Furthermore, although the example in which the patient circuit is arranged in the processor device has been shown, in the system in which the patient circuit (CCD driving circuit and image signal processing circuit) is arranged on the scope side which is originally positioned as the patient circuit. The present invention can be applied.

本発明の実施例に係る電子内視鏡装置の患者回路部の構成を上下反転した状態で示す側面図である。It is a side view which shows the structure of the patient circuit part of the electronic endoscope apparatus which concerns on the Example of this invention in the state upside down. 実施例の電子内視鏡装置におけるプロセッサ装置(光源部を備えたもの)の構成を示す側面図である。It is a side view which shows the structure of the processor apparatus (those provided with the light source part) in the electronic endoscope apparatus of an Example. 実施例の患者回路部の全体の構成を示す斜視図である。It is a perspective view which shows the whole structure of the patient circuit part of an Example. 従来の電子内視鏡装置の患者回路部の構成を示す側面図である。It is a side view which shows the structure of the patient circuit part of the conventional electronic endoscope apparatus.

符号の説明Explanation of symbols

1,11…筐体(プロセッサ装置)、
3,27a〜17f…ケーブル、 5,25…患者回路、
20…絶縁プレート、 20a…平面板、
20b…側面板、 21…切り欠き部、
24−1,24−2…患者回路基板、
29…2次回路基板、 30…2次回路。
1, 11 ... casing (processor device),
3, 27a to 17f ... cable, 5, 25 ... patient circuit,
20 ... Insulating plate, 20a ... Flat plate,
20b ... side plate, 21 ... notch,
24-1, 24-2 ... Patient circuit board,
29 ... Secondary circuit board, 30 ... Secondary circuit.

Claims (2)

画像信号処理を実行するために設けられ、後段の2次回路とは電気的に分離された患者回路を有し、この患者回路を、グランドに接続された筐体内に配置する電子内視鏡装置において、
上記患者回路及びこれに接続されるケーブルと上記筐体との間に、この患者回路及びケーブル−筐体間を電気的に分離するための大きさの絶縁プレートを設けたことを特徴とする電子内視鏡装置。
An electronic endoscope apparatus provided for executing image signal processing, having a patient circuit electrically separated from a secondary circuit in the subsequent stage, and arranging the patient circuit in a casing connected to the ground In
An electronic device comprising an insulating plate having a size for electrically separating the patient circuit and the cable-housing between the patient circuit and the cable connected thereto and the housing. Endoscopic device.
上記絶縁プレートは、プレート本体である平面板の周辺から垂直方向へ側面板を延出させた形状とし、この側面板には、ケーブルを通すための切り欠き部を設けたことを特徴とする請求項1記載の電子内視鏡装置。   The insulating plate has a shape in which a side plate is extended in the vertical direction from the periphery of a flat plate which is a plate body, and the side plate is provided with a notch for passing a cable. Item 2. The electronic endoscope apparatus according to Item 1.
JP2007233722A 2007-09-10 2007-09-10 Electronic endoscopic apparatus Withdrawn JP2009061205A (en)

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JP2007233722A JP2009061205A (en) 2007-09-10 2007-09-10 Electronic endoscopic apparatus

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JP2007233722A JP2009061205A (en) 2007-09-10 2007-09-10 Electronic endoscopic apparatus

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JP2009061205A true JP2009061205A (en) 2009-03-26

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JP2007233722A Withdrawn JP2009061205A (en) 2007-09-10 2007-09-10 Electronic endoscopic apparatus

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