JP6081345B2 - Endoscope - Google Patents

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JP6081345B2
JP6081345B2 JP2013234159A JP2013234159A JP6081345B2 JP 6081345 B2 JP6081345 B2 JP 6081345B2 JP 2013234159 A JP2013234159 A JP 2013234159A JP 2013234159 A JP2013234159 A JP 2013234159A JP 6081345 B2 JP6081345 B2 JP 6081345B2
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insertion portion
fixing member
rotation
rotary dial
knob
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JP2015093052A (en
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究 藤谷
究 藤谷
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Olympus Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00002—Operational features of endoscopes
    • A61B1/00039—Operational features of endoscopes provided with input arrangements for the user
    • A61B1/00042—Operational features of endoscopes provided with input arrangements for the user for mechanical operation

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Description

本発明は、操作部に対して挿入部を軸回りに回動操作可能な内視鏡に関する。   The present invention relates to an endoscope capable of rotating an insertion portion around an axis with respect to an operation portion.

内視鏡に設けられた細長な挿入部を、気管支のように複数の分岐部を有する管腔に挿入する場合、術者は、湾曲部を湾曲させる操作、操作部及び挿入部を捻る操作等を繰り返し行う。しかし、挿入部を目的部位まで正確に且つ短時間で挿入することは容易ではなく、熟練を要する技術の１つであった。   When inserting an elongated insertion portion provided in an endoscope into a lumen having a plurality of branch portions such as a bronchus, an operator performs an operation for bending the bending portion, an operation for twisting the operation portion and the insertion portion, etc. Repeat. However, it is not easy to accurately insert the insertion portion into the target site in a short time, and it is one of skillful techniques.

特許文献１には、湾曲部ごと挿入部を所定の角度の範囲内で回動自在とする内視鏡が示されている。該文献１の内視鏡は、挿入部と湾曲部を基準面の一面側および他面側において略１８０°の範囲内で回動規制する回動機構部を具備している。   Patent Document 1 discloses an endoscope that allows an insertion portion to be freely rotated within a range of a predetermined angle together with a bending portion. The endoscope of Document 1 includes a rotation mechanism that restricts rotation of the insertion portion and the bending portion within a range of approximately 180 ° on one side and the other side of the reference surface.

また、特許文献２には、操作部に対して挿入部が回転操作可能な内視鏡が開示されている。該文献２の内視鏡では、例えば、術者が操作部に対して挿入部が回転操作した際、挿入部の回転位置がニュートラル位置から離れるのに応じて、その回転に要する力量が増大する。したがって、術者は、力量の変化によって、ニュートラル位置に対する回転位置を把握することが可能である。   Patent Document 2 discloses an endoscope in which an insertion unit can be rotated with respect to an operation unit. In the endoscope of the document 2, for example, when the operator rotates the insertion portion with respect to the operation portion, the amount of force required for the rotation increases as the rotation position of the insertion portion moves away from the neutral position. . Therefore, the surgeon can grasp the rotational position with respect to the neutral position by the change in the ability.

そして、特許文献２のように構成された内視鏡の挿入部を気管支に挿入する場合、術者は、モニターの画面に表示される内視鏡画像を観察しつつ、操作部及び挿入部を捩る捩り操作の代わりに、操作部に対して挿入部を軸回りに回転操作する。   And when inserting the insertion part of the endoscope comprised like patent document 2 into a bronchus, an operator observes the endoscope image displayed on the screen of a monitor, and an operation part and an insertion part are Instead of the twisting operation, the insertion portion is rotated around the axis with respect to the operation portion.

術者は、内視鏡画像上で挿入部が９０度回転したことを確認後、湾曲部を例えば上方向に湾曲させて挿入部先端部を主気管支に挿入する。その後、術者は、操作部に対して挿入部を適宜回転させる操作及び湾曲部を適宜湾曲させる操作を繰り返し行って挿入部先端部を目的部位に挿入する。   After confirming that the insertion portion has rotated 90 degrees on the endoscopic image, the surgeon inserts the insertion portion distal end portion into the main bronchus by bending the bending portion, for example, upward. Thereafter, the operator repeatedly performs an operation of appropriately rotating the insertion portion with respect to the operation portion and an operation of appropriately bending the bending portion to insert the distal end portion of the insertion portion into the target site.

該文献２の内視鏡によれば、捩り操作の代わりに操作部に対して挿入部を回転させることによって、操作性が向上し、手技時間が短縮され、術者の負担および患者の負担が大幅に軽減される。   According to the endoscope of Document 2, by rotating the insertion portion with respect to the operation portion instead of the twisting operation, the operability is improved, the procedure time is shortened, and the burden on the operator and the patient is reduced. It is greatly reduced.

特開２００６−１２４６３２号公報JP 2006-124632 A 特開２０１０−２３４０５８号公報JP 2010-234058 A

しかしながら、特許文献２の技術では挿入部の操作部に対するニュートラル位置を把握すること、或いは、力量の変化によってニュートラル位置からのおおよその回転位置を把握すること、は可能であるが術者が希望する角度まで挿入部が回転されたか否かを感覚的に把握することはできなかった。   However, in the technique of Patent Document 2, it is possible for the operator to grasp the neutral position of the insertion portion with respect to the operation portion, or to grasp the approximate rotational position from the neutral position by a change in the ability. It was impossible to grasp sensibly whether or not the insertion portion was rotated to an angle.

本発明は、上記事情に鑑みなされたものであって、挿入部が操作部に対して術者の所望する角度まで回転したことを感覚的に把握して操作することが可能な内視鏡を提供することを目的にしている。   The present invention has been made in view of the above circumstances, and is an endoscope capable of sensuously grasping and operating that the insertion portion has rotated to the angle desired by the operator with respect to the operation portion. The purpose is to provide.

本発明の一態様における内視鏡は、操作部を構成する術者が把持する外装体の内面側に一体に固設された操作部口金パイプと、前記操作部口金パイプの挿入部側に回動可能に設けられ、先端と基端とを有する挿入部の基端部が一体に固設される挿入部口金パイプと、前記操作部口金パイプに対して回動可能に設けられ、指標環が一体に固設されて第１の回転ダイヤルを構成する指標環固定部材と、前記挿入部を前記操作部に対して回動させる際に操作される挿入部回動つまみが一体に固設され、前記第１の回転ダイヤル及び前記操作部口金パイプに対して回動可能に設けられる一方、前記挿入部口金パイプに対して一体に固設される第２の回転ダイヤルを構成する湾曲方向告知部を備える回動つまみ固定部材と、前記第１の回転ダイヤルの指標環固定部材又は前記第２の回転ダイヤルの回動つまみ固定部材の何れか一方に当接する当接部、及び、前記当接部が当接した部材とは異なる他方の部材に固定される固定部を具備する弾性部材と、前記第１の回転ダイヤルの指標環固定部材又は前記第２の回転ダイヤルの回動つまみ固定部材の何れか一方に設けられ、前記挿入部口金パイプの回動に応じて前記弾性部材の当接部の当接状態を変化させる当接状態切替部と、を具備し、前記当接状態切替部は、前記弾性部材の当接部が当接する指標環固定部材の当接面の予め定めた位置又は前記回動つまみ固定部材の当接面の予め定めた位置に設けられ、前記挿入部が前記操作部に対して予め定めた量回動したことをクリック感で告知する貫通孔または穴、或いは、回動に要する力量を変化させて告知する窪み或いは凸部である。 The endoscope according to one aspect of the present invention includes an operation unit base pipe integrally fixed to an inner surface side of an exterior body that is held by an operator constituting the operation unit, and an endoscope that is turned to the insertion unit side of the operation unit base pipe. An insertion portion cap pipe provided to be movable, and a base end portion of an insertion portion having a distal end and a base end is integrally fixed; An indicator ring fixing member that is integrally fixed and constitutes the first rotary dial, and an insertion portion rotation knob that is operated when the insertion portion is rotated with respect to the operation portion are integrally fixed. A curving direction notifying unit that constitutes a second rotating dial that is provided so as to be rotatable with respect to the first rotating dial and the operating portion base pipe, and is integrally fixed to the insertion portion base pipe ; a rotating knob fixed member comprises a finger of the first rotary dial Abutment portion abutting either one of the ring fixing member or the second rotating dial rotates knob fixing member, and fixing portion to which the contact portion is fixed to the other member different from the abutting member According to the rotation of the insertion portion cap pipe, and the elastic member including the index ring fixing member of the first rotating dial or the rotating knob fixing member of the second rotating dial. A contact state switching unit that changes a contact state of the contact portion of the elastic member, and the contact state switching unit is configured to contact the indicator ring fixing member that contacts the contact portion of the elastic member. Provided at a predetermined position on the surface or a predetermined position on the contact surface of the rotation knob fixing member, and notifies the user that the insertion portion has rotated a predetermined amount with respect to the operation portion with a click feeling. Change the amount of force required to rotate through holes or holes. Is a recess or a convex portion to notify Te.

本発明によれば、挿入部が操作部に対して術者の所望する角度まで回転したことを感覚的に把握して操作することが可能な内視鏡を実現できる。   ADVANTAGE OF THE INVENTION According to this invention, the endoscope which can grasp | ascertain and operate sensuously that the insertion part rotated to the angle which an operator desires with respect to the operation part is realizable.

回転つまみを操作部に備える内視鏡を説明するとともにチャンネルチューブの構成を説明する図The figure explaining the structure which comprises a channel tube while explaining the endoscope provided with a rotary knob in an operation part 指標環及び挿入部回動つまみを備える操作部と挿入部との接続部分の構成を説明する長手方向断面図Longitudinal cross-sectional view for explaining the configuration of the connecting portion between the operation portion and the insertion portion provided with the indicator ring and the insertion portion rotation knob 図２のＹ３-Ｙ３線断面図Y3-Y3 line cross-sectional view of FIG. 図２のＹ４-Ｙ４線断面図Y4-Y4 cross-sectional view of FIG. 図２のＹ５-Ｙ５線断面図Sectional view taken along line Y5-Y5 in FIG. 複数の指標環を備える内視鏡の構成例を説明する図The figure explaining the example of composition of an endoscope provided with a plurality of index rings.

以下、図面を参照して本発明の実施の形態を説明する。
図１の（Ａ）に示すように内視鏡１は、挿入部２、操作部３、ユニバーサルコード４を備えて構成されている。
挿入部２は、先端側から順に先端硬性部５、二方向に湾曲可能に構成された湾曲部６、長尺で可撓性を有する可撓管部７を連設して構成されている。可撓管部７の基端部は、挿入部２の基端部を構成する。 Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1A, the endoscope 1 includes an insertion portion 2, an operation portion 3, and a universal cord 4.
The insertion portion 2 is configured by connecting a distal end rigid portion 5, a bending portion 6 configured to be bendable in two directions, and a long and flexible flexible tube portion 7 in order from the distal end side. The proximal end portion of the flexible tube portion 7 constitutes the proximal end portion of the insertion portion 2.

操作部３は、挿入部２の基端部に設けられている。操作部３には、湾曲レバー８、吸引シリンダ９、処置具挿入口１０、各種スイッチ１１が設けられている。そして、操作部３には、指標環２０、挿入部回動つまみ３０が設けられている。   The operation unit 3 is provided at the proximal end of the insertion unit 2. The operation unit 3 is provided with a bending lever 8, a suction cylinder 9, a treatment instrument insertion port 10, and various switches 11. The operation unit 3 is provided with an index ring 20 and an insertion unit rotation knob 30.

スイッチ１１は、フリーズ信号を発生させるスイッチ、あるいは、レリーズ信号を発生させるスイッチ等である。処置具挿入口１０には、図示しない生検鉗子等の内視鏡処置具が挿通される。吸引シリンダ９には、図示しない吸引ボタンが配置される。湾曲レバー８は、湾曲部６を上方向あるいは下方向に湾曲動作させる操作装置である。湾曲レバー８は、ノブ軸８ａを中心に回動操作可能である。   The switch 11 is a switch that generates a freeze signal or a switch that generates a release signal. An endoscope treatment tool such as biopsy forceps (not shown) is inserted into the treatment tool insertion port 10. The suction cylinder 9 is provided with a suction button (not shown). The bending lever 8 is an operating device that causes the bending portion 6 to bend upward or downward. The bending lever 8 can be rotated around the knob shaft 8a.

なお、図１の（Ｂ）に示すように処置具が挿通するチャンネルチューブ１３の貫通孔１３ｈを楕円形状若しくは長孔形状に形成している。そして、チャンネルチューブ１３の貫通孔１３ｈには楕円形空間１４内の長手方向を２つに分割する一対の対向する突起１５が設けてある。この構成によれば、１つの貫通孔１３ｈに破線で示す第１チャンネル１６ａと二点鎖線に示す第２チャンネル１６ｂとが構成される。   As shown in FIG. 1B, the through hole 13h of the channel tube 13 through which the treatment instrument is inserted is formed in an elliptical shape or a long hole shape. A through hole 13 h of the channel tube 13 is provided with a pair of opposing protrusions 15 that divide the longitudinal direction in the elliptical space 14 into two. According to this configuration, the first channel 16a indicated by a broken line and the second channel 16b indicated by a two-dot chain line are formed in one through hole 13h.

この結果、１つのチャンネルチューブ１３の貫通孔１３ｈ内に２つの処置具を挿通して、作業性の向上を図ることができると共に、２つのチャンネルチューブを設ける場合に比べて内視鏡内蔵物の構成を単純にして組立性の向上等を図ることができる。   As a result, it is possible to improve workability by inserting two treatment tools into the through hole 13h of one channel tube 13, and to improve the workability of the built-in endoscope as compared with the case where two channel tubes are provided. The structure can be simplified to improve the assemblability.

なお、突起１５の高さは、挿通される鉗子等の処置具が隣のチャンネル１６ａ、１６ｂに移動することがないように適宜設定される。また、処置具挿入口１０の開口形状及び挿入部先端面に形成される処置具開口の形状及びチャンネル用口金の開口形状は楕円形である。   The height of the protrusion 15 is appropriately set so that a treatment instrument such as a forceps to be inserted does not move to the adjacent channels 16a and 16b. The shape of the treatment instrument insertion port 10, the shape of the treatment tool opening formed on the distal end surface of the insertion portion, and the shape of the opening of the channel base are elliptical.

挿入部回動つまみ３０は、挿入部２と操作部３との接続部分に回動自在に設けられている。挿入部回動つまみ３０を回転させることによって挿入部２が挿入部軸回りに時計方向或いは反時計方向に回転して、操作部３に対して回動する構成になっている。挿入部回動つまみ３０は、環状部外周面から突出する凸部で構成された湾曲方向告知部３１を備えている。   The insertion portion rotation knob 30 is rotatably provided at a connection portion between the insertion portion 2 and the operation portion 3. By rotating the insertion portion rotation knob 30, the insertion portion 2 rotates about the insertion portion axis in the clockwise direction or the counterclockwise direction and rotates with respect to the operation portion 3. The insertion portion rotation knob 30 includes a bending direction notification portion 31 that is configured by a convex portion that protrudes from the outer peripheral surface of the annular portion.

指標環２０も挿入部２と操作部３との接続部分に回動自在に設けられている。指標環２０は、挿入部回動つまみ３０近傍に配置されている。指標環２０は、環状部外周面から突出する凸部で構成された指標部２１を備えている。
なお、符号１２は、折れ止め部材であり、挿入部２の基端部を被覆して座屈を防止する。 The indicator ring 20 is also rotatably provided at a connection portion between the insertion portion 2 and the operation portion 3. The indicator ring 20 is disposed in the vicinity of the insertion portion rotation knob 30. The indicator ring 20 includes an indicator portion 21 configured by a convex portion protruding from the outer peripheral surface of the annular portion.
Reference numeral 12 denotes an anti-bending member that covers the base end portion of the insertion portion 2 and prevents buckling.

ここで、図２−図５を参照して指標環２０及び挿入部回動つまみ３０が回動可能に設けられる挿入部２と操作部３との接続部分の構成を説明する。
図２に示すように操作部３は、外装体である操作部本体３Ｍを備えている。操作部本体３Ｍの内面側にはパイプ形状の操作部口金パイプ３Ｐが一体に固設されている。符号６１は、第１Ｏリングであり、第１Ｏリング６１によって操作部本体３Ｍと操作部口金パイプ３Ｐとの間の水密が図られている。 Here, with reference to FIGS. 2-5, the structure of the connection part of the insertion part 2 and the operation part 3 in which the index ring 20 and the insertion part rotation knob 30 are provided rotatably is demonstrated.
As shown in FIG. 2, the operation unit 3 includes an operation unit main body 3M that is an exterior body. A pipe-shaped operation portion cap pipe 3P is integrally fixed to the inner surface side of the operation portion main body 3M. Reference numeral 61 denotes a first O-ring, and the first O-ring 61 provides watertightness between the operation portion main body 3M and the operation portion base pipe 3P.

図２−図５に示すように操作部口金パイプ３Ｐの挿入部側には挿入部口金パイプ２Ｐの基端部が回動自在に配設されている。即ち、挿入部口金パイプ２Ｐの基端部は、操作部口金パイプ３Ｐの貫通孔３Ｐｈ内に回動自在に配置されている。
図２に示すように挿入部口金パイプ２Ｐの中心軸と操作部口金パイプ３Ｐの中心軸とは同軸であり、内視鏡回転軸１ａである。 As shown in FIGS. 2 to 5, the base end portion of the insertion portion base pipe 2P is rotatably disposed on the insertion portion side of the operation portion base pipe 3P. That is, the base end portion of the insertion portion base pipe 2P is rotatably disposed in the through hole 3Ph of the operation portion base pipe 3P.
As shown in FIG. 2, the central axis of the insertion portion base pipe 2P and the central axis of the operation portion base pipe 3P are coaxial, and are the endoscope rotation shaft 1a.

貫通孔３Ｐｈには段部３Ｐｓが設けられている。一方、挿入部口金パイプ２Ｐにはフランジ部２Ｐｆが設けられている。フランジ部２Ｐｆは、段部３Ｐｓに当接配置される。この結果、挿入具部金パイプ２Ｐは、操作部口金パイプ３Ｐに対して脱落すること無く、回動自在に配設される。   A step 3Ps is provided in the through hole 3Ph. On the other hand, the insertion portion cap pipe 2P is provided with a flange portion 2Pf. The flange portion 2Pf is disposed in contact with the step portion 3Ps. As a result, the insertion tool part metal pipe 2P is rotatably disposed without dropping off from the operation part base pipe 3P.

挿入部口金パイプ２Ｐの挿入部側には挿入部２の基端部である可撓管部７の基端部が一体に固設されている。したがって、挿入部２は、挿入部口金パイプ２Ｐの回転に伴って、軸回りに回転するように構成される。   A base end portion of the flexible tube portion 7 which is a base end portion of the insertion portion 2 is integrally fixed to the insertion portion side of the insertion portion base pipe 2P. Therefore, the insertion portion 2 is configured to rotate around the axis in accordance with the rotation of the insertion portion base pipe 2P.

図２−図４に示すように操作部口金パイプ３Ｐの外周面側には、円環状の指標環固定部材２２が回動自在に配設される。指標環固定部材２２の回動軸は、操作部口金パイプ３Ｐの中心軸に対して同軸となる。符号７１は、位置決め部材である。位置決め部材７１には、該パイプ３Ｐに対して回動自在な指標環固定部材２２の挿入部側側面２２ｓ及び当該パイプ３Ｐに対して摺動自在な挿入部側端面２２ｆが当接する。   As shown in FIGS. 2 to 4, an annular index ring fixing member 22 is rotatably disposed on the outer peripheral surface side of the operation portion base pipe 3 </ b> P. The rotation axis of the indicator ring fixing member 22 is coaxial with the central axis of the operation portion cap pipe 3P. Reference numeral 71 denotes a positioning member. The positioning member 71 is in contact with the insertion portion side surface 22s of the indicator ring fixing member 22 that is rotatable with respect to the pipe 3P and the insertion portion side end surface 22f that is slidable with respect to the pipe 3P.

挿入部側端面２２ｆが当接することによって、指標環固定部材２２の操作部口金パイプ３Ｐに対する長手方向の位置を規定する。一方、挿入部側側面２２ｓが当接することによって、指標環固定部材２２の操作部口金パイプ３Ｐに対する回転角度を規定する。   The position of the indicator ring fixing member 22 in the longitudinal direction with respect to the operation portion base pipe 3P is defined by the contact of the insertion portion side end face 22f. On the other hand, the rotation angle of the indicator ring fixing member 22 with respect to the operation portion base pipe 3P is defined by the contact of the insertion portion side surface 22s.

図２に示すように指標環固定部材２２には、指標環２０の環状部を固設するための周状段部２３が予め定めた位置に設けられている。また、指標環固定部材２２には、水密保持部材である第２Ｏリング６２を配設するための周溝２４が予め定めた位置に設けられている。   As shown in FIG. 2, the indicator ring fixing member 22 is provided with a circumferential step 23 for fixing the annular portion of the indicator ring 20 at a predetermined position. In addition, the index ring fixing member 22 is provided with a circumferential groove 24 for disposing a second O-ring 62 that is a watertight holding member at a predetermined position.

そして、指標環２０を指標環固定部材２２に一体に固設して第１の回転ダイヤル２０Ｄが構成される。指標環固定部材２２は、操作部口金パイプ３Ｐに設けられた位置決め部材７１に当接する。この結果、指標環２０の指標部２１が挿入部回動つまみ３０の湾曲方向告知部３１に対して挿入部方向に近接して隣設される。   Then, the index ring 20 is integrally fixed to the index ring fixing member 22 to constitute the first rotary dial 20D. The indicator ring fixing member 22 abuts on a positioning member 71 provided on the operation portion base pipe 3P. As a result, the indicator portion 21 of the indicator ring 20 is adjacent to the bending direction notification portion 31 of the insertion portion rotation knob 30 in the vicinity of the insertion portion.

図２−図５に示すように挿入部口金パイプ２Ｐには、円環状の回動つまみ固定部材３２が配置される。回動つまみ固定部材３２は、固定ネジ３３によって挿入部口金パイプ２Ｐに一体に固設される。回動つまみ固定部材３２の回転軸は、挿入部口金パイプ２Ｐの中心軸に一致する。回動つまみ固定部材３２は、挿入部回動つまみ３０の取付穴３０ｈ内に配置されて一体に固定される。   As shown in FIGS. 2 to 5, an annular rotation knob fixing member 32 is disposed on the insertion portion base pipe 2 </ b> P. The rotary knob fixing member 32 is integrally fixed to the insertion portion base pipe 2P by a fixing screw 33. The rotation axis of the rotary knob fixing member 32 coincides with the central axis of the insertion portion cap pipe 2P. The rotation knob fixing member 32 is disposed in the mounting hole 30h of the insertion portion rotation knob 30 and is fixed integrally.

具体的に、挿入部回動つまみ３０は、取付穴３０ｈを有している。取付穴３０ｈの断面形状は、略Ｄ字形状であり、図３−図５に示す回り止め平面３０ｐが設けられている。一方、回動つまみ固定部材３２の外周面には、回り止め平面３０ｐに当接する平面３２ｐが設けられている。   Specifically, the insertion portion rotation knob 30 has a mounting hole 30h. The cross-sectional shape of the mounting hole 30h is substantially D-shaped, and a detent flat surface 30p shown in FIGS. 3 to 5 is provided. On the other hand, on the outer peripheral surface of the rotary knob fixing member 32, a flat surface 32p that comes into contact with the detent flat surface 30p is provided.

この結果、挿入部回動つまみ３０の取付穴３０ｈに回動つまみ固定部材３２を配置した状態において、挿入部回動つまみ３０が回動つまみ固定部材３２に対して回転することが防止される。挿入部回動つまみ３０と回動つまみ固定部材３２とは接着、あるいは、螺合等によって一体に固定される。   As a result, in a state where the rotation knob fixing member 32 is disposed in the mounting hole 30 h of the insertion portion rotation knob 30, the insertion portion rotation knob 30 is prevented from rotating with respect to the rotation knob fixing member 32. The insertion portion rotation knob 30 and the rotation knob fixing member 32 are integrally fixed by bonding or screwing.

そして、挿入部回動つまみ３０を口金パイプ２Ｐに一体固定される回動つまみ固定部材３２に一体に固設して第２の回転ダイヤル３０Ｄが構成される。この構成において、挿入部口金パイプ２Ｐの中心軸である挿入部２の長手軸と回動つまみ固定部材３２の回動軸とが同軸に配設される。また、指標環固定部材２２の回動軸と回動つまみ固定部材３２の回動軸とが同軸に配設される。   Then, the insertion portion turning knob 30 is integrally fixed to a turning knob fixing member 32 that is integrally fixed to the base pipe 2P to constitute a second rotating dial 30D. In this configuration, the longitudinal axis of the insertion portion 2 that is the central axis of the insertion portion base pipe 2P and the rotation axis of the rotation knob fixing member 32 are arranged coaxially. Further, the rotation shaft of the indicator ring fixing member 22 and the rotation shaft of the rotation knob fixing member 32 are arranged coaxially.

また、挿入部口金パイプ２Ｐに螺合固定される回動つまみ固定部材３２に一体に固設される挿入部回動つまみ３０が備える湾曲方向告知部３１の突出方向は、湾曲部６の上湾曲方向に一致している。   Further, the protruding direction of the bending direction notification section 31 provided in the insertion section rotation knob 30 fixed integrally with the rotation knob fixing member 32 screwed and fixed to the insertion section base pipe 2P is the upper curve of the bending section 6. Match the direction.

図２に示すように挿入部回動つまみ３０及び回動つまみ固定部材３２は、指標環固定部材２２に対して回動自在に配置されている。第２Ｏリング６２は、挿入部回動つまみ３０の環状部内周面と指標環固定部材２２の外周面との水密を確保する。   As shown in FIG. 2, the insertion portion rotation knob 30 and the rotation knob fixing member 32 are rotatably arranged with respect to the indicator ring fixing member 22. The second O-ring 62 ensures watertightness between the inner circumferential surface of the annular portion of the insertion portion turning knob 30 and the outer circumferential surface of the indicator ring fixing member 22.

図２及び図５に示す符号３４は、回動角度規制ピンである。回動角度規制ピン３４は、回動つまみ固定部材３２に螺合配置される。回動角度規制ピン３４の配置位置も湾曲方向告知部３１の突出方向と同様に湾曲部６の上湾曲方向に一致されている。   Reference numeral 34 shown in FIGS. 2 and 5 is a rotation angle regulating pin. The rotation angle restriction pin 34 is screwed to the rotation knob fixing member 32. The arrangement position of the rotation angle regulating pin 34 is also matched with the upper bending direction of the bending portion 6 in the same manner as the protruding direction of the bending direction notification portion 31.

そして、回動角度規制ピン３４は、操作部口金パイプ３Ｐに形成されている規制突起３Ｐｃの一方の側面に当接して挿入部２の操作部３に対する軸回りの時計回りの回転が制限され、規制突起３Ｐｃの他方の側面に当接して挿入部２の操作部３に対する軸回りの反時計回りの回転が制限されるようになっている。   Then, the rotation angle restriction pin 34 is in contact with one side surface of the restriction projection 3Pc formed on the operation portion base pipe 3P, and the clockwise rotation around the axis with respect to the operation portion 3 of the insertion portion 2 is restricted. Abutting against the other side surface of the restricting projection 3Pc, the counterclockwise rotation around the axis with respect to the operation portion 3 of the insertion portion 2 is restricted.

なお、図２の符号６３は、第３Ｏリングであり、操作部口金パイプ３Ｐと連結部材２５との間の水密を確保する。符号６４は、第４Ｏリングであり、連結部材２５と指標環固定部材２２との間の水密を確保する。符号６５は、第５Ｏリングであり、回動つまみ固定部材３２と挿入部口金パイプ２Ｐとの間の水密を確保する。
連結部材２５は、内周面に雌ねじを有し、操作部口金パイプ３Ｐの雄ねじに螺合する構成になっている。 In addition, the code | symbol 63 of FIG. 2 is a 3rd O-ring, and ensures the watertightness between the operation part nozzle | cap | die 3P and the connection member 25. FIG. Reference numeral 64 denotes a fourth O-ring that ensures watertightness between the connecting member 25 and the indicator ring fixing member 22. Reference numeral 65 denotes a fifth O-ring that ensures watertightness between the rotary knob fixing member 32 and the insertion portion base pipe 2P.
The connecting member 25 has a female screw on the inner peripheral surface, and is configured to be screwed into the male screw of the operation portion cap pipe 3P.

また、符号７２は、環状弾性部材であり、指標環２０を弾性保持して、操作部本体３Ｍと指標環固定部材２２とによる挟持状態を安定的に保持する。
また、符号７３は樹脂製の係合保持部材である。係合保持部材７３は、挿入部口金パイプ２Ｐの予め定めた位置に固設される。このとき、係合保持部材７３が操作部口金パイプ３Ｐの内周面に当接することによってスムーズに回転する。 Reference numeral 72 denotes an annular elastic member that elastically holds the index ring 20 and stably holds the clamping state between the operation portion main body 3M and the index ring fixing member 22.
Reference numeral 73 denotes a resin engagement holding member. The engagement holding member 73 is fixed at a predetermined position of the insertion portion base pipe 2P. At this time, the engagement holding member 73 rotates smoothly by coming into contact with the inner peripheral surface of the operation portion base pipe 3P.

符号７４は、固定調整リングである。固定調整リング７４は、挿入部口金パイプ２Ｐの外周に形成された雄ねじ部に螺合配置される。固定調整リング７４は、締め付け状態を微調整して、挿入部口金パイプ２Ｐのフランジ部２Ｐｆと操作部口金パイプ３Ｐの段部３Ｐｓとの当接状態を最適に設定する。   Reference numeral 74 denotes a fixed adjustment ring. The fixing adjustment ring 74 is screwed and arranged in a male screw portion formed on the outer periphery of the insertion portion base pipe 2P. The fixing adjustment ring 74 finely adjusts the tightening state to optimally set the contact state between the flange portion 2Pf of the insertion portion base pipe 2P and the step portion 3Ps of the operation portion base pipe 3P.

上述した構成によれば、挿入部回動つまみ３０は、操作部本体３Ｍ、指標環固定部材２２及び操作部口金パイプ３Ｐに対して回動する。そして、挿入部回動つまみ３０を回動操作することにより、回動つまみ固定部材３２、挿入部口金パイプ２Ｐを介して挿入部２が内視鏡回転軸１ａの軸回りに回動する。   According to the configuration described above, the insertion portion rotation knob 30 rotates with respect to the operation portion main body 3M, the indicator ring fixing member 22, and the operation portion base pipe 3P. Then, by rotating the insertion portion rotation knob 30, the insertion portion 2 rotates about the endoscope rotation shaft 1a via the rotation knob fixing member 32 and the insertion portion base pipe 2P.

本実施形態において、第２Ｏリング６２、第４Ｏリング６４及び管状弾性部材７２は、第１の回転ダイヤル２０Ｄの回転操作力量を予め定めた力量に設定する第１摩擦力調整部材である。一方、第２Ｏリング６２、係合保持部材７３、及び固定調整リング７４は、第２の回転ダイヤル３０Ｄの回転操作力量を予め定めた力量に設定する第２摩擦力調整部材である。
そして、本実施形態においては、挿入部回動つまみ３０を回転させる際の回転操作力量が、指標環２０を回転させる際の回転操作力量より予め小さく設定してある。 In the present embodiment, the second O-ring 62, the fourth O-ring 64, and the tubular elastic member 72 are first frictional force adjusting members that set the rotational operation force amount of the first rotary dial 20D to a predetermined force amount. On the other hand, the second O-ring 62, the engagement holding member 73, and the fixed adjustment ring 74 are second frictional force adjusting members that set the rotational operation force amount of the second rotary dial 30D to a predetermined force amount.
In this embodiment, the rotational operation force amount when rotating the insertion portion rotation knob 30 is set in advance smaller than the rotational operation force amount when rotating the indicator ring 20.

図３に示すように指標環固定部材２２の円形外周面と、回動つまみ固定部材３２の円形内周面との間には空間Ｓが形成されている。
空間Ｓには板バネ５０が固設される。 As shown in FIG. 3, a space S is formed between the circular outer peripheral surface of the indicator ring fixing member 22 and the circular inner peripheral surface of the rotary knob fixing member 32.
A leaf spring 50 is fixed in the space S.

板バネ５０は、弾性部材であって、予め定めた形状で予め定めた弾性力を有している。板バネ５０は、固定部である取付部５１と、一対のアーム部５２とを有している。それぞれのアーム部５２の端部には当接部を構成する摺動突起５３が設けられている。   The leaf spring 50 is an elastic member and has a predetermined elastic force in a predetermined shape. The leaf spring 50 has an attachment portion 51 that is a fixed portion and a pair of arm portions 52. A sliding projection 53 that constitutes a contact portion is provided at the end of each arm portion 52.

一対のアーム部５２は、取付部５１を挟んで設けられている。摺動突起５３を設けた板バネ５０は、取付部５１の中央部を挟んで左右対称形状である。
摺動突起５３の外表面は、曲面形状であって、回動つまみ固定部材３２の内周面である当接面３２ｆに当接する当接部である。 The pair of arm portions 52 are provided with the attachment portion 51 interposed therebetween. The leaf spring 50 provided with the sliding projection 53 is symmetrical with respect to the center portion of the attachment portion 51.
The outer surface of the sliding projection 53 has a curved surface shape and is a contact portion that contacts the contact surface 32 f that is the inner peripheral surface of the rotary knob fixing member 32.

板バネ５０は、例えば、指標環固定部材２２の外周面に固設される。具体的に、板バネ５０の取付部５１は、指標環固定部材２２の外周面の予め定めた位置に形成されている周方向位置決め溝（不図示）内に配置された状態で、例えばバネ固定ネジ５４によって一体に固設される。   The leaf spring 50 is fixed to the outer peripheral surface of the indicator ring fixing member 22, for example. Specifically, the attachment portion 51 of the leaf spring 50 is disposed in a circumferential positioning groove (not shown) formed at a predetermined position on the outer peripheral surface of the indicator ring fixing member 22, for example, spring fixing The screws 54 are integrally fixed.

回動つまみ固定部材３２の予め定めた位置には内周面と外周面とを貫く一対の貫通孔３２ｈが形成されている。貫通孔３２ｈは、当接状態切替部であって、貫通孔３２ｈ内には摺動突起５３の外周曲面５３ｆの一部が落ち込むように構成されている。
すなわち、貫通孔３２ｈの寸法は、摺動突起５３の端部が予め定めた量落ち込むように設定されている。 A pair of through holes 32h are formed at predetermined positions of the rotary knob fixing member 32 so as to penetrate the inner peripheral surface and the outer peripheral surface. The through hole 32h is a contact state switching portion, and is configured such that a part of the outer peripheral curved surface 53f of the sliding projection 53 falls into the through hole 32h.
That is, the dimension of the through hole 32h is set so that the end of the sliding protrusion 53 falls by a predetermined amount.

なお、当接状態切替部として貫通孔３２ｈを形成する代わりに、径寸法及び深さ寸法で予め定めた形状に設定した窪み或いは穴、または、突出量及び突出形状を予め定めた形状に設定した凸部を設けて回動に要する力量を変化させるようにしてもよい。   In addition, instead of forming the through hole 32h as the contact state switching portion, a depression or a hole set in a predetermined shape with a diameter dimension and a depth dimension, or a protrusion amount and a protrusion shape are set in a predetermined shape. A convex portion may be provided to change the amount of force required for rotation.

ここで、操作部３に対して回転する挿入部２の挿入部初期状態位置である中立位置について説明する。
操作部３に対して湾曲レバー８が配設されている側を正面側、逆側を背面側とする。そして、挿入部２が直線状態において、湾曲レバー８をノブ軸８ａを中心に挿入部２の先端方向から基端方向へ回転操作して、湾曲部６が背面側から正面側へと湾曲される場合、挿入部２が操作部３に対して中立位置にあるとする。 Here, the neutral position that is the insertion portion initial state position of the insertion portion 2 that rotates relative to the operation portion 3 will be described.
The side on which the bending lever 8 is disposed with respect to the operation unit 3 is the front side, and the opposite side is the back side. When the insertion portion 2 is in a straight line state, the bending lever 8 is rotated from the distal end direction to the proximal end direction about the knob shaft 8a, so that the bending portion 6 is bent from the back side to the front side. In this case, it is assumed that the insertion unit 2 is in a neutral position with respect to the operation unit 3.

挿入部２が操作部３に対して回転されていない中立位置に位置するとき、図３−図５に示すように挿入部回動つまみ３０の湾曲方向告知部３１の中心線３１Ｌと指標環２０の指標部２１の中心線２１Ｌとが重なった位置関係になる。このとき、湾曲方向告知部３１と指標部２１とが内視鏡回転軸１ａの軸方向に対して一列に配列される。
この位置関係を挿入部初期状態位置（以下、初期位置と記載する）という。 When the insertion portion 2 is located at a neutral position that is not rotated with respect to the operation portion 3, the center line 31L of the bending direction notification portion 31 of the insertion portion rotation knob 30 and the index ring 20 are shown in FIGS. The center line 21L of the index part 21 is in a positional relationship overlapping. At this time, the bending direction notification unit 31 and the index unit 21 are arranged in a line with respect to the axial direction of the endoscope rotating shaft 1a.
This positional relationship is referred to as an insertion portion initial state position (hereinafter referred to as an initial position).

初期位置において、図３に示すように板バネ５０の一対の摺動突起５３の外周曲面５３ｆの一部が、アーム部５２の有する弾性力によって、それぞれ一対の貫通孔３２ｈ内に落ち込み配置されて係合状態になる。   In the initial position, as shown in FIG. 3, a part of the outer peripheral curved surface 53 f of the pair of sliding protrusions 53 of the leaf spring 50 is disposed so as to fall into the pair of through holes 32 h by the elastic force of the arm portion 52. It will be in an engaged state.

係合状態の指標環２０の係合状態は、アーム部５２の有する弾性力と上述した第１の回転ダイヤル２０Ｄの回転操作力量とを合わせた力量に抗する矢印Ｙ３Ａ方向への回転力、或いは、矢印Ｙ３Ｂ方向への回転力が働くことによって解除される。解除後、指標環２０は、予め設定された回転操作力量で回転移動される。   The engaged state of the indicator ring 20 in the engaged state is the rotational force in the direction of the arrow Y3A against the amount of force obtained by combining the elastic force of the arm portion 52 and the rotational operation force amount of the first rotary dial 20D described above, or , The rotation is released in the direction of the arrow Y3B. After the release, the indicator ring 20 is rotationally moved with a preset rotational operation force amount.

初期位置において、指標環２０は、図４の矢印Ｙ３Ａ、矢印Ｙ３Ｂに示すように指標環固定部材２２の挿入部側側面２２ｓが位置決め部材７１の位置決め面７１ｓに当接するまで回動自在である。また、初期位置において、挿入部回動つまみ３０も、図５の矢印Ｙ３Ａ、矢印Ｙ３Ｂに示すように回動角度規制ピン３４の外周面が規制突起３Ｐｃの側面３Ｐｃｓに当接するまで回動自在である。   In the initial position, the indicator ring 20 is rotatable until the insertion portion side surface 22s of the indicator ring fixing member 22 contacts the positioning surface 71s of the positioning member 71 as indicated by arrows Y3A and Y3B in FIG. Further, in the initial position, the insertion portion rotation knob 30 is also rotatable until the outer peripheral surface of the rotation angle restricting pin 34 comes into contact with the side surface 3Pcs of the restricting protrusion 3Pc as shown by arrows Y3A and Y3B in FIG. is there.

なお、本実施形態において、指標環２０は、例えば矢印Ｙ３Ａ方向および矢印Ｙ３Ｂ方向にそれぞれ１２０度ずつ回転し、挿入部回動つまみ３０は矢印Ｙ３Ａ方向および矢印Ｙ３Ｂ方向にそれぞれ１３５度ずつ回転する構成になっている。   In the present embodiment, for example, the indicator ring 20 is rotated 120 degrees in each of the arrow Y3A direction and the arrow Y3B direction, and the insertion portion rotating knob 30 is rotated 135 degrees in each of the arrow Y3A direction and the arrow Y3B direction. It has become.

上述のように構成されている内視鏡１の作用を説明する。
気管支の検査を行うに当たって内視鏡１を用意する。術者は、指標環２０及び挿入部回動つまみ３０が初期位置に配置されているか否かを確認する。 The operation of the endoscope 1 configured as described above will be described.
The endoscope 1 is prepared for the bronchial examination. The surgeon confirms whether or not the index ring 20 and the insertion portion rotation knob 30 are arranged at the initial positions.

術者は、検査前に指標環２０を所望する方向に所望する角度回転させる。その後、検査中に素早く挿入部回動つまみ３０を指標環２０と同じ角度まで回転させる。 具体的に、術者は、指標環２０の係合状態を解除し、その後、例えば、指標環２０を略９０度、Ｙ３Ａ方向に回転させる。   The surgeon rotates the indicator ring 20 in a desired direction in the desired direction before the examination. Thereafter, the insertion portion turning knob 30 is quickly rotated to the same angle as the indicator ring 20 during the inspection. Specifically, the surgeon releases the engaged state of the index ring 20, and then rotates the index ring 20 in the Y3A direction by approximately 90 degrees, for example.

その後、術者は、挿入部２を操作部３に対して回転させるために挿入部回動つまみ３０の回転操作を開始する。すると、初期位置に位置していた挿入部２が回転され、挿入部回動つまみ３０の回転に伴って挿入部２が同方向に回転されていく。   Thereafter, the surgeon starts the rotation operation of the insertion portion rotation knob 30 in order to rotate the insertion portion 2 with respect to the operation portion 3. Then, the insertion part 2 located at the initial position is rotated, and the insertion part 2 is rotated in the same direction as the insertion part rotation knob 30 is rotated.

そして、術者が挿入部回動つまみ３０の回転操作を継続することにより、再び、摺動突起５３が貫通孔３２ｈに落ち込んでクリック感が生じる。術者は、クリック感を得ることによって、挿入部２が、自らが設定した、９０度回転したことを把握できる。   Then, when the surgeon continues the rotation operation of the insertion portion rotation knob 30, the sliding protrusion 53 falls again into the through hole 32h and a click feeling is generated. By obtaining a click feeling, the surgeon can grasp that the insertion portion 2 has been rotated by 90 degrees set by the surgeon.

ここで、術者は、内視鏡画像を観察して挿入部２の回転量を確認し、その後、湾曲部６を湾曲させる操作を行って、挿入部２を目的の主気管支内に導入する。その後、術者は、内視鏡画像を観察しつつ挿入部２を目的部位に向けて挿入していく。   Here, the surgeon observes the endoscopic image to confirm the amount of rotation of the insertion portion 2, and then performs an operation of bending the bending portion 6 to introduce the insertion portion 2 into the target main bronchus. . Thereafter, the surgeon inserts the insertion portion 2 toward the target site while observing the endoscopic image.

このように、指標環２０及び挿入部回動つまみ３０を操作部３に対して回動自在に構成すると共に、板バネ５０の摺動突起５３が貫通孔３２ｈに落ち込み配置されることによって指標環２０と挿入部回動つまみ３０とが係合状態になる構成にしている。   In this manner, the index ring 20 and the insertion portion rotation knob 30 are configured to be rotatable with respect to the operation portion 3, and the slide protrusion 53 of the leaf spring 50 is disposed so as to fall into the through hole 32h. 20 and the insertion portion rotation knob 30 are in an engaged state.

この結果、初期位置において、湾曲方向告知部３１に対して指標部２１を術者の所望する角度まで予め回転移動させておく。この状態において、術者は、挿入部回動つまみ３０を操作して挿入部２を操作部３に対して回転させる。回転操作が継続されている状態において、摺動突起５３が貫通孔３２ｈに落ち込むことによってクリック感が生じる。術者は、クリック感を得ることによって、挿入部２が予め設定した回転角度に到達したことを把握することができる。
したがって、内視鏡１を操作する術者は、挿入部２を自らが設定した回転角度まで速やかに回転移動させられる。 As a result, at the initial position, the indicator unit 21 is rotated in advance with respect to the bending direction notification unit 31 to an angle desired by the operator. In this state, the surgeon operates the insertion portion rotation knob 30 to rotate the insertion portion 2 with respect to the operation portion 3. In a state where the rotation operation is continued, a click feeling is generated when the sliding protrusion 53 falls into the through hole 32h. The surgeon can grasp that the insertion portion 2 has reached a preset rotation angle by obtaining a click feeling.
Therefore, the operator who operates the endoscope 1 can quickly rotate the insertion portion 2 to the rotation angle set by the operator.

また、挿入部回動つまみ３０を回転させる際の回転操作力量を、指標環２０を回転させる際の回転操作力量より小さく設定したことによって、頻繁に操作する挿入部回動つまみ３０をスムーズに操作して挿入部２を操作部３に対して回動操作することができる。
言い換えれば、指標環２０を回転させる際の回転操作力量を挿入部回動つまみ３０を回転させる際の回転操作力量より大きく設定したことによって、予め定めた位置まで回転移動させた指標環２０が挿入部回動つまみ３０の回転操作中に指が触れること等によって移動することを確実に防止することができる。
なお、指標部２１と湾曲方向告知部３１とをそれぞれ異なる色で着色するようにしてよい。 Further, since the rotational operation force amount when rotating the insertion portion rotation knob 30 is set to be smaller than the rotation operation force amount when rotating the indicator ring 20, the insertion portion rotation knob 30 that is frequently operated is smoothly operated. Thus, the insertion portion 2 can be rotated with respect to the operation portion 3.
In other words, the index ring 20 that has been rotationally moved to a predetermined position is inserted by setting the rotational operation force amount when rotating the index ring 20 to be larger than the rotational operation force amount when rotating the insertion portion rotation knob 30. It is possible to reliably prevent the finger from being moved by touching the rotary knob 30 during the rotation operation.
The indicator unit 21 and the bending direction notification unit 31 may be colored with different colors.

この構成によれば、内視鏡１を検査に使用する前に、目視にて色の異なる指標部２１と湾曲方向告知部３１とが一列に配列されているか否かを視認して、挿入部２が初期位置に位置しているか否かの判定を容易に行うことができる。   According to this configuration, before the endoscope 1 is used for the inspection, it is visually confirmed whether or not the indicator portions 21 and the bending direction notification portions 31 having different colors are arranged in a row, and the insertion portion It is possible to easily determine whether 2 is located at the initial position.

そして、指標部２１及び湾曲方向告知部３１を着色する場合、操作部３と異なる色、挿入部２と異なる色に着色する。
なお、着色すること無く第１の回転ダイヤル２０Ｄを二色成形によって形成して指標部２１の色を指標環２０の色とは異なる色に設定する、或いは、第２回転ダイヤル３０Ｄを二色成形によって形成して湾曲方向告知部３１の色を挿入部回動つまみ３０の色とは異なる色に設定するようにしてもよい。 When the indicator unit 21 and the bending direction notification unit 31 are colored, the indicator unit 21 and the bending direction notification unit 31 are colored differently from the operation unit 3 and different from the insertion unit 2.
The first rotary dial 20D is formed by two-color molding without coloring, and the color of the indicator portion 21 is set to a color different from the color of the indicator ring 20, or the second rotary dial 30D is two-color molded. The color of the bending direction notification section 31 may be set to a color different from the color of the insertion section rotation knob 30.

また、上述した実施形態においては、板バネ５０を指標環固定部材２２の外周面に固設するとしている。しかしながら、板バネ５０を回動つまみ固定部材３２の内周面に固設して、指標環固定部材２２の外周面に摺動突起５３の外周曲面５３ｆの一部が落ち込む貫通孔、窪み或いは穴、または凸部を設ける構成であってもよい。   In the above-described embodiment, the leaf spring 50 is fixed to the outer peripheral surface of the indicator ring fixing member 22. However, the leaf spring 50 is fixed to the inner peripheral surface of the rotary knob fixing member 32 so that a part of the outer peripheral curved surface 53f of the sliding projection 53 falls on the outer peripheral surface of the indicator ring fixing member 22. Or the structure which provides a convex part may be sufficient.

この構成によれば、術者は、クリック感を得ることによって、或いは、回動に要する力量の変化によって挿入部２が、自らが設定した、角度、回転したことを把握することができる。   According to this configuration, the surgeon can grasp that the insertion portion 2 has rotated by the angle set by the surgeon by obtaining a click feeling or by changing the amount of force required for rotation.

さらに、図６に示すように第１指標部２１ａを有する第１指標環２０Ａ、第２指標部２１ｂを有する第２指標環２０Ｂ、第３指標部２１ｃを有する第３指標環２０Ｃを内視鏡回転軸１ａの軸方向に対して一列に配列するようにしてもよい。   Further, as shown in FIG. 6, the first index ring 20A having the first index part 21a, the second index ring 20B having the second index part 21b, and the third index ring 20C having the third index part 21c are endoscopes. You may make it arrange in a line with respect to the axial direction of the rotating shaft 1a.

本実施形態において、第１指標環２０Ａの第１指標部２１ａは、第１指標環固定部材２２ａに一体に設けられ、第２指標環２０Ｂの第２指標部２１ｂは第２指標環固定部材２２ｂに一体に設けられ、第３指標環２０Ｃの第３指標部２１ｃは、第３指標環固定部材２２ｃに一体に設けられている。   In the present embodiment, the first indicator portion 21a of the first indicator ring 20A is provided integrally with the first indicator ring fixing member 22a, and the second indicator portion 21b of the second indicator ring 20B is the second indicator ring fixing member 22b. The third indicator portion 21c of the third indicator ring 20C is provided integrally with the third indicator ring fixing member 22c.

そして、第１指標環固定部材２２ａは、操作部口金パイプ３Ｐの外周面側には回動自在に配設されている。第２指標環固定部材２２ｂは、第１指標環固定部材２２ａの外周面側には回動自在に配設されている。第３指標環固定部材２２ｃは、第２指標環固定部材２２ｂの外周面側には回動自在に配設されている。   The first index ring fixing member 22a is rotatably disposed on the outer peripheral surface side of the operation portion base pipe 3P. The second index ring fixing member 22b is rotatably disposed on the outer peripheral surface side of the first index ring fixing member 22a. The third index ring fixing member 22c is rotatably disposed on the outer peripheral surface side of the second index ring fixing member 22b.

本実施形態において、第１指標環固定部材２２ａにはアーム部５２ａを有する第１板バネ（不図示）が固設され、第２指標環固定部材２２ｂにはアーム部５２ｂを有する第２板バネ（不図示）が固設され、第３指標環固定部材２２ｃにはアーム部５２ｃを有する第３板バネ（不図示）が固設されている。   In the present embodiment, a first leaf spring (not shown) having an arm portion 52a is fixed to the first indicator ring fixing member 22a, and a second leaf spring having an arm portion 52b is fixed to the second indicator ring fixing member 22b. (Not shown) is fixed, and a third leaf spring (not shown) having an arm portion 52c is fixed to the third indicator ring fixing member 22c.

そして、本実施形態において、第１板バネの摺動突起の当接部は、回動つまみ固定部材３２Ａの内周面である第１当接面３２ｆ１に当接し、第２板バネの摺動突起の当接部は、回動つまみ固定部材３２Ａの内周面である第２当接面３２ｆ２に当接し、第３板バネの摺動突起の当接部は、回動つまみ固定部材３２Ａの内周面である第３当接面３２ｆ３に当接する。   In this embodiment, the abutting portion of the sliding protrusion of the first leaf spring abuts on the first abutting surface 32f1, which is the inner peripheral surface of the rotary knob fixing member 32A, and the sliding of the second leaf spring. The abutting portion of the protrusion abuts on the second abutting surface 32f2 that is the inner peripheral surface of the rotating knob fixing member 32A, and the abutting portion of the sliding protrusion of the third leaf spring is on the rotating knob fixing member 32A. It abuts on the third abutment surface 32f3 that is the inner circumferential surface.

符号６４ａ、６４ｂ、６４ｃは、第４Ｏリングであり、連結部材２５と指標環固定部材２２との間の水密を確保する水密部材であると共に、各指標環２０Ａ、２０Ｂ、２０Ｃの回転操作力量を所望する力量に設定する第１摩擦力調整部材である。
その他の構成は上述した実施形態と同様であり、同部材には同符号を付して説明を省略する。 Reference numerals 64a, 64b and 64c are fourth O-rings which are watertight members for ensuring watertightness between the connecting member 25 and the indicator ring fixing member 22, and the rotational operation force amounts of the indicator rings 20A, 20B and 20C. The first frictional force adjusting member is set to a desired amount of force.
Other configurations are the same as those of the above-described embodiment, and the same members are denoted by the same reference numerals and description thereof is omitted.

この構成によれば、術者が複数の指標環２０Ａ、２０Ｂ、２０Ｃのうち、例えば第１指標環２０Ａを予め角度θ１回転移動させ、第２指標環２０Ｂを予め角度θ２に回転移動させ、第３指標環２０Ｃを初期位置に配置させておくことによって、術者は、挿入部２が操作部３に対して角度θ１回転移動したこと、或いは、角度θ２回転移動したこと、或いは、初期位置に復帰したことをクリック感を得て把握することができる。   According to this configuration, the operator, for example, of the plurality of indicator rings 20A, 20B, and 20C, for example, first moves the first indicator ring 20A by rotating the angle θ1 in advance, and rotates the second indicator ring 20B by rotating to the angle θ2 in advance. By placing the three index ring 20C at the initial position, the surgeon can move the insertion portion 2 by the angle θ1 rotation relative to the operation portion 3, or the angle θ2 rotation movement, or the initial position. You can get a sense of clicking and get back.

なお、複数の指標環の数を３つとしているが、複数の指標環の数は３つに限定されるものでは無く、２つであっても、３つ以上であってもよい。
また、複数の各指標環に設けられている指標の色を異なる色とすることによって操作する指標環の区別を容易に行うことができると共に、上述と同様の作用及び効果を得ることができる。 Although the number of the plurality of index rings is three, the number of the plurality of index rings is not limited to three, and may be two or three or more.
In addition, it is possible to easily distinguish the indicator rings to be operated by changing the color of the indicators provided in each of the indicator rings to different colors, and it is possible to obtain the same operations and effects as described above.

尚、本発明は、以上述べた実施形態のみに限定されるものではなく、発明の要旨を逸脱しない範囲で種々変形実施可能である。   The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention.

１…内視鏡 １ａ…内視鏡回転軸 ２…挿入部 ２Ｐ…挿入部口金パイプ
２Ｐｆ…フランジ部 ３…操作部 ３Ｍ…操作部本体 ３Ｐ…操作部口金パイプ
３Ｐ…パイプ ３Ｐ…操作部口金パイプ ３Ｐｃ…規制突起 ３Ｐｃｓ…側面
３Ｐｈ…貫通孔 ３Ｐｓ…段部 ４…ユニバーサルコード ５…先端硬性部
６…湾曲部 ７…可撓管部 ８…湾曲レバー ８ａ…ノブ軸 ９…吸引シリンダ
１０…処置具挿入口 １１…スイッチ １２…折れ止め部材 １３…チャンネルチューブ
１３ｈ…貫通孔 １４…楕円形空間 １５…突起 １６ａ…第１チャンネル
１６ｂ…第２チャンネル ２０…指標環 ２０Ｄ…第１の回転ダイヤル ２１…指標部
２１Ｌ…中心線 ２２…指標環固定部材 ２２ｆ…挿入部側端面 ２２ｓ…挿入部側側面
２３…周状段部 ２４…周溝 ２５…連結部材 ３０Ｄ…第２の回転ダイヤル
３０ｈ…取付穴 ３０ｐ…回り止め平面 ３１…湾曲方向告知部 ３１Ｌ…中心線
３２…固定部材 ３２ｆ…当接面 ３２ｈ…貫通孔 ３２ｐ…平面 ３３…固定ネジ
３４…回動角度規制ピン ５０…板バネ ５１…取付部 ５２…アーム部
５３…摺動突起 ５３ｆ…外周曲面 ５４…バネ固定ネジ ７１…位置決め部材
７１ｓ…位置決め面 ７２…管状弾性部材 ７３…係合保持部材 ７４…固定調整リング DESCRIPTION OF SYMBOLS 1 ... Endoscope 1a ... Endoscope rotating shaft 2 ... Insertion part 2P ... Insertion part cap pipe
2Pf ... Flange part 3 ... Operation part 3M ... Operation part body 3P ... Operation part base pipe
3P ... Pipe 3P ... Operation part cap pipe 3Pc ... Restriction protrusion 3Pcs ... Side face 3Ph ... Through-hole 3Ps ... Step part 4 ... Universal cord 5 ... Hard end part 6 ... Bending part 7 ... Flexible pipe part 8 ... Bending lever 8a ... Knob Shaft 9 ... Suction cylinder 10 ... Treatment instrument insertion port 11 ... Switch 12 ... Anti-bending member 13 ... Channel tube 13h ... Through hole 14 ... Elliptical space 15 ... Protrusion 16a ... First channel
16b ... second channel 20 ... index ring 20D ... first rotary dial 21 ... index portion 21L ... center line 22 ... index ring fixing member 22f ... insertion portion side end surface 22s ... insertion portion side surface 23 ... circular step 24 ... Circumferential groove 25 ... connecting member 30D ... second rotary dial
30h ... Mounting hole 30p ... Anti-rotation plane 31 ... Bending direction notification portion 31L ... Center line 32 ... Fixing member 32f ... Abutting surface 32h ... Through hole 32p ... Plane 33 ... Fixing screw 34 ... Rotation angle regulating pin 50 ... Leaf spring 51 ... Mounting part 52 ... Arm part
53 ... Sliding projection 53f ... Curved outer surface 54 ... Spring fixing screw 71 ... Positioning member
71s ... Positioning surface 72 ... Tubular elastic member 73 ... Engagement holding member 74 ... Fixed adjustment ring

Claims (8)

操作部を構成する術者が把持する外装体の内面側に一体に固設された操作部口金パイプと、
前記操作部口金パイプの挿入部側に回動可能に設けられ、先端と基端とを有する挿入部の基端部が一体に固設される挿入部口金パイプと、
前記操作部口金パイプに対して回動可能に設けられ、指標環が一体に固設されて第１の回転ダイヤルを構成する指標環固定部材と、
前記挿入部を前記操作部に対して回動させる際に操作される挿入部回動つまみが一体に固設され、前記第１の回転ダイヤル及び前記操作部口金パイプに対して回動可能に設けられる一方、前記挿入部口金パイプに対して一体に固設される第２の回転ダイヤルを構成する湾曲方向告知部を備える回動つまみ固定部材と、
前記第１の回転ダイヤルの指標環固定部材又は前記第２の回転ダイヤルの回動つまみ固定部材の何れか一方に当接する当接部、及び、前記当接部が当接した部材とは異なる他方の部材に固定される固定部を具備する弾性部材と、
前記第１の回転ダイヤルの指標環固定部材又は前記第２の回転ダイヤルの回動つまみ固定部材の何れか一方に設けられ、前記挿入部口金パイプの回動に応じて前記弾性部材の当接部の当接状態を変化させる当接状態切替部と、を具備し、
前記当接状態切替部は、前記弾性部材の当接部が当接する指標環固定部材の当接面の予め定めた位置又は前記回動つまみ固定部材の当接面の予め定めた位置に設けられ、前記挿入部が前記操作部に対して予め定めた量回動したことをクリック感で告知する貫通孔または穴、或いは、回動に要する力量を変化させて告知する窪み或いは凸部である
ことを特徴とする内視鏡。 An operation part cap pipe integrally fixed to the inner surface side of the exterior body grasped by the operator constituting the operation part;
An insertion portion base pipe that is rotatably provided on the insertion portion side of the operation portion base pipe, and a base end portion of the insertion portion having a distal end and a base end is integrally fixed;
An indicator ring fixing member which is provided so as to be rotatable with respect to the operation portion base pipe, and an indicator ring is integrally fixed to form a first rotary dial;
An insertion portion rotation knob that is operated when the insertion portion is rotated with respect to the operation portion is integrally fixed and provided so as to be rotatable with respect to the first rotation dial and the operation portion base pipe. On the other hand, a rotary knob fixing member comprising a bending direction notification portion constituting a second rotary dial fixed integrally with the insertion portion base pipe,
The contact portion that contacts either the index ring fixing member of the first rotary dial or the rotation knob fixing member of the second rotary dial, and the other that is different from the member that the contact portion contacts an elastic member having a fixing portion fixed to the member,
The contact portion of the elastic member is provided on either the indicator ring fixing member of the first rotary dial or the rotary knob fixing member of the second rotary dial according to the rotation of the insertion portion base pipe a contact state switching unit for changing the state of contact comprises a,
The contact state switching portion is provided at a predetermined position of the contact surface of the indicator ring fixing member with which the contact portion of the elastic member contacts or a predetermined position of the contact surface of the rotary knob fixing member. A through hole or hole for notifying by a click feeling that the insertion portion has rotated a predetermined amount with respect to the operation portion, or a depression or a protrusion for changing the amount of force required for rotation.
An endoscope characterized by that. 前記第１の回転ダイヤルの回転操作力量を予め定めた力量に設定する第１摩擦力調整部材を備える一方、前記第２の回転ダイヤルの回転操作力量を予め定めた力量に設定する第２摩擦力調整部材を備え、
前記第２の回転ダイヤルの回転操作力量を前記第１の回転ダイヤルの回転操作力量より小さく設定してあることを特徴とする請求項１に記載の内視鏡。 A second frictional force that includes a first frictional force adjusting member that sets the rotational operation force amount of the first rotary dial to a predetermined force amount, and that sets the rotational operation force amount of the second rotary dial to a predetermined force amount. An adjustment member,
The endoscope according to claim 1, wherein a rotational operation force amount of the second rotary dial is set smaller than a rotational operation force amount of the first rotary dial. 前記指標環が一体に固設される指標環固定部材を内視鏡回転軸の軸方向に対して複数配列することを特徴とする請求項２に記載の内視鏡。 The endoscope according to claim 2, wherein a plurality of index ring fixing members on which the index ring is fixed integrally are arranged with respect to the axial direction of the endoscope rotation shaft. 前記第２の回転ダイヤルの回動に要する力量は、前記第１の回転ダイヤルの回動に応じて変化することを特徴とする請求項１に記載の内視鏡。 The force required for rotation of the second rotary dial endoscope according to claim 1, characterized in that changes in accordance with rotation of the first rotary dial. 前記指標環固定部材の回動軸と前記回動つまみ固定部材の回動軸とは、同軸に配設されたことを特徴とする請求項１乃至請求項４のいずれか一項に記載の内視鏡。 Wherein A rotating shaft of the index ring fixing member and the rotating knob fixed member and rotation shaft of, among any one of claims 1 to 4, characterized in that disposed coaxially Endoscope. 前記挿入部の長手軸は、前記回動つまみ固定部材の回動軸と同軸に配設されたことを特徴とする請求項５に記載の内視鏡。 The endoscope according to claim 5 , wherein a longitudinal axis of the insertion portion is disposed coaxially with a rotation axis of the rotation knob fixing member. 前記第１の回転ダイヤル又は前記第２の回転ダイヤルに突出して設けられた指標部の色は、前記操作部又は前記挿入部と異なる色であることを特徴とする請求項１乃至請求項５のいずれか一項に記載の内視鏡。 6. The color of the indicator portion that protrudes from the first rotary dial or the second rotary dial is a color different from that of the operation portion or the insertion portion . The endoscope according to any one of the above. 前記第１の回転ダイヤル又は前記第２の回転ダイヤルは、二色成形により成形されたことを特徴とする請求項７に記載の内視鏡。   The endoscope according to claim 7, wherein the first rotary dial or the second rotary dial is formed by two-color molding.
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