JPH11137512A - Endoscopic equipment - Google Patents

Endoscopic equipment

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Publication number
JPH11137512A
JPH11137512A JP9305986A JP30598697A JPH11137512A JP H11137512 A JPH11137512 A JP H11137512A JP 9305986 A JP9305986 A JP 9305986A JP 30598697 A JP30598697 A JP 30598697A JP H11137512 A JPH11137512 A JP H11137512A
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JP
Japan
Prior art keywords
side
view
direct
optical system
viewing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9305986A
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Japanese (ja)
Inventor
Hiroshi Fujita
Katsuya Hirakui
克也 平久井
寛 藤田
Original Assignee
Toshiba Corp
株式会社東芝
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Publication date
Application filed by Toshiba Corp, 株式会社東芝 filed Critical Toshiba Corp
Priority to JP9305986A priority Critical patent/JPH11137512A/en
Publication of JPH11137512A publication Critical patent/JPH11137512A/en
Application status is Pending legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00163Optical arrangements
    • A61B1/00174Optical arrangements characterised by the viewing angles
    • A61B1/00181Optical arrangements characterised by the viewing angles for multiple fixed viewing angles

Abstract

PROBLEM TO BE SOLVED: To execute the observation of both direct and side views by simple switchover by making incident light from an objective optical system for direct viewing, or from an objective optical system for side viewing fall on a solid imaging element selectively.
SOLUTION: Incident light from an objective lens 3 for direct viewing forms an image in a solid imaging element 19 through a crystal filter 17. Incident light from an objective lens 5 for side viewing is reflected in the direction of the incident light by a mirror 35 in a horizontal state without falling on the solid imaging element 19, thereby a direct view image in the axial direction of an endoscope is converted to image signals by the solid imaging element 19. Incident light from the side viewing objective lens 5 is reflected by the mirror 35 and forms an image in the solid imaging element 19 through a crystal filter 17, and it is converted to image signals and displayed on the monitor of a processor 53. In this case, incident light from the direct viewing objective lens 3 is intercepted and absorbed by a light interception plate 37 provided on the rear side of the mirror 35. Therefor, a side view image in the direction perpendicular to the axial direction of the endoscope can be observed.
COPYRIGHT: (C)1999,JPO

Description

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

【0001】 [0001]

【発明の属する技術分野】本発明は、産業用または医療用に用いられる内視鏡装置に関し、特に2つの対物光学系を切り替えて直視及び側視の観察が可能な内視鏡装置に関する。 The present invention relates to relates to an endoscope apparatus used for industrial or medical relates to an endoscope apparatus capable of direct and side view of the observation in particular by switching the two objective optical system.

【0002】 [0002]

【従来の技術】従来の内視鏡装置は、直視型スコープと側視型スコープとを用途に応じて選択し、いずれか一方のスコープを本体装置に接続して利用可能なものがある。 Conventional endoscope apparatus selects according to the application and direct view scope and side-view type scope, there is available either the scope connected to the main unit. 直視型スコープは、スコープ長軸方向に観察窓を設けたものであり、スコープ挿入方向と観察窓の方向とが一致している。 Direct view scope are those provided with a viewing window to the scope longitudinal direction, the direction of the scope insertion direction and the observation window are coincident. 側視型スコープは、スコープ長軸方向と略垂直な方向に観察窓を設けたものであり、スコープ挿入方向に対して垂直な方向を中心とする視野が得られる。 Side-view type scope, which has provided a scope long axis direction substantially perpendicular to the viewing window, the field of view around the direction perpendicular to the scope insertion directions.

【0003】側視型スコープは管腔壁を正面視して精密診断するのに向いているが、細い管腔内で目的方向へ挿入する際、進行方向が直接見えないので、挿入性は直視型のものに比べて劣っている。 [0003] The side-viewing scope is directed to precise diagnosis and front view of the tube wall, but when inserted into the target direction in the narrow lumen, since the direction of travel is not directly visible, the insertion of direct view They are inferior to those of the mold.

【0004】側視型スコープの主要な用途として、内視鏡的逆行性膵管造影法がある。 As a primary use of the side-viewing scopes, there is endoscopic retrograde pancreatic angiography. これは十二指腸に挿入した側視型内視鏡の鉗子チャンネルを利用して、十二指腸側壁部に開口部を有する膵管にカニューレと呼ばれるカテーテルを挿入し、造影剤を逆行性に膵管に注入してX It utilizes the forceps channel of the inserted side-viewing endoscope into the duodenum, inserting a catheter called cannula pancreatic duct having an opening into the duodenum side wall, and injected into the pancreatic duct in retrograde contrast medium X
線撮影するものである。 It is intended to line shooting. このため内視鏡により直接側方である膵管開口部とカニューレとを観察する必要があり、側視型内視鏡が用いられる。 Must observe the pancreatic duct opening and the cannula is who directly side by endoscope Therefore, lateral vision endoscope is used.

【0005】 [0005]

【発明が解決しようとする課題】しかしながら上記従来の直視型スコープは、観察窓を設けた先端硬性部の屈曲半径が先端硬性部の直径の3倍から5倍程度あったので、この屈曲半径よりも管腔部が広大な食道や胃壁等を観察するには好都合であるが、狭小な管腔部の壁面を直視するような観察はできないという問題点があった。 However the conventional direct view scope [0005] Since the bending radius of the distal end rigid portion provided with the observation window was 5 times from 3 times the diameter of the distal end rigid portion, than the bend radius is also the lumen to observe vast esophagus and stomach wall or the like is convenient, there is a problem that can not be observed as to face the wall surface of the narrow lumen.

【0006】また、上記従来の側視型スコープは、直接挿入方向を観察することができないので、側視画像から挿入方向の状況を推定してスコープを挿入しなければならず、スコープ挿入が困難であるという問題点があった。 [0006] Also, the conventional side-view type scope, it is impossible to observe directly the insertion direction, it is necessary to insert the scope to estimate the status of the insertion direction from the side view image, difficulty scope insertion there is a problem that is.

【0007】以上の問題点に鑑み、本発明の目的は、簡単な切替操作により直視と側視の両方の観察が行える内視鏡装置を提供することである。 In view of the above problems, an object of the present invention is to provide an endoscope apparatus capable of performing direct view and both side-view observation by a simple switching operation.

【0008】 [0008]

【課題を解決するための手段】上記目的を達成するための本発明は、スコープ長軸方向に光軸を持つ直視用対物光学系と、スコープ長軸方向と略垂直な方向に光軸を持つ側視用対物光学系と、単一の固体撮像素子と、前記直視用対物光学系からの光又は前記側視用対物光学系からの光を切り換えて前記固体撮像素子に入射させる光路切換手段と、を備えたことを要旨とする内視鏡装置である。 The present invention SUMMARY OF THE INVENTION To achieve the above object, with the scope longitudinal direction and front-view objective optical system having an optical axis, the optical axis to the scope longitudinal direction and a direction substantially perpendicular a side-viewing objective optical system, and a single solid-state imaging device, an optical path switching means to be incident to switch the light to the solid-state image pickup element from light or the objective optical system for the side view from the front-view objective optical system , an endoscope device according to subject matter, further comprising: a.

【0009】上記構成を有する本発明によれば、内視鏡スコープ挿入時には、直視用対物光学系から入射する光を撮像素子に導いて直視観察を可能とし、挿入方向である前方を観察しながら容易に内視鏡スコープを被検体内に挿入することができる。 According to the present invention having the above structure, when the endoscope insertion, to allow direct observation of the light incident from the front-view objective optical system is guided to the imaging device, while observing the front an insertion direction easily endoscope can be inserted into a subject. そして所望の位置まで挿入後、観察対象に応じて任意に直視と側視とを切り替えながら観察が行えるので、比較的広い管腔部を観察する場合は直視用対物光学系からの光を撮像素子に導いて直視観察を行い、狭い管腔部の側壁等を観察する場合は側視用対物光学系からの光を撮像素子に導いて側視観察を行うというように、随時観察方向の切替ができる。 And after insertion to the desired position, so enabling observation by switching between any direct and side view in accordance with the observation target, when observing a relatively wide lumen light an imaging element from direct view objective optical system perform direct observation led to, and so perform a narrow lumen side-view observation led to the imaging device the light from the objective optical system side-viewing when viewing the side wall or the like, switching at any time viewing direction it can.

【0010】 [0010]

【発明の実施の形態】次に図面を参照して、本発明の実施の形態を詳細に説明する。 Referring DESCRIPTION OF THE INVENTION Next drawings, an embodiment of the present invention in detail. 図1(a)は本発明に係る内視鏡装置の先端硬性部の斜視図であり、図1(b)は同先端硬性部のAA′線断面図である。 1 (a) is a perspective view of the distal end rigid portion of an endoscope apparatus according to the present invention, FIG. 1 (b) is a line AA 'sectional view of the distal end rigid portion.

【0011】図1に示すように、先端硬性部1は、スコープ長軸方向に光軸を持つ直視用対物光学系である直視用対物レンズ3、スコープ長軸方向と略垂直な方向に光軸を持つ側視用対物光学系である側視用対物レンズ5、 [0011] As shown in FIG. 1, the distal end rigid portion 1, a direct view objective optical system at a front-view objective lens 3 having an optical axis in the scope longitudinal direction, the optical axis to the scope longitudinal direction and a direction substantially perpendicular an objective lens 5 for side-view of an objective optical system for side-viewing with,
鉗子口7、直視用対物レンズ3及び側視用対物レンズ5 Forceps port 7, an objective lens 5 for front-view objective lens 3 and side view
を挟むように配設された少なくとも3つの照明レンズ9、送気ノズル11、送水ノズル13、光学的ローパスフィルタとしての水晶フィルタ15、カバーガラス1 Disposed so as to sandwich the the at least three illumination lenses 9, air supply nozzle 11, the water supply nozzle 13, the crystal filter 15 as an optical low-pass filter, a cover glass 1
7、単板式CCDなどの固体撮像素子19、固体撮像素子19に接続された信号ケーブル21、固体撮像素子1 7, the solid-state imaging device 19, such as a single-plate CCD, the solid-state imaging device 19 is connected to the signal cable 21, the solid-state imaging device 1
9等を支持するフレーム23、フレーム25、鏡胴2 Frame 23 for supporting the 9 like, the frame 25, the lens barrel 2
7、フレーム29、鏡胴31、駆動素子33、固体撮像素子19に入射する光を切り換えるミラー35、遮光板37、及び駆動素子33用の信号ケーブル39を備えて構成されている。 7, the frame 29, barrel 31, drive element 33, a mirror 35 for switching the light incident on the solid-state imaging device 19 is configured to include a signal cable 39 for light shielding plate 37 and the drive element 33.

【0012】ミラー35は、駆動素子33によって駆動素子33の回りに回動するように駆動され、後述されるように、図1(b)中で水平に倒れた第1の状態と、斜め45°に立ち上がった第2の状態とを取ることができるようになっている。 [0012] mirror 35 is driven to rotate around the driving element 33 by the driving device 33, as will be described below, a first state in which the fallen horizontally in FIG. 1 (b), the diagonal 45 taking a second state that rises ° so that the can.

【0013】そして第1の状態では、直視用対物レンズ3から入射した光が直接に固体撮像素子19に入射して画像信号に変換され、図示されない内視鏡装置本体部(プロセッサー)に設けられたモニタ画面に直視画像を表示することができる。 [0013] Then in a first state, and it enters the solid-state imaging device 19 is converted into an image signal to the light incident from the front-view objective lens 3 is directly provided on the endoscope apparatus main body unit (not shown) (processor) direct view image on the monitor screen and can be displayed.

【0014】また第2の状態では、側視用対物レンズ5 [0014] In the second state, the objective lens for the side-viewing 5
から入射した光がミラー35に反射されて固体撮像素子19に入射し、画像信号に変換され、図示されない内視鏡装置本体部に設けられたモニタ画面に側視画像を表示することができる。 Light incident is reflected by the mirror 35 and enters the solid-state imaging device 19 is converted into an image signal, can be displayed side-viewing images on a monitor screen provided in the endoscope apparatus main body (not shown).

【0015】図2は、ミラー35を駆動する駆動素子3 [0015] Figure 2 is a drive element 3 for driving the mirror 35
3であるワブルモータを説明するための(a)斜視図、 A is wobble motor for explaining the 3 (a) a perspective view,
(b)分解斜視図、(c)横断面図を用いた動作説明図である。 (B) an exploded perspective view, illustrates the operation using the cross-sectional view (c). 同図(a)、(b)に示すように、駆動素子(ワブルモータ)33は、円筒形の回転体である少なくとも表面が導電性であり、図示されない信号線に接続されたロータ43と、その外周部に配設された中空円筒状のステータ45とからなる。 FIG (a), (b), the driving element (wobble motor) 33, at least the surface is a rotating body cylindrical is electrically conductive, a rotor 43 connected to a signal line, not shown, the consisting disposed hollow cylindrical stator 45. the outer periphery. そしてロータ43の外径に比べてステータ45の内径は大きく設定され、ロータ4 The inner diameter of the stator 45 as compared with the outer diameter of the rotor 43 is set larger, the rotor 4
3とステータ45との間には隙間が設けられている。 A gap is provided between the 3 and the stator 45.

【0016】ステータ45の内面には、円筒の軸と平行なストライプ状の薄い複数の電極47が形成されていて、それぞれ図示されない信号線に接続されている。 [0016] the inner surface of the stator 45 has a plurality of electrodes 47 thin axis of parallel stripe-shaped cylinder be formed, is connected to a signal line, not shown, respectively.

【0017】そしてこれらの信号線によりロータ43とステータ45の電極47は、互いに逆極性の電位が与えられ、ステータ45の電極47にロータ43が引き寄せられるように静電引力が作用する。 [0017] The electrodes 47 of the rotor 43 and stator 45 by these signal lines is opposite the polarity of the potential is given to one another, the electrostatic attractive force as the rotor 43 is attracted to the electrode 47 of the stator 45 acts. そして複数の電極4 The plurality of electrodes 4
7から順次電圧を印加する電極を切り換えることにより、電圧が印加された電極の移動につれて、ロータが静電引力により引っ張られて追随するのでロータ43が回転することとなる。 By sequentially switching the electrodes for applying a voltage from 7, as movement of the electrodes to which a voltage is applied, so that the rotor 43 is rotated because the rotor to follow is pulled by electrostatic attraction.

【0018】例えば、図2(c)に示すように、ステータ45の内面に設けられた複数の電極47のうち、電圧が印加される電極を47aから47bまで順次反時計回りの方向へ移動させると、電極47から静電引力を受けるロータ43は、43aで示す位置から43bで示す位置へステータ45の内面に接しながら回転移動する。 [0018] For example, as shown in FIG. 2 (c), among the plurality of electrodes 47 provided on the inner surface of the stator 45, is moved sequentially in the counterclockwise direction of the electrode to which a voltage is applied from 47a to 47b When the electrode 47 rotor 43 to undergo electrostatic attraction from the rotation moves while in contact with the inner surface of the stator 45 from the position indicated by 43a to the position shown by 43b.

【0019】すなわち、ロータ43とステータ45との接触点(この断面図上では接触点であるが、実際には軸方向の接触線)は、矢印49aで示す方向へ移動し、ロータ43の中心は、矢印51aで示す方向に回転する。 [0019] That is, (but in this section diagram is the contact point, in fact the contact line of the axial) contact point between the rotor 43 and the stator 45 is moved in the direction indicated by arrow 49a, the center of the rotor 43 rotates in the direction indicated by the arrow 51a.

【0020】なお、電圧を印加する電極47の回転方向を逆にすると、ロータ43とステータ45との接触点及びロータ43の中心は、それぞれ矢印49b及び矢印5 [0020] Incidentally, when the rotation direction of the electrode 47 for applying a voltage to the opposite, the center of the rotor 43 and the contact point and the rotor 43 of the stator 45, respectively the arrows 49b and arrows 5
1bで示す方向(逆方向)へ移動または回転する。 To move or rotate in the direction (opposite direction) indicated by 1b.

【0021】このように、ワブルモータのステータ45 [0021] In this way, the stator of the wobble motor 45
の内面に設けられた複数の電極47のうち、ロータ43 Of the plurality of electrodes 47 provided on the inner surface, the rotor 43
に対して電圧を印加する電極の回転方向を変えることにより正逆両方向にロータ43を回転させることができる。 It is possible to rotate the rotor 43 in opposite directions by changing the direction of rotation of the electrode for applying a voltage to.

【0022】次に、図3を参照して、光路切換の詳細を説明する。 Next, with reference to FIG. 3, illustrating details of the optical path switching. 図3において、図1と同じ構成要素には同じ符号を付与し、光路切換に寄与しない構成要素は省略されている。 3, the same components as FIG. 1 with the same reference numerals, components that do not contribute to the optical path switching are omitted. 図3(a)は、内視鏡スコープの先端硬性部1の直視観察状態を示す概念図である。 3 (a) is a conceptual diagram showing a direct observation state of the distal end rigid portion 1 of the endoscope. この状態は、ミラー35が水平に倒れた第1の状態であり、直視用対物レンズ3から入射した光は、水晶フィルタ17を介して固体撮像素子19へ結像する。 This state is a first state in which the mirror 35 falls down horizontally, light incident from the front-view objective lens 3 forms an image the solid-state imaging device 19 through the crystal filter 17. このとき側視用対物レンズ5から入射した光は、水平状態のミラー35により入射してきた方向に反射され、固体撮像素子19に入射することはない。 The light incident from the objective lens 5 for this case side-viewing is reflected in a direction that has entered the mirror 35 in the horizontal state, it is not to be incident on the solid-state imaging device 19. これにより、内視鏡スコープの軸方向の直視画像が固体撮像素子19により画像信号に変換されて、プロセッサー53のモニタ画面に表示される。 Thus, the direct-view image in the axial direction of the endoscope is converted into an image signal by the solid-state imaging device 19 is displayed on the monitor screen of the processor 53.

【0023】図3(b)は、内視鏡スコープの先端硬性部1の側視観察状態を示す概念図である。 [0023] FIG. 3 (b) is a conceptual diagram showing a side view observation state of the distal end rigid portion 1 of the endoscope. この状態は、 This condition,
ミラー35が斜め45°に立ち上がった第2の状態であり、側視用対物レンズ5から入射した光は、ミラー35 A second state in which the mirror 35 rises obliquely 45 °, light incident from the objective lens 5 for side vision, the mirror 35
で反射されて、水晶フィルタ17を介して固体撮像素子19へ結像し、画像信号に変換されて、プロセッサー5 In is reflected, through the crystal filter 17 and focused to the solid-state imaging device 19, it is converted into an image signal, the processor 5
3のモニタ画面に表示される。 It is displayed in the 3 of the monitor screen. このとき、直視用対物レンズ3から入射した光は、ミラー35の裏面に設けられた遮光板37により遮られ吸収される。 In this case, the light incident from the front-view objective lens 3 is blocked by the light shielding plate 37 provided on the back surface of the mirror 35 is absorbed. これにより、内視鏡スコープの軸方向に対して直角方向の側視画像が観察される。 Thus, the direction perpendicular to the side view image with respect to the axial direction of the endoscope is observed.

【0024】図3(a)の状態と図3(b)の状態とは、図3(c)に示すように、駆動素子33であるワブルモータのロータ43の回転により、遮光板37と一体となったミラー35の回転により切り換えられる。 [0024] The state of the state and the diagram of FIG 3 (a) 3 (b), as shown in FIG. 3 (c), by the rotation of the wobble motor rotor 43 is a drive element 33, integral with the light shielding plate 37 It is switched by the rotation of the mirror 35 becomes. この切換指示は、例えば、内視鏡スコープ1の図示しない手元操作部、装置本体の操作パネルに設けられたスイッチの信号を受けたプロセッサー53の制御によって、信号線39を通じて駆動素子33を駆動することにより達成される。 The switching instruction, for example, the operation portion (not shown) of the endoscope 1, the control processor 53 which receives the switching signal provided on the operation panel of the apparatus main body, for driving the drive element 33 via the signal line 39 It is achieved by.

【0025】なお、以上の実施形態では、静電力を利用したワブルモータを利用したが、磁力を用いたワブルモータを利用することもできる。 [0025] In the above embodiments, but utilizing wobble motor that utilizes electrostatic force, it may be utilized wobble motor using a magnetic force. ただし、静電力を用いたワブルモータは、次に示す(a)と(b)の2つの理由により、電磁力を用いたワブルモータより優れている。 However, wobble motor using electrostatic forces, the following (a) and by two reasons (b), are superior wobble motor using an electromagnetic force.

【0026】(a)静電ワブルモータは、円筒形の内筒であるロータと、内筒の周囲に配設され内面に複数の電極を設けた外筒からなる非常に簡単な構造となり、また静電力は電極の厚さに無関係なので、電極は非常に薄くすることができる。 [0026] (a) electrostatic wobble motor has a rotor which is an inner cylinder of a cylindrical, becomes very simple structure consisting of an outer tube having a plurality of electrodes on an inner surface disposed around the inner tube, also static power so irrelevant to the thickness of the electrode, the electrode can be made very thin. そして、電磁駆動の場合に必要となるコイルや磁石のスペースが不要となるため、小型及び薄型に適している。 Then, the coil and the magnet space required in the case of electromagnetic driving is not required, suitable for small or thin.

【0027】(b)小型化に伴うスケール効果により、 [0027] by (b) the scale effect due to miniaturization,
磁界の体積に出力が依存する電磁力より、電極面積に出力が依存する静電力の方が相対的に有利となる。 An electromagnetic force dependent output is the volume of the magnetic field, towards the electrostatic force output to electrode area dependence is relatively favorable.

【0028】また、ミラーを駆動する駆動素子として超音波モータを利用することも可能であるが、超音波モータの場合、出力を発生させる部分(アクチュエート部) Further, portions it is also possible to use an ultrasonic motor as a drive element for driving a mirror, if the ultrasonic motor, for generating an output (actuating unit)
を軸(アキシャル)方向、つまり内視鏡の長手方向に関して切った断面に形成する必要がある。 An axis (axial) direction, it is necessary to form a section cut in the longitudinal direction of the clogging endoscope. このため、細径化に伴い、モータの作製が困難となる。 Therefore, along with the diameter reduction, making the motor becomes difficult.

【0029】以上説明したように本実施形態では、例えば、大腸観察において管腔全体の様子を確認し、側面の壁などに臨床上詳細観察を必要とするエリアが存在した場合、従来技術では、側視スコープでは直視のように管腔全体を観察することができないので、詳細観察を必要とするエリアを見出すのに多大な時間と労力を要していたが、単一の内視鏡スコープによる直視観察と側視観察を切替え可能とすることにより、直視像により全体の様子を観察し、直視ではできない詳細観察を側視により行うことができるため、診断効率を向上させると共に、より正確な内視鏡診断を行うことができる。 [0029] In the present embodiment, as described above, for example, to see how the entire lumen body in the large intestine observed, if the area in need of clinically detailed observation such as the wall of the side were present, in the prior art, since the side viewing scope can not be observed in entire lumen body as direct, but it takes a lot of time and effort to find the area that requires detailed observation, by a single endoscope by enabling switching the direct observation and side-viewing observation, to observe the entire state by direct image, for a detailed observation is not possible with direct view can be performed by lateral vision, inner improves the diagnostic efficiency, more accurate it is possible to perform the endoscopic diagnosis.

【0030】また、本実施形態では、内視鏡スコープ及び装置本体の少なくとも一方に直視/側視切換スイッチを設け、術者が診断中に必要に応じて直視観察又は側視観察を簡単に切り換えることができる構成としているので、スコープ挿入時には直視観察、関心部位では側視観察といった作業を熟練者でなくとも容易に行うことができる。 Further, in the present embodiment, the direct / side view selector switch on at least one of the endoscope and the apparatus main body is provided, the operator to easily switch between direct observation or side-viewing observation needed during diagnosis since a configuration capable, direct observation at the time scope insertion, the region of interest can be easily without a skilled work such side-viewing observation.

【0031】さらに、本実施形態では、直視用及び側視用の両レンズ系の光路に設けられた反射鏡の回動のために静電用アクチュエータを採用することにより、光路切換手段を小型化しているので、内視鏡スコープ先端部の細径化に寄与することができ、ひいては被検体の負担を軽減することができる。 Furthermore, in the present embodiment, by employing an actuator for electrostatic for rotating the reflecting mirror provided on the optical path of both lens systems for front-view and side view, an optical path switching means downsized since it is, can contribute to reduce the diameter of the endoscope tip portion, it is possible to reduce the burden of the thus subject.

【0032】そして、本実施形態では、直視用対物レンズと側視用対物レンズの間に、直視観察・側視観察両方に寄与する直・側兼用の照明レンズ系を配設しているため、スコープ先端部の小型化に寄与すると共に、使用光源量を減少させることができる。 [0032] Then, in this embodiment, between the front-view objective lens and the side-view objective lens, it is disposed an illumination lens system contributes directly-side combined to both direct observation and side view observation, together contribute to the miniaturization of the scope tip, it is possible to reduce the used light source volume. つまり、2灯方式により必要な照明配光を提供するには、通常、直側視観察を行うために最低4灯必要となり、スコープ先端部を大型化してしまうが、本方式のように直視用対物レンズと側視用対物レンズの中間の1灯を共通として常に利用すれば、先端部の小型化と使用光源量の低減を図ることができる。 That is, an illuminating light distribution required by the two-lamp system, typically a minimum 4 light required to perform a straight side-viewing observation, but increases in size of the distal end of the scope, for direct view as in the present method by always utilizing one light intermediate the objective lens and side-view objective lens common, it is possible to reduce the size and use a light source of the tip portions.

【0033】 [0033]

【発明の効果】以上説明したように本発明によれば、1 According to the present invention as described above, according to the present invention, 1
本の内視鏡スコープを必要により直視と側視とに切替が行えるので、スコープ挿入時には直視像を観察しながら関心領域まで容易にスコープを挿入することができるとともに、観察部位の状況に応じて随時直視像と側視像とを切り替えながら観察が行えるので、開けた平面部も狭い管腔壁部も容易に観察することができるという効果を奏する。 Since the endoscope of the present can be performed switched to the direct and side-viewing necessary, at the time scope insertion it is possible to insert easily scope to the region of interest while observing the direct image, depending on the circumstances of the observed region since perform observation while switching and optionally direct image and the side view image, an effect that it is possible to easily observe narrow lumen wall portion is also flat portion opened.

【0034】また、予め直視スコープにて広範囲の観察を行い、これによって発見された病変部をさらにスコープを入れ換えて側視スコープにより精密に観察する必要が無くなり、スコープ入れ替えに伴う被検体の負担を軽減し、検査時間を短縮することができるという効果を奏する。 Further, performs a wide range of viewing in advance direct scope, thereby precisely it is not necessary to observe the lateral vision scope interchanged further scope lesions found, the burden of the subject accompanying the scope replacement alleviate an effect that it is possible to shorten the inspection time.

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

【図1】本発明に係る内視鏡装置の実施形態におけるスコープ先端部の構成を示す斜視図(a)及びAA′線に沿う断面図(b)である。 Is a perspective view showing a configuration of a distal end of the scope in an embodiment of an endoscope apparatus according to the invention, FIG (a) and the line AA 'in along sectional view (b).

【図2】駆動素子であるワブルモータの構造及び動作を説明する斜視図(a)、分解斜視図(b)、横断面図(c)である。 Figure 2 is a perspective view illustrating the structure and operation of the wobble motor is driven element (a), is an exploded perspective view (b), cross-sectional view (c).

【図3】実施形態における直視状態(a)、側視状態(b)、ミラー周辺部の斜視図(c)である。 [Figure 3] a direct view of the embodiment state (a), a side view state (b), a perspective view of the mirror peripheral portion (c).

【符号の説明】 DESCRIPTION OF SYMBOLS

1…先端硬性部、3…直視用対物レンズ、5…側視用対物レンズ、7…鉗子口、9…照明レンズ、11…送気ノズル、13…送水ノズル、15…水晶フィルタ、17… 1 ... tip device, 3 ... front-view objective lens, 5 ... objective lens side-view, 7 ... forceps port, 9 ... illumination lens, 11 ... air supply nozzle, 13 ... water supply nozzle, 15 ... crystal filter, 17 ...
カバーガラス、19…固体撮像素子、21…信号ケーブル、23…フレーム、25…フレーム、27…鏡胴、2 Cover glass, 19 ... solid-state imaging device, 21 ... signal cable, 23 ... frame, 25 ... frame, 27 ... barrel, 2
9…フレーム、31…鏡胴、33…駆動素子、35…ミラー、37…遮光板、39…信号ケーブル。 9 ... frame, 31 ... lens barrel, 33 ... driving device, 35 ... mirror, 37 ... light shielding plate, 39 ... signal cable.

Claims (4)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 スコープ長軸方向に光軸を持つ直視用対物光学系と、 スコープ長軸方向と略垂直な方向に光軸を持つ側視用対物光学系と、 単一の固体撮像素子と、 前記直視用対物光学系からの光又は前記側視用対物光学系からの光を切り換えて前記固体撮像素子に入射させる光路切換手段と、 を備えたことを特徴とする内視鏡装置。 And 1. A front-view objective optical system having an optical axis in the scope longitudinal direction, an objective optical system for side vision substantially having an optical axis in a direction perpendicular and scope longitudinal direction, and a single solid-state imaging device an endoscope apparatus comprising: the optical path switching means to be incident on the solid-state imaging device by switching the light, from the light or the objective optical system for the side view from the front-view objective optical system.
  2. 【請求項2】 前記光路切換手段は、起倒可能な反射鏡と、該反射鏡を起倒させるアクチュエータとを備えたことを特徴とする請求項1記載の内視鏡装置。 Wherein said optical path switching means includes a raised or lowered capable reflector, the endoscope apparatus according to claim 1, characterized in that an actuator for defeat cause the reflector.
  3. 【請求項3】 前記アクチュエータは、ワブルモータであることを特徴とする請求項2記載の内視鏡装置。 Wherein the actuator is an endoscope apparatus according to claim 2, characterized in that the wobble motor.
  4. 【請求項4】 前記直視用対物光学系のうち前記スコープ先端に設けられた直視用対物レンズと前記側視用対物光学系のうち前記スコープ先端部に設けられた側視用対物レンズとの間に、直視観察及び側視観察の両方に供する照明レンズを配設したことを特徴とする請求項1記載の内視鏡装置。 4. A between the scope the scope tip provided a side-view objective lens of the tip and the front-view objective lens provided in the side view objective optical system of the front-view objective optical system to, direct observation and an endoscope apparatus according to claim 1, characterized in that disposed an illumination lens to be subjected to both side-viewing observation.
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