JPH11137512A - Endoscopic equipment - Google Patents

Endoscopic equipment

Info

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
Authority
JP
Japan
Prior art keywords
direct
view
viewing
scope
optical system
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
Other languages
Japanese (ja)
Inventor
Hiroshi Fujita
寛 藤田
Katsuya Hirakui
克也 平久井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP9305986A priority Critical patent/JPH11137512A/en
Publication of JPH11137512A publication Critical patent/JPH11137512A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • A61B1/00163—Optical arrangements
    • A61B1/00174—Optical arrangements characterised by the viewing angles
    • A61B1/00181—Optical 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.

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。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope apparatus used for industrial or medical purposes, and more particularly to an endoscope apparatus capable of switching between two objective optical systems to enable direct and side viewing.

【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。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。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。2. Description of the Related Art There is a conventional endoscope apparatus in which a direct-viewing scope and a side-viewing scope are selected according to the intended use, and either one of the scopes is connected to a main unit and can be used. The direct-viewing scope has an observation window provided in the long axis direction of the scope, and the direction of insertion of the scope coincides with the direction of the observation window. The side-view type scope has an observation window provided in a direction substantially perpendicular to the long axis of the scope, and provides a visual field centered in a direction perpendicular to the scope insertion direction.

【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] A side-viewing scope is suitable for performing a precise diagnosis by viewing the lumen wall from the front, but when inserted in a target direction in a narrow lumen, the advancing direction is not directly visible, so the insertability is directly viewed. Inferior to the type.

【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。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
線撮影するものである。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。[0004] A major application of the lateral viewing scope is endoscopic retrograde pancreatography. This uses a forceps channel of a side-viewing type endoscope inserted into the duodenum, inserts a catheter called a cannula into a pancreatic duct having an opening in the side wall of the duodenum, and injects a contrast agent into the pancreatic duct in a retrograde manner.
It is to take a line. For this reason, it is necessary to directly observe the pancreatic duct opening and the cannula, which are lateral sides, with an endoscope, and a side-view type 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, in the conventional direct-viewing scope described above, the bending radius of the rigid tip portion provided with the observation window is about three to five times the diameter of the rigid tip portion. Although this method is convenient for observing the esophagus and the stomach wall with a large lumen, there is a problem that it is not possible to observe the wall of the narrow lumen directly.

【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。Further, since the conventional side-view type scope cannot directly observe the insertion direction, the scope must be inserted by estimating the state of the insertion direction from the side-view image, making it difficult to insert the scope. There was a problem that it 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。[0007] In view of the above problems, an object of the present invention is to provide an endoscope apparatus capable of performing both direct viewing and side viewing 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。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a direct-view objective optical system having an optical axis in the longitudinal direction of a scope and an optical axis in a direction substantially perpendicular to the longitudinal direction of the scope. Side-view objective optical system, a single solid-state imaging device, and an optical path switching unit that switches light from the direct-view objective optical system or light from the side-view objective optical system and causes the light to enter the solid-state imaging device. And an endoscope apparatus having a gist.

【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。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。According to the present invention having the above configuration, when the endoscope is inserted, the light incident from the direct-view objective optical system is guided to the image pickup device to enable direct-view observation, while observing the front in the insertion direction. The endoscope can be easily inserted into the subject. Then, after insertion to a desired position, observation can be performed while arbitrarily switching between direct viewing and side viewing according to the observation target, so that when observing a relatively large lumen, light from the objective optical system for direct viewing is captured by the image sensor. When observing the side wall of a narrow lumen, etc., the observation direction is switched at any time, such as conducting light from the objective optical system for side observation to the image sensor to perform side observation. 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。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。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1A is a perspective view of a rigid distal end portion of the endoscope apparatus according to the present invention, and FIG. 1B is a cross-sectional view of the rigid distal end portion taken along line AA ′.

【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、
鉗子口７、直視用対物レンズ３及び側視用対物レンズ５
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
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
９等を支持するフレーム２３、フレーム２５、鏡胴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。As shown in FIG. 1, a rigid tip portion 1 includes a direct-view objective lens 3 which is a direct-view objective optical system having an optical axis in the long axis direction of the scope, and an optical axis in a direction substantially perpendicular to the long axis direction of the scope. A side-view objective lens 5, which is a side-view objective optical system having
Forceps port 7, direct-view objective lens 3, and side-view objective lens 5
At least three illumination lenses 9 arranged so as to sandwich the filter, an air supply nozzle 11, a water supply nozzle 13, a crystal filter 15 as an optical low-pass filter, and a cover glass 1.
7, solid-state image sensor 19 such as a single-chip CCD, signal cable 21 connected to solid-state image sensor 19, solid-state image sensor 1
9 supporting the frame 23, the frame 25, the lens barrel 2
7, a frame 29, a lens barrel 31, a driving element 33, a mirror 35 for switching light incident on the solid-state imaging element 19, a light shielding plate 37, and a signal cable 39 for the driving 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。The mirror 35 is driven by the driving element 33 so as to rotate around the driving element 33. As will be described later, the mirror 35 is in a first state horizontally inclined in FIG. And a second state that has risen to a degree.

【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。In the first state, the light incident from the direct-view objective lens 3 directly enters the solid-state imaging device 19 and is converted into an image signal, which is provided in an endoscope apparatus main body (processor) (not shown). A direct-view image can be displayed on the monitor screen.

【００１４】また第２の状態では、側視用対物レンズ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。In the second state, the side-viewing objective lens 5
Is reflected by the mirror 35 to be incident on the solid-state imaging device 19, is converted into an image signal, and a side-view image can be displayed on a monitor screen provided in an endoscope apparatus main body (not shown).

【００１５】図２は、ミラー３５を駆動する駆動素子３
３であるワブルモータを説明するための（ａ）斜視図、
（ｂ）分解斜視図、（ｃ）横断面図を用いた動作説明図
である。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。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
３とステータ４５との間には隙間が設けられている。FIG. 2 shows a driving element 3 for driving a mirror 35.
(A) perspective view for explaining a wobble motor which is 3;
It is an operation explanatory view using (b) an exploded perspective view and (c) a cross-sectional view. As shown in FIGS. 3A and 3B, the driving element (wobble motor) 33 is a cylindrical rotating body, at least a surface of which is conductive, and a rotor 43 connected to a signal line (not shown), And a hollow cylindrical stator 45 disposed on the outer periphery. The inner diameter of the stator 45 is set to be larger than the outer diameter of the rotor 43,
A gap is provided between 3 and 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。On the inner surface of the stator 45, a plurality of striped thin electrodes 47 parallel to the axis of the cylinder are formed, and each is connected to a signal line (not shown).

【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。そして複数の電極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。The potentials of the polarities opposite to each other are applied to the rotor 43 and the electrode 47 of the stator 45 by these signal lines, and an electrostatic attraction acts so that the rotor 43 is attracted to the electrode 47 of the stator 45. And a plurality of electrodes 4
By sequentially switching the electrodes to which the voltage is applied from 7, the rotor 43 is rotated because the rotor is pulled by electrostatic attraction and follows the movement of the electrode to which the voltage is applied.

【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。For example, as shown in FIG. 2C, of the plurality of electrodes 47 provided on the inner surface of the stator 45, the electrode to which a voltage is applied is sequentially moved in a counterclockwise direction from 47a to 47b. Then, the rotor 43 receiving the electrostatic attractive force from the electrode 47 rotates from the position indicated by 43a to the position indicated by 43b while being in contact with the inner surface of the stator 45.

【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。That is, the contact point between the rotor 43 and the stator 45 (the contact point in this cross-sectional view, but actually the contact line in the axial direction) moves in the direction indicated by the arrow 49a, and moves to 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
１ｂで示す方向（逆方向）へ移動または回転する。When the direction of rotation of the electrode 47 to which a voltage is applied is reversed, the contact point between the rotor 43 and the stator 45 and the center of the rotor 43 become the arrow 49b and the arrow 5 respectively.
It moves or rotates in the direction (reverse direction) shown by 1b.

【００２１】このように、ワブルモータのステータ４５
の内面に設けられた複数の電極４７のうち、ロータ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。As described above, the stator 45 of the wobble motor is used.
Of the plurality of electrodes 47 provided on the inner surface of the rotor 43
The rotor 43 can be rotated in both forward and reverse directions by changing the rotation direction of the electrode to which a voltage is applied.

【００２２】次に、図３を参照して、光路切換の詳細を
説明する。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。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。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。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。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。Next, details of the optical path switching will be described with reference to FIG. 3, the same components as those in FIG. 1 are denoted by the same reference numerals, and components that do not contribute to optical path switching are omitted. FIG. 3A is a conceptual diagram showing a direct-view observation state of the distal end rigid portion 1 of the endoscope. This state is a first state in which the mirror 35 is horizontally tilted, and light incident from the direct-view objective lens 3 forms an image on the solid-state imaging device 19 via the quartz filter 17. At this time, the light incident from the side-view objective lens 5 is reflected by the mirror 35 in the horizontal state in the incident direction, and does not enter the solid-state imaging device 19. 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 and 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。この状態は、
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
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
３のモニタ画面に表示される。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。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。FIG. 3 (b) is a conceptual diagram showing a state of observing the rigid distal end portion 1 of the endoscope in a side view. This state is
The mirror 35 is in the second state in which the mirror 35 rises at an angle of 45 °.
The light is reflected by the light source, forms an image on the solid-state imaging device 19 via the crystal filter 17, is converted into an image signal, and is
3 is displayed on the monitor screen. At this time, the light incident from the direct-view objective lens 3 is blocked and absorbed by the light shielding plate 37 provided on the back surface of the mirror 35. Thereby, a side-view image perpendicular 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。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。As shown in FIG. 3C, the state shown in FIG. 3A and the state shown in FIG. 3B are integrated with the light shielding plate 37 by the rotation of the rotor 43 of the wobble motor which is the driving element 33. The switching is performed by the rotation of the mirror 35 that has been changed. This switching instruction drives the driving element 33 through the signal line 39 under the control of the processor 53 which receives a signal of a switch provided on the operation panel (not shown) of the endoscope 1 or an operation panel of the apparatus main body, for example. This 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。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。In the above embodiment, a wobble motor using an electrostatic force is used. However, a wobble motor using a magnetic force can be used. However, the wobble motor using the electrostatic force is superior to the wobble motor using the electromagnetic force for the following two reasons (a) and (b).

【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。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。(A) The electrostatic wobble motor has a very simple structure including a rotor, which is a cylindrical inner cylinder, and an outer cylinder provided around the inner cylinder and provided with a plurality of electrodes on the inner surface. Since power is independent of electrode thickness, the electrodes can be very thin. In addition, since a space for coils and magnets required in the case of electromagnetic driving is not required, it is suitable for small size and thin type.

【００２７】（ｂ）小型化に伴うスケール効果により、
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。(B) Due to the scale effect accompanying the miniaturization,
An electrostatic force whose output depends on the electrode area is relatively more advantageous than an electromagnetic force whose output depends on the volume of the magnetic field.

【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）
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。このため、細径
化に伴い、モータの作製が困難となる。It is also possible to use an ultrasonic motor as a drive element for driving the mirror, but in the case of an ultrasonic motor, a portion for generating an output (actuator)
Must be formed in a section cut in the axial direction, that is, the longitudinal direction of the endoscope. For this reason, it is difficult to manufacture a motor as the diameter is reduced.

【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。As described above, in the present embodiment, for example, the state of the entire lumen is confirmed in the large intestine observation. Since a side-view scope cannot observe the entire lumen like a direct view, it took a lot of time and effort to find an area that required detailed observation, but a single endoscope scope By making it possible to switch between direct-view observation and side-view observation, it is possible to observe the entire situation with a direct-view image, and to perform detailed observation that cannot be done with direct-view, by side-viewing. Endoscopy diagnosis can be performed.

【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。In this embodiment, a direct / side view switch is provided on at least one of the endoscope and the apparatus main body, and the surgeon can easily switch between direct view and side view as needed during diagnosis. Since the configuration is such that it is possible to perform operations such as direct observation at the time of inserting the scope and side observation at the site of interest, even if it is not an expert, it can be easily performed.

【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。Further, in the present embodiment, the use of an electrostatic actuator for rotating the reflecting mirror provided in the optical path of both the direct-viewing and side-viewing lens systems reduces the size of the optical path switching means. Therefore, it is possible to contribute to a reduction in the diameter of the distal end portion of the endoscope, and it is possible to reduce the burden on the 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。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。In this embodiment, a direct / side illumination lens system that contributes to both direct-view observation and side-view observation is provided between the direct-view objective lens and the side-view objective lens. This contributes to the miniaturization of the scope distal end and the amount of used light source can be reduced. In other words, in order to provide the necessary illumination light distribution by the two-light system, at least four lights are usually required to perform the direct-side observation, and the end of the scope becomes large. If one intermediate lamp between the objective lens and the side-viewing objective lens is commonly used at all times, it is possible to reduce the size of the distal end portion and reduce the amount of light source used.

【００３３】[0033]

【発明の効果】以上説明したように本発明によれば、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。As described above, according to the present invention, 1
The endoscope can be switched between direct viewing and side viewing as necessary, so that the scope can be easily inserted into the region of interest while observing the direct-view image when the scope is inserted, and according to the conditions of the observation site. Since the observation can be performed while switching between the direct-view image and the side-view image at any time, there is an effect that the open flat portion and the narrow lumen wall portion can be easily observed.

【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。In addition, it is not necessary to perform a wide-area observation with a direct-view scope in advance, and it is not necessary to replace the scope with a new scope to precisely observe the lesion by a side-view scope. This has the effect of reducing the number of inspections and shortening 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。FIG. 1A is a perspective view showing a configuration of a distal end portion of a scope in an embodiment of an endoscope apparatus according to the present invention, and FIG. 1B is a cross-sectional view taken along line AA ′.

【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。FIG. 2 is a perspective view (a), an exploded perspective view (b), and a cross-sectional view (c) illustrating the structure and operation of a wobble motor as a driving element.

【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。3A and 3B are a direct view state (a), a side view state (b), and a perspective view (c) of a peripheral portion of the mirror according to the embodiment.

【符号の説明】[Explanation 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…
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
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。DESCRIPTION OF SYMBOLS 1 ... Tip rigid part, 3 ... Objective lens for direct vision, 5 ... Objective lens for side vision, 7 ... Forceps port, 9 ... Illumination lens, 11 ... Air supply nozzle, 13 ... Water supply nozzle, 15 ... Quartz filter, 17 ...
Cover glass, 19: solid-state image sensor, 21: signal cable, 23: frame, 25: frame, 27: lens barrel, 2
9: frame, 31: lens barrel, 33: drive element, 35: mirror, 37: light shield plate, 39: signal cable.

Claims (4)

【特許請求の範囲】[Claims] 【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。1. A direct-view objective optical system having an optical axis in a long axis direction of a scope, a side-view objective optical system having an optical axis in a direction substantially perpendicular to the long axis direction of a scope, and a single solid-state imaging device. An endoscope apparatus comprising: an optical path switching unit that switches light from the direct-view objective optical system or light from the side-view objective optical system and causes the light to enter the solid-state imaging device. 【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。2. The endoscope apparatus according to claim 1, wherein the optical path switching means includes a reflecting mirror that can be tilted and an actuator that causes the reflecting mirror to be tilted. 【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。3. The endoscope apparatus according to claim 2, wherein the actuator is a wobble motor. 【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. Between the direct-viewing objective lens provided at the distal end of the scope of the direct-viewing objective optical system and the side-viewing objective lens provided at the distal end of the scope of the side-viewing objective optical system. The endoscope apparatus according to claim 1, further comprising an illumination lens provided for both direct-view observation and side-view observation.
JP9305986A 1997-11-07 1997-11-07 Endoscopic equipment Pending JPH11137512A (en)

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JP9305986A JPH11137512A (en) 1997-11-07 1997-11-07 Endoscopic equipment

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JPH11137512A true JPH11137512A (en) 1999-05-25

Family

ID=17951703

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