JPH032527B2 - - Google Patents

Info

Publication number
JPH032527B2
JPH032527B2 JP56168949A JP16894981A JPH032527B2 JP H032527 B2 JPH032527 B2 JP H032527B2 JP 56168949 A JP56168949 A JP 56168949A JP 16894981 A JP16894981 A JP 16894981A JP H032527 B2 JPH032527 B2 JP H032527B2
Authority
JP
Japan
Prior art keywords
motor
section
endoscope
curved portion
bending
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.)
Expired - Lifetime
Application number
JP56168949A
Other languages
Japanese (ja)
Other versions
JPS5869523A (en
Inventor
Shuichi Takayama
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.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP56168949A priority Critical patent/JPS5869523A/en
Priority to EP82109701A priority patent/EP0078017B1/en
Priority to DE8282109701T priority patent/DE3278275D1/en
Priority to AT82109701T priority patent/ATE33203T1/en
Publication of JPS5869523A publication Critical patent/JPS5869523A/en
Priority to US06/701,657 priority patent/US4559928A/en
Publication of JPH032527B2 publication Critical patent/JPH032527B2/ja
Granted legal-status Critical Current

Links

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
    • A61B1/00147Holding or positioning arrangements
    • A61B1/0016Holding or positioning arrangements using motor drive units
    • 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
    • A61B1/00002Operational features of endoscopes
    • A61B1/00039Operational features of endoscopes provided with input arrangements for the user
    • A61B1/00042Operational features of endoscopes provided with input arrangements for the user for mechanical operation

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Endoscopes (AREA)

Description

【発明の詳細な説明】 この発明は、内視鏡、特に内視鏡彎曲部をモー
タドライブで彎曲駆動する内視鏡に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope, and particularly to an endoscope whose curved portion is driven by a motor drive.

一般に内視鏡は内視鏡操作部に設けられたアン
グルノブを操作することにより彎曲部を屈曲でき
るように構成されているが最近、この彎曲部の屈
曲をモータドライブにておこなう内視鏡が開発さ
れている。例えば、実開昭53−45790及び51−
91989並びに特開昭56−13455に開示されたモータ
ドライブ式内視鏡がある。しかしこれら従来の内
視鏡はモータをスイツチの開閉によつて制御し彎
曲部を屈曲させている。このため、彎曲部は一定
速度で回転するモータによつて屈曲されるので彎
曲部を微妙に屈曲させることができず微妙な屈曲
操作に関して問題がある。
Generally, endoscopes are configured so that the curved section can be bent by operating an angle knob provided on the endoscope operation section, but recently, endoscopes that use a motor drive to bend the curved section have been developed. being developed. For example, Utility Model Publication No. 53-45790 and 51-
There are motor-driven endoscopes disclosed in JP-A No. 91989 and Japanese Patent Application Laid-open No. 56-13455. However, these conventional endoscopes control the motor by opening and closing a switch to bend the curved portion. Therefore, since the curved portion is bent by a motor rotating at a constant speed, the curved portion cannot be bent delicately, and there is a problem with delicate bending operations.

従つて、この発明の目的は彎曲部の屈曲を微妙
に調整できる内視鏡を提供することにある。
Therefore, an object of the present invention is to provide an endoscope that can finely adjust the bending of the curved portion.

以下図面を参照してこの発明の実施例を説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.

第1図に示すように内視鏡11は操作部12と
この操作部12の上部に設けられる接眼部13と
操作部12の下部から延在する挿入部14と操作
部12の側部から延在するユニバーサルコード1
5とで構成される。操作部12にはワイヤ16が
張架されたワイヤドラム17が設けられこのワイ
ヤドラム17と同軸にギヤ18が軸着されてい
る。このギヤ18はウオームギヤ19と噛合され
ウオームギヤ19はモータ20のシヤフトに取着
されている。ワイヤ16は挿入部14を通つて先
端部21に延びておりワイヤ16の両端が先端部
21に相対向して固着される。彎曲部22には自
在管23が設けられている。内視鏡先端部21か
ら挿入部14及び操作部12を介して接眼部13
の接眼レンズ13aまでイメージガイド24が設
けられる。ライトガイド25は先端部21から挿
入部14及び操作部12を通つてユニバーサルコ
ード15内に導かれる。操作部12にはスイツチ
26,27及び28が設けられる。接眼部13の
接眼レンズ13aに近接して表示用LED29が
設けられる。
As shown in FIG. 1, the endoscope 11 includes an operating section 12, an eyepiece section 13 provided at the upper part of the operating section 12, an insertion section 14 extending from the lower part of the operating section 12, and a side section of the operating section 12. Extending universal code 1
It consists of 5. The operating portion 12 is provided with a wire drum 17 on which a wire 16 is stretched, and a gear 18 is coaxially attached to the wire drum 17. This gear 18 meshes with a worm gear 19, and the worm gear 19 is attached to the shaft of a motor 20. The wire 16 extends through the insertion portion 14 to the distal end portion 21, and both ends of the wire 16 are fixed to the distal end portion 21 so as to face each other. A flexible tube 23 is provided in the curved portion 22. From the endoscope tip 21 through the insertion section 14 and the operation section 12 to the eyepiece section 13
An image guide 24 is provided up to the eyepiece lens 13a. The light guide 25 is guided from the distal end portion 21 through the insertion portion 14 and the operating portion 12 into the universal cord 15 . The operating section 12 is provided with switches 26, 27, and 28. A display LED 29 is provided close to the eyepiece lens 13a of the eyepiece portion 13.

第2図には内視鏡11のモータドライブ系の回
路が示されている。この回路によると、電源31
の一端はスイツチ26及び27の常開接点に接続
され他端はスイツチ26及び27の常閉接点に接
続される。スイツチ26の共通接点は抵抗32を
介してモータ20の一端に接続される。モータ2
0の他端はスイツチ27の共通接点に接続され
る。抵抗32の両端にはスイツチ28の常閉接点
及び共通接点が接続されると共にダイオードブリ
ツジ回路33の入力端に接続される。ブリツジ回
路33の出力端には表示用LED29が抵抗34
を介して接続される。
FIG. 2 shows the circuit of the motor drive system of the endoscope 11. According to this circuit, the power supply 31
One end is connected to the normally open contacts of switches 26 and 27, and the other end is connected to the normally closed contacts of switches 26 and 27. A common contact of switch 26 is connected to one end of motor 20 through a resistor 32. motor 2
The other end of 0 is connected to the common contact of switch 27. The normally closed contact and the common contact of the switch 28 are connected to both ends of the resistor 32, and are also connected to the input end of the diode bridge circuit 33. The display LED 29 is connected to the resistor 34 at the output end of the bridge circuit 33.
connected via.

次に、第1図及び第2図に基ずいて内視鏡11
の動作を説明する。スイツチ26が押され常開接
点に切換えられるとこのスイツチ26の常開接点
及びスイツチ28の常閉接点を介してモータ20
に駆動電流が流れモータ20が正転する。モータ
20の回転はウオームギヤ19を介してギヤ18
を矢印の方向に回転させる。これに伴なつてワイ
ヤドラム17が矢印と同方向に回動する。ワイヤ
ドラム17の回動によりワイヤ16は実線矢印の
方向に引張られ彎曲部22は自在管23の作用に
より上方に屈曲される。先端部21が所望位置に
来たときスイツチ26が解放され常閉接点に切換
わると先端部21はその位置に止まる。次に、先
端部21を反対方向に移動させようとする場合に
はスイツチ27が押され常開接点に切換えられ
る。このときモータ駆動電流はスイツチ27の常
閉接点−モータ20−スイツチ28の常閉接点−
スイツチ26の常閉接点を通つて流れモータ20
は逆転する。従つて、ギヤ18は矢印とは反対方
向に回動しワイヤドラム17によつてワイヤ16
は破線矢印の方向に引張られ彎曲部22は下方に
屈曲する。このようにスイツチ26または27が
押されることによりモータ20は正転または逆転
し彎曲部22が上方または下方に屈曲される。
Next, based on FIGS. 1 and 2, the endoscope 11
Explain the operation. When the switch 26 is pressed and switched to a normally open contact, the motor 20 is
A drive current flows to cause the motor 20 to rotate forward. The rotation of the motor 20 is controlled by the gear 18 via the worm gear 19.
Rotate in the direction of the arrow. Along with this, the wire drum 17 rotates in the same direction as the arrow. The wire 16 is pulled in the direction of the solid arrow by the rotation of the wire drum 17, and the curved portion 22 is bent upward by the action of the flexible tube 23. When the tip 21 reaches the desired position, the switch 26 is released and switches to a normally closed contact, and the tip 21 remains at that position. Next, when the tip 21 is to be moved in the opposite direction, the switch 27 is pressed to change to a normally open contact. At this time, the motor drive current is the normally closed contact of the switch 27 - the motor 20 - the normally closed contact of the switch 28 -
Flow motor 20 through the normally closed contacts of switch 26
is reversed. Therefore, the gear 18 rotates in the direction opposite to the arrow, and the wire 16 is rotated by the wire drum 17.
is pulled in the direction of the dashed arrow, and the curved portion 22 is bent downward. When the switch 26 or 27 is pressed in this manner, the motor 20 rotates forward or reverse, and the curved portion 22 is bent upward or downward.

次に、彎曲部22を微細に屈曲させる場合につ
いて説明する。この場合にはスイツチ26または
27とスイツチ28とが押される。例えば、スイ
ツチ26とスイツチ28が押されるとスイツチ2
6は常開接点に切換わりスイツチ28が開放され
る。このとき、駆動電流はスイツチ26の常開接
点及び抵抗32を介してモータ20に流れる。従
つて、モータ20へ流れる電流は抵抗32によつ
て減衰されモータ20は低速で回転しウオームギ
ヤ19、ギヤ18及びワイヤドラム17を介して
ワイヤ16を実線矢印の方向に徐々に引張る。こ
れにより彎曲部22は徐々に屈曲し先端部21の
位置を微細に移動させる。また、このとき、抵抗
32の端子電圧がブリツジ回路33の入力端に印
加されるので表示用LED29が点灯され微速動
作が表示される。このように、スイツチ28を押
すことにより彎曲部22が微速で屈曲されるので
先端部21の位置を微妙に変化させることができ
内視鏡11の操作性がよくなる。
Next, a case where the curved portion 22 is slightly bent will be described. In this case, switch 26 or 27 and switch 28 are pressed. For example, when switch 26 and switch 28 are pressed, switch 2
6 is switched to a normally open contact, and the switch 28 is opened. At this time, the drive current flows to the motor 20 via the normally open contact of the switch 26 and the resistor 32. Therefore, the current flowing to the motor 20 is attenuated by the resistor 32, and the motor 20 rotates at a low speed to gradually pull the wire 16 through the worm gear 19, gear 18, and wire drum 17 in the direction of the solid arrow. As a result, the curved portion 22 is gradually bent, and the position of the tip portion 21 is minutely moved. Also, at this time, the terminal voltage of the resistor 32 is applied to the input terminal of the bridge circuit 33, so the display LED 29 is lit to display the slow operation. In this way, by pressing the switch 28, the curved portion 22 is bent at a very slow speed, so that the position of the distal end portion 21 can be subtly changed, and the operability of the endoscope 11 is improved.

次に、第3図及び第4図を参照して他の実施例
を説明する。この実施例では、ワイヤドラム17
及びギヤ18が取着されているシヤフト35に制
御ユニツト36の台板37が取付けられる。制御
ユニツト36は台板37に段差をもつて両側に配
設される圧電ゴム38,39,40,41,4
2,43と圧電ゴム配列38乃至40と41乃至
43との間に可動に設けられる操作レバー44に
よつて構成される。接眼部13には圧電ゴム38
乃至43に対応して表示用LED45乃至50が
設けられる。圧電ゴム38乃至43及び表示用
LED45乃至50は第4図に示すように接続さ
れる。即ち、圧電ゴム38乃至43は表示用
LED45乃至50を夫々介してトランジスタ5
1及び52のベースに接続され、同様に圧電ゴム
41乃至43が表示用LED48乃至50を夫々
介してトランジスタ51及び52のベースに接続
される。トランジスタ51のエミツタは圧電ゴム
38乃至40の一端と共に電源53の正極に接続
され、トランジスタ52のエミツタは圧電ゴム4
1乃至43の一端と共に電源54の負極に接続さ
れる。トランジスタ51及び52のコレクタはモ
ータ55の一端に接続され、モータ55の他端は
電源53及び54の接続点に接続される。
Next, another embodiment will be described with reference to FIGS. 3 and 4. In this embodiment, the wire drum 17
A base plate 37 of a control unit 36 is attached to the shaft 35 to which the gear 18 is attached. The control unit 36 has piezoelectric rubbers 38, 39, 40, 41, 4 disposed on both sides of the base plate 37 with steps.
2, 43, piezoelectric rubber arrays 38 to 40, and 41 to 43, the operating lever 44 is movably provided. Piezoelectric rubber 38 is attached to the eyepiece 13.
Display LEDs 45 to 50 are provided corresponding to LEDs 45 to 43. Piezoelectric rubber 38 to 43 and for display
LEDs 45-50 are connected as shown in FIG. That is, the piezoelectric rubbers 38 to 43 are for display purposes.
Transistors 5 through LEDs 45 to 50, respectively.
Similarly, piezoelectric rubbers 41 to 43 are connected to the bases of transistors 51 and 52 via display LEDs 48 to 50, respectively. The emitter of the transistor 51 is connected to the positive electrode of the power supply 53 together with one end of the piezoelectric rubber 38 to 40, and the emitter of the transistor 52 is connected to the positive terminal of the piezoelectric rubber 4.
It is connected to the negative electrode of the power supply 54 together with one end of the terminals 1 to 43. The collectors of transistors 51 and 52 are connected to one end of motor 55, and the other end of motor 55 is connected to a connection point between power supplies 53 and 54.

第3図及び第4図に示す実施例の場合、操作レ
バー44が圧電ゴム38乃至43を圧接するよう
に動かすことによりモータ55の回転方向及び回
転速度が制御される。操作レバー44が矢印の方
向に動かされ圧電ゴム40を押圧すると圧電ゴム
40の抵抗が低下しこの圧電ゴム40及びLED
47を介してトランジスタ52にベース電流が流
れる。トランジスタ52のコレクタにはベース電
流のhfe倍のコレクタ電流が流れこのコレクタ電
流値に応じてモータ55に駆動電流が流れモータ
55は駆動電流値に応じた速度で回転する。モー
タ55の回転に伴つてギヤ18及びワイヤドラム
17が回動する。これにより彎曲部が屈曲され
る。ワイヤドラム17の回動と共に制御ユニツト
36の台板37が回動する。従つて、操作レバー
44の位置により彎曲角を知ることができる。こ
の操作レバー44を強く押すと圧電ゴム39,4
0または圧電ゴム38乃至40が押圧され、これ
ら圧電ゴム39,40または38乃至40が導通
しトランジスタ52に流れるベース電流が増加し
モータ55に流れる駆動電流が増加する。これに
より、モータ55の回転速度は増し彎曲部の彎曲
速度が増加する。即ち、操作レバー44の押す力
に応じて彎曲部の彎曲速度が変えられる。操作レ
バー44が圧電ゴム41乃至43の側に動かすと
押圧される圧電ゴムの個数に応じた速度でモータ
55は逆転し彎曲部の屈曲方向が変えられる。彎
曲部の屈曲速度はLED45乃至50の点灯によ
つて表示される。即ち、LEDの点灯個数が多く
なる程彎曲部の屈曲速度が速くなることが表示に
よつて確認できる。
In the embodiment shown in FIGS. 3 and 4, the rotational direction and rotational speed of the motor 55 are controlled by moving the operating lever 44 so as to press against the piezoelectric rubbers 38 to 43. When the operating lever 44 is moved in the direction of the arrow and presses the piezoelectric rubber 40, the resistance of the piezoelectric rubber 40 decreases and the piezoelectric rubber 40 and the LED
A base current flows into the transistor 52 via the transistor 47 . A collector current hfe times the base current flows through the collector of the transistor 52, and a drive current flows to the motor 55 in accordance with the collector current value, causing the motor 55 to rotate at a speed corresponding to the drive current value. As the motor 55 rotates, the gear 18 and wire drum 17 rotate. This bends the curved portion. As the wire drum 17 rotates, the base plate 37 of the control unit 36 rotates. Therefore, the angle of curvature can be determined based on the position of the operating lever 44. When this operating lever 44 is strongly pressed, the piezoelectric rubber 39, 4
0 or the piezoelectric rubbers 38 to 40 are pressed, and the piezoelectric rubbers 39, 40 or 38 to 40 become conductive, thereby increasing the base current flowing to the transistor 52 and increasing the drive current flowing to the motor 55. As a result, the rotational speed of the motor 55 increases, and the curved speed of the curved portion increases. That is, the bending speed of the bending portion is changed depending on the pressing force of the operating lever 44. When the operating lever 44 is moved toward the piezoelectric rubbers 41 to 43, the motor 55 rotates in reverse at a speed corresponding to the number of piezoelectric rubbers pressed, changing the bending direction of the curved portion. The bending speed of the curved portion is displayed by lighting the LEDs 45 to 50. That is, it can be confirmed from the display that the bending speed of the curved portion increases as the number of LEDs that light up increases.

前記制御ユニツト36には圧電ゴムが用いられ
ているが圧電ゴムの代りに第5図に示すようにマ
イクロスイツチ38a,38b…を用いてもよ
い。
Although piezoelectric rubber is used for the control unit 36, microswitches 38a, 38b, . . . may be used instead of the piezoelectric rubber as shown in FIG.

第6図及び第7図を参照して他の実施例を説明
する。この実施例では、彎曲部操作釦56及び5
7が設けられこれら操作釦56及び57の下部に
はラツクが設けられラツクにピニヨンギヤ58が
噛合されている。ピニヨンギヤ58にはポテンシ
ヨメータ60が結合されている。接眼部7には、
発光ダイオードアレイで構成される表示体62及
び63が設けられる。彎曲部操作釦56及び57
はばね64及び65によつて内視鏡操作部12に
係着され、通常ではポテンシヨメータ60及び6
1は最大抵抗値となるように維持される。また、
両操作釦56及び57は同時に押しても動かない
ように構成されている。
Another embodiment will be described with reference to FIGS. 6 and 7. In this embodiment, the curved portion operation buttons 56 and 5
A rack is provided below these operation buttons 56 and 57, and a pinion gear 58 is meshed with the rack. A potentiometer 60 is coupled to the pinion gear 58. In the eyepiece section 7,
Display bodies 62 and 63 consisting of light emitting diode arrays are provided. Curved section operation buttons 56 and 57
is attached to the endoscope operating section 12 by springs 64 and 65, and normally connected to the potentiometers 60 and 6.
1 is maintained to be the maximum resistance value. Also,
Both operation buttons 56 and 57 are configured so that they do not move even if pressed at the same time.

第7図に示すように、ポテンシヨメータ60及
び61は直列に接続され直列接続電源66及び6
7に接続される。ポテンシヨメータ60及び61
の可動端子は可変インピーダンス素子としてのト
ランジスタ68及び69のベースに夫々接続され
ると共に比較器70乃至74及び75乃至79の
一方入力端に夫々接続される。トランジスタ68
のコレクタは電源66の正極に接続され、トラン
ジスタ69のコレクタは電源67の負極に接続さ
れる。トランジスタ68及び69のエミツタ接続
点と電源66及び67の接続点との間にモータ2
0が接続される。電源66の端子間には分圧抵抗
80乃至85の直列回路が接続され、電源67の
端子間には分圧抵抗86乃至91の直列の直列回
路が接続される。分圧抵抗80乃至91の接続点
は比較器70乃至79の他端に夫々接続される。
比較器70乃至74の出力端は表示器62の発光
ダイオードに抵抗92乃至96を夫々介して接続
される。比較器75乃至79の出力端は抵抗97
乃至101を夫々介して表示器63の発光ダイオ
ードに夫々接続される。
As shown in FIG. 7, potentiometers 60 and 61 are connected in series and series connected power supplies 66 and 6
Connected to 7. Potentiometers 60 and 61
The movable terminals of are connected to the bases of transistors 68 and 69 as variable impedance elements, respectively, and to one input ends of comparators 70 to 74 and 75 to 79, respectively. transistor 68
The collector of the transistor 69 is connected to the positive electrode of the power source 66, and the collector of the transistor 69 is connected to the negative electrode of the power source 67. Motor 2 is connected between the emitter connection point of transistors 68 and 69 and the connection point of power supplies 66 and 67.
0 is connected. A series circuit of voltage dividing resistors 80 to 85 is connected between the terminals of the power source 66, and a series circuit of voltage dividing resistors 86 to 91 is connected between the terminals of the power source 67. Connection points of the voltage dividing resistors 80 to 91 are connected to the other ends of the comparators 70 to 79, respectively.
The output terminals of the comparators 70 to 74 are connected to the light emitting diodes of the display 62 via resistors 92 to 96, respectively. The output terminals of the comparators 75 to 79 are connected to a resistor 97.
The light emitting diodes of the display 63 are connected to the light emitting diodes of the display 63 via the terminals 101 to 101, respectively.

第6図及び第7図の実施例の場合、彎曲部操作
釦56または57が押し出される量に応じて彎曲
部の屈曲速度が変えられる。例えば、操作釦56
が押し出されるとこの操作釦57の移動量に応じ
てポテンシヨメータ60の可動端子が移動しトラ
ンジスタ68に流れるベース電流が変化する。こ
のベース電流のhfe倍のコレクタ電流が駆動電流
としてモータ20に流れ、モータ20は駆動電流
に応じた速度で回転し終局的に彎曲部をモータ回
転速度に応じた速度で屈曲する。このとき、ポテ
ンシヨメータ60の可動端子に現われる電圧が比
較器70乃至74に印加され分圧抵抗80乃至8
5の分電圧と比較される。比較器70乃至74の
出力はポテンシヨメータ60の可動端子の電圧に
応じて表示器62の発光ダイオードを点灯させ
る。即ち、表示器62の発光ダイオードの点灯個
数により彎曲部の屈曲速度が確認できる。この実
施例ではポテンシヨメータ60及び61を用いて
いるので彎曲部は連続的な可変速度で屈曲できる
のでかなり微妙な操作ができ内視鏡の操作性がか
なり向上する。尚、ポテンシヨメータ60及び6
1は1個にまとめて構成してもよい。
In the embodiments shown in FIGS. 6 and 7, the bending speed of the curved section is changed depending on the amount by which the curved section operation button 56 or 57 is pushed out. For example, the operation button 56
When pushed out, the movable terminal of the potentiometer 60 moves in accordance with the amount of movement of the operation button 57, and the base current flowing through the transistor 68 changes. A collector current hfe times the base current flows to the motor 20 as a drive current, and the motor 20 rotates at a speed corresponding to the drive current, ultimately bending the curved portion at a speed corresponding to the motor rotation speed. At this time, the voltage appearing at the movable terminal of potentiometer 60 is applied to comparators 70 to 74, and voltage dividing resistors 80 to 8 are applied to comparators 70 to 74.
It is compared with the divided voltage of 5. The outputs of comparators 70-74 illuminate the light emitting diodes of indicator 62 in response to the voltage at the movable terminal of potentiometer 60. That is, the bending speed of the curved portion can be confirmed by the number of light-emitting diodes on the display 62. In this embodiment, potentiometers 60 and 61 are used, so that the curved portion can be bent at a continuously variable speed, allowing for very delicate operation and considerably improving the operability of the endoscope. In addition, potentiometers 60 and 6
1 may be configured in one piece.

以上説明したように、この発明によれば内視鏡
彎曲部をモータドライブで屈曲操作するときモー
タ速度を変化させることができるので彎曲部を微
妙に屈曲させることができ内視鏡の操作性が向上
する。
As explained above, according to the present invention, when bending the curved portion of the endoscope using the motor drive, the motor speed can be changed, so the curved portion can be bent delicately, thereby improving the operability of the endoscope. improves.

尚、上記実施例では、便宜上、彎曲部と上下2
方向に屈曲できるものとして説明したが実際には
上下左右と4方向に屈曲できるように構成され
る。左右方向の屈曲のための構成と殆んど同じで
あり、ただ、ワイヤの先端を内視鏡先端部に固着
する個所が上下用ワイヤと直交する個所に設けら
れる。
In the above embodiment, for convenience, the curved portion and the upper and lower 2
Although it has been described as being able to bend in any direction, it is actually configured to be able to bend in four directions: up, down, left and right. The structure is almost the same as that for bending in the left-right direction, except that the point where the tip of the wire is fixed to the tip of the endoscope is provided at a point perpendicular to the up-and-down wire.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施例に従つた内視鏡の
一部切欠した斜視図、第2図は第1図の内視鏡の
モータドライブ系の回路図、第3図は他の実施例
の内視鏡の接眼部及び操作部の内部構成を示す斜
視図、第4図は第3図の内視鏡のモータドライブ
系の回路図、第5図は第3図の制御ユニツトの変
形例を示す斜視図、第6図は他の実施例の内視鏡
モータドライブ構成部の斜視図、そして第7図は
第6図の内視鏡のモータドライブ系の回路図であ
る。 11…内視鏡、12…操作部、13…接眼部、
14…挿入部、16…ワイヤ、17…ワイヤドラ
ム、18…ギヤ、19…ウオームギヤ、20…モ
ータ、24…イメージガイド、25…ライトガイ
ド、26乃至28…スイツチ、29…表示用
LED、38乃至43…圧電ゴム、45乃至50
…表示用LED、56及び57…彎曲部操作釦、
60,61…ポテンシヨメータ、62,63…表
示器。
FIG. 1 is a partially cutaway perspective view of an endoscope according to an embodiment of the present invention, FIG. 2 is a circuit diagram of the motor drive system of the endoscope shown in FIG. 1, and FIG. 3 is a diagram showing another embodiment of the endoscope. A perspective view showing the internal configuration of the eyepiece and operation section of the example endoscope, FIG. 4 is a circuit diagram of the motor drive system of the endoscope in FIG. 3, and FIG. 5 is a circuit diagram of the control unit of the endoscope in FIG. FIG. 6 is a perspective view showing a modified example, FIG. 6 is a perspective view of an endoscope motor drive component of another embodiment, and FIG. 7 is a circuit diagram of the motor drive system of the endoscope shown in FIG. 6. 11... Endoscope, 12... Operation section, 13... Eyepiece section,
14... Insertion part, 16... Wire, 17... Wire drum, 18... Gear, 19... Worm gear, 20... Motor, 24... Image guide, 25... Light guide, 26 to 28... Switch, 29... For display
LED, 38 to 43...Piezoelectric rubber, 45 to 50
...Display LED, 56 and 57...Curved part operation button,
60, 61... Potentiometer, 62, 63... Display.

Claims (1)

【特許請求の範囲】 1 挿入部と、この挿入部に設けられた湾曲部
と、この湾曲部の湾曲量を制御する操作部と、前
記湾曲部をモータにより駆動する駆動手段と、前
記モータの回転速度を制御する制御手段とを有す
る内視鏡において、制御手段は操作部による湾曲
量制御に応じてインピーダンスが変化する可変イ
ンピーダンス素子を有し、前記可変インピーダン
ス素子のインピーダンス変化によりモータ回転速
度を制御すると共に、前記操作部に設けた接眼部
には前記制御手段によつて調整されたモータ回転
速度を表示する手段が設けられていることを特徴
とする内視鏡。 2 前記制御手段は前記操作部の湾曲量制御に連
動し、前記可変インピーダンス素子へ供給する制
御信号を調整するポテンシヨメータを含んでいる
特許請求の範囲第1項記載の内視鏡。 3 前記駆動手段によつて湾曲される前記湾曲部
の湾曲方向を表示する手段が設けられている特許
請求の範囲第1項乃至第2項のいずれか1に記載
の内視鏡。
[Scope of Claims] 1. An insertion section, a curved section provided in the insertion section, an operating section that controls the amount of curvature of this curved section, a drive means that drives the curved section by a motor, and a drive means that drives the curved section with a motor. In the endoscope, the control means has a variable impedance element whose impedance changes according to the bending amount control by the operating section, and the motor rotation speed is controlled by the impedance change of the variable impedance element. An endoscope comprising means for displaying a motor rotation speed adjusted by the control means in an eyepiece section provided in the operation section. 2. The endoscope according to claim 1, wherein the control means includes a potentiometer that adjusts a control signal supplied to the variable impedance element in conjunction with the bending amount control of the operating section. 3. The endoscope according to any one of claims 1 to 2, further comprising means for displaying a bending direction of the bending portion bent by the drive means.
JP56168949A 1981-10-22 1981-10-22 Endoscope Granted JPS5869523A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP56168949A JPS5869523A (en) 1981-10-22 1981-10-22 Endoscope
EP82109701A EP0078017B1 (en) 1981-10-22 1982-10-20 Endoscope apparatus with motor-driven bending mechanism
DE8282109701T DE3278275D1 (en) 1981-10-22 1982-10-20 Endoscope apparatus with motor-driven bending mechanism
AT82109701T ATE33203T1 (en) 1981-10-22 1982-10-20 ENDOSCOPE WITH DRIVE MOTOR FOR BENDING CONTROL.
US06/701,657 US4559928A (en) 1981-10-22 1985-02-15 Endoscope apparatus with motor-driven bending mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56168949A JPS5869523A (en) 1981-10-22 1981-10-22 Endoscope

Publications (2)

Publication Number Publication Date
JPS5869523A JPS5869523A (en) 1983-04-25
JPH032527B2 true JPH032527B2 (en) 1991-01-16

Family

ID=15877519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56168949A Granted JPS5869523A (en) 1981-10-22 1981-10-22 Endoscope

Country Status (1)

Country Link
JP (1) JPS5869523A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5878635A (en) * 1981-11-02 1983-05-12 オリンパス光学工業株式会社 Endoscope apparatus
JPH0619493B2 (en) * 1984-09-21 1994-03-16 オリンパス光学工業株式会社 Angle control device for endoscope
US5400769A (en) * 1991-02-18 1995-03-28 Olympus Optical Co., Ltd. Electrically bendable endoscope apparatus having controlled fixed bending speed
US5469840A (en) * 1991-12-10 1995-11-28 Olympus Optical, Ltd. Electromotive warping type endoscope with velocity control

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5345790B2 (en) * 1974-08-29 1978-12-08

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5191989U (en) * 1975-01-21 1976-07-23
JPS5345790U (en) * 1976-09-22 1978-04-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5345790B2 (en) * 1974-08-29 1978-12-08

Also Published As

Publication number Publication date
JPS5869523A (en) 1983-04-25

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