JPS5869526A - Curving apparatus of endoscope - Google Patents

Curving apparatus of endoscope

Info

Publication number
JPS5869526A
JPS5869526A JP56169805A JP16980581A JPS5869526A JP S5869526 A JPS5869526 A JP S5869526A JP 56169805 A JP56169805 A JP 56169805A JP 16980581 A JP16980581 A JP 16980581A JP S5869526 A JPS5869526 A JP S5869526A
Authority
JP
Japan
Prior art keywords
bending
endoscope
section
flexible
curved
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.)
Granted
Application number
JP56169805A
Other languages
Japanese (ja)
Other versions
JPS6348538B2 (en
Inventor
細野 佐芙郎
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 Corp
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 Corp, Olympus Optical Co Ltd filed Critical Olympus Corp
Priority to JP56169805A priority Critical patent/JPS5869526A/en
Publication of JPS5869526A publication Critical patent/JPS5869526A/en
Publication of JPS6348538B2 publication Critical patent/JPS6348538B2/ja
Granted legal-status Critical Current

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  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Endoscopes (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 この発明は、内視鏡挿入部を先端側が湾曲されたチュー
ブ部材に挿通することにより、長いjl;4人部を有す
る内視鏡においでも、有効な湾曲操作を可能にする内視
鏡の湾曲装置に関するものである。
[Detailed Description of the Invention] This invention enables effective bending operation even in long endoscopes having four parts by inserting the endoscope insertion section into a tube member whose distal end is curved. This invention relates to a bending device for an endoscope.

従来からカニユーレを目的とする所に挿入し、様察、処
置等を行う内視鏡において、ヘーベル機構を用いてカニ
ユーレに屈曲を与えるという構造があった。この構造は
、ヘーベル先端から手元側の操作部までワイヤを連結し
、操作部にてこのワイヤを牽引、弛緩させるようになっ
ている。又、従来の内視鏡の湾曲機構においても、湾曲
部の屈曲には、操作部から途中の挿入部を経て先端近傍
まで内設されたワイヤを牽引、弛緩させるものであった
2. Description of the Related Art Conventionally, endoscopes in which a cannula is inserted into a target location for observation, treatment, etc. have had a structure in which a Hebel mechanism is used to bend the cannula. In this structure, a wire is connected from the tip of the Hebel to an operating section on the hand side, and the operating section pulls and relaxes this wire. Also, in the conventional bending mechanism of an endoscope, the bending part is bent by pulling and relaxing a wire installed inside the endoscope from the operating part through the intermediate insertion part to the vicinity of the distal end.

これらワイヤを用いた手段、又は装置においては、挿入
部の有効長が短い内視鏡においては問題がないが、長く
なるとワイヤと該ワイヤを案内している管との摩擦抵抗
が大きくなり、操作部にてワイヤを牽引、弛緩させるこ
とによって湾曲操作をしようとしても、挿入部の先端側
1で充分その力が伝達されず、又大きな力で操作すると
断線等生じ易く、長尺の内視鏡の湾曲機構としては不充
分なものであった。
These means or devices using wires do not pose any problems in endoscopes where the effective length of the insertion section is short, but as the effective length of the insertion section becomes longer, the frictional resistance between the wire and the tube guiding the wire increases, causing Even if a bending operation is attempted by pulling and relaxing the wire at the end of the insertion section, the force is not sufficiently transmitted to the distal end 1 of the insertion section, and if the operation is performed with a large force, wire breakage is likely to occur. This was insufficient as a bending mechanism.

例えば、原子炉の蒸気発生器等の観察用に用いられる工
業用ファイバスコープでは、有効長が6〔m3以上の長
尺が要求される。このように有効長が6〔m3以上のも
のになると、従来からあるワイヤによるスコープの湾曲
機構では充分その機能を満たすもので々かった。
For example, an industrial fiberscope used for observing a steam generator of a nuclear reactor, etc., is required to have an effective length of 6 m<3> or more. In this way, when the effective length is 6 [m3 or more], the conventional scope bending mechanism using a wire is not sufficient to fulfill its function.

又、米国特許3778170−Q公報には、内視鏡の案
内チューブと内視鏡との組治わせが開示されているが、
このチューブは内視鏡挿入部の寮内の役割をするもので
あシ、屈曲操作を自由に行うことができ々い。
Further, U.S. Patent No. 3,778,170-Q discloses a method for assembling an endoscope guide tube and an endoscope.
This tube serves as a dormitory for the endoscope insertion section, and cannot be bent freely.

この発明は上述した点に鑑みてなされたもので、内視鏡
挿入部を摺動して挿抜可能とする可撓性の屈曲成形部を
先端側に有するチューブを設け、上記挿入部の一部に該
屈曲成形部のたわみの硬さより軟かい部分及び硬い部分
を設けることにより、長尺の挿入部を有する内視鏡にあ
っても充分な湾曲操作を可能にする内視鏡の湾曲装置を
提供することを目的とする。
This invention has been made in view of the above-mentioned points, and includes a tube having a flexible bent part on the distal end side that allows the endoscope insertion part to be inserted and removed by sliding. By providing a part that is softer and a part that is harder than the bending hardness of the bending molding part, an endoscope bending device is provided that enables sufficient bending operation even in an endoscope having a long insertion part. The purpose is to provide.

以下、この発明を図面を参照して説明する。Hereinafter, the present invention will be explained with reference to the drawings.

第1図及び第2図は、この発明の第1実施例を示すもの
で、第1図は内視鏡を示し、第2図は湾曲シースを示す
1 and 2 show a first embodiment of the invention, with FIG. 1 showing an endoscope and FIG. 2 showing a curved sheath.

これらの図において、この実施例に係る内視鏡は、先端
側から手元側にII次売先端部1軟性のたわみ部2.硬
性のたわみ部2′及び硬性部3よりなる挿入部4と、硬
性部3の手元側端部が接続される操作部5と、この操作
部5の他端側に接続された観察用の接眼部6とから構成
されている。この操作部5には、照明光伝達用のライト
ガイドケーブルを介して図示し々い光源装置に装着でき
るようにコネクタ7が設けである。
In these figures, the endoscope according to this embodiment has two parts from the distal end side to the proximal side. An insertion section 4 consisting of a rigid flexible section 2' and a rigid section 3, an operating section 5 to which the proximal end of the rigid section 3 is connected, and an observation connection connected to the other end of the operating section 5. It is composed of an eye part 6. This operating section 5 is provided with a connector 7 so that it can be attached to various light source devices shown in the drawings via a light guide cable for transmitting illumination light.

一方、上記挿入部4の外周に該挿入部4をスライドして
挿抜自在となる適度の可撓性を有する湾曲シース8が装
着できるように構成されている。この湾曲シース8は、
その先端部側が常時所定方向に所定量湾曲された可撓性
の湾曲部を有する屈曲成形部9が形成され、その後端側
は把持部10とされ、この湾曲シース8を内視鏡挿入部
4に外嵌し、その際屈曲成形部9先端が硬性のたわみ部
2′先端よシ手元側に位置された場合、その他端側の把
持部10が操作しやすいように、操作部5に近い硬性部
3に位置するように構成されている。
On the other hand, it is configured such that a curved sheath 8 having appropriate flexibility can be attached to the outer periphery of the insertion section 4 so that the insertion section 4 can be inserted and removed freely by sliding the insertion section 4. This curved sheath 8 is
A bending part 9 having a flexible curved part whose distal end side is always curved by a predetermined amount in a predetermined direction is formed, and the rear end side is a grip part 10, and the curved sheath 8 is attached to the endoscope insertion part 4. When the tip of the bending part 9 is positioned closer to the proximal side than the tip of the hard flexible part 2', the grip part 10 on the other end side is made of a hard material close to the operating part 5 so that the grip part 10 on the other end side can be easily operated. It is configured to be located in section 3.

前記硬性のたわみ部2′及び軟性のたわみ部2は、それ
ぞれ上記屈曲成形部9のたわみの硬さより、硬く及び軟
かく形成されている。
The hard bending part 2' and the soft bending part 2 are formed to be harder and softer than the bending hardness of the bending part 9, respectively.

即ち、湾曲シース8を挿入部4に外嵌し、湾曲シース8
の屈曲成形部9先端が第3図に示すように硬性のたわみ
部2′の外周位置にあるときには、屈曲成形部9側の湾
曲状態が硬性のたわみ部2′によって略直線状にされ、
一方、屈曲成形部9の先端が第4図に示すように、軟性
のたわみ部2の外周失効位置におるときには、該屈曲成
形部9が軟性のたわみ部2を該屈曲成形部9の状態にな
るように湾曲させるように構成されている。
That is, the curved sheath 8 is fitted onto the insertion section 4, and the curved sheath 8 is inserted into the insertion section 4.
When the tip of the bent part 9 is at the outer peripheral position of the rigid flexible part 2' as shown in FIG. 3, the curved state of the bent part 9 side is made into a substantially straight line by the rigid flexible part 2',
On the other hand, when the tip of the bending part 9 is at the outer periphery expiration position of the soft flexible part 2, as shown in FIG. It is configured to be curved as follows.

このように構成されたこの実施例によれば、以下に述べ
るように、長尺の挿入部を有する内視鏡においても、そ
の湾曲操作が充分可能になる。
According to this embodiment configured in this manner, as will be described below, even in an endoscope having a long insertion section, the bending operation can be sufficiently performed.

先ず、内視鏡を使用するとき、あらかじめ挿入部4を湾
曲シース8に挿入し、湾曲シース8の屈曲成形部9の先
端が硬性のたわみ部2′の外周位置に来るようにする。
First, when using the endoscope, the insertion section 4 is inserted into the curved sheath 8 in advance so that the tip of the bent section 9 of the curved sheath 8 is positioned at the outer circumferential position of the rigid flexible section 2'.

この時、第3図に示すように湾曲シース8の屈曲成形部
9は硬性のたわみ部2′によって直線状に保持される。
At this time, as shown in FIG. 3, the bent portion 9 of the curved sheath 8 is held in a straight line by the hard flexible portion 2'.

そして挿入部4の先端部1を湾曲させようとする時には
、把持部1()を押す等して湾曲シース8を前方に移動
させ、屈曲成形部9の先端が軟性のたわみ部2の外周位
置に来るようにすれば、硬性のたわみ部2′より前方に
位置する軟性のたわみ部2は、屈曲成形部9で外嵌され
る部分捷で屈曲成形部9の湾曲状態に変形されることに
なる。
When the distal end 1 of the insertion section 4 is to be bent, the bending sheath 8 is moved forward by pushing the gripping section 1 (), and the distal end of the bending section 9 is positioned at the outer peripheral position of the soft flexible section 2. If the bending part 2 is positioned in front of the hard bending part 2', the soft bending part 2 will be deformed into the curved state of the bending part 9 by the partial unraveling that is fitted onto the outside of the bending part 9. Become.

従って、上記湾曲シース8の前方への移動量を太きくす
れば、第4図に示すように充分大きく湾曲でき、上記移
動量を小さくすれば、第5図に示すように湾曲量を小さ
くできる。この手段によれば、挿入部4の長さには、殆
んど無関係に湾曲操作できる。
Therefore, if the amount of forward movement of the curved sheath 8 is increased, the curve can be sufficiently large as shown in FIG. 4, and if the amount of movement is decreased, the amount of curvature can be reduced as shown in FIG. . According to this means, the bending operation can be performed almost independently of the length of the insertion section 4.

上記湾曲シース8を回転させれば、任意の方向に湾曲で
きることになる。
By rotating the curved sheath 8, it can be curved in any direction.

このようにして長尺の挿入部を有する内視鏡においても
、簡単且つ確実に所望の湾曲操作ができる。
In this way, even in an endoscope having a long insertion section, a desired bending operation can be performed easily and reliably.

との発明に係る内視鏡として、第6図に示す第2実施例
のように、上述における硬性のたわみ部2′を省いた構
造にすることもできる。
The endoscope according to the invention may also have a structure in which the rigid bending portion 2' described above is omitted, as in the second embodiment shown in FIG.

即ち、挿入部11はその先端側から観察光学系が配役収
容されている先端部1と上述の軟性のたわみ部2に相当
する軟性部12及び硬性部13から構成されている。
That is, the insertion section 11 is composed of a distal end section 1 in which an observation optical system is housed from the distal end side, a flexible section 12 corresponding to the above-mentioned flexible flexible section 2, and a hard section 13.

この作用、効果は第1実施例と略同様なものとなる。尚
、上記硬性部1Bは、湾曲シース8の可撓性の屈曲成形
部9より硬いもの、つまシこの部分に屈曲成形部9が外
嵌された場合湾曲されない強度(硬度)を有するもので
あれば可撓性の部材でも良い。つまり直線状の挿入箇所
の先端側のみを湾曲操作するには、可撓性を有しない硬
性部13が適し、屈曲性に富む挿入箇所に対しては、可
撓性を有する部材で形成したものが適する。
This action and effect are substantially the same as in the first embodiment. The rigid portion 1B may be harder than the flexible bending portion 9 of the curved sheath 8, or may have a strength (hardness) that will not bend when the bending portion 9 is fitted onto this portion of the lash. For example, a flexible member may be used. In other words, in order to bend only the distal end of a straight insertion point, a non-flexible rigid part 13 is suitable, and for an insertion point with high flexibility, a rigid part 13 made of a flexible member is suitable. is suitable.

又、第7図に示す第3実施例のように、上記第2実施例
における硬性部13を分割して、屈曲成形部9よシ硬い
硬性(又は軟性)部21及び屈曲成形部9より軟かい(
第2の)軟性部22とすることもできる。
In addition, as in a third embodiment shown in FIG. shellfish(
It can also be a second) flexible part 22.

このように構成された第3実施例によれば、屈曲成形部
9の先端が先端側の軟性部12の外周部にある時は屈曲
成形部9が外嵌されている該軟性部12が湾曲され、一
方屈曲成形部9の先端が硬性部21にあり、この屈曲成
形部9の後端が(第2の)軟性部22にあると、該屈曲
成形部9が外嵌されている部分の軟性部22は88図に
示すように湾曲されるので、前述の湾曲操作における湾
曲部(つまり軟性のたわみ部2.軟性部12)の他に、
別の箇所においても湾曲できるので、湾曲操作範囲を広
くできることになる。この場合硬性部21の長さを屈曲
成形部9の長さに略等しいかそれ以上にしておけば、屈
曲成形部9全てをその外周部に外嵌した状態において挿
入部11を直線状に保持することができる。そしてこの
位置から屈曲成形部9を前方に移動させれば、上述の各
実施例と略同様の湾曲操作ができ、この位置よシ後方に
移動させれば、(第2の)軟性部22の部分を湾曲でき
る。又、この実施例によれば、挿入部11の広い範囲の
部分を上記軟性部nとすることができるので、屈曲性に
富む挿入箇所にも挿入し易くできるので、広範囲の用途
に使用できるという利点を有する。
According to the third embodiment configured in this way, when the tip of the bending molded part 9 is on the outer periphery of the flexible part 12 on the tip side, the flexible part 12 to which the bending molded part 9 is fitted is curved. On the other hand, if the tip of the bending part 9 is in the hard part 21 and the rear end of this bending part 9 is in the (second) soft part 22, the part where the bending part 9 is fitted is Since the flexible portion 22 is curved as shown in FIG.
Since it can be bent at other locations, the bending operation range can be widened. In this case, by making the length of the hard part 21 substantially equal to or longer than the length of the bending part 9, the insertion part 11 can be held in a straight line when the bending part 9 is entirely fitted around its outer circumference. can do. If the bending forming part 9 is moved forward from this position, a bending operation similar to that in each of the above-mentioned embodiments can be performed, and if the bending forming part 9 is moved backward from this position, the (second) flexible part 22 can be bent. Parts can be curved. Further, according to this embodiment, since a wide range of the insertion portion 11 can be made into the above-mentioned flexible portion n, it is possible to easily insert the insertion portion into an insertion location with high flexibility, so that it can be used for a wide range of applications. has advantages.

以上述べたようにこの発明によれば、内視鏡挿入部の外
周に設けられた該挿入部とスライド可能なチューブ部材
の一部に可撓性を有する屈曲成形部を設け、挿入部の一
部に前記屈曲成形部のたわみの硬さよシ、軟かいン恭奉
部材及び硬い部材とを設けであるので上記チューブ部材
をスライドして移動すれば、長尺の挿入部を有する内視
鏡においても先端側を広範囲、且つ確実に湾曲操作でき
るという効果がある。
As described above, according to the present invention, a flexible bent portion is provided on a part of the tube member that is slidable with the insertion portion provided on the outer periphery of the insertion portion of the endoscope. Since the bending part is provided with a soft conforming member and a hard member to compensate for the bending stiffness of the bending part, by sliding the tube member, it can be used in an endoscope having a long insertion part. Also, the tip side can be bent over a wide range and reliably.

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

第1図及び第2図は、この発明の第1実施例を示し、第
1図は、内視鏡を示す概略正面図、第2図は、湾曲シー
スを示す概略正面図、第3乃至第5図は、第1実施例に
おいて、湾曲シースを内視鏡に装着した状態を示すもの
で、第3図は、挿入部を直線状にする場合の様子を示す
概略断面図、第4図は、挿入部を最も湾曲させた場合の
様子を示す概略断面図、第5図は、小さく湾曲させる場
合の様子を示す概略断面図、第6図は第2実施例におけ
る挿入部先端側の構成を示す概略正面図、第7図及び第
8図は第3実施例に係るもので、第7図は、挿入部先端
側の構成を示す概略正面図、第8図は、第3実施例にお
ける湾曲させた場合の先端側の様子を示す概略断面図で
ある。 1・・・先端部      2・・・軟性のたわみ部2
′・・・硬性のたわみ部  3,13.21・・・硬性
部4.11・・・挿入部    8・・・湾曲シース9
・・・屈曲成形部   10・・・把持部12.22・
・・軟性部 代理人 弁理士 伊 藤  進
1 and 2 show a first embodiment of the present invention, FIG. 1 is a schematic front view showing an endoscope, FIG. 2 is a schematic front view showing a curved sheath, and FIGS. Fig. 5 shows the curved sheath attached to the endoscope in the first embodiment, Fig. 3 is a schematic cross-sectional view showing the case where the insertion section is made straight, and Fig. 4 shows the state in which the curved sheath is attached to the endoscope. , FIG. 5 is a schematic sectional view showing the state when the insertion section is curved to the maximum extent, FIG. 5 is a schematic sectional view showing the state when the insertion section is curved slightly, and FIG. The schematic front view shown, FIGS. 7 and 8 are related to the third embodiment, and FIG. FIG. 3 is a schematic cross-sectional view showing the state of the distal end side when 1...Tip part 2...Soft bending part 2
'... Rigid flexible part 3, 13.21... Rigid part 4.11... Insertion part 8... Curved sheath 9
...Bending part 10...Gripping part 12.22.
...Flexible Department Agent Patent Attorney Susumu Ito

Claims (2)

【特許請求の範囲】[Claims] (1)  内視鏡挿入部の外周に、この挿入部にスライ
ドして嵌脱自在で、先端側に可撓性の屈曲成形部を有す
るチューブ部材を設け、且つ挿入部の一部を該屈曲成形
部のたわみの硬さより、軟かい部材及び硬い部材とで構
成したことを特徴とする内視鏡の湾曲装置。
(1) A tube member is provided on the outer periphery of the endoscope insertion section, which can be slid into and removed from the insertion section, and has a flexible bending section on the distal end side, and a part of the insertion section is formed into the bending section. A bending device for an endoscope, characterized in that the bending device for an endoscope is composed of a softer member and a harder member than the bending hardness of a molded part.
(2)前記挿入部の硬い部材は、可撓性を有する部側又
は有しない部材とすることを特徴とする内視鏡の湾曲装
置。
(2) A bending device for an endoscope, wherein the hard member of the insertion portion is a flexible portion or a non-flexible member.
JP56169805A 1981-10-23 1981-10-23 Curving apparatus of endoscope Granted JPS5869526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56169805A JPS5869526A (en) 1981-10-23 1981-10-23 Curving apparatus of endoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56169805A JPS5869526A (en) 1981-10-23 1981-10-23 Curving apparatus of endoscope

Publications (2)

Publication Number Publication Date
JPS5869526A true JPS5869526A (en) 1983-04-25
JPS6348538B2 JPS6348538B2 (en) 1988-09-29

Family

ID=15893216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56169805A Granted JPS5869526A (en) 1981-10-23 1981-10-23 Curving apparatus of endoscope

Country Status (1)

Country Link
JP (1) JPS5869526A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61273517A (en) * 1985-05-29 1986-12-03 Sumitomo Electric Ind Ltd Curving mechanism for cable
JP2007301376A (en) * 2006-05-11 2007-11-22 Ethicon Endo Surgery Inc Medical instrument having catheter, and using method for catheter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61273517A (en) * 1985-05-29 1986-12-03 Sumitomo Electric Ind Ltd Curving mechanism for cable
JP2007301376A (en) * 2006-05-11 2007-11-22 Ethicon Endo Surgery Inc Medical instrument having catheter, and using method for catheter

Also Published As

Publication number Publication date
JPS6348538B2 (en) 1988-09-29

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