JPH069602Y2 - Flexible tube for endoscope - Google Patents
Flexible tube for endoscopeInfo
- Publication number
- JPH069602Y2 JPH069602Y2 JP1987109814U JP10981487U JPH069602Y2 JP H069602 Y2 JPH069602 Y2 JP H069602Y2 JP 1987109814 U JP1987109814 U JP 1987109814U JP 10981487 U JP10981487 U JP 10981487U JP H069602 Y2 JPH069602 Y2 JP H069602Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- flexible tube
- spiral tube
- thin plate
- bent
- 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
Links
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Description
【考案の詳細な説明】 [産業上の利用分野] この考案は、内視鏡用可撓管、詳しくは内視鏡の挿入部
を構成する可撓管に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a flexible tube for an endoscope, and more particularly, to a flexible tube forming an insertion portion of the endoscope.
[従来の技術] 医療用および工業用の内視鏡は、周知のように操作部本
体とこの操作部本体に連設された挿入部,ライトガイド
ケーブルおよび接眼部等で主要部が構成されている。[Prior Art] As is well known, medical and industrial endoscopes are mainly composed of an operation section body, an insertion section connected to the operation section body, a light guide cable, and an eyepiece section. ing.
第5図は、従来の医療用内視鏡の一例を示したものであ
って、同内視鏡1は操作部本体2とこの操作部本体2に
それぞれ連設された体腔内挿入部3,接眼部8,ライト
ガイドケーブル9とで主に構成されている。上記挿入部
3は操作部本体2に基端部を取り付けられた長尺の可撓
管4と、この可撓管4の先端部に連設された弯曲管5
と、この弯曲管5の先端部に連設された先端構成部6と
で形成されている。上記先端構成部6には観察用窓,対
物レンズを含む観察光学系レンズ,照明用窓を含む照明
光学系、鉗子チャンネル開口部等が設けられており、上
記弯曲管5および可撓管4内にはイメージガイド,ライ
トガイド,鉗子チャンネルチューブおよび弯曲操作ワイ
ヤー等の内蔵物が挿通されている。また、上記操作部本
体2上には弯曲操作用ノブ7a,7bや送気・送水用操
作釦7cおよび鉗子挿入口10等がそれぞれ配設されて
いる。FIG. 5 shows an example of a conventional medical endoscope, in which the endoscope 1 includes an operating portion main body 2 and body cavity insertion portions 3, 3 connected to the operating portion main body 2, respectively. The eyepiece 8 and the light guide cable 9 are mainly included. The insertion portion 3 has a long flexible tube 4 having a proximal end attached to the operation portion main body 2, and a curved tube 5 connected to the distal end of the flexible tube 4.
And a tip forming portion 6 that is connected to the tip of the curved pipe 5. The tip forming section 6 is provided with an observation window, an observation optical system lens including an objective lens, an illumination optical system including an illumination window, a forceps channel opening portion, etc., and inside the curved tube 5 and the flexible tube 4. Internal components such as an image guide, a light guide, a forceps channel tube, and a bending operation wire are inserted through the. Further, on the operation portion main body 2, bending operation knobs 7a and 7b, an air / water feeding operation button 7c, a forceps insertion port 10 and the like are arranged.
そして、このように構成された内視鏡1は、周知の通り
挿入部3が体腔内に挿入され、その先端構成部6の照明
用窓から体腔内患部を照明し、同患部を観察用窓を通じ
て接眼部8で観察するようになっている。In the endoscope 1 configured as described above, the insertion portion 3 is inserted into the body cavity, as is well known, and the affected portion in the body cavity is illuminated from the illumination window of the distal end forming portion 6, and the affected portion is observed through the observation window. Through the eyepiece section 8.
ところで、上記挿入部3を構成する長尺の可撓管4は、
第6図にその一部拡大断面を示すように、帯板状の弾性
金属薄板を螺旋状に巻回したフレックスと呼ばれる螺旋
管11と、この螺旋管11の上に被覆されたブレードと
呼ばれる網状管12と、この網状管12の上に被覆され
た合成樹脂等の外皮13とで形成されており、上記金属
螺旋管11は第7図に示す如く、帯状板の素材を一定の
ピッチで螺旋状に巻回して構成されている。By the way, the long flexible tube 4 constituting the insertion portion 3 is
As shown in a partially enlarged cross-section in FIG. 6, a spiral tube 11 called a flex in which a strip-shaped elastic metal thin plate is spirally wound, and a net-like shape called a blade coated on the spiral tube 11 are formed. As shown in FIG. 7, the metal spiral tube 11 is formed of a tube 12 and an outer cover 13 made of synthetic resin or the like coated on the mesh tube 12. The metal spiral tube 11 is formed by spirally forming a strip plate material at a constant pitch. It is configured by winding in a shape.
また、このほか光ファイバー等の保護チューブとして実
開昭59−7406号公報に開示されているものや、実
開昭62−81923号公報に開示されているものが知
られている。In addition to this, as protective tubes for optical fibers and the like, those disclosed in Japanese Utility Model Publication No. 59-7406 and Japanese Utility Model Publication No. 62-81923 are known.
[考案が解決しようとする問題点] ところが、上記のように構成される可撓管4を製造する
段階においては、上記螺旋管11に網状管12を被せ、
これに合成樹脂の外皮13を押出成形により被覆する
と、上記螺旋管11の各巻回部同士のピッチの隙間11
a(第7図参照)から外皮樹脂が螺旋管11内部に進入
するので、この進入を防止するために、従来のもので
は、螺旋管11の内部に合成ゴムの芯材を挿入するよう
にしていた。[Problems to be Solved by the Invention] However, at the stage of manufacturing the flexible tube 4 configured as described above, the spiral tube 11 is covered with the mesh tube 12,
When the outer cover 13 made of synthetic resin is coated on this by extrusion molding, the gaps 11 in the pitch between the winding parts of the spiral tube 11 are formed.
Since the outer resin enters the inside of the spiral tube 11 from a (see FIG. 7), in order to prevent this entry, in the conventional one, a synthetic rubber core material is inserted into the inside of the spiral tube 11. It was
しかしこの芯材の出し入れは、大変厄介な作業で製造工
程を増やすばかりでなく、芯材の長さが限られるため、
一挙に長尺の可撓管を製造することができないという欠
点を有していた。However, taking in and out of the core material not only increases the number of manufacturing steps by a very troublesome work, but also limits the length of the core material,
It has a drawback that a long flexible tube cannot be manufactured all at once.
また、上記実開昭59−7406号公報に開示されてい
る保護チューブは、外周に連続した螺旋溝を有した保護
管のみの単体で可撓管を構成するものであるから、外皮
樹脂が管内に進入するような問題はないし、更に上記実
開昭62−81923号公報に記載のファイバースコープ
は、螺旋管を使用せずに短管を複数個、組合わせて形成
したインターロックチューブを使用しているので、上記
第7図に示した螺旋管とは異なるものである。Further, since the protective tube disclosed in Japanese Utility Model Laid-Open No. 59-7406 constitutes a flexible tube only by a protective tube having a continuous spiral groove on the outer periphery, the outer coat resin is inside the tube. In addition, the fiberscope described in Japanese Utility Model Laid-Open No. 62-81923 uses an interlock tube formed by combining a plurality of short tubes without using a spiral tube. Therefore, it is different from the spiral tube shown in FIG.
従って、本考案の目的は、螺旋管と網状管と外皮とで構
成される可撓管において、螺旋管内に外皮樹脂進入防止
用の芯材を入れることなく、可撓管を製造し得る内視鏡
用可撓管を提供するにある。Therefore, an object of the present invention is to provide a flexible tube including a spiral tube, a mesh tube, and an outer sheath, which can manufacture the flexible tube without inserting a core material for preventing outer resin penetration into the spiral tube. A flexible tube for a mirror is provided.
[問題点を解決するための手段および作用] 本考案は、上記問題点を解決するために、 帯状の弾性金属薄板を螺旋状に巻回した螺旋管と、この
螺旋管の上に被覆される網状管と、この網状管の上に被
覆される合成樹脂等の外皮とで構成された内視鏡用可撓
管において、 上記帯状の弾性金属薄板を、その両側縁部に鋭角に折れ
曲がった折曲部を設けることで断面がZ状となるように
形成すると共に、隣接する弾性金属薄板の前記折曲部同
士を係合させ、前記弾性金属薄板を螺旋状に巻回したと
き、その隣接する巻回部同士の間に隙間が生じないよう
にしたことを特徴とする。[Means and Actions for Solving Problems] In order to solve the above problems, the present invention provides a spiral tube in which a band-shaped elastic metal thin plate is spirally wound, and is coated on the spiral tube. A flexible tube for an endoscope comprising a mesh tube and an outer cover made of synthetic resin or the like coated on the mesh tube, wherein the strip-shaped elastic metal thin plate is bent at both side edges thereof at an acute angle. The bent portion is formed so as to have a Z-shaped cross section, and the bent portions of adjacent elastic metal thin plates are engaged with each other, and when the elastic metal thin plates are spirally wound, they are adjacent to each other. It is characterized in that no gap is formed between the winding parts.
[実 施 例] 以下、図示の実施例により本考案を説明する。[Examples] Hereinafter, the present invention will be described with reference to illustrated examples.
第1図は、本考案の前提となる可撓管14の一部拡大断
面図である。この可撓管14における螺旋管15は、帯
状の弾性金属薄板の両側縁部に、同帯状薄板を螺旋状に
巻回したとき、その隣接する巻回部同士の間に隙間が生
じないように、巻回部同士を互いに弯曲自在に連結する
折曲係合部15a,15bがそれぞれ形成された帯状薄
板で構成されている。FIG. 1 is a partially enlarged sectional view of a flexible tube 14 which is a premise of the present invention. The spiral tube 15 of the flexible tube 14 is such that when the strip-shaped thin metal plate is spirally wound on both side edges of the strip-shaped elastic metal thin plate, no gap is generated between the adjacent winding portions. , Is composed of a strip-shaped thin plate on which bent engaging portions 15a and 15b for connecting the winding portions to each other flexibly are formed.
即ち、第2図に上記帯状弾性金属薄板の螺旋管15の一
部拡大図を示すように、同帯状薄板の左側縁部(第2図
において)には上方に向けて略直角に折り曲げられた折
曲係合部15aが形成され、右側縁部(第2図におい
て)には下方に向けてチャンネル溝が形成されるように
断面“コ”の字型の折曲係合部15bが形成されてい
る。このように形成された帯状薄板を、第2,3図に示
す如く、螺旋管状に巻回する際に上記左側縁部の折曲係
合部15aが上記右側縁部の折曲係合部15b内に係合
するようにして巻回する。すると、巻回部同士の間には
ピッチの隙間は形成されなくなる。That is, as shown in FIG. 2 which is a partially enlarged view of the spiral tube 15 of the strip-shaped elastic metal thin plate, the left edge (in FIG. 2) of the strip-shaped thin metal plate is bent at a substantially right angle upward. A bent engaging portion 15a is formed, and a right side edge (in FIG. 2) is formed with a bent engaging portion 15b having a U-shaped cross section so that a channel groove is formed downward. ing. As shown in FIGS. 2 and 3, when the strip-shaped thin plate thus formed is wound into a spiral tube shape, the bent engaging portion 15a at the left side edge portion is bent at the bent engaging portion 15b at the right side edge portion. It is wound so as to engage with the inside. Then, no pitch gap is formed between the winding portions.
従って、この螺旋管15の上に第1図に示すように、網
状管16を被覆し、しかるのち、合成樹脂の外皮17を
押出成形によって被覆しても、螺旋管15にはそのピッ
チの隙間がないので螺旋管15の内部に外皮樹脂が進入
するようなことがなく、従来の欠点を解消することがで
きる。Therefore, even if the mesh tube 16 is coated on the spiral tube 15 as shown in FIG. 1 and then the outer cover 17 made of synthetic resin is coated by extrusion molding, the spiral tube 15 has a gap of the pitch. Since it does not exist, the outer resin does not enter the inside of the spiral tube 15, and the conventional drawbacks can be solved.
第4図は、本考案の一実施例例を示す一部拡大図であ
る。この螺旋管18を構成する帯状弾性金属薄板は、同
帯状薄板の左側縁部に下方に向けて鋭角に折り曲げた折
曲係合部18aが、また右側縁部には上記折曲係合部1
8aと対称的に上方に向けて鋭角に折り曲げた折曲係合
部18bがそれぞれ形成された断面形状が横Z状を呈す
るように成形されていて、この帯板を螺旋状に巻回する
際に、隣接する巻回部同士の折曲係合部18a,18b
を互いに係合させて巻回する。かくすれば巻回部同士の
間にはピッチの隙間は形成されず、かつ各巻回部同士は
弯曲自在に連結される。FIG. 4 is a partially enlarged view showing an embodiment of the present invention. The strip-shaped elastic metal thin plate forming the spiral tube 18 has a bent engagement portion 18a bent downward at an acute angle at the left edge portion of the strip thin plate, and the bent engagement portion 1 at the right edge portion.
8a is symmetrically bent upward and is bent to form an acute angle, and the bent engaging portions 18b are formed so as to have a transverse Z-shape in cross section. The bent engaging portions 18a, 18b between the adjacent winding portions.
Are engaged with each other and wound. Thus, no pitch gap is formed between the winding parts, and the winding parts are flexibly connected to each other.
このように形成した螺旋管18の上に網状管を被せ、こ
れに合成樹脂の外皮を押出成形により被覆するが、この
際、螺旋管18には外皮樹脂の進入する隙間はないの
で、螺旋管18内に外皮樹脂が入るようなことがなく、
従来の欠点を解決することができる。The spiral tube 18 formed in this way is covered with a mesh tube, and the outer shell of the synthetic resin is covered therewith by extrusion molding. At this time, since there is no gap for the outer shell resin to enter into the spiral tube 18, the spiral tube 18 is There is no such thing as outer skin resin inside 18,
The conventional drawbacks can be solved.
このように前記実施例によれば、外皮樹脂の螺旋管内部
への浸み込みを容易に防止でき、帯状の弾性金属薄板を
断面横Z形状にすることは、曲げ部分が2か所で良くZ
形状が容易に得られるし、また、断面横Z形状の帯板を
螺旋管にする場合、その一側縁部の折曲部に沿って次の
巻回部の他側縁部の折曲部が位置決めされるため、正確
にしかも簡単に加工することができる。また、螺旋管の
係合部の外周を網状管で押さえているので、螺旋管はそ
の軸方向にズレ難く、長さと径の規制が極めて容易にな
る等の顕著な効果が発揮される。As described above, according to the above-described embodiment, it is possible to easily prevent the outer cover resin from infiltrating into the inside of the spiral tube, and to make the strip-shaped elastic metal thin plate into the Z-shaped cross section, it is enough to have two bent portions. Z
The shape can be easily obtained, and when a strip plate having a Z-shaped cross section is used as a spiral tube, the bent portion of the other winding side edge is wound along the bent portion of the one winding side edge. Since it is positioned, it can be processed accurately and easily. Further, since the outer periphery of the engaging portion of the spiral tube is pressed by the mesh tube, the spiral tube is less likely to be displaced in the axial direction, and the remarkable effects such as the extremely easy regulation of the length and the diameter are exhibited.
また、上記螺旋管15,18等の異型状の螺旋管は、異
型状に成形された帯板状の素材で製作されるので、上記
実施例の形状に限定されず、これらと同等の作用,効果
を発揮する形状であればどのような形状のものでも作製
することができる。Further, since the atypical spiral tubes such as the above-mentioned spiral tubes 15 and 18 are made of a strip-shaped material formed in an atypical shape, they are not limited to the shapes of the above-mentioned embodiment, and the same operation as these, Any shape can be produced as long as it is effective.
従って、本案の螺旋管の折曲係合部の形状は上記実施例
のものに限定されるものでないことは言うまでもない。Therefore, it goes without saying that the shape of the bent engaging portion of the spiral tube of the present invention is not limited to that of the above embodiment.
[考案の効果] 以上述べたように本考案によれば螺旋管の巻回部同士の
間に隙間を生じないので、従来のもののように、螺旋管
内に外皮樹脂進入防止用の芯材を入れる作業工程を無く
すことができ、従って、製造時間が短縮される許りでな
く、一回の製造工程で、長尺の長い可撓管を一挙に製作
することができ、これを定寸法に切断して多数本の可撓
管を得ることができる。[Effect of the Invention] As described above, according to the present invention, since no gap is formed between the winding portions of the spiral tube, a core material for preventing the resin penetration of the outer shell is inserted into the spiral tube unlike the conventional one. Since the work process can be eliminated, the manufacturing time is not allowed to be shortened, and a long flexible tube can be manufactured at once in one manufacturing process, and this is cut into a fixed size. Thus, a large number of flexible tubes can be obtained.
このように一挙に長尺の可撓管を作製することができる
ということは、10m前後の非常に長い可撓管を必要と
する工業用内視鏡には大変有効である。The fact that a long flexible tube can be manufactured at once is very effective for an industrial endoscope that requires a very long flexible tube of about 10 m.
第1図は、本考案の前提となる内視鏡用可撓管の一部拡
大断面図、 第2図は、上記第1図の可撓管に用いられている螺旋管
の上半部のみを示す拡大断面図、 第3図は、上記第1図の可撓管に用いられている螺旋管
の斜視図、 第4図は、一実施例を示す内視鏡用可撓管における螺旋
管の一部拡大断面図、 第5図は、医療用内視鏡の一例を示す斜視図、 第6図は従来の内視鏡用可撓管の一部拡大断面図、 第7図は、上記第6図の可撓管に用いられている螺旋管
の斜視図である。 4,14……可撓管 11,15,18……螺旋管(フレックス) 12,16……網状管(ブレード) 13,17……外皮 15a,15b、18a,18b……折曲係合部FIG. 1 is a partially enlarged sectional view of a flexible tube for an endoscope which is a premise of the present invention, and FIG. 2 is only an upper half of a spiral tube used in the flexible tube of FIG. FIG. 3 is an enlarged cross-sectional view showing the spiral tube used in the flexible tube of FIG. 1, and FIG. 4 is a spiral tube in the flexible tube for an endoscope showing an embodiment. FIG. 5 is a perspective view showing an example of a medical endoscope, FIG. 6 is a partially enlarged cross-sectional view of a conventional flexible tube for an endoscope, and FIG. It is a perspective view of the spiral tube used for the flexible tube of FIG. 4, 14 ... Flexible tube 11, 15, 18 ... Spiral tube (flex) 12, 16 ... Reticulated tube (blade) 13, 17 ... Outer skin 15a, 15b, 18a, 18b ..
Claims (1)
旋管と、この螺旋管の上に被覆される網状管と、この網
状管の上に被覆される合成樹脂等の外皮とで構成された
内視鏡用可撓管において、 上記帯状の弾性金属薄板を、その両側縁部に鋭角に折れ
曲がった折曲部を設けることで断面がZ状となるように
形成すると共に、隣接する弾性金属薄板の前記折曲部同
士を係合させ、前記弾性金属薄板を螺旋状に巻回したと
き、その隣接する巻回部同士の間に隙間が生じないよう
にしたことを特徴とする内視鏡用可撓管。1. A spiral tube in which a strip-shaped elastic metal thin plate is spirally wound, a mesh tube covered on the spiral tube, and an outer cover made of synthetic resin or the like covered on the mesh tube. In the configured flexible tube for an endoscope, the strip-shaped elastic metal thin plate is formed so as to have a Z-shaped cross section by providing bent portions bent at both side edges at acute angles, and adjacent to each other. The bent portions of the elastic metal thin plate are engaged with each other, and when the elastic metal thin plate is spirally wound, a gap is not formed between the adjacent wound portions. Flexible tube for endoscopes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987109814U JPH069602Y2 (en) | 1987-07-17 | 1987-07-17 | Flexible tube for endoscope |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987109814U JPH069602Y2 (en) | 1987-07-17 | 1987-07-17 | Flexible tube for endoscope |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6417204U JPS6417204U (en) | 1989-01-27 |
JPH069602Y2 true JPH069602Y2 (en) | 1994-03-16 |
Family
ID=31346405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987109814U Expired - Lifetime JPH069602Y2 (en) | 1987-07-17 | 1987-07-17 | Flexible tube for endoscope |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH069602Y2 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5542816A (en) * | 1978-09-22 | 1980-03-26 | Kazutaka Fukushima | Manufacture of flexible pipe |
JPS594641U (en) * | 1982-07-01 | 1984-01-12 | 日本電気ホームエレクトロニクス株式会社 | connector |
JPS6235316A (en) * | 1985-08-09 | 1987-02-16 | Olympus Optical Co Ltd | Encoscope |
-
1987
- 1987-07-17 JP JP1987109814U patent/JPH069602Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS6417204U (en) | 1989-01-27 |
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