JPH0348804B2 - - Google Patents
Info
- Publication number
- JPH0348804B2 JPH0348804B2 JP59191141A JP19114184A JPH0348804B2 JP H0348804 B2 JPH0348804 B2 JP H0348804B2 JP 59191141 A JP59191141 A JP 59191141A JP 19114184 A JP19114184 A JP 19114184A JP H0348804 B2 JPH0348804 B2 JP H0348804B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- adhesive
- flexible tube
- endoscope
- flexible
- 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
- 239000000853 adhesive Substances 0.000 claims description 20
- 230000001070 adhesive effect Effects 0.000 claims description 20
- 239000011295 pitch Substances 0.000 claims description 4
- 239000011162 core material Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、たとえば気管支用内視鏡等の内視鏡
における可撓管の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to improvements in flexible tubes in endoscopes such as bronchial endoscopes.
従来、内視鏡の可撓管は、金属製の弾性薄帯を
ら旋状に巻成したら旋管と、これの外周に被嵌す
る金属あるいは非金属細線を編成した網管と、最
外周部に成形される合成樹脂等からなる外皮とか
ら構成されている。そして、一般に、気管支用内
視鏡のように細径内視鏡における上記ら旋管は、
可撓管の強度上、２重にしてあるが、これでは、
可撓管をより細径化することは難かしい。しか
し、細径化のため、一重にすると、可撓管の強度
が保てず、特に、内視鏡挿入時、たとえば気管支
鏡ではその手技上ねじりや圧縮の大きな力が加わ
る。そして、可撓管の根元部付近でら旋管、網
管、外皮の座屈が生じやすい。
Conventionally, the flexible tube of an endoscope consists of a helically wound metal elastic ribbon, a mesh tube made of thin metal or non-metal wires fitted around the outer circumference of the spiral tube, and a mesh tube made of thin metal or non-metal wires fitted around the outer circumference of the tube. It consists of an outer skin made of synthetic resin, etc., which is molded into In general, the spiral tube in a small diameter endoscope such as a bronchial endoscope is
Due to the strength of the flexible tube, it is doubled, but in this case,
It is difficult to make the flexible tube smaller in diameter. However, if the flexible tube is made single-ply to reduce its diameter, the strength of the flexible tube cannot be maintained, and in particular, when inserting an endoscope, for example, in a bronchoscope, a large force of twisting or compression is applied due to the procedure. In addition, buckling of the spiral tube, mesh tube, and outer skin is likely to occur near the root of the flexible tube.
また、特公昭58−27931号公報に開示されたも
のとしてら旋管、網管、外皮の間に接着剤を操作
部本体側から先端部に向つて徐々に薄くなるよう
塗布したものがある。 Furthermore, Japanese Patent Publication No. 58-27931 discloses a device in which an adhesive is applied between the spiral tube, the mesh tube, and the outer skin so that the adhesive becomes gradually thinner from the operating section main body side toward the tip end.
しかし、この形式のものは、所望する可撓性は
出しにくゝ、また先端部側も硬くなり、患者の苦
痛が増大したり、挿入性が低下したりするという
欠点がある。 However, this type of device has the disadvantage that it is difficult to achieve the desired flexibility, and the distal end side is also hard, increasing patient pain and reducing insertability.
本発明は、上記事情に着目してなされたもの
で、その目的とするところは、先端側の可撓性を
低下させることなく、基端側での座屈等の発生を
防止し、かつ細径化が確保できる内視鏡の可撓管
を提供することにある。
The present invention has been made in view of the above-mentioned circumstances, and its purpose is to prevent the occurrence of buckling on the proximal end without reducing the flexibility of the distal end, and to prevent the occurrence of buckling on the proximal end. An object of the present invention is to provide a flexible tube for an endoscope that can ensure diameter reduction.
本発明は、可撓管の基端よりその可撓管の中途
まで、ら旋管と網管との間、網管と外皮との間、
及び前記ら旋管の素材たる弾性薄帯のピツチ間
に、接着剤を充填してその基端側における強度を
上げ、座屈を発生しないようにした内視鏡の可撓
管である。
The present invention provides the following features: from the proximal end of the flexible tube to the middle of the flexible tube, between the spiral tube and the mesh tube, between the mesh tube and the outer skin,
and a flexible tube for an endoscope in which an adhesive is filled between the pitches of the elastic ribbon that is the material of the spiral tube to increase the strength on the proximal end side and prevent buckling.
以下、本発明の一実施例を図面にもとづいて説
明する。
Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図は、細径内視鏡としての一例である気管
支用内視鏡１を示す。この内視鏡１は、操作部２
と長尺な挿入部３とからなり、さらに操作部２に
は可撓管からなるライトガイドケーブル５が連結
されている。操作部２には、操作レバー６と接眼
部７が設けられている。 FIG. 1 shows a bronchial endoscope 1, which is an example of a small-diameter endoscope. This endoscope 1 has an operation section 2
and a long insertion section 3, and a light guide cable 5 made of a flexible tube is connected to the operation section 2. The operating section 2 is provided with an operating lever 6 and an eyepiece section 7.
上記挿入部３は、その基端側に可撓管９を配置
し、この可撓管９の先端に湾曲管１０を介して先
端部１１を連結してなるものである。そして、上
記湾曲管１０は、操作部２の操作レバー６により
遠隔的に湾曲操作されるようになつている。 The insertion section 3 has a flexible tube 9 disposed at its proximal end, and a distal end portion 11 is connected to the distal end of the flexible tube 9 via a curved tube 10. The bending tube 10 is configured to be bent remotely by a control lever 6 of the control section 2.
次に、上記可撓管９の構造は、第３図および第
４図で示すようになつている。すなわち、金属製
の弾性薄帯１２をら旋状に巻いて管状にしたら旋
管１３を潰れ防止用の芯材としてなり、このら旋
管１３の外周には、金属あるいは非金属細線を編
成した網管１４が被嵌される。さらに、この網管
１４の外周には、柔軟性のある合成樹脂等からな
る外皮１５が被覆されている。このように構成さ
れた可撓管９の基端部は、操作部２の接続用口金
１６に取付け固定されている。つまり、ら旋管１
３と網管１４との重合部外周に上記口金１６を被
嵌するとともに、これらを半田や接着剤により固
着する。さらに、外皮１５の基端部分は、口金１
６の外周に被嵌して接着剤などで固着してある。 Next, the structure of the flexible tube 9 is as shown in FIGS. 3 and 4. That is, if the metal elastic ribbon 12 is spirally wound to form a tube, a spiral tube 13 is used as a core material to prevent crushing, and metal or non-metal thin wires are knitted around the outer periphery of the spiral tube 13. A mesh pipe 14 is fitted. Further, the outer periphery of the net pipe 14 is covered with an outer skin 15 made of flexible synthetic resin or the like. The proximal end portion of the flexible tube 9 configured in this manner is attached and fixed to the connection base 16 of the operating section 2. In other words, spiral tube 1
The cap 16 is fitted onto the outer periphery of the overlapping portion of the mesh pipe 14 and the mesh pipe 14, and these are fixed with solder or adhesive. Furthermore, the base end portion of the outer skin 15 is connected to the base 1 of the base 1
It is fitted onto the outer periphery of 6 and fixed with adhesive or the like.
また、上記ら旋管１３、細管１４および外皮１
５の３部材は、操作部２側基端から中途までｌの
長さにわたり、シリコン等の接着剤１７により接
着固定されている。このとき接着剤１７は、第４
図で示すように網管１４の網目内に充填されるの
みならず、ら旋管１３の素材たる弾性薄帯１２の
ピツチ間にも入り込んでいる。そして、この実施
例では特にら旋管１３の素材たる弾性薄帯１２の
内面と同一面となるように接着剤１７は充填され
ている。なお、接着剤１７が充填される範囲の上
記長さｌは、たとえば第２図で示すように検査使
用時において体腔内に挿入されずに外に露出して
位置する長さに設定されている。 In addition, the spiral tube 13, the thin tube 14 and the outer skin 1
The three members 5 are adhesively fixed with an adhesive 17 such as silicone over a length l from the base end on the operation part 2 side to the middle. At this time, the adhesive 17
As shown in the figure, it is not only filled in the mesh of the mesh tube 14, but also inserted between the pitches of the elastic ribbon 12, which is the material of the spiral tube 13. In this embodiment, the adhesive 17 is filled so as to be flush with the inner surface of the elastic ribbon 12, which is the raw material of the spiral tube 13. The length l of the range filled with the adhesive 17 is set to a length such that the adhesive 17 is not inserted into the body cavity but is exposed to the outside during testing, as shown in FIG. 2, for example. .
また、可撓管９の操作部２側基端外周には、ゴ
ムなどの弾性材料からなる折止めチユーブ１８が
被嵌されている。この折止めチユーブ１８の基端
は、操作部２に取付け固定されている。 Further, a bendable tube 18 made of an elastic material such as rubber is fitted onto the outer periphery of the proximal end of the flexible tube 9 on the operating portion 2 side. The proximal end of this folding tube 18 is attached and fixed to the operating section 2.
しかして、上記可撓管９は、操作部２側基端か
ら中途までの長さｌにわたり、そのら旋管１３、
網管１４および外皮１５の３部材は、これらの間
に充填する接着剤１７により接着固定するため、
座屈に対してきわめて強くなる。さらに、接着剤
１７は、ら旋管１３の素材たる弾性薄帯１２のピ
ツチ間において、第３図および第４図に示すよう
に、弾性薄帯１２の内面と同一面となる程度にま
で充填されているため、軸方向の耐座屈性はさら
に強化される。つまり、内視鏡１を使用すると
き、可撓管９の操作部２側基端付近（第２図中ｌ
で示す。）には、圧縮力やねじり応力が一番大き
く加わり、本来、可撓管９の座屈が発生し易い
が、上記構造によると、圧縮力やねじり力等に対
して強くなるため、座屈は発生しなくなる。しか
も、座屈を有効に防止できるので、より強く挿入
部３を押し込み、またはねじることが可能であ
り、挿入操作性を向上できる。 Thus, the flexible tube 9 has a length l from the base end on the operating section 2 side to the middle, and the helical tube 13,
The three members, the mesh pipe 14 and the outer skin 15, are adhesively fixed with the adhesive 17 filled between them.
Extremely strong against buckling. Furthermore, the adhesive 17 is filled between the pitches of the elastic ribbon 12, which is the material of the spiral tube 13, to the extent that it is flush with the inner surface of the elastic ribbon 12, as shown in FIGS. 3 and 4. This further strengthens the buckling resistance in the axial direction. In other words, when using the endoscope 1, near the proximal end of the flexible tube 9 on the operating section 2 side (l in FIG.
Indicated by ) is subjected to the largest compressive force and torsional stress, and the flexible tube 9 is naturally prone to buckling, but according to the above structure, it is strong against compressive force and torsional force, so buckling does not occur. will no longer occur. Moreover, since buckling can be effectively prevented, the insertion portion 3 can be pushed in or twisted more strongly, and insertion operability can be improved.
一方、上記接着剤１７を充填した範囲ｌは、第
２図で示すように通常患者の体外にあるので、そ
の硬さにより患者に苦痛を与えることはない。そ
して、細径化のため、ら旋管１３を一重にした細
径の内視鏡、たとえば気管支内視鏡は、その可撓
管９の基端側が座屈しやすいが、この場合におい
て特にすぐれた効果を発揮する。 On the other hand, since the area l filled with the adhesive 17 is normally located outside the patient's body as shown in FIG. 2, its hardness does not cause pain to the patient. In order to reduce the diameter, a small-diameter endoscope with a single spiral tube 13, such as a bronchoscope, tends to buckle at the proximal end of the flexible tube 9. be effective.
なお、上記接着剤１７を可撓管９の全長にわた
つて充填するとともに、先端側にはより軟性の接
着剤を充填し、基端側にはより硬性の接着剤を充
填することも考えたが、先端側のより柔軟な可撓
性を確保するため、基端側部分のみに接着剤を充
填したものである。 In addition to filling the entire length of the flexible tube 9 with the adhesive 17, we also considered filling the distal end with a softer adhesive and the proximal end with a harder adhesive. However, in order to ensure greater flexibility on the distal end side, only the proximal end portion is filled with adhesive.
以上説明したように本発明によれば、可撓管の
先端側部分の可撓性を低下させることなく、特に
座屈しやすい基端側の強度を高め、その座屈等の
発生を防止し、挿入操作性を向上できる。しか
も、接着剤を部材間に充填する簡単な手段で達成
でき経済的である。さらに、可撓管自体の径を何
ら太くする必要がなく、特に、細径内視鏡に好適
する。
As explained above, according to the present invention, the strength of the proximal end, which is particularly prone to buckling, is increased without reducing the flexibility of the distal end portion of the flexible tube, thereby preventing the occurrence of buckling, etc. Insertion operability can be improved. Moreover, it is economical because it can be achieved by a simple method of filling adhesive between the members. Furthermore, there is no need to increase the diameter of the flexible tube itself, making it particularly suitable for small-diameter endoscopes.
図面は本発明の一実施例を示すもので、第１図
はその内視鏡全体の側面図、第２図はその内視鏡
の使用状態図、第３図は内視鏡の可撓管基端付近
の側断面図、第４図は第３図中部の拡大断面図
である。
１……内視鏡、２……操作部、３……挿入部、
９……可撓管、１２……弾性薄帯、１３……ら旋
管、１４……網管、１５……外皮、１７……接着
剤。
The drawings show one embodiment of the present invention; Fig. 1 is a side view of the entire endoscope, Fig. 2 is a diagram of the endoscope in use, and Fig. 3 is a flexible tube of the endoscope. FIG. 4 is a side sectional view of the vicinity of the base end, and FIG. 4 is an enlarged sectional view of the middle part of FIG. 1... Endoscope, 2... Operation section, 3... Insertion section,
9...Flexible tube, 12...Elastic ribbon, 13...Helical tube, 14...Mesh pipe, 15...Sheath, 17...Adhesive.
Claims (1)
回して形成したら旋管と、このら旋管の外周に被
嵌される網管と、最外殻に配設される外皮とから
なる内視鏡の可撓管において、上記可撓管の基端
よりその可撓管の中途まで、ら旋管と網管との
間、網管と外皮との間、及び上記弾性薄帯のピツ
チ間に接着剤を充填したことを特徴とする内視鏡
の可撓管。1 Once formed by winding an elastic ribbon in a spiral shape as a core material for crush prevention, it consists of a spiral tube, a mesh tube fitted around the outer periphery of this spiral tube, and an outer skin disposed on the outermost shell. In the flexible tube of the endoscope, from the proximal end of the flexible tube to the middle of the flexible tube, between the spiral tube and the mesh tube, between the mesh tube and the outer skin, and between the pitches of the elastic ribbon. A flexible endoscope tube characterized by being filled with adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59191141A JPS6168026A (en) | 1984-09-12 | 1984-09-12 | Flexible tube of endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59191141A JPS6168026A (en) | 1984-09-12 | 1984-09-12 | Flexible tube of endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6168026A JPS6168026A (en) | 1986-04-08 |
| JPH0348804B2 true JPH0348804B2 (en) | 1991-07-25 |
Family
ID=16269570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59191141A Granted JPS6168026A (en) | 1984-09-12 | 1984-09-12 | Flexible tube of endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6168026A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63230141A (en) * | 1987-03-20 | 1988-09-26 | オリンパス光学工業株式会社 | Endoscope |
| JPH01122701U (en) * | 1988-02-18 | 1989-08-21 | ||
| JP3265890B2 (en) * | 1995-01-13 | 2002-03-18 | 富士写真光機株式会社 | Flexible portion of insertion member and method of manufacturing the same |
| JP3967422B2 (en) * | 1997-05-13 | 2007-08-29 | ペンタックス株式会社 | Endoscope optical fiber bundle |
| JP2007050118A (en) * | 2005-08-18 | 2007-03-01 | Pentax Corp | Flexible tube for endoscope |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5827931A (en) * | 1981-08-13 | 1983-02-18 | Kawasaki Steel Corp | Production of black plate for tin plate and tin-free steel plate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5779501U (en) * | 1980-10-31 | 1982-05-17 |
-
1984
- 1984-09-12 JP JP59191141A patent/JPS6168026A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5827931A (en) * | 1981-08-13 | 1983-02-18 | Kawasaki Steel Corp | Production of black plate for tin plate and tin-free steel plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6168026A (en) | 1986-04-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |