JPH0519043Y2 - - Google Patents
Info
- Publication number
- JPH0519043Y2 JPH0519043Y2 JP16230787U JP16230787U JPH0519043Y2 JP H0519043 Y2 JPH0519043 Y2 JP H0519043Y2 JP 16230787 U JP16230787 U JP 16230787U JP 16230787 U JP16230787 U JP 16230787U JP H0519043 Y2 JPH0519043 Y2 JP H0519043Y2
- Authority
- JP
- Japan
- Prior art keywords
- endoscope
- tube
- flexible tube
- diameter
- mesh
- 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
- 239000002184 metal Substances 0.000 claims description 25
- 229920000914 Metallic fiber Polymers 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 1
- 229920002994 synthetic fiber Polymers 0.000 description 21
- 239000012209 synthetic fiber Substances 0.000 description 21
- 239000000835 fiber Substances 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は、内視鏡用可撓管、詳しくは、金属の
帯状板材からなる螺旋管と、この螺旋管の外周に
被覆された、金属素線と非金属繊維素線とで編組
された網管と、この網管の外周に被覆された外皮
とで構成された内視鏡用可撓管に関する。[Detailed description of the invention] [Industrial application field] The present invention is a flexible tube for an endoscope, specifically, a spiral tube made of a metal strip plate material, and a metal coated on the outer periphery of the spiral tube. The present invention relates to a flexible tube for an endoscope, which is composed of a mesh tube braided with strands and non-metallic fiber strands, and an outer skin covering the outer periphery of the mesh tube.
［従来の技術］
周知のように、内視鏡の体腔内挿入部の主体を
構成する可撓管は、内視鏡の使用時には体腔内へ
の挿入と抜去が繰り返される。この時可撓管には
曲げや捩り等による力が頻繁にかかるため、外皮
と網管との間で剥離が生じ易く、剥離が生ずる
と、外周面に凹凸による皺が生じたり、その部分
が極端に柔かくなつたりして体腔内への良好な挿
入性が悪化するという不都合があつた。そのため
に、特開昭59−36号公報に示されるように、金属
素線に外皮との接着性の良い合成繊維を加えて混
紡にした網管について提案されている。[Prior Art] As is well known, a flexible tube that constitutes the main body of the body cavity insertion portion of an endoscope is repeatedly inserted into and removed from the body cavity when the endoscope is used. At this time, the flexible tube is frequently subjected to forces such as bending and twisting, so peeling easily occurs between the outer skin and the mesh tube. There was a disadvantage that the material became soft and difficult to insert into a body cavity. To this end, as disclosed in Japanese Patent Application Laid-Open No. 59-36, a mesh pipe is proposed in which synthetic fibers having good adhesion to the outer skin are added to metal wires to form a blend.
［考案が解決しようとする問題点］
ところで、上述したように、金属素線に外皮と
の接着性の良い合成繊維を加えて網管を混紡で形
成した場合には、合成繊維は強度的にはステンレ
ス等の金属素線に劣るので、どうしても合成繊維
を必然的に太い径のものにして強度を補なうこと
になる。そのために外皮との密着性は強化された
ものの、合成繊維を太径にしたことによつて網管
の厚味が増加して、可撓管そのものの外径がそれ
に伴つて増加してしまうという欠点が生じる。即
ち、第６図に示すように、金属素線２１と合成繊
維２２との混紡繊維束２０によつて網管１８を構
成した場合、金属素線２１の径をd1、合成繊維２
２の径をd2とすると、d2＞d1とするので、網管１
８の編組の厚味は2d2となり、金属素線２１だけ
で網管を構成した場合の厚味2d1に比し、（d2−
d1）×２だけが厚味が増加することになる。[Problems to be solved by the invention] By the way, as mentioned above, when synthetic fibers with good adhesion to the outer skin are added to metal wires to form a mesh pipe, the synthetic fibers do not have sufficient strength in terms of strength. Since it is inferior to metal wires such as stainless steel, it is necessary to use synthetic fibers with a thicker diameter to compensate for the strength. As a result, the adhesion with the outer skin has been strengthened, but the drawback is that the thickness of the mesh tube increases due to the increased diameter of the synthetic fibers, and the outer diameter of the flexible tube itself increases accordingly. occurs. That is, as shown in FIG. 6, when the mesh tube 18 is constructed of a blended fiber bundle 20 of metal wires 21 and synthetic fibers 22, the diameter of the metal wires 21 is d 1 and the synthetic fibers 2
If the diameter of pipe 2 is d 2 , then d 2 > d 1 , so mesh pipe 1
The thickness of the braid of No. 8 is 2d 2 , which is (d 2 −
Only d 1 ) x 2 will increase the thickness.
このように、網管の厚味が増加すると、必然的
に可撓管の外径が大きくなり、内視鏡としての挿
入性を低下させる許りでなく、径の異なる２つの
素線で編組されているので、挿入部の外面に凹凸
が生じてしまい、体腔内挿入時の作業性を悪化さ
せ、また患者に苦痛を与える等の問題も発生して
いた。 In this way, as the thickness of the mesh tube increases, the outer diameter of the flexible tube inevitably increases, which reduces the ease of insertion as an endoscope, so it is necessary to braid two wires with different diameters. As a result, irregularities occur on the outer surface of the insertion portion, which worsens workability during insertion into a body cavity and causes pain to the patient.
従つて、本考案の目的は、上述したような従来
の問題点を解消し、可撓管の外径を増加すること
なく、更に外面に凹凸を生じさせることもなく、
外皮との密着性の良い合成繊維の強度を維持し、
金属素線と混紡で編組した網管を用いた内視鏡用
可撓管を提供するにある。 Therefore, the purpose of the present invention is to solve the above-mentioned conventional problems, without increasing the outer diameter of the flexible tube, and without creating irregularities on the outer surface.
Maintains the strength of synthetic fibers with good adhesion to the outer skin,
To provide a flexible tube for an endoscope using a mesh tube braided with metal wires and a blend.
［問題点を解決するための手段および作用］
本考案は、上記目的を達成するために、金属素
線との混紡で網管を構成する非金属繊維素線の合
成繊維を、その編組における重なり部分におい
て、金属素線の線径に等しい径にまで圧縮変形し
て、網管の編組された厚みを金属素線の線径の２
倍に止めるようにしたものである。このように網
管を構成することによつて、可撓管の径を増加す
ることなく、網管と外皮との密着性も良く、挿入
性も良好な内視鏡用可撓管を得ることができる。[Means and effects for solving the problem] In order to achieve the above-mentioned object, the present invention provides synthetic fibers of non-metallic fiber strands that are blended with metal strands to form a net tube, and the overlapping portions of the braided fibers are , the braided thickness of the net pipe is reduced to 2 times the wire diameter of the metal wire by compressing and deforming it to a diameter equal to the wire diameter of the metal wire.
It was designed to be doubled. By configuring the mesh tube in this way, it is possible to obtain a flexible tube for an endoscope that has good adhesion between the mesh tube and the outer skin and has good insertability without increasing the diameter of the flexible tube. .
［実施例］
以下、本考案を図示の実施例に基づいて説明す
る。[Example] Hereinafter, the present invention will be explained based on the illustrated example.
第５図は、本考案の内視鏡用可撓管が組込まれ
た内視鏡全体の構成を示す概要図であつて、この
内視鏡１は操作部本体２と体腔内挿入部３とから
なり、体腔内挿入部３は操作部本体２側から順に
可撓管４、弯曲管５、先端構成部６と連設されて
構成されている。 FIG. 5 is a schematic diagram showing the overall structure of an endoscope into which the flexible tube for an endoscope of the present invention is incorporated. The body cavity insertion section 3 is configured to be connected to a flexible tube 4, a curved tube 5, and a distal end component 6 in this order from the operation section main body 2 side.
第４図は、本考案の適用せられた網管を有する
内視鏡用可撓管の構成を示す要部拡大断面図であ
る。この可撓管４は弾性帯状板をスパイラル状に
巻いた螺旋管７と、金属素線１１（第３図参照）
と非金属繊維素線である合成繊維１２との混紡か
らなるフラツトな繊維束１０で編成されていて、
上記螺旋管７を被覆する網管８と、この網管８の
外側全周に亘り被着された熱可塑性エラストマか
らなる外皮９とで構成されている。上記網管８
は、第３図に示すように、複数本並列に配置した
金属細線１１と同じく複数本並列に配置した合成
繊維１２とをフラツトに並べて一単位束１０とし
て編み上げて形成されている。 FIG. 4 is an enlarged sectional view of a main part showing the structure of a flexible tube for an endoscope having a mesh tube to which the present invention is applied. This flexible tube 4 includes a spiral tube 7 made of an elastic band-shaped plate wound in a spiral shape, and a metal wire 11 (see Fig. 3).
It is knitted with a flat fiber bundle 10 made of a blend of synthetic fiber 12 which is a non-metallic fiber strand,
It is composed of a mesh pipe 8 that covers the spiral pipe 7, and an outer skin 9 made of thermoplastic elastomer that is adhered to the entire outer circumference of the mesh pipe 8. Above mesh pipe 8
As shown in FIG. 3, a plurality of thin metal wires 11 arranged in parallel and a plurality of synthetic fibers 12 arranged in parallel are arranged flat and knitted into a unit bundle 10.
第１，２図は本考案の一実施例を示したもので
あつて、本実施例においては、上記網管８を構成
する金属細線１１および合成繊維１２からなる単
位束１０の編み上げ重なり部分に、上下から圧力
を加えて第１図に示す如く、太径d2の合成繊維１
２を細径の金属細線１１の線径d1になる迄圧縮変
形させる。即ち、合成繊維１２が金属細線１１に
食い込むと共に、第２図に示す如く、合成繊維１
２同士が互いに圧縮変形し密着する。すると、第
１，２図に示すように網管８の編組の厚味は、
2d1となり従来のように合成繊維１２を圧縮変形
させない場合は2d2となつていたのに対し、２（d2
−d1）だけ薄くなり、太径の合成繊維１２を用い
ているにも拘らず、網管８の厚味は2d1で何等増
加せず、また、径の異なる２つの素線を用いてい
るのに外観面は凹凸の少ない平滑なものとなる。
従つて、可撓管４の径も太くなることなく、外面
に凹凸を生ずるようなこともない。また外皮９と
の接着力は、合成繊維１２の接着面はそのままと
なつているので、従来の通り強力で不変である。
更に、合成繊維１２は単に圧縮変形させただけで
あるから強度的にも何等低下することはない。 FIGS. 1 and 2 show an embodiment of the present invention. In this embodiment, the knitted overlapping portion of the unit bundle 10 consisting of the thin metal wire 11 and the synthetic fiber 12 constituting the mesh pipe 8 is By applying pressure from above and below, as shown in Fig. 1, synthetic fiber 1 with a large diameter d 2 is
2 is compressed and deformed until the wire diameter d 1 of the thin metal wire 11 is reached. That is, as the synthetic fiber 12 bites into the thin metal wire 11, as shown in FIG.
The two pieces compress and deform each other and come into close contact with each other. Then, as shown in Figs. 1 and 2, the thickness of the braid of the mesh pipe 8 is
2d 1 , and when the synthetic fiber 12 is not compressively deformed as in the past, it becomes 2d 2 , but 2(d 2
Although the synthetic fiber 12 is made thinner by -d 1 ) and has a larger diameter, the thickness of the mesh tube 8 does not increase at all by 2d 1 , and two wires with different diameters are used. However, the external surface is smooth with few irregularities.
Therefore, the diameter of the flexible tube 4 does not become large, and no irregularities are formed on the outer surface. Furthermore, since the adhesive surface of the synthetic fiber 12 remains unchanged, the adhesive force with the outer skin 9 remains strong and unchanged as before.
Furthermore, since the synthetic fibers 12 are simply compressed and deformed, there is no decrease in strength.
なお、本実施例においては、金属細線１１が５
本と合成繊維が３本とで一単位束としたが、これ
に限るものでなくd2＞d1のものであれば本数につ
いては関係なく同様に作用し、同様な効果が得ら
れるものである。 In addition, in this embodiment, the metal thin wire 11 is 5
A book and three synthetic fibers were made into one unit bundle, but the bundle is not limited to this, and as long as d 2 > d 1 , the same effect can be obtained regardless of the number of fibers, and the same effect can be obtained. be.
［考案の効果］
以上説明したように本考案によれば、外皮との
密着性の良い太径の合成繊維と金属細線とを混紡
にして編組した網管の厚味を、金属線のみによる
厚味の場合と同じで強度的にも劣らないように構
成したので、可撓管の外径も増加することなく、
外周面もより平滑で、体腔内への挿入性も良好で
患者に苦痛を与えることもない、従来の欠点を見
事に解消した内視鏡可撓管を提供することができ
る。[Effects of the invention] As explained above, according to the invention, the thickness of a braided mesh pipe made of a blend of large-diameter synthetic fibers that have good adhesion to the outer skin and fine metal wires can be improved by reducing the thickness of a braided pipe made of only metal wires. As in the case of , the structure is designed so that the strength is not inferior, so the outer diameter of the flexible tube does not increase.
It is possible to provide a flexible endoscope tube that has a smoother outer circumferential surface, can be easily inserted into a body cavity, and does not cause pain to the patient, and has successfully solved the conventional drawbacks.
第１，２図は、本考案の一実施例を示す内視鏡
用可撓管における網管の要部拡大断面図、第３図
は、上記第１，２図の内視鏡用可撓管における網
管の金属線と合成繊維による編組状態を示す部分
要部斜視図、第４図は、本案の適用された網管を
有する内視鏡用可撓管の部分拡大断面図、第５図
は、本考案の内視鏡用可撓管の組み込まれた内視
鏡全体を示す斜視図、第６図は、従来の内視鏡用
可撓管における網管の要部拡大断面図である。
１……内視鏡、４……可撓管、７……螺旋管、
８……網管、９……外皮、１１……金属細線（金
属素線）、１２……合成繊維（非金属繊維素線）、
d1……金属素線の線径、d2……非金属繊維素線の
線径。
1 and 2 are enlarged sectional views of essential parts of a mesh pipe in a flexible tube for an endoscope showing an embodiment of the present invention, and FIG. 3 is a flexible tube for an endoscope shown in FIGS. 1 and 2 above. FIG. 4 is a partially enlarged cross-sectional view of a flexible tube for an endoscope having a mesh tube to which the present invention is applied, and FIG. FIG. 6, which is a perspective view showing the entire endoscope incorporating the flexible tube for an endoscope of the present invention, is an enlarged sectional view of a main part of the mesh tube in the conventional flexible tube for an endoscope. 1 ...Endoscope, 4...Flexible tube, 7...Spiral tube,
8...Mesh pipe, 9...Sheath, 11...Metal thin wire (metal strand), 12...Synthetic fiber (non-metal fiber strand),
d 1 ... Wire diameter of metal wire, d 2 ... Wire diameter of non-metallic fiber wire.
Claims (1)
と、該螺旋管の外周に被覆されていて、金属素線
と同金属素線より太径の非金属繊維素線を混紡に
して編組された網管と、該網管の外周に被覆され
た外皮とで構成された内視鏡用可撓管において、 上記網管を構成する非金属繊維素線が、その編
組における重なり部分において、金属素線の線径
に等しい径にまで圧縮変形されていることを特徴
とする内視鏡用可撓管。[Claims for Utility Model Registration] A spiral tube formed by spirally winding a metal band plate material, and a metal wire and a non-metallic fiber having a larger diameter than the same metal wire, which is coated on the outer periphery of the spiral tube. In a flexible tube for an endoscope, which is composed of a braided mesh pipe made of a blend of strands, and an outer skin covering the outer periphery of the mesh pipe, the non-metallic fiber strands constituting the mesh pipe are A flexible tube for an endoscope, characterized in that the overlapping portion is compressed and deformed to a diameter equal to the wire diameter of the metal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16230787U JPH0519043Y2 (en) | 1987-10-22 | 1987-10-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16230787U JPH0519043Y2 (en) | 1987-10-22 | 1987-10-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0165003U JPH0165003U (en) | 1989-04-26 |
| JPH0519043Y2 true JPH0519043Y2 (en) | 1993-05-20 |
Family
ID=31446010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16230787U Expired - Lifetime JPH0519043Y2 (en) | 1987-10-22 | 1987-10-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0519043Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009261646A (en) * | 2008-04-25 | 2009-11-12 | Hoya Corp | Flexible tube of endoscope |
-
1987
- 1987-10-22 JP JP16230787U patent/JPH0519043Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0165003U (en) | 1989-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0732117A2 (en) | A catheter structure for use in medical treatment | |
| JPH0519043Y2 (en) | ||
| JP3184086B2 (en) | catheter | |
| USRE30593E (en) | Multi-stranded coiled orthodontic arch wire | |
| JP4634635B2 (en) | Telescopic wire and manufacturing method thereof | |
| JPH01104234A (en) | Flexible tube for endoscope | |
| USRE30332E (en) | Multi-stranded coiled orthodontic arch wire | |
| US4086702A (en) | Multi-stranded coiled orthodontic arch wire | |
| JPH01232923A (en) | Flexible tube for endoscope | |
| JP3231588B2 (en) | Reticulated tube for flexible tube of endoscope | |
| JP3231667B2 (en) | Wire loop type treatment instrument for endoscope | |
| JPH0348804B2 (en) | ||
| JPH0783740B2 (en) | Flexible tube for endoscope | |
| JPS6348243Y2 (en) | ||
| JP3231587B2 (en) | Reticulated tube for flexible tube of endoscope | |
| JP3215809B2 (en) | Wire loop type treatment instrument for endoscope | |
| JP2005296224A6 (en) | Interdental brush | |
| JP4338257B2 (en) | Endoscope flexible tube | |
| JP2005296224A (en) | Interdental brush | |
| JP3331128B2 (en) | Reticulated tube for flexible tube of endoscope | |
| JP3505009B2 (en) | Endoscope bending operation device | |
| JPH01185236A (en) | Flexible pipe for endoscope | |
| JP3331131B2 (en) | Reticulated tube for flexible tube of endoscope | |
| JP3331129B2 (en) | Reticulated tube for flexible tube of endoscope | |
| JPH01254138A (en) | Soft part of endoscope |