JPH0352485Y2 - - Google Patents
Info
- Publication number
- JPH0352485Y2 JPH0352485Y2 JP1986185858U JP18585886U JPH0352485Y2 JP H0352485 Y2 JPH0352485 Y2 JP H0352485Y2 JP 1986185858 U JP1986185858 U JP 1986185858U JP 18585886 U JP18585886 U JP 18585886U JP H0352485 Y2 JPH0352485 Y2 JP H0352485Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- treatment instrument
- endoscope
- curve
- instrument insertion
- 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
Links
- 238000011282 treatment Methods 0.000 claims description 41
- 238000003780 insertion Methods 0.000 claims description 28
- 230000037431 insertion Effects 0.000 claims description 28
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001574 biopsy Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012277 endoscopic treatment Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
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、生検用鉗子その他の処置具類が挿
通される内視鏡の処置具挿通管に関するものであ
る。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a treatment tool insertion tube of an endoscope through which biopsy forceps and other treatment tools are inserted.
内視鏡を用いて各種の処置を行うために、内視
鏡には処置具類を挿通する処置具挿通管が装備さ
れている。この処置具挿通管は、一般に内視鏡の
操作部に挿入口が形成され、挿入部先端に突出口
が形成されている。
In order to perform various treatments using an endoscope, the endoscope is equipped with a treatment tool insertion tube through which treatment tools are inserted. This treatment instrument insertion tube generally has an insertion port formed in the operation section of the endoscope, and a protrusion port formed at the tip of the insertion section.
第５図は従来の内視鏡の処置具挿通管を示した
ものであり、操作部５１に形成された処置具挿入
口５２に連通して、例えば金属パイプよりなる硬
質管５３が曲線的に曲げて固設され、挿入部先端
の突出口に向かう鉗子チヤンネル５４がその硬質
管５３の端部外周に固着されて接続されていた。 FIG. 5 shows a treatment instrument insertion tube of a conventional endoscope, in which a hard tube 53 made of, for example, a metal pipe is connected in a curved manner to a treatment instrument insertion opening 52 formed in an operating section 51. The forceps channel 54, which was bent and fixed and directed toward the protruding port at the tip of the insertion portion, was fixedly connected to the outer periphery of the end of the hard tube 53.
上述の従来の内視鏡の処置具挿通管は、第５図
に示されるように、曲線的に曲げられた硬質管５
３の端部に鉗子チヤンネル５４を単に接続しただ
けだつたので、カーブの内周側部分に硬質管の端
部のエツジ５３ａが管軸方向に対して直角に張り
出していた。そのため、管内に処置具５５を挿入
又は抜去する際にそのエツジ５３ａが引つかかつ
て大きな抵抗を生じ、操作性を大幅に損なうと共
に、場合によつてはそのエツジ５３ａに処置具の
頭部５５ａが食い込んで、処置具５５を管内から
抜去することができなくなつてしまう事態さえ生
ずる欠点があつた。
As shown in FIG. 5, the conventional treatment instrument insertion tube of the above-mentioned endoscope has a hard tube 5 bent into a curve.
Since the forceps channel 54 was simply connected to the end of the hard tube 3, the edge 53a of the hard tube end protruded at right angles to the tube axis direction on the inner peripheral side of the curve. Therefore, when inserting or withdrawing the treatment instrument 55 into or out of the tube, the edge 53a may get caught or create a large resistance, greatly impairing operability, and in some cases, the head 55a of the treatment instrument may be attached to the edge 53a. There was a drawback that the treatment instrument 55 could become wedged and become unable to be removed from the canal.
この考案は、従来のそのような欠点を解消し、
処置具をスムーズに挿入、抜去することができる
内視鏡の処置具挿通管を提供することを目的とす
る。 This invention eliminates such drawbacks of the conventional method,
It is an object of the present invention to provide a treatment instrument insertion tube for an endoscope that allows a treatment instrument to be smoothly inserted and removed.
上述の問題点を解決するための、本考案による
内視鏡の処置具挿通管は、
処置具挿入口に連通して内視鏡の操作部に設け
られた硬質管を曲線的に曲げて、そのカーブの内
周側の管壁の先端部に、管軸に対して傾斜した切
り口を有する切り欠きを形成して、この硬質管に
対して内視鏡の挿入部先端側から連結される第２
の管の基端部を、硬質管の上記先端部外周に固着
したことを特徴とする。
In order to solve the above-mentioned problems, the treatment instrument insertion tube of the endoscope according to the present invention is made by bending a hard tube connected to the treatment instrument insertion port and provided in the operating section of the endoscope into a curve. A notch is formed at the distal end of the tube wall on the inner circumferential side of the curve, and the notch has an incline inclined with respect to the tube axis. 2
The proximal end of the tube is fixed to the outer periphery of the distal end of the hard tube.
管内に挿通された処置具を進退させる際には、
その処置具は、管軸方向即ち処置具の進退方向に
対して傾斜した切り欠き部分と接触しながら進退
するので、その接触部では小さな抵抗しか発生し
ない。そして、カーブの最も内側の処置具が最も
ひつかかり易い部分は深く切り欠かれているの
で、この部分には処置具がほとんど接触しない。
When moving the treatment instrument inserted into the tube,
Since the treatment instrument advances and retreats while contacting the notch portion that is inclined with respect to the tube axis direction, that is, the direction in which the treatment instrument advances and retreats, only small resistance is generated at the contact portion. Since the innermost part of the curve where the treatment instrument is most likely to be hit is deeply cut out, the treatment instrument hardly comes into contact with this part.
本考案の第１の実施例を第１図ないし第３図に
もとづいて説明する。
A first embodiment of the present invention will be explained based on FIGS. 1 to 3.
第１図は実施例の側面断面図であり、内視鏡の
操作部１に形成された処置具挿入口２に連通し
て、例えばステンレス鋼製又は硬質合成樹脂製の
パイプなどよりなる硬質管３が、曲線的に曲げら
れて、その下端開口３ａを下方の挿入部（図示せ
ず）方向に向けて、操作部１内に固設されてい
る。このように処置具挿入口２付近の処置具挿通
路（硬質管３）を曲げることにより、処置具の挿
入方向を操作部に対して傾斜させ、操作部の長さ
を短くすることができる。上記の挿入口２には公
知の鉗子栓が装着される。硬質管３の下端開口３
ａには、カーブの内周側３ｂの管壁に、略Ｖ字状
の切り欠き４が形成され、その切り口は管軸に対
して傾斜している。第２図はその部分の斜視図、
第３図は正面図であり、切り口に角が生じないよ
うに、Ｖ字状の両口元４ａ及び頂角部４ｂは丸み
をつけて形成されている。 FIG. 1 is a side cross-sectional view of the embodiment, in which a hard tube made of stainless steel or hard synthetic resin, for example, is connected to a treatment instrument insertion port 2 formed in the operating section 1 of the endoscope. 3 is bent in a curved manner and is fixedly installed in the operating section 1 with its lower end opening 3a facing downward toward the insertion section (not shown). By bending the treatment instrument insertion path (rigid tube 3) near the treatment instrument insertion opening 2 in this way, the insertion direction of the treatment instrument can be inclined with respect to the operating section, and the length of the operating section can be shortened. A known forceps plug is attached to the insertion port 2. Lower end opening 3 of hard tube 3
In a, a substantially V-shaped cutout 4 is formed in the tube wall on the inner peripheral side 3b of the curve, and the cutout is inclined with respect to the tube axis. Figure 2 is a perspective view of that part.
FIG. 3 is a front view, and the V-shaped openings 4a and apex corner 4b are rounded so that no corners are formed at the cut end.
５は、例えば四フツ化エチレン樹脂などよりな
り、上記硬質管３と略同一の内径を有して挿入部
先端に至る可撓性の鉗子チヤンネル（第２の管）
であり、この鉗子チヤンネル５の端部に上記硬質
管３の下端部が圧入されて接着固定され、硬質管
３と鉗子チヤンネル５とが接続されている。６
は、その接続部の固定を補強するために締着され
たワイヤである。 Reference numeral 5 denotes a flexible forceps channel (second tube) made of, for example, tetrafluoroethylene resin, having approximately the same inner diameter as the hard tube 3, and extending to the tip of the insertion section.
The lower end of the hard tube 3 is press-fitted into the end of the forceps channel 5 and fixed with adhesive, so that the hard tube 3 and the forceps channel 5 are connected. 6
is a wire tightened to reinforce the fixation of the connection.
このように構成された上記の実施例によれば、
硬質管のカーブの内周側３ｂの管壁の端面に、管
軸に対して傾斜した切り口を有する略Ｖ字状の切
り欠き４が形成されている。したがつて、管内に
挿入された処置具７を抜去する際に、その処置具
７は、管軸方向即ち抜去方向に対して傾斜した切
り欠き４部分と接触しながら抜去されるので、そ
の接触部では小さな抵抗しか発生しない。特に、
カーブの最も内側の処置具が最もひつかかり易い
部分は深く切り欠かれている（頂角部４ｂ）の
で、この部分には処置具がほとんど接触せず、抜
去に際しての抵抗軽減に大きく寄与している。処
置具を挿入する際にももちろん同様の効果が得ら
れる。 According to the above-described embodiment configured in this way,
A substantially V-shaped notch 4 having a cut end inclined with respect to the tube axis is formed in the end surface of the tube wall on the inner peripheral side 3b of the curve of the hard tube. Therefore, when removing the treatment instrument 7 inserted into the tube, the treatment instrument 7 is removed while coming into contact with the notch 4 that is inclined with respect to the tube axis direction, that is, the extraction direction. Only a small resistance is generated in the area. especially,
The innermost part of the curve, where the treatment tool is most likely to get caught, is deeply cut out (apex corner 4b), so the treatment tool hardly comes into contact with this part, which greatly contributes to reducing the resistance when removing it. There is. Of course, the same effect can be obtained when inserting a treatment instrument.
第４図は本考案の第２の実施例を示すもので、
硬質管１３の下端部を、カーブの外周部１３ｅ側
からカーブの内周１３ｂ側へ向かつて直線的に切
り欠き、硬質管の端面１３ｆが斜面に形成されて
いるものである。本考案の処置具挿通管は、この
ように構成しても上述の第１の実施例と同様の効
果が得られるものであり、カーブの内周側の管壁
の端部に形成される切り欠きの切り口を、管軸に
対して傾斜させたものであれば、上述の第１及び
第２の実施例以外の形状であつてもさしつかえな
い。 FIG. 4 shows a second embodiment of the present invention.
The lower end of the hard tube 13 is cut out linearly from the outer circumference 13e side of the curve to the inner circumference 13b side of the curve, and the end surface 13f of the hard tube is formed as a slope. The treatment instrument insertion tube of the present invention can obtain the same effect as the first embodiment described above even with this configuration, and the cut formed at the end of the tube wall on the inner peripheral side of the curve. Any shape other than the first and second embodiments described above may be used as long as the cut end of the notch is inclined with respect to the tube axis.
尚、上述の実施例においては、第２の管として
可撓性の鉗子チヤンネルを例示したが、本考案は
これに限定されるものではなく、第２の管が金属
製などの硬質のパイプであつてもよく、また、本
考案の構造を内視鏡の挿入部の途中又は先端など
に採用したものをも含むものである。 In addition, in the above-mentioned embodiment, a flexible forceps channel was illustrated as the second pipe, but the present invention is not limited to this, and the second pipe may be a hard pipe made of metal or the like. It also includes those in which the structure of the present invention is adopted in the middle or the tip of the insertion section of an endoscope.
本考案の内視鏡の処置具挿通管によれば、処置
具はその進退方向に対して傾斜した切り口を有す
る切り欠き部分と接触しながら進退し、しかも曲
線的に曲げて形成された硬質管のカーブの最も内
側の、処置具が最もひつかかり易い部分は深く切
り欠かれて処置具がほとんど接触しないので、処
置具を挿脱する際の抵抗が著しく減少して操作性
が大幅に向上し、また、処置具が抜去不能となつ
てしまうおそれ等が解消して、安全性も大幅に向
上する等の効果がある。
According to the endoscopic treatment instrument insertion tube of the present invention, the treatment instrument advances and retreats while contacting the cutout portion having the cutout inclined with respect to the direction of advancement and retreat, and the rigid tube is formed by bending in a curve. The innermost part of the curve, where the treatment instrument is most likely to get caught, is deeply cut out so that the treatment instrument hardly makes contact with it, so the resistance when inserting and removing the treatment instrument is significantly reduced, greatly improving operability. Moreover, there is an effect that the fear that the treatment instrument cannot be removed is eliminated, and safety is greatly improved.
第１図は本考案の第１の実施例の側面断面図、
第２図はその切り欠き部の斜視図、第３図は同じ
く切り欠き部の正面図、第４図は本考案の第２の
実施例の側面断面図、第５図は従来の内視鏡の処
置具挿通管の側面断面図である。
３……硬質管、４……切り欠き、５……第２の
管、１３……硬質管。
FIG. 1 is a side sectional view of the first embodiment of the present invention;
Fig. 2 is a perspective view of the notch, Fig. 3 is a front view of the notch, Fig. 4 is a side sectional view of the second embodiment of the present invention, and Fig. 5 is a conventional endoscope. FIG. 3 is a side sectional view of the treatment instrument insertion tube of FIG. 3... Hard tube, 4... Notch, 5... Second tube, 13... Hard tube.
Claims (1)
けられた硬質管を曲線的に曲げて、そのカーブ
の内周側の管壁の先端部に、管軸に対して傾斜
した切り口を有する切り欠きを形成して、この
硬質管に対して内視鏡の挿入部先端側から連結
される第２の管の基端部を、硬質管の上記先端
部外周に固着したことを特徴とする内視鏡の処
置具挿通管。 ２ 上記の切り欠きが、略Ｖ字状に形成されてい
る実用新案登録請求の範囲第１項記載の内視鏡
の処置具挿通管。 ３ 上記の切り欠きが、上記カーブの外周部側か
ら直線的に切り欠かれて、硬質管の基端部が斜
面に形成されている実用新案登録請求の範囲第
１項記載の内視鏡の処置具挿通管。[Scope of Claim for Utility Model Registration] 1. A hard tube connected to the treatment instrument insertion port and provided in the operating section of the endoscope is bent in a curve, and the tip of the tube wall on the inner circumferential side of the curve is A notch is formed with a cutout inclined with respect to the tube axis, and the proximal end of the second tube, which is connected to the hard tube from the distal end side of the insertion section of the endoscope, is connected to the distal end of the hard tube. A treatment instrument insertion tube for an endoscope, characterized in that it is fixed to the outer periphery of the endoscope. 2. The treatment instrument insertion tube for an endoscope according to claim 1, wherein the cutout is formed in a substantially V-shape. 3. The endoscope according to claim 1, wherein the notch is cut out linearly from the outer peripheral side of the curve, and the proximal end of the hard tube is formed into a slope. Treatment instrument insertion tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986185858U JPH0352485Y2 (en) | 1986-12-02 | 1986-12-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986185858U JPH0352485Y2 (en) | 1986-12-02 | 1986-12-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6392603U JPS6392603U (en) | 1988-06-15 |
| JPH0352485Y2 true JPH0352485Y2 (en) | 1991-11-14 |
Family
ID=31134879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986185858U Expired JPH0352485Y2 (en) | 1986-12-02 | 1986-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352485Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5166012B2 (en) * | 2007-12-10 | 2013-03-21 | 富士フイルム株式会社 | Treatment instrument insertion channel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6329112B2 (en) * | 1981-01-07 | 1988-06-10 | Hitachi Ltd |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56106702U (en) * | 1980-01-18 | 1981-08-19 | ||
| JPS56163405U (en) * | 1980-05-09 | 1981-12-04 | ||
| JPH0336324Y2 (en) * | 1986-08-12 | 1991-08-01 |
-
1986
- 1986-12-02 JP JP1986185858U patent/JPH0352485Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6329112B2 (en) * | 1981-01-07 | 1988-06-10 | Hitachi Ltd |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6392603U (en) | 1988-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3426510B2 (en) | High frequency snare for endoscope | |
| JPS60187737U (en) | Indwelling tube guide device | |
| WO2004064893A3 (en) | Catheter design that facilitates positioning at tissue to be diagnosed or treated | |
| JP3321070B2 (en) | Endoscope treatment tool insertion aid and treatment tool used for it | |
| JPH0375707U (en) | ||
| JPH0352485Y2 (en) | ||
| JPH0215112U (en) | ||
| WO2001066177A1 (en) | Diagnosis or therapy puncture needle | |
| JP2008194112A (en) | Medical puncture needle | |
| JPH0111211Y2 (en) | ||
| JP2002301010A (en) | Tip of endoscope with hood | |
| JP3068660B2 (en) | Endoscope gripper | |
| JPH0749921Y2 (en) | Mantle for endoscopy | |
| JPH0426085Y2 (en) | ||
| JP3542172B2 (en) | Endoscope grasping forceps | |
| JPH02149211U (en) | ||
| JPS63174802U (en) | ||
| JP3998785B2 (en) | Endoscopic treatment tool | |
| JPH0251501U (en) | ||
| JP3326233B2 (en) | Endoscope | |
| JPH0336324Y2 (en) | ||
| JP2022157498A (en) | Puncture needle, treatment instrument for endoscope, and guide wire detention system | |
| JP2002209909A (en) | High frequency snare for endoscope | |
| JPH02109601U (en) | ||
| JPH0411011U (en) |