JPS5846801Y2 - The best way to get started - Google Patents
The best way to get startedInfo
- Publication number
- JPS5846801Y2 JPS5846801Y2 JP1975058151U JP5815175U JPS5846801Y2 JP S5846801 Y2 JPS5846801 Y2 JP S5846801Y2 JP 1975058151 U JP1975058151 U JP 1975058151U JP 5815175 U JP5815175 U JP 5815175U JP S5846801 Y2 JPS5846801 Y2 JP S5846801Y2
- Authority
- JP
- Japan
- Prior art keywords
- joint
- rings
- endoscope
- curved tube
- wire
- 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
Description
【考案の詳細な説明】
この考案は、内視鏡用湾曲管に関するものであり、特に
、複数の節輪を相互に関節軸によって軸止する形態の内
視鏡用湾曲管の改良に関するものである。[Detailed description of the invention] This invention relates to a curved tube for an endoscope, and in particular to an improvement of a curved tube for an endoscope in which a plurality of joint rings are mutually fixed by joint shafts. be.
一般的に、内視鏡用湾曲管は、例えば、実公昭４８３１
６６９号公報に見られるように複数の節輪を相互に軸止
しての節輪群からなり、その頭部側（二前端を固定した
ワイヤの後端部を牽引することに湾曲制御されるもので
ある。In general, curved tubes for endoscopes are, for example,
As seen in Japanese Patent No. 669, it consists of a group of joint rings in which a plurality of joint rings are fixed to each other, and the bending is controlled by pulling the rear end of a wire whose head side (two front ends are fixed). It is something.
すなわち、上記実公昭４８３１６６９号公報に開示され
た内視鏡用湾曲管は、第１図に示すように直径方向に互
いに対向した関節軸装着部２ａ、２ｂを有する大径の外
輪２と、同様の関節軸装着部３ ａ 、３ ｂを有する
小径の内輪３とを、上記関節軸装着部２ａ、２ｂ、３ａ
、３ｂが互に円周方向に９０°ずつずれた位置に来るよ
うにし、かつ互に逆向きに嵌合固定することによって構
成された節輪１を順次関節軸４で軸止し構成されている
。That is, the curved tube for an endoscope disclosed in the above-mentioned Japanese Utility Model Publication No. 4831669 has a large-diameter outer ring 2 having joint shaft mounting portions 2a and 2b facing each other in the diametrical direction, as shown in FIG. A small diameter inner ring 3 having joint shaft mounting parts 3a, 3b is attached to the joint shaft mounting parts 2a, 2b, 3a.
, 3b are positioned at positions offset by 90 degrees from each other in the circumferential direction, and the joint rings 1 are constructed by fitting and fixing them in opposite directions, and are sequentially fixed to the joint shaft 4. There is.
更に、上記内輪３には、プレス成形により関節軸装着部
３ ａ 、３ ｂと９０°ずれた位置部分に四部３Ｃ，
３ｄが形成され、この凹部３ Ｃ，３ｄは、外輪２の内
周面と共にワイヤ挿通孔５を形成している。Furthermore, the inner ring 3 has four parts 3C, 90° shifted from the joint shaft mounting parts 3a and 3b by press molding.
3d, and these recesses 3C, 3d together with the inner peripheral surface of the outer ring 2 form a wire insertion hole 5.
すなわち、ワイヤ挿通孔５には、節輪群の頭部に前端を
固定した２対のワイヤがそれぞれ挿通され、それらワイ
ヤの後端部を交互に牽引操作することにより、上記節輪
群で構成された湾曲管を湾曲制御できるように構成され
ている。That is, two pairs of wires whose front ends are fixed to the heads of the nodal ring groups are respectively inserted into the wire insertion holes 5, and by pulling the rear ends of these wires alternately, the structure of the nodal ring group is made. It is configured to be able to control the bending of the curved pipe.
このように構成された内視鏡用湾曲管は、節輪を構成す
る内輪にプレス成形により凹部を設けるために、その成
形特に変形すること、成形特のパリを除去しなければな
らないこと、更には、ワイヤ挿通孔を円形状にすること
ができない等の難点なり欠点がある。In order to provide a concave portion in the inner ring constituting the joint ring by press molding, the curved tube for an endoscope constructed in this way requires deformation during the molding process, and the need to remove the molding part. However, there are difficulties and drawbacks such as the inability to form the wire insertion hole into a circular shape.
更に、第３図に示すようにワイヤ挿通孔５は、関節軸４
と同一線上となり、ワイヤ挿通孔５に挿通したワイヤ６
は、必然的に関節軸４の端部上を通ることとなり、ワイ
ヤ６の直線性の維持が難しく、蛇行したりあるいは、関
節軸４の近傍に摺接したりして円滑な操作が阻害される
ものである。Furthermore, as shown in FIG.
The wire 6 inserted into the wire insertion hole 5 is on the same line as the
inevitably passes over the end of the joint shaft 4, making it difficult to maintain the straightness of the wire 6, causing it to meander or sliding near the joint shaft 4, impeding smooth operation. It is something.
そこで、この考案は、上述したところに鑑みて、改良さ
れた内視鏡用湾曲管を提供するものであり、以下に、こ
の考案による内視鏡用湾曲管の一実施例を添付図面の第
４図乃至第６図に基づいて詳細に説明する。Therefore, in view of the above, this invention provides an improved curved tube for an endoscope, and an embodiment of the curved tube for an endoscope according to this invention will be described below with reference to the accompanying drawings. This will be explained in detail based on FIGS. 4 to 6.
第４図は、内視鏡用湾曲管の一部断面図面であり、符号
１１，１２．１３・・・・・・は、それぞれ節輪を示し
、これら節輪１１，１２．１３・・・・・・には、それ
ぞれ一方の端部に直径方向に対向する位置に設けた突出
部に軸孔１１ ａ、１１ ｂ、１２ａ、１２ｂ、１３ａ
、１３ｂ・・・・・−１そして、それぞれの他方の端部
には、上記軸孔１１ａ、１１ｂ 、１２ ａ 、１２
ｂ 、１３ ａ 、１３ ｂ ・・−・−・ノ対向方向
と９０゜ずらせた直径方向に対向する位置に設けた突出
部に軸孔１１Ｃ，１１ｄ 、１２Ｃ，１２Ｃ，１３Ｃ，
１３ｄ・・・・・・が設けられている。FIG. 4 is a partial cross-sectional view of a curved tube for an endoscope, and numerals 11, 12, 13, . . . indicate node rings, and these nodes 11, 12, 13, . ... have shaft holes 11a, 11b, 12a, 12b, 13a in protrusions provided at diametrically opposed positions on one end of each
, 13b...-1 and the shaft holes 11a, 11b, 12a, 12 at the other end of each
The shaft holes 11C, 11d, 12C, 12C, 13C,
13d... is provided.
符号Ｓ、、Ｓ２．Ｓ３・・・・・・は、前記節輪１１゜
１２．１３・・・・・・の相互間例えば節輪１１の軸孔
１１ Ｃと節輪１２の軸孔１２ａとを軸止するための関
節軸であり、これら関節軸Ｓ１．Ｓ２．Ｓ３・・・・・
・の軸止部には、節輪相互間を傾動自在に軸止するため
の段差が設けられている。Symbols S, , S2. S3... is for locking the joint rings 11, 12, 13, etc., for example, the shaft hole 11C of the joint ring 11 and the shaft hole 12a of the joint ring 12. These joint axes S1. S2. S3...
・The shaft stop part is provided with a step for tilting the shaft between the joint rings.
また節輪１１，１２．１３・・・・・・の内側に突出す
る関節軸Ｓ１．Ｓ２．Ｓ３・・・・・・の突出部には、
ワイヤ挿通孔ｔ１．ｔ２．ｔ３・・・・・・がそれぞれ
突設され、それら挿通孔ｔ１．ｔ２．ｔ３・・・・・・
には、第６図に示すように牽引ワイヤＷ１．Ｗ２．Ｗ３
．Ｗ４（Ｗ４は省略）が挿通されている。In addition, the joint shafts S1. S2. In the protruding part of S3...
Wire insertion hole t1. t2. t3... are provided in a protruding manner, and the insertion holes t1. t2. t3...
As shown in FIG. 6, the traction wire W1. W2. W3
．． W4 (W4 is omitted) is inserted.
これら、牽引ワイヤＷ１゜Ｗ２．Ｗ３．Ｗ４は、それぞ
れその前端が上記節輪１１゜１２．１３・・・・・・に
よって構成される節輪群の頭部側に固定され、その後端
部は、手許側にて交互に牽引できるように設けられてい
る。These traction wires W1°W2. W3. W4 has its front end fixed to the head side of the node ring group constituted by the node wheels 11, 12, 13, etc., and its rear end so that it can be pulled alternately on the hand side. It is set in.
以上の構成を有する内視鏡用湾曲管は、まず、前記節輪
１１．１２．１３・・・・・・をそれぞれ前記関節軸Ｓ
１゜Ｓ２．Ｓ３・・・・・・で相互に傾動自在に軸止し
、その関節軸Ｓ１．Ｓ２．Ｓ３に設けられた２対の牽引
ワイヤＷ１゜Ｗ２．Ｗ３．Ｗ４を挿通することにより構
成組立られる。In the curved tube for an endoscope having the above configuration, first, the nodal rings 11, 12, 13, etc. are connected to the joint axis S, respectively.
1°S2. S3 . S2. Two pairs of traction wires W1°W2. W3. The structure is assembled by inserting W4.
そして、前端部をそれぞれ固定された上記２対の牽引ワ
イヤＷ１．Ｗ２．Ｗ３．Ｗ４の後端部を交互に牽引操作
することによって、上記節輪群からなる湾曲管は、左右
、上下の４方向に屈曲される。Then, the two pairs of traction wires W1. whose front ends are respectively fixed. W2. W3. By alternately pulling the rear end of W4, the bending tube made up of the node ring group is bent in four directions: left, right, and up and down.
以上説明したように、この考案による内視鏡用湾曲管に
よれば、節輪相互間を軸止する関節軸にワイヤ挿通孔を
設けたので、従来のように節輪自体にワイヤ挿通孔形成
用凹部をプレス成形によって設けたりする必要がなく、
個々の部品の形状が単純で加工性が良いことは勿論のこ
とながら、内径断面積を大きくすることが可能であるこ
と、更に、牽引ワイヤの直線性が保たれ、挿通孔との摺
動抵抗を小さくすることができる等の作用効果を奏する
ものであり、この考案によって奏せられる作用効果は極
めて大きいものである。As explained above, according to the curved tube for an endoscope according to this invention, the wire insertion hole is provided in the joint shaft that pivots between the joint rings. There is no need to create a recess by press molding,
The shapes of the individual parts are simple and workability is good, and the cross-sectional area of the inner diameter can be increased.Furthermore, the straightness of the pulling wire is maintained, and the sliding resistance with the insertion hole is reduced. This invention has an extremely large effect, such as being able to make it smaller.
第１図は、従来の内視鏡用湾曲管の構成を示す一部断面
図、第２図は、そのＸ−Ｘ線断面図、第３図は、第１図
の湾曲管にワイヤを挿通した状態を示す一部断面図、第
４図は、この考案による内視鏡用湾曲管の一実施例を示
す一部断面図、第５図は第４図におけるＡ−Ａ線断面図
、及び第６図はワイヤを挿通した状態を示す一部断面図
である。
１１ 、１２．１３・・・・・・節輪、１１ ａ 、１
１ ｂ 、１１ Ｃ，１１ｄ−・−・軸孔、Ｓｌ、Ｓ２
．Ｓ３・・・・・・関節軸、ｔｌ、ｔ２．ｔ３・・・・
・・ワイヤ挿通孔、Ｗｌ、Ｗ２．Ｗ３．Ｗ４・・・・・
・ワイヤ挿通孔。Fig. 1 is a partial cross-sectional view showing the configuration of a conventional curved tube for an endoscope, Fig. 2 is a cross-sectional view taken along the line X-X, and Fig. 3 shows a wire inserted into the curved tube shown in Fig. 1. 4 is a partial sectional view showing an embodiment of the curved tube for an endoscope according to this invention; FIG. 5 is a sectional view taken along line A-A in FIG. 4; FIG. 6 is a partially sectional view showing a state in which a wire is inserted. 11, 12.13...nodal ring, 11 a, 1
1b, 11C, 11d--Shaft hole, Sl, S2
．． S3...Joint axis, tl, t2. t3...
...Wire insertion hole, Wl, W2. W3. W4...
・Wire insertion hole.
Claims (1)
部に上記軸孔の対向方向と９０°ずらせた直径方向に対
向する軸孔を有する多数の節輪を互いに９０°ずらせて
関節軸によって相互に軸止して節輪群を構成すると共に
、この節輪群の頭部側にそれぞれ前端を固定した２対の
ワイヤの後端部を交互に牽引することにより、前記節輪
群を４方向に傾動して屈曲するようにした内視鏡用湾曲
管において、前記関節軸に上記ワイヤの挿通孔を設けた
ことを特徴とする内視鏡。A large number of joint rings each having a diametrically opposing shaft hole at one end and a diametrically opposing shaft hole at the other end that is offset by 90° from the opposing direction of the shaft hole are arranged 90° apart from each other. The nodal rings are mutually fixed by joint shafts to form a nodal ring group, and the rear ends of two pairs of wires each having a front end fixed to the head side of this nodal ring group are pulled alternately. 1. A curved tube for an endoscope which is bent by tilting the group in four directions, characterized in that the joint axis is provided with an insertion hole for the wire.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1975058151U JPS5846801Y2 (en) | 1975-04-28 | 1975-04-28 | The best way to get started |
| US05/678,736 US4108211A (en) | 1975-04-28 | 1976-04-21 | Articulated, four-way bendable tube structure |
| DE2618732A DE2618732C3 (en) | 1975-04-28 | 1976-04-28 | Articulated, hollow construction with ring elements and pull wires for a fiber optic endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1975058151U JPS5846801Y2 (en) | 1975-04-28 | 1975-04-28 | The best way to get started |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS51137888U JPS51137888U (en) | 1976-11-06 |
| JPS5846801Y2 true JPS5846801Y2 (en) | 1983-10-25 |
Family
ID=28215185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1975058151U Expired JPS5846801Y2 (en) | 1975-04-28 | 1975-04-28 | The best way to get started |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5846801Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6641528B2 (en) | 2000-09-08 | 2003-11-04 | Fuji Photo Optical Co., Ltd. | Bending part of endoscope |
| US8562518B2 (en) | 2009-09-17 | 2013-10-22 | Olympus Corporation | Flexible endoscope part |
| US9172227B2 (en) | 2010-08-23 | 2015-10-27 | Olympus Corporation | Wire guide member |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5689233A (en) * | 1979-12-24 | 1981-07-20 | Olympus Optical Co | Endoscope |
| JPS6330405Y2 (en) * | 1981-03-30 | 1988-08-15 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49108881A (en) * | 1973-02-17 | 1974-10-16 |
-
1975
- 1975-04-28 JP JP1975058151U patent/JPS5846801Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49108881A (en) * | 1973-02-17 | 1974-10-16 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6641528B2 (en) | 2000-09-08 | 2003-11-04 | Fuji Photo Optical Co., Ltd. | Bending part of endoscope |
| DE10143966B4 (en) * | 2000-09-08 | 2007-01-25 | Fujinon Corp. | Bending part of an endoscope |
| US8562518B2 (en) | 2009-09-17 | 2013-10-22 | Olympus Corporation | Flexible endoscope part |
| US9172227B2 (en) | 2010-08-23 | 2015-10-27 | Olympus Corporation | Wire guide member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS51137888U (en) | 1976-11-06 |
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