JPS6142577B2 - - Google Patents
Info
- Publication number
- JPS6142577B2 JPS6142577B2 JP55018706A JP1870680A JPS6142577B2 JP S6142577 B2 JPS6142577 B2 JP S6142577B2 JP 55018706 A JP55018706 A JP 55018706A JP 1870680 A JP1870680 A JP 1870680A JP S6142577 B2 JPS6142577 B2 JP S6142577B2
- Authority
- JP
- Japan
- Prior art keywords
- guide tube
- tip
- endoscope
- rigid
- hole
- 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
- 239000003566 sealing material Substances 0.000 claims description 11
- 230000037431 insertion Effects 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000005219 brazing Methods 0.000 description 5
- 210000004051 gastric juice Anatomy 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000001574 biopsy Methods 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 210000003097 mucus Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Endoscopes (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Description
【発明の詳細な説明】
この発明は挿入部先端の構造を改良した内視鏡
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope with an improved structure at the distal end of the insertion section.
内視鏡にはライトガイド等の観察光学系部材の
他に、生検鉗子を挿通したり送吸気をなすための
チヤネルが内蔵されており、このチヤネルは内視
鏡の挿入部内を通つて挿入部の先端に導かれてい
る。しかして従来はたとえば第１図に示されるよ
うに、チヤネルａは誘導管ｂを介して先端硬性部
ｃに形成した吸引鉗子孔ｄに連通されており、上
記誘導管ｂは先端硬性部ｃの後面側にてろう付け
ｅにより固定されている。また、ろう付けｅの代
わりにこの部位を単に接着剤で固定しても、接着
部分が先端硬性部と誘導管との隅部であるため
に、先端硬性部と誘導管が共に金属で形成されて
いると接着強度が弱い。接着強度が弱いと誘導管
が先端硬性部から外れ、内視鏡内に体液等が浸入
したりすると、内視鏡に内蔵されている各種部品
が損われる恐れがある。 In addition to observation optical system components such as a light guide, the endoscope has a built-in channel for inserting biopsy forceps and supplying and inhaling air.This channel is inserted through the insertion section of the endoscope. It is guided by the tip of the section. Conventionally, for example, as shown in FIG. 1, the channel a is communicated with the suction forceps hole d formed in the rigid tip part c via the guide tube b, and the guide tube b is connected to the suction forceps hole d formed in the rigid tip part c. It is fixed by brazing e on the rear side. Furthermore, even if this part is simply fixed with adhesive instead of brazing, the adhesive part is the corner of the rigid tip part and the guide tube, so both the rigid tip part and the guide tube are made of metal. If it is, the adhesive strength will be weak. If the adhesive strength is weak, the guide tube may come off from the rigid tip, and if bodily fluids or the like enter the endoscope, there is a risk that various parts built into the endoscope may be damaged.
この発明は上記事情にもとづきなされたもので
その目的とするところは、誘導管のろう付け部分
の腐食が防止され、高い接合強度を維持できる内
視鏡を提供することにある。 The present invention was made based on the above-mentioned circumstances, and an object thereof is to provide an endoscope in which corrosion of the brazed portion of the guide tube is prevented and high joint strength can be maintained.
以下この発明の一実施例を第２図および第３図
にもとづき説明する。図中１は内視鏡を示し、２
はこの内視鏡１の挿入部、３は操作部である。４
は上記挿入部２の先端に取着された先端硬性部で
あり、この先端硬性部４にはレンズ等の観察光学
系部材を取付けるための装着孔５が形成されてい
る。また上記先端硬性部４には貫通孔６が形成さ
れ、この貫通孔６に誘導管７が挿通されている。
この誘導管７は先端硬性部４の後面側にて半田等
のろう付けによつて固定され、その後端にパイプ
状のチヤネル８が接続されている。このチヤネル
８は前記挿入部２内を挿通して、図示しない鉗子
口と吸引機構に連通されている。 An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. In the figure, 1 indicates an endoscope, and 2
3 is an insertion section of this endoscope 1, and 3 is an operation section. 4
is a rigid tip portion attached to the tip of the insertion portion 2, and the rigid tip portion 4 is formed with a mounting hole 5 for attaching an observation optical system member such as a lens. Further, a through hole 6 is formed in the rigid tip portion 4, and a guide tube 7 is inserted through the through hole 6.
The guide tube 7 is fixed to the rear side of the rigid tip portion 4 by soldering or the like, and a pipe-shaped channel 8 is connected to the rear end thereof. This channel 8 is inserted through the insertion section 2 and communicated with a forceps port and a suction mechanism (not shown).
一方、誘導管７の先端は先端硬性部４の前端面
からやや突出しており、誘導管７の先端外周と先
端硬性部４の前端面との間に、全周に亘つてシー
ル材１０が充填されている。更に詳しくは、この
実施例の場合、貫通孔６の先端部をテーパ状に拡
径させてこの拡径部をシール材充填部１１とし、
このシール材充填部１１にシール材１０を充填し
てある。上記シール材１０としては、たとえばエ
ポキシ樹脂系接着剤のように耐水性および耐酸性
を有し、塗布後に硬化して防水性を発揮するもの
が好ましい。 On the other hand, the tip of the guide tube 7 slightly protrudes from the front end surface of the rigid tip section 4, and a sealing material 10 is filled between the outer circumference of the tip of the guide tube 7 and the front end surface of the rigid tip section 4 over the entire circumference. has been done. More specifically, in this embodiment, the diameter of the tip of the through hole 6 is expanded into a tapered shape, and this expanded diameter portion is used as the sealing material filling portion 11;
This sealing material filling portion 11 is filled with a sealing material 10. The sealing material 10 is preferably one that has water resistance and acid resistance, such as an epoxy resin adhesive, and exhibits waterproof properties by curing after application.
このように上記実施例によれば、シール材１０
によつて誘導管７の外面と貫通孔６の内面との間
の隙間が塞がれて水密に保たれるため、先端硬性
部４が胃液等に浸漬されても胃液等がろう付け箇
所７ａに浸透することなく、ろう付け箇所７ａの
腐食を防止できる。なおシール材１０が充分な接
着強度を有している場合には、シール材充填部１
１を形成することなく、単に誘導管７の先端外周
と先端硬性部４との間にシール材１０を充填する
ようにしてもよい。 As described above, according to the above embodiment, the sealing material 10
Since the gap between the outer surface of the guide tube 7 and the inner surface of the through hole 6 is closed and watertight is maintained, even if the rigid tip portion 4 is immersed in gastric juice or the like, the gastric juice or the like will not be absorbed into the brazed area 7a. Corrosion of the brazed portion 7a can be prevented without penetrating into the brazing area 7a. Note that if the sealant 10 has sufficient adhesive strength, the sealant filling portion 1
1, the sealing material 10 may simply be filled between the outer periphery of the distal end of the guide tube 7 and the rigid distal end portion 4.
なお、第４図はこの発明の第２実施例を示すも
のであつて、この場合、誘導管７の先端を先端硬
性部４の端面に突出せずにシール材１０を充填し
てある。すなわちこの実施例によれば、誘導管７
の先端が突出しないため誘導管７によつて体腔内
が傷付けられるおそれがなくなる。 FIG. 4 shows a second embodiment of the present invention, in which the tip of the guide tube 7 is filled with a sealing material 10 without protruding from the end surface of the rigid tip portion 4. As shown in FIG. That is, according to this embodiment, the guide tube 7
Since the tip of the guide tube 7 does not protrude, there is no risk that the inside of the body cavity will be injured by the guide tube 7.
なお本願におけるチヤネルは、送気あるいは送
水を行なうために用いられるものであつてもよ
い。 Note that the channel in the present application may be used for supplying air or water.
この発明は以上説明したように金属性の誘導管
を、同じく金属製の先端硬性部の後面側で互いに
ろう付けにより固定するため、先端硬性部に誘導
管を高い信頼性で強固に固定できるとともに、誘
導管の先端外周と先端硬性部の前端面との間に全
周に亘つて耐酸性のシール材を充填し液密にした
から、誘導管の外面と貫通孔の内面との間の隙間
を伝つて胃液その他の粘液や薬液、洗浄水等が浸
入することが防止できる。よつて誘導管のろう付
け箇所がこれらの液、特に酸度の高い胃液等によ
つて腐食されることが防止され、高い接合強度を
維持でき、耐久性の高い内視鏡を提供できる。 As explained above, in this invention, the metallic guide tubes are fixed to each other by brazing on the rear side of the rigid tip part, which is also made of metal, so that the guide tube can be firmly fixed to the rigid tip part with high reliability. , Since acid-resistant sealing material is filled all around the circumference between the outer circumference of the tip of the guide tube and the front end surface of the rigid tip, the gap between the outer surface of the guide tube and the inner surface of the through hole is reduced. This can prevent gastric juices, other mucus, medicines, washing water, etc. from entering through the skin. Therefore, the brazed portion of the guide tube is prevented from being corroded by these fluids, particularly gastric fluid with high acidity, and high joint strength can be maintained, making it possible to provide a highly durable endoscope.
第１図は従来の内視鏡先端部の縦断側面図、第
２図および第３図はこの発明の第１実施例を示
し、第２図は内視鏡の全体図、第３図は先端部の
縦断側面図、第４図はこの発明の第２実施例を示
す先端部の縦断側面図である。
１…内視鏡、２…挿入部、４…先端硬性部、６
…貫通孔、７…誘導管、７ａ…ろう付け箇所、８
…チヤネル、１０…シール材。
FIG. 1 is a longitudinal sectional side view of the tip of a conventional endoscope, FIGS. 2 and 3 show a first embodiment of the present invention, FIG. 2 is an overall view of the endoscope, and FIG. 3 is a side view of the tip of a conventional endoscope. FIG. 4 is a vertical side view of the distal end portion showing a second embodiment of the present invention. 1... Endoscope, 2... Insertion section, 4... Rigid tip section, 6
...Through hole, 7...Guiding tube, 7a...Brazing point, 8
...Channel, 10...Sealing material.
Claims (1)
端硬性部に貫通孔を形成し、この貫通孔に金属で
形成された誘導管を挿通するとともにこの誘導管
を上記先端硬性部の後面側にてろう付けにより固
定し、誘導管の後端にチヤネルを接続したものに
おいて、上記誘導管の先端外周と上記先端硬性部
の前端面との間に全周に亘つて耐酸性のシール材
を充填したことを特徴とする内視鏡。1. A through hole is formed in the rigid distal end portion made of metal located at the distal end of the insertion portion, and a guide tube made of metal is inserted into this through hole, and this guide tube is inserted to the rear side of the rigid distal portion. A channel is connected to the rear end of the guide tube, and an acid-resistant sealing material is filled between the outer circumference of the tip of the guide tube and the front end surface of the rigid tip part. An endoscope that is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1870680A JPS56116440A (en) | 1980-02-18 | 1980-02-18 | Endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1870680A JPS56116440A (en) | 1980-02-18 | 1980-02-18 | Endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56116440A JPS56116440A (en) | 1981-09-12 |
| JPS6142577B2 true JPS6142577B2 (en) | 1986-09-22 |
Family
ID=11979083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1870680A Granted JPS56116440A (en) | 1980-02-18 | 1980-02-18 | Endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56116440A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63185122U (en) * | 1987-05-21 | 1988-11-29 | ||
| JPS6417524U (en) * | 1987-07-21 | 1989-01-27 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0423220Y2 (en) * | 1985-01-10 | 1992-05-29 | ||
| JPH0641528Y2 (en) * | 1988-12-27 | 1994-11-02 | オリンパス光学工業株式会社 | Endoscope |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5444473U (en) * | 1978-08-09 | 1979-03-27 | ||
| JPS5416286B2 (en) * | 1973-11-12 | 1979-06-21 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5623153Y2 (en) * | 1977-07-04 | 1981-05-30 | ||
| JPS5646722Y2 (en) * | 1977-10-13 | 1981-11-02 | ||
| JPS5463482U (en) * | 1977-10-13 | 1979-05-04 |
-
1980
- 1980-02-18 JP JP1870680A patent/JPS56116440A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5416286B2 (en) * | 1973-11-12 | 1979-06-21 | ||
| JPS5444473U (en) * | 1978-08-09 | 1979-03-27 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63185122U (en) * | 1987-05-21 | 1988-11-29 | ||
| JPS6417524U (en) * | 1987-07-21 | 1989-01-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56116440A (en) | 1981-09-12 |
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