JPS5931210Y2 - endoscope tip - Google Patents
endoscope tipInfo
- Publication number
- JPS5931210Y2 JPS5931210Y2 JP5653580U JP5653580U JPS5931210Y2 JP S5931210 Y2 JPS5931210 Y2 JP S5931210Y2 JP 5653580 U JP5653580 U JP 5653580U JP 5653580 U JP5653580 U JP 5653580U JP S5931210 Y2 JPS5931210 Y2 JP S5931210Y2
- Authority
- JP
- Japan
- Prior art keywords
- adapter
- tip
- connecting ring
- large diameter
- key
- 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
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Telescopes (AREA)
Description
【考案の詳細な説明】
この考案はフード等の環状アダプタの取付構造を改良し
た内視鏡先端部に関する。[Detailed Description of the Invention] This invention relates to an endoscope distal end portion having an improved mounting structure for an annular adapter such as a hood.
内視鏡の先端部には、必要に応じてフードや光学アダプ
タその他の環状アダプタが取着されるが、従来は単にア
ダプタを先端構成部本体に圧入嵌合させて固定したり、
先端構成部本体に設けたねじ部にアダプタを螺合させて
固定するだけの構造であるため、使用中にアダプタに外
力が作用したりするとアダプタの取付けが弛んでアダプ
タが体腔内に脱落するおそれがあった。A hood, optical adapter, or other annular adapter is attached to the distal end of an endoscope as necessary, but conventionally, the adapter was simply press-fitted into the distal end component body and fixed.
Since the adapter is simply fixed by screwing it into the threaded part provided on the tip component body, if an external force is applied to the adapter during use, the attachment of the adapter may loosen and the adapter may fall out into the body cavity. was there.
また、近時、アダプタの形状・機能等が多様化すること
により、先端構成部本体に対するアダプタの周方向の位
置を正しく規制する必要性が増大し、かかる位置規制を
確実に行なえる構造の開発が望まれていた。In addition, as the shapes and functions of adapters have diversified in recent years, there has been an increasing need to correctly regulate the circumferential position of the adapter relative to the tip component body, and the development of a structure that can reliably regulate the position. was desired.
この考案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、アダプタを先端構成部本体に確実にか
つ強固に固定し得るとともに、先端構成部本体に対する
アダプタの周方向の位置規制を正確になすことのできる
内視鏡先端部を提供することにある。This invention was developed based on the above circumstances, and its purpose is to securely and firmly fix the adapter to the tip component body, and to accurately control the circumferential position of the adapter relative to the tip component body. The object of the present invention is to provide an endoscope tip part that can be used as an endoscope.
以下この考案の第１実施例を第１図ないし第４図を参照
して説明する。A first embodiment of this invention will be described below with reference to FIGS. 1 to 4.
図中１は直視形内視鏡の先端部を示すものであって、２
は上記先端部１０ベースをなす先端構成部本体である。In the figure, 1 indicates the tip of the direct-viewing endoscope, and 2
is the tip constituent body which forms the base of the tip portion 10.
この先端構成部本体２内には、対物レンズ群およびイメ
ージガイドなどからなる観察光学系３が挿通されている
とともに、この観察光学系３と並行して照明光学系４が
挿通されている。An observation optical system 3 consisting of an objective lens group, an image guide, etc. is inserted into the tip structure main body 2, and an illumination optical system 4 is inserted in parallel with the observation optical system 3.
先端構成部本体２は、その一部としての大径部２ａと、
この大径部２ａよりも先端側に位置する先端部分２ｃと
、これら大径部２ａと先端部分２ｃとの間に形成された
小径部２ｄとを備えて構成されている。The tip structure main body 2 includes a large diameter portion 2a as a part thereof,
It is configured to include a distal end portion 2c located on the distal side of the large diameter portion 2a, and a small diameter portion 2d formed between the large diameter portion 2a and the distal end portion 2c.
なお本実施例の場合には上記先端部分２ｃの一部に鍔部
２ｂを形成しである。In the case of this embodiment, a flange portion 2b is formed in a part of the tip portion 2c.
そして上記小径部２ｄの外周面に、接続リング６が回転
自在にかつ抜出不能に保持されている。A connecting ring 6 is rotatably and non-removably held on the outer circumferential surface of the small diameter portion 2d.
この接続リング６の外面には手指Ａで回転操作するため
のローレット加工等を施した滑り止め部６ａが形成され
ているとともに、後述するアダプタＩを螺合するねじ部
６ｃが設けられている。On the outer surface of the connecting ring 6, there is formed a non-slip part 6a which is knurled or the like so that it can be rotated with fingers A, and is also provided with a threaded part 6c into which an adapter I, which will be described later, is screwed.
また、第２図に示されるように接続リング６の外径は、
後述するアダプタ７卦よび大径部２ａのいずれの外径よ
りも小さく形成されている。Moreover, as shown in FIG. 2, the outer diameter of the connecting ring 6 is
It is formed smaller than the outer diameter of any of the adapter 7 and the large diameter portion 2a, which will be described later.
そして、先端構成部本体２の先端部分２ｃの外面には環
状をなすアダプタ７、たとえばフードが取着されるよう
になっている。An annular adapter 7, such as a hood, is attached to the outer surface of the tip portion 2c of the tip component main body 2.
このフードは、体腔粘膜を保護したり被観察部１での距
離を一定に保つためなどに使用されるものであって、樹
脂など滑らかな素材より形成される。This hood is used to protect the body cavity mucous membranes and maintain a constant distance from the observation area 1, and is made of a smooth material such as resin.
そしてこのアダプタ７の内面は、段部８を境として先端
側の小口径部７ａと、後端側の大口径部７ｂとに形成さ
れ、この大口径部１ｂの内面に、上記接続リング６が螺
合するねじ部７ｃを形成しである。The inner surface of this adapter 7 is formed into a small diameter section 7a on the front end side and a large diameter section 7b on the rear end side with the stepped section 8 as a boundary, and the connection ring 6 is attached to the inner surface of the large diameter section 1b. A threaded portion 7c for screwing is formed.
渣た、上記アダプタ７の内面にはキー９が突設されてお
り、一方、先端構成部本体２側には、このキー９が嵌合
するキー溝１０が形成されている。A key 9 is provided protruding from the inner surface of the adapter 7, while a key groove 10 into which the key 9 fits is formed on the tip component body 2 side.
そしてこれらが嵌合することによりアダプタ７０回転止
めがなされるとともに、先端構成部本体２に対するアダ
プタ７の周方向の位置規制がなされるようになっている
。By fitting these together, the adapter 70 is prevented from rotating, and the circumferential position of the adapter 7 relative to the tip component main body 2 is regulated.
以上のように構成された本実施例は、第３図に示される
ように先端構成部本体２の端面側にアダプタ７を対峙さ
せて、キー溝１０にキー９を合致させつつアダプタ７を
先端構成部本体２に押し込む。In this embodiment configured as described above, the adapter 7 is placed opposite to the end surface side of the tip component main body 2, and the adapter 7 is attached to the tip while the key 9 is aligned with the keyway 10. Push it into the component body 2.
そして、ねじ部６ｃ 、７ｃ相互を突き当てて、接続リ
ング６の滑り止め部６ａを手指でねじ込み方向に回転さ
せる。Then, the threaded portions 6c and 7c are brought into contact with each other, and the non-slip portion 6a of the connecting ring 6 is rotated in the screwing direction with fingers.
こうすることによってアダプタ１は、それ自体は回転す
ることなく次第に接続リング６の方向に引き込まれてゆ
き、鍔部２ｂにアダプタ内面の段部８が突き当ったとこ
ろでこれらアダプタＩと接続リング６相互は鍔部２ｂを
挾んで互いに強固に固定される。By doing this, the adapter 1 is gradually drawn in the direction of the connecting ring 6 without rotating itself, and when the stepped part 8 on the inner surface of the adapter hits the collar part 2b, the adapter I and the connecting ring 6 are mutually connected. are firmly fixed to each other by sandwiching the flange portion 2b.
このように本実施例によれば、アダプタγは接続リング
６との間に鍔部２ｂを挾んで先端構成部本体２に固定さ
れるものであり、しかもアダプタ７はキー９によって回
転止めがなされた状態となるから、一旦連結した後はた
とえアダプタ７に回転方向の外力が作用してもアダプタ
７が外れることはなく、きわめて強固な連結状態を維持
できる。According to this embodiment, the adapter γ is fixed to the tip component main body 2 with the flange 2b sandwiched between the adapter γ and the connecting ring 6, and the adapter 7 is prevented from rotating by the key 9. Therefore, once connected, even if an external force in the rotational direction is applied to the adapter 7, the adapter 7 will not come off, and an extremely strong connected state can be maintained.
しかもキー９とキー溝１０相互の嵌合によって、アダプ
タ７０周方向の位置規制を正しくなすことができるから
、先端構成部本体２に対する周方向の位置が定められて
いるタイプの異形アダプタであっても、正しい位置に固
定でき、使用中に位置ずれを生じることも防止できる。In addition, the mutual fitting of the key 9 and the keyway 10 allows the circumferential position of the adapter 70 to be correctly regulated, making it an irregularly shaped adapter whose circumferential position with respect to the tip component body 2 is determined. It can also be fixed in the correct position, and can also be prevented from shifting during use.
したがって、フード以外の環状アダプタとして、たとえ
ば広角レンズ等を備えた光学アダプタや超音波振動子な
どを備えた特殊アダプタに適用した場合に特に効果的で
ある。Therefore, it is particularly effective when applied to an annular adapter other than a hood, such as an optical adapter equipped with a wide-angle lens or a special adapter equipped with an ultrasonic transducer.
しかも接続リング６の外径をアダプタ７および大径部２
ａのいずれの外径よりも小さくしたから、使用中に接続
リング６に触れることを防止でき、接続リング６が不必
要に回転力を受けることを防止できるものである。Moreover, the outer diameter of the connecting ring 6 is connected to the adapter 7 and the large diameter part 2.
Since the outer diameter is smaller than either of the outer diameters of a, it is possible to prevent the connecting ring 6 from being touched during use, and it is possible to prevent the connecting ring 6 from being subjected to unnecessary rotational force.
なお、第５図はこの考案の第２実施例を示すものであり
、この場合、第１実施例に比べて接続リング６の外径を
、アダプタ７の外径よりも更に小さく形成するとともに
、先端構成部本体２の大径部２ａの外径よりも小さく形
成しである。FIG. 5 shows a second embodiment of this invention, in which the outer diameter of the connecting ring 6 is made smaller than the outer diameter of the adapter 7 compared to the first embodiment. It is formed smaller than the outer diameter of the large diameter portion 2a of the tip component main body 2.
したがって内視鏡使用中に接続リング６が手指あるいは
体腔内壁に更に触れにくくなることから、接続リング６
に不所望な回転外力が作用することを更に効果的に防止
でき、接続リング６の弛みの発生をより確実に防止し得
る利点がある。Therefore, since it becomes more difficult for the connecting ring 6 to touch the fingers or the inner wall of the body cavity while using the endoscope, the connecting ring 6
This has the advantage that it is possible to more effectively prevent undesired rotational external force from acting on the connecting ring 6, and to more reliably prevent the connection ring 6 from becoming loose.
なお、キーとキー溝相互の配置関係は逆であってもよく
、アダプタ側にキー溝を設けるようにしてもよいのは勿
論である。Note that the mutual arrangement relationship between the key and the keyway may be reversed, and it goes without saying that the keyway may be provided on the adapter side.
この考案は以上説明したように、キーによって回転止め
のなされたアダプタを、先端構成部本体の外周面に回転
自在にかつ抜出不能に保持された接続リングに螺合させ
て締付固定するようにしたから、アダプタを確実にかつ
強固に固定でき、たとえ使用中にアダプタに回転方向の
外力が作用してもアダプタの弛み、外れを確実に防止で
きる。As explained above, this invention is such that the adapter, which is prevented from rotating by a key, is screwed into the connecting ring which is rotatably and irremovably held on the outer circumferential surface of the tip component body, and is tightened and fixed. Therefore, the adapter can be securely and firmly fixed, and even if an external force in the rotational direction is applied to the adapter during use, the adapter can be reliably prevented from loosening or coming off.
しかもキーの嵌合によって先端構成部本体に対するアダ
プタの周方向の位置規制を正確に澄すことができるから
、種々の形状、機能を有する異形アダプタも所定の位置
に正しくかつ簡単に固定できるとともに、接続リングの
外径をアダプタおよび先端構成部本体のいずれの外径よ
りも小さく形成したから、使用中に接続リングが体腔壁
などに触れることを防止でき、弛みの発生をより確実に
防止できるなど、種々優れた効果を奏する。Moreover, since the circumferential position of the adapter relative to the tip component main body can be precisely regulated by fitting the key, irregularly shaped adapters having various shapes and functions can be correctly and easily fixed in a predetermined position. Since the outer diameter of the connecting ring is smaller than the outer diameter of both the adapter and the tip component body, the connecting ring can be prevented from touching the body cavity wall during use, and loosening can be more reliably prevented. , has various excellent effects.
第１図ないし第４図はこの考案の第１実施例を示し、第
１図は内視鏡先端部の正面図、第２図”は同先端部の縦
断側面図、第３図は斜視図、第４図はアダプタの縦断側
面図、第５図はこの考案の第２実施例を示す内視鏡先端
部の要部の断面図である。
１・・・・・・内視鏡先端部、２・・・・・・先端構成
部本体、６・・・・・・接続リング、
１０・・・・・・キー溝。
１・・・・・・アダプタ、
９・・・・・・キーFigures 1 to 4 show a first embodiment of this invention, with Figure 1 being a front view of the tip of the endoscope, Figure 2'' being a vertical side view of the tip, and Figure 3 being a perspective view. , FIG. 4 is a longitudinal side view of the adapter, and FIG. 5 is a cross-sectional view of the main parts of the endoscope tip section showing a second embodiment of this invention. 1... Endoscope tip section , 2... Tip component body, 6... Connection ring, 10... Keyway. 1... Adapter, 9... Key
Claims (1)
りも先端側に位置して先端構成部本体に設けられた先端
部分と、これら大径部と先端部分との間に形成された小
径部と、この小径部の外周面に回転自在にかつ抜出不能
に保持された接続リングと、上記先端構成部本体の上記
先端部分の外面に嵌合されて上記接続リングに螺合され
る着脱自在な環状アダプタとを備え、このアダプタの内
面もしくは先端構成部本体の外面のいずれか一方にアダ
プタの、回転止めをなすキーを設は他方にこのキーに嵌
合するキー溝を設けるとともに、上記接続リングの外径
は、上記アダプタおよび先端構成部本体の上記大径部の
いずれの外径よりも小さく形成したことを特徴とする内
視鏡先端部。A large diameter portion as a part of the tip component body, a tip portion located on the tip side of the tip component body from the large diameter portion, and a tip portion formed between these large diameter portion and the tip portion. a connecting ring rotatably and non-removably held on the outer peripheral surface of the small diameter portion; and a connecting ring that is fitted onto the outer surface of the tip portion of the tip component main body and is screwed to the connecting ring. A removable annular adapter is provided, and a key is provided on either the inner surface of the adapter or the outer surface of the tip component body to prevent the adapter from rotating, and the other is provided with a key groove that fits into the key. The endoscope distal end is characterized in that the outer diameter of the connecting ring is smaller than the outer diameter of either the adapter or the large diameter portion of the distal end component main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5653580U JPS5931210Y2 (en) | 1980-04-24 | 1980-04-24 | endoscope tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5653580U JPS5931210Y2 (en) | 1980-04-24 | 1980-04-24 | endoscope tip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56158203U JPS56158203U (en) | 1981-11-26 |
| JPS5931210Y2 true JPS5931210Y2 (en) | 1984-09-05 |
Family
ID=29651094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5653580U Expired JPS5931210Y2 (en) | 1980-04-24 | 1980-04-24 | endoscope tip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5931210Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2534866Y2 (en) * | 1989-07-04 | 1997-05-07 | 株式会社町田製作所 | Fixing structure of objective lens in endoscope |
| JP2585912Y2 (en) * | 1993-04-15 | 1998-11-25 | オリンパス光学工業株式会社 | Hood for endoscope |
-
1980
- 1980-04-24 JP JP5653580U patent/JPS5931210Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56158203U (en) | 1981-11-26 |
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