JPH0532822Y2 - - Google Patents
Info
- Publication number
- JPH0532822Y2 JPH0532822Y2 JP1986076379U JP7637986U JPH0532822Y2 JP H0532822 Y2 JPH0532822 Y2 JP H0532822Y2 JP 1986076379 U JP1986076379 U JP 1986076379U JP 7637986 U JP7637986 U JP 7637986U JP H0532822 Y2 JPH0532822 Y2 JP H0532822Y2
- Authority
- JP
- Japan
- Prior art keywords
- cover glass
- eyepiece
- frame
- adhesive
- light guide
- 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
- 239000006059 cover glass Substances 0.000 claims description 61
- 239000000853 adhesive Substances 0.000 claims description 27
- 230000001070 adhesive effect Effects 0.000 claims description 27
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 238000004659 sterilization and disinfection Methods 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000001954 sterilising effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 239000000126 substance Substances 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］
本考案は高温高圧の蒸気滅菌用に気密構造にし
た内視鏡に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an endoscope having an airtight structure for high temperature and high pressure steam sterilization.
［従来の技術］
近年、細長の挿入部を体腔内等に挿入すること
により、体腔内等を観察したり、処置具にて治療
処置したりすることのできる内視鏡が広く用いら
れるようになつた。[Prior Art] In recent years, endoscopes have become widely used, allowing them to observe the inside of a body cavity and perform medical treatment using a treatment instrument by inserting an elongated insertion section into the body cavity. Summer.
これら内視鏡は、体腔内に挿入して使用される
ため、使用に際して滅菌等の消毒処理が施され
る。 Since these endoscopes are used by being inserted into a body cavity, they are subjected to disinfection treatment such as sterilization before use.
従来より、ホルマリンガスやヨード液による消
毒法が一般に採用されている。消毒上最も有効と
される高圧蒸気滅菌法は高温・高圧の水蒸気を用
いるため、内視鏡内部に水分の浸入する可能性が
あつた。 Conventionally, disinfection methods using formalin gas or iodine solution have been generally employed. The high-pressure steam sterilization method, which is considered the most effective method for disinfection, uses high-temperature, high-pressure steam, so there is a possibility that moisture may infiltrate inside the endoscope.
このため、本出願人は特願昭60−166153号にお
いて、内視鏡の気密性を高め、高圧蒸気滅菌法を
可能とするような提案を行つた。 For this reason, the present applicant proposed in Japanese Patent Application No. 166153/1982 to improve the airtightness of the endoscope and to enable high-pressure steam sterilization.
［考案が解決すべき問題点］
しかしながら、上記従来例でも高温・高圧の水
蒸気中にさらされると、接眼カバーガラスとその
支持枠の接着面が剥離して気密性が低下する虞れ
があり、さらに改善が望まれる状況にある。[Problems to be solved by the invention] However, even in the conventional example described above, when exposed to high temperature and high pressure water vapor, there is a risk that the adhesive surface of the eyepiece cover glass and its support frame will peel off and the airtightness will deteriorate. The situation requires further improvement.
本考案は上述した点にかんがみてなされたもの
で、接着強度を高め、気密性を向上できる内視鏡
を提供することを目的とする。 The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide an endoscope that can increase adhesive strength and improve airtightness.
［問題点を解決するための手段及び作用］
本考案では観察光学系の外表面に臨むカバーガ
ラスと、カバーガラス枠との接着固定面の一部に
間隙を設け、接着剤をこの間隙に充填して固定す
ることによつて、高温・高圧の環境でも接着剤が
緩衝剤として機能し、熱膨脹率による差異による
剥離を防止して、接着強度が向上するようにして
いる。[Means and effects for solving the problem] In the present invention, a gap is provided in a part of the adhesive fixing surface between the cover glass facing the outer surface of the observation optical system and the cover glass frame, and the adhesive is filled in this gap. By fixing it in place, the adhesive functions as a buffer even in high-temperature and high-pressure environments, preventing peeling due to differences in thermal expansion coefficients and improving adhesive strength.
［実施例］
以下、図面を参照して本考案を具体的に説明す
る。[Example] The present invention will be specifically described below with reference to the drawings.
第１図及び第２図は本考案の第１実施例に係
り、第１図は第１実施例の主要部を拡大して示
し、第２図は第１実施例の内視鏡を示す。 1 and 2 relate to a first embodiment of the present invention, FIG. 1 shows an enlarged view of the main part of the first embodiment, and FIG. 2 shows an endoscope of the first embodiment.
第２図に示すように第１実施例の内視鏡１は、
硬性で細径の挿入部２と、この挿入部２の後端に
気密を保持するように固着された太幅の把持部３
と、この把持部３の後端に連設された接眼部４と
から構成されている。 As shown in FIG. 2, the endoscope 1 of the first embodiment has the following features:
A rigid, narrow-diameter insertion section 2, and a wide grip section 3 fixed to the rear end of the insertion section 2 in an airtight manner.
and an eyepiece section 4 connected to the rear end of the grip section 3.
前記挿入部２を形成する外管５内には、上部側
に偏心して内管６が挿通されており、さらにこの
内管６内には、前記把持部３内まで延出されたシ
ステムチユーブ７が挿通されている。このシステ
ムチユーブ７内には、先端側より対象物を結像す
る対物レンズ８及び像伝送手段としてのリレーレ
ンズ系９が内装されている。前記対物レンズ８の
システムチユーブ７の内周面に接する外周面は接
着剤によりシステムチユーブ７に接着されてお
り、対物レンズ８とシステムチユーブ７の間の気
密が保持されている。 An inner tube 6 is inserted eccentrically toward the upper side into the outer tube 5 forming the insertion section 2, and a system tube 7 extending into the grip section 3 is further inserted into the inner tube 6. is inserted. Inside the system tube 7, an objective lens 8 for forming an image of an object from the distal end side and a relay lens system 9 as an image transmission means are installed. The outer circumferential surface of the objective lens 8 that is in contact with the inner circumferential surface of the system tube 7 is adhered to the system tube 7 with an adhesive, and airtightness between the objective lens 8 and the system tube 7 is maintained.
また、このシステムチユーブ７の後端側には、
リレーレンズ枠１１が固着され、また、このリレ
ーレンズ枠１１はその後端外周に雄ねじを形成し
て連結管１２に螺着されており、この連結管１２
を介して、リレーレンズ枠１１と、接眼レンズ１
３を収納した接眼レンズ枠１４とが連結されてい
る。この接眼レンズ１３は、接眼レンズ枠１４の
後方から嵌入され、接眼レンズ枠１４内周面に接
する外周面が接着剤により接眼レンズ枠１４に接
着されており、接眼レンズ１３と接眼レンズ枠１
４の間の気密が保持されている。この接眼レンズ
１３は、その後端周縁に当接するレンズ押え１５
によつて抜け止めされている。 Also, on the rear end side of this system tube 7,
A relay lens frame 11 is fixed, and this relay lens frame 11 has a male thread formed on the outer periphery of its rear end and is screwed onto a connecting tube 12.
via the relay lens frame 11 and the eyepiece lens 1.
3 is connected to an eyepiece frame 14 that houses the lens. The eyepiece lens 13 is fitted into the eyepiece frame 14 from behind, and the outer peripheral surface in contact with the inner peripheral surface of the eyepiece frame 14 is adhered to the eyepiece frame 14 with an adhesive.
4 is maintained airtight. This eyepiece lens 13 has a lens holder 15 that comes into contact with the peripheral edge of the rear end.
It is prevented from falling out by.
上記連結管１２の後部側は拡径にされ、接眼レ
ンズ枠１４が嵌入された後、連結管１２側からね
じを突出させて、このねじを接眼レンズ枠１４の
Ｖ字状の周縁に係入して固定している。尚、嵌合
部分は接着剤で接着してある。又、連結管１２を
回動することによつて、リレーレンズ枠１１に対
して連結管１２の固定位置をリレーレンズ系９の
光軸方向に沿つて前後に移動調整ができるように
してあり、リレーレンズ系９に対して接眼レンズ
１３の位置を調整した後、リレーレング枠１１の
前端外周の雄ねじに螺合するナツト１６で、その
調整位置に固定できるようにしてある。尚、リレ
ーレンズ系９の最後段のレンズは、リレーレンズ
押え１７で固定されている。又、上記リレーレン
ズ枠１１と連結管１２の間、及び連結管１２と接
眼レンズ枠１４の間には、それぞれ、フツ素系ゴ
ムより成るＯリング１８，１９が配設され、気密
が保持されている。 The diameter of the rear side of the connecting tube 12 is expanded, and after the eyepiece frame 14 is fitted, a screw is made to protrude from the side of the connecting tube 12, and this screw is inserted into the V-shaped periphery of the eyepiece frame 14. It is fixed. Note that the fitting portions are bonded with adhesive. Further, by rotating the connecting tube 12, the fixed position of the connecting tube 12 with respect to the relay lens frame 11 can be adjusted back and forth along the optical axis direction of the relay lens system 9. After adjusting the position of the eyepiece lens 13 with respect to the relay lens system 9, it can be fixed at the adjusted position with a nut 16 screwed into a male thread on the outer periphery of the front end of the relay lens frame 11. Note that the last stage lens of the relay lens system 9 is fixed with a relay lens holder 17. Additionally, O-rings 18 and 19 made of fluorine rubber are provided between the relay lens frame 11 and the connecting tube 12 and between the connecting tube 12 and the eyepiece frame 14, respectively, to maintain airtightness. ing.
一方、前記挿入部２内の外管５と内管６の間に
は、照明光伝送手段としてのライトガイドフアイ
バ２１が挿通され、このライトガイドフアイバ２
１の基部側は、把持部３内で屈曲されて、把持部
本体２２側部に螺着された口金支持枠２３に圧入
固着されたライトガイド口金２４まで延出されて
いる。 On the other hand, a light guide fiber 21 serving as illumination light transmission means is inserted between the outer tube 5 and the inner tube 6 in the insertion section 2.
The base side of the light guide 1 is bent within the grip 3 and extends to a light guide cap 24 that is press-fitted into a cap support frame 23 screwed onto the side of the grip main body 22 .
なお、前記ライトガイドフアイバ２１の両端部
では、隙間に接着剤が充填されて、気密が保持さ
れている。 Incidentally, at both ends of the light guide fiber 21, the gap is filled with an adhesive to maintain airtightness.
なお、前記内管６の先端部には、パイレツクス
ガラス（硼珪酸ガラス）等を用いて形成した対物
カバーガラス２５が気密を保持するように周縁が
接着剤で固着され、一方、前記把持部本体２２の
後端部には、接眼カバーガラス２６が取付けられ
る接眼カバーガラス枠２７が螺着されている。把
持部本体２２と接眼カバーガラス枠２７との嵌合
部にはＯリング２８を環装して気密構造にしてあ
る。又、接眼カバーガラス枠２７は、その後部側
からアイピース３０が螺着されている。 An objective cover glass 25 made of Pyrex glass (borosilicate glass) or the like is fixed to the distal end of the inner tube 6 with adhesive at its periphery to maintain airtightness. An eyepiece cover glass frame 27 to which an eyepiece cover glass 26 is attached is screwed to the rear end of the main body 22. An O-ring 28 is fitted around the fitting portion between the grip main body 22 and the eyepiece cover glass frame 27 to provide an airtight structure. Further, an eyepiece 30 is screwed onto the eyepiece cover glass frame 27 from the rear side thereof.
ところで、接眼窓部を閉塞するカバーガラス２
６は、第１図に示すような取付け構造で固着され
ている。 By the way, the cover glass 2 that closes the eyepiece window
6 is fixed with a mounting structure as shown in FIG.
接眼カバーガラス２６の内側の面はフランジ部
２６Ａが形成してあり、一方、接眼カバーガラス
枠２７の後端は、半径方向内側に突出するフラン
ジ部２７Ａが設けてあり、このフランジ部２７Ａ
には、接眼カバーガラス２６のフランジ部２６Ａ
を嵌入できる切欠き凹部が形成されている。しか
して、この切欠き凹部における接眼カバーガラス
２６の前面（内側の面）周縁に対向する部分で、
内周側部分が例えば0.1mm程度の幅L1で段差状に
切欠かれて空隙部３１が形成されており、この空
隙部３１に接着剤３２を充填することによつてカ
バーガラス２６を気密構造で固定できる様にして
ある。このように空隙部３１を形成し、この空隙
部３１に接着剤３２を充填してカバーガラス２６
をカバーガラス枠２７に固着することによつて、
高温・高圧の環境下において、カバーガラス２６
とカバーガラス枠２７との熱膨脹係数が異る場合
にも、接着剤３２が緩衝剤として機能できるよう
にして、接着部分が剥れてしまうのを防止できる
ようにしている。尚、上記空隙部３１の段差の幅
Ｌは接眼カバーガラス２６の外径の0.5％〜５％
程度が効果的である。 The inner surface of the eyepiece cover glass 26 is formed with a flange portion 26A, while the rear end of the eyepiece cover glass frame 27 is provided with a flange portion 27A that protrudes inward in the radial direction.
The flange portion 26A of the eyepiece cover glass 26 is shown in FIG.
A notch is formed into which the material can be inserted. Therefore, in the portion facing the front (inner surface) periphery of the eyepiece cover glass 26 in this notch recess,
A gap 31 is formed by cutting the inner circumferential side in a stepped shape with a width L1 of about 0.1 mm, for example, and by filling this gap 31 with an adhesive 32, the cover glass 26 is made into an airtight structure. It is designed so that it can be fixed. The void 31 is formed in this way, and the void 31 is filled with adhesive 32 to attach the cover glass 26.
By fixing it to the cover glass frame 27,
In a high temperature and high pressure environment, the cover glass 26
Even if the thermal expansion coefficients of the cover glass frame 27 and the cover glass frame 27 are different, the adhesive 32 can function as a buffer to prevent the adhesive portion from peeling off. Note that the width L of the step of the cavity 31 is 0.5% to 5% of the outer diameter of the eyepiece cover glass 26.
The degree is effective.
上記接着剤３２としては、固化した状態におけ
る熱膨脹係数がカバーガラス２６とカバーガラス
枠２７の両熱膨脹係数の間になる部材が望まし
い。又、固化した状態でも、弾性を有したり粘着
力の大きい物質を用いるとより有効である。 The adhesive 32 is preferably a member whose coefficient of thermal expansion in a solidified state is between the coefficients of thermal expansion of the cover glass 26 and the cover glass frame 27. Further, it is more effective to use a substance that has elasticity or has high adhesive strength even in a solidified state.
上記カバーガラス２６のフランジ部２６Ａ後面
側は、アイピース３１の突縁部３１Ａで圧接して
固定される。 The rear surface side of the flange portion 26A of the cover glass 26 is pressed and fixed by the projecting edge portion 31A of the eyepiece 31.
このように構成された第１実施例によれば、接
眼カバーガラス２６が取付けられる接眼カバーガ
ラス枠２７に空隙部３７を設け接着剤３２を充填
して固着して、カバーガラス２６とカバーガラス
枠２７との間に層状の接着剤３２部分を形成して
いる。このため、内視鏡１が、高圧蒸気滅菌法に
よつて、消毒される場合のように高温高圧の水蒸
気中にさらされた場合、接眼カバーガラス２６と
接眼カバーガラス枠２７とが異る熱膨脹係数によ
つて変形しても、空隙部３１の接着剤３２が緩衝
剤として作用し、接眼カバーガラス２６と接眼カ
バーガラス枠２７とが剥離して水蒸気が内視鏡１
内に浸入してしまう不具合を有効に防止できる。 According to the first embodiment configured in this way, a cavity 37 is provided in the eyepiece cover glass frame 27 to which the eyepiece cover glass 26 is attached, and the gap 37 is filled with the adhesive 32 and fixed, thereby bonding the cover glass 26 and the cover glass frame. A layered adhesive 32 is formed between the adhesive 27 and the adhesive 32. Therefore, when the endoscope 1 is exposed to high-temperature, high-pressure water vapor, such as when being sterilized by high-pressure steam sterilization, the eyepiece cover glass 26 and the eyepiece cover glass frame 27 undergo different thermal expansions. Even if the deformation occurs due to the coefficient, the adhesive 32 in the cavity 31 acts as a buffer, and the eyepiece cover glass 26 and the eyepiece cover glass frame 27 separate, causing water vapor to flow into the endoscope 1.
It is possible to effectively prevent problems caused by infiltration.
第３図は本考案の第２実施例を示す。この第２
実施例は、第１図に示す第１実施例において、フ
ランジ部２６Ａの外周側面に接触する接眼カバー
ガラス枠２７の後端内周部分にも例えば幅L2の
空隙部３５を設け、この空隙部３５に接着剤３２
を充填してカバーガラス２６を固定するようにし
ている。 FIG. 3 shows a second embodiment of the invention. This second
In this embodiment, in the first embodiment shown in FIG. 1, a gap 35 having a width L 2 , for example, is provided also in the inner peripheral portion of the rear end of the eyepiece cover glass frame 27 that contacts the outer peripheral side surface of the flange portion 26A. Adhesive 32 to part 35
to fix the cover glass 26.
この第２実施例は外周方向に対する接眼カバー
ガラス２６と接眼カバーガラス枠２７両熱膨脹係
数の差異に対してより有効に対応できる。 This second embodiment can more effectively deal with the difference in the thermal expansion coefficients of the eyepiece cover glass 26 and the eyepiece cover glass frame 27 in the outer circumferential direction.
第４図は本考案の第３実施例の主要部を示す。 FIG. 4 shows the main parts of a third embodiment of the present invention.
この第３実施例は、例えば上記第１実施例にお
いて、接眼カバーガラス２６のフランジ部２６Ａ
後面側をアイピース３０の突縁部３０Ａで圧接し
ないで、接眼カバーガラス枠２７の後端外周が圧
入される接眼カバーガラス押え枠４１の後端の突
縁部４１Ａで圧接保持されている。 This third embodiment is different from the flange portion 26A of the eyepiece cover glass 26 in the first embodiment, for example.
The rear surface side is not pressed against the projecting edge 30A of the eyepiece 30, but is held under pressure by the projecting edge 41A at the rear end of the eyepiece cover glass holding frame 41 into which the outer periphery of the rear end of the eyepiece cover glass frame 27 is press-fitted.
この第３実施例は上記第１実施例とほぼ同様の
作用効果を有する。 This third embodiment has substantially the same effects as the first embodiment.
この第３実施例は第２実施例に対しても適用で
きる。 This third embodiment can also be applied to the second embodiment.
第５図は本考案の第４実施例の主要部を示す。 FIG. 5 shows the main parts of a fourth embodiment of the present invention.
この第４実施例は、上記第３実施例には、接眼
カバーガラス押え枠４１は、接眼カバーガラス枠
２７の後端外周の雄ねじに螺合する雌ねじが形成
された接眼カバーガラス押え枠４１′が用いられ、
接眼カバーガラス２６を圧着している。 This fourth embodiment is different from the third embodiment in that the eyepiece cover glass holding frame 41 is formed with a female screw thread that engages with a male thread on the outer periphery of the rear end of the eyepiece cover glass frame 27. is used,
The eyepiece cover glass 26 is crimped.
この第４実施例は上記第１又は第３実施例とほ
ぼ同様の作用効果を有する。この第３実施例は、
第２実施例に対しても適用できる。 This fourth embodiment has substantially the same effects as the first or third embodiment. This third embodiment is
It can also be applied to the second embodiment.
尚、本考案が適用される内視鏡１におけるライ
トガイドの手元側の固定機構として第６図に示す
ような構造にすることができる。 Note that the fixing mechanism on the proximal side of the light guide in the endoscope 1 to which the present invention is applied may have a structure as shown in FIG. 6.
即ち、ライトガイド２１の照明光の入射端は、
ライトガイド口金２４を介して口金支持枠２３に
圧入固定されている。 That is, the incident end of the illumination light of the light guide 21 is
It is press-fitted and fixed to the base support frame 23 via the light guide base 24 .
上記ライトガイド２１を口金２４を介して固定
する場合、第７図に示すように、ライトガイド２
１を口金支持枠２３を通した後、ライトガイド２
１を結束させた口金２４を下方に移動して該口金
２４を口金支持枠２３に圧入し、口金２３及び支
持枠２３から突出する端面を切断して切断面を研
磨すれば良い。このようにして固定すると、口金
２４を用いないでライトガイド２１を支持枠２３
に直接固定する従来例における支持枠２３の内径
を（上記口金２４の内径程度に）小さくしなけれ
ばならず、挿通の際に折損してしまうことを防止
できる。つまり口金２４及び口金支持枠（口金取
付枠）２３を用いると、折損することなく容易に
ライトガイド２１の入射端を固着できる。 When the light guide 21 is fixed via the base 24, as shown in FIG.
1 through the base support frame 23, the light guide 2
1 tied together, the cap 24 is press-fitted into the cap support frame 23, the cap 23 and the end surface protruding from the support frame 23 are cut, and the cut surfaces are polished. When fixed in this way, the light guide 21 can be attached to the support frame 23 without using the base 24.
In the conventional example in which the support frame 23 is directly fixed to the support frame 23, the inner diameter must be made small (about the inner diameter of the base 24), and breakage during insertion can be prevented. That is, by using the cap 24 and the cap support frame (cap attachment frame) 23, the incident end of the light guide 21 can be easily fixed without breaking.
尚、上記説明では口金２４を移動させる様にし
ているが、口金２４ごと、ライトガイド２１を移
動させても良い。この場合には、挿入部先端側か
らライトガイド２１を引くようにすれば良い。 In the above description, the base 24 is moved, but the light guide 21 may be moved together with the base 24. In this case, the light guide 21 may be pulled from the distal end side of the insertion portion.
尚、ライトガイド口金としては、上述したもの
に限らず、第８図に示すように、支持枠２３′の
テーパ状に拡径となる側の端部をテーパ状に切欠
いた端面にした口金２４′でも良い。尚、第８図
では把持部本体３′は第２図又は第６図に示すも
のと異なる構造にしてある。又この図では外管５
と同心となる内管６の外側の空隙にライトガイド
２１が挿通してある。尚この内管６内にシステム
チユーブ（図示せず）が収納される。 Note that the light guide cap is not limited to the one described above, and as shown in FIG. 8, a cap 24 in which the end of the support frame 23' on the side where the diameter increases in a tapered shape is cut out in a tapered shape is used. ' is also fine. In FIG. 8, the grip main body 3' has a structure different from that shown in FIG. 2 or FIG. 6. Also, in this figure, the outer tube 5
A light guide 21 is inserted into a gap on the outside of the inner tube 6, which is concentric with the inner tube 6. A system tube (not shown) is housed within this inner tube 6.
尚、本考案は上述した各実施例を組合わせた
り、接眼カバーガラス側の取付け機構を対物カバ
ーガラス側の取付け機構に適用したり、又はその
逆に適用したりすることもできる。又、対物カバ
ーガラスを凹レンズ又は凸レンズ状にしたり、接
眼カバーガラスをレンズ状にしたものに対しても
適用できる。 It should be noted that the present invention can also be applied by combining the above-mentioned embodiments, by applying the attachment mechanism on the eyepiece cover glass side to the attachment mechanism on the objective cover glass side, or vice versa. The present invention can also be applied to objects in which the objective cover glass has a concave or convex lens shape, or the eyepiece cover glass has a lens shape.
［考案の効果］
以上述べたように本考案によれば、カバーガラ
スを取付けるカバーガラス枠に層状の空隙部を設
け、その空隙部に接着剤を充填してカバーガラス
を固定するようにしてあるので、内視鏡が高温高
圧下の水蒸気で消毒に行う場合にも、カバーガラ
スとカバーガラス枠との熱膨脹係数による変形を
接着剤が吸収して剥離して水蒸気が内視鏡内に混
入してしまうことを防止できる。[Effects of the invention] As described above, according to the invention, layered voids are provided in the cover glass frame to which the cover glass is attached, and the voids are filled with adhesive to fix the cover glass. Therefore, even when endoscopes are disinfected with steam under high temperature and high pressure, the adhesive absorbs the deformation of the cover glass and cover glass frame due to their coefficient of thermal expansion, causing them to separate and allowing steam to enter the endoscope. You can prevent this from happening.
第１図及び第２図は本考案の第１実施例に係
り、第１図は第１実施例における接眼カバーガラ
ス周辺を示す断面図、第２図は第１実施例の内視
鏡の構造を示す断面図、第３図は本考案の第２実
施例の主要部を示す断面図、第４図は本考案の第
３実施例の主要部を示す断面図、第５図は本考案
の第４実施例の主要部を示す断面図、第６図はラ
イトガイドの入射端周辺を示す断面図、第７図は
ライトガイドを口金を用いて固定する途中の工程
を示す説明図、第８図は第６図とは異なる口金を
用いたライトガイドの入射端周辺を示す断面図で
ある。
１……内視鏡、２……挿入部、３……把持部、
４……接眼部、１３……カバーガラス、２５……
対物カバーガラス、２６……接眼カバーガラス、
２６Ａ……フランジ部、２７……接眼カバーガラ
ス枠、２７Ａ……フランジ部、３０……アイピー
ス、３１……空隙部、３２……接着剤。
1 and 2 relate to the first embodiment of the present invention, FIG. 1 is a sectional view showing the vicinity of the eyepiece cover glass in the first embodiment, and FIG. 2 is the structure of the endoscope of the first embodiment. 3 is a sectional view showing the main part of the second embodiment of the invention, FIG. 4 is a sectional view showing the main part of the third embodiment of the invention, and FIG. 5 is a sectional view showing the main part of the second embodiment of the invention. 6 is a sectional view showing the main parts of the fourth embodiment, FIG. 6 is a sectional view showing the vicinity of the incident end of the light guide, FIG. 7 is an explanatory view showing the process of fixing the light guide using the base, This figure is a sectional view showing the vicinity of the incident end of a light guide using a base different from that in FIG. 6. 1... Endoscope, 2... Insertion section, 3... Gripping section,
4... Eyepiece section, 13... Cover glass, 25...
Objective cover glass, 26...eyepiece cover glass,
26A...Flange portion, 27...Eyepiece cover glass frame, 27A...Flange portion, 30...Eyepiece, 31...Gap portion, 32...Adhesive.
Claims (1)
を備えた内視鏡において、 カバーガラスが取り付けられるカバーガラス枠
における、カバーガラス周縁に対向する部分をカ
バーガラス外径と一致嵌合させ、カバーガラス平
面部に対向する部分の一部に空隙部を設け、該空
隙部に接着剤を充填して固定したことを特徴とす
る内視鏡。[Scope of Claim for Utility Model Registration] In an endoscope equipped with an observation optical system whose outer surface is closed by a cover glass, the outer diameter of the cover glass is defined as the part of the cover glass frame to which the cover glass is attached, which faces the periphery of the cover glass. What is claimed is: 1. An endoscope characterized in that a gap is provided in a part of a portion facing a flat surface of a cover glass, and the gap is filled with an adhesive to be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986076379U JPH0532822Y2 (en) | 1986-05-21 | 1986-05-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986076379U JPH0532822Y2 (en) | 1986-05-21 | 1986-05-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62188723U JPS62188723U (en) | 1987-12-01 |
| JPH0532822Y2 true JPH0532822Y2 (en) | 1993-08-23 |
Family
ID=30923399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986076379U Expired - Lifetime JPH0532822Y2 (en) | 1986-05-21 | 1986-05-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532822Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2993281B2 (en) * | 1992-06-29 | 1999-12-20 | 富士写真光機株式会社 | Endoscope eyepiece |
| JPWO2015119296A1 (en) * | 2014-02-10 | 2017-03-30 | 日本電産サンキョー株式会社 | Optical unit manufacturing method and optical unit |
| DE102015202002A1 (en) | 2015-02-05 | 2016-08-11 | Olympus Winter & Ibe Gmbh | Eyepiece device and surgical instrument with an eyepiece device |
| DE102015202137A1 (en) * | 2015-02-06 | 2016-08-11 | Olympus Winter & Ibe Gmbh | Eyepiece for a surgical instrument |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5731832A (en) * | 1980-08-01 | 1982-02-20 | Olympus Optical Co | Cover glass attachment of endoscope |
| JPS5731831A (en) * | 1980-08-01 | 1982-02-20 | Olympus Optical Co | Endoscope |
| JPS58184921A (en) * | 1982-04-23 | 1983-10-28 | Olympus Optical Co Ltd | Cover glass attaching device of endoscope |
| JPS58184922A (en) * | 1982-04-23 | 1983-10-28 | Olympus Optical Co Ltd | Cover glass attaching device of endoscope |
| JPS603811B2 (en) * | 1978-12-26 | 1985-01-30 | 株式会社ロツテ | Method for enhancing flavor retention of chewing gum with center |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603811U (en) * | 1983-06-20 | 1985-01-12 | オリンパス光学工業株式会社 | Endoscope cover glass attachment device |
-
1986
- 1986-05-21 JP JP1986076379U patent/JPH0532822Y2/ja not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603811B2 (en) * | 1978-12-26 | 1985-01-30 | 株式会社ロツテ | Method for enhancing flavor retention of chewing gum with center |
| JPS5731832A (en) * | 1980-08-01 | 1982-02-20 | Olympus Optical Co | Cover glass attachment of endoscope |
| JPS5731831A (en) * | 1980-08-01 | 1982-02-20 | Olympus Optical Co | Endoscope |
| JPS58184921A (en) * | 1982-04-23 | 1983-10-28 | Olympus Optical Co Ltd | Cover glass attaching device of endoscope |
| JPS58184922A (en) * | 1982-04-23 | 1983-10-28 | Olympus Optical Co Ltd | Cover glass attaching device of endoscope |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62188723U (en) | 1987-12-01 |
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