JPS6095418A - Hard endoscope - Google Patents
Hard endoscopeInfo
- Publication number
- JPS6095418A JPS6095418A JP58202227A JP20222783A JPS6095418A JP S6095418 A JPS6095418 A JP S6095418A JP 58202227 A JP58202227 A JP 58202227A JP 20222783 A JP20222783 A JP 20222783A JP S6095418 A JPS6095418 A JP S6095418A
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- filter
- light
- guide fiber
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00096—Optical elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/12—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
- A61B1/127—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements with means for preventing fogging
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2423—Optical details of the distal end
- G02B23/243—Objectives for endoscopes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/26—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0006—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Optics & Photonics (AREA)
- Surgery (AREA)
- General Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biophysics (AREA)
- Astronomy & Astrophysics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は硬性内視鏡に関し、更に詳しくは内視鏡観察時
に対物レンズ前面に付着する水分による曇りを防止する
と共に、ライトガイドファイバー照射面及び対物レンズ
の保護を可能とした硬性内視鏡に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rigid endoscope, and more specifically, it is possible to prevent fogging due to moisture adhering to the front surface of the objective lens during endoscopic observation, and to protect the light guide fiber irradiation surface and the objective lens. This article concerns a rigid endoscope.
従来の内視鏡において、対物レンズ先端部に水滴等が付
着した場合或いは対物レンズ前面に付着した水滴等によ
って曇りが生じ像観察の妨げとなる場合には、送気口か
らの送気に。１：って水滴を飛散させたり、対物レンズ
前面が曇るたびに内視鏡を体内から抜き取り水滴及び曇
りの除去をしていた。また、硬性内視鏡においては対物
レンズ前面にシリコン等の曇り止めを塗布して使用して
いたが、１０数秒から長くても２全稈で曇りを生じてし
まうためシャープな像の＠ｌ祭を連続してなし得す、長
時間体内に挿入したままの状態での使用が困難であり、
更にこれらの現象は声帯及び気管支等を内視鏡観察する
際に顕著で、内視鏡の体内への挿入、抜き取り、水滴除
去、曇り市め塗布の繰り返しであった。また、従来の内
視鏡は対物レンズ前面及びライトガイドファイバー照！
）１面が外部に露出しているため傷、汚れ、破損等が生
じやすいが、対物レンズは機構上交換が難しく交換に際
して光学的に大幅な再調整が必要となるので、上記の傷
、汚れ、破損等が内視鏡の使用寿命を縮める一因となっ
ていた。In conventional endoscopes, if water droplets or the like adhere to the tip of the objective lens, or if water droplets or the like adhere to the front surface of the objective lens cause clouding and obstruct image observation, air is supplied from the air supply port. 1: Every time water droplets were scattered or the front surface of the objective lens became cloudy, the endoscope was removed from the body and the water droplets and fog were removed. In addition, in rigid endoscopes, anti-fog coating such as silicone was applied to the front surface of the objective lens, but this resulted in fogging in two entire culms for at least 10 seconds or longer, resulting in a sharp image. It is difficult to use the device while it is inserted into the body for a long time.
Furthermore, these phenomena are noticeable when observing the vocal cords, bronchi, etc. with an endoscope, which requires repeated insertion of the endoscope into the body, withdrawal, removal of water droplets, and application of a cloudy coating. In addition, conventional endoscopes have an objective lens in front and a light guide fiber!
) Because one surface is exposed to the outside, it is easy to get scratches, dirt, damage, etc. However, since the objective lens is mechanically difficult to replace and requires major optical readjustment when replacing, the scratches, dirt, etc. , breakage, etc. were one of the causes of shortening the usable life of the endoscope.
本発明は上述の点に鑑みてなされたものであり、対物レ
ンズ及びライトガイドファイバーの前面にわたって赤外
領域を吸収し可視領域を透過させるバンドパスフィルタ
ーを配設することによって対物レンズ及びライトガイド
ファイバー照射面の保護を行なうと共に、内視鏡ｔｉＩ
ｌ察時に対物Ｉメンズ前面に付着する水分による曇りを
防止する硬性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 points, and by disposing a bandpass filter across the front surface of the objective lens and light guide fiber that absorbs the infrared region and transmits the visible region, the objective lens and the light guide fiber can be improved. In addition to protecting the irradiation surface, the endoscope tiI
An object of the present invention is to provide a rigid endoscope that prevents fogging due to moisture adhering to the front surface of an objective object during observation.
以下図面に基づいて本発明の詳細な説明する。The present invention will be described in detail below based on the drawings.
第１図は従来の硬性内視鏡の対物レンズ部分の断面図で
ある。FIG. 1 is a sectional view of the objective lens portion of a conventional rigid endoscope.
第１図において、符号１で示されるレンズ枠内には対物
レンズ２及びリレーレンズが落し込まれており、防水固
定手段として前記レンズ枠１内面に接着剤によって接着
されている。また外覆チューブ３と前記レンズ枠１の間
にはライ１−ガイドファイバー４が配置されている。In FIG. 1, an objective lens 2 and a relay lens are inserted into a lens frame designated by reference numeral 1, and are bonded to the inner surface of the lens frame 1 with an adhesive as waterproof fixing means. Further, a lie 1-guide fiber 4 is arranged between the outer tube 3 and the lens frame 1.
ここで、前記対物レンズ２の対物面２ａとライ１〜ガイ
ドフアイバー４の照射側端面４ａは外部に露出している
ため、前述したように傷、汚ノシ、破損等が生じやすい
が、レンズ枠１内に落し込まれた対物レンズ２は接着剤
によってレンズ伜１内面に接着されているためにレンズ
交換がほとんど不可能となっている。更に、対物レンズ
２．ライトガイドファイバー４の周面が接触する前記レ
ンズ枠 ・】及び外覆チューブ３は、金属で構成され図
示しない内視鏡操作部に一端が接続されているため、常
に人体外部温度によって冷却されていることになり、対
物レンズ２が配置される先端近傍においても人体内部温
度に比して低温となるので、水滴が露結しやすい状態と
なっている。Here, since the objective surface 2a of the objective lens 2 and the irradiation side end surfaces 4a of the fibers 1 to 4 are exposed to the outside, they are likely to be scratched, stained, damaged, etc. as described above. The objective lens 2 that has been inserted into the lens 1 is bonded to the inner surface of the lens 1 with an adhesive, making it almost impossible to replace the lens. Furthermore, objective lens 2. The lens frame and outer tube 3, with which the peripheral surface of the light guide fiber 4 comes into contact, are made of metal and have one end connected to an endoscope operating section (not shown), so they are always cooled by the external temperature of the human body. As a result, even near the tip where the objective lens 2 is arranged, the temperature is low compared to the internal temperature of the human body, making it easy for water droplets to form.
第２図に示されるのは本発明の一実施例であり、硬性内
視鏡の対物レンズ部分の断面図を示す。An embodiment of the present invention is shown in FIG. 2, which is a sectional view of an objective lens portion of a rigid endoscope.
第２図において、対物レンズ枠５内面に固着される対物
レンズ６及び前記対物レンズ枠５と外覆チューブ７との
隙間に照射側端面８ａを有するライトガイドファイバー
８の前面には、フィルター９が、前記外覆チューブ７と
捻子部１０ａを介して着脱可能に嵌合する保護環１０に
よって取付けられており、前記フィルター９と外覆チュ
ーブ７の先端部７ａとの間には樹脂性スペーサー１１が
配設され、前記・保護環１０の曲げ部１０ｂによって対
物レンズ６の対物面６ａ側に押圧されるフィル３−
ター９を固定すると共に、硝材等で構成されるフィルタ
ー９が外部からの抑圧力によって撓んだ場合にも対物レ
ンズ６の対物面６ａ及びライトガイドファイバー８の照
射側端面８ａに接触して傷伺けることがないように空間
を設け、更に該空間内に水等が浸入するのを防止してい
る。In FIG. 2, a filter 9 is installed on the front surface of an objective lens 6 fixed to the inner surface of the objective lens frame 5 and a light guide fiber 8 having an irradiation side end surface 8a in the gap between the objective lens frame 5 and the outer cover tube 7. , is attached by a protective ring 10 that is removably fitted to the outer tube 7 via a threaded portion 10a, and a resin spacer 11 is provided between the filter 9 and the tip 7a of the outer tube 7. The filter 9, which is arranged and pressed against the objective surface 6a of the objective lens 6 by the bent portion 10b of the protective ring 10, is fixed, and the filter 9, which is made of a glass material or the like, resists the suppressing force from the outside. A space is provided so that the object surface 6a of the objective lens 6 and the irradiation side end surface 8a of the light guide fiber 8 will not come into contact and cause damage even if the light guide fiber 8 is bent, and water etc. will not infiltrate into the space. It prevents
前記フィルター９は、対物側の第１面９ａに被写体から
の反射光に対する反射防止膜が蒸着され、第２面９ｂに
は赤外領域の光を吸収し可視領域の光を透過するよう薄
膜が蒸着されておりバンドパスフィルターとなっている
。The filter 9 has an anti-reflection film deposited on the first surface 9a on the object side to prevent light reflected from the object, and a thin film on the second surface 9b to absorb light in the infrared region and transmit light in the visible region. It is vapor-deposited and serves as a bandpass filter.
以上のように構成された本発明に係る硬性内視鏡におい
て、図示しない光源を点灯させると、光線がライトガイ
ドファイバー８を通って照射側端面８ａから照射される
が、照射側端面６ａの前面に配置されたフィルター９は
」二連のようにバンドパスフィルターとなっていて赤外
領域の光を吸収するので、赤外領域の光の作用によりラ
イルター９の温度は上昇し、フィルター９の第１面９ａ
の温度も上昇する。In the rigid endoscope according to the present invention configured as described above, when a light source (not shown) is turned on, a light beam passes through the light guide fiber 8 and is irradiated from the irradiation side end surface 8a. The filters 9 arranged at 1st page 9a
temperature also increases.
４−
従って、体内挿入時にフィルター９の第１面９ａと観察
雰囲気温度との温度差をなくすことができるので水分の
露結を防止でき、更に観察雰囲気温度よりもフィルター
９の第１面９ａの温度を高くすることによって水分の蒸
発を促進することが可能となり、ｍ余光学系対物面の曇
りによって像観察が妨げられるといった問題を解消でき
る。4- Therefore, when the filter 9 is inserted into the body, the temperature difference between the first surface 9a of the filter 9 and the observation atmosphere temperature can be eliminated, so moisture condensation can be prevented. By increasing the temperature, it is possible to accelerate the evaporation of water, and it is possible to solve the problem that image observation is obstructed by clouding of the objective surface of the optical system.
また、フィルター９は保護環１０の着脱操作によって容
易に交換することができるので、光源の光質にあわせて
フィルターを変えることにより常に適正な観察像を得る
ことができる。Furthermore, since the filter 9 can be easily replaced by attaching and detaching the protective ring 10, an appropriate observation image can always be obtained by changing the filter according to the light quality of the light source.
以上説明したように本発明に係る硬性内視鏡においては
、対物レンズの対物面及びライトガイドファイバーの照
射側端面の前面にわたって着脱可能に赤外領域の光を吸
収し可視領域の光を透過するバンドパスフィルターを配
設することによって、対物レンズ及びライトガイドファ
イバーの保護を行なうと共に、像観察の妨げとなる観察
光学系の曇りを防止できる等その効果は大である。As explained above, in the rigid endoscope according to the present invention, the objective surface of the objective lens and the front surface of the irradiation side end surface of the light guide fiber are removably capable of absorbing light in the infrared region and transmitting light in the visible region. By providing a bandpass filter, the objective lens and the light guide fiber can be protected, and the observation optical system can be prevented from becoming cloudy, which would interfere with image observation.
第１図は従来の硬性内視鏡の対物レンズ部分の断面図、
第２図は本発明に係る硬性内視鏡の対物レンズ部分の断
面図。
２．６・・・対物レンズ
４．８・・・ライトガイドファイバー
９・・・フィルター（バンドパスフィルター）７−Figure 1 is a cross-sectional view of the objective lens portion of a conventional rigid endoscope.
FIG. 2 is a sectional view of the objective lens portion of the rigid endoscope according to the present invention. 2.6... Objective lens 4.8... Light guide fiber 9... Filter (band pass filter) 7-
Claims (1)
硬性内視鏡において、前記観察光学系の対物レンズ対物
面及び前記ライ１−ガイドファイバー照射側端面の前面
にわたって赤外領域の光を吸収し可視領域の光を透過す
るバンドパスフィルターを配設したことを特徴とする硬
性内視鏡。In a rigid endoscope in which a light guide fiber is arranged around the outer periphery of an observation optical system, light in the infrared region is absorbed across the objective surface of the objective lens of the observation optical system and the front surface of the end face on the irradiation side of the guide fiber. A rigid endoscope that is equipped with a bandpass filter that transmits light in a certain area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58202227A JPS6095418A (en) | 1983-10-28 | 1983-10-28 | Hard endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58202227A JPS6095418A (en) | 1983-10-28 | 1983-10-28 | Hard endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6095418A true JPS6095418A (en) | 1985-05-28 |
| JPH0318686B2 JPH0318686B2 (en) | 1991-03-13 |
Family
ID=16454061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58202227A Granted JPS6095418A (en) | 1983-10-28 | 1983-10-28 | Hard endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6095418A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140200406A1 (en) * | 2013-01-17 | 2014-07-17 | David B. Bennett | Anti-fogging device for endoscope |
| KR20160118236A (en) * | 2013-12-20 | 2016-10-11 | 메데온 바이오디자인, 인코포레이티드 | Lens cover modification |
| JP2017074372A (en) * | 2015-10-14 | 2017-04-20 | デクセリアルズ株式会社 | Optical film, connecting member, endoscope camera drape, endoscope device, medical system, optical film production method, and connecting member production method |
| WO2020041060A1 (en) * | 2018-08-21 | 2020-02-27 | Verily Life Sciences Llc | Endoscope defogging |
| US10582832B2 (en) | 2013-01-17 | 2020-03-10 | Stryker Corporation | System for altering functions of at least one surgical device dependent upon information saved in an endoscope related to the endoscope |
-
1983
- 1983-10-28 JP JP58202227A patent/JPS6095418A/en active Granted
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140200406A1 (en) * | 2013-01-17 | 2014-07-17 | David B. Bennett | Anti-fogging device for endoscope |
| US10537236B2 (en) * | 2013-01-17 | 2020-01-21 | Stryker Corporation | Anti-fogging device for endoscope |
| US10582832B2 (en) | 2013-01-17 | 2020-03-10 | Stryker Corporation | System for altering functions of at least one surgical device dependent upon information saved in an endoscope related to the endoscope |
| US11510562B2 (en) | 2013-01-17 | 2022-11-29 | Stryker Corporation | Anti-fogging device for endoscope |
| KR20160118236A (en) * | 2013-12-20 | 2016-10-11 | 메데온 바이오디자인, 인코포레이티드 | Lens cover modification |
| JP2017074372A (en) * | 2015-10-14 | 2017-04-20 | デクセリアルズ株式会社 | Optical film, connecting member, endoscope camera drape, endoscope device, medical system, optical film production method, and connecting member production method |
| EP3338616A4 (en) * | 2015-10-14 | 2019-05-22 | Dexerials Corporation | Optical film, connecting member, endoscope camera drape, endoscope device, medical system, optical film production method, and connecting member production method |
| US11701195B2 (en) | 2015-10-14 | 2023-07-18 | Dexerials Corporation | Optical film, connecting member, endoscope camera drape, endoscope device, medical system, optical film production method, and connecting member production method |
| WO2020041060A1 (en) * | 2018-08-21 | 2020-02-27 | Verily Life Sciences Llc | Endoscope defogging |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0318686B2 (en) | 1991-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0535374Y2 (en) | ||
| US4350150A (en) | Structure of a light-receiving end portion of an endoscope light guide | |
| GB2241793A (en) | Thermal camera arrangement | |
| JP2832851B2 (en) | Endoscope protection device | |
| US5522006A (en) | Endoscopic light source connector | |
| JPH03264037A (en) | Protecting device for endoscope | |
| JPH0412727A (en) | Endoscope | |
| JPS6095418A (en) | Hard endoscope | |
| US6021520A (en) | Eyeshield for a welder's mask | |
| JP4744768B2 (en) | Anti-glare device | |
| ATE254299T1 (en) | SURGICAL MICROSCOPE DRAWN WITH AN ANTIHALO WINDOW | |
| JP2006239185A (en) | Distal end part of side-viewing type endoscope | |
| JPH0644902B2 (en) | Endoscope | |
| JP2868228B2 (en) | Endoscope tip | |
| JP3068702B2 (en) | Light source device for endoscope | |
| JPH07124100A (en) | Protection apparatus for endoscope | |
| JPH105171A (en) | Endoscope protective cover | |
| JP2787834B2 (en) | Endoscope protection device | |
| JPH10148744A (en) | Lens device | |
| JPH0143687Y2 (en) | ||
| JPS6333209Y2 (en) | ||
| JP3312480B2 (en) | Light guide connector for endoscope | |
| JP4172959B2 (en) | End of the endoscope | |
| JPH09285440A (en) | Protection cover type endoscope apparatus | |
| JPH03264038A (en) | Protecting device for endoscope |