JPH02106705A - Optical fiber probe - Google Patents
Optical fiber probeInfo
- Publication number
- JPH02106705A JPH02106705A JP63260096A JP26009688A JPH02106705A JP H02106705 A JPH02106705 A JP H02106705A JP 63260096 A JP63260096 A JP 63260096A JP 26009688 A JP26009688 A JP 26009688A JP H02106705 A JPH02106705 A JP H02106705A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- window
- infrared
- laser light
- antireflection film
- 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
- 239000013307 optical fiber Substances 0.000 title claims abstract description 53
- 239000000523 sample Substances 0.000 title claims description 13
- 239000010432 diamond Substances 0.000 claims abstract description 16
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 abstract description 5
- 230000020169 heat generation Effects 0.000 abstract description 2
- YAFKGUAJYKXPDI-UHFFFAOYSA-J lead tetrafluoride Chemical compound F[Pb](F)(F)F YAFKGUAJYKXPDI-UHFFFAOYSA-J 0.000 abstract description 2
- 239000007888 film coating Substances 0.000 abstract 3
- 238000009501 film coating Methods 0.000 abstract 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 210000001124 body fluid Anatomy 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000010839 body fluid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 210000004127 vitreous body Anatomy 0.000 description 2
- 238000002430 laser surgery Methods 0.000 description 1
- 238000013532 laser treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002062 proliferating effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Laser Surgery Devices (AREA)
Abstract
Description
【発明の詳細な説明】
産業−にの利用分野
本発明はレーザ光を光ファイバで導き、人体や加工物等
の所定の位置にレーザ光を照射するレーサ照射装置に用
いられる光フアイバプローブに関するものである。Detailed Description of the Invention Field of Application in Industry The present invention relates to an optical fiber probe used in a laser irradiation device that guides laser light through an optical fiber and irradiates a predetermined position on a human body, a workpiece, etc. It is.
従来の技術
ＣＯ２レーザなとの赤外レーザ光はレーザ手術、あるい
はレーザ加工などに広く用いられている。2. Description of the Related Art Infrared laser beams such as CO2 lasers are widely used in laser surgery, laser processing, and the like.
ＣＯ２レーケーサ光長が１０．６μｍと長く、光通信な
とに用いられる石英ファイバには通らないので、ミラー
を組み合わせたミラー関節導光路により所定位置に導か
れていた。しかし最近、ＣＯ２レーザを通す赤外光ファ
イバが開発され、赤外光ファイバを組み込んだ細い光フ
アイバプローブによりＣＯ２レーザが導かれるようにな
った。Since the CO2 laser light length is as long as 10.6 μm and cannot pass through quartz fibers used for optical communications, it is guided to a predetermined position by a mirror-joint light guiding path that is a combination of mirrors. However, recently, an infrared optical fiber that passes the CO2 laser has been developed, and the CO2 laser can now be guided by a thin optical fiber probe incorporating the infrared optical fiber.
従来は被照射体の外部からレーザ光を照射するやり方が
一般的であったが、この細い光フアイバプローブを利用
して、これを被照射体の内部に挿入して、内部をレーザ
照射することが試みられるようになってきた。例えば医
療分野においては、眼科のレーザ治療として、硝子体内
に光フアイバプローブを刺し込み、硝子体内の増殖膜の
切開なとの手術をおこなうことや、内視鏡なとと組み合
わせて胃や肺部ヘレーザ照射することなどが試みられよ
うとしている。Conventionally, the common method was to irradiate the object with laser light from outside, but now we can use this thin optical fiber probe, insert it inside the object, and irradiate the inside with laser light. has begun to be attempted. For example, in the medical field, laser treatment in ophthalmology involves inserting an optical fiber probe into the vitreous body and performing surgery to incise the proliferative membrane within the vitreous body. Attempts are being made to use hello laser irradiation.
発明が解決しようとする課題
現在、赤外レーザ用光ファイバの材料としてはハロゲン
化金属などが用いられるが、これらは融点が３００ ’
Ｃ〜５００ ’Ｃ程度てあり、耐熱性はあまり良くない
。ところが前述のように体内などに光フアイバプローブ
を挿入して使用する場合、光ファイバの端面に体液等が
付着して汚れる場合が多く、この状態てレーザ光を通す
と付着物にレーザ光が吸収されて発熱し、その結果光フ
ァイバが焼損してしまうという場合が多かった。これを
解決するために、光ファイバの出射端後方に耐熱性と機
械強度に優れるダイヤモンドのウィンドウを配置し、イ
」着物を容易にこすり落とせるようにするとともに、少
し程度の付着物があってもその耐熱性により焼損を防止
する構成が考えられた。Problems to be Solved by the Invention At present, metal halides are used as materials for optical fibers for infrared lasers, but these have a melting point of 300'.
C to 500'C, and its heat resistance is not very good. However, as mentioned above, when using an optical fiber probe inserted into the body, the end face of the optical fiber is often contaminated with body fluids, etc., and when the laser beam is passed through in this condition, the laser beam is absorbed by the attached material. In many cases, the optical fibers were burnt out as a result of the heat generated. In order to solve this problem, we placed a diamond window with excellent heat resistance and mechanical strength behind the output end of the optical fiber, making it possible to easily scrape off the material and even if there is a small amount of deposits. A structure was devised to prevent burnout due to its heat resistance.
しかし、ダイヤモンドは屈折率が２．４程度と高く、い
わゆるフレネル反射が１面あたり１５％程度あり、ダイ
ヤモンドウィンドウの両面で３０％もレーザ光を反射し
７０％程度しかレーザ光を透過しない。そのため光フア
イバ出射端後方にダイヤモンドウィンドウを設けると、
この反射光によりウィンドウの保持部や光フアイバ出射
端が過熱し、光ファイバが焼損しやす（なるという別な
問題があった。However, diamond has a high refractive index of about 2.4 and has a so-called Fresnel reflection of about 15% per surface, and both sides of the diamond window reflect as much as 30% of the laser beam and transmit only about 70% of the laser beam. Therefore, if a diamond window is installed behind the optical fiber output end,
Another problem was that this reflected light overheated the window holder and the output end of the optical fiber, causing the optical fiber to burn out.
課題を解決するための手段
本発明は上記問題点を解決するために、赤外レーザ光を
導く赤外光ファイバと、前記赤外光ファイバ出射端後方
に配置され赤外光ファイバから出射された赤外レーザ光
を透過させるダイヤモンドのウィンドウと、前記ウィン
ドウおよび赤外光ファイバ出射端部とを内挿して係止す
る筒部材とからなり、前記ダイヤモンドのウィンドウの
内側に反射防止膜を形成したものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention includes an infrared optical fiber that guides an infrared laser beam, and an infrared laser beam that is disposed behind the output end of the infrared optical fiber and that is emitted from the infrared optical fiber. It consists of a diamond window that transmits infrared laser light, and a cylindrical member that inserts and locks the window and the output end of the infrared optical fiber, and an antireflection film is formed on the inside of the diamond window. It is.
作用 この技術的手段による作用は次のようになる。action The effect of this technical means is as follows.
赤外光ファイバから出射された赤外レーザ光は、光フア
イバ出射端後方に配置されたダイヤモンドウィンドウを
通って外部に出射される。ウィンドウの外側には操作中
に体液等が付着することがあるが、ウィンドウに耐熱性
があり、ウィンドウが焼損する前に付着物がレーザ光で
蒸発してしまい温度上昇が押さえられる。そしてウィン
ドウの内側に反射防止膜が施されているため、ウィンド
ウによるレーザ光の反射は減少し、例えば従来の半分の
１５％となり、従ってそれに起因する発熱も減少し、例
えば従来の半分となり、光ファイバの焼（員が押さえら
れる。The infrared laser beam emitted from the infrared optical fiber is emitted to the outside through a diamond window placed behind the output end of the optical fiber. Body fluids may adhere to the outside of the window during operation, but the window is heat resistant, and the laser light evaporates the adhered substances before the window burns out, suppressing temperature rise. Since an anti-reflection coating is applied on the inside of the window, the reflection of laser light by the window is reduced, for example to 15%, which is half of the conventional amount.Therefore, the heat generated by this is also reduced, for example, to half of the conventional amount, and the amount of laser light reflected by the window is reduced. Fiber burning (members are suppressed).
実施例
以下本発明の一実施例を添付図面とともに説明する。第
２図は本発明の光フアイバプローブをレーザ発振器に接
続したレーザ照射装置の外観図である。１はＣＯ２レー
ザ発振器、２はその制御部、３は本発明の光フアイバプ
ローブである。第１図は本発明による光フアイバプロー
ブ出射端部（第２図におけるＡ部）の断面図である。Ｃ
Ｏ２レーザ光はＡｇＣ１−ＡｇＢｒからなる直径０．
３ｍｍの赤外光ファイバ４に入射されてこの中を伝送さ
れる。赤外光ファイバ４の長さは１．５ｍである。EXAMPLE An example of the present invention will be described below with reference to the accompanying drawings. FIG. 2 is an external view of a laser irradiation device in which the optical fiber probe of the present invention is connected to a laser oscillator. 1 is a CO2 laser oscillator, 2 is a control section thereof, and 3 is an optical fiber probe of the present invention. FIG. 1 is a sectional view of the output end of an optical fiber probe (section A in FIG. 2) according to the present invention. C
The O2 laser beam is made of AgC1-AgBr with a diameter of 0.
The light is input into a 3 mm infrared optical fiber 4 and transmitted therethrough. The length of the infrared optical fiber 4 is 1.5 m.
これより出射されたＣＯ２レーザ光は約１５度の広がり
角をもっている。５はこの赤外光ファイバ出射端の後方
に配置され赤外光ファイバ４から出射されたＣＯ２レニ
ザ光を透過させるダイヤモンドからなるウィンドウであ
り内側だけにフッ化鉛からなる反射防止膜７が施されて
いる。ウィンドウ５の外面は汚れをこすり落として除去
することがあるため反射防止膜は施していない。６はウ
ィンドウ５と赤外ファイバ４の出射端部４ａを係止する
円筒状の筒部材である。赤外光ファイバ４から出射され
た赤外レーザ光は、光フアイバ出射端４ａの後方に配置
されたダイヤモンドウィンドウ５を通って外部に出射さ
れる。ウィンドウ５の内側には反射防止膜が施されてい
るため、ウィンドウ５による反射は外側のみの１５％程
度であり、残り７５％は透過する。反射光は筒部材６の
内面と光ファイバ４の出射部４ａに照射されるが、その
量は反射防止膜がない場合に比べて半分になっており、
光ファイバ４のを焼損を押さえている。ウィンドウ５の
外側には体液等が付着することがあるが、ウィンドウ５
に耐熱性があり、ウィンドウ５が焼損する前にか付着物
がレーザ光で蒸発してしまい温度上昇が押さえられる。The CO2 laser beam emitted from this has a spread angle of about 15 degrees. Reference numeral 5 denotes a window made of diamond which is arranged behind the output end of the infrared optical fiber 4 and transmits the CO2 laser light emitted from the infrared optical fiber 4.An antireflection film 7 made of lead fluoride is applied only on the inside. ing. The outer surface of the window 5 is not coated with an anti-reflection coating because dirt may be removed by scrubbing. Reference numeral 6 denotes a cylindrical member that locks the window 5 and the output end 4a of the infrared fiber 4. The infrared laser beam emitted from the infrared optical fiber 4 is emitted to the outside through a diamond window 5 disposed behind the optical fiber emitting end 4a. Since the inside of the window 5 is coated with an antireflection film, only about 15% of the reflection from the outside is reflected by the window 5, and the remaining 75% is transmitted. The reflected light is irradiated onto the inner surface of the cylindrical member 6 and the output part 4a of the optical fiber 4, but the amount of reflected light is halved compared to when there is no antireflection film.
This prevents the optical fiber 4 from burning out. Body fluids may adhere to the outside of the window 5, but
has heat resistance, and before the window 5 burns out, the deposits are evaporated by the laser beam, suppressing temperature rise.
発明の効果
以」二のように本発明は、赤外レーザ光を導く赤外光フ
ァイバと、前記赤外光ファイバ出射端後方に配置され赤
外光ファイバから出射された赤外レーザ光を透過させる
ダイヤモンドのウィンドウと、前記ウィンドウ、および
赤外光ファイバ出射端部とを内挿して係止する筒部材と
からなり、前記ダイヤモンドのウィンドウの内側に反射
防止膜を形成してなるもので、ウィンドウの外側に体液
等がイ（１着しても、ウィンドウに耐熱性があり、ウィ
ンドウか力“Ｌ損する前に付着物かレーザ光で蒸発して
しまい温度上昇が押さえられる。そしてウィンドウの内
側に反射防止膜が施されているため、ウィンドウによる
レーザ光の反射は減少し、従ってそれに起因する発熱も
従来のものに比較して減少するので、光ファイバの焼損
が押さえられるという優れた効果がある。Effects of the Invention As stated in ``2'', the present invention includes an infrared optical fiber that guides an infrared laser beam, and an infrared optical fiber that is arranged behind the output end of the infrared optical fiber and transmits the infrared laser beam emitted from the infrared optical fiber. It consists of a diamond window that allows the window to move, and a cylindrical member that inserts and locks the window and the output end of the infrared optical fiber, and an antireflection coating is formed on the inside of the diamond window. Even if bodily fluids etc. are deposited on the outside of the window, the window is heat resistant, and before the window is exposed to any force, it will evaporate due to deposits or laser light and the temperature rise will be suppressed. Since it is coated with an anti-reflection coating, the reflection of laser light from the window is reduced, and the resulting heat generation is also reduced compared to conventional products, which has the excellent effect of suppressing burnout of the optical fiber. .
第１図は本発明による赤外光ファイバプローブの一実施
例を示す断面図、第２図は本発明による赤外光ファイバ
プローブを用いたレーザ照射装置の外観図である。
３・・・・・・光フアイバプローブ、４・・・・・・赤
外光ファイバ、５・・・・・・ウィンドウ、６・・・・
・・筒部材、７・・・・・・反射防止膜。FIG. 1 is a sectional view showing an embodiment of an infrared optical fiber probe according to the present invention, and FIG. 2 is an external view of a laser irradiation device using the infrared optical fiber probe according to the present invention. 3... Optical fiber probe, 4... Infrared optical fiber, 5... Window, 6...
...Cylinder member, 7...Antireflection film.
Claims (1)
ァイバ出射端後方に配置され赤外光ファイバから出射さ
れた赤外レーザ光を透過させるダイヤモンドのウィンド
ウと、前記ウィンドウおよび赤外光ファイバ出射端部と
を内挿して係止する筒部材とからなり、前記ダイヤモン
ドのウィンドウの内側に反射防止膜を形成してなる光フ
ァイバプローブ。an infrared optical fiber that guides an infrared laser beam; a diamond window that is arranged behind the output end of the infrared optical fiber and that transmits the infrared laser beam emitted from the infrared optical fiber; and the window and the infrared optical fiber. An optical fiber probe comprising a cylindrical member into which an output end is inserted and locked, and an antireflection film is formed inside the diamond window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63260096A JPH0636083B2 (en) | 1988-10-14 | 1988-10-14 | Fiber optic probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63260096A JPH0636083B2 (en) | 1988-10-14 | 1988-10-14 | Fiber optic probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02106705A true JPH02106705A (en) | 1990-04-18 |
| JPH0636083B2 JPH0636083B2 (en) | 1994-05-11 |
Family
ID=17343240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63260096A Expired - Lifetime JPH0636083B2 (en) | 1988-10-14 | 1988-10-14 | Fiber optic probe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0636083B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101138454B1 (en) * | 2010-05-31 | 2012-04-26 | (주)한빛레이저 | Laser system for output measurement and prevention of exit-hole damage and method of check normality. |
-
1988
- 1988-10-14 JP JP63260096A patent/JPH0636083B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101138454B1 (en) * | 2010-05-31 | 2012-04-26 | (주)한빛레이저 | Laser system for output measurement and prevention of exit-hole damage and method of check normality. |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0636083B2 (en) | 1994-05-11 |
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