JPH04295327A - Electronic endoscope - Google Patents
Electronic endoscopeInfo
- Publication number
- JPH04295327A JPH04295327A JP3059997A JP5999791A JPH04295327A JP H04295327 A JPH04295327 A JP H04295327A JP 3059997 A JP3059997 A JP 3059997A JP 5999791 A JP5999791 A JP 5999791A JP H04295327 A JPH04295327 A JP H04295327A
- Authority
- JP
- Japan
- Prior art keywords
- electronic endoscope
- filter
- laser
- optical system
- objective optical
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 230000002411 adverse Effects 0.000 abstract description 5
- 238000013532 laser treatment Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
- 229910052786 argon Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 238000002647 laser therapy Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明はレーザー治療を行うこと
ができる電子内視鏡に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic endoscope capable of performing laser therapy.
【０００２】0002
【従来の技術】従来、電子内視鏡のレーザー治療に於い
ては、ＹＡＧレーザーが使用されている。しかし、レー
ザー治療中では、ＹＡＧレーザー光の特定の波長域成分
が電子内視鏡で得られる画像に悪影響を与えるので、正
常な色調の画像を得ることができないという不具合があ
る。2. Description of the Related Art Conventionally, YAG lasers have been used in laser therapy for electronic endoscopes. However, during laser treatment, a specific wavelength range component of the YAG laser light has an adverse effect on the image obtained with the electronic endoscope, so there is a problem that it is impossible to obtain an image with a normal color tone.
【０００３】そこで、前記ＹＡＧレーザー光の特定の波
長域成分を反射させる反射膜を、電子内視鏡の先端硬質
部内に設けられた対物光学系のレンズにコーティングし
て前記不具合を解消している。[0003] Therefore, the above-mentioned problem has been solved by coating the lens of the objective optical system provided in the hard part of the tip of the electronic endoscope with a reflective film that reflects a specific wavelength range component of the YAG laser beam. .
【０００４】0004
【発明が解決しようとする課題】しかしながら、最近で
はＹＡＧレーザーの他にＫＴＰ、アルゴンレーザー等も
使用されてきており、これらのＫＴＰ、アルゴンレーザ
ーの各光の波長域はＹＡＧレーザー光の波長域とは異な
る。使用するレーザーに合わせて各レーザー光の特定の
波長域成分を反射する反射膜を対物光学系のレンズにコ
ーティングすることは不可能なので、各レーザーに対応
した専用の電子内視鏡を揃えなければならないという欠
点がある。[Problem to be solved by the invention] Recently, however, in addition to YAG lasers, KTP and argon lasers have also been used, and the wavelength range of each of these KTP and argon lasers is different from that of YAG laser light. is different. It is impossible to coat the lens of the objective optical system with a reflective film that reflects specific wavelength components of each laser beam depending on the laser being used, so it is necessary to have a dedicated electronic endoscope compatible with each laser. The disadvantage is that it does not.
【０００５】本発明は、このような事情に鑑みてなされ
たもので、１台の電子内視鏡で各種レーザーに対応する
ことができると共に、レーザー治療を行わない場合には
正常な色調の画像を得ることができる電子内視鏡を提供
することを目的とする。[0005] The present invention was made in view of the above circumstances, and allows a single electronic endoscope to be used with various types of lasers, and to provide images with normal color tone when laser treatment is not performed. The purpose is to provide an electronic endoscope that can obtain the following information.
【０００６】[0006]
【課題を解決する為の手段】本発明は、前記目的を達成
する為に、各種レーザー光に対応して特定の波長域成分
を取り除くフイルタ部材を予め複数枚備え、使用するレ
ーザー光に対応した前記フイルタ部材を選択して電子内
視鏡の先端硬質部の対物光学系の前面に着脱自在に取付
けたことを特徴とする。[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention is provided with a plurality of filter members that remove components in specific wavelength ranges corresponding to various laser beams, and filter members corresponding to the laser beams to be used. The present invention is characterized in that the filter member is selected and detachably attached to the front surface of the objective optical system of the rigid distal end portion of the electronic endoscope.
【０００７】[0007]
【作用】本発明によれば、使用するレーザーに対応した
フイルタ部材を選択し、そしてこのフイルタ部材を、電
子内視鏡の先端硬質部の対物光学系の前面に取付ける。
これにより、各種レーザーを使用する場合でも、１台の
電子内視鏡で対応することができる。According to the present invention, a filter member corresponding to the laser to be used is selected, and this filter member is attached to the front surface of the objective optical system of the rigid tip portion of the electronic endoscope. As a result, even when using various lasers, a single electronic endoscope can be used.
【０００８】[0008]
【実施例】以下添付図面に従って本発明に係る内視鏡の
湾曲部構造の好ましい実施例について詳説する。図１は
本発明に係る電子内視鏡１０の全体構成が示され、この
電子内視鏡１０は手元操作部１２に挿入部１４が連結さ
れている。この挿入部１４は、前記手元操作部１２への
連結部から所定の長さ分は硬性パイプ材からなる硬性部
１６で、この硬性部１６には湾曲部１８が連結される。
また、湾曲部１８には先端硬質部２０が連結される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the bending portion structure of an endoscope according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 shows the overall configuration of an electronic endoscope 10 according to the present invention, and this electronic endoscope 10 has an insertion section 14 connected to a hand operation section 12. The insertion portion 14 has a rigid portion 16 made of a hard pipe material for a predetermined length from the connecting portion to the hand operation portion 12, and a curved portion 18 is connected to the rigid portion 16. Further, a rigid tip portion 20 is connected to the curved portion 18 .
【０００９】前記先端硬質部２０は、図２に示すように
筒状本体２２内に対物光学系２４、が設けられ、また、
ライトガイド２６、及び鉗子チャンネル２８が前記手元
操作部１２から硬性部１６、湾曲部１８を介して筒状本
体２２内に配設されている。前記対物光学系２４は複数
の対物レンズによって構成されると共に鏡胴３０によっ
て筒状本体２２内に支持される。また、前記対物光学系
２４の前面、即ち光の入射方向側にはフイルタ３２が所
定の間隔をもって配置されている。As shown in FIG. 2, the rigid tip portion 20 is provided with an objective optical system 24 within a cylindrical body 22, and
A light guide 26 and a forceps channel 28 are disposed within the cylindrical main body 22 from the hand operation section 12 via the rigid section 16 and the curved section 18. The objective optical system 24 is composed of a plurality of objective lenses and is supported within the cylindrical body 22 by a lens barrel 30. Furthermore, filters 32 are arranged at predetermined intervals in front of the objective optical system 24, that is, on the side in the direction of light incidence.
【００１０】前記フイルタ３２は、カニメ穴３３が形成
された筒状のフイルタ枠３４に嵌め込まれている。この
フイルタ枠３４は、フイルタ３２の外側面３２ａが筒状
本体２２の端面２２ａと同一面上になるように、先端硬
質部２０の外側から筒状本体２２に着脱自在に螺合され
る。また、Ｏリング３６が対物光学系２４とフイルタ３
２との間の空間を気密保持する為に配設されている。The filter 32 is fitted into a cylindrical filter frame 34 in which a hooked hole 33 is formed. The filter frame 34 is removably screwed onto the cylindrical body 22 from the outside of the rigid tip portion 20 so that the outer surface 32a of the filter 32 is flush with the end surface 22a of the cylindrical body 22. Also, the O-ring 36 connects the objective optical system 24 and the filter 3.
It is arranged to keep the space between the two airtight.
【００１１】また、カットフイルタ３２は図３に示すよ
うに、ＫＴＰレーザー光の波長域成分のうち電子内視鏡
１０で得られる画像に悪影響を与える波長域成分、即ち
５００ｍμから５６５ｍμまでのグリーン領域の波長域
成分を反射する特性を有している。次に、前記の如く構
成された電子内視鏡の作用について説明する。Further, as shown in FIG. 3, the cut filter 32 cuts out the wavelength range components of the KTP laser beam that have an adverse effect on the image obtained by the electronic endoscope 10, that is, the green region from 500 mμ to 565 mμ. It has the characteristic of reflecting wavelength range components. Next, the operation of the electronic endoscope configured as described above will be explained.
【００１２】先ず、ＫＴＰレーザーを使用してレーザー
治療を行う場合、予めフイルタ３２を図２に示した位置
にフイルタ枠３４と共に先端硬質部２０の外側から対物
光学系２４の前面に取付ける。これによって、対物光学
系２４には、ＫＴＰレーザー光の波長域のうち電子内視
鏡１０で得られる画像に悪影響を与える波長域成分が反
射された光が入射する。従って、電子内視鏡１０は正常
な色調の画像を得ることができる。First, when performing laser treatment using a KTP laser, the filter 32 is attached in advance to the front surface of the objective optical system 24 from the outside of the rigid tip portion 20 together with the filter frame 34 at the position shown in FIG. As a result, light from which components of the wavelength range of the KTP laser light that adversely affect images obtained by the electronic endoscope 10 is reflected enters the objective optical system 24 . Therefore, the electronic endoscope 10 can obtain images with normal color tone.
【００１３】尚、フイルタ３２の取付け方は、前記フイ
ルタ枠３４に形成されたカニメ穴３３に図示しない治具
を差し込み、そしてこの治具をフイルタ枠３４の軸芯を
中心軸として回転させてフイルタ枠３４を先端硬質部２
０に螺合させる。これにより、フイルタ３２を対物光学
系２４の前面に容易に取付けることができる。また、Ｋ
ＴＰレーザーではなく他のレーザー、例えばＹＡＧ、ア
ルゴンレーザーを使用する場合には、ＹＡＧ、アルゴン
レーザーに対応したフイルタ、即ちＹＡＧ、アルゴンレ
ーザー光の特定の波長域成分のうち電子内視鏡１０で得
られる画像に悪影響を与える波長域成分を反射する特性
を有したフイルタを、前記フイルタ３２の代わりに対物
光学系２４の前面に取付ければ良い。これにより、レー
ザーの種類を変更しても、１台の電子内視鏡で対応する
ことができる。Note that the filter 32 is attached by inserting a jig (not shown) into the hooked hole 33 formed in the filter frame 34, and rotating this jig about the axis of the filter frame 34 as a central axis. The frame 34 is attached to the rigid tip portion 2
0. Thereby, the filter 32 can be easily attached to the front surface of the objective optical system 24. Also, K
When using another laser instead of the TP laser, such as a YAG or argon laser, a filter compatible with the YAG or argon laser, that is, a filter that can be used with the electronic endoscope 10 out of the specific wavelength range components of the YAG or argon laser light. Instead of the filter 32, a filter having a characteristic of reflecting wavelength components that adversely affect the displayed image may be attached to the front surface of the objective optical system 24. With this, even if the type of laser is changed, it can be handled with one electronic endoscope.
【００１４】レーザーを使用しない場合には、フイルタ
に代えて透明材を取り付けておくこともできる。[0014] When a laser is not used, a transparent material may be attached in place of the filter.
【００１５】[0015]
【発明の効果】以上説明したように、本発明に係る内視
鏡の湾曲部構造によれば、各種レーザー光に対応して特
定の波長域成分を取り除くフイルタ部材を予め複数備え
、使用するレーザー光に対応した前記フイルタ部材を選
択して電子内視鏡の先端硬質部の対物光学系の前面に着
脱自在に取付けたので、各種レーザーを使用する場合で
も１台の電子内視鏡で対応することができる。As explained above, according to the curved portion structure of an endoscope according to the present invention, a plurality of filter members for removing specific wavelength range components corresponding to various laser beams are provided in advance, and the laser beam to be used is The above-mentioned filter member compatible with light was selected and detachably attached to the front of the objective optical system of the rigid tip of the electronic endoscope, so even when using various lasers, one electronic endoscope can handle it. be able to.
【図１】内視鏡の実施例を示す全体図[Figure 1] Overall diagram showing an example of an endoscope
【図２】本発明に係る電子内視鏡の先端硬質部の実施例
を示す断面図FIG. 2 is a cross-sectional view showing an embodiment of the rigid distal end portion of the electronic endoscope according to the present invention.
【図３】ＫＴＰレーザーを使用した場合に於けるフイル
タの特性曲線を示す説明図[Figure 3] Explanatory diagram showing the filter characteristic curve when using a KTP laser
１０…電子内視鏡 ２０…先端硬質部 ２４…対物光学系 ３２…フイルタ ３４…フイルタ枠 ３６…Ｏリング 10...Electronic endoscope 20...Hard tip part 24...Objective optical system 32...Filter 34...Filter frame 36...O-ring
Claims (1)
域成分を取り除くフイルタ部材を予め複数枚備え、使用
するレーザー光に対応した前記フイルタ部材を選択して
電子内視鏡の先端硬質部の対物光学系の前面に着脱自在
に取付けたことを特徴とする電子内視鏡。1. A plurality of filter members are provided in advance to remove components in specific wavelength ranges corresponding to various laser beams, and the filter member corresponding to the laser beam to be used is selected to control the hard tip of the electronic endoscope. An electronic endoscope characterized by being detachably attached to the front of an objective optical system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3059997A JP3053024B2 (en) | 1991-03-25 | 1991-03-25 | Electronic endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3059997A JP3053024B2 (en) | 1991-03-25 | 1991-03-25 | Electronic endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04295327A true JPH04295327A (en) | 1992-10-20 |
| JP3053024B2 JP3053024B2 (en) | 2000-06-19 |
Family
ID=13129318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3059997A Expired - Lifetime JP3053024B2 (en) | 1991-03-25 | 1991-03-25 | Electronic endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3053024B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7521648B2 (en) * | 2003-03-26 | 2009-04-21 | Continental Automotive Systems Us, Inc. | Apparatus and method of maintaining a generally constant focusing spot size at different average laser power densities |
| US7878972B2 (en) | 2002-10-18 | 2011-02-01 | Gyrus Acmi, Inc. | Removable optical assembly for a medical instrument |
| US8692874B2 (en) | 2007-04-17 | 2014-04-08 | Gyrus Acmi, Inc. | Imaging systems and methods, particularly for use with medical instrument used in open surgery |
-
1991
- 1991-03-25 JP JP3059997A patent/JP3053024B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7878972B2 (en) | 2002-10-18 | 2011-02-01 | Gyrus Acmi, Inc. | Removable optical assembly for a medical instrument |
| US7521648B2 (en) * | 2003-03-26 | 2009-04-21 | Continental Automotive Systems Us, Inc. | Apparatus and method of maintaining a generally constant focusing spot size at different average laser power densities |
| US8692874B2 (en) | 2007-04-17 | 2014-04-08 | Gyrus Acmi, Inc. | Imaging systems and methods, particularly for use with medical instrument used in open surgery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3053024B2 (en) | 2000-06-19 |
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