JPH02203835A - Temperature measuring endoscope - Google Patents
Temperature measuring endoscopeInfo
- Publication number
- JPH02203835A JPH02203835A JP1022413A JP2241389A JPH02203835A JP H02203835 A JPH02203835 A JP H02203835A JP 1022413 A JP1022413 A JP 1022413A JP 2241389 A JP2241389 A JP 2241389A JP H02203835 A JPH02203835 A JP H02203835A
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- image
- subject
- visible
- infrared rays
- 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 30
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 7
- 238000003384 imaging method Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 abstract description 21
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 239000003086 colorant Substances 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 description 8
- 238000005286 illumination Methods 0.000 description 7
- 201000011510 cancer Diseases 0.000 description 6
- 206010028980 Neoplasm Diseases 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 2
- 239000005383 fluoride glass Substances 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910002319 LaF3 Inorganic materials 0.000 description 1
- 229910007998 ZrF4 Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910001632 barium fluoride Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000005387 chalcogenide glass Substances 0.000 description 1
- 150000004770 chalcogenides Chemical class 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- BYMUNNMMXKDFEZ-UHFFFAOYSA-K trifluorolanthanum Chemical compound F[La](F)F BYMUNNMMXKDFEZ-UHFFFAOYSA-K 0.000 description 1
- OMQSJNWFFJOIMO-UHFFFAOYSA-J zirconium tetrafluoride Chemical compound F[Zr](F)(F)F OMQSJNWFFJOIMO-UHFFFAOYSA-J 0.000 description 1
Landscapes
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Endoscopes (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、被写体の観察と同時に被写体の温度分布を
測定することができるようにしだ測温内視鏡に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a thermometer endoscope capable of measuring the temperature distribution of a subject at the same time as observing the subject.
医療用に用いられる内視鏡は、癌の発見などを行うため
に広く用いられているが、早期癌や粘膜下の悪性腫瘍な
どを肉眼で発見するのは極めて困難である。しかし、癌
細胞などの異常細胞は正常な細胞より１℃程度温度が高
いので、内視鏡を利用して体腔粘膜の温度分布を測定す
ることによって、早期癌等を発見する試みがなされてい
る。Endoscopes used for medical purposes are widely used to detect cancer, etc., but it is extremely difficult to detect early cancer or submucosal malignant tumors with the naked eye. However, since abnormal cells such as cancer cells have a temperature about 1°C higher than normal cells, attempts are being made to detect early cancers by measuring the temperature distribution of body cavity mucous membranes using endoscopes. .
上述のような目的に用いられる測温内視鏡として従来は
、内視鏡の鉗子チャンネルに測温プローブを挿通し、体
腔粘膜面にプローブの先端を直接押しつけて、粘膜面の
温度を測定するものがあった。Conventionally, temperature measurement endoscopes used for the above purposes measure the temperature of the mucosal surface by inserting a temperature measurement probe into the forceps channel of the endoscope and pressing the tip of the probe directly against the mucosal surface of the body cavity. There was something.
しかし、そのようなものは、−回に一点の温度しか測定
できないので、温度分布を測定するには膨大な手間がか
かり、人の体腔内に内視鏡を挿入した状態で粘膜の温度
分布を測定するのは、事実上不可能に近かった。However, such devices can only measure the temperature at one point per time, so it takes a huge amount of time and effort to measure the temperature distribution. It was virtually impossible to measure.
そこで、例えば第６図に示されるように、被写体の赤外
像を結像して伝達するための赤外像用の光学系５０を、
内視鏡に組込んだものがあった。Therefore, as shown in FIG. 6, for example, an infrared image optical system 50 for forming and transmitting an infrared image of a subject is installed.
There was one built into an endoscope.
５１は、赤外線を透過するシリコンなどの材料で作られ
た赤外像用対物レンズ。５２は、赤外線を透過するフッ
化物ガラス材料などで作られた赤外像伝達ファイババン
ドル。５３は、可視光用の対物レンズ。５４は、可視光
用の像伝達ファイババンドル。５５は、照明用ライトガ
イドファイババンドルである。51 is an infrared image objective lens made of a material such as silicon that transmits infrared rays. 52 is an infrared image transmission fiber bundle made of a fluoride glass material that transmits infrared rays. 53 is an objective lens for visible light. 54 is an image transmission fiber bundle for visible light. 55 is a light guide fiber bundle for illumination.
しかし、上述のように、単に赤外像用光学系５０を内視
鏡に組み込んだものでは、第６図に示されるように観察
視野範囲Ａと赤外像の範囲Ｂとにずれが生じる。そのた
め、赤外像、即ち温度分布の像が体腔内のどの位置から
得られたものなのか、その位置を正確に把握することが
できず、正確な判断を行うことができなかった。However, as described above, if the infrared image optical system 50 is simply incorporated into an endoscope, a deviation occurs between the observation visual field range A and the infrared image range B, as shown in FIG. Therefore, it has not been possible to accurately grasp the position in the body cavity from which the infrared image, that is, the image of temperature distribution was obtained, and it has been impossible to make accurate judgments.
この発明は、そのような従来の欠点を解消し、赤外像に
よって得られる温度分布の位置を、可視の観察像と対応
をつけて、正確に把握することができる測温内視鏡を提
供することを目的とする。The present invention eliminates such conventional drawbacks and provides a temperature measuring endoscope that can accurately grasp the position of temperature distribution obtained by infrared images by correlating with visible observation images. The purpose is to
上記の目的を達成するため、本発明の測温内視鏡は、内
視鏡の挿入部の先端に設けられて、被写体の可視像を結
像する観察用対物光学系と、上記観察用対物光学系によ
って結像した被写体の可視像を上記挿入部の外部に伝達
する可視像伝達手段と、上記可視像伝達手段によって伝
達された被写体の可視像を観察するための可視像観察手
段と、上記観察用対物光学系の光路上に設けられ、可視
光と赤外線の一方を透過し他方を反射して赤外線を分離
する赤外線分離手段と、上記赤外線分離手段によって分
離された被写体の赤外像を結像する赤外像結像手段と、
上記赤外像結像手段によって結像した被写体の赤外像を
上記挿入部の外部に伝達する赤外像伝達手段と、上記赤
外像伝達手段によって伝達された被写体の赤外像を可視
的に変換して表示する赤外像表示手段とを具備すること
を特徴とする。In order to achieve the above object, the temperature measuring endoscope of the present invention includes an observation objective optical system that is provided at the tip of the insertion section of the endoscope and forms a visible image of a subject, and an observation objective optical system that forms a visible image of a subject. a visible image transmitting means for transmitting a visible image of the subject formed by the objective optical system to the outside of the insertion section; and a visible image transmitting means for observing the visible image of the subject transmitted by the visible image transmitting means. an image observation means; an infrared separation means provided on the optical path of the objective optical system for observation and transmits one of visible light and infrared rays and reflects the other to separate infrared rays; and an object separated by the infrared separation means. an infrared image forming means for forming an infrared image of the
an infrared image transmitting means for transmitting an infrared image of a subject formed by the infrared image forming means to the outside of the insertion section; and an infrared image display means for converting and displaying the image.
観察用対物光学系の光路上に設けられた赤外線分離手段
によって分離された被写体の赤外線が、赤外線表示手段
によって、可視的に変換されて観察される。この赤外像
から被写体の温度分布を知ることができ、そして、この
赤外像と同一部位の可視像を、可視像観察手段によって
同時に観察することができる。The infrared rays of the object separated by the infrared separation means provided on the optical path of the observation objective optical system are converted into visible light and observed by the infrared display means. The temperature distribution of the subject can be known from this infrared image, and this infrared image and a visible image of the same area can be observed simultaneously using visible image observation means.
図面を参照して実施例を説明する。 Examples will be described with reference to the drawings.
第１図において、■は内視鏡であり、その挿入部２の先
端には、被写体３０の可視像を結像する観察用対物光学
系３が内蔵されている。そして、被写体の可視像を挿入
部２外に伝達する可視像伝達手段であるイメージガイド
ファイババンドル４が、挿入部２内を通って、挿入部２
外に設けられた接眼部６に至るように配置されている。In FIG. 1, ▪ is an endoscope, and an observation objective optical system 3 for forming a visible image of a subject 30 is built into the distal end of an insertion portion 2 thereof. Then, an image guide fiber bundle 4, which is a visible image transmission means for transmitting a visible image of the subject to the outside of the insertion section 2, passes through the insertion section 2 and passes through the insertion section 2.
It is arranged so as to reach an eyepiece section 6 provided outside.
イメージガイドファイババンドル４の像入射端面ば、観
察用対物光学系３の結像位置に配置され、像出射端面は
、接眼光学系６ａの観察位置に配置されている。なお、
可視像伝達手段としては、イメージガイドファイババン
ドル４に代えて、電荷結合素子（ＣＯＤ）その他の固体
撮像素子などを用いてもよい。The image input end face of the image guide fiber bundle 4 is arranged at the image formation position of the observation objective optical system 3, and the image output end face is arranged at the observation position of the eyepiece optical system 6a. In addition,
As the visible image transmission means, a charge coupled device (COD) or other solid-state imaging device may be used instead of the image guide fiber bundle 4.
８は、観察対象となる被写体３０を照明する照明用ライ
トガイドファイババンドル。９は、照明用ライトガイド
ファイババンドル８に照明光を入射する光源である。こ
の光源９と照明用ライトガイドファイババンドル８との
間の照明光路中には、赤外線をカットする赤外線カット
フィルタ１ｏ及び赤外線カット反射鏡１１などが設けら
れて、被写体３０を照明する照明光に含まれる赤外線を
大幅に減らしている。8 is a light guide fiber bundle for illumination that illuminates the subject 30 to be observed. Reference numeral 9 denotes a light source that inputs illumination light into the illumination light guide fiber bundle 8. In the illumination optical path between the light source 9 and the illumination light guide fiber bundle 8, an infrared cut filter 1o that cuts infrared rays, an infrared cut reflector 11, etc. are provided, and the infrared rays that are included in the illumination light that illuminates the subject 30 are provided. This greatly reduces the amount of infrared rays emitted.
１３は、可視光を透過し、波長が２μｍ以上の赤外線は
反射する波長選択ミラー（赤外線分離手段）である。こ
の波長選択ミラー１３は平面鏡であり、観察用対物光学
系３の光路上に配置されて、赤外線だけを、例えば直角
に側方に反射するものである。波長選択ミラー１３で反
射された赤外線は、さらに赤外線反射ミラー１４で反射
される。13 is a wavelength selection mirror (infrared separation means) that transmits visible light and reflects infrared rays having a wavelength of 2 μm or more. This wavelength selection mirror 13 is a plane mirror, and is disposed on the optical path of the observation objective optical system 3 to reflect only infrared rays, for example, at right angles to the sides. The infrared rays reflected by the wavelength selection mirror 13 are further reflected by the infrared reflecting mirror 14.
そして、シリコン又はゲルマニウムなどの赤外線透過材
料で作られた赤外像結像レンズ１５によって被写体の赤
外像が結像される。本実施例においては、この赤外像と
上述の可視像とは、光軸が一致し、視野角も一致してい
る。Then, an infrared image of the subject is formed by an infrared image forming lens 15 made of an infrared transmitting material such as silicon or germanium. In this embodiment, this infrared image and the above-mentioned visible image have the same optical axis and the same viewing angle.
赤外像の結像位置には、赤外線透過材料であるフッ化物
ガラス又はカルコゲナイドガラスなどで作られた赤外像
伝達ファイババンドル１６の（赤外像伝達手段）の入射
端面が配置されている。At the imaging position of the infrared image, the incident end face of the infrared image transmitting fiber bundle 16 (infrared image transmitting means) made of an infrared transmitting material such as fluoride glass or chalcogenide glass is arranged.
フッ化物ファイバとしては、例えば
ＺｒＦ４： ５７ｍｏ１％ ＢａＦ２： ３４ｍｏ１％
ＬａＦ３： ５ｍｏｌＸ ＡｌＦ３： ４ｍｏｌ
！％の組成のものなどがある。As the fluoride fiber, for example, ZrF4: 57mo1% BaF2: 34mo1%
LaF3: 5molX AlF3: 4mol
! % composition.
また、カルコゲナイドファイバとしては、コア： Ｇｅ
２ｓＡＳ２ｏＳｅｚｓＴ［！３゜クラッド： Ｇｅ２ｏ
ＡＳ３ｏＳｅ３ｏＴｅ２゜のものなどがある。In addition, as a chalcogenide fiber, core: Ge
2sAS2oSezsT[! 3゜Clad: Ge2o
There are those of AS3oSe3oTe2°.
赤外像伝達ファイババンドル１６は、例えばコアの直径
が７０μｍ１クラツドの直径が１４０μｍの単ファイバ
を３０００本程度規則的に配列したものであり、その断
面は約７Ｘ７ｍｍ２である。The infrared image transmitting fiber bundle 16 is, for example, a regularly arranged array of about 3000 single fibers each having a core diameter of 70 μm and a cladding diameter of 140 μm, and its cross section is approximately 7×7 mm 2 .
なお赤外像伝達ファイババンドル１６に代えて、赤外線
感知用の固体撮像素子などを用いてもよい。Note that in place of the infrared image transmission fiber bundle 16, a solid-state imaging device for infrared sensing or the like may be used.
赤外像伝達ファイババンドル１６は、挿入部２内からそ
の外部の連結管１７内を通って、出射端部１６ａはサー
モビジョン２０に接続されている。The infrared image transmission fiber bundle 16 passes from inside the insertion section 2 into a connecting tube 17 outside thereof, and the output end 16a is connected to the thermovision 20.
２１は、サーモビジョン２０に入る赤外線を拡大する拡
大レンズであり、シリコン、ゲルマニウム等の赤外線透
過材料で作られている。２２は、入射した赤外像を電気
信号に変換する赤外線カメラ。21 is a magnifying lens that magnifies infrared rays entering the thermovision 20, and is made of an infrared transparent material such as silicon or germanium. 22 is an infrared camera that converts an incident infrared image into an electrical signal.
２３は、赤外線カメラ２２からの信号を、可視的な色の
変化を示す信号に変換する変換ユニットであり、ＣＲＴ
などのデイスプレィ２４上に、被写体３０の赤外像、即
ち温度分布が色の相違として可視的に表示される。23 is a conversion unit that converts the signal from the infrared camera 22 into a signal indicating a visible color change;
An infrared image of the subject 30, that is, a temperature distribution, is visually displayed as a difference in color on a display 24 such as the above.
このようにして、接眼部６を通して肉眼で観察される可
視像の視野範囲と同範囲の被写体の温度分布が、デイス
プレィ２４に表示される。In this way, the temperature distribution of the subject in the same range as the visual field of the visible image observed with the naked eye through the eyepiece 6 is displayed on the display 24.
なお、可視像の観察範囲と赤外像の観察範囲とは完全に
一致することが最も望ましい。しかし、光学系のレイア
ウト上、完全な一致を求めることは困難であることが少
なくない。また、可視像の観察範囲はできるだけ広角で
あることが望ましい。Note that it is most desirable that the visible image observation range and the infrared image observation range completely match. However, it is often difficult to obtain perfect coincidence due to the layout of the optical system. Further, it is desirable that the viewing range of the visible image be as wide as possible.
したがって、例えば、第２図に示されるように、可視像
の観察範囲Ｅに対して赤外像の範囲Ｆを狭くしてもよく
、その場合には第３図に示されるように、接眼光学系６
ａの観察視野ｅ中に、赤外像の範囲ｆを示す補助ライン
２６などを設けるとよい。また、使用目的などによって
は、これとは逆に、赤外像の範囲を可視像の観察視野よ
り広角にして、デイスプレィ２４上に観察視野の範囲が
表示されるようにしてもよい。Therefore, for example, as shown in FIG. 2, the range F of the infrared image may be narrower than the observation range E of the visible image, and in that case, as shown in FIG. Optical system 6
It is preferable to provide an auxiliary line 26 or the like indicating the range f of the infrared image in the observation field e of a. Further, depending on the purpose of use, on the contrary, the range of the infrared image may be made wider than the observation field of view of the visible image, and the range of the observation field of view may be displayed on the display 24.
また、可視像の観察範囲と赤外像とでは観察中心軸が一
致するのが望ましいが、これも必ずしも一致させる必要
はなく、第４図に示されるように光軸が相対的に傾いて
もよい。その場合には、第５図に示されるように、赤外
像の範囲を示す補助ライン２７をずらして設けるか、接
眼光学系６ａの観察視野又はデイスプレィ２４の少なく
とモー方に、相手の光学中心軸を示すマークなどを表示
するとよい。Furthermore, although it is desirable that the observation range of the visible image and the infrared image coincide, it is not necessary that the central axes of the observation coincide with each other. Good too. In that case, as shown in FIG. 5, the auxiliary line 27 indicating the range of the infrared image should be shifted, or the observation field of the eyepiece optical system 6a or the display 24 should be placed at least in the direction of the optical field of the other party. It is a good idea to display a mark indicating the central axis.
なお、上記実施例においては、いわゆる前方視型の内視
鏡を例に上げて説明したが、側視型あるいは斜視型の内
視鏡などであってもさしつかえない。In the above embodiments, a so-called forward-viewing endoscope was used as an example, but a side-viewing or oblique-viewing endoscope may also be used.
また、上記実施例においては、赤外線分離手段である波
長選択ミラーが可視光を透過し赤外線は反射するように
したか、それと逆に、可視光を反射し赤外線を透過する
波長選択ミラーを設けてもよい。その場合には、第１図
におけるイメージガイドファイババンドル４と赤外像伝
達ファイババンドル１６の配置が逆になる。Furthermore, in the above embodiments, the wavelength selection mirror serving as the infrared separation means transmits visible light and reflects infrared light, or conversely, a wavelength selection mirror that reflects visible light and transmits infrared light is provided. Good too. In that case, the arrangement of the image guide fiber bundle 4 and the infrared image transmission fiber bundle 16 in FIG. 1 is reversed.
この発明の測温内視鏡によれば、同一部位の可視像と赤
外像とを同時に観察して、その赤外像から被写体の温度
分布を知ることができる。したがって、被写体の温度分
布の位置を可視の観察像によって正確に把握することが
でき、肉眼では発見困難な早期癌細胞や粘膜下の悪性腫
瘍などを的確に発見することができる優れた効果を有す
る。According to the temperature measurement endoscope of the present invention, a visible image and an infrared image of the same region can be observed simultaneously, and the temperature distribution of the subject can be determined from the infrared image. Therefore, the position of the temperature distribution of the subject can be accurately grasped from the visible observation image, and it has an excellent effect of accurately discovering early cancer cells and submucosal malignant tumors that are difficult to detect with the naked eye. .
図である。It is a diagram.
■・・・内視鏡、２・・・挿入部、３・・・観察用対物
光学系、４・・・イメージガイドファイババンドル、６
・・・接眼部、６ａ・・・接眼光学系、１３・・・波長
選択ミラー、１４・・・赤外線反射ミラー、１５・・−
赤外像結像レンズ、１６・・・赤外像伝達ファイババン
ドル、２０・−サーモビジョン、２４・・・デイスプレ
ィ、３０・−・被写体。■... Endoscope, 2... Insertion section, 3... Observation objective optical system, 4... Image guide fiber bundle, 6
... Eyepiece section, 6a... Eyepiece optical system, 13... Wavelength selection mirror, 14... Infrared reflecting mirror, 15... -
Infrared image forming lens, 16... Infrared image transmission fiber bundle, 20... Thermovision, 24... Display, 30... Subject.
Claims (1)
結像する観察用対物光学系と、 上記観察用対物光学系によって結像した被写体の可視像
を上記挿入部の外部に伝達する可視像伝達手段と、 上記可視像伝達手段によって伝達された被写体の可視像
を観察するための可視像観察手段と、上記観察用対物光
学系の光路上に設けられ、可視光と赤外線の一方を透過
し他方を反射して赤外線を分離する赤外線分離手段と、 上記赤外線分離手段によって分離された被写体の赤外像
を結像する赤外像結像手段と、 上記赤外像結像手段によって結像した被写体の赤外像を
上記挿入部の外部に伝達する赤外像伝達手段と、 上記赤外像伝達手段によって伝達された被写体の赤外像
を可視的に変換して表示する赤外像表示手段 とを具備することを特徴とする測温内視鏡。[Scope of Claims] An observation objective optical system provided at the tip of the insertion section of an endoscope to form a visible image of a subject; and a visible image of the subject formed by the observation objective optical system. visible image transmitting means for transmitting the visible image of the subject to the outside of the insertion section, visible image observing means for observing the visible image of the subject transmitted by the visible image transmitting means, and the objective optical system for observation. an infrared separation means provided on the optical path, which transmits one of visible light and infrared rays and reflects the other to separate the infrared rays; and an infrared image forming means, which forms an infrared image of the subject separated by the infrared separation means. an imaging means; an infrared image transmitting means for transmitting an infrared image of the subject formed by the infrared image forming means to the outside of the insertion section; and an infrared ray of the subject transmitted by the infrared image transmitting means. A temperature measuring endoscope comprising an infrared image display means for visually converting and displaying an image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1022413A JPH02203835A (en) | 1989-01-31 | 1989-01-31 | Temperature measuring endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1022413A JPH02203835A (en) | 1989-01-31 | 1989-01-31 | Temperature measuring endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02203835A true JPH02203835A (en) | 1990-08-13 |
| JPH0356048B2 JPH0356048B2 (en) | 1991-08-27 |
Family
ID=12081981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1022413A Granted JPH02203835A (en) | 1989-01-31 | 1989-01-31 | Temperature measuring endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02203835A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05237323A (en) * | 1992-02-25 | 1993-09-17 | Iseki & Co Ltd | Dust collector for grain drying and preparation facilities |
| JPH062205U (en) * | 1992-06-04 | 1994-01-14 | 旭光学工業株式会社 | Temperature measuring endoscope |
| US10653874B2 (en) | 2010-05-12 | 2020-05-19 | Circa Scientific, Inc. | Apparatus for manually manipulating hollow organs |
| US10806348B2 (en) | 2008-03-18 | 2020-10-20 | Circa Scientific, Inc. | Methods, apparatus and systems for facilitating introduction of shaped medical instruments into the body of a subject |
| US11357408B2 (en) | 2008-03-18 | 2022-06-14 | Circa Scientific, Inc. | Large surface area temperature sensing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5969050A (en) * | 1982-10-15 | 1984-04-19 | オリンパス光学工業株式会社 | Through-endoscope thermography apparatus |
| JPS63160632A (en) * | 1986-12-24 | 1988-07-04 | 株式会社東芝 | Endoscopic diagnostic apparatus |
-
1989
- 1989-01-31 JP JP1022413A patent/JPH02203835A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5969050A (en) * | 1982-10-15 | 1984-04-19 | オリンパス光学工業株式会社 | Through-endoscope thermography apparatus |
| JPS63160632A (en) * | 1986-12-24 | 1988-07-04 | 株式会社東芝 | Endoscopic diagnostic apparatus |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05237323A (en) * | 1992-02-25 | 1993-09-17 | Iseki & Co Ltd | Dust collector for grain drying and preparation facilities |
| JPH062205U (en) * | 1992-06-04 | 1994-01-14 | 旭光学工業株式会社 | Temperature measuring endoscope |
| US10806348B2 (en) | 2008-03-18 | 2020-10-20 | Circa Scientific, Inc. | Methods, apparatus and systems for facilitating introduction of shaped medical instruments into the body of a subject |
| US11357408B2 (en) | 2008-03-18 | 2022-06-14 | Circa Scientific, Inc. | Large surface area temperature sensing device |
| US11896348B2 (en) | 2008-03-18 | 2024-02-13 | Circa Scientific, Inc. | Large surface area temperature sensing device |
| US10653874B2 (en) | 2010-05-12 | 2020-05-19 | Circa Scientific, Inc. | Apparatus for manually manipulating hollow organs |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0356048B2 (en) | 1991-08-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |