JPS63242278A - Hyperthermia apparatus - Google Patents
Hyperthermia apparatusInfo
- Publication number
- JPS63242278A JPS63242278A JP7902487A JP7902487A JPS63242278A JP S63242278 A JPS63242278 A JP S63242278A JP 7902487 A JP7902487 A JP 7902487A JP 7902487 A JP7902487 A JP 7902487A JP S63242278 A JPS63242278 A JP S63242278A
- Authority
- JP
- Japan
- Prior art keywords
- wavelength
- helical antenna
- body cavity
- helical
- applicator
- 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.)
- Pending
Links
- 206010020843 Hyperthermia Diseases 0.000 title claims description 7
- 230000036031 hyperthermia Effects 0.000 title claims description 7
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 239000003989 dielectric material Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 9
- 230000005670 electromagnetic radiation Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 2
- 201000011510 cancer Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 208000009565 Pharyngeal Neoplasms Diseases 0.000 description 1
- 206010034811 Pharyngeal cancer Diseases 0.000 description 1
- 208000002495 Uterine Neoplasms Diseases 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 206010046766 uterine cancer Diseases 0.000 description 1
- 210000004291 uterus Anatomy 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
この発明は、癌などの温熱治療を行うハイパーサーミア
装置に関し、特に、体腔内挿入用アプリケータに関する
。The present invention relates to a hyperthermia device for thermal treatment of cancer, etc., and particularly to an applicator for insertion into a body cavity.
咽頭癌や子宮癌などをハイパーサーミア治療する場合、
喉や子宮等の体腔内部に加温用アプリケータを挿入して
、病巣組織のごく近傍から加温することが有効である。
そのための、体腔挿入用アプリケータとして、マイクロ
波照射用ヘリカルアンテナを用いたちのく特開昭６０−
２４６７７２号公報）や同軸ケーブルの外部導体にヘリ
カル状のスリットを設けたもの（実公昭６１−３３９６
１号公報）等が従来より開発されている。When treating pharyngeal cancer, uterine cancer, etc. with hyperthermia,
It is effective to insert a heating applicator into a body cavity such as the throat or uterus to heat the diseased tissue from close to it. For this purpose, a helical antenna for microwave irradiation was used as an applicator for insertion into body cavities.
246772) and coaxial cables with helical slits in the outer conductor (Utility Model Publication No. 61-3396).
No. 1 Publication) etc. have been developed in the past.
しかし、従来の体腔挿入用アプリケータは何れも軸に垂
直な方向く軸の周辺方向）にのみ電磁波を放射し、それ
が軸方向に一様になるようなマイクロ波放射パターンを
有しており、軸方向側（先端側）にはほとんどマイクロ
波を放射しない。そのため、適用部位が限定されるとい
う問題があった。
この発明は、マイクロ波放射パターンを選択できるよう
に改善し、適用範囲を広げるようにした、体腔挿入用ア
プリケータを有するハイパーサーミア装置を提供するこ
とを目的とする。However, all conventional applicators for body cavity insertion emit electromagnetic waves only in the direction perpendicular to the axis (in the direction perpendicular to the axis and in the peripheral direction of the axis), and have a microwave radiation pattern that is uniform in the axial direction. , almost no microwave is emitted on the axial side (tip side). Therefore, there was a problem that the application sites were limited. An object of the present invention is to provide a hyperthermia device having an applicator for insertion into a body cavity, which has an improved ability to select a microwave radiation pattern and a wider range of application.
この発明によるハイパーサーミア装置は、マイクロ波照
射用のヘリカルアンテナと、これを包むように配置され
る容器と、該容器内に誘電率の異なる誘電体を名訳的に
送り込む装置とから構成される体腔挿入用アプリケータ
を有する。The hyperthermia device according to the present invention consists of a helical antenna for microwave irradiation, a container arranged to enclose the antenna, and a device for feeding a dielectric material with a different permittivity into the container. It has an applicator for
ヘリカルアンテナの放射指向性は、軸モードでは軸に平
行な方向に、垂直モードでは軸に垂直な方向になるが、
これらは、ヘリカルアンテナの寸法（ヘリカル周、ピッ
チ）及び使用波長に依存する。ヘリカルアンテナの寸法
を随時変えるのは困難であり、また、使用波長を変える
ことも整合器の交換を伴うので簡単にはいかない。
そこで、この発明では、ヘリカルアンテナの周囲に充填
される誘電体の誘電率を変えることで、等測的に波長を
変え、軸モードと垂直モードとを２択するようにしてい
る。The radiation directivity of a helical antenna is parallel to the axis in axial mode, and perpendicular to the axis in vertical mode.
These depend on the dimensions of the helical antenna (helical circumference, pitch) and the wavelength used. It is difficult to change the dimensions of a helical antenna at any time, and changing the wavelength used also involves replacing the matching box, which is not easy. Therefore, in the present invention, by changing the dielectric constant of the dielectric material filled around the helical antenna, the wavelength is changed isometrically, and two choices are made between the axial mode and the vertical mode.
第１図に示すこの発明の一実施例では、マイクロ波電力
供給用の同軸ケーブル１が１７４波長整合器２を・介し
てヘリカルアンテナ３に結合されている。このヘリカル
アンテナ３の周囲には液体４が充填される。容器５はこ
の液体４を入れるためのもので、形状を保持するために
ある程度の硬度を有するとともに、体腔内の表面組織に
接触するためにある程度の柔らかさを有している。この
液体４はポンプ６によりタンク８．ｔたは９より循環さ
せられる。タンク８．９にはそれぞれ誘電率の異なる液
体、たとえば、シリコンオイル、脱イオン水が貯蔵され
ており、切換バルブ７を切り換えることにより、何れか
の液体が送られるようになっている。
ここで、一般にヘリカルアンテナは、そのＲｔＴａ的構
造土構造定されるヘリカル周とヘリカルピッチ、及び使
用波長によって電磁波放射指向性のモードが定まる。す
なわち、このヘリカルアンテナ３のヘリカル直径をＤと
し、そのピッチをＰとし、使用波長をλとすると、
（πＤ／λ）＝１．０． （Ｐ／λ）−０，３の場合
、電磁波放射指向性は第２図Ａに示すような軸モードと
なり、
（πＤ／λ）＝０．２． （Ｐ／λ）＝０．０６で第
２図Ｂのような垂直モードとなる。
そのため、電磁波放射パターンを変えようとするなら、
寸法の異なるヘリカルアンテナに交換するか、使用波長
を変えるかする必要がある。ところが、前者は、このア
プリゲータを実際に体腔に挿入しているときに行うこと
ができず、また後者の場合も軸モードに対して垂直モー
ドは波長を５培にしなければならないので、１７４波長
整合器２を交換する必要があって、これも随時行い得な
い。
そこで、ここでは、周囲の液体４の誘電率を変えること
により波長を変えたと同じ効果を得る。つまり、比誘電
率εの誘電体中の波長は、真空中の波長＾０に比べて１
、、’ ｒτになることを利用し、ε洪７５の脱イオ
ン水では波長がλ（）／Ｊニとなり、軸モードとなると
き、ε嬌３のシリコンオイルでは波長がλｏ／ｒ丁とな
って、この波長は脱イオン水の場合の５倍であるから、
垂直モードが実現できる。
このように、切換バルブ７の切換により誘電率の異なる
液体を選ぶことによって、単一周波数、同一構造のヘリ
カルアンテナ３で、電磁波放射パターンを変えることが
できる。さらに、この液体４は循環させられるため、体
腔内の表面組繊を冷却し、表面での過熱を防止できる。In one embodiment of the invention shown in FIG. 1, a coaxial cable 1 for supplying microwave power is coupled to a helical antenna 3 via a 174 wavelength matcher 2. A liquid 4 is filled around this helical antenna 3. The container 5 is for containing this liquid 4, and has a certain degree of hardness to maintain its shape and a certain degree of softness to come into contact with the surface tissue within the body cavity. This liquid 4 is pumped into a tank 8 by a pump 6. It is circulated from t or 9. The tanks 8 and 9 store liquids having different dielectric constants, such as silicone oil and deionized water, and by switching the switching valve 7, either liquid can be sent. Generally, in a helical antenna, the mode of electromagnetic radiation directivity is determined by the helical circumference and helical pitch determined by its RtTa-like structure, and the wavelength used. That is, if the helical diameter of this helical antenna 3 is D, its pitch is P, and the wavelength used is λ, (πD/λ)=1.0. In the case of (P/λ)-0.3, the electromagnetic radiation directivity becomes an axial mode as shown in FIG. 2A, and (πD/λ)=0.2. When (P/λ)=0.06, a vertical mode as shown in FIG. 2B is obtained. Therefore, if you want to change the electromagnetic radiation pattern,
It is necessary to replace it with a helical antenna of different dimensions or change the wavelength used. However, the former cannot be performed while the applicator is actually inserted into the body cavity, and in the latter case, the wavelength of the vertical mode must be multiplied by 5 compared to the axial mode, so 174 wavelength matching is required. It is necessary to replace the container 2, and this cannot be done at any time. Therefore, here, by changing the dielectric constant of the surrounding liquid 4, the same effect as changing the wavelength can be obtained. In other words, the wavelength in a dielectric material with relative permittivity ε is 1 compared to the wavelength ^0 in vacuum.
,,' Utilizing the fact that rτ, in deionized water of ε Hong 75, the wavelength becomes λ()/Jd, and when it becomes an axial mode, in silicone oil of ε嬌3, the wavelength becomes λo/rd. Since this wavelength is five times that of deionized water,
Vertical mode can be achieved. In this way, by selecting liquids with different dielectric constants by switching the switching valve 7, it is possible to change the electromagnetic wave radiation pattern with the helical antenna 3 having a single frequency and the same structure. Furthermore, since this liquid 4 is circulated, it is possible to cool the surface fibers in the body cavity and prevent overheating on the surface.
この発明のハイパーサーミア装置の体腔挿入用アプリケ
ータによれば、電磁波放射パターンを随時容易に制御で
きるため、体腔近傍の癌組織治療を行う場合に種々の形
態の病巣に対応でき、適用範囲が広がる。According to the applicator for insertion into a body cavity of a hyperthermia device of the present invention, since the electromagnetic radiation pattern can be easily controlled at any time, it can be applied to various types of lesions when treating cancer tissue near the body cavity, and the range of application is expanded.
第１図はこの発明の一実施例のブロック図、第２図Ａ、
Ｂは電磁波放射指向性をそれぞれ示す図である。
１・・・同軸ケーブル、２・・・整合器、３・・・ヘリ
カルアンテナ、４・・・液体、５・・・容器、６・・・
ポンプ、７・・・切換バルブ、８．９・・・タンク。FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2A,
B is a diagram showing the electromagnetic radiation directivity. 1... Coaxial cable, 2... Matching box, 3... Helical antenna, 4... Liquid, 5... Container, 6...
Pump, 7...Switching valve, 8.9...Tank.
Claims (1)
包むように配置される容器と、該容器内に誘電率の異な
る誘電体を選択的に送り込む装置とから構成される体腔
挿入用アプリケータを有するハイパーサーミア装置。(1) It has an applicator for insertion into a body cavity, which is composed of a helical antenna for microwave irradiation, a container arranged to enclose the antenna, and a device for selectively feeding a dielectric material with a different permittivity into the container. Hyperthermia device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7902487A JPS63242278A (en) | 1987-03-31 | 1987-03-31 | Hyperthermia apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7902487A JPS63242278A (en) | 1987-03-31 | 1987-03-31 | Hyperthermia apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63242278A true JPS63242278A (en) | 1988-10-07 |
Family
ID=13678371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7902487A Pending JPS63242278A (en) | 1987-03-31 | 1987-03-31 | Hyperthermia apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63242278A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02127804A (en) * | 1988-11-08 | 1990-05-16 | Nippon Telegr & Teleph Corp <Ntt> | Helical antenna |
-
1987
- 1987-03-31 JP JP7902487A patent/JPS63242278A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02127804A (en) * | 1988-11-08 | 1990-05-16 | Nippon Telegr & Teleph Corp <Ntt> | Helical antenna |
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