JPS62152474A - Magnetic implant heating apparatus - Google Patents
Magnetic implant heating apparatusInfo
- Publication number
- JPS62152474A JPS62152474A JP29210585A JP29210585A JPS62152474A JP S62152474 A JPS62152474 A JP S62152474A JP 29210585 A JP29210585 A JP 29210585A JP 29210585 A JP29210585 A JP 29210585A JP S62152474 A JPS62152474 A JP S62152474A
- Authority
- JP
- Japan
- Prior art keywords
- heating
- magnetic
- temperature
- affected area
- electric field
- 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
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- Electrotherapy Devices (AREA)
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
【発明の詳細な説明】
［産業上の利用分野１
本発明はマグネティックインプラント加温装置、特に生
体内に磁性材を埋め込んで癌などの温熱治療を行うマグ
ネティックインプラント加温装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to a magnetic implant heating device, and particularly to a magnetic implant heating device for implanting a magnetic material into a living body and performing thermal treatment for cancer or the like.
［従来の技術］
癌組織を４２°Ｃから４５°Ｃ程度に加温することによ
り、癌細胞を壊死化させる癌の温熱治療法が周知であり
、生体内深部に対してこの温熱治療法を行う装置として
、磁性材料を用いたマグネティックインプラント（磁性
材埋め込み）加温装置が用いられている。[Prior Art] A thermotherapy method for cancer that causes cancer cells to become necrotic by heating the cancer tissue to about 42°C to 45°C is well known. A magnetic implant (magnetic material embedded) heating device using a magnetic material is used as a device for this purpose.
このマグネティックインプラント加温装置は、一般に数
百ＫＨ２から２Ｈｔ＋ｚ程度の高周波電界を用いており
、手術の際に癌組織に埋め込まれた磁性材、例えば磁性
針に前記高周波電界をかけ、うず電流損とヒステリシス
損により生ずる磁性針の発熱によって癌組織を加温する
ものである。そして、この磁性針は生体内に長期間埋め
込まれていても無害なものから成り、計画的に定められ
た複数回の加温により癌の治療が効率良く行われる。This magnetic implant heating device generally uses a high-frequency electric field of about several hundred KH2 to 2Ht+z, and applies the high-frequency electric field to a magnetic material, such as a magnetic needle, implanted in cancer tissue during surgery to reduce eddy current loss and reduce eddy current loss. Cancer tissue is heated by the heat generated by the magnetic needle due to hysteresis loss. This magnetic needle is made of a harmless material even if it is implanted in a living body for a long period of time, and cancer treatment can be performed efficiently by heating the needle several times in a planned manner.
［発明が解決しようとする問題点Ｊ
従来技術の問題点
しかしながら、このマグネティックインプラント加温に
おいて、血流の多い部位に対して行う場合には血流によ
る冷却作用により充分な加温効果を得ることができない
という問題があった。丈なわら、血流沿２５９戒／１０
０ｇ −ｍｉｎの生体内部において、磁性材である磁性
針を、第３図に示されるように、１０ｍｍの間隔をおい
て均等に並べ、実線で示される位置の温度分布を実験に
て求めると、第４図に示されるような温度分布となる。[Problems to be Solved by the Invention J Problems of the Prior Art However, in this magnetic implant heating, when heating an area with a large amount of blood flow, it is difficult to obtain a sufficient heating effect due to the cooling effect of the blood flow. The problem was that it was not possible. Long straw, along the blood flow 259 precepts / 10
As shown in Figure 3, magnetic needles made of magnetic material are arranged evenly at intervals of 10 mm inside a living body at 0 g -min, and the temperature distribution at the position indicated by the solid line is experimentally determined. The temperature distribution becomes as shown in FIG.
これによれば、患部周辺の血液温度が３７°Ｃのときに
は磁性針による加温作用の効果がほとんどなく、患部組
織の大半が４２°Ｃを下回っている。According to this, when the blood temperature around the affected area is 37°C, the heating effect of the magnetic needle has almost no effect, and most of the affected tissue is below 42°C.
また、血液温度が３９°Ｃの場合にはほとんどの患部組
織の温度が４２°Ｃに達しており、血流温度が４０°Ｃ
のときには完全に患部温度は４２°Ｃに達している。Furthermore, when the blood temperature is 39°C, the temperature of most affected tissues has reached 42°C, and the blood flow temperature is 40°C.
By this time, the temperature of the affected area had completely reached 42°C.
これは、従来用いられていた数百ＫＩＩＺから２Ｈ１ｌ
ｚ程度の高周波電界では血流速度が速い場合にその加熱
作用が十分に行われず、患部組織を全体的に４２°Ｃま
で上げて均一に保つことができないことを意味する。This is 2H1L from several hundred KIIZ used conventionally.
This means that a high-frequency electric field of about z cannot sufficiently heat the affected tissue when the blood flow rate is high, and it is not possible to raise the temperature of the affected tissue to 42° C. and maintain it uniformly.
また、患部組織の最低温度を上げるために磁性針に大き
な発熱効果をもたらす高周波電界を与えることが考えら
れるが、これでは磁性針付近の組織が部分的に強く加熱
され人体に悪影響を及ぼすことどなる。Additionally, in order to raise the minimum temperature of the affected tissue, it is possible to apply a high-frequency electric field to the magnetic needle that produces a large heat-generating effect, but this may cause the tissue near the magnetic needle to be partially heated and have a negative effect on the human body. .
更に、温度を均一にするために磁性針の本数を増やすこ
とが考えられるが、これでは患部の負担が大きくなり、
また磁性針埋め込みあるいは加温後の取り出し等の処理
が煩雑であるという問題がある。従って、患部を均一に
暖めるには、暖めようとする患部の冷却作用をする血液
の温度を上げることが最も効果的であることが理解され
る。Furthermore, it is possible to increase the number of magnetic needles in order to equalize the temperature, but this would place a greater burden on the affected area.
Another problem is that the process of embedding the magnetic needle or removing it after heating is complicated. Therefore, it is understood that the most effective way to uniformly warm the affected area is to increase the temperature of blood, which has a cooling effect on the affected area.
発明の目的
本発明は前記従来の問題点を解決するためになされたも
のであり、その目的は、埋め込まれた磁性材近傍の組織
の温度とその血液の温度との差をなくして患部を均一に
加温することのできるマグネティックインプラント加温
装置を提供することにある。OBJECT OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and its purpose is to eliminate the difference between the temperature of the tissue near the implanted magnetic material and the temperature of the blood, thereby uniformizing the temperature of the affected area. An object of the present invention is to provide a magnetic implant heating device capable of heating a magnetic implant.
［問題点を解決するための手段及び作用］前記目的を達
成するために、本発明は、磁性材を患部に埋め込んで高
周波電界を与えることにより患部を加温するマグネティ
ックインプラント加温装置において、患部とその周辺の
広い範囲に誘電加温を生じさせる周波数の高層゛波電Ｗ
を与え、この誘電加温と前記高周波電界により得られる
マグネティックインプラント加温との両者にて患部を均
一に加温することを特徴とする。[Means and effects for solving the problems] In order to achieve the above object, the present invention provides a magnetic implant heating device that warms the affected area by embedding a magnetic material in the affected area and applying a high-frequency electric field. high-frequency electric wave W that causes dielectric heating in a wide area around the area.
The method is characterized in that the affected area is uniformly heated by both this dielectric heating and the magnetic implant heating obtained by the high-frequency electric field.
以上のような構成とすることにより、患部組織だけでな
くその周辺の広い範囲に流れる血液に対して誘電加温に
よる発熱を生じさせることができる。ずなわら、生体を
Ｍ ７１３体としてみなして高周波電界を与えることに
よりその部分に誘電損が生じる。そして、この誘電損に
より生体組織が発熱するため、流動する血液であっても
患部に流れる際の血液は必ず所定温度まで上げられたも
のとなり、この加温された血液とマグネティックインプ
ラント加温による磁性材の発熱作用とによって患部全体
が均一に加温・されることとなる。With the above configuration, it is possible to generate heat by dielectric heating not only in the affected tissue but also in the blood flowing in a wide range around the affected tissue. Of course, when a living body is regarded as an M713 body and a high-frequency electric field is applied, dielectric loss occurs in that part. Since biological tissue generates heat due to this dielectric loss, even if the blood is flowing, it will always be heated to a certain temperature when flowing to the affected area, and this heated blood and the magnetic implant will be heated. Due to the heat generating effect of the material, the entire affected area is heated and heated evenly.
［実施例］ 以下図面に基づいて本発明の好適な実施例を説明する。[Example] Preferred embodiments of the present invention will be described below based on the drawings.
第１図にはマグネティックインプラント加温装置の構成
例が示され、高周波電界を発生させる中空洞の加温コイ
ル体１０には整合回路１２が接続されており、この整合
回路１２にて高周波発振器１４から供給される高周波電
流を制御している。FIG. 1 shows a configuration example of a magnetic implant heating device, in which a matching circuit 12 is connected to a hollow heating coil body 10 that generates a high-frequency electric field, and a high-frequency oscillator 14 is connected to the matching circuit 12. It controls the high frequency current supplied from the
そして、前記加温コイル体１０内において、患者１６の
患部が加温コイル体１０内の中心に位置するようにセツ
ティングされ、高周波電界が患部とその周辺に与えられ
る。The heating coil body 10 is set so that the affected area of the patient 16 is located at the center of the heating coil body 10, and a high frequency electric field is applied to the affected area and its surroundings.
本発明において特徴的なことは、マグネティックインプ
ラント加温の際に同時に誘電加温を生じさせることであ
り、マグネティックインプラント加温のための高周波周
波数として訓電加温を生じさせる周波数、例えば１３．
５６Ｈ１ｌＺの高周波が選択される。この誘電加温を生
じさせる周波数は、約１０ＨＩＩＺ以上の高周波である
ことが必要であり、この高周波による電界が生体内組織
に作用する際に生ずる誘電損によって生体自身に発熱を
起させる。A characteristic feature of the present invention is that dielectric heating is simultaneously generated during magnetic implant heating, and the high frequency for heating the magnetic implant is a frequency that generates electromagnetic heating, for example, 13.
A high frequency of 56H1lZ is selected. The frequency that causes this dielectric heating needs to be a high frequency of approximately 10 HIIZ or more, and the body itself generates heat due to dielectric loss that occurs when the electric field due to this high frequency acts on the tissue within the body.
従って、生体内組織あるいは血液にｄノいて高周波電界
が掛けられた部位に限り、その温度が２〜３°Ｃ上がす
ることとなり、患部周辺の血液温度は３９°Ｃから４０
°Ｃを保つこととなる。Therefore, only in areas where a high-frequency electric field is applied to in-vivo tissues or blood, the temperature will rise by 2 to 3°C, and the blood temperature around the affected area will range from 39°C to 40°C.
The temperature will be maintained at °C.
第２図には、ＪＡＨＥＳ Ｒ，ＯＬ［ＳＯＮのピーグル
犬を使った実験により得られた患部の血液の温度上昇を
表わすグラフが示され、約４０分間の誘雷加温にて動脈
内の血流温度は４１°Ｃに達し、また筋肉の温度は４２
．５°Ｃに達していることが理解される。ここで、筋肉
の温度が４２．５°Ｃに達しているが、これはあくまで
生体の表面組織に対して誘電加温が有効であることを示
すにすぎず、本発明装置が深部組織に対して用いられる
ものであることから、この誘電加温のみで深部組織まで
の加湿効果を得ることはできない。Figure 2 shows a graph showing the temperature rise of the blood in the affected area obtained in an experiment using JAHES R, OL [SON's Peagle dog. The flow temperature reached 41°C, and the muscle temperature reached 42°C.
．． It is understood that the temperature has reached 5°C. Here, the temperature of the muscle has reached 42.5°C, but this only shows that dielectric heating is effective for the surface tissue of the living body, and that the inventive device is effective for the deep tissue. Since the humidifying device is used for a variety of purposes, it is not possible to obtain a humidifying effect deep into the tissues using only this dielectric heating.
従って、このような誘電加温による血液の加温と患部組
織に埋め込まれた磁性針による加温との両者にて患部の
効率の良い均一な加温が達成される。Therefore, efficient and uniform heating of the affected area is achieved by both the heating of the blood by such dielectric heating and the heating by the magnetic needle embedded in the tissue of the affected area.
なお、本実施例において用いられている高周波電界は磁
性針が加熱し過ぎない程度の周波数が用いられるが、磁
性材の過加熱を防止するためにキューリポイントのある
磁性針、例えばＮｉパラジウム合金にマンガンを加えた
ものなどを用いることができ、一定温度以上になると磁
性体としての性質を失わせて発熱を停止させることによ
り磁性針の温度制御をすることができる。Note that the high-frequency electric field used in this example has a frequency that does not overheat the magnetic needle, but in order to prevent overheating of the magnetic material, a magnetic needle with a Curie point, such as a Ni-palladium alloy, is used. A material containing manganese can be used, and the temperature of the magnetic needle can be controlled by losing its magnetic properties and stopping heat generation when the temperature exceeds a certain level.
［発明の効果１
以上説明したように、本発明によれば、患部とその周辺
に誘電加温を生じさせ、マグネティックインプラント加
温と誘雷加温との両者にて患部を加温するようにしたの
で、血流の多い部位であっても均一な加温分布を得るこ
とができ、癌などの効率の良い温熱治療を行うことがで
きる。[Effect of the invention 1 As explained above, according to the present invention, dielectric heating is generated in the affected area and its surroundings, and the affected area is heated by both magnetic implant heating and dielectric heating. Therefore, uniform heating distribution can be obtained even in areas with a large amount of blood flow, and efficient thermal treatment for cancer and the like can be performed.
第１図は本発明に係るマグネティックインブランｌ−加
温装置の構成図、
第２図は高周波電界がかけられた生体内の温度上昇を示
すグラフ図、
第３図は磁性針の配置状態を示す説明図、第４図は磁性
針量の温度分布を示す説明図である。
１０ ・・・ 加温コイル体
１２ ・・・ 整合回路
１４ ・・・ 高周波発振器
１６ ・・・ 患者Fig. 1 is a configuration diagram of the magnetic in-blank heating device according to the present invention, Fig. 2 is a graph showing the temperature rise in the living body when a high-frequency electric field is applied, and Fig. 3 shows the arrangement of the magnetic needles. FIG. 4 is an explanatory diagram showing the temperature distribution of the amount of magnetic needles. 10... Heating coil body 12... Matching circuit 14... High frequency oscillator 16... Patient
Claims (1)
とにより患部を加温するマグネティックインプラント加
温装置において、患部とその周辺の広い範囲に誘電加温
を生じさせる周波数の高周波電界を与え、この誘電加温
と前記高周波電界により得られるマグネティックインプ
ラント加温との両者にて患部を均一に加温することを特
徴とするマグネティックインプラント加温装置。(1) In a magnetic implant heating device that warms the affected area by embedding a magnetic material in the affected area and applying a high-frequency electric field, a high-frequency electric field of a frequency that causes dielectric heating is applied to the affected area and a wide area around it. A magnetic implant heating device characterized by uniformly warming an affected area using both dielectric heating and magnetic implant heating obtained by the high-frequency electric field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29210585A JPS62152474A (en) | 1985-12-26 | 1985-12-26 | Magnetic implant heating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29210585A JPS62152474A (en) | 1985-12-26 | 1985-12-26 | Magnetic implant heating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62152474A true JPS62152474A (en) | 1987-07-07 |
Family
ID=17777607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29210585A Pending JPS62152474A (en) | 1985-12-26 | 1985-12-26 | Magnetic implant heating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62152474A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6456635B1 (en) | 1998-07-14 | 2002-09-24 | Sharp Kabushiki Kaishiki | Semiconductor laser device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5611049A (en) * | 1979-07-06 | 1981-02-04 | Olympus Optical Co | Local heater for tissue in coelom |
| JPS59225054A (en) * | 1983-06-03 | 1984-12-18 | インタ−・ノバ株式会社 | Cancer heat treating method and apparatus |
-
1985
- 1985-12-26 JP JP29210585A patent/JPS62152474A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5611049A (en) * | 1979-07-06 | 1981-02-04 | Olympus Optical Co | Local heater for tissue in coelom |
| JPS59225054A (en) * | 1983-06-03 | 1984-12-18 | インタ−・ノバ株式会社 | Cancer heat treating method and apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6456635B1 (en) | 1998-07-14 | 2002-09-24 | Sharp Kabushiki Kaishiki | Semiconductor laser device |
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