JPH0663162A - Induction heating device for medullary nail - Google Patents

Induction heating device for medullary nail

Info

Publication number
JPH0663162A
JPH0663162A JP4216009A JP21600992A JPH0663162A JP H0663162 A JPH0663162 A JP H0663162A JP 4216009 A JP4216009 A JP 4216009A JP 21600992 A JP21600992 A JP 21600992A JP H0663162 A JPH0663162 A JP H0663162A
Authority
JP
Japan
Prior art keywords
coil
magnetic field
magnetic
heating
induction heating
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.)
Withdrawn
Application number
JP4216009A
Other languages
Japanese (ja)
Inventor
Yoshio Murashita
良雄 村下
Yukihiro Ebisawa
幸弘 海老澤
Koichiro Oura
好一郎 大浦
Minoru Ikenaga
稔 池永
Yoshihiko Kotoura
良彦 琴浦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP4216009A priority Critical patent/JPH0663162A/en
Publication of JPH0663162A publication Critical patent/JPH0663162A/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary pins, nails or other devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Magnetic Treatment Devices (AREA)
  • Surgical Instruments (AREA)

Abstract

PURPOSE:To apply a safe and effective thermal treatment to an osteo-tumor with the use of an induction heating device, for heating medullary nail, using an induction heating part composed of magnetic poles which are set at opposite ends of an alternating magnetic field generating coil so as to binimize leakage flux from the coil. CONSTITUTION:In order to minimize leakage flux from magnetic poles 10, 11 so as to prevent a magnetic field from being applied to a part other than a part to be treated, for example, a coil 14 is expandable so auto be expanded and contracted for absorbing magnetic force which have been externally extracted, and the magnetic poles 10, 11 are secured so as to press the skin at opposite ends of the coil 14. An affected part 32 to be treated in which a medullary nail 34 has been previously embedded is set in the coil 14, and when a system circuit in a magnetic field applying part is energized, an alternating magnetic field is applied to the part 32 from the coil 14 so as to raise the temperature of the medullary nail 24. In order to prevent the magnetic field from being applied to a part other than the affected part to be treated, the magnetic poles absorbs magnetic force lines having been externally extracted, thereby it is possible to effectively heat up only a necessary part.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、骨腫瘍による病的骨折
の予防、治療 (骨の固定材) のために入れた髄内釘を癌
温熱治療に利用するための加温装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warming device for utilizing an intramedullary nail inserted for the prevention and treatment of pathological fractures due to bone tumors (bone fixing material) for hyperthermia treatment of cancer.

【０００２】[0002]

【従来の技術】一般に癌細胞は熱に弱く、43℃付近まで
加熱されると増殖能力を失い、やがて死滅すると言われ
ている。しかも、癌の患者は血流が少ないので、周囲に
比べて選択的に加熱されやすいため、癌の患部を局部的
に加温する温熱療法は極めて有効な癌の治療法である。2. Description of the Related Art Generally, it is said that cancer cells are vulnerable to heat and lose their proliferative ability when they are heated up to about 43 ° C. and eventually die. Moreover, since a patient with cancer has a low blood flow and is more likely to be selectively heated than the surroundings, hyperthermia which locally heats the affected part of the cancer is an extremely effective treatment method for cancer.

【０００３】従来、癌の患者を加熱する方法としては、
温水、赤外線、超音波、電磁波などが試みられ、そのた
めの装置が一部は製品化されているものもある。これら
の方法は、いずれも人体の組織そのものに直接熱を発生
あるいは付与させる方式であるため、当然周囲の正常細
胞をも同時に加熱することになり、そのための有害影響
をも考慮しなければならない。また、特に深部に癌の患
部が存在する場合には、人体の表面近傍ばかり暖まりや
すく、肝心の癌の患部を有効に加温することは容易でな
い。Conventionally, as a method for heating a cancer patient,
Hot water, infrared rays, ultrasonic waves, electromagnetic waves, etc. have been tried, and some devices for them have been commercialized. Since all of these methods generate or apply heat directly to the tissue of the human body, it naturally heats the surrounding normal cells at the same time, and it is necessary to consider the harmful effects therefor. Further, particularly when a cancer affected part exists in a deep part, it is easy to warm only near the surface of the human body, and it is not easy to effectively heat the important cancer affected part.

【０００４】そこで、深部の加熱を効果的に行うべく低
い周波数の加熱源を選択すると、人体の組織を直接熱発
生源として利用することができず、熱発生の媒体を別に
用いることになる。そのような熱発生の媒体としては、
SUS430鋼、低キュリー点のNi−Cu合金 (日本ハイパーサ
ーミア誌３(2); 155〜163)などが知られているが、こら
の合金を長時間生体内に埋入することには問題がある。
また、特願昭63−238786号には安全性と効率的加熱の点
でセラミックス材料を深部癌に対して用いることが提案
されている。Therefore, if a low frequency heating source is selected to effectively heat the deep portion, the tissue of the human body cannot be directly used as a heat generating source, and a heat generating medium is separately used. As a medium of such heat generation,
SUS430 steel and Ni-Cu alloy with low Curie point (Japanese hyperthermia 3 (2); 155-163) are known, but there is a problem in implanting these alloys in a living body for a long time. .
Further, Japanese Patent Application No. 63-238786 proposes to use a ceramic material for deep cancer in terms of safety and efficient heating.

【０００５】[0005]

【発明が解決しようとする課題】本発明は、骨腫瘍等に
対して安全で効果的な温熱療法を可能にする誘導加温装
置を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide an induction heating device that enables safe and effective hyperthermia for bone tumors and the like.

【０００６】[0006]

【課題を解決するための手段】従来、深部癌の一つであ
る骨腫瘍に対しては、ステンレス製の髄内釘が病的骨折
を予防あるいは治療するために用いられているが、本発
明者らは、この髄内釘を発熱体として用いれば、骨の補
強と癌の治療が同時に行えることに初めて着目した。し
かし、この髄内釘を加温するのに適した加温装置はなか
った。Conventionally, for bone tumor, which is one of the deep cancers, an intramedullary nail made of stainless steel has been used for preventing or treating pathological fractures. The authors have for the first time noticed that using this intramedullary nail as a heating element can simultaneously reinforce the bone and treat cancer. However, there was no suitable heating device for heating the intramedullary nail.

【０００７】従来の加温装置では、髄内釘の所望の場所
のみを局部的に加温することができない。たとえば、通
常のコイルによる誘導加温では、コイルの外部にも磁場
が発生するため、髄内釘の広い範囲が加温されてしま
い、正常部分も加温する点で不都合である。また、対向
設置した磁極対により発熱体を局部加熱しようとして
も、加熱効率が悪い。というのは、髄内釘はうず電流の
発生により発熱するため、円柱状の髄内釘に直角に交番
磁場を印加しても、うず電流がほとんど発生しないから
である。With the conventional heating device, it is not possible to locally heat only the desired location of the intramedullary nail. For example, in induction heating using a normal coil, a magnetic field is also generated outside the coil, so that a wide range of the intramedullary nail is heated, which is also inconvenient in heating a normal portion. Further, even if an attempt is made to locally heat the heating element by the pair of magnetic poles installed oppositely, the heating efficiency is poor. This is because the intramedullary nail generates heat due to the generation of an eddy current, and even if an alternating magnetic field is applied to the cylindrical intramedullary nail at a right angle, almost no eddy current is generated.

【０００８】本発明者らは、髄内釘に、例えば10〜500k
Hzの周波数で10〜100 Oeの交番磁場を平行に印加した場
合、うず電流により髄内釘および周囲の骨全体を、癌の
治療に必要な43℃に加温でき、癌の治療に応用できるこ
とを見出した。さらに、髄内釘の必要な部分だけ局部的
に加温する装置について検討した結果、交番磁場発生用
コイルの両端に該コイルが発生する磁場方向と直交する
ように磁極を設置することにより、このコイルの内部の
みに磁場を発生させ、髄内釘の必要部分のみを加温でき
ることを見出し、本発明を完成した。The present inventors have found that intramedullary nails have, for example, 10 to 500 k
When an alternating magnetic field of 10 to 100 Oe is applied in parallel at a frequency of Hz, the eddy current can heat the intramedullary nail and the entire surrounding bone to 43 ° C, which is necessary for cancer treatment, and can be applied to cancer treatment. Found. Furthermore, as a result of studying a device that locally heats only a necessary part of the intramedullary nail, by installing magnetic poles at both ends of the alternating magnetic field generating coil so as to be orthogonal to the magnetic field direction generated by the coil, The present invention has been completed by finding that a magnetic field can be generated only inside the coil to heat only a necessary portion of the intramedullary nail.

【０００９】ここに、本発明は、交番磁場発生用のコイ
ルと、該コイルの両端に該コイルの洩れ磁束を最小にす
るように設置した磁極からなる誘導加温部を有する、髄
内釘の誘導加温装置を要旨とする。According to the present invention, there is provided an intramedullary nail having a coil for generating an alternating magnetic field and an induction heating part having magnetic poles installed at both ends of the coil so as to minimize leakage flux of the coil. The main point is the induction heating device.

【００１０】本発明の装置を用いれば、骨腫瘍による病
的骨折の予防または治療のために入れた髄内釘を用い
て、癌の温熱治療が可能であり、しかも埋入された髄内
釘の一部分、すなわち、癌患部のみを局部的に加温でき
る。By using the device of the present invention, the intramedullary nail inserted for the prevention or treatment of pathological fracture due to bone tumor can be used for hyperthermia treatment of cancer, and the implanted intramedullary nail is used. It is possible to locally heat only a part of, i.e., the cancer affected part.

【００１１】加えて、本発明装置の利点は、何回でも治
療の必要なときに無侵襲で使用できること、および骨の
中心に熱源を置いた形となるため、周囲の骨を円周方向
に均一に加熱できることである。In addition, the advantage of the device of the present invention is that it can be used non-invasively as many times as necessary for treatment, and that the heat source is placed in the center of the bone, so that the surrounding bone is circumferentially stretched. That is, it can be heated uniformly.

【００１２】[0012]

【作用】次に、添付図面を参照しながら本発明を更に具
体的に説明する。図２は本発明の髄内釘の加温装置の一
例を示すブロック図である。この加温装置は、コイル14
および該コイルの両端に備えた磁極10および11からなる
誘導加温部(A) と、ブレーカー16、トランス18、パワー
調整回路20、そして所定周波数発振回路22からなる磁場
印加部(B) と、CPU 装置24、ディスプレイ26、スイッチ
コントロール回路28そして測温センサ30からなる磁場制
御部(C) とから構成されている。この装置を用いて実験
を行う場合、血流による冷却をシミュレートするため、
冷却水12で加熱体表面を冷却する(P) 。The present invention will be described more specifically with reference to the accompanying drawings. FIG. 2 is a block diagram showing an example of a device for heating an intramedullary nail according to the present invention. This heating device consists of a coil 14
And an induction heating unit (A) including magnetic poles 10 and 11 provided at both ends of the coil, a magnetic field applying unit (B) including a breaker 16, a transformer 18, a power adjusting circuit 20, and a predetermined frequency oscillation circuit 22, It is composed of a CPU device 24, a display 26, a switch control circuit 28, and a magnetic field controller (C) including a temperature measuring sensor 30. When performing experiments using this device, in order to simulate cooling by blood flow,
Cool the surface of the heating element with cooling water 12 (P).

【００１３】パワー調整にサイリスタを用い、周波数調
整にトランジスタ回路を用いてもよく、磁場の確保のた
めコイルを多重に巻いても良く、コイルへの冷却水の圧
損が増大する場合には、別に冷却水用のポンプとタンク
を用いても良い。なお、必要時にはＡ／Ｄコンバーター
を通じて測温センサ30をCPU 装置に接続してもよい。ま
た、CPU によらずFDI 制御のできるコントローラーを用
いても良い。A thyristor may be used for power adjustment, a transistor circuit may be used for frequency adjustment, multiple coils may be wound to secure a magnetic field, and when the pressure loss of the cooling water to the coil increases, it is separately required. A cooling water pump and tank may be used. If necessary, the temperature measuring sensor 30 may be connected to the CPU device through an A / D converter. Also, a controller capable of FDI control may be used regardless of the CPU.

【００１４】コイル14の長さは、患部の大きさに合わせ
て変えることができる。患部の大きさは、通常５〜20cm
程度であるので、それに合わせたコイル長とすればよ
い。コイルの径は、10〜30cm程度とし、温熱治療を行う
患者の患部の出入りがスムーズであればよい。The length of the coil 14 can be changed according to the size of the affected area. The size of the affected area is usually 5 to 20 cm
Since it is about the same, the coil length may be adapted to it. The coil has a diameter of about 10 to 30 cm, and it is sufficient if the affected part of the patient undergoing hyperthermia can move in and out smoothly.

【００１５】コイル14の両端に備えた磁極10および11
は、それぞれ１個ずつ設置すればよいが、少なくとも２
個ずつ配置するのが好ましい。また、この磁極の周波数
は、交番磁場発生用コイルと同一にした方が効果は大き
いが、それに限られることはなく、また静磁場（磁石）
であってもよい。Magnetic poles 10 and 11 provided at both ends of the coil 14.
It is sufficient to install one each, but at least 2
It is preferable to arrange them individually. Further, the effect of the frequency of this magnetic pole being the same as that of the alternating magnetic field generating coil is more effective, but the frequency is not limited to this, and the static magnetic field (magnet) is used.
May be

【００１６】図１に、交番磁場発生用コイルと、その両
端に設けた磁極からなる誘導加温部の説明図を示す。こ
の磁極は、コイルの洩れ磁束を最小にして、治療部以外
に磁場が印加されないように、外部に引き出す磁力線を
吸収するように設けられている。そのためには、例えば
コイル14を伸縮性ものとし、患部の大きさによって伸縮
させ、磁極10、11はコイル14の両端で、皮膚の上に圧迫
するように固定するような手段をとればよい。FIG. 1 is an explanatory view of an alternating magnetic field generating coil and an induction heating section composed of magnetic poles provided at both ends thereof. This magnetic pole is provided so as to minimize the magnetic flux leaking from the coil and absorb the magnetic line of force drawn to the outside so that the magnetic field is not applied to other than the treatment section. For that purpose, for example, the coil 14 may be made elastic, and it may be expanded or contracted depending on the size of the affected part, and the magnetic poles 10 and 11 may be fixed at both ends of the coil 14 so as to be pressed onto the skin.

【００１７】うず電流による単位長さ当たりの発熱量
は、発熱体が円柱状で発熱体が磁場方向に平行な場合、
次式により計算される。 Ｐe ＝π (μ0μρｆ)1/2ａＨ2 ここで、Ｐe : うず電流による単位長さの当たりの発熱
(Ｗ・ｍ-1) 、 μ0 : 自由空間の透磁率 (４π×10-7WbA-1ｍ-1) 、 μ : 発熱体の相対的透磁率、 ρ : 電気抵抗 (Ω・ｍ) 、 ａ : 発熱体の半径 (ｍ) 、 ｆ : 周波数 (Ｓ-1) 、 Ｈ : 磁場 (Ａ・ｍ-1) である。The amount of heat generated per unit length by the eddy current is as follows when the heating element is cylindrical and the heating element is parallel to the magnetic field direction.
It is calculated by the following formula. Pe = π (μ 0 μρf) 1/2 aH 2 where Pe: heat generation per unit length due to eddy current
(W · m −1 ), μ 0 : Permeability of free space (4π × 10 −7 WbA −1 m −1 ), μ: Relative permeability of heating element, ρ: Electric resistance (Ω · m), a: radius of heating element (m), f: frequency (S −1 ), H: magnetic field (A · m −1 ).

【００１８】次に、本発明にかかる加熱装置を使用して
患者の加温治療を行う際の、装置の操作法について説明
する。予め髄内釘が埋め込まれた患部32をコイル14の中
に置く。該患部32に、温度センサ30を刺入する。そして
磁場印加部(B) の系統回路を作動させると、コイル14か
ら人体の患部32に向けて交番磁場が印加され、予め埋め
込まれている髄内釘34が昇温する。このとき、100 〜50
0 kHz の周波数で10〜100 Oeの交番磁場を印加するのが
好ましい。また、癌等の治療に際しては、患部を42〜45
℃の範囲で加温し続けるのが望ましい。患部の加温温度
は温度センサ30により検出され、CPU 装置24を通じて、
パワー調整回路20に入力され、パワー調整回路20は、患
部32の温度が低い場合にはその出力を増し患部温度を上
昇させ、一方患部32の温度が高いときには、その出力を
減じ患部温度を低下させる。このようにして、患部の温
度は42〜45℃の範囲にあるように調整される。Next, a method of operating the heating apparatus according to the present invention when the patient is heated and treated will be described. The affected part 32 in which the intramedullary nail has been previously implanted is placed in the coil 14. The temperature sensor 30 is inserted into the affected area 32. Then, when the system circuit of the magnetic field applying section (B) is activated, an alternating magnetic field is applied from the coil 14 toward the affected area 32 of the human body, and the temperature of the pre-implanted intramedullary nail 34 rises. At this time, 100 to 50
It is preferred to apply an alternating magnetic field of 10-100 Oe at a frequency of 0 kHz. When treating cancer, etc., the affected area should be 42-45
It is desirable to continue heating in the range of ° C. The heating temperature of the affected area is detected by the temperature sensor 30, and the CPU device 24
When the temperature of the affected part 32 is low, the power adjustment circuit 20 increases the output and raises the affected part temperature, while when the temperature of the affected part 32 is high, the output is reduced and the affected part temperature is lowered. Let In this way, the temperature of the affected area is adjusted to be in the range of 42 to 45 ° C.

【００１９】さらに、本発明の装置では、治療部以外に
磁場が印加されないように、外部に引き出す磁力線を吸
収する磁極を備えているので、必要部分のみが効果的に
加温される。Further, since the apparatus of the present invention is provided with the magnetic pole for absorbing the magnetic field lines drawn to the outside so that the magnetic field is not applied to the portion other than the treatment portion, only the necessary portion is effectively heated.

【００２０】[0020]

【実施例】図２に示す装置を使い、200V、３相出力500
kWで100 kHz 50 Oe の交番磁場の下で、髄内釘を埋め込
んだヒトの大腿骨のモデル (寒天ファントム内に骨を置
き寒天内に水を流したモデル) を用いて加熱実験を行っ
た。[Example] Using the device shown in FIG. 2, 200V, three-phase output 500
A heating experiment was conducted using a model of a human femur with an intramedullary nail embedded (a model in which bone was placed in an agar phantom and water was poured into the agar) under an alternating magnetic field of 100 kHz and 50 Oe at kW. .

【００２１】このときの、骨の加熱曲線を図３に示す。
43℃まで、約１分で到達した。43℃に到達した後は磁場
の低下すなわち、誘導コイルに流れる電流の低下の手段
によって、その温度を保持した。図中、点線は磁場の強
さの変化を一般的傾向として示す。なお、本例では、血
流による冷却をシミュレートするため、少量の冷却水で
もって前記加熱体表面を冷却した。図中、血流による冷
却分とは温度上昇に伴い脈はくが増加し、血流が増加す
ることによる抜熱を意味する。The heating curve of bone at this time is shown in FIG.
It reached to 43 ° C in about 1 minute. After reaching 43 ° C, the temperature was maintained by the means of reducing the magnetic field, that is, the current flowing through the induction coil. In the figure, the dotted line shows the change in magnetic field strength as a general tendency. In this example, in order to simulate the cooling due to the blood flow, the surface of the heating body was cooled with a small amount of cooling water. In the figure, the cooling amount due to the blood flow means heat removal due to an increase in the pulsation with an increase in temperature and an increase in blood flow.

【００２２】また、100 kHz の磁極の設置による洩れ磁
束の減少を図４に示した。磁極を設置した場合と設置し
ない場合について、コイル端面からの距離 (cm) と磁場
強度(Ｇ）との関係を示す。これより、端部の磁極の設
置により、洩れ磁束が抑えられることが分かる。従っ
て、誘導コイル内の髄内釘のみ、すなわち患部のみが局
部的に誘導加熱されることになる。FIG. 4 shows the reduction of the leakage magnetic flux due to the installation of the magnetic pole of 100 kHz. The relationship between the distance (cm) from the coil end face and the magnetic field strength (G) is shown with and without the magnetic poles. From this, it can be seen that the leakage magnetic flux is suppressed by installing the magnetic poles at the ends. Therefore, only the intramedullary nail in the induction coil, that is, only the affected part is locally induction-heated.

【００２３】[0023]

【発明の効果】以上のように、本発明の加温装置によれ
ば、骨折の予防、治療のために骨髄内に埋入された髄内
釘を癌の温熱治療に利用することができ、しかも、骨髄
内の髄内釘の一部を局部的に加温することができるの
で、正常部分へに影響せず、骨腫瘍等の患部のみの有効
な加温ができ、癌の温熱治療に有用である。また、印加
磁場と温度センサを用いて長時間一定範囲の温度に調整
することにより、極めて効果的な温熱治療を行うことが
可能となる。As described above, according to the heating device of the present invention, the intramedullary nail embedded in the bone marrow for the prevention and treatment of bone fracture can be used for hyperthermia treatment of cancer. Moreover, since a part of the intramedullary nail in the bone marrow can be locally heated, it does not affect the normal part and can effectively heat only the affected part such as a bone tumor, which is suitable for hyperthermia treatment of cancer. It is useful. Further, by adjusting the temperature within a certain range for a long time using the applied magnetic field and the temperature sensor, it becomes possible to perform extremely effective hyperthermia treatment.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明加温装置の加温部の説明図である。FIG. 1 is an explanatory diagram of a heating unit of a heating device of the present invention.

【図２】本発明加温装置の一例を示すブロック図であ
る。FIG. 2 is a block diagram showing an example of the heating device of the present invention.

【図３】本発明装置による骨の加温結果を示す図であ
る。FIG. 3 is a diagram showing a bone heating result by the device of the present invention.

【図４】磁極設置による磁束減少の効果の一例を示す図
である。FIG. 4 is a diagram showing an example of an effect of reducing magnetic flux by installing magnetic poles.

【符号の説明】[Explanation of symbols]

10：磁極 11：磁極 12：冷却水 14：コイル 16：ブレーカー 18：トランス 20：パワー調整回路 22：周波数発振回路 24：ＣＰＵ 26：ディスプレー 28：スイッチコントロール回路 30：測温センサー 10: Magnetic pole 11: Magnetic pole 12: Cooling water 14: Coil 16: Breaker 18: Transformer 20: Power adjustment circuit 22: Frequency oscillation circuit 24: CPU 26: Display 28: Switch control circuit 30: Temperature sensor

───────────────────────────────────────────────────── フロントページの続き (72)発明者 池永 稔 京都市左京区北白川東蔦町18 メゾンフロ ーラ201号 (72)発明者 琴浦 良彦 京都市西京区御陵大枝山町５丁目14−16 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Minoru Ikenaga Minor 201, Maison Flora, 18 Minamitsutamachi, Kitashirakawa, Sakyo-ku, Kyoto (72) Yoshihiko Kotoura, 5-14-16 Goeyama-cho, Nishikyo-ku, Kyoto

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 交番磁場発生用のコイルと、該コイルの
両端に該コイルの洩れ磁束を最小にするように設置した
磁極からなる誘導加温部を有する、髄内釘の誘導加温装
置。1. An induction warming device for an intramedullary nail, comprising: an alternating magnetic field generating coil; and an induction heating unit having magnetic poles installed at both ends of the coil so as to minimize leakage flux of the coil. 【請求項２】 髄内釘を加温して癌温熱治療を行うため
の、請求項１記載の誘導加温装置。2. The induction heating device according to claim 1, which is used for heating an intramedullary nail to perform hyperthermia treatment of cancer.
JP4216009A 1992-08-13 1992-08-13 Induction heating device for medullary nail Withdrawn JPH0663162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4216009A JPH0663162A (en) 1992-08-13 1992-08-13 Induction heating device for medullary nail

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4216009A JPH0663162A (en) 1992-08-13 1992-08-13 Induction heating device for medullary nail

Publications (1)

Publication Number Publication Date
JPH0663162A true JPH0663162A (en) 1994-03-08

Family

ID=16681879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4216009A Withdrawn JPH0663162A (en) 1992-08-13 1992-08-13 Induction heating device for medullary nail

Country Status (1)

Country Link
JP (1) JPH0663162A (en)

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