JP2619941B2 - Thermal therapy for probe - Google Patents

Thermal therapy for probe

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Publication number
JP2619941B2
JP2619941B2 JP27563288A JP27563288A JP2619941B2 JP 2619941 B2 JP2619941 B2 JP 2619941B2 JP 27563288 A JP27563288 A JP 27563288A JP 27563288 A JP27563288 A JP 27563288A JP 2619941 B2 JP2619941 B2 JP 2619941B2
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JP
Grant status
Grant
Patent type
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.)
Expired - Lifetime
Application number
JP27563288A
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Japanese (ja)
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JPH02121675A (en )
Inventor
信二 八田
均 唐沢
隆志 塚谷
栄一 布施
達也 斉藤
正明 林
康一郎 石原
誠 稲葉
晋一 西垣
Original Assignee
オリンパス光学工業株式会社
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
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B18/1477Needle-like probes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B2018/1405Electrodes having a specific shape
    • A61B2018/1425Needle
    • A61B2018/143Needle multiple needles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B2018/1405Electrodes having a specific shape
    • A61B2018/1425Needle
    • A61B2018/1432Needle curved

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は例えば前立腺肥大部等を温熱治療する温熱治療用プローブに関する。 DETAILED DESCRIPTION OF THE INVENTION [FIELD OF THE INVENTION The present invention relates to thermal therapy probe for thermal treatment, for example, prostatic hypertrophy unit like.

[従来の技術] 近年、前立腺肥大症の治療を温熱で行なう方法が考えられている。 [Prior Art] Recently, a method for treating prostatic hypertrophy in heat is considered. これは前立腺を43℃前後で加温すると、その前立腺肥大症が治癒することを利用するものである。 This When heated at about 43 ° C. prostate is to utilize the fact that the enlarged prostate heals.

そして、従来は周囲にマイクロ波用アンテナを設けたカテーテルを尿道に挿入してそのアンテナからマイクロ波を照射し、加温治療していた。 And, conventionally microwave irradiated from the antenna by inserting a catheter provided with an antenna for microwaves around the urethra, was warming therapy.

また、特開昭62−292173号公報で知れるようにチューブ体の中間一部の外周に金属パイプなどの導電体を設け、これにより加温用電界を集中させるようにしたものが提案されている。 Further, JP-conductors such as metal pipe provided at an intermediate part of the outer periphery of the tube body as become known in 62-292173, JP those so as to concentrate the electric field for heating has been proposed by this .

[発明が解決しようとする課題] しかしながら、上記加温方式はいずれも被加温対象の部位、たとえば前立腺の表面にまたはその近傍に、マイクロ波用アンテナまたは加温用電極を設置するのみであるから、その前立腺等の患部を全体的に均一に加温することはできない。 [Problems to be Solved] However, the heating system is also the target heating object Any site, for example, at or near the surface of the prostate, only installing the antenna or warming electrode for microwave from can not be entirely uniformly heating the affected area of ​​the prostate, or the like. また、全体的に確実かつ効率よく加温することができなかった。 Moreover, it was not possible to warm good overall reliably and efficiently.

本発明は上記課題に着目してなされたもので、その目的とするところは被加温対象部を全体的に均一で効率よく確実に加温することができる温熱治療用プローブを提供することにある。 The present invention has been made in view of the above problems, and an object thereof to provide a thermal therapeutic probe capable of efficiently and reliably heated with uniform throughout the target heating object unit is there.

[課題を解決するための手段および作用] 上記課題を解決するために本発明の温熱治療用プローブは体腔内に挿入するプローブ本体と、このプローブ本体内にその先端から突没自在に設けられ露出して被加温対象部位に刺通する複数の加温用針状電極と、この針状電極を露出する操作手段とからなり、プローブ本体を体腔内に挿入し、その各針状電極を露出し被加温対象部位に刺通して加温するようにしたものである。 [Means and operation for solving the problem] thermotherapy probe of the present invention to solve the above problems and the probe body to be inserted into a body cavity, provided from the tip to the probe body to freely project and retract exposed to consists of a plurality of needle electrodes for heating pierce the target heating object part, and operating means for exposing the needle electrode, the probe body is inserted into the body cavity, exposing the respective needle electrodes and it is obtained by the so heated pierces the target heating target region.

このように複数の針状電極を被加温対象部位に刺通して加温するようにしたから、被加温対象部位を全体的に均一で効率よく確実に加温することができる。 Thus because the multiple needle electrode such that heating pierces the target heating target site, can be efficiently and reliably heated with uniform throughout the target heating target region.

[実施例] 第1図ないし第3図は本発明の第1の実施例を示すものである。 [Example] Figure 1 through Figure 3 shows a first embodiment of the present invention. この実施例は前立腺肥大症を治療するためのものである。 This embodiment is for treating prostatic hyperplasia. 第1図で示すようにその温熱治療用プローブ1は体腔内に挿入するプローブ本体として可撓性のシース2を有し、このシース2内にはカテーテル3が挿通されている。 Its thermal therapy probe 1 as shown in FIG. 1 has a flexible sheath 2 as a probe body to be inserted into the body cavity, the catheter 3 is inserted through the sheath 2. このカテーテル3の先端部分はそのシース2の先端開口から突き出せるように設けられている。 Distal portion of the catheter 3 is provided so as Tsukidaseru from the distal end opening of the sheath 2. カテーテル3の先端にはゴムで形成したバルーン4が設けられている。 The distal end of the catheter 3 balloon 4 is provided which is formed of rubber. このカテーテル3は可撓性で、その内部には軸方向に沿う流体供給用孔(図示しない。)が形成されていて、これは上記バルーン4に連通されている。 The catheter 3 is flexible, inside the (not shown.) Fluid supply hole along the axial direction be formed, which communicates with the said balloon 4. そして、バルーン4は通常収縮しているが、上記流体供給用孔より供給される流体によって第1図で示すように膨張するようになっている。 Then, the balloon 4 has been normally contracted, so as to expand as shown in FIG. 1 by the fluid supplied from the fluid supply hole.

また、上記シース2の先端部にはそれぞれ外側に曲がり癖のある複数の針状電極5がそのシース2の先端開口から突没自在に設けられている。 Further, a plurality of needle-like electrode 5 with a habit bending outwardly each of the distal end of the sheath 2 is provided so as to be freely project and retract from the distal end opening of the sheath 2. この各針状電極5はシース2の内部に挿入した図示しない操作ワイヤの先端に連結され、この操作ワイヤは手元側に設けた操作手段の操作ハンドル6により進退操作されるようになっている。 Each needle electrode 5 is connected to the distal end of the operation wire, not shown, inserted into the sheath 2, this operation wire is adapted to be moved back and forth by the operation handle 6 of the operation means provided on the proximal side. 操作ハンドル6は第2図で示すように上記シース2 Operation handle 6 is the sheath 2 as shown in Figure 2
の手元側基端に設けたシース保持部材7に対して進退自在に嵌着されている。 It is fitted retractably relative to the sheath holding member 7 provided on the proximal side base end of the. また、この操作ハンドル6には上記針状電極5に導通する接続端子8が設けられ、この接続端子8にはマイクロ波伝送用ケーブル9を介してマイクロ波発生装置10に接続されるようになっている。 Also, this is the operation handle 6 connecting terminals 8 electrically connected to the needle electrode 5 is provided to be connected to the microwave generator 10 to the connection terminal 8 via a microwave transmission cable 9 ing. さらに、操作ハンドル6には上記カテーテル3に通じる口金 Further, the mouthpiece communicating with the catheter 3 to the operating handle 6
11が設けられている。 11 is provided.

また、上記シース2の先端部には複数の針状電極5とともにそのシース2の先端開口から突没自在な感温素子部13が設けられている。 Further, protruding and retracting freely thermosensitive element portion 13 from the distal end opening of the sheath 2 with a plurality of needle-like electrodes 5 to the tip portion of the sheath 2 is provided. この感温素子部13はたとえば熱電対からなり、これに通じる測温ケーブル14はシース2 The temperature sensing element 13 is made of, for example, thermocouples, temperature measuring cable 14 leads to the sheath 2
の内部を通じて外部に設置される温度計15に接続されるようになっている。 It is adapted to be connected to a thermometer 15 installed to the outside through the inside of the. この温度計15の測温データは上記マイクロ波発生装置10を制御するコントロールユニット16 Control unit 16 temperature measuring data of the thermometer 15 for controlling the microwave generator 10
に接続されている。 It is connected to the.

次に、このように構成された温熱治療システムの使用方法を説明する。 Next, a method used for the thus configured thermal therapy system. まず、プローブ1のバルーン4を収縮させた状態で、ハンドル6を手元側に後退させる。 First, in a state of being deflated balloon 4 of the probe 1, to retract the handle 6 proximally. これによりカテーテル3とともにバルーン4はシース2内に引き込まれる。 Thus the balloon 4 with the catheter 3 is drawn into the sheath 2. また、各針状電極5および感温素子部13 Each needle electrode 5 and the temperature sensing element 13
もそのシース2内に引き込まれる。 Also retracted to its sheath 2.

そこで、このシース2を尿道17に挿入し、シース2の先端部を肥大した前立腺18(患部)のところに位置させる。 Therefore, the sheath 2 is inserted into the urethra 17, is positioned at the prostate 18 enlarged the distal end portion of the sheath 2 (affected area). そして、シース2を後退させることにより第3図で示すようにバルーン4、各針状電極5および感温素子部 Then, the balloon 4 as shown in FIG. 3 by retracting the sheath 2, the needle electrode 5 and the temperature sensing element section
13がそのシース2の先端から露出する。 13 is exposed from the distal end of the sheath 2.

そして、外側に湾曲する曲がり癖のある各針状電極5 Each needle electrode with a bending habit of outwardly curved 5
を肥大した前立腺18にそれぞれ突き刺す。 Piercing each prostate 18 hypertrophic the. 感温素子部13 Thermosensitive element 13
は前立腺18の表面部に当てまたは刺通させる。 It is hit or causes pierced in the surface portion of the prostate 18. また、バルーン3に送気してこれを膨張させる。 Further, inflate this by air in the balloon 3. これによりバルーン3は肥大した前立腺18の奥にある膀胱19側の壁面に当る状態で膨張して係止し、プローブ1を固定する。 Thus the balloon 3 is engaged with expanded state striking the walls of the bladder 19 side at the back of the prostate 18 enlarged to fix the probe 1.

ついで、前立腺18の温度を温度計15で測定し始めるとともに、マイクロ波発生装置10を作動してマイクロ波伝送用ケーブル9を通じてマイクロ波エネルギを上記各針状電極5に供給し、マイクロ波を出射してその前立腺18 Then, along with the start to measure the temperature of the prostate 18 at a temperature gauge 15, the microwave energy supplied to each needle electrode 5 through a microwave transmission cable 9 by operating the microwave generator 10, emits a microwave and the prostate 18
を加温する。 To warm. このとき、加温される前立腺18の温度は上記温度計15で測定され、その温度が43℃(例えば42℃〜 At this time, the temperature of the warmed is prostate 18 is measured by the thermometer 15, the temperature of 43 ° C. (e.g. 42 ° C. ~
45℃)前後になるようにコントロールユニット16によりマイクロ波の出力を制御する。 45 ° C.) for controlling the output of the microwave by the control unit 16 so that the front and rear.

しかして、上記患部の前立腺18はこれに刺通された針状電極5によってその内部から加温され、全体的に均一に加温できる。 Thus, the affected part of the prostate 18 is that the internal heating by the needle-like electrode 5 pierced thereto, can be uniformly heated overall.

なお、上記カテーテル3を先端まで突き抜ける中空なものとし、これにプローブの挿入を補助するガイドワイヤを挿通できるようにしてもよい。 Incidentally, it is assumed hollow penetrating the catheter 3 to the distal end, it may be able to insert a guide wire to aid insertion of the probe to this.

第4図および第5図は本発明の第2の実施例を示すものである。 FIGS. 4 and 5 shows a second embodiment of the present invention. この実施例は針状電極5の少なくとも1本のものを第5図で示すように中空状に形成し、この中空部 This embodiment is formed in a hollow shape as shown in FIG. 5 ones of the at least one needle-like electrode 5, the hollow portion
20内に熱電対からなる感温素子部13を挿通して設けたものである。 Those provided by inserting the temperature sensing element 13 composed of a thermocouple 20. これによれば、針状電極5とともに感温素子部13を患部内に刺通できる。 This enables piercing the temperature sensing element 13 in the affected area together with the needle-like electrode 5. このため、より正確に温度を測定することができる。 Therefore, it is possible to measure more accurately the temperature.

なお、本発明は上記各実施例のものに限定されるものではない。 The present invention is not intended to be limited to the above embodiments. その要旨を逸脱しない範囲で種々の変形が可能である。 And various modifications are possible without departing from the scope of the invention. また、使用する治療対象は前立腺に限らない。 Further, the subject to be used is not limited to the prostate. また、上記針状電極を2本で一対とする高周波用電極として構成し、その電極間に高周波エネルギを供給して通電加熱する方式としたものでもよい。 Also, configured as a high-frequency electrode to pair with two of the needle electrode may be obtained by a method of electrically heating by supplying high-frequency energy between the electrodes.

[発明の効果] 以上説明したように本発明の体腔内患部の温熱治療用プローブは複数の針状電極を被加温対象部位に刺通して加温するようにしたから、被加温対象部位を全体的に均一で効率よく確実に加温することができる。 Since thermal therapy for probe body cavity affected part of the present invention as has been described [Effect of the Invention] were a plurality of needle electrodes to be heated pierces the target heating target region, the target heating target region overall it is possible to efficiently and reliably heated in uniform.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

第1図は本発明の第1の実施例を示す温熱治療用プローブの側断面図、第2図は同じくその第1の実施例の温熱治療システムを含めた構成説明図、第3図は同じくその第1の実施例の温熱治療システムの使用説明図、第4図は本発明の第2の実施例を示す温熱治療用プローブの先端付近の側面図、第5図は同じくその第2の実施例における針状電極の先端部の側断面図である。 Side cross-sectional view of FIG. 1 thermotherapy probe showing a first embodiment of the present invention, FIG. 2 also configuration explanatory view including an thermal therapy system of the first embodiment, FIG. 3 is also use illustration of a thermal therapy system of the first embodiment, Figure 4 is a side view of the tip vicinity of the second thermal therapy probe showing an embodiment of the present invention, Fig. 5 also its second embodiment it is a side cross-sectional view of the tip of the needle electrode in the example. 1……温熱治療用プローブ、2……シース、5……針状電極、6……操作ハンドル、7……シース保持部材、18 1 ...... hyperthermia therapy probe, 2 ...... sheath 5 ...... needle electrode, 6 ...... operating handle, 7 ...... sheath holding member, 18
……前立腺。 ……prostate.

フロントページの続き (72)発明者 八田 信二 東京都渋谷区幡ケ谷2丁目43番2号 オ リンパス光学工業株式会社内 (72)発明者 布施 栄一 東京都渋谷区幡ケ谷2丁目43番2号 オ リンパス光学工業株式会社内 (72)発明者 林 正明 東京都渋谷区幡ケ谷2丁目43番2号 オ リンパス光学工業株式会社内 (72)発明者 西垣 晋一 東京都渋谷区幡ケ谷2丁目43番2号 オ リンパス光学工業株式会社内 (72)発明者 唐沢 均 東京都渋谷区幡ケ谷2丁目43番2号 オ リンパス光学工業株式会社内 (72)発明者 斉藤 達也 東京都渋谷区幡ケ谷2丁目43番2号 オ リンパス光学工業株式会社内 (56)参考文献 特開 昭57−55159(JP,A) 実開 昭60−49803(JP,U) Of the front page Continued (72) inventor Shinji Hatta Tokyo, Shibuya-ku, Hatagaya 2-chome No. 43 No. 2 Olympus Optical Industry Co., Ltd. in the (72) inventor Eiichi Fuse Shibuya-ku, Tokyo Hatagaya 2-chome No. 43 No. 2 Olympus Optical in industry Co., Ltd. (72) inventor Masaaki Hayashi Shibuya-ku, Tokyo Hatagaya 2-chome No. 43 No. 2 Olympus optical industry Co., Ltd. in the (72) inventor Shinichi Nishigaki Tokyo, Shibuya-ku, Hatagaya 2-chome No. 43 No. 2 Olympus optical in industry Co., Ltd. (72) inventor Hitoshi Karasawa Shibuya-ku, Tokyo Hatagaya 2-chome No. 43 No. 2 Olympus optical industry Co., Ltd. in the (72) inventor Saito, Tatsuya Tokyo, Shibuya-ku, Hatagaya 2-chome No. 43 No. 2 Olympus optical in industry Co., Ltd. (56) references Patent Sho 57-55159 (JP, A) JitsuHiraku Akira 60-49803 (JP, U)

Claims (1)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】体腔内の患部を温熱治療する温熱治療用プローブにおいて、体腔内に挿入するプローブ本体と、このプローブ本体内にその先端から突没自在に設けられ露出して被加温対象部位に刺通する複数の加温用針状電極と、この針状電極を露出する操作手段とからなり、プローブ本体を体腔内に挿入し、その各針状電極を露出し被加温対象部位に刺通して加温するようにしたことを特徴とする温熱治療用プローブ。 1. A thermal therapy probe for hyperthermia an affected part in a body cavity, the probe body to be inserted into a body cavity, exposed to the heating target region provided from the tip to the probe body freely projecting and retracting in the needle electrode for the plurality of heating piercing consists of a operation means for exposing the needle electrode, the probe body is inserted into the body cavity, the target heating target site to expose the respective needle electrodes pierced by hyperthermia probe, characterized in that so as to warm.
JP27563288A 1988-10-31 1988-10-31 Thermal therapy for probe Expired - Lifetime JP2619941B2 (en)

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