JPH0420454Y2 - - Google Patents
Info
- Publication number
- JPH0420454Y2 JPH0420454Y2 JP1988081820U JP8182088U JPH0420454Y2 JP H0420454 Y2 JPH0420454 Y2 JP H0420454Y2 JP 1988081820 U JP1988081820 U JP 1988081820U JP 8182088 U JP8182088 U JP 8182088U JP H0420454 Y2 JPH0420454 Y2 JP H0420454Y2
- Authority
- JP
- Japan
- Prior art keywords
- balloon
- electrode
- prostate
- flexible shaft
- 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.)
- Expired
Links
- 210000002307 prostate Anatomy 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 25
- 238000000015 thermotherapy Methods 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 210000003708 urethra Anatomy 0.000 description 25
- 206010060862 Prostate cancer Diseases 0.000 description 6
- 208000000236 Prostatic Neoplasms Diseases 0.000 description 6
- 239000002826 coolant Substances 0.000 description 6
- 239000000110 cooling liquid Substances 0.000 description 5
- 238000007669 thermal treatment Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 206010028980 Neoplasm Diseases 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 201000011510 cancer Diseases 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000027939 micturition Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Thermotherapy And Cooling Therapy Devices (AREA)
- Electrotherapy Devices (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は前立腺温熱治療用腔内アプリケータに
係り、より詳細には、高周波誘電加温により腫瘍
等を温熱治療する際に適用され得る前立腺温熱治
療用腔内アプリケータに係る。[Detailed description of the invention] [Industrial application field] The present invention relates to an intracavitary applicator for thermotherapy of the prostate, and more specifically, the invention relates to an intracavitary applicator for thermotherapy of the prostate, which can be applied to thermotherapy of tumors etc. by high-frequency dielectric heating. It relates to an intracavity applicator for thermotherapy.
［従来の技術］
癌細胞が正常細胞と比較して熱に弱いことを利
用して患部を加温することにより治療を行なう高
周波温熱治療は知られている。[Prior Art] High-frequency thermotherapy is known, which performs treatment by heating the affected area by taking advantage of the fact that cancer cells are more sensitive to heat than normal cells.
従来の高周波誘電加温法では、生体内の目標加
温部位を含む領域を２つの板状電極ではさみ、高
周波電源からこの板状電極間に高周波電流を流す
ことにより温熱治療が行なわれている。 In the conventional high-frequency dielectric heating method, a region containing the target area to be heated inside the body is sandwiched between two plate-shaped electrodes, and a high-frequency current is passed between the plate-shaped electrodes from a high-frequency power source to perform thermal treatment. .
さらに、一方の電極を食道等に挿入し得る腔内
電極とし、この電極表面に、生体に対する腔内電
極の密着性の向上と目標加温部位の冷却を兼ねた
冷却媒体を循環させる構造のものが提案されてお
り、例えば特公昭62−48505号及び特開昭60−
119962号に開示されている。 Furthermore, one electrode is an intracavitary electrode that can be inserted into the esophagus, etc., and a cooling medium is circulated on the surface of this electrode to improve the adhesion of the intracavitary electrode to the living body and to cool the target heating area. have been proposed, for example, Japanese Patent Publication No. 48505/1983 and Japanese Patent Application Publication No. 60/1989.
No. 119962.
特公昭62−48505号に開示される腔内電極は、
腔内に挿入された電極と体外に配置された電極と
の間に高周波電流を流し、腔内に挿入された電極
周辺のみを選択的に加温する腔内用誘電加熱電極
構造体として構成されている。 The intracavity electrode disclosed in Japanese Patent Publication No. 62-48505 is
It is constructed as an intracavity dielectric heating electrode structure that passes a high-frequency current between an electrode inserted into the cavity and an electrode placed outside the body, selectively heating only the area around the electrode inserted into the cavity. ing.
特開昭60−119962号に開示される腔内電極装置
には、高周波用電極を囲繞しており、伸長するこ
となく臓器内壁に接触し得る袋状体の内側に冷却
液を給排する手段が設けられている。 The intraluminal electrode device disclosed in JP-A-60-119962 includes a means for supplying and discharging a cooling liquid to the inside of a bag-like body that surrounds a high-frequency electrode and can contact the inner wall of an organ without stretching. is provided.
温熱治療による前立腺癌治療装置としては、発
熱素子として正特性サーミスタを用いた装置が特
開昭62−122661号に記載され、アンテナを用いた
装置が欧州特許第246176号及び米国特許第
4601296号に、また、超高周波を用いる装置がソ
連特許第1093347号に記載されている。欧州特許
第246176号及び米国特許第4601296号の装置は、
アンテナを直腸内に挿入し、バルーン付カテーテ
ルを用いて温度センサを尿道内に挿入して前立腺
癌治療を行なうように構成されている。 As a prostate cancer treatment device using thermal therapy, a device using a positive temperature coefficient thermistor as a heating element is described in JP-A-62-122661, and a device using an antenna is described in European Patent No. 246176 and US Patent No.
4601296, and a device using ultra-high frequencies is described in Soviet Patent No. 1093347. The device of European Patent No. 246176 and US Patent No. 4601296 is
The antenna is inserted into the rectum and the temperature sensor is inserted into the urethra using a catheter with a balloon to perform prostate cancer treatment.
［考案が解決しようとする問題点］
癌の温熱治療、特に前立腺癌の温熱治療に従来
の高周波誘電加温用腔内電極構造体、例えば特公
昭62−48505号及び特開昭60−119962号の電極構
造体を応用する場合、前立腺の位置は膀胱付近の
尿道周辺であるが、腔内電極構造体を尿道に挿入
した際、電極構造体を設置する位置を決めるのは
治療医にまかされており、電極構造体の位置決め
が困難であり、さらに治療中に電極構造体の移動
や電極構造体の抜け出し等により、患部を確実に
加温治療するのは容易ではない。前立腺癌の温熱
治療における腔内アプリケータの位置決めの困難
性は、特開昭62−122661号の正特性サーミスタを
用いた装置、米国特許第4601296号の加温用アン
テナを用いた装置及びソ連特許第1093347号の超
高周波を用いる装置においても見られ、位置決め
を確実に行ない得る腔内アプリケータが要望され
ていた。[Problems to be solved by the invention] Conventional intracavity electrode structures for high-frequency dielectric heating for thermal treatment of cancer, especially prostate cancer, such as Japanese Patent Publication No. 62-48505 and Japanese Patent Application Laid-open No. 60-119962. When applying this electrode structure, the prostate is located around the urethra near the bladder, but when inserting the intracavitary electrode structure into the urethra, it is up to the treating physician to decide where to place the electrode structure. It is difficult to position the electrode structure, and furthermore, it is not easy to reliably perform heating treatment on the affected area due to the movement of the electrode structure or the electrode structure coming off during treatment. The difficulty in positioning the intraluminal applicator in thermotherapy for prostate cancer has been addressed by a device using a positive temperature coefficient thermistor in JP-A No. 62-122,661, a device using a heating antenna in U.S. Pat. No. 4,601,296, and a Soviet patent. This was also seen in the device using ultra-high frequencies in No. 1093347, and there was a need for an intracavity applicator that could ensure positioning.
一方、欧州特許第246176号では加温用アンテナ
の位置決めの問題を解決するために、温度センサ
ーと電磁場検出センサーを有するバルーン付カテ
ーテルを尿道内に挿入して、先端のバルーンを膀
胱内で膨張させてカテーテルの位置を固定するこ
とにより電磁場検出センサーを前立腺の中央部に
固定し、電磁場のピークを検出することにより、
直腸内に挿入した加温用アンテナの位置を決める
方法を用いる装置を開示する。この装置は、構造
が複雑であり、生体に適用する際の操作が面倒で
ある。 On the other hand, in European Patent No. 246176, in order to solve the problem of positioning the heating antenna, a catheter with a balloon equipped with a temperature sensor and an electromagnetic field detection sensor is inserted into the urethra, and the balloon at the tip is inflated in the bladder. By fixing the position of the catheter and fixing the electromagnetic field detection sensor in the center of the prostate, and detecting the peak of the electromagnetic field,
A device using a method of positioning a warming antenna inserted into the rectum is disclosed. This device has a complicated structure and is difficult to operate when applied to a living body.
本考案の目的は、電極構造体を尿道に位置決め
し得ると共に電極構造体の固定を確実に行い得、
加えて、治療中に患者に生理的な不快感を与える
ことのない前立腺温熱治療用腔内アプリケータを
提供することにある。 The purpose of the present invention is to be able to position an electrode structure in the urethra and to securely fix the electrode structure.
Another object of the present invention is to provide an intracavity applicator for prostate thermotherapy that does not cause physiological discomfort to the patient during treatment.
［問題点を解決するための手段］
本考案によれば、前述の目的は、可撓性シヤフ
ト、当該可撓性シヤフトに支持された電極体、当
該電極体により加温される前立腺の部位の表面近
傍を冷却する手段を有してなる腔内用高周波誘電
加温電極構造体と、当該電極構造体が前立腺の腔
内に配置された際、膀胱内に位置するように可撓
性シヤフトの先端側に取付けられており、膨張時
の容積が５〜30mlとなる膨張可能な抜け出し防
止用のバルーンと、バルーン内に流体を導入する
と共に当該導入された流体をバルーンから排出す
べく可撓性シヤフトに設けられた流体導入排出手
段とを備えたことを特徴とする前立腺温熱治療用
腔内アプリケータにより達成される。[Means for Solving the Problems] According to the present invention, the above object is to provide a flexible shaft, an electrode body supported by the flexible shaft, and a region of the prostate heated by the electrode body. an intracavity high-frequency dielectric heating electrode structure having means for cooling near the surface; and a flexible shaft that is positioned within the bladder when the electrode structure is placed within the prostate cavity. An inflatable balloon that is attached to the tip side and has a volume of 5 to 30 ml when inflated to prevent it from slipping out, and a flexible balloon that introduces fluid into the balloon and expels the introduced fluid from the balloon. This is achieved by an intracavity applicator for prostate thermotherapy characterized by comprising a fluid introduction/exhaust means provided on the shaft.
［作用］
本考案の前立腺温熱治療用腔内アプリケータに
おいては、膨張可能な抜け出し防止用のバルーン
は、腔内用高周波誘電加温電極構造体が前立腺の
腔内に配置された際、膀胱内に位置するように可
撓性シヤフトの先端側に取付けられており、膨張
時の容積が５〜30mlとなる。[Function] In the intracavitary applicator for prostate thermotherapy of the present invention, the inflatable balloon for preventing escape is inserted into the bladder when the intracavitary high-frequency dielectric heating electrode structure is placed in the cavity of the prostate. It is attached to the tip side of the flexible shaft so that it is located at , and the volume when inflated is 5 to 30 ml.
本考案の腔内アプリケータは、バルーンの膨張
時の容積が5ml未満とならないため、前立腺の温
熱治療の際、流体により膨張したバルーンが膀胱
内において膀胱の頸部（内尿道口）に当接して、
電極構造体を尿道に位置決めし得、また、柔軟な
尿道から電極構造体が抜け出るのを確実に防止し
得る。更に、本考案の腔内アプリケータは、バル
ーンの膨張時の容積が30mlを越えないため、バ
ルーンが膀胱内に配置された際に膀胱を過度に圧
迫することがない。従つてそれによつて患者に尿
意を催させることがない。また、バルーンが膀胱
を過度に圧迫することがないので、治療が長時間
に亘るような場合でも、患者が尿意を催すことを
最低限に抑えることができ、催尿によつて治療を
中断せざるを得ないような事態が発生するのを防
止し得る。 The intracavitary applicator of the present invention does not have a volume of less than 5 ml when the balloon is inflated, so during thermal treatment of the prostate, the balloon inflated by fluid will not come into contact with the neck of the bladder (internal urethral meatus) within the bladder. hand,
The electrode structure can be positioned in the urethra and can be reliably prevented from slipping out of the flexible urethra. Furthermore, in the intracavitary applicator of the present invention, since the volume of the balloon when inflated does not exceed 30 ml, the balloon does not place excessive pressure on the bladder when placed within the bladder. Therefore, it does not cause the patient to have an urge to urinate. In addition, since the balloon does not put excessive pressure on the bladder, it is possible to minimize the patient's desire to urinate even if the treatment lasts for a long time, and prevents treatment from being interrupted due to urination. This can prevent unavoidable situations from occurring.
即ち本考案の腔内アプリケータは、電極構造体
を尿道に位置決めし得ると共に電極構造体の固定
を確実に行い得、加えて、治療中に患者に生理的
な不快感を与えることがない。 That is, the intraluminal applicator of the present invention can position the electrode structure in the urethra and securely fix the electrode structure, and in addition, does not cause physiological discomfort to the patient during treatment.
また、本考案の前述の構成に加えて、膨張前の
バルーンの端部を包囲することにより、バルーン
と電極体との間の距離を変え得る移動可能な筒体
を設けた場合には、尿道内における電極構造体の
位置の微調整を行うことができ、確実な温熱治療
を実施し得る。 In addition to the above-described configuration of the present invention, if a movable cylindrical body is provided that can change the distance between the balloon and the electrode body by surrounding the end of the balloon before inflation, the urethra Fine adjustment of the position of the electrode structure within the body can be made to ensure reliable thermal treatment.
本考案の前立腺温熱治療用腔内アプリケータに
於いては、前立腺癌の温熱治療に前述の腔内アプ
リケータを適用する場合、前述の腔内アプリケー
タを、バルーンが萎んだ状態で尿道に挿入し、バ
ルーンが前立腺の位置を通過して、膀胱内まで挿
入された後、バルーンを膀胱内で膨張させ、腔内
アプリケータを抜き出す方向に軽く引き、バルー
ンが膀胱の頸部即ち内尿道口に引つかかるまで引
き出すことにより、腔内用高周波誘電加温電極構
造体の電極体が前立腺の患部に最も近い位置に固
定される。 In the intracavitary applicator for prostate thermotherapy of the present invention, when the aforementioned intracavitary applicator is applied to the thermotherapy of prostate cancer, the aforementioned intracavitary applicator is inserted into the urethra with the balloon deflated. After the balloon has passed the prostate and been inserted into the bladder, the balloon is inflated within the bladder and the intracavitary applicator is pulled gently in the direction of withdrawal, allowing the balloon to reach the neck of the bladder, that is, the internal urethral orifice. By pulling it out until it is caught, the electrode body of the intracavity high-frequency dielectric heating electrode structure is fixed at the position closest to the affected area of the prostate.
［実施例］ 本考案の実施例を図面に基づいて説明する。[Example] Embodiments of the present invention will be described based on the drawings.
第１図は、本考案の前立腺温熱治療用腔内アプ
リケータの第１の実施例の説明図である。 FIG. 1 is an explanatory view of the first embodiment of the intracavity applicator for prostate thermotherapy of the present invention.
１０は本考案の前立腺温熱治療用腔内アプリケ
ータである。 10 is an intracavity applicator for prostate thermotherapy of the present invention.
１１は電極体１２を支持する可撓性シヤフトで
ある。該可撓性シヤフト１１は該電極体１２へ電
気を供給する導線１９と、冷却液を給排するため
の給排口１４，１５及び通路２０，２１並びに温
度センサー導線２４を備えている。可撓性シヤフ
ト１１は適用部位に正しく電極体を設置するため
容易に変形可能であり、又、形状を保持すること
が可能な強度を持つ素材、例えばシリコンゴム、
テフロン等からなる。又、可撓性シヤフト１１の
形状、大きさ等は使用目的に応じ任意に設計すれ
ば良く、挿入、設置、抜去の容易さから、該可撓
性シヤフト１１は直径0.3〜0.6cm、長さ25〜40cm
程度の管状又は円柱状を例示し得る。 11 is a flexible shaft that supports the electrode body 12. The flexible shaft 11 includes a conductor 19 for supplying electricity to the electrode body 12, supply/discharge ports 14, 15 and passages 20, 21 for supplying and discharging coolant, and a temperature sensor conductor 24. The flexible shaft 11 is easily deformable in order to properly install the electrode body at the application site, and is made of a material strong enough to maintain its shape, such as silicone rubber,
Made of Teflon, etc. Further, the shape, size, etc. of the flexible shaft 11 may be arbitrarily designed depending on the purpose of use, and for ease of insertion, installation, and removal, the flexible shaft 11 has a diameter of 0.3 to 0.6 cm and a length of 0.3 to 0.6 cm. 25~40cm
Examples include tubular or cylindrical shapes.
電極体１２はコイル状又は網目状等の若干の柔
軟性を持たせた銅、銀等の金属からなる。該電極
体１２には電極体と電源（図示せず）とを接続す
るための導線１９が可撓性シヤフト１１に設けら
れている。 The electrode body 12 is made of a metal such as copper or silver and has a coiled or mesh shape with some flexibility. A conductive wire 19 is provided on the flexible shaft 11 of the electrode body 12 for connecting the electrode body and a power source (not shown).
該電極体１２を囲繞する可撓性高分子膜よりな
る袋状体１３は、直径0.5〜１cm、長さ２〜５cm
の伸長することのない袋状体を例示し得る。 The bag-shaped body 13 made of a flexible polymer film surrounding the electrode body 12 has a diameter of 0.5 to 1 cm and a length of 2 to 5 cm.
An example may be a non-stretchable pouch-like body.
該袋状体１３は、可撓性シヤフト１１に設けら
れた冷却液の給排口１４，１５及び冷却液の導
入・排出路２０，２１を介して、電極体１２と袋
状体１３との間に形成される空間内に水又は導電
性液体等の冷却液を満たし循環させるように可撓
性シヤフト１１に取付けられている。電極体１２
により加温される前立腺の部位の表面近傍を冷却
する手段は、袋状体１３、冷却液の給排口１４，
１５及び冷却液の導入・排出路２０，２１から構
成される。可撓性シヤフト１１、電極体１２、及
び前述の冷却する手段は腔内用高周波誘電加温電
極構造体（以下、電極構造体と略称する）を構成
する。冷却液は温熱治療時の局部加熱を防止する
と共に、目標加温部位に電極構造体を密着させる
等の目的で使用される。 The bag-like body 13 connects the electrode body 12 and the bag-like body 13 via coolant supply/discharge ports 14 and 15 provided in the flexible shaft 11 and coolant introduction/discharge passages 20 and 21. It is attached to the flexible shaft 11 so that a cooling liquid such as water or a conductive liquid is filled and circulated in the space formed therebetween. Electrode body 12
The means for cooling the vicinity of the surface of the prostate region heated by is a bag-like body 13, a cooling fluid supply/discharge port 14,
15 and coolant introduction/discharge passages 20 and 21. The flexible shaft 11, the electrode body 12, and the cooling means described above constitute an intracavity high-frequency dielectric heating electrode structure (hereinafter abbreviated as electrode structure). The cooling liquid is used for the purpose of preventing local heating during thermotherapy and bringing the electrode structure into close contact with the target heating site.
又、温熱治療中に目標加温部位の加温状態を監
視するために温度センサー１８が袋状体１３の外
表面にあらかじめ設けられており、目標加温部位
の温度は温度センサー導線２４を介して検出され
る。 In addition, a temperature sensor 18 is provided in advance on the outer surface of the bag-like body 13 in order to monitor the heating state of the target heating area during the thermotherapy, and the temperature of the target heating area is measured via the temperature sensor conductor 24. detected.
治療時の電極構造体の位置決めと治療中の電極
構造体の抜け出し防止用の膨張可能なバルーン１
６は、可撓性シヤフト１１の先端側に取付けられ
る。バルーン１６を形成する膜は膨張可能な天然
又は合成のゴム等よりなる高分子膜例えばシリコ
ンゴム製の膜を例示し得、バルーン１６の膨張時
の容積は、５〜30mlである。バルーン１６は、
流体（通常気体又は液体）の給排口１７及び流体
の注入排出用管２２を介して、通常は温水を注入
して膨張させるけれども、空気を注入した場合、
膀胱側の高周波電流の流れがバルーン１６内の空
気により妨害されるため、より患部を有効に加温
し得ると共に必要でない部分の加温を防止し得
る。気体又は液体の注入排出用管２２の基端には
弁２３を設けバルーン１６を膨張状態に維持す
る。給排口１７及び注入排出用管２２は、流体導
入排出手段を構成する。 Inflatable balloon 1 for positioning the electrode structure during treatment and preventing the electrode structure from coming off during treatment
6 is attached to the distal end side of the flexible shaft 11. The membrane forming the balloon 16 may be an inflatable polymer membrane made of natural or synthetic rubber, for example, a membrane made of silicone rubber, and the volume of the balloon 16 when inflated is 5 to 30 ml. Balloon 16 is
Normally, warm water is injected through the fluid (usually gas or liquid) supply/discharge port 17 and the fluid injection/discharge pipe 22 for expansion, but when air is injected,
Since the flow of high-frequency current on the bladder side is obstructed by the air within the balloon 16, the affected area can be heated more effectively and unnecessary heating of parts can be prevented. A valve 23 is provided at the proximal end of the gas or liquid injection/discharge pipe 22 to maintain the balloon 16 in an expanded state. The supply/discharge port 17 and the injection/discharge pipe 22 constitute a fluid introduction/discharge means.
第２図及び第３図は、本考案の前立腺温熱治療
用腔内アプリケータ（以後、腔内アプリケータと
略称する）の第２の実施例の説明図である。第２
の実施例による腔内アプリケータは、膨張前のバ
ルーン１６の端部を包囲すると共に、バルーン１
６と電極体１２との間の距離を変え得る移動可能
な筒体２６を備えている。 FIGS. 2 and 3 are explanatory diagrams of a second embodiment of the intracavitary applicator for prostate thermotherapy (hereinafter abbreviated as intracavitary applicator) of the present invention. Second
The intraluminal applicator according to the embodiment surrounds the end of balloon 16 before inflation and
6 and the electrode body 12 is provided.
即ち第１図に示すバルーン１６の基端部３５と
袋状体１３の先端３６との間に筒体２６を設ける
ことにより、尿道内における電極構造体の位置の
微調整が可能となる。 That is, by providing the cylindrical body 26 between the proximal end 35 of the balloon 16 and the distal end 36 of the bag-like body 13 shown in FIG. 1, it is possible to finely adjust the position of the electrode structure within the urethra.
バルーン１６の基端部３５と袋状体１３の先端
３６との間の距離は、筒体２６を移動させてバル
ーン１６の基端部３５の位置を移動させることに
より、変えることができるが、長さの異る筒体２
６を使用してバルーン１６の基端部３５の位置を
移動させることによつても、変えることができ
る。 The distance between the proximal end 35 of the balloon 16 and the distal end 36 of the bag-like body 13 can be changed by moving the cylindrical body 26 and the position of the proximal end 35 of the balloon 16. Cylindrical body 2 with different lengths
6 can also be used to change the position of the proximal end 35 of the balloon 16.
筒体２６は、柔かすぎるとバルーン１６の膨張
によりまくれ上がり、筒体２６はバルーンの反対
側に折りたたまれて二重になり、バルーン１６と
電極体１２との間の距離の変更、即ち尿道内での
電極構造体の位置調整の役割を果さないため、筒
体２６は、膨張によるまくれ上がりを生じない強
さを持ち、さらに、バルーン１６内の流体を排出
した後、該腔内アプリケータを腔内から抜去する
時に抜け出さぬよう可撓性シヤフト１１に固定さ
れる必要がある。従つて、筒体２６として、適度
の硬度を有するシリコンチユーブ等を例示し得
る。 If the cylindrical body 26 is too soft, it will roll up due to the expansion of the balloon 16, and the cylindrical body 26 will be folded to the opposite side of the balloon and become double, changing the distance between the balloon 16 and the electrode body 12, i.e., the urethra. Because it does not play a role in adjusting the position of the electrode structure within the balloon 16, the barrel 26 is strong enough not to curl up due to expansion, and furthermore, after draining the fluid within the balloon 16, the intraluminal application It needs to be fixed to the flexible shaft 11 so that it does not slip out when it is removed from the cavity. Therefore, as the cylindrical body 26, a silicon tube or the like having appropriate hardness may be used.
第３図に示す腔内アプリケータは、筒体２６と
して、合成樹脂製の硬い薄肉の筒体２６を使用し
た例であり、この腔内アプリケータの場合、筒体
２６を可撓性シヤフト１１に固定するための固定
バンド２７、さらに安全のため、腔内アプリケー
タを腔内から抜去する際に筒体２６が抜け落ちる
のを防止するための抜け落ち防止用バンド２８が
可撓性シヤフト１１の先端に適用されている。 The intracavitary applicator shown in FIG. 3 is an example in which a hard, thin-walled cylinder 26 made of synthetic resin is used as the cylinder 26. In the case of this intracavitary applicator, the cylinder 26 is attached to the flexible shaft 11. A fixing band 27 for fixing the intraluminal applicator to the tip of the flexible shaft 11, and a falling-off prevention band 28 for preventing the cylindrical body 26 from falling off when the intraluminal applicator is removed from the cavity, are attached to the tip of the flexible shaft 11. applied to.
第４図は、本考案の腔内アプリケータの第３の
実施例の説明図である。 FIG. 4 is an explanatory diagram of a third embodiment of the intraluminal applicator of the present invention.
袋状体１３として膨張性の袋状体を使用した例
である。 This is an example in which an expandable bag-like body is used as the bag-like body 13.
第１図に示した腔内アプリケータのように伸長
することのない袋状体１３が可撓性シヤフト１１
に取り付けられた場合、腔内アプリケータの尿道
への挿入時、袋状体１３は可撓性シヤフト１１の
周囲に折りたたまれるが、折りひだにより尿道を
傷つける恐れが皆無ではない。尿道への挿入時に
おける尿道の損傷を防ぐため第４図のように膨張
性の袋状体１３を使用してもよい。 The flexible shaft 11 has a bag-like body 13 that does not extend like the intraluminal applicator shown in FIG.
When attached to the urethra, the pouch 13 is folded around the flexible shaft 11 when the intraluminal applicator is inserted into the urethra, but there is a risk that the folds may injure the urethra. In order to prevent damage to the urethra during insertion into the urethra, an inflatable pouch 13 may be used as shown in FIG.
さらに、図示はしないが、第２図、第３図と同
様な筒体、バンドを有する構成としてもよい。 Furthermore, although not shown, a structure having a cylinder body and a band similar to those shown in FIGS. 2 and 3 may be used.
次に、上記構成からなる本考案の腔内アプリケ
ータを前立腺癌の温熱治療に使用する方法につい
て説明する。 Next, a method of using the intracavitary applicator of the present invention having the above configuration for thermal treatment of prostate cancer will be described.
第５図は目標加温部に設置した状態の本考案の
腔内アプリケータの説明図である。 FIG. 5 is an explanatory diagram of the intracavity applicator of the present invention installed in the target heating section.
第５図には、筒体２６を使用しない第１図の腔
内アプリケータが示されている。３０は膀胱、３
１は前立腺、３２は尿道、３３は内尿道口であ
る。 5 shows the intraluminal applicator of FIG. 1 without the barrel 26. In FIG. 30 is the bladder, 3
1 is the prostate, 32 is the urethra, and 33 is the internal urethral orifice.
まず、本考案の腔内アプリケータを、バルーン
１６を膨張させない状態で、袋状体１３を可撓性
シヤフト１１の周囲に折りたたみ（筒体２６を使
用する場合、必要に応じて筒体２６を適正位置に
配設して）、尿道３２に挿入する。その際、バル
ーン１６が尿道の前立腺３１に対応する部位を通
過して膀胱３０内に達するまで腔内アプリケータ
を尿道３２に挿入する。次に該バルーン１６に温
水又は空気の所定容量を注入してバルーン１６を
膨張させた後、腔内アプリケータを尿道入口側に
引き戻し、バルーン１６が膀胱３０の内尿道口３
３に引つかかり腔内アプリケータが抜けなくなる
所まで引き戻す。このようにして電極体１２が尿
道３２内において前立腺３１の患部に最も近い位
置に固定される。 First, the intraluminal applicator of the present invention is assembled by folding the bag-like body 13 around the flexible shaft 11 without inflating the balloon 16 (if the cylindrical body 26 is used, the cylindrical body 26 is properly positioned) and inserted into the urethra 32. At this time, the intracavitary applicator is inserted into the urethra 32 until the balloon 16 passes through a portion of the urethra corresponding to the prostate gland 31 and reaches the bladder 30 . Next, after inflating the balloon 16 by injecting a predetermined volume of warm water or air into the balloon 16, the intraluminal applicator is pulled back toward the urethral entrance side, and the balloon 16 is inserted into the internal urethral orifice of the bladder 30.
3 and pull back until the intracavity applicator cannot be pulled out. In this way, the electrode body 12 is fixed within the urethra 32 at a position closest to the affected area of the prostate 31.
次に、冷却液の導入・排出路２０，２１を介し
て冷却液を袋状体１３に循環させる。 Next, the cooling liquid is circulated through the bag-shaped body 13 via the cooling liquid introduction/discharge passages 20 and 21.
前述のように目標加温部に設置された本考案の
腔内アプリケータの電極体と、体表面へ設置され
た体外電極構造体の電極体との間に高周波電流を
流すことにより温熱治療を実施し得る。この場
合、本考案の腔内アプリケータの電極体の電極面
積より10倍以上大きい電極面積をもつ電極構造体
を体外電極構造体として使用することにより本考
案の腔内アプリケータの電極体が位置する目標加
温部のみを加温することが可能となる。 As mentioned above, thermotherapy is performed by passing a high-frequency current between the electrode body of the intracavitary applicator of the present invention, which is installed in the target heating area, and the electrode body of the extracorporeal electrode structure, which is installed on the body surface. It can be implemented. In this case, the electrode body of the intracavitary applicator of the present invention can be positioned by using an electrode structure having an electrode area that is at least 10 times larger than the electrode area of the electrode body of the intracavitary applicator of the present invention as an extracorporeal electrode structure. It becomes possible to heat only the target heating section.
［考案の効果］
本考案によれば、電極構造体を尿道に位置決め
し得ると共に電極構造体の固定を確実に行い得、
加えて、治療中に患者に生理的な不快感を与える
ことのない前立腺温熱治療用腔内アプリケータを
提供することができる。[Effects of the invention] According to the invention, the electrode structure can be positioned in the urethra, and the electrode structure can be reliably fixed.
In addition, it is possible to provide an intracavity applicator for prostate thermotherapy that does not cause physiological discomfort to the patient during treatment.
また、本考案の腔内アプリケータに対して、バ
ルーンと電極体との間の距離を変え得る移動可能
な筒体を設けた場合には、尿道内における電極構
造体の位置の微調整が可能な腔内アプリケータを
提供し得る。 Furthermore, if the intraluminal applicator of the present invention is provided with a movable cylinder that can change the distance between the balloon and the electrode body, it is possible to finely adjust the position of the electrode structure within the urethra. An intraluminal applicator may be provided.
第１図〜第４図は本考案の第１〜第３の実施例
を示す説明図、第５図は本考案の腔内アプリケー
タの使用方法の説明図である。
１１……可撓性シヤフト、１２……電極体、１
３……袋状体、１４，１５……冷却液の給排口、
１６……バルーン、１７……流体の給排口、１８
……温度センサー、１９……電極体用導線、２
０，２１……冷却液の導入・排出路、２２……流
体の注入排出用管、２３……弁、２４……温度セ
ンサー導線、２６……筒体、２７……固定バン
ド、２８……抜け落ち防止用バンド、３０……膀
胱、３１……前立腺、３２……尿道、３３……内
尿道口、３５……バルーンの基端部、３６……袋
状体の先端。
FIGS. 1 to 4 are explanatory views showing first to third embodiments of the present invention, and FIG. 5 is an explanatory view of how to use the intracavitary applicator of the present invention. 11... Flexible shaft, 12... Electrode body, 1
3... Bag-like body, 14, 15... Coolant supply/discharge port,
16...Balloon, 17...Fluid supply/discharge port, 18
... Temperature sensor, 19 ... Leading wire for electrode body, 2
0, 21...Cooling fluid introduction/discharge path, 22...Fluid injection/discharge pipe, 23...Valve, 24...Temperature sensor lead wire, 26...Cylinder body, 27...Fixing band, 28... Band for preventing falling off, 30... Bladder, 31... Prostate, 32... Urethra, 33... Internal urethral meatus, 35... Proximal end of balloon, 36... Tip of pouch-like body.
Claims (1)
された電極体、当該電極体により加温される前
立腺の部位の表面近傍を冷却する手段を有して
なる腔内用高周波誘電加温電極構造体と、当該
電極構造体が前記前立腺の腔内に配置された
際、膀胱内に位置するように前記可撓性シヤフ
トの先端側に取付けられており、膨張時の容積
が５〜30mlとなる膨張可能な抜け出し防止用
のバルーンと、前記バルーン内に流体を導入す
ると共に当該導入された流体を前記バルーンか
ら排出すべく前記可撓性シヤフトに設けられた
流体導入排出手段とを備えたことを特徴とする
前立腺温熱治療用腔内アプリケータ。 (2) 膨張前の前記バルーンの端部を包囲すること
により、バルーンと前記電極体との間の距離を
変え得る移動可能な筒体を有することを特徴と
する実用新案登録請求の範囲第１項に記載の腔
内アプリケータ。[Claims for Utility Model Registration] (1) A flexible shaft, an electrode body supported by the flexible shaft, and a means for cooling the vicinity of the surface of the prostate region heated by the electrode body. an intracavity high-frequency dielectric heating electrode structure, which is attached to the distal end side of the flexible shaft so as to be located in the bladder when the electrode structure is placed in the cavity of the prostate; an inflatable balloon for preventing slipping out having a volume of 5 to 30 ml when inflated; and a flexible shaft provided for introducing fluid into the balloon and discharging the introduced fluid from the balloon. 1. An intracavitary applicator for prostate thermotherapy, characterized by comprising a fluid introduction and discharge means. (2) Utility model registration claim 1, characterized by having a movable cylindrical body that can change the distance between the balloon and the electrode body by surrounding the end of the balloon before inflation. Intracavitary applicators as described in Section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988081820U JPH0420454Y2 (en) | 1988-06-21 | 1988-06-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988081820U JPH0420454Y2 (en) | 1988-06-21 | 1988-06-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH023743U JPH023743U (en) | 1990-01-11 |
| JPH0420454Y2 true JPH0420454Y2 (en) | 1992-05-11 |
Family
ID=31306590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988081820U Expired JPH0420454Y2 (en) | 1988-06-21 | 1988-06-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0420454Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60119962A (en) * | 1983-12-01 | 1985-06-27 | オリンパス光学工業株式会社 | Electrode apparatus for body cavity |
| JPS61176324A (en) * | 1985-01-31 | 1986-08-08 | フクダ電子株式会社 | Electrode apparatus |
| JPS62117548A (en) * | 1985-10-04 | 1987-05-29 | バ−ゼム・ナシエフ | Sonde for electric treatment of tubular organ mucosa |
-
1988
- 1988-06-21 JP JP1988081820U patent/JPH0420454Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60119962A (en) * | 1983-12-01 | 1985-06-27 | オリンパス光学工業株式会社 | Electrode apparatus for body cavity |
| JPS61176324A (en) * | 1985-01-31 | 1986-08-08 | フクダ電子株式会社 | Electrode apparatus |
| JPS62117548A (en) * | 1985-10-04 | 1987-05-29 | バ−ゼム・ナシエフ | Sonde for electric treatment of tubular organ mucosa |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH023743U (en) | 1990-01-11 |
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