WO2009118091A1 - Magnetwechselfeld-applikationsvorrichtung zur aufheizung von magnetischen oder magnetisierbaren substanzen in biologischem gewebe - Google Patents
Magnetwechselfeld-applikationsvorrichtung zur aufheizung von magnetischen oder magnetisierbaren substanzen in biologischem gewebe Download PDFInfo
- Publication number
- WO2009118091A1 WO2009118091A1 PCT/EP2009/001595 EP2009001595W WO2009118091A1 WO 2009118091 A1 WO2009118091 A1 WO 2009118091A1 EP 2009001595 W EP2009001595 W EP 2009001595W WO 2009118091 A1 WO2009118091 A1 WO 2009118091A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic
- field
- application device
- alternating
- applicator
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/002—Magnetotherapy in combination with another treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/40—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals
- A61N1/403—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals for thermotherapy, e.g. hyperthermia
- A61N1/406—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals for thermotherapy, e.g. hyperthermia using implantable thermoseeds or injected particles for localized hyperthermia
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/02—Magnetotherapy using magnetic fields produced by coils, including single turn loops or electromagnets
Definitions
- the invention relates to an alternating magnetic field application device for heating magnetic or magnetizable substances in biological tissue, in particular for thermotherapy with magnetic nanoparticles, according to the preamble of claim 1.
- a known generic magnetic field application device (EP 1 102 609 B1) consists of a large applicator with a magnetic yoke and two opposite, spaced by a Befeldungsspalt pole pieces on the yoke and with two each associated with a pole piece solenoids.
- This is a 3-applikator control unit for feeding alternating current with a certain amplitude, certain frequency and certain phase position connected to produce a largely uniform in the field of view magnetic field magnetic field of specific field strength.
- the biological tissue to be colonized as the targeting volume is recorded in the field of view.
- a patient with a body part to be fielded as the target volume for example with a diseased prostate, can be stored in the radiation gap in the radiation gap.
- the magnetic field alternating field application device according to the invention is described and explained essentially by way of a prostate carcinoma, without any restriction being attached to this application, since other diseases, in particular other tumors in the upper abdomen or pelvic region, can be appropriately treated.
- the known large applicator has an effective field diameter of the magnetic alternating field of about 300 mm, the field strength can be adjusted up to 18 kA / m.
- the known large applicator for these applications can only be operated with field strengths of about 4 to 4.5 kA / m, in which the effects of ring currents can usually still be tolerated well by a patient.
- the object of the invention is therefore to develop a generic magnetic alternating field application device so that a therapeutically sufficient exposure relatively small Befeldungszielvolumen, especially relatively small body areas of a patient is possible.
- a field concentrator which concentrates the alternating magnetic field of the large applicator in the target volume and in the vicinity of a body part to be fielded, such as a diseased prostate, is arranged in the irradiation gap of the large applicator and in the vicinity of the biological tissue to be fielded thereby locally strengthened there.
- ferrites are relatively low, they can be used in certain circumstances Therapy purposes be sufficient.
- Such a passive field concentrator as ferrite is particularly simple and inexpensive to produce.
- an active field concentrator with a magnetic coil is proposed as an induction coil, which is more expensive, but leads to a stronger field concentration and thus to a high local amplification of the magnetic alternating field of the large applicator.
- local amplification factors of about 3 to 4 can be achieved, for example in a prostate carcinoma. It is necessary for the at least one magnet coil of the field concentrator in the device to be aligned such that the magnetic axes of the field concentrator and the large applicator are approximately the same and that the magnet coil is supplied with an in-phase and in-phase synchronized alternating current, corresponding to the alternating current of the large applicator becomes.
- the large applicator control unit and the field concentrator control unit are connected or integrated with one another such that, for example, the field concentrator is also fed directly by the large applicator control unit in conjunction with a power unit.
- the amplitudes of the alternating currents are each independently adjustable for the large applicator and the field concentrator even with such a direct coupling, since in particular the maximum allowable amplitude at the large applicator depends on the individual physiological properties of a patient and different.
- the field concentrator control unit and the quasiapplikator control unit are separated from each other and operated independently.
- the field concentrator control unit interacts with a sensor that adjusts the frequency and phase of the large applicator Magnetic field detected. The corresponding values are then processed in the field concentrator control unit for synchronization.
- the magnetic coil of the active field concentrator is designed as a flat coil, wherein the target volume to be fielded is to be arranged approximately perpendicular to the flat coil plane in the region of the magnetic axis.
- a cylindrical coil is less suitable for an active field concentrator.
- the close range to the target volume according to claim 7 is prepared in that the field concentrator is designed as a rectal applicator with a flat elongated housing in a shape and size, the rectum of a patient as a receiving space is adjusted.
- a flat elongated housing serves as a sheathing for an elongated flat coil as a magnet coil, so that the magnetic axis extends approximately perpendicular to the housing plane.
- Such an elongated flat coil can be obtained by winding an annular flat coil, which is then compressed to form an elongated shape and optionally bent slightly.
- a tubular insertion tube is connected to the housing at a housing longitudinal end and angled in accordance with the anatomical conditions to the housing level.
- the rectal applicator can be inserted into the rectum with this introducer and thus, if necessary, can be adjusted and fixed in position.
- the housing according to claim 9 about 65 mm to 70 mm long, 20 mm high and 35 mm wide, with an approximately oval cross-section and rounded narrow surfaces.
- the area in the field direction should be as large as possible. The larger this area is, the larger the usable range of the magnetic field which the magnetic coil emits in the direction of the field.
- the introducer has compared to the housing has a smaller diameter of about 10 mm, since the tube approach remains when using the Rectalapplikators in the region of the sphincter and is reduced by its small diameter there irritation.
- the compatibility is to be improved according to claim 10, characterized in that although the housing and the insertion are made dimensionally stable, but at least the housing has a support made of soft material.
- the electrical connection lines to the solenoid coil and a coolant inlet and a coolant outlet are connected to the insertion tube and / or guided by this in the housing in an advantageous specific embodiment. Both the magnetic coil in the housing and the connection lines are cooled by the coolant.
- the electrical connection lines and coolant hoses are added with the smallest possible cross section in a flexible, attached to the insertion tube connecting hose in the course. It is essential that as a result of the flexible connection hose with the flexible connecting lines, as far as possible, no transverse forces acting on the insertion nozzle, which reduce the compatibility and could lead to an unfavorable maladjustment with respect to the field direction of the large applicator during the relatively long exposure period.
- the electrical connection lines and a coolant inlet hose are guided in the connection hose and in the insertion, wherein the remaining residual cross-section of the connection hose or the Ein Industriestutzens is used for the coolant return.
- This is a simple arrangement in connection with an effective cooling of the electrical connection lines, which are guided in the return current, achieved.
- clinically successfully tested settings are given such that the field applicator a field strength of about 3 kA / m is set to 4 kA / m, in conjunction with the above particular rectal applicator a 3-fold to 4-fold field strength increase in the target volume, especially in a prostate carcinoma.
- the treatment in a large applicator in conjunction with the active field concentrator, in particular as a rectal applicator is carried out regularly with a simultaneous activation of both applicators.
- a temporally offset activation possibly in conjunction with subsequent simultaneous activations of the individual applicators, can also lead to therapeutic success.
- use of the rectal applicator independent of a large applicator is also possible for therapy, especially if a treatment area is only about 10 to 20 mm away from the intestinal wall of the rectum.
- Such use is intended to include protection, with protection being claimed as a separate unit for the rectal applicator.
- Fig. 1 is a schematic sectional view through a
- FIG. 2 is a schematic representation of a magnetic alternating field of the large applicator with a field concentrator
- Fig. 3 is a schematic representation of a patient with a
- Fig. 6 is a block diagram of the control and power electronics of the rectal applicator.
- a magnetic field applicator is schematically shown as a large applicator 1 for thermotherapy or hyperthermia, in which a body in which a magnetic or magnetizable substance is introduced as a magnetic fluid, can be fielded.
- the large applicator 1 comprises a magnetic yoke 2, which is formed in an M-shape as Drekelkelan ever and two spaced parallel Vertikaljochteile 3, 4 and two connected therebetween Querjochteile 5, 6 has.
- the upper magnetic coil 9 and the lower magnetic coil 10 are formed as disc coils with one or more windings which are helical and made of stranded copper stranded wires.
- the magnetic yoke 2 and the pole pieces 7, 8 consist of ferrite blocks 16 with gaps in between.
- a cooling housing is provided with recesses 18 through which cooling air is introduced, which exits through the gaps on the magnetic yoke again.
- the ferrite blocks 16 are constructed of juxtaposed, aligned in the magnetic yoke 2 along the magnetic flux direction 17 ferrite plates, which are separated from each other transversely to the magnetic flux direction 17 by the cooling gaps.
- FIG. 2 schematically shows the region of the radiation gap 13 between the pole shoes 7, 8 of the large applicator, with an active field concentrator 19 mounted therein.
- the field concentrator 19 consists of a flat coil 20 with connecting leads 21, wherein the magnetic axis of the large applicator and the magnetic axis of the Flat coil 20 are rectified and coincide.
- the flat coil 20 is fed with a frequency equal and in phase synchronized alternating current corresponding to the alternating current of the large applicator 1. This results in the illustrated function of an active field concentrator 19 with a field enhancement in the region of the flat coil 20.
- a body part to be irradiated for example a diseased prostate 23, is schematically stored as the target volume, where a concentration and local amplification can be seen the magnetic alternating field of the large applicator is achieved by the field concentrator 19.
- Fig. 3 the arrangement of Fig. 2 is shown in a more concrete manner, with one by a pathologically enlarged prostate 23 is exposed accordingly.
- a schematic section through a patient in the region of the lower abdomen is shown with a bladder 22, which is arranged at the lower bladder outlet prostate 23, which surrounds the urethra 24 in an annular manner.
- the area of the prostate is here the target volume for the exposure and indicated by a circle 25 in its location and size.
- a rectal applicator 25 is introduced past the sphincter 26 into the rectum 27.
- the rectal applicator 25 will be explained in more detail with reference to FIGS. 4 and 5:
- FIG. 4 a shows a side view, a cross section in FIG. 4 b, and a plan view of the rectal applicator 25 in FIG. 4 c.
- the rectal applicator 25 includes a flat coil 20 in an elongated shape, which is encased by a housing 28.
- the housing is about 70 mm long, 20 mm high and 35 mm wide with an approximately oval cross-section and rounded narrow surfaces, which corresponds to the volume of the rectal 27.
- a tubular insertion nozzle 29 is formed, which, as shown in FIG. 3, angled according to the anatomical conditions to the housing level.
- the housing 28 may also have a support of soft material.
- the electrical connection lines 21 and a coolant inlet hose 30 are guided and connected in the insertion connection 29, the remaining residual cross section 31 being used as the coolant return.
- the flexible insertion tube 29 is adjoined by a flexible connection tube 22, through which the electrical connection lines 21 and the coolant inlet tube 30 are continued.
- FIG. 6 shows block diagram 34 for the supply and control of the rectal applicator 25.
- a connecting tube 32 having a scale for an insertion adjustment is concretely connected here to the insertion connection 29, through which the electrical connection lines 21 are guided by a power amplifier 35 and the coolant supply and removal 30, 31, starting from a continuous thermostat 36.
- a control unit 38 is provided, which cooperates with an operating unit 39, in particular for a power adjustment.
- a monitoring unit 40 is provided. From the rectal applicator 25, a signal line 41 may be guided back to the control unit, which are connected to sensors in the region of the rectal applicator 25.
- This may be one or more sensors that detect a position or that capture the frequency and phase of the magnetic alternating field of the large applicator for synchronization and forward it to the control unit 38 for an adjustment.
- the control unit 38 may also be connected directly to a control unit of the large applicator for such a synchronization, as indicated schematically by the line 42.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980111148.XA CN102083497B (zh) | 2008-03-28 | 2009-03-06 | 交变磁场治疗施源器 |
RU2010144032/14A RU2499617C2 (ru) | 2008-03-28 | 2009-03-06 | Устройство для приложения магнитного переменного поля для нагрева магнитных или намагничиваемых веществ в биологической ткани |
JP2011501120A JP5490090B2 (ja) | 2008-03-28 | 2009-03-06 | 患者の身体部分内の磁性流体を加熱する交番磁界適用装置 |
US12/934,625 US8688229B2 (en) | 2008-03-28 | 2009-03-06 | Alternating magnetic field application device for heating magnetic or magnetizable substances in biological tissue |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EPEP08005951 | 2008-03-28 | ||
EP08005951A EP2105163B1 (de) | 2008-03-28 | 2008-03-28 | Magnetwechselfeld-Applikationsvorrichtung zur Aufheizung von magnetischen oder magnetisierbaren Substanzen in biologischem Gewebe |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009118091A1 true WO2009118091A1 (de) | 2009-10-01 |
Family
ID=39714012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/001595 WO2009118091A1 (de) | 2008-03-28 | 2009-03-06 | Magnetwechselfeld-applikationsvorrichtung zur aufheizung von magnetischen oder magnetisierbaren substanzen in biologischem gewebe |
Country Status (9)
Country | Link |
---|---|
US (1) | US8688229B2 (de) |
EP (1) | EP2105163B1 (de) |
JP (1) | JP5490090B2 (de) |
KR (1) | KR20110014981A (de) |
CN (1) | CN102083497B (de) |
AT (1) | ATE511883T1 (de) |
ES (1) | ES2371210T3 (de) |
RU (1) | RU2499617C2 (de) |
WO (1) | WO2009118091A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011082796A2 (de) | 2009-12-16 | 2011-07-14 | Magforce Nanotechnologies Ag | Temperaturabhängige aktivierung von katalytischen nukleinsäuren zur kontrollierten wirkstofffreisetzung |
Families Citing this family (13)
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JP5529023B2 (ja) * | 2008-09-04 | 2014-06-25 | 猛 小林 | 抗制御性t細胞抗体と磁性微粒子を含む悪性腫瘍の温熱治療用キット、及びその温熱治療法 |
WO2016010977A1 (en) * | 2014-07-14 | 2016-01-21 | The Trustees Of Dartmouth College | Method and apparatus utilizing magnetic nanoparticles for performing hyperthermal therapies |
US9271789B2 (en) | 2012-07-18 | 2016-03-01 | The Trustees Of Dartmouth College | Method and apparatus utilizing magnetic nanoparticles for sterilizing female placental mammals, including women |
US9138293B1 (en) * | 2012-07-27 | 2015-09-22 | Brent Weisman | Intravascular treatment of lesions using magnetic nanoparticles |
US10463871B2 (en) | 2015-02-25 | 2019-11-05 | Weinberg Medical Physics Inc | Apparatus and method for medical image-guided 3-D printing within a body |
CN105169560B (zh) * | 2015-06-12 | 2016-06-15 | 郑州轻工业学院 | 一种控制磁纳米粒子加热区域的装置及方法 |
CA3030308C (en) | 2016-07-29 | 2022-04-05 | The Board Of Trustees Of Western Michigan University | Magnetic nanoparticle-based gyroscopic sensor |
KR101916413B1 (ko) | 2016-11-03 | 2018-11-07 | 연세대학교 원주산학협력단 | 나노입자 집중 장치 및 그의 구동 방법 |
KR101949940B1 (ko) * | 2017-12-19 | 2019-02-19 | 주식회사 세비카 | 신경 손상 방지가 가능한 저온 치료 장치 |
WO2019232336A1 (en) | 2018-06-01 | 2019-12-05 | Massachusetts Institute Of Technology | Scalable magnetomechanical schemes and devices for remote control of mechanosensitive cells |
KR102234149B1 (ko) | 2018-09-07 | 2021-03-30 | 네오-나노메딕스.인크 | 자성 물질 발열 기반의 교류 자기장 발생 장치 |
KR102368040B1 (ko) * | 2020-04-03 | 2022-02-28 | 서울대학교산학협력단 | 온열 치료를 위한 나노 입자 제공 매체 및 이를 이용한 온열 치료 시스템 |
US20240033533A1 (en) * | 2020-12-23 | 2024-02-01 | Solenic Medical, Inc. | System for application of alternating magnetic fields to reduce infection |
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US4340038A (en) * | 1980-12-15 | 1982-07-20 | Pacesetter Systems, Inc. | Magnetic field concentration means and method for an implanted device |
US5147284A (en) * | 1989-08-17 | 1992-09-15 | Fedorov Svjatoslav N | Device and method for restoration of visual functions |
DE19939001A1 (de) * | 1999-08-17 | 2001-03-15 | Hans Helmut Rein | Verfahren und Vorrichtung zum Bündeln von Feldlinien eines primären Magnetfeldes zu einem sekundären Magnetfeld erhöhter Feldliniendichte mit spiralenförmig verlaufenden Feldlinien |
WO2001056656A1 (en) * | 2000-02-02 | 2001-08-09 | The Catholic University Of America | Electromagnetic fields used in cancer and other therapies |
EP1102609B1 (de) * | 1999-08-07 | 2002-11-06 | MFH Hyperthermiesysteme GmbH | Magnetfeldapplikator zur aufheizung von magnetischen oder magnetisierbaren substanzen oder festkörpern in biologischem gewebe |
US20030045770A1 (en) * | 2001-08-17 | 2003-03-06 | Van Mullekom Arnoldus Petrus | Magnetic field therapy |
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RU2139112C1 (ru) * | 1998-03-16 | 1999-10-10 | Научно-Исследовательское Некоммерческое Партнерство Содействия Здравоохранению "Медикана" | Магнитотерапевтический аппарат |
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TWI292316B (en) * | 1999-10-11 | 2008-01-11 | Sod Conseils Rech Applic | Pharmaceutical composition of thiazole derivatives intended to inhibit mao and/or lipidic peroxidation and/or to act as modulators of sodium channels and the use thereof |
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JP4966575B2 (ja) * | 2006-03-30 | 2012-07-04 | 株式会社ナノセラピー研究所 | 生体加温装置 |
US8214053B2 (en) * | 2006-08-29 | 2012-07-03 | Nanotherapy Co., Ltd. | Body heating device |
-
2008
- 2008-03-28 AT AT08005951T patent/ATE511883T1/de active
- 2008-03-28 ES ES08005951T patent/ES2371210T3/es active Active
- 2008-03-28 EP EP08005951A patent/EP2105163B1/de not_active Not-in-force
-
2009
- 2009-03-06 CN CN200980111148.XA patent/CN102083497B/zh not_active Expired - Fee Related
- 2009-03-06 US US12/934,625 patent/US8688229B2/en active Active
- 2009-03-06 KR KR1020107024152A patent/KR20110014981A/ko not_active Application Discontinuation
- 2009-03-06 RU RU2010144032/14A patent/RU2499617C2/ru not_active IP Right Cessation
- 2009-03-06 JP JP2011501120A patent/JP5490090B2/ja not_active Expired - Fee Related
- 2009-03-06 WO PCT/EP2009/001595 patent/WO2009118091A1/de active Application Filing
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US4340038A (en) * | 1980-12-15 | 1982-07-20 | Pacesetter Systems, Inc. | Magnetic field concentration means and method for an implanted device |
US5147284A (en) * | 1989-08-17 | 1992-09-15 | Fedorov Svjatoslav N | Device and method for restoration of visual functions |
EP1102609B1 (de) * | 1999-08-07 | 2002-11-06 | MFH Hyperthermiesysteme GmbH | Magnetfeldapplikator zur aufheizung von magnetischen oder magnetisierbaren substanzen oder festkörpern in biologischem gewebe |
DE19939001A1 (de) * | 1999-08-17 | 2001-03-15 | Hans Helmut Rein | Verfahren und Vorrichtung zum Bündeln von Feldlinien eines primären Magnetfeldes zu einem sekundären Magnetfeld erhöhter Feldliniendichte mit spiralenförmig verlaufenden Feldlinien |
WO2001056656A1 (en) * | 2000-02-02 | 2001-08-09 | The Catholic University Of America | Electromagnetic fields used in cancer and other therapies |
US20030045770A1 (en) * | 2001-08-17 | 2003-03-06 | Van Mullekom Arnoldus Petrus | Magnetic field therapy |
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WO2011082796A2 (de) | 2009-12-16 | 2011-07-14 | Magforce Nanotechnologies Ag | Temperaturabhängige aktivierung von katalytischen nukleinsäuren zur kontrollierten wirkstofffreisetzung |
US9517272B2 (en) | 2009-12-16 | 2016-12-13 | Magforce Ag | Temperature dependent activation of catalytic nucleic acids for controlled active substance release |
Also Published As
Publication number | Publication date |
---|---|
ES2371210T3 (es) | 2011-12-28 |
EP2105163A1 (de) | 2009-09-30 |
JP5490090B2 (ja) | 2014-05-14 |
RU2010144032A (ru) | 2012-05-10 |
ATE511883T1 (de) | 2011-06-15 |
RU2499617C2 (ru) | 2013-11-27 |
CN102083497A (zh) | 2011-06-01 |
CN102083497B (zh) | 2014-03-12 |
EP2105163B1 (de) | 2011-06-08 |
JP2011515165A (ja) | 2011-05-19 |
KR20110014981A (ko) | 2011-02-14 |
US20110160515A1 (en) | 2011-06-30 |
US8688229B2 (en) | 2014-04-01 |
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