WO2002025675A1 - Magnet coil - Google Patents

Magnet coil Download PDF

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Publication number
WO2002025675A1
WO2002025675A1 PCT/EP2001/010827 EP0110827W WO0225675A1 WO 2002025675 A1 WO2002025675 A1 WO 2002025675A1 EP 0110827 W EP0110827 W EP 0110827W WO 0225675 A1 WO0225675 A1 WO 0225675A1
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WO
WIPO (PCT)
Prior art keywords
electrical conductors
conductor
coil
magnetic coil
electrical
Prior art date
Application number
PCT/EP2001/010827
Other languages
German (de)
French (fr)
Inventor
Peter Havel
Albrecht Struppler
Original Assignee
Peter Havel
Albrecht Struppler
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 Peter Havel, Albrecht Struppler filed Critical Peter Havel
Priority to AU2001289895A priority Critical patent/AU2001289895A1/en
Publication of WO2002025675A1 publication Critical patent/WO2002025675A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils

Definitions

  • the present invention relates to a magnetic coil, in particular a coil for stimulating nerve cells.
  • Coils are generally used to create an inductor. If a time-varying current flows through the coils, the coils generate a magnetic field surrounding the electrical conductor.
  • Such coils consist of mutually insulated wire turns.
  • These wire windings can consist of solid copper wire or aluminum wire or of a strand and are optionally arranged in one or more turns around a core so that a winding results.
  • the size of the inductance of a coil depends, among other things, on the number, the dimensions and the arrangement of the turns as well as the core that may be present.
  • An object of the present invention is therefore to provide a magnetic coil with which a high inductance, in particular for the activation of nerve tracts, can be generated.
  • this magnetic coil should have dimensions that are as small as possible and enable good focusing of the magnetic field.
  • Another object of the present invention is to provide a magnetic coil that does not heat up too quickly.
  • the magnetic coil should provide at least an inductance of 20 ⁇ H and should not exceed a temperature of 38 ° C. in continuous operation.
  • a magnetic coil with at least one turn is provided, the turn consisting of at least two electrical conductors and at least one conductor having a hollow shape.
  • This at least one conductor with a hollow shape can be used in the context of the invention in order to enable cooling of the coil according to the invention.
  • an exchange takes place in this hollow-shaped conductor, for example of a gas mixture, but advantageously of a special coolant.
  • special oils are preferably used, which are distinguished by their particularly high heat capacity and, moreover, are not electrically conductive.
  • the waste heat generated during operation of the coil can be influenced.
  • the cooling by the conductor with a hollow shape depends, among other things, on the cross section of the hollow shape. This cross-section influences the amount of coolant that flows through the coil in a certain period of time. In addition, the cooling depends on several other parameters, such as the coolant and the flow rate.
  • the magnetic coil has at least one temperature sensor. With the help of this at least one temperature sensor, it is possible to influence the cooling of the coil as a function of the temperature of the magnetic coil.
  • the other conductor of the magnetic coil according to the invention is preferably a ribbon conductor.
  • the dimensions of this ribbon cable are preferably chosen so that the line cross section of the ribbon cable corresponds to that of the waveguide.
  • This arrangement of the at least two electrical conductors has proven to be particularly effective.
  • each of the two electrical conductors acts like a separate coil.
  • the coils can be connected in series so that their magnetic fields add up.
  • This arrangement enables, among other things, a relatively high inductance of the magnetic coil.
  • a coil with a relatively low height can be realized with this arrangement, so that the magnetic coil can be placed relatively close to tissue to be stimulated.
  • a magnetic coil with a relatively small area and thus a relatively precise focusing of the stimulation can be achieved by this arrangement.
  • conductors with the highest possible cable cross sections are used in the context of the present invention.
  • the dimensions of the magnetic coil cannot, however, be chosen to be of any size.
  • the two conductors are preferably arranged so that the two electrical conductors cannot touch directly. This can be achieved, for example, with a layer of varnish on the conductors.
  • the at least two electrical conductors which are spirally wound into one another form a surface.
  • the electrical conductors are next to each other.
  • the surface is preferably flat, but within the scope of the present invention it can also be curved, for example in the shape of a bowl.
  • the magnetic coil consists of at least two coils, each of the two coils consisting of at least two electrical conductors which are spirally wound into one another and form a surface.
  • the at least two coils are preferably arranged in such a way that the at least two coils lie in parallel surfaces and the center points of the coils lie almost one above the other.
  • parallel means that the radii of the coils are arranged in parallel. This arrangement enables a magnetic coil in which, as it were, four magnetic coils interact.
  • two electrical conductors act like two individual coils.
  • the parallel arrangement of these two coils means that four electrical conductors act like four individual coils.
  • the interaction of these four electrical conductors provides a particularly high inductance which can be arranged particularly close to the tissue to be stimulated and which enables particularly good focusing of the stimulation.
  • the electrical conductors in the adjacent surfaces preferably have an opposite direction of rotation and the current flow in the electrical conductors have the same direction of rotation.
  • the electrical conductors in the upper surface spread clockwise from the outside inward
  • the electrical conductors in the lower adjacent surface preferably spread in that other direction, i.e. from the outside inwards counter-clockwise.
  • the electric current clockwise in both areas, namely in the upper area from the outside in and in the lower area from the inside out.
  • the parallel coils are connected in series.
  • the electrical conductors of one coil are accordingly connected to the electrical conductors of another coil. This is preferably achieved in that the ends of the electrical conductors which are located inside the coil are connected to corresponding ends of the electrical conductors which are located inside an adjacent coil.
  • this connection of the conductors can also be achieved if the electrical conductors in one area are not connected to the electrical conductors of an adjacent area, but instead each consist of one conductor, that is to say are parts of a common conductor.
  • This arrangement has proven to be particularly advantageous for the manufacture of the coil according to the invention, since it enables a particularly good connection to be made between the two adjacent surfaces.
  • the electrical conductors in the surfaces are preferably operated in such a way that their respective polarity causes an attraction to one another. As a result, the coil is held together solely by the polarity.
  • a ribbon conductor and a conductor with a hollow shape are preferably used for the two electrical conductors.
  • An electrically insulating layer is preferably placed between these electrical conductors.
  • the dimensions of the two conductors are preferably selected so that the line cross section of the two conductors is particularly advantageous, that is, a low resistance is provided in the smallest possible space. This can For example, the case if the line cross-section of the two conductors is the same size.
  • this conductor can, as already described above, be used for cooling the magnetic coil according to the invention.
  • this conductor can, as already described above, be used for cooling the magnetic coil according to the invention.
  • the use of a ribbon cable as a second conductor is particularly advantageous. If, according to the invention, a ribbon cable is arranged between two turns of waveguides, the cooling emanating from the waveguide can reach the surface of the ribbon conductor particularly well.
  • a method for producing a magnetic coil wherein at least two electrical conductors are spirally wound into one another. These at least two electrical conductors are preferably wound so that they lie in one area.
  • the method is particularly preferred when at least four electrical conductors are wound in such a way that at least two electrical conductors are spirally wound one inside the other so that they are located in one surface.
  • the at least two surfaces are preferably arranged in parallel and more preferably connected in series, preferably over the inner ends of adjacent surfaces.
  • a flat conductor and a conductor with a cavity are preferably used and an electrically insulating layer is arranged between the conductors.
  • an electrically insulating layer is arranged between the conductors.
  • the magnetic coil according to the invention is preferably arranged in a housing made of an electrically non-conductive material.
  • the material is selected so that the magnetic field generated by the magnetic coil can act as freely as possible on the tissue to be stimulated.
  • the housing on the side facing the tissue is preferably as thin as possible.
  • the housing is preferably such that it can hold the conductors in a fixed position when the forces occur. There is also preferably a vacuum within the housing.
  • FIGS. 1 to 5 An embodiment of the coil according to the invention is described with reference to FIGS. 1 to 5, wherein
  • FIG. 1 shows a plan view of an upper part of a coil according to the invention
  • FIG. 2 shows a plan view of a lower part of a coil according to the invention
  • FIG. 3 shows a cross section of an embodiment of a coil according to the invention
  • FIG. 4 a circuit diagram of an embodiment of an invention 5 shows an example of a transition of two electrical conductors from one surface into an adjacent surface.
  • 1 shows a top view of an upper part of an embodiment of the magnetic coil 1 according to the invention.
  • This upper part of the magnetic coil 1 consists of concentric turns of two electrical conductors 2, 3.
  • the electrical conductor 2 has a hollow shape.
  • the electrical conductor 3 is a ribbon conductor.
  • These two electrical conductors 2, 3 are arranged concentrically so that the two electrical conductors 2, 3 alternate radially from the center of the coil, so that between two windings of one of the two electrical conductors 2, 3 a winding of the other of the two electrical Head 2, 3 is located. There is an electrically insulating layer between the two electrical conductors 2, 3.
  • the electrical conductor 2 which has a hollow shape, leaves the concentric path of the coil at the outer edge and is connected to a pump device 9. Using this pump device 9, a coolant is pumped through the hollow electrical conductor 2.
  • FIG. 2 shows a plan view of a lower part of an embodiment of a magnet coil 1 according to the invention.
  • This lower part of the magnetic coil 1 also consists of concentric turns of two electrical conductors 4, 5.
  • the electrical conductor 4 has a hollow shape.
  • the electrical conductor 5 is a ribbon conductor. These two electrical conductors 4, 5 are arranged concentrically so that the two electrical conductors 4, 5 alternate radially from the center of the coil, so that between two windings one of the two electrical conductors 4, 5 is a winding of the other of the two electrical Head 4, 5 is located.
  • This lower part differs from the upper part described in FIG. 1 by a different winding direction of the electrical conductors.
  • the upper part is connected at the conductor ends 6 and 7 to the conductor ends 6 'and 7' of the lower part.
  • Fig. 3 shows a cross section through an embodiment of a coil according to the invention.
  • the magnetic coil consists of two surfaces A and B.
  • the two electrical conductors 2, 3 and 4, 5 are located in each of the two surfaces.
  • Insulating layers 8 are arranged between the conductors and electrically isolate the electrical conductors 2, 3, 4, 5 from one another.
  • the magnetic coil 1 consists of four electrical conductors 2, 3, 4, 5, two electrical conductors each being arranged in a surface A, B.
  • the four electrical conductors 2, 3, 4, 5 are connected in series.
  • One end of the electrical conductor 3 in the upper surface A is connected to one end of the electrical conductor 5 in the lower surface B.
  • the two electrical conductors 3 and 5 are made from a ribbon conductor, one half of the ribbon conductor being arranged in the upper surface A and the second half of the ribbon conductor being arranged in the lower surface B.
  • the two waveguides 2, 4 are also connected in series in the same way.
  • the electrical conductor 3 and the electrical conductor 5, or the electrical conductor 2 and the electrical conductor 4 can each consist of a conductor. This has proven to be particularly advantageous in the course of the manufacture of the magnetic coil.
  • the two electrical conductors 3, 5 are connected to one another in the area B with the two electrical conductors 2, 4 in such a way that this results in a series connection of the four electrical conductors and the magnetic fields add up.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Magnetic Treatment Devices (AREA)

Abstract

The invention relates to a magnet coil (1) with at least one winding, comprising at least two electrical conductors (2, 3), at least one conductor (2) with a hollow form and a magnet coil (1) with at least one winding. The magnet coil (1) comprises at least two spirally inter-wound electrical conductors (2, 3). The invention further relates to a method for the production of a magnet coil (1), whereby in said method at least two electrical conductors are spirally inter-wound.

Description

Magnetspule solenoid
Die vorliegende Erfindung betrifft eine Magnetspule, insbesondere eine Spule zur Stimulation von Nervenzellen.The present invention relates to a magnetic coil, in particular a coil for stimulating nerve cells.
Spulen werden grundsätzlich für die Erzeugung einer Induktivität verwendet. Wenn durch die Spulen ein zeitlich veränderlicher Strom fließt, erzeugen die Spulen ein den elektrischen Leiter umgebendes magnetisches Feld.Coils are generally used to create an inductor. If a time-varying current flows through the coils, the coils generate a magnetic field surrounding the electrical conductor.
Solche Spulen bestehen aus gegeneinander isolierten Drahtwindungen. Diese Drahtwindungen können aus massivem Kupferdraht oder auch Aluminiumdraht oder aus einer Litze bestehen und sind in einer oder mehreren Windungen gegebenenfalls um einen Kern so angeordnet, daß sich eine Wicklung ergibt. Die Größe der Induktivität einer Spule hängt unter anderem von der Anzahl, den Abmessungen und der Anordnung der Windungen sowie dem eventuell vorhandenen Kern ab.Such coils consist of mutually insulated wire turns. These wire windings can consist of solid copper wire or aluminum wire or of a strand and are optionally arranged in one or more turns around a core so that a winding results. The size of the inductance of a coil depends, among other things, on the number, the dimensions and the arrangement of the turns as well as the core that may be present.
Im Stand der Technik sind zahlreiche verschiedene Arten von Spulen bekannt, die sich im wesentlichen durch unterschiedliche Wicklungen, also unterschiedliche Anordnungen der Windungen, unterscheiden. Dabei werden unter anderem einlagige und mehrlagige Spulen unterschieden. Des weiteren wird unterschieden, ob zwischen den einzelnen Windungen ein Windungsabstand vorhanden ist. Ein weiteres Unterscheidungsmerkmal ist das Vorhandensein von einem Kern.Numerous different types of coils are known in the prior art, which differ essentially by different windings, that is to say different arrangements of the windings. A distinction is made between single-layer and multi-layer coils. A further distinction is made as to whether there is a turn spacing between the individual turns. Another distinguishing feature is the presence of a core.
Diese Spulen haben grundsätzlich eine von dem ohmschen Widerstand und von den Wirbelstromverlusten abhängige Verlustleistung, die die Verwendung der Spule unter anderem im Hinblick auf deren Ab Wärmeerzeugung beeinflußt. Eine Aufgabe der vorliegenden Erfindung ist es deshalb eine Magnetspule bereitzustellen mit der eine hohe Induktivität, insbesondere zur Aktivierung von Nervenbahnen, erzeugt werden kann. Diese Magnetspule soll darüber hinaus noch möglichst kleine Abmessungen aufweisen und eine gute Fokussierung des magnetischen Feldes ermöglichen. Eine weitere Aufgabe der vorliegenden Erfindung ist es eine Magnetspule bereitzustellen, die sich nicht zu schnell erwärmt. Insbesondere soll die Magnetspule mindestens eine Induktivität von 20 μH bereitstellen und im Dauerbetrieb eine Temperatur von 38°C nicht überschreiten.These coils generally have a power loss which is dependent on the ohmic resistance and on the eddy current losses and which influences the use of the coil, inter alia with regard to its heat generation. An object of the present invention is therefore to provide a magnetic coil with which a high inductance, in particular for the activation of nerve tracts, can be generated. In addition, this magnetic coil should have dimensions that are as small as possible and enable good focusing of the magnetic field. Another object of the present invention is to provide a magnetic coil that does not heat up too quickly. In particular, the magnetic coil should provide at least an inductance of 20 μH and should not exceed a temperature of 38 ° C. in continuous operation.
Erfindungsgemäß wird eine Magnetspule mit mindestens einer Windung bereitgestellt, wobei die Windung aus mindestens zwei elektrischen Leitern besteht und wobei mindestens ein Leiter eine Hohlform aufweist.According to the invention, a magnetic coil with at least one turn is provided, the turn consisting of at least two electrical conductors and at least one conductor having a hollow shape.
Dieser mindestens eine Leiter mit einer Hohlform kann im Rahmen der Erfindung verwendet werden, um die Kühlung der erfindungsgemäßen Spule zu ermöglichen. Zu diesem Zweck findet in diesem Leiter mit Hohlform ein Austausch, beispielsweise von einem Gasgemisch, vorteilhafterweise aber von einem speziellen Kühlmittel, statt. Hierfür werden vorzugsweise spezielle Öle verwendet, die sich durch ihre besonders hohe Wärmekapazität auszeichnen und darüber hinaus nicht elektrisch leitend sind.This at least one conductor with a hollow shape can be used in the context of the invention in order to enable cooling of the coil according to the invention. For this purpose, an exchange takes place in this hollow-shaped conductor, for example of a gas mixture, but advantageously of a special coolant. For this purpose, special oils are preferably used, which are distinguished by their particularly high heat capacity and, moreover, are not electrically conductive.
Mit Hilfe dieser Kühlung kann die beim Betrieb der Spule entstehende Abwärme beeinflußt werden. Dabei hängt die Kühlung durch den Leiter mit Hohlform unter anderem von dem Querschnitt der Hohlform ab. Über diesen Querschnitt wird die Menge des Kühlmittel beeinflußt, die in einer bestimmten Zeitspanne durch die Spule fließt. Darüber hinaus hängt die Kühlung noch von mehreren anderen Parametern ab, wie zum Beispiel dem Kühlmittel und der Durchflußgeschwindigkeit. In einer bevorzugten Ausführungsform der vorliegenden Erfindung weist die Magnetspule mindestens einen Temperatursensor auf. Mit Hilfe dieses mindestens einen Temperatursensors ist es möglich die Kühlung der Spule in Abhängigkeit von der Temperatur der Magnetspule zu beeinflussen.With the help of this cooling, the waste heat generated during operation of the coil can be influenced. The cooling by the conductor with a hollow shape depends, among other things, on the cross section of the hollow shape. This cross-section influences the amount of coolant that flows through the coil in a certain period of time. In addition, the cooling depends on several other parameters, such as the coolant and the flow rate. In a preferred embodiment of the present invention, the magnetic coil has at least one temperature sensor. With the help of this at least one temperature sensor, it is possible to influence the cooling of the coil as a function of the temperature of the magnetic coil.
Bei dem anderen Leiter der erfindungsgemäßen Magnetspule handelt es sich vorzugsweise um einen Flachbandleiter. Die Abmessungen dieses Flachbandleiters werden vorzugsweise so gewählt, daß der Leitungsquerschnitt des Flachbandleiters dem des Hohlleiters entspricht.The other conductor of the magnetic coil according to the invention is preferably a ribbon conductor. The dimensions of this ribbon cable are preferably chosen so that the line cross section of the ribbon cable corresponds to that of the waveguide.
Im Rahmen der vorliegenden Erfindung wird auch eine . Magnetspule mit mindestens einer Windung beansprucht, wobei die Magnetspule aus mindestens zwei ineinander spiralförmig gewickelten elektrischen Leitern besteht. Diese Anordnung der mindestens zwei elektrischen Leiter hat sich als besonders effektiv herausgestellt. In dieser Anordnung wirkt jeder der beiden elektrischen Leiter wie eine separate Spule. Dabei können die Spulen so in Serie geschaltet werden, daß sich ihre Magnetfelder addieren. Durch diese Anordnung wird unter anderem eine relativ hohe Induktivität der Magnetspule ermöglicht. Darüber hinaus kann mit dieser Anordnung eine Spule mit relativ geringer Höhe realisiert werden, so daß die Magnetspule relativ nahe an zu stimulierendem Gewebe plaziert werden kann. Außerdem kann durch diese Anordnung eine Magnetspule mit einer relativ geringen Fläche und damit eine relativ genaue Fokussierung der Stimulation erreicht werden.Within the scope of the present invention, a. Magnetic coil claimed with at least one turn, wherein the magnetic coil consists of at least two spiral-wound electrical conductors. This arrangement of the at least two electrical conductors has proven to be particularly effective. In this arrangement, each of the two electrical conductors acts like a separate coil. The coils can be connected in series so that their magnetic fields add up. This arrangement enables, among other things, a relatively high inductance of the magnetic coil. In addition, a coil with a relatively low height can be realized with this arrangement, so that the magnetic coil can be placed relatively close to tissue to be stimulated. In addition, a magnetic coil with a relatively small area and thus a relatively precise focusing of the stimulation can be achieved by this arrangement.
Grundsätzlich werden im Rahmen der vorliegenden Erfindung Leiter mit möglichst hohen Leitungsquerschnitten verwendet. In Abhängigkeit von der Verwendung der Magnetspule können die Abmessungen der Magnetspule allerdings nicht beliebig groß gewählt werden. Dabei sind die beiden Leiter vorzugsweise so angeordnet, daß sich die beiden elektrischen Leiter nicht direkt berühren können. Dies kann beispielsweise durch eine Lackschicht auf den Leitern erreicht werden.Basically, conductors with the highest possible cable cross sections are used in the context of the present invention. Depending on the use of the magnetic coil, the dimensions of the magnetic coil cannot, however, be chosen to be of any size. The two conductors are preferably arranged so that the two electrical conductors cannot touch directly. This can be achieved, for example, with a layer of varnish on the conductors.
In einer bevorzugten Ausführungsform der erfindungsgemäßen Magnetspule bilden die mindestens zwei ineinander spiralförmig gewickelten elektrischen Leiter eine Fläche. Die elektrischen Leiter liegen also nebeneinander. Dabei ist die Fläche vorzugsweise eben, sie kann allerdings im Rahmen der vorliegenden Erfindung auch gebogen, beispielsweise schüsseiförmig, ausgestaltet sein.In a preferred embodiment of the magnetic coil according to the invention, the at least two electrical conductors which are spirally wound into one another form a surface. The electrical conductors are next to each other. The surface is preferably flat, but within the scope of the present invention it can also be curved, for example in the shape of a bowl.
In einer weiter bevorzugten Ausführungsform besteht die Magnetspule aus mindestens zwei Spulen, wobei jede der beiden Spulen aus mindestens zwei ineinander spiralförmig gewickelten elektrischen Leitern, die eine Fläche bilden, besteht. Dabei sind die mindestens zwei Spulen vorzugsweise so angeordnet, daß die mindestens zwei Spulen in parallelen Flächen und die Mittelpunkte der Spulen nahezu übereinander liegen. Parallel bedeutet in diesem Zusammenhang, daß die Radien der Spulen jeweils parallel angeordnet sind. Durch diese Anordnung wird eine Magnetspule ermöglicht, in der quasi vier Magnetspulen aufeinander einwirken. In jeder der beiden parallelen Flächen wirken zwei elektrische Leiter wie zwei einzelne Spulen aufeinander. Durch die parallele Anordnung dieser zwei Spulen wirken vier elektrische Leiter wie vier einzelne Spulen aufeinander. Dabei wird aus dem Zusammenwirken dieser vier elektrischen Leiter eine besonders hohe Induktivität bereitgestellt, welche besonders nah an zu stimulierendem Gewebe angeordnet werden kann und mit der eine besonders gute Fokussierung der Stimulation ermöglicht wird.In a further preferred embodiment, the magnetic coil consists of at least two coils, each of the two coils consisting of at least two electrical conductors which are spirally wound into one another and form a surface. The at least two coils are preferably arranged in such a way that the at least two coils lie in parallel surfaces and the center points of the coils lie almost one above the other. In this context, parallel means that the radii of the coils are arranged in parallel. This arrangement enables a magnetic coil in which, as it were, four magnetic coils interact. In each of the two parallel surfaces, two electrical conductors act like two individual coils. The parallel arrangement of these two coils means that four electrical conductors act like four individual coils. The interaction of these four electrical conductors provides a particularly high inductance which can be arranged particularly close to the tissue to be stimulated and which enables particularly good focusing of the stimulation.
Vorzugsweise weisen die elektrischen Leiter in den benachbarten Flächen einen umgekehrten Drehsinn und der Stromfluß in den elektrischen Leitern denselben Drehsinn auf. Während beispielsweise die elektrischen Leiter in der oberen Fläche sich von außen nach innen mit dem Uhrzeigersinn ausbreiten, breiten sich die elektrischen Leiter in der unteren benachbarten Fläche vorzugsweise in der anderen Richtung, also von außen nach innen gegen den Uhrzeigersinn, aus. Der elektrische Strom allerdings in beiden Flächen mit dem Uhrzeigersinn, in der oberen Fläche nämlich von außen nach innen und in der unteren Fläche von innen nach außen.The electrical conductors in the adjacent surfaces preferably have an opposite direction of rotation and the current flow in the electrical conductors have the same direction of rotation. For example, while the electrical conductors in the upper surface spread clockwise from the outside inward, the electrical conductors in the lower adjacent surface preferably spread in that other direction, i.e. from the outside inwards counter-clockwise. The electric current, however, clockwise in both areas, namely in the upper area from the outside in and in the lower area from the inside out.
Gemäß der vorliegenden Erfindung sind die parallelen Spulen in Reihe geschaltet. Die elektrischen Leiter einer Spule sind also mit den elektrischen Leitern einer anderen Spule entsprechend verbunden. Dies wird vorzugsweise dadurch erreicht, daß die Enden der elektrischen Leiter, die im inneren der Spule liegen, mit entsprechenden Enden der elektrischen Leiter, die im inneren einer benachbarten Spule liegen, verbunden sind.According to the present invention, the parallel coils are connected in series. The electrical conductors of one coil are accordingly connected to the electrical conductors of another coil. This is preferably achieved in that the ends of the electrical conductors which are located inside the coil are connected to corresponding ends of the electrical conductors which are located inside an adjacent coil.
Im Rahmen der vorliegenden Erfindung kann diese Verbindung der Leiter allerdings auch erreicht werden, wenn die elektrischen Leiter in der einen Fläche nicht mit den elektrischen Leitern einer benachbarten Fläche verbunden sind, sondern jeweils aus einem Leiter bestehen, also Teile eines gemeinsamen Leiters sind. Diese Anordnung hat sich gerade für die Fertigung der erfindungsgemäßen Spule als besonders vorteilhaft herausgestellt, da dadurch eine besonders gute Verbindung zwischen den beiden benachbarten Flächen hergestellt werden kann.In the context of the present invention, however, this connection of the conductors can also be achieved if the electrical conductors in one area are not connected to the electrical conductors of an adjacent area, but instead each consist of one conductor, that is to say are parts of a common conductor. This arrangement has proven to be particularly advantageous for the manufacture of the coil according to the invention, since it enables a particularly good connection to be made between the two adjacent surfaces.
Die elektrischen Leiter in den Flächen werden vorzugsweise so betrieben, daß ihre jeweilige Polung eine Anziehung untereinander verursacht. Dadurch wird allein durch die Polung ein Zusammenhalt der Spule erzeugt.The electrical conductors in the surfaces are preferably operated in such a way that their respective polarity causes an attraction to one another. As a result, the coil is held together solely by the polarity.
Vorzugsweise werden für die beiden elektrischen Leiter ein Flachbandleiter und ein Leiter mit einer Hohlform verwendet. Zwischen diesen elektrischen Leitern wird vorzugsweise eine elektrisch isolierende Schicht plaziert. Dabei werden die Abmessungen der beiden Leiter vorzugsweise so gewählt, daß der Leitungsquerschnitt der beiden Leiter besonders vorteilhaft ist, also ein niedriger Widerstand auf möglichst kleinem Raum bereitgestellt wird. Dies kann beispielsweise der Fall sein, wenn der Leitungsquerschnitt der beiden Leiter gleich groß ist.A ribbon conductor and a conductor with a hollow shape are preferably used for the two electrical conductors. An electrically insulating layer is preferably placed between these electrical conductors. The dimensions of the two conductors are preferably selected so that the line cross section of the two conductors is particularly advantageous, that is, a low resistance is provided in the smallest possible space. This can For example, the case if the line cross-section of the two conductors is the same size.
Durch die Verwendung eines Leiters mit einer Hohlform kann, wie bereits oben beschrieben, dieser Leiter zur Kühlung der erfindungsgemäßen Magnetspule verwendet werden. In diesem Zusammenhang ist die Verwendung eines Flachbandleiters als zweiter Leiter besonders vorteilhaft. Wird ein Flachbandleiter erfindungsgemäß zwischen zwei Windungen von Hohlleitern angeordnet, kann die von dem Hohleiter ausgehende Kühlung die Oberfläche des Fachbandleiters besonders gut erreichen.By using a conductor with a hollow shape, this conductor can, as already described above, be used for cooling the magnetic coil according to the invention. In this context, the use of a ribbon cable as a second conductor is particularly advantageous. If, according to the invention, a ribbon cable is arranged between two turns of waveguides, the cooling emanating from the waveguide can reach the surface of the ribbon conductor particularly well.
Durch die Verwendung eines Flachbandleiters werden des weiteren geringe Wirbelstromverluste sichergestellt.By using a ribbon cable, low eddy current losses are also ensured.
Im Rahmen der vorliegenden Erfindung wir außerdem ein Verfahren zur Herstellung einer Magnetspule beansprucht, wobei mindestens zwei elektrische Leiter ineinander spiralförmig gewickelt werden. Diese mindestens zwei elektrischen Leiter werden vorzugsweise so gewickelt, daß sie in einer Fläche liegen.Within the scope of the present invention, a method for producing a magnetic coil is also claimed, wherein at least two electrical conductors are spirally wound into one another. These at least two electrical conductors are preferably wound so that they lie in one area.
Besonders bevorzugt ist das Verfahren, wenn mindestens vier elektrische Leiter so gewickelt werden, daß mindestens jeweils zwei elektrische Leiter ineinander spiralförmig gewickelt werden, so daß sie sich in einer Fläche befinden. Dabei sind die mindestens zwei Flächen vorzugsweise parallel angeordnet und weiter bevorzugt in Serie geschaltet und zwar vorzugsweise über die inneren Enden von benachbarten Flächen.The method is particularly preferred when at least four electrical conductors are wound in such a way that at least two electrical conductors are spirally wound one inside the other so that they are located in one surface. The at least two surfaces are preferably arranged in parallel and more preferably connected in series, preferably over the inner ends of adjacent surfaces.
Im Rahmen dieses Verfahrens werden vorzugsweise ein Flachleiter und ein Leiter mit Hohlraum verwendet und zwischen den Leitern eine elektrisch isolierende Schicht angeordnet. Im Rahmen der vorliegenden Erfindung wird auch die Verwendung einer der oben beschriebenen Magnetspulen zur magnetischen Stimulation von Körperteilen beansprucht. Das Ziel ist dabei, eine Depolarisierung von Nervenfasern in biologischen Geweben zur Induktion von Bewegungen zu ermöglichen. Dafür werden Spannungen von ca. 3kV und Ströme von ca. lOkA benötigt.In the context of this method, a flat conductor and a conductor with a cavity are preferably used and an electrically insulating layer is arranged between the conductors. In the context of the present invention, the use of one of the magnetic coils described above for the magnetic stimulation of body parts is also claimed. The goal is to enable the depolarization of nerve fibers in biological tissues to induce movement. This requires voltages of approx. 3kV and currents of approx. 10kA.
Die erfindungsgemäße Magnetspule wird vorzugsweise in einem Gehäuse aus einem elektrisch nicht leitenden Material angeordnet. Dabei wird das Material allerdings so gewählt, daß das durch die Magnetspule erzeugte Magnetfeld möglichst ungehindert auf das zu stimulierende Gewebe einwirken kann. Zu diesem Zweck ist das Gehäuse an der dem Gewebe zugewandten Seite vorzugsweise möglichst dünn. Des weiteren ist das Gehäuse vorzugsweise so beschaffen, daß es die Leiter bei den auftretenden Kräften in einer festen Position halten kann. Innerhalb des Gehäuses befindet sich außerdem vorzugsweise ein Vakuum.The magnetic coil according to the invention is preferably arranged in a housing made of an electrically non-conductive material. However, the material is selected so that the magnetic field generated by the magnetic coil can act as freely as possible on the tissue to be stimulated. For this purpose, the housing on the side facing the tissue is preferably as thin as possible. Furthermore, the housing is preferably such that it can hold the conductors in a fixed position when the forces occur. There is also preferably a vacuum within the housing.
Ein Ausführungsbeispiel der erfindungsgemäßen Spule wird anhand der Fig. 1 bis 5 beschrieben, wobeiAn embodiment of the coil according to the invention is described with reference to FIGS. 1 to 5, wherein
Fig. 1 eine Draufsicht auf einen oberen Teil einer erfindungsgemäßen Spule zeigt, Fig. 2 eine Draufsicht auf einen unteren Teil einer erfindungsgemäßen Spule zeigt, Fig. 3 einen Querschnitt einer Ausführungsform einer erfϊndungsgemäßen Spule zeigt, Fig. 4: einen Schaltplan einer Ausführungsform einer erfindungs gemäßen Spule zeigt, und Fig. 5: ein Beispiel für einen Übergang zweier elektrischer Leiter von einer Fläche in eine benachbarte Fläche zeigt. Fig. 1 zeigt eine Draufsicht auf einen oberen Teil einer Ausführungsform der erfindungsgemäßen Magnetspule 1. Dieser obere Teil der Magnetspule 1 besteht aus konzentrischen Windungen von zwei elektrischen Leitern 2, 3. In diesem Ausführungsbeispiel weist der elektrische Leiter 2 eine Hohlform auf. Der elektrische Leiter 3 ist in diesem Ausführungsbeispiel ein Flachbandleiter. Diese beiden elektrischen Leiter 2, 3 sind so konzentrisch angeordnet, daß sich die beiden elektrischen Leiter 2, 3 vom Zentrum der Spule aus radial abwechseln, so daß sich zwischen zwei Wicklungen eines der beiden elektrischen Leiter 2, 3 eine Wicklung des anderen der beiden elektrischen Leiter 2, 3 befindet. Zwischen den beiden elektrischen Leitern 2, 3 befindet sich eine elektrisch isolierende Schicht.1 shows a plan view of an upper part of a coil according to the invention, FIG. 2 shows a plan view of a lower part of a coil according to the invention, FIG. 3 shows a cross section of an embodiment of a coil according to the invention, FIG. 4: a circuit diagram of an embodiment of an invention 5 shows an example of a transition of two electrical conductors from one surface into an adjacent surface. 1 shows a top view of an upper part of an embodiment of the magnetic coil 1 according to the invention. This upper part of the magnetic coil 1 consists of concentric turns of two electrical conductors 2, 3. In this exemplary embodiment, the electrical conductor 2 has a hollow shape. In this exemplary embodiment, the electrical conductor 3 is a ribbon conductor. These two electrical conductors 2, 3 are arranged concentrically so that the two electrical conductors 2, 3 alternate radially from the center of the coil, so that between two windings of one of the two electrical conductors 2, 3 a winding of the other of the two electrical Head 2, 3 is located. There is an electrically insulating layer between the two electrical conductors 2, 3.
Der elektrische Leiter 2, der eine Hohlform aufweist, verläßt am äußeren Rand die konzentrische Bahn der Spule und ist an einer Pumpenvorrichtung 9 angeschlossen. Unter Verwendung dieser Pumpenvorrichtung 9 wird ein Kühlmittel durch den hohlförmigen elektrischen Leiter 2 gepumpt.The electrical conductor 2, which has a hollow shape, leaves the concentric path of the coil at the outer edge and is connected to a pump device 9. Using this pump device 9, a coolant is pumped through the hollow electrical conductor 2.
In Fig. 2 wird eine Draufsicht auf einen unteren Teil einer Ausführungsform einer erfindungsgemäßen Magnetspule 1 gezeigt. Dieser untere Teil der Magnetspule 1 besteht auch aus konzentrischen Windungen von zwei elektrischen Leitern 4, 5. In diesem Ausführungsbeispiel weist der elektrische Leiter 4 eine Hohlform auf. Der elektrische Leiter 5 ist in diesem Ausführungsbeispiel ein Flachbandleiter. Diese beiden elektrischen Leiter 4, 5 sind so konzentrisch angeordnet, daß sich die beiden elektrischen Leiter 4, 5 vom Zentrum der Spule aus radial abwechseln, so daß sich zwischen zwei Wicklungen eines der beiden elektrischen Leiter 4, 5 eine Wicklung des anderen der beiden elektrischen Leiter 4, 5 befindet. Dieser untere Teil unterscheidet sich von dem in Fig. 1 beschriebenen oberen Teil durch eine andere Wicklungsrichtung der elektrischen Leiter. Der obere Teil ist an den Leiterenden 6 und 7 mit den Leiterenden 6' und 7' des unteren Teils verbunden.2 shows a plan view of a lower part of an embodiment of a magnet coil 1 according to the invention. This lower part of the magnetic coil 1 also consists of concentric turns of two electrical conductors 4, 5. In this exemplary embodiment, the electrical conductor 4 has a hollow shape. In this exemplary embodiment, the electrical conductor 5 is a ribbon conductor. These two electrical conductors 4, 5 are arranged concentrically so that the two electrical conductors 4, 5 alternate radially from the center of the coil, so that between two windings one of the two electrical conductors 4, 5 is a winding of the other of the two electrical Head 4, 5 is located. This lower part differs from the upper part described in FIG. 1 by a different winding direction of the electrical conductors. The upper part is connected at the conductor ends 6 and 7 to the conductor ends 6 'and 7' of the lower part.
Fig. 3 zeigt einen Querschnitt durch eine Ausführungsform einer erfindungsgemäßen Spule. Dabei besteht die Magnetspule aus zwei Flächen A und B. In jeder der beiden Flächen befinden sich die beiden elektrischen Leiter 2, 3 und 4, 5. Zwischen den Leitern sind Isolierschichten 8 angeordnet, die die elektrischen Leiter 2, 3, 4, 5 gegeneinander elektrisch isolieren.Fig. 3 shows a cross section through an embodiment of a coil according to the invention. The magnetic coil consists of two surfaces A and B. The two electrical conductors 2, 3 and 4, 5 are located in each of the two surfaces. Insulating layers 8 are arranged between the conductors and electrically isolate the electrical conductors 2, 3, 4, 5 from one another.
Fig. 4 zeigt ein Beispiel für einen Schaltplan einer erfindungsgemäßen Magnetspule. In diesem Beispiel besteht die Magnetspule 1 aus vier elektrischen Leitern 2, 3, 4, 5, wobei jeweils zwei elektrische Leiter in einer Fläche A, B angeordnet sind. Dabei sind die vier elektrischen Leiter 2, 3, 4, 5 in Reihe geschaltet. Das eine Ende des elektrischen Leiters 3 in der oberen Fläche A ist mit einem Ende des elektrischen Leiters 5 in der unteren Fläche B verbunden. Die beiden elektrischen Leiter 3 und 5 sind in diesem Beispiel aus einem Flachbandleiter hergestellt, wobei die eine Hälfte des Flachbandleiters in der oberen Fläche A angeordnet ist und die zweite Hälfte des Flachbandleiters in der unteren Fläche B angeordnet ist. In dem vorliegenden Beispiel sind auch die beiden Hohlleiter 2, 4 auf gleiche Weise in Reihe geschaltet.4 shows an example of a circuit diagram of a magnet coil according to the invention. In this example, the magnetic coil 1 consists of four electrical conductors 2, 3, 4, 5, two electrical conductors each being arranged in a surface A, B. The four electrical conductors 2, 3, 4, 5 are connected in series. One end of the electrical conductor 3 in the upper surface A is connected to one end of the electrical conductor 5 in the lower surface B. In this example, the two electrical conductors 3 and 5 are made from a ribbon conductor, one half of the ribbon conductor being arranged in the upper surface A and the second half of the ribbon conductor being arranged in the lower surface B. In the present example, the two waveguides 2, 4 are also connected in series in the same way.
Dabei können im Rahmen der vorliegenden Erfindung der elektrische Leiter 3 und der elektrische Leiter 5, beziehungsweise der elektrische Leiter 2 und der elektrische Leiter 4 jeweils aus einem Leiter bestehen. Dieses hat sich im Rahmen der Herstellung der Magnetspule als besonders vorteilhaft herausgestellt.In the context of the present invention, the electrical conductor 3 and the electrical conductor 5, or the electrical conductor 2 and the electrical conductor 4 can each consist of a conductor. This has proven to be particularly advantageous in the course of the manufacture of the magnetic coil.
Die beiden elektrischen Leiter 3, 5 werden in dem vorliegenden Beispiel mit den beiden elektrischen Leitern 2, 4 in der Fläche B so miteinander verbunden, daß dies eine Reihenschaltung der vier elektrischen Leiter ergibt und sich die Magnetfelder summieren.In the present example, the two electrical conductors 3, 5 are connected to one another in the area B with the two electrical conductors 2, 4 in such a way that this results in a series connection of the four electrical conductors and the magnetic fields add up.
Fig. 5 zeigt den Übergang zweier elektrischer Leiter von einer Fläche A in eine5 shows the transition of two electrical conductors from one area A to one
Fläche B. Dabei sind die beiden elektrischen Leiter der Spule in der Fläche A in diesem Beispiel von innen nach außen mit dem Uhrzeigersinn gewickelt. An dem Übergang von der Fläche A in die Fläche B behalten die beiden elektrischen Leiter ihre Drehrichtung bei, so daß sich diese beiden Leiter dann in der Fläche B gegen den Uhrzeigersinn von innen nach außen erstrecken. Surface B. In this example, the two electrical conductors of the coil in surface A are wound clockwise from the inside to the outside. At the transition from area A to area B, the two keep electrical Conductor their direction of rotation, so that these two conductors then extend in the area B counterclockwise from the inside to the outside.

Claims

Patentansprüche claims
1. Magnetspule (1) mit mindestens einer Windung, dadurch gekennzeichnet, daß die Windung aus mindestens zwei elektrischen Leitern (2, 3) besteht, wobei mindestens ein Leiter (2) eine Hohlform aufweist.1. Magnetic coil (1) with at least one turn, characterized in that the turn consists of at least two electrical conductors (2, 3), at least one conductor (2) having a hollow shape.
2. Magnetspule (1) gemäß Anspruch 1, dadurch gekennzeichnet, daß der mindestens eine Leiter (2) mit einer Hohlform eine Kühlflüssigkeit beinhaltet.2. Magnetic coil (1) according to claim 1, characterized in that the at least one conductor (2) with a hollow shape contains a cooling liquid.
3. Magnetspule (1) mit mindestens einer Windung, dadurch gekennzeichnet, daß die Magnetspule (1) aus mindestens zwei ineinander spiralförmig gewickelten elektrischen Leitern (2, 3) besteht.3. solenoid coil (1) with at least one turn, characterized in that the solenoid coil (1) consists of at least two spirally wound electrical conductors (2, 3).
4. Magnetspule (1) gemäß Anspruch 3, dadurch gekennzeichnet, daß die mindestens zwei ineinander spiralförmig gewickelten elektrischen Leiter (2, 3) eine Fläche (A) bilden.4. Magnetic coil (1) according to claim 3, characterized in that the at least two helically wound electrical conductors (2, 3) form a surface (A).
5. Magnetspule (1) gemäß Anspruch 4, dadurch gekennzeichnet, daß die Magnetspule (1) aus mindestens vier elektrischen Leitern (2, 3, 4, 5) besteht, wobei jeweils zwei elektrische Leiter (2, 3 / 4, 5) ineinander spiralförmig gewickelt sind und jeweils eine Fläche (A / B) bilden.5. Magnetic coil (1) according to claim 4, characterized in that the magnetic coil (1) consists of at least four electrical conductors (2, 3, 4, 5), two electrical conductors (2, 3/4, 5) one inside the other are spirally wound and each form a surface (A / B).
6. Magnetspule (1) gemäß Anspruch 5 , dadurch gekennzeichnet, daß die beiden Flächen (A, B) parallel angeordnet sind.6. Magnetic coil (1) according to claim 5, characterized in that the two surfaces (A, B) are arranged in parallel.
7. Magnetspule (1) gemäß einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, daß die elektrischen Leiter (2, 3), die ineinander spiralförmig gewickelt sind und eine Fläche (A) bilden mit den elektrischen Leitern (4, 5), die ineinander spiralförmig gewickelt sind und eine Fläche (B) bilden, in Reihe geschaltet sind.7. Solenoid coil (1) according to one of claims 5 or 6, characterized in that the electrical conductors (2, 3) which are spirally wound into one another and form a surface (A) with the electrical conductors (4, 5), which are spirally wound into each other and form a surface (B), are connected in series.
8. Magnetspule (1) gemäß Anspruch 7, dadurch gekennzeichnet, daß die mindestens zwei inneren Enden (6, 7) der mindestens zwei elektrischen Leiter (2, 3), die ineinander spiralförmig gewickelt sind und eine Fläche (A) bilden, mindestens mit den inneren Enden (6', 7') der mindestens zwei elektrischen Leiter (4, 5), die ineinander spiralförmig gewickelt sind und eine Fläche (B) bilden, verbunden sind.8. Magnetic coil (1) according to claim 7, characterized in that the at least two inner ends (6, 7) of the at least two electrical conductors (2, 3) which are spirally wound into one another and form a surface (A), at least with the inner ends (6 ', 7') of the at least two electrical conductors (4, 5) which are spirally wound into one another and form a surface (B).
9. Magnetspule (1) gemäß einem der Ansprüche 3 bis 8, dadurch gekennzeichnet, daß mindestens ein elektrischer Leiter (3) der mindestens zwei elektrischen Leiter (2, 3) ein Flachbandleiter ist.9. Solenoid coil (1) according to one of claims 3 to 8, characterized in that at least one electrical conductor (3) of the at least two electrical conductors (2, 3) is a ribbon conductor.
10. Magnetspule (1) gemäß einem der Ansprüche 3 bis 9, dadurch gekennzeichnet, daß mindestens ein elektrischer Leiter (2) der mindestens zwei elektrischen Leiter (2, 3) ein Leiter mit Hohlraum ist.10. Magnetic coil (1) according to one of claims 3 to 9, characterized in that at least one electrical conductor (2) of the at least two electrical conductors (2, 3) is a conductor with a cavity.
11. Magnetspule (1) gemäß einem der Ansprüche 5 bis 10, dadurch gekennzeichnet, daß der eine Leiter (2) der mindestens zwei elektrischen11. Magnetic coil (1) according to one of claims 5 to 10, characterized in that the one conductor (2) of the at least two electrical
Leiter (2, 3) und der Leiter (4) der mindestens zwei elektrischen Leiter (4, 5) Teile eines gemeinsamen Leiters sind.Conductors (2, 3) and the conductor (4) of the at least two electrical conductors (4, 5) are parts of a common conductor.
12. Magnetspule (1) gemäß einem der Ansprüche 3 bis 11, dadurch gekennzeichnet, daß zwischen den elektrischen Leitern (2, 3, 4, 5) jeweils eine elektrisch isolierende Schicht (8) angeordnet ist.12. Magnetic coil (1) according to one of claims 3 to 11, characterized in that between the electrical conductors (2, 3, 4, 5) each have an electrically insulating layer (8) is arranged.
13. Verfahren zur Herstellung einer Magnetspule (1), dadurch gekennzeichnet, daß mindestens zwei elektrische Leiter (2, 3) ineinander spiralförmig gewickelt werden. 13. A method for producing a magnetic coil (1), characterized in that at least two electrical conductors (2, 3) are spirally wound into one another.
14. Verfahren gemäß Anspruch 13, dadurch gekennzeichnet, daß die mindestens zwei elektrischen Leiter (2, 3) so gewickelt werden, daß diese eine Fläche (A) bilden.14. The method according to claim 13, characterized in that the at least two electrical conductors (2, 3) are wound so that they form a surface (A).
15. Verfahren gemäß Anspruch 14, dadurch gekennzeichnet, daß mindestens vier elektrische Leiter (2, 3, 4, 5) so gewickelt werden, daß mindestens jeweils zwei elektrische Leiter (2, 3 / 4, 5) ineinander spiralförmig gewickelt werden und jeweils eine Fläche (A / B) bilden.15. The method according to claim 14, characterized in that at least four electrical conductors (2, 3, 4, 5) are wound so that at least two electrical conductors (2, 3/4, 5) are spirally wound into each other and one each Form area (A / B).
16. Verfahren gemäß Anspruch 15, dadurch gekennzeichnet, daß die mindestens zwei Flächen (A, B) parallel angeordnet sind.16. The method according to claim 15, characterized in that the at least two surfaces (A, B) are arranged in parallel.
17. Verfahren gemäß einem der Ansprüche 15 oder 16, dadurch gekennzeichnet, daß die elektrischen Leiter (2, 3), die ineinander spiralförmig gewickelt sind und eine Fläche (A) bilden mit den elektrischen Leitern (4, 5), die ineinander spiralförmig gewickelt sind und eine Fläche (B) bilden, in Reihe geschaltet werden.17. The method according to any one of claims 15 or 16, characterized in that the electrical conductors (2, 3) which are spirally wound into one another and form a surface (A) with the electrical conductors (4, 5) which are spirally wound into one another are and form a surface (B), are connected in series.
18. Verfahren gemäß Anspruch 17, dadurch gekennzeichnet, daß die mindestens zwei inneren Enden (6, 7) der mindestens zwei elektrischen Leiter (2, 3), die ineinander spiralförmig gewickelt sind und eine Fläche (A) bilden, mit den mindestens zwei inneren Enden (6', 7') der mindestens zwei elektrischen Leiter (4, 5), die ineinander spiralförmig gewickelt sind und eine Fläche (B) bilden, verbunden werden.18. The method according to claim 17, characterized in that the at least two inner ends (6, 7) of the at least two electrical conductors (2, 3) which are spirally wound into one another and form a surface (A) with the at least two inner Ends (6 ', 7') of the at least two electrical conductors (4, 5) which are spirally wound into one another and form a surface (B).
19. Verfahren gemäß einem der Ansprüche 13 bis 18, dadurch gekennzeichnet, daß mindestens ein elektrischer Leiter (3) der mindestens zwei elektrischen Leiter (2, 3) ein Flachbandleiter ist. 19. The method according to any one of claims 13 to 18, characterized in that at least one electrical conductor (3) of the at least two electrical conductors (2, 3) is a ribbon conductor.
20. Verfahren gemäß einem der Ansprüche 13 bis 19, dadurch gekennzeichnet, daß mindestens ein elektrischer Leiter (2) der mindestens zwei elektrischen Leiter (2, 3) ein Leiter mit einem Hohlraum ist.20. The method according to any one of claims 13 to 19, characterized in that at least one electrical conductor (2) of the at least two electrical conductors (2, 3) is a conductor with a cavity.
21. Magnetspule (1) gemäß einem der Ansprüche 15 bis 20, dadurch gekennzeichnet, daß der eine Leiter (2) der mindestens zwei elektrischen Leiter (2, 3) und der Leiter (4) der mindestens zwei elektrischen Leiter (4, 5) Teile eines gemeinsamen Leiters sind.21. Magnetic coil (1) according to one of claims 15 to 20, characterized in that the one conductor (2) of the at least two electrical conductors (2, 3) and the conductor (4) of the at least two electrical conductors (4, 5) Are parts of a common leader.
22. Verfahren gemäß einem der Ansprüche 13 bis 21, dadurch gekennzeichnet, daß zwischen den elektrischen Leitern (2, 3, 4, 5) jeweils eine elektrisch isolierende Schicht (8) angeordnet wird.22. The method according to any one of claims 13 to 21, characterized in that an electrically insulating layer (8) is arranged between the electrical conductors (2, 3, 4, 5).
23. Verwendung einer Spule gemäß einem der Spulen- Ansprüche zur magnetischen Stimulation von Körperteilen. 23. Use of a coil according to one of the coil claims for magnetic stimulation of body parts.
PCT/EP2001/010827 2000-09-19 2001-09-19 Magnet coil WO2002025675A1 (en)

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