EP0259559A1 - Shock-wave generator for non-contacting disintegration of concretions in a living body - Google Patents

Shock-wave generator for non-contacting disintegration of concretions in a living body Download PDF

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Publication number
EP0259559A1
EP0259559A1 EP87109710A EP87109710A EP0259559A1 EP 0259559 A1 EP0259559 A1 EP 0259559A1 EP 87109710 A EP87109710 A EP 87109710A EP 87109710 A EP87109710 A EP 87109710A EP 0259559 A1 EP0259559 A1 EP 0259559A1
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Prior art keywords
membrane
coil
wave generator
potential difference
shock wave
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EP87109710A
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German (de)
French (fr)
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EP0259559B1 (en
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Josef Reitter
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Siemens AG
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Siemens AG
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated

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  • the invention relates to a shock wave generator for a device for the contactless crushing of concrements in the body of a living being, which has a coil with spirally arranged turns and an opposite, a liquid-filled space, made of an electrically conductive material membrane, the coil can be connected to a high voltage supply.
  • shock wave generator with a membrane arranged parallel to the coil is described in DE-OS 33 12 014.
  • the shock waves are generated by connecting the coil to the high-voltage supply, which converts one to several kV, e.g. 20 kV, charged capacitor contains.
  • the energy stored in the capacitor then suddenly discharges into the coil, with the result that the coil builds up a magnetic field extremely quickly.
  • a current is induced in the membrane which is opposite to the current flowing in the coil and consequently generates an opposing magnetic field, under the effect of which the membrane is suddenly moved away from the coil.
  • the so in the with liquid, e.g. Water, filled space shock wave generated by suitable measures on the concrements located in the body of the living being, e.g. Kidney stones, focuses and causes their destruction.
  • the invention has for its object to design a generic shock wave generator so that its membrane has a long service life without being associated with a significant reduction in the efficiency of energy conversion.
  • this object is achieved in that in areas of large potential difference between the turns of the coil on the one hand and the membrane on the other hand there is an increased distance between the two areas which is smaller than areas of small potential difference.
  • the invention takes advantage of the fact that the high voltage drops across the coil and thus the potential difference between the individual turns of the coil and the membrane is different. Accordingly, it is sufficient to ensure a long service life of the membrane if the distance between the turns of the coil and the membrane is increased compared to areas of low potential difference in those areas in which voltage flashovers are to be feared due to the large potential difference present.
  • a long service life of the membrane with a particularly low impact on the efficiency of the energy conversion can be achieved if, according to a variant of the invention, the outermost turn of the coil with the membrane is at the same potential and the inner turns of the coil are at a greater distance from the membrane.
  • the outermost turn of the coil with the membrane is at the same potential and the inner turns of the coil are at a greater distance from the membrane.
  • a further reduction in the effect of the measure according to the invention on the efficiency of the energy conversion is achieved according to one embodiment of the invention in that the increased distance between the turns of the coil and the membrane in areas with a large potential difference continuously decreases towards areas with a small potential difference.
  • This measure ensures that in areas of large potential difference between the individual turns of the coil and the membrane there is in fact only that distance which is to avoid voltage flashovers and thus to Ensuring adequate membrane life is required.
  • an embodiment of the invention provides that the membrane is at earth potential, which ensures that the liquid in the room which may be in contact with the living organism or the operating personnel Can come into contact, there is no high voltage.
  • a last variant of the invention provides that the turns of the coil are arranged on a support surface of an insulator, the support surface being designed according to the distance required between the turns and the membrane. This ensures safe compliance with this distance.
  • the shock wave generator has a housing 1 which contains a space 3 filled with a liquid and closed off by a membrane 2. Opposite the membrane 2 formed from an electrically conductive material, a coil 4 with spirally arranged turns is provided, an insulating film 5 being arranged between the membrane 2 and the coil 4. The turns of the coil 4 are arranged on a support surface 6 of an insulator 7, which is accommodated in a cap 8. The membrane 2, the insulating film 5 and the cap 8 containing the insulator 7 with the coil 4 are fastened to the housing 1 by means of screws 9.
  • the space located between the insulating film 5 and the support surface 6 of the insulator 7 is one
  • electrically insulating cast resin not shown, is filled in.
  • the coil 4 can be connected via connections 10 and 11, which emerge through bores in the insulator 7 and the cap 8, by means of a suitable switching means 12 to a schematically illustrated high-voltage supply 13, which emits a current surge to the coil 4, thereby causing the membrane 2 is suddenly repelled by the coil 4, which leads to the formation of a shock wave in the liquid in the space 3.
  • potential differences occur between the membrane 2 and the individual turns of the coil 4.
  • the outermost turn 14 of the coil 4 with the membrane 2 is at the same potential, namely earth potential 15, so that between the inner turns 16 to 21 of the coil 4 and the membrane 2 there is a high potential difference.
  • the turns 16 to 21 are consequently arranged at a greater distance from the membrane 2 than the outer turns of the coil 4, which have a smaller potential difference from the membrane 2.
  • the distance between the windings 16 to 21 from the membrane 2 also decreases in the sense of the decrease in the potential difference, namely continuously, the contact surface 6 of the insulator 7 being shaped in accordance with the distance required between the windings 16 to 21 and the membrane 2.
  • shock wave generators with a flat membrane 2 is shown. It is also possible to design shock wave generators with a different, for example spherically shaped membrane according to the invention.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Surgical Instruments (AREA)

Abstract

Die Erfindung betrifft einen Stoßwellengenerator für eine Einrichtung zum berührungslosen Zertrümmern von Konkrementen im Körper eines Lebewesens, welcher eine Spule (4) mit spiralförmig angeordneten Windungen und eine dieser gegenüberliegende, einen mit einer Flüssigkeit gefüllten Raum (3) abschließende, aus einem elektrisch leitenden Werkstoff gebildete Membran (2) aufweist, wobei die Spule (4) an eine Hochspannungsversorgung (13) anschließbar ist. Um eine hohe Lebensdauer der Membran (2) ohne nennenswerte Minderung des bei der Wandlung von elektrischer Energie in Stoßenergie vorliegenden Wirkungsgrades sicherzustellen, liegt in Bereichen großer Potentialdifferenz zwischen den Windungen (16 bis 21) der Spule (4) einerseits und der Membran (2) andererseits zwischen beiden ein gegenüber Bereichen geringer Potentialdifferenz vergrößerter Abstand vor.The invention relates to a shock wave generator for a device for contactlessly crushing concrements in the body of a living being, which has a coil (4) with spirally arranged windings and an opposite one, formed from an electrically conductive material and closing a space (3) filled with a liquid Has membrane (2), the coil (4) being connectable to a high voltage supply (13). In order to ensure a long service life of the membrane (2) without any appreciable reduction in the efficiency present when converting electrical energy into impact energy, there is a large potential difference between the turns (16 to 21) of the coil (4) on the one hand and the membrane (2) on the other hand, there is a greater distance between the two compared to regions with a small potential difference.

Description

Die Erfindung betrifft einen Stoßwellengenerator für eine Einrichtung zum berührungslosen Zertrümmern von Konkre­menten im Körper eines Lebewesens, welcher eine Spule mit spiralförmig angeordneten Windungen und eine dieser ge­genüberliegende, einen mit einer Flüssigkeit gefüllten Raum abschließende, aus einem elektrisch leitenden Werk­stoff gebildete Membran aufweist, wobei die Spule an ei­ne Hochspannungsversorgung anschließbar ist.The invention relates to a shock wave generator for a device for the contactless crushing of concrements in the body of a living being, which has a coil with spirally arranged turns and an opposite, a liquid-filled space, made of an electrically conductive material membrane, the coil can be connected to a high voltage supply.

Ein solcher Stoßwellengenerator mit einer parallel zu der Spule angeordneten Membran ist in der DE-OS 33 12 014 beschrieben. Dabei werden die Stoßwellen dadurch erzeugt, daß die Spule an die Hochspannungsversorgung angeschlos­sen wird, die einen auf mehrere kV, z.B. 20 kV, aufgela­denen Kondensator enthält. Die in dem Kondensator gespei­cherte Energie entlädt sich dann schlagartig in die Spu­le, was zur Folge hat, daß die Spule äußerst schnell ein magnetisches Feld aufbaut. Gleichzeitig wird in der Mem­bran ein Strom induziert, der dem in der Spule fließenden Strom entgegengesetzt ist und demzufolge ein magnetisches Gegenfeld erzeugt, unter dessen Wirkung die Membran schlagartig von der Spule wegbewegt wird. Die so in dem mit Flüssigkeit, z.B. Wasser, gefüllten Raum erzeugte Stoßwelle wird durch geeignete Maßnahmen auf die im Kör­per des Lebewesens befindlichen Konkremente, z.B. Nieren­steine, fokussiert und bewirkt deren Zertrümmerung.Such a shock wave generator with a membrane arranged parallel to the coil is described in DE-OS 33 12 014. The shock waves are generated by connecting the coil to the high-voltage supply, which converts one to several kV, e.g. 20 kV, charged capacitor contains. The energy stored in the capacitor then suddenly discharges into the coil, with the result that the coil builds up a magnetic field extremely quickly. At the same time, a current is induced in the membrane which is opposite to the current flowing in the coil and consequently generates an opposing magnetic field, under the effect of which the membrane is suddenly moved away from the coil. The so in the with liquid, e.g. Water, filled space, shock wave generated by suitable measures on the concrements located in the body of the living being, e.g. Kidney stones, focuses and causes their destruction.

Um eine möglichst weitgehende Wandlung der von der Hoch­spannungsversorgung abgegebenen elektrischen Energie in Stoßenergie zu erreichen, ist es bei dem bekannten Stoß­wellengenerator erforderlich, die Membran möglichst nahe an der Spule anzubringen. Dies ist jedoch wegen der zwi­schen der Spule und der Membran zwangsläufig vorliegenden Potentialdifferenz nur bedingt möglich, da zur Vermeidung von Spannungsüberschlägen zwischen Membran und Spule ein Mindestabstand eingehalten werden muß. Spannungsüber­schläge würden die Wirkung des Stoßwellengenerators be­einträchtigen und zu Beschädigungen der Membran führen, die deren Lebensdauer nachteilig beeinflussen. Bei dem bekannten Stoßwellengenerator muß daher im Interesse ei­ner ausreichenden Lebensdauer der Membran der Abstand zwischen der Membran und der Spule so gewählt werden, daß sich bei der Wandlung der elektrischen Energie in Stoß­energie nur ein unbefriedigender Wirkungsgrad einstellt.To convert the electrical energy emitted by the high-voltage supply as far as possible into To achieve impact energy, it is necessary in the known shock wave generator to attach the membrane as close as possible to the coil. However, this is only possible to a limited extent because of the inevitable potential difference between the coil and the membrane, since a minimum distance must be maintained in order to avoid voltage flashovers between the membrane and the coil. Voltage flashovers would impair the effect of the shock wave generator and lead to damage to the membrane, which adversely affects its service life. In the case of the known shock wave generator, the distance between the membrane and the coil must therefore be chosen in the interest of a sufficient lifespan of the membrane so that only an unsatisfactory efficiency is achieved when converting the electrical energy into shock energy.

Der Erfindung liegt die Aufgabe zugrunde, einen gattungs­gemäßen Stoßwellengenerator so auszubilden, daß dessen Membran eine hohe Lebensdauer aufweist, ohne daß damit eine nennenswerte Minderung des Wirkungsgrades der Ener­giewandlung verbunden ist.The invention has for its object to design a generic shock wave generator so that its membrane has a long service life without being associated with a significant reduction in the efficiency of energy conversion.

Nach der Erfindung wird diese Aufgabe dadurch gelöst, daß in Bereichen großer Potentialdifferenz zwischen den Win­dungen der Spule einerseits und der Membran andererseits zwischen beiden ein gegenüber Bereichen geringer Poten­tialdifferenz vergrößerter Abstand vorliegt. Die Erfin­dung macht sich die Tatsache zunutze, daß die Hochspan­nung über der Spule abfällt und somit die zwischen den einzelnen Windungen der Spule und der Membran vorhandene Potentialdifferenz unterschiedlich ist. Demzufolge reicht es zur Sicherstellung einer hohen Lebensdauer der Membran aus, wenn der Abstand zwischen den Windungen der Spule und der Membran in jenen Bereichen, in denen aufgrund der vorliegenden großen Potentialdifferenz Spannungsüber­schläge zu befürchten sind, gegenüber Bereichen geringer Potentialdifferenz vergrößert ist. Eine Verschlechterung des Wirkungsgrades der Energiewandlung tritt durch diese Maßnahme allenfalls in beschränktem Umfang ein, da im Ge­gensatz zu dem bekannten Stoßwellengenerator nicht sämt­liche Windungen der Spule in einem solchen Abstand zu der Membran angeordnet sind, daß bei der maximal auftretenden Potentialdifferenz Hochspannungsfestigkeit vorliegt, son­dern eben nur jene Windungen, in deren Bereich tatsäch­lich die Gefahr von Spannungsüberschlägen besteht.According to the invention, this object is achieved in that in areas of large potential difference between the turns of the coil on the one hand and the membrane on the other hand there is an increased distance between the two areas which is smaller than areas of small potential difference. The invention takes advantage of the fact that the high voltage drops across the coil and thus the potential difference between the individual turns of the coil and the membrane is different. Accordingly, it is sufficient to ensure a long service life of the membrane if the distance between the turns of the coil and the membrane is increased compared to areas of low potential difference in those areas in which voltage flashovers are to be feared due to the large potential difference present. A worsening The efficiency of the energy conversion occurs at most to a limited extent as a result of this measure, since, in contrast to the known shock wave generator, not all turns of the coil are arranged at such a distance from the membrane that high-voltage strength is present at the maximum potential difference, but only those turns , in the area of which there is actually a risk of voltage flashovers.

Eine hohe Lebensdauer der Membran bei besonders geringen Auswirkungen auf den Wirkungsgrad der Energiewandlung ist erreichbar, wenn nach einer Variante der Erfindung die äußerste Windung der Spule mit der Membran auf gleichem Potential liegt und die inneren Windungen der Spule den vergrößerten Abstand zur Membran aufweisen. Aufgrund die­ser Maßnahme liegt zwischen den äußeren Windungen der Spule, die wegen ihres großen Durchmessers den größten Teil der Antriebsenergie der Membran aufbringen, und der Membran nur eine geringe Potentialdifferenz vor, so daß diese Windungen sehr nahe an der Membran angeordnet wer­den können. Der vergrößerte Abstand zur Membran der ohne­hin nur einen geringen Anteil der Antriebsenergie auf­bringenden inneren Windungen bleibt in der Praxis ohne nennenswerten Einfluß auf den Wirkungsgrad der Energie­wandlung.A long service life of the membrane with a particularly low impact on the efficiency of the energy conversion can be achieved if, according to a variant of the invention, the outermost turn of the coil with the membrane is at the same potential and the inner turns of the coil are at a greater distance from the membrane. As a result of this measure, there is only a small potential difference between the outer turns of the coil, which, because of their large diameter, apply the largest part of the driving energy of the membrane, and the membrane, so that these turns can be arranged very close to the membrane. In practice, the increased distance from the membrane of the inner windings, which in any case only provide a small proportion of the drive energy, remains without any appreciable influence on the efficiency of the energy conversion.

Eine weitere Verringerung der Auswirkung der erfindungs­gemäßen Maßnahme auf den Wirkungsgrad der Energiewandlung wird nach einer Ausführungsform der Erfindung dadurch er­reicht, daß der zwischen den Windungen der Spule und der Membran in Bereichen großer Potentialdifferenz vorliegen­de vergrößerte Abstand zu Bereichen geringer Potential­differenz hin kontinuierlich abnimmt. Durch diese Maßnah­me wird erreicht, daß in Bereichen großer Potentialdif­ferenz zwischen den einzelnen Windungen der Spule und der Membran tatsächlich nur derjenige Abstand vorliegt, der zur Vermeidung von Spannungsüberschlägen, und damit zur Sicherstellung einer ausreichenden Lebensdauer der Mem­bran erforderlich ist.A further reduction in the effect of the measure according to the invention on the efficiency of the energy conversion is achieved according to one embodiment of the invention in that the increased distance between the turns of the coil and the membrane in areas with a large potential difference continuously decreases towards areas with a small potential difference. This measure ensures that in areas of large potential difference between the individual turns of the coil and the membrane there is in fact only that distance which is to avoid voltage flashovers and thus to Ensuring adequate membrane life is required.

Um Gefährdungen des zu behandelnden Lebewesens sowie des Bedienungspersonals zu vermeiden, sieht eine Ausführung der Erfindung vor, daß die Membran auf Erdpotential liegt, wodurch sichergestellt ist, daß an der in dem Raum befindlichen Flüssigkeit, die unter Umständen mit dem Lebewesen bzw. dem Bedienungspersonal in Berührung kommen kann, keine Hochspannung anliegt.In order to avoid dangers to the living being to be treated and the operating personnel, an embodiment of the invention provides that the membrane is at earth potential, which ensures that the liquid in the room which may be in contact with the living organism or the operating personnel Can come into contact, there is no high voltage.

Eine letzte Variante der Erfindung sieht vor, daß die Windungen der Spule auf einer Auflagefläche eines Iso­lators angeordnet sind, wobei die Auflagefläche entspre­chend dem zwischen den Windungen und der Membran jeweils erforderlichen Abstand gestaltet ist. Es wird so eine sichere Einhaltung dieses Abstand gewährleistet.A last variant of the invention provides that the turns of the coil are arranged on a support surface of an insulator, the support surface being designed according to the distance required between the turns and the membrane. This ensures safe compliance with this distance.

Eine Ausführungsbeispiel der Erfindung ist in der Zeich­nung dargestellt, deren einzige Figur einen Längsschnitt durch einen erfindungsgemäßen Stoßwellengenerator zeigt.An embodiment of the invention is shown in the drawing, the only figure of which shows a longitudinal section through a shock wave generator according to the invention.

Der erfindungsgemäße Stoßwellengenerator weist ein Gehäu­se 1 auf, das einen mit einer Flüssigkeit gefüllten, durch eine Membran 2 abgeschlossenen Raum 3 enthält. Der aus einem elektrisch leitenden Werkstoff gebildeten Mem­bran 2 gegenüberliegend ist eine Spule 4 mit spiralförmig angeordneten Windungen vorgesehen, wobei zwischen der Membran 2 und der Spule 4 eine Isolierfolie 5 angeordnet ist. Die Windungen der Spule 4 sind auf einer Auflageflä­che 6 eines Isolators 7 angeordnet, der in einer Kappe 8 aufgenommen ist. Die Membran 2, die Isolierfolie 5 und die den Isolator 7 mit der Spule 4 enthaltende Kappe 8 sind mittels Schrauben 9 an dem Gehäuse 1 befestigt. Zur Fixierung der Spule 4 an der Auflagefläche 6 des Isola­tors 7 ist der zwischen der Isolierfolie 5 und der Auf­lagefläche 6 des Isolators 7 befindliche Raum mit einem der Übersichtlichkeit halber nicht dargestellten elek­trisch isolierenden Gießharz ausgefüllt. Die Spule 4 ist über Anschlüsse 10 und 11, die durch Bohrungen in dem Isolator 7 und der Kappe 8 nach außen treten, mittels eines geeigneten Schaltmittels 12 an eine schematisch dargestellte Hochspannungsversorgung 13 anschließbar, die einen Stromstoß an die Spule 4 abgibt, wodurch die Mem­bran 2 schlagartig von der Spule 4 abgestoßen wird, was zur Ausbildung einer Stoßwelle in der Flüssigkeit im Raum 3 führt. Infolge der an der Spule 4 anliegenden Hochspan­nung treten zwischen der Membran 2 und den einzelnen Win­dungen der Spule 4 Potentialdifferenzen auf.The shock wave generator according to the invention has a housing 1 which contains a space 3 filled with a liquid and closed off by a membrane 2. Opposite the membrane 2 formed from an electrically conductive material, a coil 4 with spirally arranged turns is provided, an insulating film 5 being arranged between the membrane 2 and the coil 4. The turns of the coil 4 are arranged on a support surface 6 of an insulator 7, which is accommodated in a cap 8. The membrane 2, the insulating film 5 and the cap 8 containing the insulator 7 with the coil 4 are fastened to the housing 1 by means of screws 9. To fix the coil 4 on the support surface 6 of the insulator 7, the space located between the insulating film 5 and the support surface 6 of the insulator 7 is one For the sake of clarity, electrically insulating cast resin, not shown, is filled in. The coil 4 can be connected via connections 10 and 11, which emerge through bores in the insulator 7 and the cap 8, by means of a suitable switching means 12 to a schematically illustrated high-voltage supply 13, which emits a current surge to the coil 4, thereby causing the membrane 2 is suddenly repelled by the coil 4, which leads to the formation of a shock wave in the liquid in the space 3. As a result of the high voltage applied to the coil 4, potential differences occur between the membrane 2 and the individual turns of the coil 4.

Dabei ist vorgesehen, daß in Bereichen großer Potential­differenz zwischen den Windungen der Spule 4 und der Mem­bran 2 zwischen beiden ein gegenüber Bereichen geringer Potentialdifferenz vergrößerter Abstand vorliegt. Im Fal­le des dargestellten erfindungsgemäßen Stoßwellengenera­tors liegt, wie aus der Figur ersichtlich ist, die äußer­ste Windung 14 der Spule 4 mit der Membran 2 auf gleichem Potential, nämlich Erdpotential 15, so daß zwischen den inneren Windungen 16 bis 21 der Spule 4 und der Membran 2 eine hohe Potentialdifferenz vorliegt. Die Windungen 16 bis 21 sind demzufolge in einem größeren Abstand zur Mem­bran 2 angeordnet als die äußeren, eine geringere Poten­tialdifferenz zur Membran 2 aufweisenden Windungen der Spule 4.It is provided that in areas with a large potential difference between the turns of the coil 4 and the membrane 2 there is a greater distance between the two compared to areas with a small potential difference. In the case of the shock wave generator according to the invention shown, as can be seen from the figure, the outermost turn 14 of the coil 4 with the membrane 2 is at the same potential, namely earth potential 15, so that between the inner turns 16 to 21 of the coil 4 and the membrane 2 there is a high potential difference. The turns 16 to 21 are consequently arranged at a greater distance from the membrane 2 than the outer turns of the coil 4, which have a smaller potential difference from the membrane 2.

Der Abstand der Windungen 16 bis 21 von der Membran 2 nimmt im Sinne der Abnahme der Potentialdifferenz eben­falls, und zwar kontinuierlich ab, wobei die Auflage­fläche 6 des Isolators 7 entsprechend dem zwischen den Windungen 16 bis 21 und der Membran 2 jeweils erforder­lichen Abstand geformt ist.The distance between the windings 16 to 21 from the membrane 2 also decreases in the sense of the decrease in the potential difference, namely continuously, the contact surface 6 of the insulator 7 being shaped in accordance with the distance required between the windings 16 to 21 and the membrane 2.

In dem Ausführungsbeispiel ist ein Stoßwellengenerator mit einer ebenen Membran 2 dargestellt. Es ist aber auch möglich, Stoßwellengeneratoren mit andersartig, z.B. sphärisch geformter Membran erfindungsgemäß auszubilden.In the exemplary embodiment, a shock wave generator with a flat membrane 2 is shown. It is also possible to design shock wave generators with a different, for example spherically shaped membrane according to the invention.

Außerdem können im Rahmen der Erfindung z.B. die innerste Windung der Spule auf einem positiven, die äußerste Win­dung der Spule auf einem negativen und die Membran auf einem dazwischenliegenden Potential liegen. Sowohl die inneren als auch die äußeren Windungen der Spule weisen dann einen vergrößerten Abstand zur Membran auf.In addition, e.g. the innermost turn of the coil on a positive, the outermost turn of the coil on a negative and the membrane on an intermediate potential. Both the inner and the outer turns of the coil are then at an increased distance from the membrane.

Claims (5)

1. Stoßwellengenerator für eine Einrichtung zum berüh­rungslosen Zertrümmern von Konkrementen im Körper eines Lebewesens, welcher eine Spule (4) mit spiralförmig ange­ordneten Windungen und eine dieser gegenüberliegende, ei­nen mit einer Flüssigkeit gefüllten Raum (3) abschließen­de, aus einem elektrisch leitenden Werkstoff gebildete Membran (2) aufweist, wobei die Spule (4) an eine Hoch­spannungsversorgung (13) anschließbar ist, da­durch gekennzeichnet, daß in Be­reichen großer Potentialdifferenz zwischen den Windungen (16 bis 21) der Spule (4) einerseits und der Membran (2) andererseits zwischen beiden ein gegenüber Bereichen ge­ringer Potentialdifferenz vergrößerter Abstand vorliegt.1.Shock wave generator for a device for the contactless crushing of concrements in the body of a living being, which has a coil (4) with spirally arranged turns and an opposite one, a liquid-filled space (3), formed from an electrically conductive material membrane ( 2), the coil (4) being connectable to a high-voltage supply (13), characterized in that in areas of large potential difference between the turns (16 to 21) of the coil (4) on the one hand and the membrane (2) on the other hand between the two there is a greater distance than regions with a small potential difference. 2. Stoßwellengenerator nach Anspruch 1, dadurch gekennzeichnet, daß die äußerste Windung (14) der Spule (4) mit der Membran (2) auf gleichem Po­tential (15) liegt und die inneren Windungen (16 bis 21) der Spule (4) den vergrößerten Abstand zur Membran (2) aufweisen.2. Shock wave generator according to claim 1, characterized in that the outermost turn (14) of the coil (4) with the membrane (2) is at the same potential (15) and the inner turns (16 to 21) of the coil (4) have an increased distance from the membrane (2). 3. Stoßwellengenerator nach Anspruch 1 oder 2, da­durch gekennzeichnet, daß der zwi­schen den Windungen (16 bis 21) der Spule (4) und der Membran (2) in Bereichen großer Potentialdifferenz vor­liegende vergrößerte Abstand zu Bereichen geringer Po­tentialdifferenz hin kontinuierlich abnimmt.3. Shock wave generator according to claim 1 or 2, characterized in that between the windings (16 to 21) of the coil (4) and the membrane (2) present in areas of large potential difference, the increased distance to areas of small potential difference decreases continuously. 4. Stoßwellengenerator nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Membran (2) auf Erdpotential (15) liegt.4. Shock wave generator according to one of claims 1 to 3, characterized in that the membrane (2) is at earth potential (15). 5. Stoßwellengenerator nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Windungen der Spule (4) auf einer Auflagefläche (6) eines Isolators (7) angeordnet sind, wobei die Auflagefläche (6) entsprechend dem zwischen den Windungen und der Mem­bran (2) jeweils erforderlichen Abstand gestaltet ist.5. Shock wave generator according to one of claims 1 to 4, characterized in that the windings of the coil (4) on a support surface (6) Insulators (7) are arranged, the bearing surface (6) being designed according to the distance required between the windings and the membrane (2).
EP87109710A 1986-07-14 1987-07-06 Shock-wave generator for non-contacting disintegration of concretions in a living body Expired - Lifetime EP0259559B1 (en)

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DE3623703 1986-07-14
DE3623703 1986-07-14

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EP0259559B1 EP0259559B1 (en) 1991-01-16

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EP (1) EP0259559B1 (en)
JP (1) JPH0340258Y2 (en)
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EP0383984A1 (en) * 1989-02-24 1990-08-29 Siemens Aktiengesellschaft Shock wave generator
DE4125088C1 (en) * 1991-07-29 1992-06-11 Siemens Ag, 8000 Muenchen, De

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US5095891A (en) * 1986-07-10 1992-03-17 Siemens Aktiengesellschaft Connecting cable for use with a pulse generator and a shock wave generator
US5233972A (en) * 1990-09-27 1993-08-10 Siemens Aktiengesellschaft Shockwave source for acoustic shockwaves
DE4032357C1 (en) * 1990-10-12 1992-02-20 Dornier Medizintechnik Gmbh, 8000 Muenchen, De
IL128404A0 (en) * 1999-02-07 2000-01-31 Spector Avner Device for transmission of shock waves on to large surfaces of human tissue
US6755796B2 (en) 1999-02-07 2004-06-29 Medispec Ltd. Pressure-pulse therapy apparatus
WO2002034104A2 (en) * 2000-10-29 2002-05-02 Medispec Ltd. Pressure-pulse therapy device for treatment of deposits

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DE3328051A1 (en) * 1983-08-03 1985-02-14 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR CONTACTLESS CRUSHING OF CONCRETE
DE3443295A1 (en) * 1984-11-28 1986-06-05 Wolfgang Prof. Dr. 7140 Ludwigsburg Eisenmenger DEVICE FOR THE CONTACT-FREE CRUSHING OF CONCRETE IN THE BODY OF LIVING BEINGS
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DE3312014A1 (en) * 1983-04-02 1984-10-11 Wolfgang Prof. Dr. 7140 Ludwigsburg Eisenmenger Device for the contactless crushing of concrements in the body of living beings

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Publication number Priority date Publication date Assignee Title
EP0383984A1 (en) * 1989-02-24 1990-08-29 Siemens Aktiengesellschaft Shock wave generator
DE4125088C1 (en) * 1991-07-29 1992-06-11 Siemens Ag, 8000 Muenchen, De
FR2681262A1 (en) * 1991-07-29 1993-03-19 Siemens Ag ACOUSTIC ELECTROMAGNETIC SOURCE OF PRESSURE PULSES.

Also Published As

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EP0259559B1 (en) 1991-01-16
JPS6318109U (en) 1988-02-06
DE3767414D1 (en) 1991-02-21
JPH0340258Y2 (en) 1991-08-23
US4782821A (en) 1988-11-08

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