EP0263349A1 - Shock wave generator - Google Patents
Shock wave generator Download PDFInfo
- Publication number
- EP0263349A1 EP0263349A1 EP87113850A EP87113850A EP0263349A1 EP 0263349 A1 EP0263349 A1 EP 0263349A1 EP 87113850 A EP87113850 A EP 87113850A EP 87113850 A EP87113850 A EP 87113850A EP 0263349 A1 EP0263349 A1 EP 0263349A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- shock wave
- coil
- patient
- surface coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 230000035939 shock Effects 0.000 title claims description 18
- 239000012528 membrane Substances 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000011810 insulating material Substances 0.000 claims abstract description 5
- 239000004020 conductor Substances 0.000 claims abstract description 3
- 239000004575 stone Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000000913 Kidney Calculi Diseases 0.000 description 1
- 206010029148 Nephrolithiasis Diseases 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
Definitions
- the invention relates to a shock wave source for the treatment of concretions in the body of a patient with a liquid-filled shock wave tube, one end of which is closed by a flexible sack that can be pressed against the patient by means of the liquid pressure and the other end of which is a membrane made of electrically conductive material which, separated by an insulating material layer, opposite a surface coil which is connected to a supply unit for generating high-voltage pulses.
- a shock wave source of this type can be used to generate focused shock waves which are directed to the concrement to be broken, e.g. a kidney stone, can be straightened and smashed it so far that it comes off naturally.
- the shock wave is generated by the fact that a high-voltage capacitor is connected across the surface coil, e.g. may have a spiral winding, is discharged, thereby repelling the membrane and directing a shock wave over the liquid and an acoustic lens in the shock wave tube at the stone to be broken.
- a shock wave source of this type is known in which both a coil end and the membrane are at ground potential. This means that when a high voltage of, for example, 20 kV is applied to the surface coil to generate a shock wave, the entire high voltage is also between a point of the surface coil and the membrane. The layer of insulating material between the surface coil and the membrane must therefore be dimensioned for the entire high voltage be. Nevertheless, it is not always possible to avoid rollovers. In the event of a rollover, the membrane is destroyed.
- the invention has for its object to design a shock wave source of the type mentioned so that the risk of voltage flashovers between the surface coil and the membrane is reduced compared to the prior art.
- the membrane is electrically isolated from both ends of the surface coil.
- the membrane and one coil end are not earthed, so that the entire high voltage lies between the membrane and the coil. Because of the electrical insulation of the membrane from both coil ends, the insulating distance for the entire high voltage is twice the distance between the coil and the membrane, so that the risk of breakdown is extremely low.
- a shock wave tube 1 is shown, which is closed on its application side by an elastic bag 2 that can be placed on a patient and on its opposite side by a membrane 3.
- the space between components 1, 2, 3 is filled with water as the coupling medium.
- An acoustic lens 4 for focusing the generated shock waves is arranged in it.
- the shock wave is generated with the aid of a surface coil 6 opposite the membrane, which is spirally wound and separated from the membrane 3 by an insulating layer 7.
- One connection of the surface coil 6 is grounded and the second connection can be connected to a high-voltage generator 8 for generating shock waves.
- the high-voltage pulse generated in this way due to the eddy currents generated in the membrane 3 from metallic material, causes the membrane 3 to be repelled, as a result of which a shock wave is caused by the water in the shock-wave tube 1 up to the stone in the patient reproduces.
- the membrane 3 is electrically insulated from both ends 6a, 6b of the surface coil 6.
- the entire insulating distance which must withstand the maximum high voltage, is therefore equal to the double thickness of the insulating layer 7.
- the risk of flashovers between a point of the surface coil 6 and the membrane 3 is accordingly extremely low. If a rollover took place, it would generally run between the coil end 6a, the membrane 3 and the coil end 6b. It follows from this that the entire insulating distance is equal to twice the distance between the surface coil 6 and the membrane 3, so that sufficient insulation is ensured even with a thin layer of insulating material 7.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Die Erfindung betrifft eine Stoßwellenquelle zur Behandlung von Konkrementen im Körper eines Patienten mit einem flüssigkeitsgefüllten Stoßwellenrohr, dessen eines Ende von einem über den Flüssigkeitsdruck an den Patienten andrückbaren, flexiblen Sack verschlossen ist und an dessen anderem Ende eine Membran aus elektrisch leitfähigem Material liegt, der, durch eine Isolierstoffschicht getrennt, eine Flächenspule gegenüberliegt, welche an einer Versorgungseinheit zur Erzeugung von Hochspannungsimpulsen angeschlossen ist.The invention relates to a shock wave source for the treatment of concretions in the body of a patient with a liquid-filled shock wave tube, one end of which is closed by a flexible sack that can be pressed against the patient by means of the liquid pressure and the other end of which is a membrane made of electrically conductive material which, separated by an insulating material layer, opposite a surface coil which is connected to a supply unit for generating high-voltage pulses.
Durch eine Stoßwellenquelle dieser Art können fokussierte Stoßwellen erzeugt werden, die auf das zu zertrümmernde Konkrement, z.B. einen Nierenstein, gerichtet werden können und diesen so weit zertrümmern, daß er auf natürlichem Weg abgeht. Die Stoßwellenerzeugung erfolgt dadurch, daß ein Hochspannungskondensator über die Flächenspule, die z.B. eine spiralige Wicklung aufweisen kann, entladen wird, wodurch die Membran abgestoßen wird und eine Stoßwelle über die Flüssigkeit und eine akustische Linse im Stoßwellenrohr auf den zu zertrümmernden Stein richtet.A shock wave source of this type can be used to generate focused shock waves which are directed to the concrement to be broken, e.g. a kidney stone, can be straightened and smashed it so far that it comes off naturally. The shock wave is generated by the fact that a high-voltage capacitor is connected across the surface coil, e.g. may have a spiral winding, is discharged, thereby repelling the membrane and directing a shock wave over the liquid and an acoustic lens in the shock wave tube at the stone to be broken.
Es ist eine Stoßwellenquelle dieser Art bekannt, bei der sowohl ein Spulenende als auch die Membran auf Erdpotential liegen. Dies bedeutet, daß beim Anlegen einer Hochspannung von z.B. 20 kV an die Flächenspule zur Erzeugung einer Stoßwelle die gesamte Hochspannung auch zwischen einem Punkt der Flächenspule und der Membran liegt. Die Isolierstoffschicht zwischen der Flächenspule und der Membran muß also für die gesamte Hochspannung bemessen sein. Trotzdem gelingt es nicht immer, Überschläge zu vermeiden. Bei einem Überschlag erfolgt eine Zerstörung der Membran.A shock wave source of this type is known in which both a coil end and the membrane are at ground potential. This means that when a high voltage of, for example, 20 kV is applied to the surface coil to generate a shock wave, the entire high voltage is also between a point of the surface coil and the membrane. The layer of insulating material between the surface coil and the membrane must therefore be dimensioned for the entire high voltage be. Nevertheless, it is not always possible to avoid rollovers. In the event of a rollover, the membrane is destroyed.
Der Erfindung liegt die Aufgabe zugrunde, eine Stoßwellenquelle der eingangs genannten Art so auszubilden, daß die Gefahr von Spannungsüberschlägen zwischen der Flächenspule und der Membran gegenüber dem Stand der Technik reduziert ist.The invention has for its object to design a shock wave source of the type mentioned so that the risk of voltage flashovers between the surface coil and the membrane is reduced compared to the prior art.
Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß die Membran von beiden Enden der Flächenspule elektrisch isoliert ist. Im Gegensatz zum Stand der Technik ist also nicht die Membran und ein Spulenende geerdet, so daß die gesamte Hochspannung zwischen Membran und Spule liegt. Wegen der elektrischen Isolierung der Membran von beiden Spulenenden ist die Isolierstrecke für die gesamte Hochspannung gleich dem doppelten Abstand zwischen der Spule und der Membran, so daß die Gefahr von Durchschlägen äußerst gering ist.This object is achieved in that the membrane is electrically isolated from both ends of the surface coil. In contrast to the prior art, the membrane and one coil end are not earthed, so that the entire high voltage lies between the membrane and the coil. Because of the electrical insulation of the membrane from both coil ends, the insulating distance for the entire high voltage is twice the distance between the coil and the membrane, so that the risk of breakdown is extremely low.
Die Erfindung ist nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert.The invention is explained below with reference to an embodiment shown in the drawing.
In der Zeichnung ist ein Stoßwellenrohr 1 dargestellt, das auf seiner Applikationsseite von einem an einem Patienten anlegbaren elastischen Sack 2 und auf seiner gegenüberliegenden Seite von einer Membran 3 verschlossen ist. Der Raum zwischen den Komponenten 1, 2, 3 ist mit Wasser als Koppelmedium gefüllt. In ihm ist eine akustische Linse 4 zur Fokussierung der erzeugten Stoßwellen angeordnet. Die Stoßwellenerzeugung erfolgt mit Hilfe einer der Membran gegenüberliegenden Flächenspule 6, die spiralig gewickelt und von der Membran 3 durch eine Isolierstoffschicht 7 getrennt ist. Der eine Anschluß der Flächenspule 6 ist geerdet und der zweite Anschluß ist an einen Hochspannungsgenerator 8 zur Stoßwellenerzeugung anschaltbar.In the drawing, a shock wave tube 1 is shown, which is closed on its application side by an elastic bag 2 that can be placed on a patient and on its opposite side by a membrane 3. The space between components 1, 2, 3 is filled with water as the coupling medium. An acoustic lens 4 for focusing the generated shock waves is arranged in it. The shock wave is generated with the aid of a surface coil 6 opposite the membrane, which is spirally wound and separated from the membrane 3 by an insulating layer 7. One connection of the surface coil 6 is grounded and the second connection can be connected to a high-voltage generator 8 for generating shock waves.
Wird die Flächenspule 6 an den Hochspannungsgenerator 8 angeschaltet, so wird durch den so erzeugten Hochspannungsimpuls aufgrund der in der Membran 3 aus metallischem Material erzeugten Wirbelströme eine Abstoßung der Membran 3 bewirkt, wodurch sich eine Stoßwelle durch das Wasser im Stoßwellenrohr 1 bis zum Stein im Patienten fortpflanzt.If the surface coil 6 is switched on to the high-voltage generator 8, the high-voltage pulse generated in this way, due to the eddy currents generated in the membrane 3 from metallic material, causes the membrane 3 to be repelled, as a result of which a shock wave is caused by the water in the shock-wave tube 1 up to the stone in the patient reproduces.
Aus der Zeichnung geht hervor, daß die Membran 3 von beiden Enden 6a, 6b der Flächenspule 6 elektrisch isoliert ist. Die gesamte Isolierstrecke, die die maximale Hochspannung aushalten muß, ist daher gleich der doppe lten Dicke der Isolierstoffschicht 7. Die Gefahr von Überschlägen zwischen einer Stelle der Flächenspule 6 und der Membran 3 ist demgemäß äußerst gering. Würde ein Überschlag erfolgen, so würde er in der Regel zwischen dem Spulenende 6a, der Membran 3 und dem Spulenende 6b verlaufen. Daraus ergibt sich, daß die gesamte Isolierstrecke gleich dem doppelten Abstand zwischen der Flächenspule 6 und der Membran 3 ist, so daß auch bei dünner Isolierstoffschicht 7 eine ausreichende Isolation gewährleistet ist. It can be seen from the drawing that the membrane 3 is electrically insulated from both
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3634007 | 1986-10-06 | ||
| DE3634007 | 1986-10-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0263349A1 true EP0263349A1 (en) | 1988-04-13 |
Family
ID=6311160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87113850A Ceased EP0263349A1 (en) | 1986-10-06 | 1987-09-22 | Shock wave generator |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4920955A (en) |
| EP (1) | EP0263349A1 (en) |
| JP (1) | JPH0636808Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0361934A2 (en) * | 1988-09-30 | 1990-04-04 | Canon Kabushiki Kaisha | Exposure method |
| WO2020148433A1 (en) * | 2019-01-18 | 2020-07-23 | Storz Medical Ag | Combined shockwave and ultrasound source |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3917858A1 (en) * | 1989-06-01 | 1990-12-06 | Dornier Medizintechnik | COUPLING AREA FOR A LITHOTRIPTER |
| US5107404A (en) * | 1989-09-14 | 1992-04-21 | Astec International Ltd. | Circuit board assembly for a cellular telephone system or the like |
| DE3932745A1 (en) * | 1989-09-30 | 1991-04-18 | Dornier Medizintechnik | FLAT REEL |
| US5233972A (en) * | 1990-09-27 | 1993-08-10 | Siemens Aktiengesellschaft | Shockwave source for acoustic shockwaves |
| US6415180B1 (en) * | 1997-04-04 | 2002-07-02 | Cardiac Pacemakers, Inc. | Device and method for ventricular tracking and pacing |
| US6771565B2 (en) * | 2002-03-01 | 2004-08-03 | Lvb Systems Ltd. | Low voltage seismic sound source |
| TW201709948A (en) * | 2015-09-04 | 2017-03-16 | 寶健科技股份有限公司 | Invasive shockwave probe transducer structure |
| TWI548402B (en) * | 2015-09-04 | 2016-09-11 | 寶健科技股份有限公司 | Shockwave probe transducer structure |
| CN113925761A (en) * | 2021-11-16 | 2022-01-14 | 深圳市慧康精密仪器有限公司 | Shock wave therapeutic instrument for women |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1532008A (en) * | 1974-12-20 | 1978-11-15 | Huntex Ltd | Underwater transient sound generator having pressure compensation |
| 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 |
| EP0133665A2 (en) * | 1983-08-03 | 1985-03-06 | Siemens Aktiengesellschaft | Apparatus for the smashing at a distance of calculus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE3447440A1 (en) * | 1984-12-27 | 1986-07-03 | Siemens AG, 1000 Berlin und 8000 München | SHOCK SHAFT PIPE FOR THE CRUSHING OF CONCRETE |
| DE3502751A1 (en) * | 1985-01-28 | 1986-07-31 | Siemens AG, 1000 Berlin und 8000 München | SHOCK SHAFT PIPE WITH A LONG LIFETIME |
| DE3505894A1 (en) * | 1985-02-20 | 1986-08-21 | Siemens AG, 1000 Berlin und 8000 München | Shock wave tube with coil and diaphragm |
| DE3506583A1 (en) * | 1985-02-25 | 1986-08-28 | Siemens AG, 1000 Berlin und 8000 München | Shock wave generator having a freely movable plate |
-
1987
- 1987-09-22 EP EP87113850A patent/EP0263349A1/en not_active Ceased
- 1987-10-02 JP JP1987152131U patent/JPH0636808Y2/en not_active Expired - Lifetime
-
1988
- 1988-11-22 US US07/274,509 patent/US4920955A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1532008A (en) * | 1974-12-20 | 1978-11-15 | Huntex Ltd | Underwater transient sound generator having pressure compensation |
| 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 |
| EP0133665A2 (en) * | 1983-08-03 | 1985-03-06 | Siemens Aktiengesellschaft | Apparatus for the smashing at a distance of calculus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0361934A2 (en) * | 1988-09-30 | 1990-04-04 | Canon Kabushiki Kaisha | Exposure method |
| EP0361934A3 (en) * | 1988-09-30 | 1991-07-03 | Canon Kabushiki Kaisha | Exposure method |
| WO2020148433A1 (en) * | 2019-01-18 | 2020-07-23 | Storz Medical Ag | Combined shockwave and ultrasound source |
| US12082831B2 (en) | 2019-01-18 | 2024-09-10 | Storz Medical Ag | Combined shockwave and ultrasound source |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0636808Y2 (en) | 1994-09-28 |
| US4920955A (en) | 1990-05-01 |
| JPS6362108U (en) | 1988-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB NL |
|
| 17P | Request for examination filed |
Effective date: 19880506 |
|
| 17Q | First examination report despatched |
Effective date: 19900927 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
| 18R | Application refused |
Effective date: 19920529 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MAHLER, MATHIAS, DIPL.-ING. Inventor name: RATTNER, MANFRED |