EP0590177B1 - Dispositif générateur d'ondes de choc pour la destruction à distance des concrétions dans le corps vivant - Google Patents

Dispositif générateur d'ondes de choc pour la destruction à distance des concrétions dans le corps vivant Download PDF

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Publication number
EP0590177B1
EP0590177B1 EP92116582A EP92116582A EP0590177B1 EP 0590177 B1 EP0590177 B1 EP 0590177B1 EP 92116582 A EP92116582 A EP 92116582A EP 92116582 A EP92116582 A EP 92116582A EP 0590177 B1 EP0590177 B1 EP 0590177B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
electrodes
shock
concrements
electrical discharge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92116582A
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German (de)
English (en)
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EP0590177A1 (fr
Inventor
Walter Uebelacker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HMT High Medical Technologies Entwicklungs und Vertriebs AG
Original Assignee
HMT High Medical Technologies Entwicklungs und Vertriebs AG
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 HMT High Medical Technologies Entwicklungs und Vertriebs AG filed Critical HMT High Medical Technologies Entwicklungs und Vertriebs AG
Priority to EP92116582A priority Critical patent/EP0590177B1/fr
Priority to ES92116582T priority patent/ES2097848T3/es
Priority to DE59207731T priority patent/DE59207731D1/de
Priority to JP5159122A priority patent/JP2584584B2/ja
Priority to US08/221,278 priority patent/US5458652A/en
Publication of EP0590177A1 publication Critical patent/EP0590177A1/fr
Application granted granted Critical
Publication of EP0590177B1 publication Critical patent/EP0590177B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/04—Sound-producing devices
    • G10K15/06—Sound-producing devices using electric discharge

Definitions

  • the invention relates to a device for destroying concrements with the features specified in the preamble of claim 1.
  • a device of this type is known from DE-PS 26 35 635.
  • the electrical discharge between the electrodes in a liquid takes place in the first focal point of an ellipsoid of revolution.
  • a shock wave propagates due to the explosive evaporation of the liquid, which is focused in the second focal point of the ellipsoid.
  • the concretions to be crushed In this second focal point are the concretions to be crushed.
  • low-frequency components generated by the cavitation bubble are also emitted. Due to the high amplitude, these low-frequency sound components in the audible range disturb both the patient and the personnel in the treatment room. In addition, the low-frequency sound components contribute significantly to pain sensation during therapy.
  • WO-A-92/12513 describes a device for generating an electrical discharge between two electrodes, between which an electrically conductive liquid medium is present. This medium is located with the electrodes within a substantially sealed container. This container does not need to be rigid in terms of function and can, for example, be made of latex.
  • the invention is based on the object of designing a device of the type described in the introduction in such a way that the low-frequency components are damped when a shock wave is generated.
  • the use of a sleeve surrounding the electrodes reduces the low-frequency sound components.
  • the shock wave generated by the discharge can penetrate the sleeve and continues in the liquid medium surrounding it.
  • the sleeve ensures that the maximum gas bubble radius is reduced because the unimpeded expansion of the gas bubbles produced during electrical discharge is avoided. This results in a reduction in the sound power generated by the gas bubble.
  • the noise exposure of the patient and the staff is thus significantly reduced without reducing the efficiency of the stone crushing. Furthermore, a largely pain-free stone treatment is made possible.
  • the electrodes 4 and 5 are arranged in a sleeve 7.
  • the sleeve 7 is closed at the top and connected pressure-tight to the device at the bottom.
  • a liquid medium 6, which also surrounds the electrodes 4 and 5.
  • the wall thickness of the sleeve 7 is smaller than the wavelength of the shock wave so that it is not reflected from the inside of the sleeve.
  • the wall thickness of the sleeve can also be chosen larger.
  • the electrode 5 is insulated except for a region around the electrode 4 and extends perpendicular to the electrode 4. This ensures that the electrical discharge in the non-insulated region of the electrode 5 fluctuates spatially in statistical terms, which results in an increased shattering volume in the second focal point of the ellipsoid benefits.
  • the inner conductor 1 is connected to the electrode 4 and the outer conductor 3 is connected to the electrode 5.
  • the sleeve 7 is fixed to the device via an insulator 8 or detachably connected by means of a thread.
  • the sleeve 7 forms the outer conductor 3, and the electrode 5 is electrically connected to the sleeve. In order to avoid partial discharge on the inner wall of the sleeve, it is electrically insulated from the electrode 4 by an insulator 10.
  • the electrode arrangement shown in FIG. 3 is bent in an L-shaped manner, and as in FIG. 1, the electrode symmetry axes are perpendicular to one another.
  • the device designed according to the invention works as follows: At the time of the electrical discharge between the electrodes 4 and 5, the liquid medium 6 lying between these electrodes is evaporated explosively and heated up strongly. The resulting plasma drives a shock wave in front of it until the speed of propagation of the plasma is less than the speed of propagation of sound in water. Then a shock wave separates from the plasma in a quasi-spherical manner.
  • the shock wave can penetrate the wall of the sleeve with appropriate dimensions.
  • the cavitation bubble created by the electrical discharge expands and allows the pressure in the sleeve to rise until the volume and temperature of the gas bubble have become dependent on the pressure. Then the gas bubble collapses again.
  • the increased pressure in the sleeve reduces the maximum gas bubble radius, which corresponds to a reduction in the sound power generated by the cavitation bubble.

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

Claims (6)

  1. Appareil pour générer des ondes de choc par un éclateur à étincelles utilisant deux électrodes (4, 5), les électrodes étant situées dans un milieu liquide (6), lequel se vaporise sous forme d'explosion au moment du claquage électrique entre les électrodes et générant ainsi des ondes de choc pour la destruction sans contact des concrétions dans le corps des êtres vivants, les électrodes étant disposées dans un manchon (7) qui les entoure d'une façon étanche, caractérisé en ce que le manchon (7) évitant une expansion libre des bulles de gaz se formant lors de la décharge électrique est pourvu à son extrémité supérieure d'un amortisseur amortissant l'onde primaire acoustique.
  2. Appareil selon la revendication 1 caractérisé en ce que le manchon (7) est en métal et présente une épaisseur de paroi inférieure à la longueur d'onde de l'onde de choc.
  3. Appareil selon la revendication 2 caractérisé en ce que le manchon (7) a une épaisseur comprise entre 0,1 mm et 0,6 mm.
  4. Appareil selon la revendication 1 caractérisé en ce que le manchon (7) est en plastique ayant une impédance acoustique correspondant à celle de l'eau.
  5. Appareil selon la revendication 4 caractérisé en ce que le manchon (7) a une épaisseur de paroi comprise entre 1 mm et 10 mm.
  6. Appareil selon l'une des revendications 2 et 3 caractérisé en ce que le manchon (7) métallique est utilisé comme conducteur extérieur.
EP92116582A 1992-09-28 1992-09-28 Dispositif générateur d'ondes de choc pour la destruction à distance des concrétions dans le corps vivant Expired - Lifetime EP0590177B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP92116582A EP0590177B1 (fr) 1992-09-28 1992-09-28 Dispositif générateur d'ondes de choc pour la destruction à distance des concrétions dans le corps vivant
ES92116582T ES2097848T3 (es) 1992-09-28 1992-09-28 Aparato para la generacion de ondas de choque para la destruccion sin contacto de concreciones en cuerpos de organismos.
DE59207731T DE59207731D1 (de) 1992-09-28 1992-09-28 Gerät zum Erzeugen von Stosswellen für die berührungsfreie Zerstörung von Konkrementen in Körpern von Lebewesen
JP5159122A JP2584584B2 (ja) 1992-09-28 1993-06-29 衝撃波の生成装置
US08/221,278 US5458652A (en) 1992-09-28 1994-03-31 Device for generating shock waves for non contact disintegration of calculi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92116582A EP0590177B1 (fr) 1992-09-28 1992-09-28 Dispositif générateur d'ondes de choc pour la destruction à distance des concrétions dans le corps vivant

Publications (2)

Publication Number Publication Date
EP0590177A1 EP0590177A1 (fr) 1994-04-06
EP0590177B1 true EP0590177B1 (fr) 1996-12-18

Family

ID=8210068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116582A Expired - Lifetime EP0590177B1 (fr) 1992-09-28 1992-09-28 Dispositif générateur d'ondes de choc pour la destruction à distance des concrétions dans le corps vivant

Country Status (5)

Country Link
US (1) US5458652A (fr)
EP (1) EP0590177B1 (fr)
JP (1) JP2584584B2 (fr)
DE (1) DE59207731D1 (fr)
ES (1) ES2097848T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008012539A1 (de) 2008-03-04 2009-09-10 Robert Bosch Gmbh Verfahren zum Recyclen von Kunststoffen
EP2783754A1 (fr) 2013-03-28 2014-10-01 HLW-LSA GmbH Hoch-Leistungs Werkstoffe Dispositif de broyage de solides

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532219C2 (de) * 1995-09-01 1997-07-31 Tzn Forschung & Entwicklung Energiewandler zur Hochleistungspulserzeugung
US7189209B1 (en) 1996-03-29 2007-03-13 Sanuwave, Inc. Method for using acoustic shock waves in the treatment of a diabetic foot ulcer or a pressure sore
US6390995B1 (en) 1997-02-12 2002-05-21 Healthtronics Surgical Services, Inc. Method for using acoustic shock waves in the treatment of medical conditions
US6368292B1 (en) 1997-02-12 2002-04-09 Healthtronics Inc. Method for using acoustic shock waves in the treatment of medical conditions
DE19718513C5 (de) * 1997-05-02 2010-06-02 Sanuwave, Inc., Vorrichtung zur Erzeugung akustischer Stoßwellen, insbesondere für die medizinische Anwendung
DE19718512C1 (de) * 1997-05-02 1998-06-25 Hmt Ag Verfahren und Vorrichtung zum Erzeugen von Stoßwellen für medizinische Anwendungen
EP0911804B1 (fr) 1997-10-24 2007-05-09 MTS Europe GmbH Méthode pour l'ajustement automatique de la distance entre les électrodes d'un éclateur dans des dispositifs d'ondes de choc électrohydraulique
DE102006022416A1 (de) * 2006-05-13 2007-11-22 Ast Gmbh Vorrichtung zur Erzeugung von Stoßwellen
CA2787528C (fr) 2010-01-19 2014-12-16 Christopher C. Capelli Appareils et systemes pour generer des ondes de choc a haute frequence, et procedes d'utilisation
US11865371B2 (en) 2011-07-15 2024-01-09 The Board of Regents of the University of Texas Syster Apparatus for generating therapeutic shockwaves and applications of same
DE102012103884A1 (de) 2012-05-03 2013-11-07 Fritz Winter Eisengiesserei Gmbh & Co. Kg Verfahren zum Gießen eines mit mindestens einer Durchgangsöffnung versehenen Gussteils
US10835767B2 (en) 2013-03-08 2020-11-17 Board Of Regents, The University Of Texas System Rapid pulse electrohydraulic (EH) shockwave generator apparatus and methods for medical and cosmetic treatments
WO2016183307A1 (fr) 2015-05-12 2016-11-17 Soliton, Inc. Procédés de traitement de la cellulite et du tissu adipeux sous-cutané
DE202015005070U1 (de) 2015-07-15 2016-10-24 MTS Medical UG (haftungsbeschränkt) Vorrichtung zur Verringerung des Elektrodenabbrands bei der elektrohydraulischen Stoßwellenerzeugung
TWI793754B (zh) 2016-07-21 2023-02-21 美商席利通公司 產生醫療脈衝之裝置、用於產生醫療脈衝之裝置、以及產生脈衝之方法
CA3053796A1 (fr) 2017-02-19 2018-08-23 Soliton, Inc. Rupture optique selective induite par laser dans un milieu biologique

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GB1479795A (en) * 1975-04-17 1977-07-13 Electricity Council Method and apparatus for increasing contact area in a plural-phase system
DE2635635C3 (de) * 1976-08-07 1979-05-31 Dornier System Gmbh, 7990 Friedrichshafen Funkenstrecke zur Erzeugung von Stoßwellen für die berührungsfreie Zerstörung von Konkrementen in Körpern von Lebewesen
SU1227185A1 (ru) * 1984-05-23 1986-04-30 Предприятие П/Я А-7094 Устройство дл электрогидравлического дроблени конкрементов в теле человека
DE3543881C1 (de) * 1985-12-12 1987-03-26 Dornier Medizintechnik Unterwasser-Elektrode fuer die beruehrungsfreie Lithotripsie
CS261485B1 (en) * 1986-10-29 1989-02-10 Jiri Mudr Rndr Benes Device for clinic out-of-body lithotripsy of gall stones
EP0326620A1 (fr) * 1987-12-28 1989-08-09 Northgate Research, Inc. a corporation of the state of Illinois Isolation d'un gaz dans l'éclateur hydraulique d'un générateur d'ondes de choc
US4715376A (en) * 1986-11-07 1987-12-29 Trutek Research, Inc. Isolation of gas in hydraulic spark gap shock wave generator
DE3713884A1 (de) * 1987-04-25 1988-11-03 Dornier System Gmbh Verbindung einer metallhuelse mit einer in ihrer bohrung befindlichen kunststoffhuelse
SU1708314A1 (ru) * 1987-12-30 1992-01-30 Предприятие П/Я А-7094 Подводный разр дник дл дроблени конкрементов
DE3804993C1 (fr) * 1988-02-18 1989-08-10 Dornier Medizintechnik Gmbh, 8034 Germering, De
DE3833862A1 (de) * 1988-10-05 1990-04-19 Dornier Medizintechnik Kombinierte stosswellenquelle
FR2671239B1 (fr) * 1990-12-26 1994-09-30 Technomed Int Sa Procede et dispositif interposant un liquide electriquement conducteur entre des electrodes et appareil d'ondes de choc en comportant application.
US5251614A (en) * 1989-06-30 1993-10-12 Technomed International Method and device interposing an electrically conductive liquid between electrodes and shockwave apparatus for method and device
AU7072891A (en) * 1990-01-09 1991-08-05 Candela Laser Corporation Method and apparatus for fragmentation of hard substances
DE4016054A1 (de) * 1990-05-18 1991-11-21 Dornier Medizintechnik Funkenstrecke fuer die lithotripsie

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008012539A1 (de) 2008-03-04 2009-09-10 Robert Bosch Gmbh Verfahren zum Recyclen von Kunststoffen
EP2783754A1 (fr) 2013-03-28 2014-10-01 HLW-LSA GmbH Hoch-Leistungs Werkstoffe Dispositif de broyage de solides
DE102013005392A1 (de) 2013-03-28 2014-10-02 HLW-LSA GmbH Vorrichtung zum Zerkleinern von Feststoffen

Also Published As

Publication number Publication date
EP0590177A1 (fr) 1994-04-06
JPH06114068A (ja) 1994-04-26
DE59207731D1 (de) 1997-01-30
US5458652A (en) 1995-10-17
JP2584584B2 (ja) 1997-02-26
ES2097848T3 (es) 1997-04-16

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