EP0261999A1 - Apparat zur Erzeugung von Stosswellen mit einem rohrförmigen Element zur Begrenzung elektromagnetischer Verluste - Google Patents

Apparat zur Erzeugung von Stosswellen mit einem rohrförmigen Element zur Begrenzung elektromagnetischer Verluste Download PDF

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Publication number
EP0261999A1
EP0261999A1 EP87401488A EP87401488A EP0261999A1 EP 0261999 A1 EP0261999 A1 EP 0261999A1 EP 87401488 A EP87401488 A EP 87401488A EP 87401488 A EP87401488 A EP 87401488A EP 0261999 A1 EP0261999 A1 EP 0261999A1
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EP
European Patent Office
Prior art keywords
tubular element
electrodes
shock waves
advantageously
electric current
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.)
Granted
Application number
EP87401488A
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English (en)
French (fr)
Other versions
EP0261999B1 (de
Inventor
Bernard Lacruche
Gérard Hascoet
Dominique Cathignol
Jean-Louis Mestas
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.)
Institut National de la Sante et de la Recherche Medicale INSERM
Technomed International SA
Original Assignee
Institut National de la Sante et de la Recherche Medicale INSERM
Technomed International SA
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Application filed by Institut National de la Sante et de la Recherche Medicale INSERM, Technomed International SA filed Critical Institut National de la Sante et de la Recherche Medicale INSERM
Priority to AT87401488T priority Critical patent/ATE81268T1/de
Publication of EP0261999A1 publication Critical patent/EP0261999A1/de
Application granted granted Critical
Publication of EP0261999B1 publication Critical patent/EP0261999B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Definitions

  • the invention relates essentially to an apparatus for generating shock waves of high frequency in a liquid for the remote destruction of targets, such as concretions, the electrical power supply connection of which is arranged inside a tubular element limiting or preventing electromagnetic leaks.
  • This device comprises a shock wave generator device formed by a truncated ellipsoidal reflector 80 comprising a cavity 81 constituting a shock wave reflection chamber of the same truncated ellipsoidal shape.
  • a shock wave generator device formed by a truncated ellipsoidal reflector 80 comprising a cavity 81 constituting a shock wave reflection chamber of the same truncated ellipsoidal shape.
  • One of the two ellipsoid foci is disposed in the chamber opposite the truncated part, this chamber being filled with a liquid for transmitting shock waves 83, for example an oil.
  • the actual shock wave generating device usually comprises two electrodes 12, 13, arranged at least partially inside the chamber 81, said two electrodes being arranged to generate a discharge or electric arc at the focal point located in the chamber opposite the truncated part.
  • Means 10, 11 are also provided for instantaneously selectively delivering an electrical voltage to the two electrodes 12, 13 thereby causing the discharge or electric arc between the electrodes thereby generating shock waves in said liquid contained in the chamber (see FIG. 3 and column 7, line 51 to column 9, line 30).
  • an electric power generator 10 is provided, in particular a battery 34, selectively supplying a transformer 33 and a capacitor 11 (see column 5, line 64 to column 6, line 26).
  • This capacitor can be charged up to a voltage of 15,000 V to generate the electric arc or discharge between the electrodes selectively at predetermined intervals (column 9, lines 7 to 9 and 24 to 27).
  • the applied voltage value and the size of the capacitor depend on the nature of the use (column 9, lines 27 to 29).
  • This device is used in the medical field, in particular for the destruction of tissue (see column 3, lines 30 to 64). This device can also be used for exploring or stimulating various parts of the nervous system (column 3, lines 65 to 74).
  • This device can also be used for extracorporeal lithotripsy.
  • Document FR-A-2 247 195 also describes a similar device in which the liquid consists of water (page 3, lines 23-24).
  • the main object of the present invention is therefore to solve the new technical problem consisting in limiting or eliminating electromagnetic leaks due to the electrical power supply connection, in particular of the electrodes.
  • the present invention still further has the main aim of solving the new technical problem consisting in providing a device for generating shock waves of high frequency capable of obtaining better uniformity or constancy of the potential and current values generated during electrical discharge or electric arc between the electrodes, so as to produce reproducible or substantially constant shock waves.
  • an apparatus for generating shock waves of high frequency in a liquid for the remote destruction of targets, preferably constituted by concretions, such as renal lithiasis, biliaries, comprising a device for generating shock waves by electrical discharge between at least two electrodes disposed at least in part in a chamber filled with said liquid, and intermittently supplied with electric current advantageously from a source of high voltage electric current, by via a power supply connector, said generator device enabling said shock waves to be focused on said targets, characterized in that the connector for supplying electrical current to the electrodes is disposed inside a tubular element substantially closed, to limit or prevent electromagnetic leakage.
  • the supply connections thus arranged in the tubular element makes it possible to use a substantially constant length of the electrical conductors promoting the generation of a substantially constant high voltage from one device to another, allowing better uniformity of the shock waves and therefore the destruction of targets.
  • the device according to the invention is characterized in that the device abovementioned shock wave generator is secured to the aforementioned tubular element which is arranged vertically while being itself mounted to be displaced at any point in space, the tubular element advantageously being closed at its upper end by the generating device shock waves.
  • the tubular element is secured to a first plate which is mounted displaceable in vertical translation, along the axis Z, on one or more guide members in vertical translation, fixed on a second plate forming part of 'a table moving in the horizontal plane, along the xy axes.
  • the axis of displacement z of the tubular element coincides with the axis of revolution of the ellipsoidal reflector.
  • the aforementioned second plate is located below the plane of the aforementioned table x, y, at a certain distance from the latter, so as to create an insertion housing for the wave generator device. of choc.
  • the tubular element is guided at its upper end inside an annular bearing advantageously provided with seals.
  • the aforementioned connection of electrical current supply comprises in particular a capacitor and an intermediate device for closing the circuit between the electrodes, intermittently preferably of the "Spark Gap" type.
  • this intermediate device comprises two electrodes separated by a suitable distance between which is arranged a spark-generating element, for example a spark plug of the automotive type, this device being preferably swept by a gas current, advantageously formed by ar 'nitrogen.
  • the aforementioned capacitor is interposed on the supply conductor of one electrode, while the intermediate device is interposed on the supply conductor of the other electrode.
  • the shock wave generating apparatus is provided with a device for controlling the advancement of the electrodes.
  • This control device may be constituted by one described by the applicants: in the prior French patent application No. 8601380 or the earlier application No. 8,606,318.
  • the pneumatic connection here controlling the advancement of the electrodes 4 is audsi disposed in the tubular element.
  • shock wave generating apparatus is provided with a device for positioning in the space of an exploration probe, such as for example described in the prior application of the applicants FR- 8606319, that the power supply connector for this exploration device is still placed in the aforementioned tubular element.
  • the apparatus comprises means for detecting the vertical position of the tubular element and the position in the x, y plane of the aforementioned table, transmitting data to a receiving center, integrating these values to correctly position the shock wave generating device relative to the target to be destroyed cited above.
  • the invention makes it possible to bring together practically all of the electrical and pneumatic supply connections for all the devices, elements or organs of the apparatus in a tubular element then in a way playing the role of Faraday cage for limit or prevent electromagnetic leaks which could give rise to harmful effects.
  • this integration results in using essentially constant lengths of conductors or similar conduits.
  • an apparatus for generating shock waves of high frequency in a liquid 2 for the distant destruction of targets, preferably constituted by concretions, such as renal lithiasis , biliary, comprises a device 4 generating shock waves by electrical discharge between at least two electrodes 6, 8 disposed at least in part in a chamber 10 here shown of ellipsoidal shape, filled with liquid 2, and supplied intermittently advantageously from a high voltage electric current source (not shown), via a power supply connector 12.
  • connection 12 for supplying electric current to the electrodes 6, 8 is disposed inside a tubular element 16 which is substantially closed, in order to limit or prevent electromagnetic leakage, as is clearly visible on the figure 1.
  • This connection 12 for supplying electrical current to the electrodes 6, 8 comprises in particular a capacitor 18 capable of storing a voltage of 10,000 to 20,000 V, interposed for example on the conductor 20 for supplying electrical current to the electrode. 8 from the electric current source 22 symbolized in FIG. 5 combined with a high voltage transformer 24, and resulting in a sliding contact 26 in permanent sliding contact with the electrode-carrying element 9.
  • This power supply connector 12 also advantageously comprises an intermediate device 28 for closing the electrical circuit between the electrodes 6, 8 intermittently, preferably of the "Spark Gap" type, interposed in the example shown on the other supply conductor 30 of the other electrode 6.
  • one of these conductors 20 or 30 is connected to earth T as symbolized in FIG. 5.
  • This intermediate device 28 is advantageously constituted by a housing 32 in which two intermediate electrodes 34, 36 are arranged at a distance, this distance being sufficient to interrupt the electrical circuit.
  • This electrical circuit is closed by the generation of sparks from a spark generating element 38, for example a candle.
  • a spark generating element 38 for example a candle.
  • connection control feeding electrodes 6, 8 is arranged in the tubular member 16 and includes, essentially in the case of the feeding device which is the subject of the earlier application No. 8606318, cylinders electrically or pneumatically controlled, by respective supply conduits such as conduit 44.
  • the shock wave generating device 4 is mounted movable at any point in the space relative to the frame 50, while being secured to the tubular element 16 by means of an intermediate support element 52 comprising a flange 54 which comes to bear on the upper end of the tubular element 16 thereby closing it completely and advantageously in a sealed manner.
  • the lower end is also closed by a removable element 55.
  • the tubular element 16 is itself mounted displaceable at any point in space.
  • the tubular element 16 is thus secured to a first plate 56 which is mounted movable in vertical translation, along the axis z, on one or more guide members 58, 60.
  • These guide members in vertical translation 58, 60 are fixed on a second plate 62 forming part of a table 64 moving in the horizontal plane along the axes x, y as is clearly understandable from FIG. 2.
  • the second plate 62 is linked to table 64 by rigid connecting elements 66, 67, 68, 69.
  • the second plate 62 is located below the plane of the table 64, x, y, at a certain distance d from the latter so as to create an insertion housing for the shock wave generating device. 4, thereby making it possible to minimize the volume occupied by the device.
  • the tubular member 16 is guided at its upper end 16 is inside an annular bearing 70 advantageously provided with seals 72, 74, 76, 78, respectively at its upper edge , at its lower edge, and at its lateral edges.
  • this annular bearing 70 comprises a lug 74 for fixing to the chassis 50.
  • the vertical translational movement of the tubular element 16 supporting the shock wave generator device 4, along the axis z, is obtained by a drive system 80 for example of the rack type defined by one or more threaded rods 82, 84 fixed to the second plate 62, constituting an upper plate.
  • the drive system 80 is fixed to the tube 16 by conventional fastening means 86 and comprises a drive member 88 with toothed wheels (not shown) meshing on the threaded rod 82 and a mechanical drive transmission 90, 92 is advantageously provided. with bevel gear 94, 96 so as to also mesh on the threaded rod 84 opposite the drive member 88.
  • the mechanical transmission includes single or double cardan devices 98, 100.
  • the table x, y 64 is mounted movable in translation along the axis x by sliding relative to two parallel sliding tubes 102, 104 themselves mounted to sliding in translation along the axis y relative to two parallel tubes arranged along the axis y 106, 108 mounted on the chassis 50 of the device.
  • the sliding tubes 102, 104 are arranged in respective fixed relationship by being mounted on a rigid support frame 110.
  • the movement of the table on the x and y axes is obtained respectively by means of jacks 112, 114 which can be penumatically controlled or advantageously electric.
  • the apparatus according to the invention also comprises means for detecting the vertical position of the tubular element 16, referenced 116 and visible in FIG. 3, of the position in the x, y plane of the table 64, respectively referenced 118, 120 and which can be seen clearly in FIG. 2.
  • they may be potentiometer devices, which make it possible to transmit data to a receiving center integrating these values to correctly position the generator device 4 relative to the target to be destroyed by appropriate control of the drive members in vertical translation such as the drive motors 88 and in translation along the axes x, y and constituted by the jacks 112, 114, respectively.
  • the nature of the material constituting the tubular element is naturally not critical and is appropriate for the envisaged function of reduction or elimination of electromagnetic leaks as for a Faraday cage. So everything suitable material for the realization of a Faraday cage is adequate, in particular a metal such as iron or cast iron or a steel, and in particular a stainless steel.
  • the invention therefore provides decisive, unexpected technical advantages relative to the prior art.
  • the invention naturally includes all the means constituting technical equivalents of the means described as well as their various combinations.
  • power supply connections all the means, elements, organs playing a role in the supply of the targeted devices, such as the electrodes, the jacks, etc.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Surgical Instruments (AREA)
EP87401488A 1986-06-30 1987-06-29 Apparat zur Erzeugung von Stosswellen mit einem rohrförmigen Element zur Begrenzung elektromagnetischer Verluste Expired - Lifetime EP0261999B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87401488T ATE81268T1 (de) 1986-06-30 1987-06-29 Apparat zur erzeugung von stosswellen mit einem rohrfoermigen element zur begrenzung elektromagnetischer verluste.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8609474A FR2600520B1 (fr) 1986-06-30 1986-06-30 Appareil de generation d'ondes de choc de frequence elevee dans un liquide pour la destruction a distance de cibles, telles que des concretions dont la connectique d'alimentation en courant electrique est disposee a l'interieur d'un element tubulaire limitant ou empechant les fuites electromagnetiques
FR8609474 1986-06-30

Publications (2)

Publication Number Publication Date
EP0261999A1 true EP0261999A1 (de) 1988-03-30
EP0261999B1 EP0261999B1 (de) 1992-10-07

Family

ID=9336877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401488A Expired - Lifetime EP0261999B1 (de) 1986-06-30 1987-06-29 Apparat zur Erzeugung von Stosswellen mit einem rohrförmigen Element zur Begrenzung elektromagnetischer Verluste

Country Status (6)

Country Link
US (1) US4915094A (de)
EP (1) EP0261999B1 (de)
JP (1) JPS6324932A (de)
AT (1) ATE81268T1 (de)
DE (2) DE3782132T2 (de)
FR (1) FR2600520B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2623080A1 (fr) * 1987-11-16 1989-05-19 Technomed Int Sa Procede de fabrication d'un dispositif generateur d'ondes de choc indolores et dispositif et appareil ainsi fabriques
FR2640090B1 (fr) * 1988-12-06 1991-03-29 Technomed Int Sa Dispositif formant eclateur comprenant un chemisage interieur en materiau refractaire electriquement isolant et appareil generateur d'ondes de choc, notamment pour la lithotritie hydraulique, pourvu d'un tel dispositif
US5997499A (en) * 1998-06-04 1999-12-07 Alcon Laboratories, Inc. Tip for a liquefaction handpiece
US5989212A (en) * 1998-06-04 1999-11-23 Alcon Laboratories, Inc. Pumping chamber for a liquefaction handpiece having a countersink electrode
US6004284A (en) * 1998-06-04 1999-12-21 Alcon Laboratories, Inc. Surgical handpiece

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2283285A (en) * 1938-05-25 1942-05-19 Pohlman Reimar Massage
US2559227A (en) * 1947-05-24 1951-07-03 Interval Instr Inc Shock wave generator

Family Cites Families (19)

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AT309663B (de) * 1971-05-14 1973-08-27 Phil Heinz Schmidt Kloiber Dr Einrichtung zum Zerstören von Steinen in der Harnblase, im Harnleiter, in der Niere u. dgl.
JPS5317993B2 (de) * 1972-07-10 1978-06-12
CH574734A5 (de) * 1973-10-12 1976-04-30 Dornier System Gmbh
JPS50119392A (de) * 1974-03-06 1975-09-18
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
JPS5469302A (en) * 1977-11-14 1979-06-04 Mitsubishi Electric Corp Shielding device for leakage radio waves of electrical discharge machine
US4311147A (en) * 1979-05-26 1982-01-19 Richard Wolf Gmbh Apparatus for contact-free disintegration of kidney stones or other calculi
GB2094388B (en) * 1981-03-05 1985-11-27 Kidde Co Presto Lock Div Luggage latching system
DE3146626C2 (de) * 1981-11-25 1985-10-10 Dornier System Gmbh, 7990 Friedrichshafen Vorrichtung zum Zerstören von im Körper eines Lebewesens befindlichen Konkrementen
US4535771A (en) * 1981-12-22 1985-08-20 Olympus Optical Co., Ltd. Calculus disintegrating apparatus
DE3210919C2 (de) * 1982-03-25 1986-07-10 Dornier System Gmbh, 7990 Friedrichshafen Vorrichtung zum zerkleinern von Konkrementen in Körpern von Lebewesen
DE3241026C2 (de) * 1982-11-06 1986-12-04 Dornier System Gmbh, 7990 Friedrichshafen Reflektor zur Fokussierung von Stoßwellen
DE3316837C2 (de) * 1983-05-07 1986-06-26 Dornier System Gmbh, 7990 Friedrichshafen Einrichtung zur Erzeugung von Stoßwellen mittels einer Funkenstrecke für die berührungsfreie Zertrümmerung von Konkrementen in Körpern von Lebewesen
DE3320998C2 (de) * 1983-06-10 1987-11-12 Dornier System Gmbh, 7990 Friedrichshafen Vorrichtung zum Anpassen eines Stoßwellenfeldes
EP0131654A1 (de) * 1983-07-19 1985-01-23 N.V. Optische Industrie "De Oude Delft" Einrichtung zum berührungsfreien Zertrümmern von im Körper befindlichen steinigen Gegenständen mittels Schallschockwellen
US4597388A (en) * 1983-12-15 1986-07-01 Trutek Research, Inc. Apparatus for removing cataracts
US4610249A (en) * 1984-05-08 1986-09-09 The Johns Hopkins University Means and method for the noninvasive fragmentation of body concretions
US4620545A (en) * 1984-10-31 1986-11-04 Trutek Research, Inc. Non-invasive destruction of kidney stones
FR2593383B1 (fr) * 1986-01-29 1990-07-06 Technomed Int Sa Appareil generateur d'ondes de choc de frequence elevee pourvu d'un ecran diminuant les fuites electriques et son utilisation pour la destruction de cibles telles que des tissus concretions, notamment des calculs renaux, biliaires

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2283285A (en) * 1938-05-25 1942-05-19 Pohlman Reimar Massage
US2559227A (en) * 1947-05-24 1951-07-03 Interval Instr Inc Shock wave generator

Also Published As

Publication number Publication date
FR2600520B1 (fr) 1990-09-21
FR2600520A1 (fr) 1987-12-31
DE3782132T2 (de) 1993-05-06
DE3782132D1 (de) 1992-11-12
ATE81268T1 (de) 1992-10-15
EP0261999B1 (de) 1992-10-07
US4915094A (en) 1990-04-10
JPS6324932A (ja) 1988-02-02
DE261999T1 (de) 1988-07-21

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