EP0250791A1 - Eclateur muni de pointes d'électrode ayant une géométrie différente - Google Patents

Eclateur muni de pointes d'électrode ayant une géométrie différente Download PDF

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Publication number
EP0250791A1
EP0250791A1 EP87106768A EP87106768A EP0250791A1 EP 0250791 A1 EP0250791 A1 EP 0250791A1 EP 87106768 A EP87106768 A EP 87106768A EP 87106768 A EP87106768 A EP 87106768A EP 0250791 A1 EP0250791 A1 EP 0250791A1
Authority
EP
European Patent Office
Prior art keywords
spark gap
tips
electrode tips
electrodes
shock waves
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.)
Withdrawn
Application number
EP87106768A
Other languages
German (de)
English (en)
Inventor
Klaus Dipl.-Ing. Pimiskern
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.)
Dornier GmbH
Original Assignee
Dornier GmbH
Dornier System GmbH
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 Dornier GmbH, Dornier System GmbH filed Critical Dornier GmbH
Publication of EP0250791A1 publication Critical patent/EP0250791A1/fr
Withdrawn legal-status Critical Current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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T9/00—Spark gaps specially adapted for generating oscillations

Definitions

  • the invention relates to a spark gap with two electrodes, which have a different geometry, for generating shock waves for the contact-free comminution of concrements in bodies of living beings.
  • a device with a focusing chamber for crushing concrements, which are located in the body of a living being, is known, the focusing chamber being part of an ellipsoid of revolution, in the focus of which shock waves can be generated by spark discharge.
  • the chamber is filled with a liquid and the stone to be crushed is in the second focal point of the ellipsoid.
  • electrical underwater spark detection is carried out in one Capacitor stored energy is converted into mechanical shock wave energy.
  • shock waves of high amplitude (> 1 kber with small pulse lengths ⁇ 1 psec) can be generated almost punctiformly in the second focal point, which can in this way comminute concrements located in the bodies of living beings into removable fragments.
  • a spark gap for generating shock waves with electrodes protruding from a holder is known in embodiments in which one electrode is extended and returned via a loop, so that the electrodes are axially opposite one another, and on the other hand an electrode is designed as a yoke or cage, which carries a sleeve with a bore for fastening an electrode tip.
  • the yoke or the cage can consist of two or more metal brackets.
  • the invention has for its object to develop a spark gap with electrodes, in which the service life of the electrodes is significantly longer than that of conventional electrodes and their displacement of the first focal point is very small, so that a constant pressure curve of the shock wave amplitudes can be achieved.
  • the pressure course of the shock wave amplitudes must be kept as constant as possible.
  • the first focal point it is necessary to maintain the first focal point as precisely as possible, since the reflector geometry is designed such that the focusing of the almost spherical-geometric shock waves generated in the first focal point is only optimal in the second focal point. Even a slight shift in the first focal point, for example due to different erosion of the electrode tips, means that the shock waves can no longer be focused exactly in the second focal point and the concrements located there are not crushed as best as possible.
  • the present invention makes it possible to keep the displacement of the first focus point as small as possible.
  • the focus point 8 In the middle of the spark channel 2 is the focus point 8, which, due to the adapted diameter of the electrode tips which are subject to different erosion, always remains exactly positioned at this point even with a higher number of shock waves generated.
  • the edges of the electrode tips 4 and 6 are deburred, for example, by drum grinding. This avoids the creation of sharp edges and points where the spark would prefer to jump over.
  • the electrode tips 4 and 6 can be flattened. Their profile is frustoconical with a cone angle of 20 °.
  • the tips designed in this way can be produced in a geometrically reproducible manner than conventional round tips.
  • the production tolerance dimension of + 0.1 mm used for round tips can be reduced to + 0.02 mm for flattened tips. Small manufacturing tolerances mean higher reproducibility of the generated shock waves and therefore more constant pressure profiles.
  • FIGS 2 and 3 show advantageous embodiments of the invention, in which the tubular outer conductor 10 merges into a cage 12, which consists of several metal brackets 20, according to DE-PS 26 35 635.
  • the electrode tip 4 is welded directly to the brackets 20, which are encased with an insulating plastic sleeve 22.
  • the electrode 6 is held in a plastic damper 24.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Surgical Instruments (AREA)
  • Spark Plugs (AREA)
  • Disintegrating Or Milling (AREA)
EP87106768A 1986-07-03 1987-05-09 Eclateur muni de pointes d'électrode ayant une géométrie différente Withdrawn EP0250791A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3622352 1986-07-03
DE3622352A DE3622352C1 (de) 1986-07-03 1986-07-03 Funkenstrecke mit Elektrodenspitzen unterschiedlicher Geometrie

Publications (1)

Publication Number Publication Date
EP0250791A1 true EP0250791A1 (fr) 1988-01-07

Family

ID=6304312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106768A Withdrawn EP0250791A1 (fr) 1986-07-03 1987-05-09 Eclateur muni de pointes d'électrode ayant une géométrie différente

Country Status (4)

Country Link
US (1) US4905673A (fr)
EP (1) EP0250791A1 (fr)
JP (1) JPS6319139A (fr)
DE (1) DE3622352C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0226047A2 (fr) * 1985-12-12 1987-06-24 Dornier Medizintechnik Gmbh Electrode immergée pour la lithotripsy sans contact
FR2693306A1 (fr) * 1992-07-02 1994-01-07 Technomed Int Sa Electrode de décharge électrique à bague mobile, dispositif de décharge, dispositif générateur d'ondes de pression et appareil de traitement en comportant application.

Families Citing this family (31)

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DE3904049C1 (fr) * 1989-02-10 1990-06-28 Storz Medical Ag, Kreuzlingen, Ch
FR2649252B1 (fr) * 1989-06-30 1993-01-15 Technomed Int Sa Procede et dispositif de decharge d'un arc electrique dans un liquide electriquement conducteur et application au lithotrypteur
US5420473A (en) * 1993-10-12 1995-05-30 Thomas; Howard C. Spark gap electrode assembly for lithotripters
ATE362163T1 (de) 1997-10-24 2007-06-15 Mts Europ Gmbh Methode zur automatischen einstellung des elektrodenabstandes einer funkenstrecke bei elektrohydraulischen stosswellensystemen
DE10151565B4 (de) * 2001-10-23 2004-09-30 Diehl Munitionssysteme Gmbh & Co. Kg Mikrowellengenerator
US6916374B2 (en) * 2002-10-08 2005-07-12 Micron Technology, Inc. Atomic layer deposition methods and atomic layer deposition tools
DE10313286B3 (de) * 2003-03-25 2005-01-20 Diehl Munitionssysteme Gmbh & Co. Kg Mikrowellengenerator
US7896822B2 (en) * 2006-11-30 2011-03-01 Scoseria Jose P Multiple lithotripter electrode
US8814921B2 (en) 2008-03-06 2014-08-26 Aquabeam Llc Tissue ablation and cautery with optical energy carried in fluid stream
US9232959B2 (en) 2007-01-02 2016-01-12 Aquabeam, Llc Multi fluid tissue resection methods and devices
US20100036294A1 (en) * 2008-05-07 2010-02-11 Robert Mantell Radially-Firing Electrohydraulic Lithotripsy Probe
US9504604B2 (en) * 2011-12-16 2016-11-29 Auris Surgical Robotics, Inc. Lithotripsy eye treatment
CN104203078B (zh) 2012-02-29 2018-04-20 普罗赛普特生物机器人公司 自动化图像引导的组织切除和处理
US10383765B2 (en) 2012-04-24 2019-08-20 Auris Health, Inc. Apparatus and method for a global coordinate system for use in robotic surgery
US9198825B2 (en) * 2012-06-22 2015-12-01 Sanuwave, Inc. Increase electrode life in devices used for extracorporeal shockwave therapy (ESWT)
US20140052146A1 (en) * 2012-08-17 2014-02-20 Chip Curtis Electrohydraulic Lithotripsy Probe and Electrical Source for an Electrohydraulic Lithotripsy Probe
US10231867B2 (en) 2013-01-18 2019-03-19 Auris Health, Inc. Method, apparatus and system for a water jet
US10149720B2 (en) 2013-03-08 2018-12-11 Auris Health, Inc. Method, apparatus, and a system for facilitating bending of an instrument in a surgical or medical robotic environment
US9867635B2 (en) 2013-03-08 2018-01-16 Auris Surgical Robotics, Inc. Method, apparatus and system for a water jet
US10080576B2 (en) 2013-03-08 2018-09-25 Auris Health, Inc. Method, apparatus, and a system for facilitating bending of an instrument in a surgical or medical robotic environment
CA3160475A1 (fr) 2013-03-11 2014-09-18 Northgate Technologies Inc. Lithotriteur electrohydraulique non focalise
US10744035B2 (en) 2013-06-11 2020-08-18 Auris Health, Inc. Methods for robotic assisted cataract surgery
US10426661B2 (en) 2013-08-13 2019-10-01 Auris Health, Inc. Method and apparatus for laser assisted cataract surgery
FR3010844B1 (fr) 2013-09-19 2015-10-16 Ene29 S Ar L Eclateur d'un dispositif de generation d'arc electrique et dispositif de generation d'arc electrique correspondant
FR3010843B1 (fr) * 2013-09-19 2017-05-05 Ene29 S Ar L Eclateur d'un dispositif de generation d'arc electrique et dispositif de generation d'arc electrique correspondant
US9993313B2 (en) 2013-10-24 2018-06-12 Auris Health, Inc. Instrument device manipulator with roll mechanism
CN105939647B (zh) 2013-10-24 2020-01-21 奥瑞斯健康公司 机器人辅助腔内外科手术系统及相关方法
US10792464B2 (en) 2014-07-01 2020-10-06 Auris Health, Inc. Tool and method for using surgical endoscope with spiral lumens
US9788910B2 (en) 2014-07-01 2017-10-17 Auris Surgical Robotics, Inc. Instrument-mounted tension sensing mechanism for robotically-driven medical instruments
CA2890401C (fr) * 2015-01-21 2015-11-03 Vln Advanced Technologies Inc. Appareil de decharge electrique pour generer de puissants jets d'eau cavitants et impulsionnels a basse frequence
EP4137034A1 (fr) 2015-09-09 2023-02-22 Auris Health, Inc. Manipulateur de dispositif d'instrument pour système robotique chirurgical

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2247195A1 (fr) * 1973-10-12 1975-05-09 Dornier System Gmbh
DE2635635A1 (de) * 1976-08-07 1978-02-09 Dornier System Gmbh Funkenstrecke zur zerstoerung von konkrementen in koerpern von lebewesen
EP0155028A1 (fr) * 1984-02-16 1985-09-18 Dornier Medizintechnik Gmbh Dispositif pour la desintégration sans contact des concrétions présentes dans un corps

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559227A (en) * 1947-05-24 1951-07-03 Interval Instr Inc Shock wave generator
US3728671A (en) * 1970-04-30 1973-04-17 Us Interior Multiple-electrode, directional, acoustic source
US4419998A (en) * 1980-08-08 1983-12-13 R2 Corporation Physiological electrode systems
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2247195A1 (fr) * 1973-10-12 1975-05-09 Dornier System Gmbh
DE2635635A1 (de) * 1976-08-07 1978-02-09 Dornier System Gmbh Funkenstrecke zur zerstoerung von konkrementen in koerpern von lebewesen
EP0155028A1 (fr) * 1984-02-16 1985-09-18 Dornier Medizintechnik Gmbh Dispositif pour la desintégration sans contact des concrétions présentes dans un corps

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0226047A2 (fr) * 1985-12-12 1987-06-24 Dornier Medizintechnik Gmbh Electrode immergée pour la lithotripsy sans contact
EP0226047A3 (en) * 1985-12-12 1988-09-14 Dornier Medizintechnik Gmbh Submerged electrode for contactless lithotripsy
FR2693306A1 (fr) * 1992-07-02 1994-01-07 Technomed Int Sa Electrode de décharge électrique à bague mobile, dispositif de décharge, dispositif générateur d'ondes de pression et appareil de traitement en comportant application.
WO1994001859A1 (fr) * 1992-07-02 1994-01-20 Technomed International Electrode de decharge electrique a bague mobile

Also Published As

Publication number Publication date
DE3622352C1 (de) 1987-12-03
JPS6319139A (ja) 1988-01-26
US4905673A (en) 1990-03-06

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Inventor name: PIMISKERN, KLAUS, DIPL.-ING.