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EP0226047B1 - Electrode immergée pour la lithotripsy sans contact - Google Patents

Electrode immergée pour la lithotripsy sans contact Download PDF

Info

Publication number
EP0226047B1
EP0226047B1 EP86115769A EP86115769A EP0226047B1 EP 0226047 B1 EP0226047 B1 EP 0226047B1 EP 86115769 A EP86115769 A EP 86115769A EP 86115769 A EP86115769 A EP 86115769A EP 0226047 B1 EP0226047 B1 EP 0226047B1
Authority
EP
European Patent Office
Prior art keywords
electrode
submerged
sleeve
lithotripsy
ring
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
EP86115769A
Other languages
German (de)
English (en)
Other versions
EP0226047A3 (en
EP0226047A2 (fr
Inventor
Bernd Dr. Forssmann
Harald Eizenhöfer
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 Medizintechnik GmbH
Original Assignee
Dornier Medizintechnik 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 Medizintechnik GmbH filed Critical Dornier Medizintechnik GmbH
Publication of EP0226047A2 publication Critical patent/EP0226047A2/fr
Publication of EP0226047A3 publication Critical patent/EP0226047A3/de
Application granted granted Critical
Publication of EP0226047B1 publication Critical patent/EP0226047B1/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 an underwater electrode for non-contact lithotripsy, the electrode tips being opposite one another.
  • Concretions in the human body can be crushed into non-contact fragments using mechanical shock waves.
  • the generation of shock waves by underwater spark discharge has proven itself, the spark gap being at the focal point of a water-filled, rotationally elliptical focusing chamber and electrical energy stored in a capacitor being converted into shock wave energy by spark discharge.
  • Electrodes that can be used for this type of shock wave generation are known from DE-A-26 35 635 .
  • the electrode shown in this laid-open specification in FIG. 4 has proven itself in practice.
  • a tubular outer conductor merges into a yoke or a cage, at the end of which an electrode tip is fastened, which is axially opposite the other electrode tip connected to the inner conductor.
  • the coaxial structure of these electrodes requires a continuous transition area of field lines that start from the inner conductor and end on the outer conductor, the outer conductor basket and the outer conductor tip.
  • the spark jump should, if possible, along the electrode axis because of the illustration by the ellipsoid occur. This is no longer guaranteed in every case with advanced electrode erosion.
  • the object of the invention is to increase the period of use of underwater electrodes for non-contact lithotripsy.
  • This object is achieved according to the invention in that a sleeve or a ring made of dielectric material of lower polarizability than water is arranged on at least one electrode tip.
  • the service life of an electrode can be considerably extended. Tests have shown that the lifespan can triple.
  • the spark jump is advantageously forced onto the axis of the electrode, with the result that the local representation of the spark scatters less strongly around the upper focus point.
  • the electrode consists of an inner conductor 4 with an electrode tip 6 , insulation 8 , an outer conductor 10 and a mounting sleeve 12 .
  • the electrode is fastened in an electrode holder (not shown) by means of the mounting sleeve 12 , the inner conductor 4 and the outer conductor 10 being connected to the electrical system (not shown) at the same time.
  • a cage 14 is fastened to the outer conductor 10 and consists of a plurality of wires 15 and carries the second electrode tip 16 .
  • Protective tubes 18 made of plastic are partially drawn over the wires 15 .
  • Inner conductor 4 and outer conductor 10 consist of metallic materials.
  • the electrode tips 6, 16 consist of tungsten, tantalum or other erosion-resistant materials or alloys.
  • Insulation 8 and mounting sleeve 12 are made of plastic.
  • a sleeve 20 is shrunk onto the electrode tip 6 .
  • FIG. 2 shows a dielectric sleeve 26 , which is located on the electrode tip 16 .
  • the geometry and wall thickness of the electrode sleeves 20 and 26 are designed in such a way that the field lines run optimally.
  • the end faces 28, 30 of the sleeves 20, 26 can be designed convex or concave, as can be seen in FIG. 3.
  • the sleeves are shrunk onto the electrode tips 6, 16 .
  • Fig. 4 shows a dielectric ring 32 with a bore 34, which is on the cage 14 is attached.
  • the cross section of the ring is lenticular.
  • Other configurations and attachments of the ring 32 are also conceivable within the scope of the invention.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Surgical Instruments (AREA)
  • Plasma Technology (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (6)

  1. Electrode immergée pour la lithotriptie sans contact, les pointes d'électrode étant placées en face l'une de l'autre, caractérisée en ce que sur au moins l'une des pointes d'électrode (6, 16) est disposée une douille (20, 26) ou une bague (32) réalisée dans un matériau diélectrique dont la polarisabilité est plus faible que celle de l'eau.
  2. Electrode immergée selon la revendication 1, caractérisée en ce que la face frontale (24) de la douille (20) est plane.
  3. Electrode immergée selon la revendication 1, caractérisée en ce que les faces frontales (28, 30) des douilles (20, 26) sont convexes ou concaves.
  4. Electrode immergée selon la revendication 1, caractérisée en ce que les faces frontales (28, 30) des douilles (20, 26) sont convexes sur l'une des pointes d'électrode et concaves sur l'autre pointe d'électrode.
  5. Electrode immergée selon la revendication 1, caractérisée en ce que la bague (32) est fixée sur une cage (14) ou sur une pointe d'électrode (6, 16).
  6. Electrode immergée selon la revendication 5, caractérisée en ce que la bague (32) peut présenter une section transversale circulaire, lenticulaire, rectangulaire ou être assemblée à partir de sections concaves.
EP86115769A 1985-12-12 1986-11-13 Electrode immergée pour la lithotripsy sans contact Expired - Lifetime EP0226047B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3543881A DE3543881C1 (de) 1985-12-12 1985-12-12 Unterwasser-Elektrode fuer die beruehrungsfreie Lithotripsie
DE3543881 1985-12-12

Publications (3)

Publication Number Publication Date
EP0226047A2 EP0226047A2 (fr) 1987-06-24
EP0226047A3 EP0226047A3 (en) 1988-09-14
EP0226047B1 true EP0226047B1 (fr) 1992-08-26

Family

ID=6288247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115769A Expired - Lifetime EP0226047B1 (fr) 1985-12-12 1986-11-13 Electrode immergée pour la lithotripsy sans contact

Country Status (5)

Country Link
US (1) US4809682A (fr)
EP (1) EP0226047B1 (fr)
JP (1) JPS62144647A (fr)
DE (1) DE3543881C1 (fr)
ES (1) ES2034954T3 (fr)

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DE3713884A1 (de) * 1987-04-25 1988-11-03 Dornier System Gmbh Verbindung einer metallhuelse mit einer in ihrer bohrung befindlichen kunststoffhuelse
CU22021A1 (es) * 1987-04-28 1992-06-05 Mini Salud Publ Electrodo para destruccion de calculos renales
DE3804993C1 (fr) * 1988-02-18 1989-08-10 Dornier Medizintechnik Gmbh, 8034 Germering, De
SE465552B (sv) * 1989-03-21 1991-09-30 Hans Wiksell Anordning foer soenderdelning av konkrement i kroppen paa en patient
DE4016054A1 (de) * 1990-05-18 1991-11-21 Dornier Medizintechnik Funkenstrecke fuer die lithotripsie
FR2693306B1 (fr) * 1992-07-02 1994-10-14 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.
EP0590177B1 (fr) * 1992-09-28 1996-12-18 Hmt High Medical Technologies Entwicklungs- Und Vertriebs Ag Dispositif générateur d'ondes de choc pour la destruction à distance des concrétions dans le corps vivant
US5420473A (en) * 1993-10-12 1995-05-30 Thomas; Howard C. Spark gap electrode assembly for lithotripters
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
DE19718512C1 (de) * 1997-05-02 1998-06-25 Hmt Ag Verfahren und Vorrichtung zum Erzeugen von Stoßwellen für medizinische Anwendungen
CZ297145B6 (cs) 1997-10-24 2006-09-13 Medipool Treuhand- Und Beteiligungsgesellschaft Für Medizintechnik Gmbh Zpusob prizpusobení vzdálenosti elektrod jiskriste v elektrohydraulických systémech s rázovou vlnou
CN100342828C (zh) * 2005-09-22 2007-10-17 何申戌 液电冲击体外碎石用电极的最终表面处理方法
EP2300091B1 (fr) 2008-06-13 2018-03-21 Shockwave Medical, Inc. Système de cathéter à ballonnet du type à onde de choc
US9072534B2 (en) * 2008-06-13 2015-07-07 Shockwave Medical, Inc. Non-cavitation shockwave balloon catheter system
US10702293B2 (en) 2008-06-13 2020-07-07 Shockwave Medical, Inc. Two-stage method for treating calcified lesions within the wall of a blood vessel
US9180280B2 (en) 2008-11-04 2015-11-10 Shockwave Medical, Inc. Drug delivery shockwave balloon catheter system
US9044618B2 (en) 2008-11-05 2015-06-02 Shockwave Medical, Inc. Shockwave valvuloplasty catheter system
US8574247B2 (en) 2011-11-08 2013-11-05 Shockwave Medical, Inc. Shock wave valvuloplasty device with moveable shock wave generator
US9642673B2 (en) 2012-06-27 2017-05-09 Shockwave Medical, Inc. Shock wave balloon catheter with multiple shock wave sources
EP2879597B1 (fr) 2012-08-06 2016-09-21 Shockwave Medical, Inc. Cathéter à onde de choc
CN104582621B (zh) 2012-08-06 2017-04-12 冲击波医疗公司 用于血管成形冲击波导管的低剖面电极
WO2014025981A1 (fr) 2012-08-08 2014-02-13 Shockwave Medical, Inc. Valvuloplastie à ondes de choc ayant de multiples ballonnets
US9138249B2 (en) 2012-08-17 2015-09-22 Shockwave Medical, Inc. Shock wave catheter system with arc preconditioning
US9522012B2 (en) 2012-09-13 2016-12-20 Shockwave Medical, Inc. Shockwave catheter system with energy control
US9333000B2 (en) 2012-09-13 2016-05-10 Shockwave Medical, Inc. Shockwave catheter system with energy control
CN103198825B (zh) * 2013-02-21 2015-10-28 西北工业大学 水下等离子体声源的放电电极
US9140070B2 (en) 2013-11-22 2015-09-22 Thru Tubing Solutions, Inc. Method of using a downhole force generating tool
US9730715B2 (en) 2014-05-08 2017-08-15 Shockwave Medical, Inc. Shock wave guide wire
WO2017087195A1 (fr) 2015-11-18 2017-05-26 Shockwave Medical, Inc. Électrodes d'onde de choc
CN105654938B (zh) * 2016-01-26 2019-12-24 云南科威液态金属谷研发有限公司 液态金属等离子体电声转换装置
US10226265B2 (en) 2016-04-25 2019-03-12 Shockwave Medical, Inc. Shock wave device with polarity switching
US10646240B2 (en) 2016-10-06 2020-05-12 Shockwave Medical, Inc. Aortic leaflet repair using shock wave applicators
US10357264B2 (en) 2016-12-06 2019-07-23 Shockwave Medical, Inc. Shock wave balloon catheter with insertable electrodes
US10441300B2 (en) 2017-04-19 2019-10-15 Shockwave Medical, Inc. Drug delivery shock wave balloon catheter system
US11020135B1 (en) 2017-04-25 2021-06-01 Shockwave Medical, Inc. Shock wave device for treating vascular plaques
JP2018200747A (ja) * 2017-05-25 2018-12-20 株式会社融合技術開発センター パルスパワー発生装置
US10966737B2 (en) 2017-06-19 2021-04-06 Shockwave Medical, Inc. Device and method for generating forward directed shock waves
US10709462B2 (en) 2017-11-17 2020-07-14 Shockwave Medical, Inc. Low profile electrodes for a shock wave catheter
AU2019290401B2 (en) 2018-06-21 2025-02-27 Shockwave Medical, Inc. System for treating occlusions in body lumens
ES3009524T3 (en) 2019-09-24 2025-03-27 Shockwave Medical Inc Lesion crossing shock wave catheter
JP7515576B2 (ja) 2019-09-24 2024-07-12 ショックウェーブ メディカル， インコーポレイテッド 身体管腔内の血栓を治療するためのシステム
ES2968360T3 (es) 2019-09-24 2024-05-09 Shockwave Medical Inc Electrodos de bajo perfil para un catéter de ondas de choque
US11992232B2 (en) 2020-10-27 2024-05-28 Shockwave Medical, Inc. System for treating thrombus in body lumens
US12232755B2 (en) 2020-12-11 2025-02-25 Shockwave Medical, Inc. Lesion crossing shock wave catheter
US12023098B2 (en) 2021-10-05 2024-07-02 Shockwave Medical, Inc. Lesion crossing shock wave catheter
US12290268B2 (en) 2023-03-31 2025-05-06 Shockwave Medical, Inc. Shockwave catheters for treating rhinosinusitis
US12035932B1 (en) 2023-04-21 2024-07-16 Shockwave Medical, Inc. Intravascular lithotripsy catheter with slotted emitter bands
US12220141B2 (en) 2023-06-29 2025-02-11 Shockwave Medical, Inc. Catheter system with independently controllable bubble and arc generation
US12496078B2 (en) 2023-08-24 2025-12-16 Shockwave Medical, Inc. Lithotripsy catheters having electrodes formed in metallization layers
US12426904B2 (en) 2023-11-17 2025-09-30 Shockwave Medical, Inc. Intravascular lithotripsy catheter with oscillating impactor
US12402899B2 (en) 2023-11-30 2025-09-02 Shockwave Medical, Inc. Systems, devices, and methods for generating shock waves in a forward direction
US12433620B2 (en) 2024-02-23 2025-10-07 Shockwave Medical, Inc. Locus emitter shock wave catheter devices with increased longevity and higher sonic output
US12471939B2 (en) 2024-03-05 2025-11-18 Shockwave Medical, Inc. Shock wave catheter with retractable enclosure
US12178458B1 (en) 2024-05-16 2024-12-31 Shockwave Medical, Inc. Guidewireless shock wave catheters
US12453565B1 (en) 2024-11-18 2025-10-28 Shockwave Medical, Inc. Shock wave catheters and methods of use thereof for treating, imaging, and characterizing body lumens

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US3286226A (en) * 1965-01-18 1966-11-15 Edgerton Germeshausen & Grier Underwater spark discharge sound-producing system
US3347336A (en) * 1965-06-29 1967-10-17 Shell Oil Co Seismic wave generator
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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
DE3622352C1 (de) * 1986-07-03 1987-12-03 Dornier System Gmbh Funkenstrecke mit Elektrodenspitzen unterschiedlicher Geometrie

Also Published As

Publication number Publication date
US4809682A (en) 1989-03-07
EP0226047A3 (en) 1988-09-14
JPS62144647A (ja) 1987-06-27
EP0226047A2 (fr) 1987-06-24
JPH0584168B2 (fr) 1993-12-01
DE3543881C1 (de) 1987-03-26
ES2034954T3 (es) 1993-04-16

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