EP0189780B1 - Stosswellenrohr mit einer langen Lebensdauer - Google Patents

Stosswellenrohr mit einer langen Lebensdauer Download PDF

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Publication number
EP0189780B1
EP0189780B1 EP86100418A EP86100418A EP0189780B1 EP 0189780 B1 EP0189780 B1 EP 0189780B1 EP 86100418 A EP86100418 A EP 86100418A EP 86100418 A EP86100418 A EP 86100418A EP 0189780 B1 EP0189780 B1 EP 0189780B1
Authority
EP
European Patent Office
Prior art keywords
shock wave
membrane
coil
wave tube
tube according
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
Application number
EP86100418A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0189780A1 (de
Inventor
Georg Naser
Helmut Dr. Reichenberger
Karl-Heinz Schlee
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0189780A1 publication Critical patent/EP0189780A1/de
Application granted granted Critical
Publication of EP0189780B1 publication Critical patent/EP0189780B1/de
Expired 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
    • 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 tube with a coil carrier, which carries a coil, and with a membrane arranged in front of the coil. It relates in particular to a shock wave tube for crushing concrements in a patient, for example to crushing kidney stones.
  • Shock wave tubes of this type have been known per se for a long time. According to recent investigations, e.g. specified in DE-A-33 12 014, used in medical technology for crushing concrements in the body of a patient.
  • DE-A-33 12 014 describes a shock wave tube of the type mentioned at the beginning. Due to the high pressure pulse, e.g. The materials of such a shock wave tube are subjected to heavy loads of 100 bar in the event of repeated discharges and shock wave emissions. In particular, the discharge coil, which is designed as a flat coil, and the membrane are exposed to high mechanical forces, which lead to early material fatigue.
  • the metal membrane is designed to be rotationally symmetrical to increase the service life and to have cross sections with different radial effects. Furthermore, it is stated there that the life of the membrane during shock wave generation is long if the membrane is pressed against the flat coil by means of a pressure provided.
  • the object of the invention is to design a shock wave tube of the type mentioned in the introduction in such a way that its radiation characteristic is retained over a large number of shock wave emissions.
  • this object is achieved according to the invention in that the coil carrier consists of aluminum oxide ceramic.
  • the object is achieved according to the invention in that the membrane consists of a bronze alloy or molybdenum.
  • the advantage of both embodiments is that the lifespan of the shock wave tube is long with consistently good radiation values. For example, triggered over 3000 shock waves with a coil carrier made of an aluminum oxide ceramic, without the coil carrier breaking or without high voltage flashovers between the turns of the coil. With a membrane made of bronze alloy, more than 3000 shock waves were also generated without the membrane showing any visible deformations or even cracks. The folds that were otherwise observed with copper, aluminum or steel membranes after a high number of shots therefore did not occur.
  • a silver layer of approx. 50 J.Lm thickness shows positive effects on the shock wave shape and on the pressure amplitude.
  • the figure shows a coil carrier made of aluminum oxide ceramic with an adjacent membrane made of a bronze alloy, the surface of which is finished.
  • the coil carrier and the membrane as well as an insulating film arranged between them are each drawn at a distance from one another.
  • 1 generally denotes a shock wave tube, the essential components of which are a coil carrier 3, an insulating film 5 and a round membrane 7 made of electrically conductive material.
  • a discharge coil designed as a flat coil 9 is glued onto the end face of the coil carrier 3 with the aid of a synthetic resin 11.
  • the components 9, 5 and 7 are held tightly pressed together by a retaining ring 12 which is fastened to the coil carrier 3 in a suitable manner.
  • a short electrical voltage pulse of high amplitude is applied to the flat coil 9.
  • the electromagnetic field generated in this way causes the membrane 7 to suddenly move away from the flat coil 9.
  • the membrane 7, however, is firmly pressed against the flat coil 9 on its circumference, with the interposition of the insulating film 5.
  • the repelling movement is ideally generated approximately uniformly over the free surface of the membrane 7, whereby a shock wave P is emitted. It is obvious that after a number of shock wave emissions a certain material fatigue occurs in the membrane 7.
  • the membrane 7 should consist of the best possible conductive material and for reasons of good strength and non-deformability with a high number of shock wave generations, the membrane 7 should simultaneously consist of a material with high tensile strength and an elastic modulus greater than 110 KN / mm 2 .
  • the membrane 7 is made in the present case from a bronze alloy, in particular from a beryllium bronze.
  • a bronze alloy with the addition of tin or silver has also proven to be advantageous.
  • molybdenum can also be used as the material for the membrane 7.
  • the electrical conductivity of the membrane 7 and thus the efficiency of the deflection when generating the shock waves can be further improved if the surface of the membrane 7 facing the flat coil 9 is finished.
  • Refinement with a silver layer 13 with a thickness of approx. 50 J.Lm has proven to be advantageous here. A significantly higher pressure amplitude is obtained than without this layer.
  • shock wave tube 1 has a long service life. Compression or sagging. No voltage flashovers were observed in the coil 9 cast in the synthetic resin 11.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Surgical Instruments (AREA)
EP86100418A 1985-01-28 1986-01-14 Stosswellenrohr mit einer langen Lebensdauer Expired EP0189780B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3502751 1985-01-28
DE19853502751 DE3502751A1 (de) 1985-01-28 1985-01-28 Stosswellenrohr mit einer langen lebensdauer

Publications (2)

Publication Number Publication Date
EP0189780A1 EP0189780A1 (de) 1986-08-06
EP0189780B1 true EP0189780B1 (de) 1988-10-26

Family

ID=6260956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100418A Expired EP0189780B1 (de) 1985-01-28 1986-01-14 Stosswellenrohr mit einer langen Lebensdauer

Country Status (4)

Country Link
US (1) US4878488A (enrdf_load_stackoverflow)
EP (1) EP0189780B1 (enrdf_load_stackoverflow)
JP (1) JPS61176335A (enrdf_load_stackoverflow)
DE (2) DE3502751A1 (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8627238U1 (de) * 1986-10-06 1988-02-04 Siemens AG, 1000 Berlin und 8000 München Stoßwellenquelle
EP0263349A1 (de) * 1986-10-06 1988-04-13 Siemens Aktiengesellschaft Stosswellenquelle
US4879993A (en) * 1986-10-29 1989-11-14 Siemens Aktiengesellschaft Shock wave source for generating a short initial pressure pulse
DE3772958D1 (de) * 1986-12-15 1991-10-17 Siemens Ag Stosswellenrohr.
DE3835318C1 (enrdf_load_stackoverflow) * 1988-10-17 1990-06-28 Storz Medical Ag, Kreuzlingen, Ch
DE4201138A1 (de) * 1992-01-17 1993-07-22 Siemens Ag Verfahren zur herstellung einer spulenanordnung fuer einen elektromagnetischen akustischen druckimpulsgenerator sowie spulenanordnung fuer einen solchen druckimpulsgenerator
US6439891B1 (en) * 1998-11-24 2002-08-27 Spectra Research, Inc. Shock wave generator including high speed gas valve
DE19929112A1 (de) * 1999-06-24 2001-01-11 Ferton Holding Sa Medizinisches Instrument zur Behandlung von biologischem Gewebe sowie Verfahren zum Übertragen von Druckwellen
DE10215416B4 (de) 2002-04-08 2020-10-29 Ferton Holding S.A. Medizinisches Gerät zur Behandlung von biologischem Gewebe
CN101829009A (zh) * 2010-05-11 2010-09-15 席贤兴 冲击波锤
US8910505B2 (en) * 2012-03-21 2014-12-16 The Johns Hopkins University System and method for simulating primary and secondary blast

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1001968A (en) * 1911-05-22 1911-08-29 John H Massey Acoustic diaphragm.
US1634292A (en) * 1922-03-20 1927-07-05 Lederer Karl Martin Art of the transmission of sound
US2411865A (en) * 1944-02-10 1946-12-03 Bell Telephone Labor Inc Submarine signaling device
DE1191720B (de) * 1961-06-24 1965-04-22 Siemens Ag Elektrodynamischer Impulsschallgeber fuer Echolotung
US3189767A (en) * 1963-01-28 1965-06-15 Gen Electric Ultrasonic transmitting means and method of producing same
US4135601A (en) * 1975-06-24 1979-01-23 Pioneer Electronic Corporation Boron coated diaphragm for use in a loud speaker
US4344503A (en) * 1980-02-01 1982-08-17 Nippon Gakki Seizo Kabushiki Kaisha Diaphragm for electro-acoustic transducer
DE3029036A1 (de) * 1980-07-31 1982-03-04 Mannesmann AG, 4000 Düsseldorf Vorrichtung zur pruefung von werkstoffen
DE3312014C2 (de) 1983-04-02 1985-11-07 Wolfgang Prof. Dr. 7140 Ludwigsburg Eisenmenger Einrichtung zur berührungsfreien Zertrümmerung von Konkrementen im Körper von Lebewesen
DE8521196U1 (de) * 1985-07-23 1985-08-29 Eisenmenger, Wolfgang, Prof. Dr., 7140 Ludwigsburg Membran-Spulen-Anordnung von elektromagnetischen Einrichtungen zur berührungsfreien Zertrümmerung von Konkrementen im Körper von Lebewesen

Also Published As

Publication number Publication date
JPS61176335A (ja) 1986-08-08
DE3502751A1 (de) 1986-07-31
DE3660984D1 (en) 1988-12-01
US4878488A (en) 1989-11-07
EP0189780A1 (de) 1986-08-06
JPH0459898B2 (enrdf_load_stackoverflow) 1992-09-24

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