EP0259559B1 - Stosswellengenerator zum berührungslosen Zertrümmern von Konkrementen im Körper eines Lebewesens - Google Patents

Stosswellengenerator zum berührungslosen Zertrümmern von Konkrementen im Körper eines Lebewesens Download PDF

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Publication number
EP0259559B1
EP0259559B1 EP87109710A EP87109710A EP0259559B1 EP 0259559 B1 EP0259559 B1 EP 0259559B1 EP 87109710 A EP87109710 A EP 87109710A EP 87109710 A EP87109710 A EP 87109710A EP 0259559 B1 EP0259559 B1 EP 0259559B1
Authority
EP
European Patent Office
Prior art keywords
membrane
coil
turns
wave generator
potential
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
EP87109710A
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German (de)
English (en)
French (fr)
Other versions
EP0259559A1 (de
Inventor
Josef Reitter
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
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0259559A1 publication Critical patent/EP0259559A1/de
Application granted granted Critical
Publication of EP0259559B1 publication Critical patent/EP0259559B1/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
    • 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 wave generator for a device for contactless crushing of concrements in the body of a living being, which has a coil with spirally arranged turns and an opposite, a liquid-filled space, made of an electrically conductive material membrane, the coil can be connected to a high voltage supply.
  • shock wave generator with a membrane arranged parallel to the coil is described in DE-OS 33 12 014.
  • the shock waves are generated by connecting the coil to the high-voltage supply, which converts one to several kV, e.g. 20 kV, charged capacitor contains.
  • the energy stored in the capacitor then suddenly discharges into the coil, with the result that the coil builds up a magnetic field extremely quickly.
  • a current is induced in the membrane which is opposite to the current flowing in the coil and consequently generates an opposing magnetic field, under the effect of which the membrane is suddenly moved away from the coil.
  • the so in the with liquid, e.g. Water, filled space shock wave generated by suitable measures on the concrements located in the body of the living being, e.g. Kidney stones, focuses and causes their destruction.
  • the known shock wave generator To achieve the greatest possible conversion of the electrical energy given off by the high-voltage supply into impulse energy, it is necessary in the known shock wave generator to mount the membrane as close as possible to the coil. However, this is only possible to a limited extent because of the inevitable potential difference between the coil and the membrane, since a minimum distance must be maintained in order to avoid voltage flashovers between the membrane and the coil. Voltage flashovers would impair the effect of the shock wave generator and lead to damage to the membrane, which adversely affects its service life. In the case of the known shock wave generator, the distance between the membrane and the coil must therefore be chosen in the interest of a sufficient lifespan of the membrane so that only an unsatisfactory efficiency is achieved when converting the electrical energy into shock energy.
  • the invention has for its object to design a generic shock wave generator so that its membrane has a long service life without being associated with a significant reduction in the efficiency of energy conversion.
  • this object is achieved in that in areas of large potential difference between the turns of the coil on the one hand and the membrane on the other hand, there is an enlarged distance between the two areas which is smaller than areas.
  • the invention takes advantage of the fact that the high voltage drops across the coil and thus the potential difference between the individual turns of the coil and the membrane is different. Accordingly, it is sufficient to ensure a long service life of the membrane if the distance between the turns of the coil and the membrane is increased compared to areas of low potential difference in those areas in which voltage flashovers are to be feared due to the large potential difference present.
  • a long service life of the membrane with a particularly low impact on the efficiency of the energy conversion can be achieved if, according to a variant of the invention, the outermost turn of the coil with the membrane is at the same potential and the inner turns of the coil are at a greater distance from the membrane.
  • the outermost turn of the coil with the membrane is at the same potential and the inner turns of the coil are at a greater distance from the membrane.
  • a further reduction in the effect of the measure according to the invention on the efficiency of the energy conversion is achieved according to one embodiment of the invention in that the distance between the windings of the coil and the membrane in areas of large potential difference de increased distance to areas of small potential difference continuously decreases.
  • This measure ensures that in areas of large potential difference between the individual turns of the coil and the membrane there is actually only that distance which is necessary to avoid voltage flashovers and thus to ensure a sufficient lifespan of the membrane.
  • an embodiment of the invention provides that the membrane is at earth potential, whereby it is ensured that there is no high voltage on the liquid in the room, which may come into contact with the living being or the operating personnel.
  • a last variant of the invention provides that the turns of the coil are arranged on a support surface of an insulator, the support surface being designed according to the distance required between the turns and the membrane. This ensures safe compliance with this distance.
  • the shock wave generator has a housing 1 which contains a space 3 filled with a liquid and closed off by a membrane 2. Opposite the membrane 2 formed from an electrically conductive material, a coil 4 with spirally arranged turns is provided, an insulating film 5 being arranged between the membrane 2 and the coil 4. The turns of the coil 4 are arranged on a support surface 6 of an insulator 7, which is accommodated in a cap 8. The membrane 2, the insulating film 5 and the cap 8 containing the insulator 7 with the coil 4 are fastened to the housing 1 by means of screws 9.
  • the space between the insulating film 5 and the support surface 6 of the insulator 7 is filled with an electrically insulating cast resin (not shown for reasons of clarity).
  • the coil 4 can be connected via connections 10 and 11, which come out through holes in the insulator 7 and the cap 8, by means of a suitable switching means 12 to a schematically illustrated high-voltage supply 13, which emits a current surge to the coil 4, as a result of which the membrane 2 is suddenly repelled by the coil 4, which leads to the formation of a shock wave in the liquid in the space 3.
  • potential differences occur between the membrane 2 and the individual turns of the coil 4.
  • the outermost turn 14 of the coil 4 with the membrane 2 is at the same potential, namely earth potential 15, so that between the inner turns 16 to 21 of the coil 4 and the membrane 2 there is a high potential difference.
  • the turns 16 to 21 are consequently arranged at a greater distance from the membrane 2 than the outer turns of the coil 4, which have a smaller potential difference from the membrane 2.
  • the distance between the windings 16 to 21 from the membrane 2 also decreases in the sense of the decrease in the potential difference, namely continuously, the contact surface 6 of the insulator 7 being shaped in accordance with the distance required between the windings 16 to 21 and the membrane 2.
  • shock wave generator with a flat membrane 2 is shown. But it is also possible to use shock wave generators with different types, e.g. spherically shaped membrane according to the invention.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Surgical Instruments (AREA)
EP87109710A 1986-07-14 1987-07-06 Stosswellengenerator zum berührungslosen Zertrümmern von Konkrementen im Körper eines Lebewesens Expired - Lifetime EP0259559B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3623703 1986-07-14
DE3623703 1986-07-14

Publications (2)

Publication Number Publication Date
EP0259559A1 EP0259559A1 (de) 1988-03-16
EP0259559B1 true EP0259559B1 (de) 1991-01-16

Family

ID=6305141

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109710A Expired - Lifetime EP0259559B1 (de) 1986-07-14 1987-07-06 Stosswellengenerator zum berührungslosen Zertrümmern von Konkrementen im Körper eines Lebewesens

Country Status (4)

Country Link
US (1) US4782821A (enrdf_load_stackoverflow)
EP (1) EP0259559B1 (enrdf_load_stackoverflow)
JP (1) JPH0340258Y2 (enrdf_load_stackoverflow)
DE (1) DE3767414D1 (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5095891A (en) * 1986-07-10 1992-03-17 Siemens Aktiengesellschaft Connecting cable for use with a pulse generator and a shock wave generator
EP0383984A1 (de) * 1989-02-24 1990-08-29 Siemens Aktiengesellschaft Stosswellenrohr
US5233972A (en) * 1990-09-27 1993-08-10 Siemens Aktiengesellschaft Shockwave source for acoustic shockwaves
DE4032357C1 (enrdf_load_stackoverflow) * 1990-10-12 1992-02-20 Dornier Medizintechnik Gmbh, 8000 Muenchen, De
DE4125088C1 (enrdf_load_stackoverflow) * 1991-07-29 1992-06-11 Siemens Ag, 8000 Muenchen, De
US6755796B2 (en) 1999-02-07 2004-06-29 Medispec Ltd. Pressure-pulse therapy apparatus
IL128404A0 (en) * 1999-02-07 2000-01-31 Spector Avner Device for transmission of shock waves on to large surfaces of human tissue
WO2002034104A2 (en) * 2000-10-29 2002-05-02 Medispec Ltd. Pressure-pulse therapy device for treatment of deposits

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4542250A (en) * 1982-01-09 1985-09-17 The British Petroleum Company, P.L.C. Use of stabilized pillared interlayered clays as catalyst in alkylation reactions
DE3312014C2 (de) * 1983-04-02 1985-11-07 Wolfgang Prof. Dr. 7140 Ludwigsburg Eisenmenger Einrichtung zur berührungsfreien Zertrümmerung von Konkrementen im Körper von Lebewesen
DE3328051A1 (de) * 1983-08-03 1985-02-14 Siemens AG, 1000 Berlin und 8000 München Einrichtung zum beruehrungslosen zertruemmern von konkrementen
DE3443295A1 (de) * 1984-11-28 1986-06-05 Wolfgang Prof. Dr. 7140 Ludwigsburg Eisenmenger Einrichtung zur beruehrungsfreien zertruemmerung von konkrementen im koerper von lebewesen
DE3447440A1 (de) * 1984-12-27 1986-07-03 Siemens AG, 1000 Berlin und 8000 München Stosswellenrohr fuer die zertruemmerung von konkrementen

Also Published As

Publication number Publication date
US4782821A (en) 1988-11-08
JPS6318109U (enrdf_load_stackoverflow) 1988-02-06
JPH0340258Y2 (enrdf_load_stackoverflow) 1991-08-23
DE3767414D1 (de) 1991-02-21
EP0259559A1 (de) 1988-03-16

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