EP0259559B1 - Générateur d'ondes de choc pour la désintégration à distance des concrétions dans un organisme vivant - Google Patents
Générateur d'ondes de choc pour la désintégration à distance des concrétions dans un organisme vivant Download PDFInfo
- 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
Links
- 239000012528 membrane Substances 0.000 claims description 52
- 230000035939 shock Effects 0.000 claims description 20
- 239000012212 insulator Substances 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000000913 Kidney Calculi Diseases 0.000 description 1
- 206010029148 Nephrolithiasis Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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 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.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Surgical Instruments (AREA)
Claims (5)
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 (fr) | 1988-03-16 |
EP0259559B1 true EP0259559B1 (fr) | 1991-01-16 |
Family
ID=6305141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87109710A Expired - Lifetime EP0259559B1 (fr) | 1986-07-14 | 1987-07-06 | Générateur d'ondes de choc pour la désintégration à distance des concrétions dans un organisme vivant |
Country Status (4)
Country | Link |
---|---|
US (1) | US4782821A (fr) |
EP (1) | EP0259559B1 (fr) |
JP (1) | JPH0340258Y2 (fr) |
DE (1) | DE3767414D1 (fr) |
Families Citing this family (8)
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 (fr) * | 1989-02-24 | 1990-08-29 | Siemens Aktiengesellschaft | Générateur d'ondes de choc |
US5233972A (en) * | 1990-09-27 | 1993-08-10 | Siemens Aktiengesellschaft | Shockwave source for acoustic shockwaves |
DE4032357C1 (fr) * | 1990-10-12 | 1992-02-20 | Dornier Medizintechnik Gmbh, 8000 Muenchen, De | |
DE4125088C1 (fr) * | 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 |
US20040006288A1 (en) * | 2000-10-29 | 2004-01-08 | Avner Spector | Pressure-pulse therapy device for treatment of deposits |
Family Cites Families (5)
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 |
-
1987
- 1987-06-04 US US07/057,315 patent/US4782821A/en not_active Expired - Fee Related
- 1987-07-06 DE DE8787109710T patent/DE3767414D1/de not_active Expired - Fee Related
- 1987-07-06 EP EP87109710A patent/EP0259559B1/fr not_active Expired - Lifetime
- 1987-07-10 JP JP1987106923U patent/JPH0340258Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0259559A1 (fr) | 1988-03-16 |
US4782821A (en) | 1988-11-08 |
JPS6318109U (fr) | 1988-02-06 |
JPH0340258Y2 (fr) | 1991-08-23 |
DE3767414D1 (de) | 1991-02-21 |
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