EP0258561A1 - Générateur d'ondes de choc, utilisé en particulier pour la lithotripsie - Google Patents

Générateur d'ondes de choc, utilisé en particulier pour la lithotripsie Download PDF

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Publication number
EP0258561A1
EP0258561A1 EP87109244A EP87109244A EP0258561A1 EP 0258561 A1 EP0258561 A1 EP 0258561A1 EP 87109244 A EP87109244 A EP 87109244A EP 87109244 A EP87109244 A EP 87109244A EP 0258561 A1 EP0258561 A1 EP 0258561A1
Authority
EP
European Patent Office
Prior art keywords
shock wave
flat coil
wave source
shock
lens
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Withdrawn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
EP87109244A
Other languages
German (de)
English (en)
Inventor
Helmut Dr. Dipl.-Phys. Reichenberger
Georg Dipl.-Ing. Naser (Fh)
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 EP0258561A1 publication Critical patent/EP0258561A1/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Withdrawn legal-status Critical Current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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/30—Sound-focusing or directing, e.g. scanning using refraction, e.g. acoustic lenses
    • 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 source with a line focus transverse to the direction of propagation of the emitted shock wave pulse.
  • a shock wave source is, for example, part of a lithotripter for breaking kidney stones.
  • a shock wave pulse is introduced into the patient from the outside via a coupling medium. This shock wave pulse is usually focused on the area of the calculus.
  • shock wave source with a line focus.
  • a shock wave source is known for example from DE-PS 34 17 985, column 4, lines 36 to 50.
  • an axial line focus instead of a point-like focal point is described as advantageous.
  • a broadening of the focus perpendicular to the direction of propagation of the shock wave with the same pressure amplitude in focus would require an increase in the shock wave energy proportional to the front surface, which leads to a substantial increase in the load on the electrodes generating the shock wave and the patient.
  • side effects thus arise, for which the formation of a line focus transverse to the direction of propagation of the shock wave pulse has previously been assessed as disadvantageous.
  • shock wave tubes with membrane and flat coil are such.
  • B. from DE-OS 33 28 051 ( VPA 83 P 3248) known.
  • a flat coil with a concave-spherical surface used in lithotripsy is known from DE-GM 84 13 031.8.
  • the invention is based on the idea that a line focus transverse to the direction of propagation is nevertheless advantageous if the shock wave source dispenses with ignition electrodes and thus on expensive replacement parts, and that simultaneous sound reinforcement is provided with concrements in a position transverse to the direction of propagation of the shock wave reduced treatment time, less patient burden and increased profitability.
  • the object of the invention is therefore to design a shock wave source of the type mentioned at the outset in such a way that a line focus arises transversely to the direction of propagation using a relatively long-lasting shock wave source without ignition electrodes.
  • this object is achieved according to the invention by a membrane known per se and a flat coil known per se for the electromagnetic generation of the shock wave pulse, and by a concave-cylindrical shape of the flat coil.
  • this object is achieved according to the invention by a membrane known per se and a flat coil known per se for the electromagnetic generation of the shock wave pulse, and by a concave-cylindrical acoustic lens arranged downstream of this membrane.
  • this object is achieved according to the invention by two arranged side by side te shock wave generators with point focus, the main beam directions of which are aligned essentially parallel to one another.
  • a shock wave generator 1 is shown, which is followed by a lens 3.
  • the shock wave generator 1 is known per se in the prior art. It consists z. B. from a circular coil, which is upstream of a round copper membrane separated by an insulating film. If a high-voltage pulse is applied to the flat coil, the copper membrane is moved suddenly due to electromagnetic forces. A shock wave pulse is generated, which is transmitted to the lens 3 via a coupling medium.
  • Such a shock wave generator 1 generally has a point focus.
  • the lens 3 is a lens which is ground concavely and cylindrically on both sides and extends somewhat perpendicular to the plane of the paper. It is also possible to design the lens 3 to be concave-cylindrical only on its entry side 3a or on its exit side 3b. Between the lens 3 and the body of a patient P to be treated there is a flow path 5 filled with water, which is delimited by a closing membrane 7. The end membrane 7 lies against the patient 5 without air bubbles. It is important that the lens 3 does not create a point-like focal point, but rather a line focus L which is perpendicular to the central direction of propagation Z.
  • the shock wave generator 1 and the lens 3 together form a shock wave source which has the center axis Z.
  • the lens 3 can be rotated about the center axis Z. This can be done, for example, with a semicircular tooth ring 9 can be achieved in cooperation with a pinion 11.
  • the ring gear 9 is attached to the lens 3 and the pinion 11 to a housing wall of the shock wave source 1, 3. By rotating the pinion 11 along the curved double arrow 13, for. B. by hand, the lens 3 and thus the line focus L is rotated about the center axis Z.
  • a carriage 15 is provided, which runs in a groove of the shock wave generator housing and is displaceable in the direction of the double arrow 17, for. B.
  • the lens 3 is positioned further away from or closer to the shock wave generator 1. This allows the line focus L to be shifted along the center axis Z.
  • the rotation of the line focus L opens up the possibility of tracking the shock wave pulse to the treatment area when it changes its position; it allows particularly sensitive areas to be avoided. It is expedient to insert an orientation of the line focus L in the image system of the associated locating device (not shown).
  • FIG. 2 shows a second embodiment of a shock wave source.
  • a flat coil 22 is applied to a flat coil support 20, the surface of which is concave-cylindrical.
  • the flat coil 22 is preferably designed according to one of the shapes shown in FIGS. 3 to 5.
  • a membrane 24 is arranged separated from an insulating film.
  • the membrane 24 is pressed against the edge of the flat coil carrier 20 by a clamping flange 26.
  • a shock wave source in which the focusing device is integrated.
  • a shock wave pulse is generated directly, which collects in a line focus L, that is to say perpendicularly to the paper plane.
  • FIGS. 3 to 5 show suitable shapes for a flat coil 23A, 23B, 23C, such as either as a flat coil for generating a shock wave pulse with a rectangular cross section in connection with a concave-cylindrical lens according to FIG. 1, or directly as a rectangular flat coil 2, which is curved in a concave-cylindrical manner according to FIG. 3 shows a single spiral, which has a rectangular spiral path.
  • Fig. 4 shows an elliptical spiral shape.
  • Fig. 5 shows two square spirals, which are arranged side by side and thereby form a rectangular coil, because the two square spirals are preferably electrically connected in parallel.
  • FIG. 6 shows an exploded view of a shock wave source with its essential elements for further illustration.
  • a membrane 34 is arranged in front of a coil carrier 30 with a glued-on rectangular flat coil 33, which is again made in two parts here - separated by an insulating film (not shown).
  • the membrane 34 is pressed against the coil carrier 30 in the assembled state by a clamping flange 36.
  • An elongated lens 38 with a concave-cylindrical shape is arranged behind the clamping flange 36.
  • the shock wave source here also has a center axis Z, about which it can be rotated along a curved double arrow 13.
  • shock wave sources shown can not only be used in the field of lithotripsy, but can also be used in medicine wherever widened shock wave radiation is important.
EP87109244A 1986-07-08 1987-06-26 Générateur d'ondes de choc, utilisé en particulier pour la lithotripsie Withdrawn EP0258561A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3622828 1986-07-08
DE3622828 1986-07-08

Publications (1)

Publication Number Publication Date
EP0258561A1 true EP0258561A1 (fr) 1988-03-09

Family

ID=6304605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109244A Withdrawn EP0258561A1 (fr) 1986-07-08 1987-06-26 Générateur d'ondes de choc, utilisé en particulier pour la lithotripsie

Country Status (2)

Country Link
EP (1) EP0258561A1 (fr)
JP (1) JPS6320076A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0316863A2 (fr) * 1987-11-16 1989-05-24 Kabushiki Kaisha Toshiba Appareillage de traitement par onde de choc
CN116818568A (zh) * 2023-08-31 2023-09-29 中国工程物理研究院流体物理研究所 一种基于光学透镜原理的冲击波调控、验证装置及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923142A1 (de) * 1979-06-07 1980-12-11 Anikejev Ultraschallgeber zur werkstoffpruefung mittels der immersionsmethode
DE8413031U1 (de) * 1984-04-27 1984-07-05 Siemens AG, 1000 Berlin und 8000 München Einrichtung zum berührungslosen Zertrümmernvon Konkrementen
EP0133665A2 (fr) * 1983-08-03 1985-03-06 Siemens Aktiengesellschaft Appareils pour détruire les calculs à distance
DE3417985A1 (de) * 1984-05-15 1985-11-21 Dornier System Gmbh, 7990 Friedrichshafen Vorrichtung zur beruehrungsfreien zerkleinerung von konkrementen mit koaxialer ortung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923142A1 (de) * 1979-06-07 1980-12-11 Anikejev Ultraschallgeber zur werkstoffpruefung mittels der immersionsmethode
EP0133665A2 (fr) * 1983-08-03 1985-03-06 Siemens Aktiengesellschaft Appareils pour détruire les calculs à distance
DE8413031U1 (de) * 1984-04-27 1984-07-05 Siemens AG, 1000 Berlin und 8000 München Einrichtung zum berührungslosen Zertrümmernvon Konkrementen
DE3417985A1 (de) * 1984-05-15 1985-11-21 Dornier System Gmbh, 7990 Friedrichshafen Vorrichtung zur beruehrungsfreien zerkleinerung von konkrementen mit koaxialer ortung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0316863A2 (fr) * 1987-11-16 1989-05-24 Kabushiki Kaisha Toshiba Appareillage de traitement par onde de choc
EP0316863A3 (en) * 1987-11-16 1989-09-20 Kabushiki Kaisha Toshiba Shock wave treatment apparatus
CN116818568A (zh) * 2023-08-31 2023-09-29 中国工程物理研究院流体物理研究所 一种基于光学透镜原理的冲击波调控、验证装置及方法
CN116818568B (zh) * 2023-08-31 2023-11-17 中国工程物理研究院流体物理研究所 一种基于光学透镜原理的冲击波调控、验证装置及方法

Also Published As

Publication number Publication date
JPS6320076A (ja) 1988-01-27

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Inventor name: REICHENBERGER, HELMUT, DR. DIPL.-PHYS.