EP0108190A2 - Réflecteur d'ondes de choc - Google Patents

Réflecteur d'ondes de choc Download PDF

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Publication number
EP0108190A2
EP0108190A2 EP83106090A EP83106090A EP0108190A2 EP 0108190 A2 EP0108190 A2 EP 0108190A2 EP 83106090 A EP83106090 A EP 83106090A EP 83106090 A EP83106090 A EP 83106090A EP 0108190 A2 EP0108190 A2 EP 0108190A2
Authority
EP
European Patent Office
Prior art keywords
reflector
wave
die
shock wave
der
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.)
Granted
Application number
EP83106090A
Other languages
German (de)
English (en)
Other versions
EP0108190B1 (fr
EP0108190A3 (en
Inventor
Othmar Dr.Rer.Nat. Wess
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 System GmbH
Original Assignee
Dornier System 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 System GmbH filed Critical Dornier System GmbH
Publication of EP0108190A2 publication Critical patent/EP0108190A2/fr
Publication of EP0108190A3 publication Critical patent/EP0108190A3/de
Application granted granted Critical
Publication of EP0108190B1 publication Critical patent/EP0108190B1/fr
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
    • 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
    • G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors

Definitions

  • the invention relates to a reflector for focusing shock waves for the contact-free comminution of concrements in bodies of living beings according to the German application P 23 51 247.
  • the reflector has the shape of an ellipsoid and has the task of focusing shock waves that are generated on a spark gap in the first focal point and spread through a liquid in the reflector onto the second focal point, in which the calculus to be destroyed, for example a kidney stone, is located .
  • the reflector should have as high proportion of W generated in the first focus elle energy as possible in the correct phase in the second focus transmitted.
  • Reflectors made of brass are known with an enclosure angle of approximately 250 °, whereby the full solid angle (4 ⁇ ) is used to approximately 90% and an axis ratio a: b of approximately 2: 1 (E. Schmiedt: Contributions to Urology, Vol. 2, pages 8-13, Kunststoff 1980).
  • the other constraints such as stability and easy workability have led to the use of brass.
  • the invention has for its object to provide a reflector that focuses shock waves with a higher efficiency than the reflectors known from the prior art.
  • the invention is based on the knowledge that it is not the jump in sound wave resistance ⁇ ⁇ c that alone is the decisive variable for good focusing, but that the speeds of the sound wave in the reflector material and must be coordinated in the liquid.
  • the waves hitting the surface of the reflector stimulate the latter, among other things, to transversal vibrations which propagate with characteristic propagation speeds in the reflector material and on its surface.
  • the reflected wavefront is disturbed if, due to time differences, the reflection surface already swings in the direction of the surface normal when the primary wavefront arrives.
  • In-phase focusing in the second focal point is achieved when the wave propagates faster in the liquid than in the reflector.
  • the wavefront then always meets a stationary reflector surface.
  • materials can also be used whose transverse surface speed is greater than the speed of sound in the coupling medium, e.g. Water is when only the leading of the surface wave is prevented by the geometry of the reflector by observing the condition mentioned in claim 1.
  • the reflected useful wave itself remains undisturbed and retains the original steepness of the primary wave. All other faults - e.g. are generated by the lagging surface wave - follow the useful wave with a time delay and cannot impair the focusing process.
  • Reflectors according to the invention realize a much better focusing than before, since all wave components overlap in phase.
  • the slope of the pressure rise which is essential for comminution, remains high.
  • the shredding performance increases, fewer applications than before are necessary, which relieves the patient and increases the service life of the spark gap.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Surgical Instruments (AREA)
EP83106090A 1982-11-06 1983-06-22 Réflecteur d'ondes de choc Expired EP0108190B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3241026A DE3241026C2 (de) 1982-11-06 1982-11-06 Reflektor zur Fokussierung von Stoßwellen
DE3241026 1982-11-06

Publications (3)

Publication Number Publication Date
EP0108190A2 true EP0108190A2 (fr) 1984-05-16
EP0108190A3 EP0108190A3 (en) 1984-07-25
EP0108190B1 EP0108190B1 (fr) 1986-09-24

Family

ID=6177450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106090A Expired EP0108190B1 (fr) 1982-11-06 1983-06-22 Réflecteur d'ondes de choc

Country Status (4)

Country Link
US (1) US4570634A (fr)
EP (1) EP0108190B1 (fr)
JP (1) JPS5988146A (fr)
DE (2) DE3241026C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2623080A1 (fr) * 1987-11-16 1989-05-19 Technomed Int Sa Procede de fabrication d'un dispositif generateur d'ondes de choc indolores et dispositif et appareil ainsi fabriques
WO1990004359A2 (fr) * 1988-10-17 1990-05-03 Storz Medical Ag Dispositif de production d'ondes acoustiques de pression focalisees
USRE33590E (en) * 1983-12-14 1991-05-21 Edap International, S.A. Method for examining, localizing and treating with ultrasound
US5080101A (en) * 1983-12-14 1992-01-14 Edap International, S.A. Method for examining and aiming treatment with untrasound
US5150712A (en) * 1983-12-14 1992-09-29 Edap International, S.A. Apparatus for examining and localizing tumors using ultra sounds, comprising a device for localized hyperthermia treatment

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8400504A (nl) * 1984-02-16 1985-09-16 Optische Ind De Oude Delft Nv Inrichting voor het aanrakingsloos vergruizen van zich in een lichaam bevindende concrementen.
DE3617032C2 (de) * 1985-05-24 1997-06-05 Elscint Ltd Lithotripsiegerät mit extrakorporalem Stoßwellengenerator
DE3544344A1 (de) * 1985-12-14 1987-06-19 Dornier Medizintechnik Vorrichtung zur thromboisierung mittels stosswellen
FR2600520B1 (fr) * 1986-06-30 1990-09-21 Technomed Int Sa Appareil de generation d'ondes de choc de frequence elevee dans un liquide pour la destruction a distance de cibles, telles que des concretions dont la connectique d'alimentation en courant electrique est disposee a l'interieur d'un element tubulaire limitant ou empechant les fuites electromagnetiques
CS261485B1 (en) * 1986-10-29 1989-02-10 Jiri Mudr Rndr Benes Device for clinic out-of-body lithotripsy of gall stones
DE3900433A1 (de) * 1989-01-10 1990-07-12 Schubert Werner Verfahren und vorrichtung fuer die behandlung von erkrankungen mit ultraschallwellen
SE465552B (sv) * 1989-03-21 1991-09-30 Hans Wiksell Anordning foer soenderdelning av konkrement i kroppen paa en patient
US5065761A (en) * 1989-07-12 1991-11-19 Diasonics, Inc. Lithotripsy system
US4945898A (en) * 1989-07-12 1990-08-07 Diasonics, Inc. Power supply
IL128404A0 (en) * 1999-02-07 2000-01-31 Spector Avner Device for transmission of shock waves on to large surfaces of human tissue
US6755796B2 (en) 1999-02-07 2004-06-29 Medispec Ltd. Pressure-pulse therapy apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302163A (en) * 1965-08-31 1967-01-31 Jr Daniel E Andrews Broad band acoustic transducer
DE2508494A1 (de) * 1975-02-27 1976-09-02 Hansrichard Dipl Phys D Schulz Anordnung zum fokussieren von elektromagnetischen oder mechanischen wellen
DE2538960A1 (de) * 1975-09-02 1977-04-07 Dornier System Gmbh Einrichtung zum beruehrungsfreien zertruemmern von im koerper eines lebewesens befindlichen konkrementen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1264681B (de) * 1961-07-05 1968-03-28 Siemens Ag Fuer die medizinische Ultraschalldiagnose nach dem Impuls-Echoverfahren bestimmtes ultraschall-spiegeloptisches System zum Senden und Empfangen von Ultraschallwellen
CH574734A5 (fr) * 1973-10-12 1976-04-30 Dornier System Gmbh
US4311147A (en) * 1979-05-26 1982-01-19 Richard Wolf Gmbh Apparatus for contact-free disintegration of kidney stones or other calculi

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302163A (en) * 1965-08-31 1967-01-31 Jr Daniel E Andrews Broad band acoustic transducer
DE2508494A1 (de) * 1975-02-27 1976-09-02 Hansrichard Dipl Phys D Schulz Anordnung zum fokussieren von elektromagnetischen oder mechanischen wellen
DE2538960A1 (de) * 1975-09-02 1977-04-07 Dornier System Gmbh Einrichtung zum beruehrungsfreien zertruemmern von im koerper eines lebewesens befindlichen konkrementen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BIOMEDIZINISCHE TECHNIK, Band 22, Nr. 7/8, Juli/August 1977, Seiten 164-169 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111822A (en) * 1983-12-14 1992-05-12 Edap International, S.A. Piezoelectric article
US5080102A (en) * 1983-12-14 1992-01-14 Edap International, S.A. Examining, localizing and treatment with ultrasound
US5150712A (en) * 1983-12-14 1992-09-29 Edap International, S.A. Apparatus for examining and localizing tumors using ultra sounds, comprising a device for localized hyperthermia treatment
US5080101A (en) * 1983-12-14 1992-01-14 Edap International, S.A. Method for examining and aiming treatment with untrasound
US5143073A (en) * 1983-12-14 1992-09-01 Edap International, S.A. Wave apparatus system
USRE33590E (en) * 1983-12-14 1991-05-21 Edap International, S.A. Method for examining, localizing and treating with ultrasound
WO1989005026A1 (fr) * 1987-11-16 1989-06-01 Technomed International S.A. Dispositif de generation d'ondes de choc muni d'un reflecteur ellipsoidal
FR2623080A1 (fr) * 1987-11-16 1989-05-19 Technomed Int Sa Procede de fabrication d'un dispositif generateur d'ondes de choc indolores et dispositif et appareil ainsi fabriques
US5233980A (en) * 1987-11-16 1993-08-10 Technomed International Societe Anonyme Apparatus and method for generating shockwaves for the destruction of targets, particularly in extracorporeal lithotripsy
EP0369177A3 (fr) * 1988-10-17 1990-08-16 Storz Medical Ag Dispositif pour générer des ondes de choc acoustiques focalisées
WO1990004359A3 (fr) * 1988-10-17 1990-06-28 Storz Medical Ag Dispositif de production d'ondes acoustiques de pression focalisees
EP0369177A2 (fr) * 1988-10-17 1990-05-23 Storz Medical Ag Dispositif pour générer des ondes de choc acoustiques focalisées
WO1990004359A2 (fr) * 1988-10-17 1990-05-03 Storz Medical Ag Dispositif de production d'ondes acoustiques de pression focalisees
US8099154B1 (en) 1988-10-17 2012-01-17 Storz Medical Ag Apparatus for generating focused acoustical pressure waves

Also Published As

Publication number Publication date
JPH0417660B2 (fr) 1992-03-26
JPS5988146A (ja) 1984-05-22
EP0108190B1 (fr) 1986-09-24
DE3241026A1 (de) 1984-05-10
DE3366440D1 (en) 1986-10-30
DE3241026C2 (de) 1986-12-04
US4570634A (en) 1986-02-18
EP0108190A3 (en) 1984-07-25

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