EP0513279A1 - Vorrichtung zur erzeugung von fokussierten akustischen schallwellen. - Google Patents
Vorrichtung zur erzeugung von fokussierten akustischen schallwellen.Info
- Publication number
- EP0513279A1 EP0513279A1 EP91920223A EP91920223A EP0513279A1 EP 0513279 A1 EP0513279 A1 EP 0513279A1 EP 91920223 A EP91920223 A EP 91920223A EP 91920223 A EP91920223 A EP 91920223A EP 0513279 A1 EP0513279 A1 EP 0513279A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sound
- segments
- generating unit
- sound generating
- axis
- 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
Links
- 230000001225 therapeutic effect Effects 0.000 claims abstract description 6
- 230000005855 radiation Effects 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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 device for generating focused acoustic sound waves for therapeutic applications and in particular for crushing concrements, with a sound generating unit which has at least one sound radiation surface from which sound waves emanate, which are focused by a focusing unit.
- DE 38 35 318 C1 describes a device for generating focused pressure waves for therapeutic applications, in which the sound generating unit is a body that is rotationally symmetrical with respect to an axis passing through the focal point, the jacket surface of which extends in the direction of this axis, the radiation surface for the sound waves is.
- the axially symmetrically emitted sound waves are focused by a reflector which is a paraboloid in the case of a cylindrical sound generating unit, for example.
- a B. flat ring-shaped sound source is used, which radiates the sound waves in "backward direction” onto a reflector, which then focuses the sound waves through the "ring".
- a further device for generating sound waves in which the shock waves generated by a spark gap are focused by an ellipsoid.
- EP 0 209 053 C3 discloses a device for the contact-free crushing of concrements in the body of living beings, in which the sound generating unit working on an electromagnetic basis has the shape of a spherical cap, so that "focused sound waves" are already emitted. Furthermore, it is known, for example from DE 35 43 867 AI, to use piezo oscillators instead of electromagnetic sound generating units, but also magnetic oscillators, which are likewise arranged in the form of a (spherical) spherical cap.
- DE 35 01 838 A1 discloses a device for generating staggered shock waves in which a flat sound generating unit is used, the sound waves of which deflect a first conical reflector onto a second reflector, which then focuses the sound waves.
- small stones can be treated gently with small focus zones.
- Larger stones or multiple stones can, on the other hand, be treated more cheaply with an extended focus zone.
- the invention is based on the object of a device for generating focused acoustic sound waves for therapeutic applications and in particular for the crushing of concrements, with a schail production unit that has at least one sound radiation surface, from which sound waves that are focused by a focusing unit emanate in such a way that the fckus zone can be widened for certain applications.
- the focusing unit is divided into segments that can be moved relative to one another.
- the segments can be pivoted independently of one another about the focal point. Furthermore, the segments can be pivoted independently of one another about an axis running through the focal point (claim 14) or displaceable relative to one another.
- the number of segments is at least two, but three, four or more segments can also be used.
- the focusing unit can have the shape of a spherical cap, the intersecting curves of which are essentially second-order curves (claim 2).
- the intersecting curves of which are essentially second-order curves (claim 2).
- the sound generating unit can be identical to the surface of the focusing unit or, according to claim 6, can be a rotationally symmetrical body in the initial state, the lateral surface of which extends in the direction of the axis of rotation represents a radiating surface for axially symmetrical sound waves, the direction of propagation of which is essentially perpendicular to Rotation axis runs, and which the dome-shaped reflector focuses.
- the sound generating unit can have piezo vibrators (claim 4 or 11) or an electromagnetic pressure wave generating unit, but also other sound generating elements such as magnetostrictive vibrators etc. (claim 5 or 11).
- the dome-shaped focusing unit is a reflector, which focuses the sound waves emanating from the sound radiation surface (s) (claim 6), it is also possible for the sound generating unit to be in is known to be a spark gap, so that the reflector has the shape of an ellipsoid (claim 7)
- the sound generating unit in the initial state is a rotationally symmetrical body, the lateral surface of which extends in the direction of the axis of rotation represents a radiation surface for axially symmetrical sound waves, the direction of propagation of which is essentially perpendicular to the axis of rotation, and which the spherical reflector focuses, it is preferred if the rotationally symmetrical body is also subdivided into segments which can be moved together with the assigned segments of the spherical reflector (claim 12).
- the coupling medium is a liquid and if a housing is provided which at least surrounds the focusing unit and which has an opening which is closed by a sound-permeable, acoustically adapted membrane.
- This design results in a liquid-tight design in a simple manner, which allows the device according to the invention to be handled in the same way as conventional devices.
- the segments are closed in a liquid-tight manner with the exception of a sound outlet opening.
- the sound outlet openings are connected to a liquid-tight space which has an opening which is closed by a sound-permeable, acoustically adapted membrane (claim 18).
- the device according to the invention also allows the simple integration of an X-ray and / or ultrasound locating device for concrements, the observation axis of which intersects the axis of the sound generating device at the focal point or runs in the axis of the sound generating unit (claim 19).
- the observation axis of the X-ray and / or ultrasound locating device runs in the axis of the sound generation unit, it is possible to design the device in such a way that the possibility of movement of the individual segments is used to ensure that their (apart) -) Movement serves to release the observation axis of the locating device, so that a space-saving arrangement of the individual elements is possible.
- a device for generating focused acoustic sound waves for therapeutic applications and in particular for the crushing of concretions which are in the basic state, ie the state in which the segments are not (apart), which is described in DE 38 35 318 Cl device described.
- the device has a sound generation unit 1, which can be an electromagnetic, magnetostrictive or piezoelectric pressure wave generation unit, for example, and which is a rotationally symmetrical body in the initial state.
- the lateral surface 3 of the sound generating unit 1, which extends in the direction of the axis of rotation 2, represents a radiating surface for axially symmetrical sound waves 4, the direction of propagation of which in a coupling medium (not shown in detail) initially runs essentially perpendicular to the axis of rotation 2.
- both the sound generating unit 1 and the reflector 5 are divided into two segments (1, 1 'and 5, 5') in the embodiment shown, which are movable relative to each other in the embodiment shown in that they can be pivoted independently of one another about the focus point F or an axis passing through the focus point.
- the movement of the reflector segments 5 or 5 'takes place together with the assigned segments of the sound generating unit 1 or 1 *.
- the figure shows the case in which the individual parts have already been pivoted by the angle ⁇ .
- the mobility or pivotability of the individual NEN segments 1 and 5 or 1 * and 5 'despite the presence of a coupling medium for the sound waves, such as water, can be realized in that a housing is provided which contains the sound generating unit 1, 1' and the reflector 5, 5 'and which has an opening which is closed off in the manner described, for example, in DE 38 35 318 C1 by a sound-permeable, acoustically adapted membrane.
- the housing and the membrane are not shown in the figure to simplify the illustration.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Surgical Instruments (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4036981 | 1990-11-20 | ||
DE4036981A DE4036981A1 (de) | 1990-11-20 | 1990-11-20 | Vorrichtung zur erzeugung von fokussierten akustischen schallwellen |
PCT/EP1991/002188 WO1992008413A1 (de) | 1990-11-20 | 1991-11-20 | Vorrichtung zur erzeugung von fokussierten akustischen schallwellen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0513279A1 true EP0513279A1 (de) | 1992-11-19 |
EP0513279B1 EP0513279B1 (de) | 1995-10-11 |
Family
ID=6418625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91920223A Expired - Lifetime EP0513279B1 (de) | 1990-11-20 | 1991-11-20 | Vorrichtung zur erzeugung von fokussierten akustischen schallwellen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0513279B1 (de) |
AT (1) | ATE128843T1 (de) |
DE (2) | DE4036981A1 (de) |
WO (1) | WO1992008413A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5595178A (en) * | 1994-10-02 | 1997-01-21 | Hmt High Medical Technologies Gmbh | System, method and apparatus for treatment of degenerative bone |
US7189209B1 (en) | 1996-03-29 | 2007-03-13 | Sanuwave, Inc. | Method for using acoustic shock waves in the treatment of a diabetic foot ulcer or a pressure sore |
US6390995B1 (en) | 1997-02-12 | 2002-05-21 | Healthtronics Surgical Services, Inc. | Method for using acoustic shock waves in the treatment of medical conditions |
US6368292B1 (en) | 1997-02-12 | 2002-04-09 | Healthtronics Inc. | Method for using acoustic shock waves in the treatment of medical conditions |
DE10301875B4 (de) * | 2003-01-17 | 2004-11-18 | Sws Shock Wave Systems Ag | Vorrichtung zur Erzeugung von unterschiedlichen akustischen Druckwellen durch variable Reflexionsflächen |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4029395A (en) * | 1975-10-31 | 1977-06-14 | Westinghouse Electric Corporation | Method for altering the focal zone of a lens system |
DE3150513A1 (de) * | 1981-12-21 | 1983-06-30 | Battelle-Institut E.V., 6000 Frankfurt | "vorrichtung zur lokalen hyperthermiebehandlung" |
DE3501838A1 (de) * | 1985-01-21 | 1986-07-24 | Siemens AG, 1000 Berlin und 8000 München | Einrichtung zur erzeugung zeitlich versetzter stosswellen |
DE3835318C1 (de) * | 1988-10-17 | 1990-06-28 | Storz Medical Ag, Kreuzlingen, Ch | |
JP2602923B2 (ja) * | 1988-10-31 | 1997-04-23 | 株式会社東芝 | 衝撃波治療装置 |
DE3932967A1 (de) * | 1989-10-03 | 1991-04-11 | Wolf Gmbh Richard | Ultraschall-stosswellenwandler |
-
1990
- 1990-11-20 DE DE4036981A patent/DE4036981A1/de not_active Withdrawn
-
1991
- 1991-11-20 AT AT91920223T patent/ATE128843T1/de not_active IP Right Cessation
- 1991-11-20 WO PCT/EP1991/002188 patent/WO1992008413A1/de active IP Right Grant
- 1991-11-20 DE DE59106686T patent/DE59106686D1/de not_active Expired - Lifetime
- 1991-11-20 EP EP91920223A patent/EP0513279B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9208413A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0513279B1 (de) | 1995-10-11 |
DE4036981A1 (de) | 1992-05-21 |
ATE128843T1 (de) | 1995-10-15 |
DE59106686D1 (de) | 1995-11-16 |
WO1992008413A1 (de) | 1992-05-29 |
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