CN1541624A - Lens system for a shock-wave generator - Google Patents
Lens system for a shock-wave generator Download PDFInfo
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- CN1541624A CN1541624A CNA2004100031010A CN200410003101A CN1541624A CN 1541624 A CN1541624 A CN 1541624A CN A2004100031010 A CNA2004100031010 A CN A2004100031010A CN 200410003101 A CN200410003101 A CN 200410003101A CN 1541624 A CN1541624 A CN 1541624A
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- lens
- lens element
- characteristic
- phase shift
- lens combination
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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
- 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
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
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Abstract
Lens system comprises lens elements (2, 4) with one element rotating about an axis of rotation within the radiation path. The lens elements have non-rotational symmetrical bending and/or phase shifting characteristics with respect to the axis of rotation.
Description
Technical field
The present invention relates to a kind of lens combination that is used for surge generator, it comprises at least two lens elements.
Background technology
Surge generator is applied in the therapy equipment of for example diagnosis and treatment calculus (lithotrity), oncosis and orthopaedics disease (bone reparation)., need produce the shock wave sequence by a shock wave source, and make it to focus on the intravital calculus as renal calculus for shatter.In present operational instrument, the structure of shock wave source and concentrating element and geometry size have been determined the geometry of shock wave and curve over time.
Design during impulse source an important requirement be: to improve shatter effect on the one hand, and will reduce the side effect that causes by the unabsorbed acoustic energy of calculus on the other hand.Experimentation to electric liquid impulse source (electricity level source) showed already: the shock wave that is produced relates to action effect and side effect effect proportionate relationship can be improved as follows: make the preceding part of shock wave with respect to main ripple delay be arranged on the time, thereby carry out superposition and reduce by postponing positive composition in the ripple, and thereby reduced the cavitation tendency that has side effects at focus point and the stretching composition that occurred on every side thereof.The experiment that decay part in inventor's shock wave path is done shows: can reduce the surge pressure that focuses on the axis by the several sections before the delay shock wave.At this moment, the treatment focus point just can reduce the generation of acoustic energy greatly, and does not reduce the shatter action effect of individual pulse.
The often spark jump of the electric liquid method of using by the exterior focusing point a kind of temporal extension and a kind of lateral leveling that have produced the focus point profile.Especially electromagnet source has produced geometry and all has been accurate pulse on the time in large-scale instrument and equipment, and these pulses have produced sharp focus based on nonlinear effect.Sharp focus and non-sharpening focus on and cause various crushing mechanism, suitably use by various mode according to the size of calculus, the composition of calculus and shatter progress.
Patent EP 0 254 104 has disclosed a kind of surge generator, and it has a focusing arrangement that has a plurality of lens.This moment with one or more lens or insert light path or the shock wave distance in or from wherein taking out.Scioptics this inserted and taken out the focal zone width is changed.
First shortcoming of this background technology is: it only can change the geometry size of focal zone, and can not change pulse curve.In addition, thisly insert relative big surge generator with the method capacity required of taking out lens.
Patent EP 0 448 291 discloses a kind of ultrasonic probe, has wherein also arranged an axle that is used to make one or two diffraction partial rotation except a piezoelectric element, so that each different portion's section of diffraction part is inserted in the light path.
Summary of the invention
The objective of the invention is to propose a kind of lens combination, it can make the focus point geometry size and the pulse curve of shock wave change, and can the compact structure form make.
The invention provides a kind of lens combination that is used for surge generator, which comprises at least two lens elements, wherein at least one lens element can rotate within light path around a rotation axis, and at least two lens elements have non-rotating symmetric diffraction characteristic and/or phase shift characteristic with respect to rotation axis.The objective of the invention is to have by above-mentioned that lens combination that at least two lens elements are used for sound wave realizes.
Lens element is meant the light-permeable element herein and hereinafter, and it is suitable for changing acoustic radiation.This Change Example is as being focusing or phase shift.The notion of diffraction characteristic must not refer to that corresponding lens element makes beam-focusing, and Beam Spread also is possible.Lens element also can only cause the phase shift of part or all beam and not make it to focus on.In this case the another one lens element can be set, it only is used for focusing on.Also be provided with a lens element except at least two lens elements, it has rotational symmetric diffraction characteristic and/or phase shift characteristic.
Non-rotating symmetric phase shift characteristic can be continuous or discontinuous formation.
At least two lens elements not necessarily must have identical diffraction characteristic and/or phase shift characteristic.As following to go through, if they have different diffraction characteristics and/or phase shift characteristic, then favourable often.
The non-rotating symmetric diffraction characteristic of at least two lens elements and/or phase shift characteristic allow focal zone and pulse change curve to change and realize adaptively, and this is by at least one lens element is realized around the rotation of rotation axis.Because rotation axis is positioned at light path in other words within the sound wave path, thereby guaranteed the compact appearance size of lens combination.Lens needn't be as described above such each the inserting in light path of background technology.
It should be noted that at least one lens element in the lens combination of the present invention not necessarily will be designed to make its cross section that detects whole ripple in a light path (a for example shock wave).Lens element also needn't surround rotation axis fully, and/or must not make in any one mode and be symmetrical in rotation axis.
According to a kind of favourable improvement project, can arrange coaxially that at least two lens and its common axis line can be rotation axiss.
Each lens element in the co-axial layout is meant that at least it perpendicular to the peripheral profile in the plane of rotation axis, is symmetric with respect to rotation axis.Periphery that lens element can have a kind of circle for example.Owing to adopt coaxial arrangement can make its simple and compact structure.In addition, can also make the adjustment of lens position or adaptive easy.
In order to adjust certain focal zone or pulse profile, at least two lens elements are inserted on the given relative position separately.By one of them lens element is fixed, can realize this point and make another center on the rotation axis motion.But it all is rotatable also can making all lens elements.Under the situation of two above lens elements, alternative dispensing means also can be to make some lens elements can be movable, and other are fixed and arranged then.
In a kind of favourable improvement project, the diffraction characteristic of at least two lens elements and/or phase shift characteristic can design like this, can make that the diffraction characteristic and/or the phase shift characteristic of at least two lens elements are maximum in first kind of at least two lens elements given positioned opposite, then be minimum in second kind of given positioned opposite.
The diffraction characteristic of lens element and/or phase shift characteristic may be strengthened substantially in first kind of at least two lens elements given positioned opposite, and they are then compensated substantially at least in part in second kind of given positioned opposite.
In a kind of favourable improvement project, at least the second lens element can have this diffraction characteristic and/or phase shift characteristic, has rotational symmetric diffraction characteristic and/or phase shift characteristic thereby make in a kind of given positioned opposite that is combined in lens element of at least one lens element and second lens element.In this manner, just can compensate the non-rotating symmetric diffraction characteristic and/or the phase shift characteristic of at least one lens element with a kind of given relative position of at least the second lens element, be rotational symmetric thereby make the overall permanence of a lens element and second lens element.
According to a kind of favourable improvement project, second lens element can have diffraction characteristic identical with at least one lens element and/or phase shift characteristic.If thereby two lens elements are on the identical position with respect to rotation axis, their diffraction and/or phase shift effect just are reinforced the biglyyest so.This improvement project also can be simplified the manufacturing of lens.
According to another favourable possibility, second lens can have characteristic a kind of and at least one lens element opposite diffraction characteristic and/or phase shift characteristic.In this manner, in a kind of given positioned opposite of two lens elements, can realize the non-rotating symmetric diffraction of at least one lens element and/or the compensation of phase shift effect.For instance, if at least one lens element has projection in a position, second lens element can have a groove in a corresponding position so.Thereby can in first kind of positioned opposite of lens element, make diffraction and/or phase shift effect reach maximum; In another kind of positioned opposite, can realize the compensation of this effect.The preferred design of at least one and second lens element be by the position with the maximum effect effect relatively rotate about 90 ° to form the positioned opposite with least action effect of two lens elements.
In a kind of favourable improvement project of aforesaid lens combination, at least one lens element can have non-rotating symmetric thickness distribution.Thickness distribution is preferred discontinuous.This just can adjust defined focal zone and/or pulse curve exactly.
As previously mentioned, lens element needn't comprise the cross section of whole ripple.At least one lens element preferably can be designed to annular.So just make a part of ray unaffected.
In a kind of favourable improvement project, at least one lens can adopt at least two kinds of materials.By selecting material suitably, can make lens element with desired characteristic with specific velocity of sound.
At least one lens element can preferably adopt a kind of material, particularly polystyrene of dimensionally stable.
The invention still further relates to a kind of surge generator with lens combination of an aforementioned type.Use this surge generator and can make shock wave when treatment, can adapt to different patients, and under the identical therapeutic effect situation of maintenance, reduced side effect.
Description of drawings
Fig. 1 is according to the first embodiment sketch map of lens combination of the present invention in the surge generator;
Figure 2 shows that the second embodiment sketch map according to lens combination of the present invention, this lens combination has the lens element of first kind of positioned opposite in surge generator;
The lens devices focal zone change curve of Fig. 3 a pictorial image 2;
Fig. 3 b illustrates the pulse change curve of lens devices shown in Figure 2;
Fig. 4 has second kind of embodiment of the another kind layout of two lens;
Fig. 5 a illustrates the focus point change curve of lenticular element arrangement shown in Figure 4;
Fig. 5 b illustrates the pulse change curve of lenticular element arrangement shown in Figure 4.
The specific embodiment
Below with reference to the accompanying drawings other features and advantages of the present invention are described.
Fig. 1 has represented an a kind of embodiment according to surge generator of the present invention.Surge generator comprises an impulse source 1, and it is a plane (as shown in FIG.) or a columniform electromagnet source for example, the voltage source of plane or segment shape.Put a convex lens 2 at the light path lining of shock wave, it is used to make shock wave focusing.Side at the impulse source dorsad of lens 2 is provided with groove 3.
Along arranging another one lens element 4 on the radiation direction of lens element 2, it only is used for phase shift, and is not used in focusing.Lens element 4 is provided with projection 5.The height of projection 5 is corresponding to the degree of depth of groove 3.Two lens elements 2 and 4 are with respect to axis 6 coaxial arrangement, and wherein lens element 4 can be around axis 6 rotations, as the arrow indication.
In lens 2 shown in Figure 1 and the 4 mutual opposite positions, owing to groove 3 and projection 5 phase shifts that realize compensate mutually.Owing to having opposite phases mutually, mutual corresponding delay distance or these two lens elements of acceleration distance in lens element 2 and 4 move characteristic.Be that 9 line is indicated before the shock wave that is drawn with label.
If make lens element 4 around axis 6 rotations, make step 3 and 5 positions corresponding mutually no longer up and down, shock wave is according to the different different distances of lens of passing through with 4 position of lens element 2 so.Thereby according to the difference of selected materials, a part of shock wave has produced with respect to another part shock wave and has quickened or postpone.
If do not adopt structure shown in Figure 1, groove 3 and projection 5 also can extend to the center of lens always.Except shown in the ladder with certain certain height or degree of depth, also can adopt other to have the different height or the ladder of the degree of depth.Shown ladder also can the different overall dimensions of tool, and the ladder that this both had been applicable in the lens element also is applicable to the ladder of different lens elements.
Lens element can by a kind of have than material of the higher velocity of sound of propagation medium (as water) (for example polystyrene (polistyrol)) on every side or material (for example silicone rubber) with lower velocity of sound make.For the consideration of shape stability, lens element can be made by a kind of material (for example polystyrene) of dimensionally stable.
The rotation of lens element 4 can be carried out with the outside with the control stick that hands passes through or for example realize with the equipment that has a servomotor.Other lens element also can be mobilizable.
Fig. 2 has represented a kind of another embodiment according to surge generator of the present invention.In this example, be a convex lens 2 towards electromagnet source 1, it only is used to make shock wave focusing.Lens 2 back are two lens elements 7 and 8, and they have identical phase shift characteristic respectively.Shown in layout in the thickness of lens element all increase left and to the right with center.
The forms that lens element 7 and 8 is mutually arranged in Fig. 2 can make the phase place of two lens elements strengthen the biglyyest, and this is that (when using a kind of material that has than the low velocity of sound of surrounding medium) overlaps up and down because the position of Phase delay.
Represent with line 9 before the shock wave that is drawn.Just as known, before the edge on the wavefront left side and the right and the shock wave that does not have to postpone 10 compare slightly backward.Shown isobar has drawn the corresponding pressure distribution of focal zone 11.
Fig. 3 a shows the position correlation of pressure p once more.The space blooming effect before the shock wave as can be seen therefrom.Fig. 3 b shows the pulse change curve.Before the shock wave in time blooming effect thereby also be maximum.
Fig. 4 shows the embodiment of the lens combination among Fig. 2, has wherein rotated about 90 ° mutually the relative layout shown in Figure 2 with 8 of lens element 7 herein.Therefore compensated phase shift.Each part of shock wave all sees through has different with the surrounding medium velocity of sound same material thicknesses, thereby produces identical acceleration or delay before making whole shock wave.The shock wave that is produced preceding 10 is therefore corresponding to a surge generator that does not have lens element 7 and 8.
The pulse change curve of pressure distribution that is produced or generation is shown in Fig. 5 a and 5b.Therefrom as can be seen shock wave both (Fig. 5 (Fig. 5 b) a) also in time focused on the biglyyest with the space.
Lens element shown in the embodiment is just to the explanation according to lens combination of the present invention.Obviously, for example lens 7 and/or 8 also can be arranged in convex lens 2 fronts.And, also can consider to adopt the assembled scheme of the lens element that especially has other thickness distribution or form by different materials.
Show electromagnetic impact source, plane in these embodiments.The lens element that is used for other impulse source (for example cylindrical or segment shape source) can design with analogical pattern.
Although the present invention is illustrated with reference to accompanying drawing and preferred embodiment,, for a person skilled in the art, the present invention can have various changes and variation.Various change of the present invention, variation and equivalent are contained by the content of appending claims.
Claims (12)
1. have at least two lens elements (2,4,7,8) the lens combination that is used for sound wave, wherein at least one lens element can rotate within light path around a rotation axis, and described at least two lens elements do not have rotational symmetric diffraction characteristic and/or phase shift characteristic with respect to rotation axis.
2. lens combination according to claim 1, wherein said at least two lens elements are arranged coaxially, and common axis line is rotation axis (6).
3. according to claim 1 or 2 described lens combinations, the design of the diffraction characteristic of wherein said at least two lens elements and/or phase shift characteristic should make in the diffraction of described two lens elements and/or the first kind of given positioned opposite that phase shift acts on described two lens elements to maximum at least at least, and be minimum in second kind of given positioned opposite.
4. the described lens combination of each claim in requiring according to aforesaid right, wherein at least the second lens element has a kind of like this diffraction characteristic and/or phase shift characteristic, can make in a kind of given positioned opposite that is combined in described lens element of at least one and second described lens element to have a kind of rotational symmetric diffraction characteristic and/or phase shift characteristic.
5. lens combination according to claim 4, wherein second described lens element has diffraction characteristic identical with at least one described lens element and/or phase shift characteristic.
6. lens combination according to claim 4, wherein second described lens element has diffraction characteristic opposite with the characteristic of at least one described lens element and/or phase shift characteristic.
7. the described lens combination of each claim in requiring according to aforesaid right, wherein at least one described lens element has non-rotating symmetric thickness distribution.
8. lens combination according to claim 7, wherein said thickness distribution is discontinuous.
9. the described lens combination of each claim in requiring according to aforesaid right, wherein said at least one lens element is designed to ring-type.
10. the described lens combination of each claim in requiring according to aforesaid right, wherein said at least one lens element has adopted at least two kinds of materials.
11. require arbitrary described lens combination according to aforesaid right, wherein at least one described lens element has adopted a kind of material, particularly polystyrene of dimensionally stable.
12. have according to the arbitrary described surge generator that has lens combination of aforesaid right requirement.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10304435.3 | 2003-02-04 | ||
| DE2003104435 DE10304435B3 (en) | 2003-02-04 | 2003-02-04 | Lens system for a shockwave generator for treating stones, tumors and bones comprises lens elements with one element rotating about an axis of rotation within the radiation path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1541624A true CN1541624A (en) | 2004-11-03 |
Family
ID=32520132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100031010A Pending CN1541624A (en) | 2003-02-04 | 2004-02-04 | Lens system for a shock-wave generator |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1445758A2 (en) |
| CN (1) | CN1541624A (en) |
| DE (1) | DE10304435B3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640917A (en) * | 2016-06-28 | 2019-04-16 | 海因派克兹有限公司 | Ballistic shock wave focusing waveguide |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8257282B2 (en) | 2004-02-19 | 2012-09-04 | General Patent, Llc | Pressure pulse/shock wave apparatus for generating waves having plane, nearly plane, convergent off target or divergent characteristics |
| US7507213B2 (en) | 2004-03-16 | 2009-03-24 | General Patent Llc | Pressure pulse/shock wave therapy methods for organs |
| US7578796B2 (en) | 2004-10-22 | 2009-08-25 | General Patent Llc | Method of shockwave treating fish and shellfish |
| US7544171B2 (en) | 2004-10-22 | 2009-06-09 | General Patent Llc | Methods for promoting nerve regeneration and neuronal growth and elongation |
| US7537572B2 (en) | 2004-10-22 | 2009-05-26 | General Patent, Llc | Treatment or pre-treatment for radiation/chemical exposure |
| US7497836B2 (en) | 2004-10-22 | 2009-03-03 | General Patent Llc | Germicidal method for treating or preventing sinusitis |
| US7601127B2 (en) | 2004-10-22 | 2009-10-13 | General Patent, Llc | Therapeutic stimulation of genital tissue or reproductive organ of an infertility or impotence diagnosed patient |
| US7497834B2 (en) | 2004-10-22 | 2009-03-03 | General Patent Llc | Germicidal method for eradicating or preventing the formation of biofilms |
| US7600343B2 (en) | 2004-10-22 | 2009-10-13 | General Patent, Llc | Method of stimulating plant growth |
| US7497835B2 (en) | 2004-10-22 | 2009-03-03 | General Patent Llc | Method of treatment for and prevention of periodontal disease |
| US7988648B2 (en) | 2005-03-04 | 2011-08-02 | General Patent, Llc | Pancreas regeneration treatment for diabetics using extracorporeal acoustic shock waves |
| US7610079B2 (en) | 2006-07-25 | 2009-10-27 | Ast Gmbh | Shock wave imaging system |
| US7888847B2 (en) | 2006-10-24 | 2011-02-15 | Dennis Raymond Dietz | Apodizing ultrasonic lens |
| DE102006050781A1 (en) | 2006-10-27 | 2008-04-30 | Ast Gmbh | Device for the spatial positioning of a device |
| US8529451B2 (en) | 2007-10-01 | 2013-09-10 | General Patent, Llc | Shock wave coupling adapter and method of use |
| US11389370B2 (en) | 2016-04-18 | 2022-07-19 | Softwave Tissue Regeneration Technologies, Llc | Treatments for blood sugar levels and muscle tissue optimization using extracorporeal acoustic shock waves |
| US11389371B2 (en) | 2018-05-21 | 2022-07-19 | Softwave Tissue Regeneration Technologies, Llc | Acoustic shock wave therapeutic methods |
| US11389372B2 (en) | 2016-04-18 | 2022-07-19 | Softwave Tissue Regeneration Technologies, Llc | Acoustic shock wave therapeutic methods |
| US11458069B2 (en) | 2016-04-18 | 2022-10-04 | Softwave Tissue Regeneration Technologies, Llc | Acoustic shock wave therapeutic methods to treat medical conditions using reflexology zones |
| US11389373B2 (en) | 2016-04-18 | 2022-07-19 | Softwave Tissue Regeneration Technologies, Llc | Acoustic shock wave therapeutic methods to prevent or treat opioid addiction |
| CN112370664B (en) * | 2019-07-24 | 2022-02-22 | 梁山县人民医院 | Infrared treatment equipment for rheumatism immunity department |
| RU197438U1 (en) * | 2020-01-09 | 2020-04-27 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет геосистем и технологий" (СГУГиТ) | Subwave focusing device for surface elastic waves |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0254104B1 (en) * | 1986-07-16 | 1990-10-03 | Siemens Aktiengesellschaft | Shock-wave generator for producing an acoustic shock-wave pulse |
| JPH03272752A (en) * | 1990-03-20 | 1991-12-04 | Fujitsu Ltd | Ultrasonic probe |
-
2003
- 2003-02-04 DE DE2003104435 patent/DE10304435B3/en not_active Expired - Fee Related
-
2004
- 2004-01-20 EP EP20040001091 patent/EP1445758A2/en not_active Withdrawn
- 2004-02-04 CN CNA2004100031010A patent/CN1541624A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640917A (en) * | 2016-06-28 | 2019-04-16 | 海因派克兹有限公司 | Ballistic shock wave focusing waveguide |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10304435B3 (en) | 2004-07-15 |
| EP1445758A2 (en) | 2004-08-11 |
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