CN1669672A - Piezoelectric type multi array element high intensity focusing ultrasonic transducer and focusing method - Google Patents
Piezoelectric type multi array element high intensity focusing ultrasonic transducer and focusing method Download PDFInfo
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- CN1669672A CN1669672A CN 200510038963 CN200510038963A CN1669672A CN 1669672 A CN1669672 A CN 1669672A CN 200510038963 CN200510038963 CN 200510038963 CN 200510038963 A CN200510038963 A CN 200510038963A CN 1669672 A CN1669672 A CN 1669672A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 2
- 230000002463 transducing effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000002277 temperature effect Effects 0.000 abstract 1
- 238000002604 ultrasonography Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The invention relates to a piezoelectric focusing ultrasonic transducer, which comprises a concave spherical lightening housing (1), a unit focusing energy converter (2), an end cap (3), a gasket (4), a connector base (5) and an insulating connector base (6). The method uses the polyvalent secondary focusing method to geometrical focus with high intensity. The device can produce the high-intensity focusing ultrasonic with prompt high pressure and temperature effect, and has small focus range and large acoustic pressure, and the system is stable, and it can be widely used in the biology, medical treatment, manufacturing and other technique fields.
Description
Technical field
The piezoelectric type multi array element high intensity focusing ultrasonic transducer of indication of the present invention and focus method belong to ultrasonic transducer, can produce the high intensity focused ultrasound with TRANSIENT HIGH TEMPERATURE high pressure effect, are widely used in biology, medical treatment, manufacturing and other technical fields.
Background technology
By piezoelectric transducer being applied the Pulse Electric excitation, piezoelectric transducer can produce pulse ultrasonic wave.Adopt suitable focusing technology, can form high intensity focused ultrasound, have the TRANSIENT HIGH TEMPERATURE high pressure characteristics at focal zone.
Present existing focus ultrasonic mode has: polynary relevant focusing, polynary incoherent focusing, phase-control focusing, unit sound lens focusing and the self-focusing of concave spherical surface wafer etc.But, consider factors such as complex manufacturing technology degree and system stability, sound lens focusing and the concave spherical surface wafer self-focusing dual modes of adopting in the use more.Comparatively speaking, above-mentioned two kinds of type of focusing performances are close, but latter's processing technology and cost are higher than the former far away.
By the Searches of Patent Literature, the patent of invention that Shanghai Communications University and Wuxi Haiying Electronic Medical Systems Inc. declare jointly " high-intensity focus supersonic tumor treatment transducer array " (number of patent application: 03129407.3), form by matching layer and piezoelectric ceramic piece.Matching layer is the acoustic radiation layer of a uniform recessed ball shell bowl-type of thickness, all piezoelectric ceramic pieces are glued on the outer surface of same matching layer, adopted a plurality of identical piezoelectric ceramic pieces to constitute a large aperture tight mosaic transducer array of concave spherical surface altogether, had very high battle array and focus on acoustic ratio and symmetric focusing acoustic field characteristic.But this invention is not considered matching layer to hyperacoustic refraction effect, and altogether the geometric ball of concave spherical surface is in the heart in the large aperture for the area for sound,focal of each unit transducer.
The utility model patent that declare the Yuande bio-medicine engineering stock Co., Ltd " a kind of focusing ultrasonic source " (number of patent application: 01270265.X), a kind of focusing ultrasonic source is provided, comprise the focusing block that is used to launch hyperacoustic ultrasound emitting device and is used to make the ultrasound wave focusing of being launched, institute's ultrasonic waves transmitted passes to focus with the form near spherical wave after described focusing block focuses on, and focusing performance all obviously is better than angle, existing small-bore wave source after tested.But because the restriction of the acoustical power of unit transducer, its focus supersonic intensity is less than normal.
Summary of the invention
Take all factors into consideration the characteristics of demand of high-intensity focusing ultrasonic transducer, the objective of the invention is to develop a kind of novel piezoelectric type multi array element high intensity focusing ultrasonic transducer, produce high intensity focused ultrasound with TRANSIENT HIGH TEMPERATURE high pressure effect.It is little to have burnt territory, and acoustic pressure is big, the advantage of system stability and Energy Controllable, can be widely used in biology, medical treatment, manufacturing and other technical fields.
The piezoelectric type multi array element high intensity focusing ultrasonic transducer of realizing above-mentioned target comprises concave spherical surface lightweight housing, can be installed on a plurality of unit focused transducer that is symmetrically distributed in the concave spherical surface lightweight housing and (among the present invention be seven, if be used for medical field, unit, concave spherical surface lightweight housing center focused transducer can be replaced with other tests and setting element), end cap places concave spherical surface lightweight housing upper end, by the sealing gasket sealing, piezoelectric ceramics sticks on the acoustic lens back side and constitutes the unit focused transducer between the two.The present invention adopts polynary secondary focusing method, and promptly the unit transducer adopts sound lens focusing, and each unit transducer is installed in again on the same concave spherical surface, realizes the secondary geometric focusing.
The advantage separately of combining unit sound lens focusing and polynary focusing, on this basis, a kind of novel multi array element high intensity focusing ultrasonic transducer technology of creationary proposition, adopt polynary secondary focusing method, avoided the too much shortcoming of unit sound lens focusing ultrasound intensity less than normal and polynary focusing piezoelectric ceramic piece number.Therefore, apparatus of the present invention are simple in structure, and are easy to use, with low cost.
Description of drawings
Fig. 1. the piezoelectric type multi array element high intensity focusing ultrasonic transducer structural representation
Number in the figure title: 1. concave spherical surface lightweight housing, 2. unit focused transducer, 3. end cap, 4. sealing gasket, 5. junction block, 6. insulation Connection Block
Fig. 2 concave spherical surface lightweight housing sketch map
Fig. 3 unit focused transducer sketch map
Number in the figure title: 7. acoustic lens, 8. piezoelectric ceramics.
Fig. 4 end cap sketch map
Fig. 5. piezoelectric type multi array element high intensity focusing ultrasonic transducer uses sketch map
Number in the figure title: 9. piezoelectric type multi array element high intensity focusing ultrasonic transducer, 10. large power supersonic power supply
The specific embodiment
Concrete formation of the present invention is: as shown in Figure 1, a plurality of unit transducer 2 is housed in the installing hole of concave spherical surface lightweight housing 1, end cap 3 places concave spherical surface lightweight housing 1 upper end, between the two with sealing gasket 4 sealings.Concave spherical surface lightweight housing 1 as shown in Figure 2, on concave spherical surface lightweight housing 1, the installing hole of array of designs formula unit focused transducer 2, each axially bored line intersect at above-mentioned concave spherical surface lightweight housing centre of sphere place; According to sound focusing focal length experience computing formula:
Wherein: with the spherical radius R of the concave spherical surface lightweight housing sound focusing focal length as unit focused transducer 2, r is the concave spherical surface radius of a ball of acoustic lens 7 in the unit focused transducer 2, C
1Be the velocity of sound in acoustic lens 7 materials, C
2Be the velocity of sound in the ultrasonic wave transmission medium.C
1With C
2Can or consult relevant handbook and learn by actual measurement.
The unit focused transducer is made up of concave spherical surface acoustic lens 7 and the piezoelectric ceramics that sticks on concave spherical surface acoustic lens tool back plane as shown in Figure 3.Can calculate the radius of a ball r of acoustic lens 7 concave spherical surfaces of unit focused transducer 2 by formula (1), process acoustic lens 7 concave spherical surfaces with this.Each unit focused transducer is installed in the concave spherical surface lightweight housing 1, thereby guarantees that pulse ultrasonic wave that each unit focused transducer sends can converge in how much centre of sphere places of concave spherical surface lightweight housing 1.
The number of unit focused transducer is by unit focused transducer and the concrete size decision of concave spherical surface lightweight housing, design according to actual needs.
For guaranteeing focusing accuracy, can adopt numerical-control processing method, by a clamping, on concave spherical surface lightweight housing 1, process all unit transducer installing holes, guarantee the positional precision and the cylindricity requirement in each hole.
The acoustic lens 7 of unit focused transducer 2 is made by duralumin, can adopt numerical-control processing method, by a clamping, satisfies required Surface Machining precision and quality, guarantees bonding quality and acoustics focusing effect;
Adopt special technique for sticking, guarantee the bonding quality of piezoelectric ceramics 8 and acoustic lens 7.
End cap 3 as shown in Figure 4.
Sketch map when shown in Figure 5 is the piezoelectric type multi array element high intensity focusing ultrasonic transducer use is about to large power supersonic power supply 10 and links to each other with piezoelectric type multi array element high intensity focusing ultrasonic transducer 9 by the junction block 5 on the end cap 3.
Claims (4)
1, a kind of piezoelectric type multi array element high intensity focusing ultrasonic transducer, it is characterized in that: unit focused transducer (2) is fixed in the concave spherical surface lightweight housing (1) by installing hole, the back side that piezoelectric ceramics (8) is bonded in acoustic lens 7 constitutes unit transducing focused transducer (2), end cap (3) places concave spherical surface lightweight housing (1) upper end, sealing gasket (4) sealing, junction block (5) is positioned on the end cap (3), utilizes insulation Connection Block (6) can satisfy the requirement of installing and using of whole transducer.
2, a kind of focus method of piezoelectric type multi array element high intensity focusing ultrasonic transducer, it is characterized in that, adopt polynary secondary focusing method, promptly the unit transducer adopts sound lens focusing, each unit transducer is installed in again on the same concave spherical surface, realizes the secondary geometric focusing.
3, piezoelectric type multi array element high intensity focusing ultrasonic transducer according to claim 1 is characterized in that, concave spherical surface lightweight housing (1) concave spherical surface radius (R) equates with unit focused transducer (2) sound focusing focal length (f), thereby meeting geometric focusing needs;
According to claim 1 or 3 described piezoelectric type multi array element high intensity focusing ultrasonic transducers, it is characterized in that 4, acoustic lens (7) front of unit focused transducer (2) is a concave spherical surface, its radius of a ball (r) can be by empirical equation
Calculate; The back side is the plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200510038963 CN1669672A (en) | 2005-04-20 | 2005-04-20 | Piezoelectric type multi array element high intensity focusing ultrasonic transducer and focusing method |
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| CN 200510038963 CN1669672A (en) | 2005-04-20 | 2005-04-20 | Piezoelectric type multi array element high intensity focusing ultrasonic transducer and focusing method |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008011759A1 (en) * | 2006-07-21 | 2008-01-31 | Beijing Yuande Bio-Medical Engineering Co., Ltd. | An ultrasound phase-control focusing transducer based on spherical lens |
| CN101947696A (en) * | 2010-09-26 | 2011-01-19 | 哈尔滨工业大学 | Welding device for compounding ultrasonic focusing sound field with molten pole arc welding |
| CN102319486A (en) * | 2011-06-21 | 2012-01-18 | 四川大学 | The shape memory of focus supersonic Synchronization Control shape memory drug-carrying polymer and the method for drug release |
| CN103997975A (en) * | 2011-12-22 | 2014-08-20 | 皇家飞利浦有限公司 | Calculating the ultrasonic intensity estimate using an incoherent sum of the ultrasonic pressure generated by multiple transducer elements |
| CN104684658A (en) * | 2012-06-06 | 2015-06-03 | 国家科学研究中心 | Device and method for focusing pulses |
| CN105392529A (en) * | 2013-03-28 | 2016-03-09 | 华盛顿大学商业化中心 | Focused ultrasound apparatus and methods of use |
| JP2019146980A (en) * | 2012-04-30 | 2019-09-05 | ザ リージェンツ オブ ザ ユニヴァシティ オブ ミシガン | Ultrasound therapy system, methods of designing and manufacturing ultrasound system |
| US10780298B2 (en) | 2013-08-22 | 2020-09-22 | The Regents Of The University Of Michigan | Histotripsy using very short monopolar ultrasound pulses |
| CN112504926A (en) * | 2020-11-25 | 2021-03-16 | 长江水利委员会长江科学院 | Ultrasonic suspended load measurement system and method based on multi-frequency backscattering principle |
| CN112894116A (en) * | 2020-12-28 | 2021-06-04 | 上海骄成机电设备有限公司 | Ultrasonic welding head and ultrasonic welding device |
| CN113058834A (en) * | 2021-03-23 | 2021-07-02 | 苏州希声科技有限公司 | Double-frequency focusing transducer for biological sample pretreatment and driving method thereof |
| US11135454B2 (en) | 2015-06-24 | 2021-10-05 | The Regents Of The University Of Michigan | Histotripsy therapy systems and methods for the treatment of brain tissue |
| US11364042B2 (en) | 2005-09-22 | 2022-06-21 | The Regents Of The University Of Michigan | Histotripsy for thrombolysis |
| US11432900B2 (en) | 2013-07-03 | 2022-09-06 | Histosonics, Inc. | Articulating arm limiter for cavitational ultrasound therapy system |
| US11648424B2 (en) | 2018-11-28 | 2023-05-16 | Histosonics Inc. | Histotripsy systems and methods |
| US11813485B2 (en) | 2020-01-28 | 2023-11-14 | The Regents Of The University Of Michigan | Systems and methods for histotripsy immunosensitization |
-
2005
- 2005-04-20 CN CN 200510038963 patent/CN1669672A/en active Pending
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11364042B2 (en) | 2005-09-22 | 2022-06-21 | The Regents Of The University Of Michigan | Histotripsy for thrombolysis |
| US11701134B2 (en) | 2005-09-22 | 2023-07-18 | The Regents Of The University Of Michigan | Histotripsy for thrombolysis |
| WO2008011759A1 (en) * | 2006-07-21 | 2008-01-31 | Beijing Yuande Bio-Medical Engineering Co., Ltd. | An ultrasound phase-control focusing transducer based on spherical lens |
| CN101947696A (en) * | 2010-09-26 | 2011-01-19 | 哈尔滨工业大学 | Welding device for compounding ultrasonic focusing sound field with molten pole arc welding |
| CN102319486A (en) * | 2011-06-21 | 2012-01-18 | 四川大学 | The shape memory of focus supersonic Synchronization Control shape memory drug-carrying polymer and the method for drug release |
| CN103997975B (en) * | 2011-12-22 | 2016-12-28 | 皇家飞利浦有限公司 | Use the incoherent of the ultrasonic pressure that multiple element of transducer generates and calculate ultrasound intensity and estimate |
| CN103997975A (en) * | 2011-12-22 | 2014-08-20 | 皇家飞利浦有限公司 | Calculating the ultrasonic intensity estimate using an incoherent sum of the ultrasonic pressure generated by multiple transducer elements |
| JP2019146980A (en) * | 2012-04-30 | 2019-09-05 | ザ リージェンツ オブ ザ ユニヴァシティ オブ ミシガン | Ultrasound therapy system, methods of designing and manufacturing ultrasound system |
| CN104684658A (en) * | 2012-06-06 | 2015-06-03 | 国家科学研究中心 | Device and method for focusing pulses |
| CN105392529A (en) * | 2013-03-28 | 2016-03-09 | 华盛顿大学商业化中心 | Focused ultrasound apparatus and methods of use |
| US10350439B2 (en) | 2013-03-28 | 2019-07-16 | University Of Washington Through Its Center For Commercialization | Focused ultrasound apparatus and methods of use |
| CN105392529B (en) * | 2013-03-28 | 2020-03-17 | 华盛顿大学商业化中心 | Focused ultrasound device and method of use |
| US11432900B2 (en) | 2013-07-03 | 2022-09-06 | Histosonics, Inc. | Articulating arm limiter for cavitational ultrasound therapy system |
| US10780298B2 (en) | 2013-08-22 | 2020-09-22 | The Regents Of The University Of Michigan | Histotripsy using very short monopolar ultrasound pulses |
| US11819712B2 (en) | 2013-08-22 | 2023-11-21 | The Regents Of The University Of Michigan | Histotripsy using very short ultrasound pulses |
| US11135454B2 (en) | 2015-06-24 | 2021-10-05 | The Regents Of The University Of Michigan | Histotripsy therapy systems and methods for the treatment of brain tissue |
| US11813484B2 (en) | 2018-11-28 | 2023-11-14 | Histosonics, Inc. | Histotripsy systems and methods |
| US11980778B2 (en) | 2018-11-28 | 2024-05-14 | Histosonics, Inc. | Histotripsy systems and methods |
| US11648424B2 (en) | 2018-11-28 | 2023-05-16 | Histosonics Inc. | Histotripsy systems and methods |
| US11813485B2 (en) | 2020-01-28 | 2023-11-14 | The Regents Of The University Of Michigan | Systems and methods for histotripsy immunosensitization |
| CN112504926B (en) * | 2020-11-25 | 2023-02-03 | 长江水利委员会长江科学院 | Ultrasonic suspended load measurement system and method based on multi-frequency backscattering principle |
| CN112504926A (en) * | 2020-11-25 | 2021-03-16 | 长江水利委员会长江科学院 | Ultrasonic suspended load measurement system and method based on multi-frequency backscattering principle |
| CN112894116B (en) * | 2020-12-28 | 2023-02-17 | 上海骄成超声波技术股份有限公司 | Ultrasonic welding head and ultrasonic welding device |
| CN112894116A (en) * | 2020-12-28 | 2021-06-04 | 上海骄成机电设备有限公司 | Ultrasonic welding head and ultrasonic welding device |
| CN113058834B (en) * | 2021-03-23 | 2022-03-29 | 苏州希声科技有限公司 | Double-frequency focusing transducer for biological sample pretreatment and driving method thereof |
| CN113058834A (en) * | 2021-03-23 | 2021-07-02 | 苏州希声科技有限公司 | Double-frequency focusing transducer for biological sample pretreatment and driving method thereof |
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