CN113633899B - Continuous zooming low-intensity focusing ultrasonic transducer - Google Patents
Continuous zooming low-intensity focusing ultrasonic transducer Download PDFInfo
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- CN113633899B CN113633899B CN202110890055.4A CN202110890055A CN113633899B CN 113633899 B CN113633899 B CN 113633899B CN 202110890055 A CN202110890055 A CN 202110890055A CN 113633899 B CN113633899 B CN 113633899B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N7/00—Ultrasound therapy
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Abstract
The application provides a continuous zooming low-intensity focusing ultrasonic transducer, which comprises the following components: a servo drive assembly for providing a precision driving force; the reduction gear box assembly is used for improving torque and speed of the servo motor, reducing the speed and driving the screw rod to rotate, and changing the transmission direction; the screw rod pitch-changing assembly is used for realizing the up-and-down movement of the driving permanent magnet; and the ultrasonic generating and conducting component is used for realizing the generation and ultrasonic conduction of the focused ultrasonic. The device uses the servo motor as a driving force permanent magnet as a driven structure, can realize mechanical zooming, and has the advantages of simple structure, determinable focal depth and strong focusing energy.
Description
Technical Field
The application particularly relates to a continuous zooming low-intensity focusing ultrasonic transducer.
Background
Currently, ultrasonic focusing is mainly classified into electronic focusing, acoustic focusing, and spherical crown physical focusing. Most focusing ultrasonic transducers are spherical crowns, are most traditional and simplest in ultrasonic focusing, and are the most widely used focusing modes in practical use at present, the focusing ultrasonic transducers can only focus at a single point, the focusing depth cannot be accurately changed, and when a target point is required to be accurately stimulated, the focus position can only be changed by pressing the position of the transducer, so that discomfort of a person to be treated can be caused, and the treatment effect is affected. In the mode, different delays are introduced into each unit of the array and then the units are synthesized into a focused beam so as to realize imaging of each point of the sound field; the defects are that: complex electronic circuit control is required. The acoustic focusing is focusing through an acoustic lens, and the acoustic reflector focuses or directly emits a focused sound beam by using a curved transducer; the disadvantage is that once the transducer is made, the focal length is not easily changed, which is of great significance for ultrasound imaging or therapy.
Disclosure of Invention
The present application aims to solve the above-mentioned problems by providing a continuous-zoom low-intensity focused ultrasound transducer, which solves the problems described above.
In order to meet the requirements, the application adopts the following technical scheme: there is provided a continuous-zoom low-intensity focused ultrasound transducer comprising: a servo drive assembly for providing a precision driving force; the reduction gear box assembly is used for improving torque and speed of the servo motor, reducing the speed and driving the screw rod to rotate, and changing the transmission direction; the screw rod pitch-changing assembly is used for realizing the up-and-down movement of the driving permanent magnet; and the ultrasonic generating and conducting component is used for realizing the generation and ultrasonic conduction of the focused ultrasonic.
The continuous zooming low-intensity focusing ultrasonic transducer has the following advantages:
the device uses the servo motor as a driving force permanent magnet as a driven structure, can realize mechanical zooming, and has the advantages of simple structure, determinable focal depth and strong focusing energy.
Drawings
The accompanying drawings, in which like reference numerals refer to identical or similar parts throughout the several views and which are included to provide a further understanding of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application and not to limit the application unduly. In the drawings:
fig. 1 schematically shows a schematic structure of a continuous-zoom low-intensity focused ultrasound transducer according to an embodiment of the application.
Fig. 2 schematically illustrates a structural diagram of a continuous-zoom low-intensity focused ultrasound transducer according to one embodiment of the application.
Wherein: 1. ultrasonic generation and transmission to the assembly; 2. a reduction gearbox assembly; 3. a servo drive assembly; 4. a screw rod pitch-changing assembly; 5. a silica gel sound-transmitting membrane; 6. a container; 7. a driven permanent magnet; 8. an inner plastic ring; 9. an ultrasound wafer; 10. an upper case of the gear case; 11. an output gear; 12. single-layer spur gears; 13. a double-layer reduction gear; 14. a gear box lower shell; 15. a servo motor; 16. a drive gear; 17. a lower photoelectric limit switch; 18. an active permanent magnet; 19. an outer plastic retaining ring; 20. a slide block; 21. a screw rod; 22. an optical axis; 23. a photoelectric limit switch is arranged; 24. and the end cover is fixed at the lower part.
Detailed Description
The present application will be described in further detail with reference to the drawings and the embodiments, in order to make the objects, technical solutions and advantages of the present application more apparent.
In the following description, references to "one embodiment," "an embodiment," "one example," "an example," etc., indicate that the embodiment or example so described may include a particular feature, structure, characteristic, property, element, or limitation, but every embodiment or example does not necessarily include the particular feature, structure, characteristic, property, element, or limitation. In addition, repeated use of the phrase "according to an embodiment of the application" does not necessarily refer to the same embodiment, although it may.
Certain features have been left out of the following description for simplicity, which are well known to those skilled in the art.
According to one embodiment of the present application, there is provided a continuous-zoom low-intensity focused ultrasound transducer, as shown in fig. 1-2, comprising:
a servo drive assembly 3 for providing a precise driving force;
the reduction gear box assembly 2 is used for improving the torque and the speed of the servo motor, reducing the speed and driving the screw rod to rotate and changing the transmission direction;
the screw rod pitch-changing assembly 4 is used for realizing the up-and-down movement of the active permanent magnet;
an ultrasonic generating and conducting assembly 1 is used for realizing the generation and the ultrasonic conduction of focused ultrasonic.
According to one embodiment of the application, the servo drive assembly 3 of the continuous-zoom low-intensity focused ultrasound transducer comprises a servo motor 15 and a drive gear 16 arranged on top of said servo motor 15.
According to one embodiment of the application, the ultrasonic generating and conducting assembly 1 of the continuous variable-focus low-intensity focused ultrasonic transducer comprises a container 6, wherein a driven permanent magnet 7, an inner plastic ring 8 and an ultrasonic wafer 9 are arranged inside the container 6, sound guide liquid is carried inside the container 6, and a sound absorption block is arranged at the bottom of the container 6.
According to one embodiment of the application, the reduction gearbox assembly 2 of the continuous-zoom low-intensity focused ultrasound transducer comprises a gearbox upper shell 10 and a gearbox lower shell 14 which are arranged at the bottom of the container 6, wherein a double-layer reduction gear 13 meshed with the driving gear 16 is arranged between the gearbox upper shell 10 and the gearbox lower shell 14, the double-layer reduction gear 13 is meshed with a single-layer straight gear 12, and the single-layer straight gear 12 is meshed with an output gear 11.
According to one embodiment of the application, the screw rod pitch-changing assembly 4 of the continuous zooming low-intensity focusing ultrasonic transducer comprises a lower fixed end cover 24 arranged at the top of the side end surface of the container 6, an upper photoelectric limit switch 23, an optical axis 22 and a screw rod 21 which are vertically arranged are connected to the bottom of the lower fixed end cover 24, a sliding block 20 sliding along the screw rod 21 is arranged on the screw rod 21, and the sliding block 20 is connected with an active permanent magnet 18 which is tightly attached to the container 6.
According to one embodiment of the application, the top edge of the upper gear box casing 10 of the continuous-zoom low-intensity focused ultrasound transducer is provided with a lower photoelectric limit switch 17.
According to one embodiment of the application, the exterior of the container 6 of the continuous-zoom low-intensity focused ultrasound transducer is provided with an outer plastic retaining ring 19.
According to one embodiment of the application, the top of the container 6 of the continuous-zoom low-intensity focused ultrasound transducer is provided with an arc-shaped silica gel sound-transmitting membrane 5.
According to one embodiment of the application, the reduction gearbox assembly 2 of the continuous variable focus low intensity ultrasonic transducer is arranged at the bottom of the ultrasonic generating and transmitting assembly 1, the servo driving assembly 3 is arranged at the bottom of the reduction gearbox assembly 2, and the screw rod pitch changing assembly 4 is arranged on the outer side end face of the ultrasonic generating and transmitting assembly 1.
According to one embodiment of the application, the reduction gear box assembly of each component of the continuous zooming low-intensity focusing ultrasonic transducer is used for improving the torque of a servo motor, reducing the speed and driving a screw rod to rotate, changing the transmission direction, one servo motor can drive the symmetrically placed screw rod to rotate simultaneously, and different reduction ratios and torques can be provided by changing the gear ratio of a main gear and a driven gear.
According to one embodiment of the application, the lead screw pitch-changing assembly of each component of the continuous zooming low-intensity focusing ultrasonic transducer realizes the up-and-down movement of the driving permanent magnet, two groups of lead screws are symmetrically arranged at 180 degrees, the head parts of the lead screws are inserted into the holes of the transmission gears and are connected through inserting holes, the limiting optical axis is fixed on one side of the lead screws, the sliding blocks are connected on the lead screws through threads and move along with the rotation of the lead screws, four tile-shaped driving permanent magnets are respectively fixed at four parts of the outer plastic fixing ring, two sliding blocks are respectively fixed with the two driving permanent magnets, the lead screws are symmetrically arranged at 180 degrees, the up-and-down movement of the driving permanent magnets can be realized through the rotation of the lead screws, and then the driven permanent magnets are driven to move up and down through magnetic force.
According to one embodiment of the application, the ultrasonic generating and conducting assembly of each component of the continuous zooming low-intensity focusing ultrasonic transducer realizes the generation and ultrasonic conduction of focusing ultrasonic, the focusing ultrasonic wafer is of a geometric spherical crown focusing structure, the edge of the focusing ultrasonic wafer is fixed with an inner plastic ring for simultaneously fixing the focusing wafer and the driven permanent magnets, the two driven permanent magnets are symmetrically arranged at 180 degrees, and four driven permanent magnets are fixed at the four equal parts of the inner plastic ring.
According to one embodiment of the application, the top of the container of each component of the continuous-zoom low-intensity focused ultrasonic transducer is stuck with a sound absorption block: the sound absorption block is made of polyurethane, the container is made of glass or plastic, and the wall thickness is smaller than 2mm. So as to realize the stable matching of magnetic force, the lower end is a silica gel sound-transmitting film, the upper end is sealed, the container is filled with sound guide liquid, and the sound guide liquid is perfluorinated electronic cooling liquid.
According to one embodiment of the application, the sound guiding liquid of each component of the continuous zooming low-intensity focusing ultrasonic transducer has the characteristics of no corrosion, no toxicity, no dissolution of swelling silicon rubber, high resistivity, high sound conductivity, low viscosity and the like, and the servo motor does not generate low-frequency vibration phenomenon at low speed, so that the torque output is constant, and accurate positioning is realized.
The foregoing examples are merely representative of several embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the application, which are within the scope of the application. The scope of the application should therefore be pointed out with reference to the appended claims.
Claims (2)
1. A continuous-zoom low-intensity focused ultrasound transducer, comprising: a servo drive assembly for providing a precision driving force; the reduction gear box assembly is used for improving torque and speed of the servo motor, reducing the speed and driving the screw rod to rotate, and changing the transmission direction; the screw rod pitch-changing assembly is used for realizing the up-and-down movement of the driving permanent magnet; the ultrasonic generating and conducting assembly is used for realizing the generation and ultrasonic conduction of focused ultrasonic waves;
the servo driving assembly comprises a servo motor and a driving gear arranged at the top of the servo motor;
the ultrasonic generating and conducting assembly comprises a container, wherein a driven permanent magnet, an inner plastic ring and an ultrasonic wafer are arranged in the container, sound guide liquid is supported in the container, and a sound absorption block is arranged at the bottom of the container;
the reduction gear box assembly comprises a gear box upper shell and a gear box lower shell which are arranged at the bottom of the container, a double-layer reduction gear meshed with the driving gear is arranged between the gear box upper shell and the gear box lower shell, the double-layer reduction gear is meshed with a single-layer straight gear, and the single-layer straight gear is meshed with the output gear;
the screw rod pitch-changing assembly comprises a lower fixed end cover arranged at the top of the side end surface of the container, an upper photoelectric limit switch, an optical axis and a screw rod are connected to the bottom of the lower fixed end cover, the optical axis and the screw rod are vertically arranged, a sliding block sliding along the screw rod is arranged on the screw rod, and the sliding block is connected with an active permanent magnet clung to the container;
a lower photoelectric limit switch is arranged at the top edge of the upper shell of the gear box; an outer plastic fixing ring is arranged outside the container; the top of the container is provided with an arc silica gel sound-transmitting film; the screw rod pitch-changing assembly realizes the up-and-down movement of the driving permanent magnet, photoelectric limit switches are arranged at two ends of the screw rod pitch-changing assembly, two groups of screw rods are symmetrically placed at 180 degrees, the head parts of the screw rods are inserted into the output gear holes, the insertion holes are connected, a limiting optical axis is fixed on one side of the screw rods, sliding blocks are connected to the screw rods through threads and move along with the rotation of the screw rods, four tile-shaped driving permanent magnets are respectively fixed at four parts of an outer plastic fixing ring, two sliding blocks are respectively fixed with the two driving permanent magnets, the two sliding blocks are symmetrically placed at 180 degrees, the screw rods rotate to realize the up-and-down movement of the driving permanent magnets, and then the driven permanent magnets are driven to move up-and-down through magnetic force;
the ultrasonic generating and conducting assembly of each component of the continuous zooming low-intensity focusing ultrasonic transducer realizes the generation and ultrasonic conduction of focusing ultrasonic, the focusing ultrasonic wafer is of a geometric spherical crown focusing structure, the edge of the focusing ultrasonic wafer is fixed with an inner plastic ring which is used for simultaneously fixing the focusing ultrasonic wafer and driven permanent magnets, the two driven permanent magnets are symmetrically placed at 180 degrees, and four driven permanent magnets are fixed at the four equal parts of the inner plastic ring.
2. The continuous-zoom low-intensity focused ultrasound transducer of claim 1, wherein: the reduction gear box assembly is arranged at the bottom of the ultrasonic generation and conduction assembly, the servo driving assembly is arranged at the bottom of the reduction gear box assembly, and the screw rod pitch-changing assembly is arranged on the outer side end face of the ultrasonic generation and conduction assembly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110890055.4A CN113633899B (en) | 2021-08-04 | 2021-08-04 | Continuous zooming low-intensity focusing ultrasonic transducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110890055.4A CN113633899B (en) | 2021-08-04 | 2021-08-04 | Continuous zooming low-intensity focusing ultrasonic transducer |
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| CN113633899A CN113633899A (en) | 2021-11-12 |
| CN113633899B true CN113633899B (en) | 2023-12-08 |
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| CN202110890055.4A Active CN113633899B (en) | 2021-08-04 | 2021-08-04 | Continuous zooming low-intensity focusing ultrasonic transducer |
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| CN101300730A (en) * | 2005-10-28 | 2008-11-05 | 新阶科技股份有限公司 | Mechanism comprised of ultrasonic lead screw motor |
| CN101484084A (en) * | 2006-04-11 | 2009-07-15 | 皇家飞利浦电子股份有限公司 | A device for positioning an ultrasound transducer inside a MR scanner |
| CN102818774A (en) * | 2012-08-16 | 2012-12-12 | 山东省科学院激光研究所 | Laser-electromagnetic ultrasonic nondestructive testing system |
| KR101335476B1 (en) * | 2013-02-25 | 2013-12-11 | 주식회사 코러스트 | Line-focus type ultrasound transducer and high intensity focused ultrasound generating apparatus including the same |
| CN106461906A (en) * | 2014-05-30 | 2017-02-22 | 博立多媒体控股有限公司 | Zoom lens |
| CN107690341A (en) * | 2015-08-13 | 2018-02-13 | 金裕仁 | High-intensity focusing ultrasonic wave device |
| CN209392084U (en) * | 2018-08-20 | 2019-09-17 | 安徽声达愈医疗器械有限公司 | Focused ultrasound therapy device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140066819A1 (en) * | 2012-04-13 | 2014-03-06 | Bruker Biospin Corporation | Luminescence-guided focused ultrasound apparatus and method |
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2021
- 2021-08-04 CN CN202110890055.4A patent/CN113633899B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101300730A (en) * | 2005-10-28 | 2008-11-05 | 新阶科技股份有限公司 | Mechanism comprised of ultrasonic lead screw motor |
| WO2007071543A1 (en) * | 2005-12-23 | 2007-06-28 | Genesis Elettronica S.R.L. | An operating head for medical apparatus |
| CN101484084A (en) * | 2006-04-11 | 2009-07-15 | 皇家飞利浦电子股份有限公司 | A device for positioning an ultrasound transducer inside a MR scanner |
| CN102818774A (en) * | 2012-08-16 | 2012-12-12 | 山东省科学院激光研究所 | Laser-electromagnetic ultrasonic nondestructive testing system |
| KR101335476B1 (en) * | 2013-02-25 | 2013-12-11 | 주식회사 코러스트 | Line-focus type ultrasound transducer and high intensity focused ultrasound generating apparatus including the same |
| CN106461906A (en) * | 2014-05-30 | 2017-02-22 | 博立多媒体控股有限公司 | Zoom lens |
| CN107690341A (en) * | 2015-08-13 | 2018-02-13 | 金裕仁 | High-intensity focusing ultrasonic wave device |
| CN209392084U (en) * | 2018-08-20 | 2019-09-17 | 安徽声达愈医疗器械有限公司 | Focused ultrasound therapy device |
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| CN113633899A (en) | 2021-11-12 |
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