Ultrasonic transducer sound field detection device

Abstract

The utility model belongs to the technical field of ultrasonic detection, and discloses a sound field detection device for an ultrasonic transducer. The ultrasonic transducer sound field detection device comprises a mounting rack, sound field measurement equipment and an ultrasonic transducer. The sound field measurement equipment comprises a hydrophone and a liquid container, and the hydrophone is arranged in the liquid container. The sound field measuring equipment and the ultrasonic transducer are arranged on the mounting frame at intervals in the axial direction, and the ultrasonic transducer can move in the axial direction. According to the ultrasonic transducer sound field detection device, the mounting rack is arranged, and the sound field detection assembly and the ultrasonic transducer are detachably arranged on the mounting rack, so that the ultrasonic transducer sound field detection device is convenient to disassemble, assemble and move and is suitable for more application scenes; meanwhile, the sound field detection assembly and the ultrasonic transducer are arranged on the same axis in a spaced mode, the distance between the sound field detection assembly and the ultrasonic transducer can be changed by moving the ultrasonic transducer, then the hydrophone can detect axial sound field distribution of the ultrasonic transducer, and the hydrophone in the device can conveniently, rapidly and flexibly detect the axial sound field of the ultrasonic transducer.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic detection, in particular to an ultrasonic transducer sound field detection device. Background Art

[0002] Magnetic resonance-guided high-intensity focused ultrasound (MRI-guided HIFU) technology integrates the advantages of MRI and HIFU to provide a non-invasive, environmentally friendly, and reusable treatment solution. This technology offers clinicians significant therapeutic potential during treatment, while also demonstrating excellent performance in improving treatment outcomes, shortening patient recovery periods, and reducing treatment-related side effects. Therefore, it has a significant positive impact on the development of MRI-guided HIFU devices. During the development of MRI-guided HIFU devices, the axial acoustic field of the ultrasound transducer must be frequently measured.

[0003] In the prior art, a large three-degree-of-freedom manipulator is usually used in conjunction with a hydrophone to measure the sound field of an ultrasonic transducer. However, the measurement of the axial sound field only requires movement in one degree of freedom direction. Therefore, the measurement scheme of the prior art causes a waste of resources. Moreover, the three-degree-of-freedom manipulator is time-consuming and labor-intensive to control the position of the ultrasonic transducer and cannot perform transducer detection quickly. In addition, the three-degree-of-freedom manipulator occupies a large space, and the overall structure is difficult to move and is not portable enough, making it difficult to detect in environments where space is limited or movement is inconvenient. Utility Model Content

[0004] The purpose of the utility model is to provide an ultrasonic transducer sound field detection device to conveniently and quickly detect the axial sound field distribution of the ultrasonic transducer, and at the same time make the ultrasonic transducer sound field detection device suitable for more application scenarios.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] An ultrasonic transducer sound field detection device, comprising:

[0007] A mounting frame, wherein a first mounting position and a second mounting position are provided on the mounting frame at intervals along the axial direction;

[0008] The first installation position is used to install a sound field measurement device, the sound field measurement device includes a hydrophone and a container assembly, the container assembly is arranged at the first installation position, and the hydrophone is arranged in the container assembly;

[0009] The second mounting position is used to mount an ultrasonic transducer, and the ultrasonic transducer is movable axially in the second mounting position.

[0010] Preferably, the sound field detection device further includes a linear drive mechanism. One end of the ultrasonic transducer is movably arranged at the second installation position, and the other end is connected to the linear drive mechanism, which can drive the ultrasonic transducer to move axially in the second installation position.

[0011] Preferably, the second installation position includes a mounting hole, and adjustable fasteners are arranged circumferentially on the mounting hole. Adjusting the adjustable fasteners can fix or release the ultrasonic transducer to / from the mounting hole.

[0012] Preferably, the linear drive mechanism includes a handheld end, a connecting rod, and a fixed end. One end of the connecting rod extends out of the mounting frame and is connected to the handheld end, and the other end of the connecting rod is connected to the fixed end, which is connected to the ultrasonic transducer.

[0013] Preferably, the container assembly includes a container and a container outer sleeve. The container is detachably arranged inside the container outer sleeve, and the container outer sleeve is detachably connected to the first installation position.

[0014] Preferably, the first installation position includes a bearing platform. The container outer sleeve is arranged on the bearing platform, and a clamping frame is arranged circumferentially on the bearing platform. A clamping part is arranged at the bottom of the container outer sleeve, and the clamping part is clamped with the clamping frame.

[0015] Preferably, the sound field measurement device further includes a hydrophone bracket. The circumference of the hydrophone bracket is connected to the container assembly, and a fixing hole is arranged at the center of the hydrophone bracket. The hydrophone is arranged in the fixing hole.

[0016] Preferably, a bottom plate is arranged at one end of the mounting frame away from the first installation position. The bottom plate is provided with an avoidance hole. The second installation position is arranged between the first installation position and the avoidance hole. One end of the ultrasonic transducer is arranged at the second installation position, and the other end passes through the avoidance hole and is connected to the linear drive mechanism.

[0017] Preferably, a fixing position is further arranged at one end of the bottom plate away from the avoidance hole.

[0018] Preferably, the hydrophone, the ultrasonic transducer, and the mounting frame are all non-magnetic parts.

[0019] The beneficial effects of the present utility model:

[0020] The ultrasonic transducer sound field detection device provided by the utility model is characterized in that by arranging a mounting frame, both the sound field measuring device and the ultrasonic transducer assembly are detachably arranged on the mounting frame, which is convenient for quick disassembly, assembly and movement, and is applicable to more application scenarios. At the same time, the sound field measuring device and the ultrasonic transducer are arranged at an axial interval, and moving the ultrasonic transducer can change the distance between the two, so that the hydrophone in the sound field measuring device can detect the axial sound field distribution of the ultrasonic transducer, and the hydrophone in this device can conveniently and quickly realize the flexible detection of the axial sound field of the ultrasonic transducer. Brief Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the ultrasonic transducer sound field detection device provided by the utility model;

[0022] Figure 2 is a side view of the ultrasonic transducer sound field detection device provided by the utility model;

[0023] Figure 3 is a sectional view of the ultrasonic transducer sound field detection device provided by the utility model;

[0024] Figure 4 is a schematic diagram of the sound field detection component of the ultrasonic transducer sound field detection device provided by the utility model;

[0025] Figure 5 is a schematic structural diagram of the mounting frame, ultrasonic transducer and linear driving mechanism of the ultrasonic transducer sound field detection device provided by the utility model.

[0026] In the figure:

[0027] 11 - Container; 12 - Container outer sleeve; 121 - Clamping part;

[0028] 2 - Hydrophone;

[0029] 3 - Hydrophone support;

[0030] 4 - Mounting frame; 41 - First mounting position; 411 - Bearing hole; 412 - Clamping frame; 413 - Outer ring of bearing platform; 42 - Second mounting position; 421 - Adjustable fastener; 422 - Cross frame; 43 - Bottom plate; 431 - Avoidance hole; 44 - Support column;

[0031] 5 - Ultrasonic transducer;

[0032] 61 - Handheld end; 62 - Fixed end; 63 - Connecting rod. Detailed Description of the Preferred Embodiments

[0033] The following further describes the present utility model in detail with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting the present utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0034] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0036] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0037] Such as Figures 1 - 5As shown in the figure, this embodiment provides an ultrasonic transducer sound field detection device, which includes a mounting frame 4, a sound field measurement device, and an ultrasonic transducer 5. The first mounting position 41 and the second mounting position 42 are arranged at intervals along the axis on the mounting frame 4. The sound field measurement device includes a hydrophone 2 and a container assembly. The first mounting position 41 is used to mount the sound field measurement device, and the hydrophone 2 is arranged in the container assembly. The second mounting position 42 is used to mount the ultrasonic transducer 5, and the ultrasonic transducer 5 can move axially in the second mounting position 42. Specifically, the ultrasonic transducer 5 can convert electromagnetic energy into mechanical energy and generate ultrasonic waves through mechanical vibration; a liquid is filled in the liquid container, the hydrophone 2 is arranged in the liquid, and the hydrophone 2 can detect the ultrasonic wave signal focused in the liquid when the ultrasonic transducer 5 generates ultrasonic waves. At the same time, since the first mounting position 41 and the second mounting position 42 are arranged coaxially at intervals, the sound field measurement device is arranged in the first mounting position 41, and the ultrasonic transducer 5 is arranged in the second mounting position 42, so that the sound field measurement device and the ultrasonic transducer 5 are arranged coaxially at intervals. Further, the hydrophone 2 and the ultrasonic transducer 5 are arranged coaxially at intervals. When the ultrasonic transducer 5 moves along the axis direction, the distance between the ultrasonic transducer 5 and the hydrophone 2 changes, and the hydrophone 2 can detect the axial sound field distribution generated by the ultrasonic transducer 5, which is more convenient and faster compared with the prior art. Furthermore, both the sound field detection component and the ultrasonic transducer 5 are detachably mounted on the mounting frame 4, which is convenient for the rapid disassembly and assembly of the ultrasonic transducer sound field detection device, and convenient for the overall installation and movement of the device to adapt to more application scenarios. Furthermore, the ultrasonic transducer 5 in this embodiment is a single-element transducer, which only includes a single element and can emit a beam of focused or unfocused ultrasonic waves.

[0038] As Figure 2 and Figure 3 shown in the figure, in this embodiment, the sound field detection device further includes a linear drive mechanism. One end of the ultrasonic transducer 5 is movably arranged in the second mounting position 42, and the other end is connected to the linear drive mechanism. The linear drive mechanism can drive the ultrasonic transducer 5 to move axially in the second mounting position 42. Specifically, when the linear drive mechanism linearly drives the ultrasonic transducer 5, the second mounting position 42 can limit the degree of freedom of the ultrasonic transducer 5 in the direction perpendicular to the axis, but does not limit the degree of freedom of the ultrasonic transducer 5 in the axial direction. Then, the position of the ultrasonic transducer 5 in the axial direction is controlled by the linear drive mechanism, achieving the technical effect of enabling the hydrophone 2 to detect the axial sound field distribution generated by the ultrasonic transducer 5.

[0039] As Figure 5As shown in the figure, in this embodiment, the second mounting position 42 includes a mounting hole, and an adjustable fastener 421 is arranged circumferentially on the mounting hole. By adjusting the adjustable fastener 421, the ultrasonic transducer 5 can be fixed or unfixed to / from the mounting hole. Specifically, the inner diameter of the mounting hole is slightly larger than the outer diameter of the ultrasonic transducer 5 to facilitate the installation of the ultrasonic transducer 5. When it is not necessary to use the linear drive mechanism to control the position of the ultrasonic transducer 5 in the axial direction, the adjustable fastener 421 is in a tightened state, fixing the ultrasonic transducer 5 in the mounting hole to prevent changes in the axial sound field caused by the movement of the ultrasonic transducer 5. When it is necessary to use the linear drive mechanism to control the position of the ultrasonic transducer 5 in the axial direction, the adjustable fastener 421 is in a relaxed state, and the ultrasonic transducer 5 can move in the axial direction within the mounting hole. Further, the adjustable fastener 421 is a threaded fastener, and corresponding threaded holes are arranged circumferentially on the mounting hole. After the ultrasonic transducer 5 is arranged in the mounting hole, rotating the threaded fastener can make the threaded fastener abut against or move away from the ultrasonic transducer 5 to achieve the technical effect of fixing or unfixing the ultrasonic transducer 5 to / from the mounting hole. In other embodiments, the adjustable fastener can also be a clamp fixed at one end of the mounting hole. Clamping the clamp can fix the ultrasonic transducer 5 in the mounting hole, and loosening the clamp can unfix the ultrasonic transducer 5.

[0040] As Figure 2 , Figure 3 and Figure 5 shown in the figure, in this embodiment, the linear drive mechanism includes a handheld end 61, a connecting rod 63, and a fixed end 62. One end of the connecting rod 63 extends out of the mounting frame 4 and is connected to the handheld end 61, and the other end of the connecting rod 63 is connected to the fixed end 62, and the fixed end 62 is connected to the ultrasonic transducer 5. Specifically, in this embodiment, the fixed end 62 is a sleeve sleeved on one end of the ultrasonic transducer 5. The sleeve can be fixed to the ultrasonic transducer 5 through a threaded connector or by an interference fit, and no further limitation is made here. Further, the handheld end 61 is a grip. By using the grip, the ultrasonic transducer 5 connected to the fixed end 62 can be driven to move axially through the connecting rod 63. In some other embodiments, the linear drive mechanism can be a screw drive mechanism, a gear drive mechanism, a crank connecting rod, or other linear drive mechanisms arranged at one end of the ultrasonic transducer 5.

[0041] As Figure 4As shown in the figure, in this embodiment, the container assembly includes a container 11 and a container outer sleeve 12. The container 11 is detachably fixed inside the container outer sleeve 12, and the container outer sleeve 12 is detachably connected to the first installation position 41. Specifically, the container 11 and the container outer sleeve 12 are similar in shape, and the container outer sleeve 12 is slightly larger than the container 11. The container 11 can be detachably fixed inside the container outer sleeve 12 by means of snap connection, screw connection, etc. Further, both of them are cup-shaped structures with open upper ends. When they are fixed, there is a gap between the side wall of the container 11 and the side wall of the container outer sleeve 12, and the bottom of the container 11 abuts against the bottom of the container outer sleeve 12. The arrangement of the container 11 and the container outer sleeve 12 makes the liquid in the container 11 not easily affected by the external environment, especially reducing the interference of external mechanical vibration on the liquid in the container 11.

[0042] As Figure 5 shown, in this embodiment, the first installation position 41 includes a bearing platform. The container outer sleeve 12 is placed on the bearing platform. A snap connection frame 412 is circumferentially arranged on the bearing platform. A snap connection part 121 is arranged at the bottom of the container outer sleeve 12, and the snap connection part 121 is snap-connected to the snap connection frame 412. Specifically, the bearing platform includes a bearing hole 411 and a bearing outer ring 413. The snap connection frame is arranged between the bearing hole and the bearing outer ring. The bearing hole 411, the bearing outer ring and the bottom of the container outer sleeve 12 are the same in shape, all being circular. And the area enclosed by the bearing hole 411 is slightly smaller than the area of the bottom of the container outer sleeve 12. When the container outer sleeve 12 is arranged on the bearing hole 411, the bottom of the container outer sleeve 12 extends out of the bearing hole 411; at the same time, the snap connection part 121 at the bottom of the container outer sleeve 12 extends downward out of the bottom of the container outer sleeve 12 and is snap-connected to the snap connection frame 412. Further, the snap connection frame 412 includes four snap connection blocks evenly spaced along the circumference of the bearing platform. Four snap connection parts 121 are arranged at the corresponding positions at the bottom of the container outer sleeve 12. Each snap connection part 121 includes two spaced convex blocks, and a snap connection groove is formed between the two convex blocks. The snap connection block is snapped into the snap connection groove to fix the container outer sleeve 12 to the first installation position 41.

[0043] As Figure 4 shown, in this embodiment, the liquid container further includes a hydrophone support 3. The circumferential fixation of the hydrophone support 3 is connected to the container assembly, and a fixing hole is provided at the center of the hydrophone support 3. The hydrophone 2 is arranged in the fixing hole. Specifically, a screw 13 passes through the hydrophone support 3 and is screwed to the outer edge of the opening of the container 11 and the outer edge of the opening of the container outer sleeve to realize the fixation of the hydrophone support 3 to both the container 11 and the container outer sleeve 12 at the same time. Further, the hydrophone support 3 is symmetric about the center of the fixing hole. The hydrophone support 3 includes four evenly arranged abutting frames, and each abutting frame is provided with a perforation for the screw 13 to pass through.

[0044] As Figure 4 and Figure 5As shown in the figure, in this embodiment, a bottom plate 43 is provided at one end of the mounting bracket 4 away from the first mounting position 41. The bottom plate 43 is provided with an avoidance hole 431. The second mounting position 42 is provided between the first mounting position 41 and the avoidance hole 431. One end of the ultrasonic transducer 5 is provided at the second mounting position 42, and the other end passes through the avoidance hole 431 and is connected to the linear drive mechanism. Specifically, a plurality of support columns 44 connected to the bottom plate 43 are provided below the carrier table. The support columns 44 connect the carrier outer ring and the bottom plate. The avoidance hole 431 is located in the space formed by enclosing the plurality of support columns 44. Further, the second mounting position 42 further includes a plurality of cross frames 422. The plurality of cross frames 422 are spaced apart in the circumferential direction of the mounting hole, and the plurality of cross frames 422 and the plurality of support columns 44 are connected in one-to-one correspondence.

[0045] At the same time, a fixing position is further provided at one end of the bottom plate 43 away from the avoidance hole 431. Specifically, the fixing position is provided with a plurality of bottom plate fixing holes. Through these bottom plate fixing holes, other small devices can be installed on the bottom plate 43. At the same time, since the bottom plate 43 is an integral part of the mounting bracket 4, the bottom plate fixing holes can be used to fix the bottom plate 43 to the external environment and thus fix the entire mounting bracket 4. Since the overall volume of the mounting bracket 4 is small and it is a hollow structure except for the bottom plate 43, the overall weight of the mounting bracket 4 is reduced. Moreover, the sound field measurement device and the ultrasonic transducer 5 are both detachably arranged on the mounting bracket 4. Therefore, this device is easy to disassemble, move, maintain, and carry. When in use, only need to loosen the threaded fasteners in the circumferential direction of the mounting hole to release the fixing of the ultrasonic transducer from the mounting hole, and then use the handle to move the ultrasonic transducer 5 to complete the axial sound field detection. The operation is simple and can meet a variety of different experimental test environments.

[0046] In this embodiment, the hydrophone 2, the ultrasonic transducer 5, and the mounting bracket 4 are all non-magnetic parts. Specifically, the ultrasonic transducer 5 sound field detection device in this embodiment is designed for various application scenarios of high-intensity focused ultrasound technology. Therefore, this device needs to consider the requirements when working in a magnetic resonance environment. Therefore, the mounting bracket 4 can be made of non-magnetic materials such as acrylic plates, carbon fiber plates, and polyoxymethylene to reduce the influence on the magnetic field caused by electromagnetic effects. And optimize its structural design to make the structure of the mounting bracket 4 stable and not easy to deform, reducing the noise or interference generated by mechanical vibration. At the same time, such non-magnetic materials are lighter in weight, facilitating subsequent disassembly, installation, and carrying. Further, the strong magnetic field and radio frequency pulses in the magnetic resonance environment are likely to interfere with the internal circuits of electrical devices such as the hydrophone 2 and the ultrasonic transducer 5. Therefore, the hydrophone 2 and the ultrasonic transducer 5 can be made of non-magnetic materials such as titanium alloy, ceramic materials, and plastics to improve the stability in a strong magnetic field and radio frequency pulse environment and have magnetic resonance compatibility.

[0047] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. An ultrasonic transducer sound field detection device, characterized in that, Comprising: A mounting bracket (4), on which a first mounting position (41) and a second mounting position (42) are arranged at intervals along the axial direction; The first mounting position (41) is used for mounting a sound field measurement device, the sound field measurement device includes a hydrophone (2) and a container assembly, the container assembly is arranged at the first mounting position (41), and the hydrophone (2) is arranged in the container assembly; The second mounting position (42) is used for mounting an ultrasonic transducer (5), and the ultrasonic transducer (5) can move axially in the second mounting position (42).

2. The ultrasonic transducer sound field detection device according to claim 1, wherein It further includes a linear driving mechanism, one end of the ultrasonic transducer (5) is movably arranged in the second mounting position (42), and the other end is connected to the linear driving mechanism, and the linear driving mechanism can drive the ultrasonic transducer (5) to move axially in the second mounting position (42).

3. The ultrasonic transducer sound field detection device according to claim 2, characterized in that, The second mounting position (42) includes a mounting hole, and adjustable fasteners (421) are arranged circumferentially on the mounting hole. Adjusting the adjustable fasteners (421) can fix or release the ultrasonic transducer (5) in the mounting hole.

4. The ultrasonic transducer sound field detection device according to claim 3, characterized in that, The linear driving mechanism includes a handheld end (61), a connecting rod (63) and a fixed end (62). One end of the connecting rod (63) extends out of the mounting bracket (4) and is connected to the handheld end (61), and the other end of the connecting rod (63) is connected to the fixed end (62), and the fixed end (62) is connected to the ultrasonic transducer (5).

5. The ultrasonic transducer sound field detection device according to claim 1, wherein The container assembly includes a container (11) and a container outer sleeve (12), the container (11) is detachably arranged in the container outer sleeve (12), and the container outer sleeve (12) is detachably connected to the first mounting position (41).

6. The ultrasonic transducer sound field detection device according to claim 5, wherein The first mounting position (41) includes a bearing platform, the container outer sleeve (12) is arranged on the bearing platform, a clamping frame (412) is arranged circumferentially on the bearing platform, a clamping part (121) is arranged at the bottom of the container outer sleeve (12), and the clamping part (121) is clamped with the clamping frame (412).

7. The acoustic field detection device for an ultrasonic transducer according to claim 1, wherein The sound field measurement device further includes a hydrophone bracket (3), the circumference of the hydrophone bracket (3) is connected to the container assembly, a fixing hole is arranged at the center of the hydrophone bracket (3), and the hydrophone (2) is arranged in the fixing hole.

8. The ultrasonic transducer sound field detection device according to claim 2, characterized in that, One end of the mounting bracket (4) far from the first mounting position (41) is provided with a bottom plate (43), the bottom plate (43) is provided with an avoidance hole (431), the second mounting position (42) is arranged between the first mounting position (41) and the avoidance hole (431), one end of the ultrasonic transducer (5) is arranged in the second mounting position (42), and the other end passes through the avoidance hole (431) and is connected to the linear driving mechanism.

9. The ultrasonic transducer sound field detection device according to claim 8, characterized in that A fixing position is further arranged at one end of the bottom plate (43) far from the avoidance hole (431).

10. The ultrasonic transducer sound field detection device according to any one of claims 1-9, characterized in that, The hydrophone (2), the ultrasonic transducer (5) and the mounting bracket (4) are all non-magnetic parts.

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