Convenient hydrophone moving device for sound field measurement

Abstract

The utility model relates to a convenient hydrophone moving device for sound field measurement. Comprising a sound field measurement box body with an accommodating cavity for storing an ultrasonic medium, and an ultrasonic probe assembly for starting and receiving an ultrasonic signal, the hydrophone assembly is used for measuring sound field characteristics of the ultrasonic waves at different positions in the sound field measuring box body; and the mechanical moving mechanism is used for respectively driving the ultrasonic probe assembly and the hydrophone assembly to move in the sound field measuring box body in a three-axis manner. According to the utility model, the three-degree-of-freedom adjustment of the positions of the ultrasonic probe and the hydrophone is realized, the positions of the ultrasonic probe and the hydrophone probe are respectively controlled in a narrow magnetic resonance space and a strong magnetic field environment, the relative positions of the ultrasonic probe and the hydrophone probe are changed, and the measurement of ultrasonic sound fields at different positions is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of sound field measurement devices, and in particular relates to a convenient mobile hydrophone device for sound field measurement. Background Art

[0002] Magnetic resonance-guided phased high-intensity focused ultrasound (MRI-PHIFU) technology, by highly integrating the core advantages of magnetic resonance imaging (MRI) and phased high-intensity focused ultrasound (PHIFU), provides a non-invasive, environmentally friendly, and reusable advanced treatment solution. Phased technology enables rapid focal movement, enabling flexible and precise focusing. This technology has demonstrated significant therapeutic benefits and strong therapeutic potential in clinical applications, and its application areas are expanding at an astonishing rate. This technology not only demonstrates excellent performance in improving treatment outcomes, shortening patient recovery time, and significantly reducing treatment-related side effects, but also further accelerates its widespread application and promotion in the medical treatment field.

[0003] Unlike conventional ultrasound technology, the patient lies within the MRI device. The affected area, serving as the ultrasound target, must first be determined through MRI imaging, and then the ultrasound probe must be guided to the target point for treatment. Therefore, the position of the ultrasound probe and the target point are uncertain in MRI-PHIFU technology. Prior art discloses a portable HIFU sound field measurement device and method (publication number CN 111879401A), which can remotely control a hydrophone to measure the sound field of a HIFU transducer fixed to the system. However, during the development of MRI-PHIFU equipment, the ultrasound probe and hydrophone probe must be controlled separately to measure the sound field characteristics of the ultrasonic waves generated by the piezoelectric transducer as they propagate through the medium within the confined space and strong magnetic field of the magnetic resonance device. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a convenient mobile device for hydrophone for sound field measurement, which can move the ultrasonic probe and the hydrophone probe respectively in the narrow space of magnetic resonance and the strong magnetic field environment to measure the ultrasonic sound field at different positions.

[0005] The technical solution adopted by the utility model to solve its technical problems is: to provide a convenient mobile device for hydrophone for sound field measurement, comprising: a sound field measurement box, including a cavity for storing ultrasonic medium; an ultrasonic probe assembly, for emitting and receiving ultrasonic signals; a hydrophone assembly, for measuring the sound field characteristics of the ultrasonic wave at different positions in the sound field measurement box; and a mechanical moving mechanism, for respectively driving the ultrasonic probe assembly and the hydrophone assembly to move in three axes within the sound field measurement box.

[0006] Preferably, the ultrasonic probe assembly includes an ultrasonic probe bracket, one end of which is connected to the mechanical moving mechanism, and the other end is connected to the ultrasonic probe; the hydrophone assembly includes a hydrophone bracket, one end of which is connected to the mechanical moving mechanism, and the other end is connected to the hydrophone.

[0007] Preferably, the mechanical moving mechanism includes: a Y-axis moving mechanism, used to drive the ultrasonic probe assembly and the hydrophone assembly to move along the length direction of the cavity; a Z-axis moving mechanism, used to drive the Y-axis moving mechanism to move along the height direction of the cavity; and an X-axis moving mechanism, provided on one side of the cavity, used to drive the Z-axis moving mechanism to move along the width direction of the cavity.

[0008] Preferably, the X-axis moving mechanism includes: an X-axis guide rod, which is arranged on one side of the sound field measurement box along the length direction of the cavity; and a guide hole, which matches the X-axis guide rod and is opened on the Z-axis moving mechanism.

[0009] Preferably, the Z-axis moving mechanism includes: a base connected to the X-axis moving mechanism; a Y-axis guide rod for installing the Y-axis moving mechanism; and a Z-axis adjustment mechanism provided in the base for fixing the Y-axis guide rod at any position in the Z-axis direction.

[0010] Preferably, the Y-axis moving mechanism includes: a Y-axis guide rod arranged along the width direction of the cavity and connected to the Z-axis moving mechanism; a guide hole matched with the Y-axis guide rod and opened at one end of the ultrasonic probe assembly and the hydrophone assembly.

[0011] Preferably, a scale is provided on the surface of one or more of the X-axis moving mechanism, the Y-axis moving mechanism, and the Z-axis moving mechanism along its length direction.

[0012] Preferably, a limiting hole is provided on the side wall of the cavity, and the limiting hole cooperates with a limiting member to lock the movement of the X-axis moving mechanism in the longitudinal direction of the cavity.

[0013] Preferably, the Z-axis adjustment mechanism includes: a screw rod, which is rotatably arranged in the base along the height direction of the cavity; a Z-axis guide rod, which is provided in the base and arranged around the screw rod; a slider, which has a threaded hole matching the screw rod and a through hole matching the Z-axis guide rod; a knob, which is provided at the top of the screw rod and drives the screw rod to rotate; a bearing, which is provided in the bearing seat of the base, the inner ring of which matches the screw rod and the outer ring matches the bearing seat.

[0014] Preferably, the sound field measurement box includes handles, which are arranged outside two opposite side walls of the cavity.

[0015] The beneficial effects are as follows: The utility model has the function of adjusting the positions of the ultrasonic probe and the hydrophone with three degrees of freedom respectively, and controls the positions of the ultrasonic probe and the hydrophone probe respectively in the narrow space of magnetic resonance and the strong magnetic field environment, and changes their relative positions, so as to facilitate the measurement of ultrasonic sound fields at different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A stereoscopic diagram of a convenient mobile hydrophone device for sound field measurement.

[0017] Figure 2 A top view of a convenient mobile hydrophone device for sound field measurement.

[0018] Figure 3 for Figure 1 Stereoscopic view of the mid-sound field measurement box.

[0019] Figure 4 for Figure 1 Stereoscopic view of the middle lifting guide rail assembly.

[0020] Figure 5 for Figure 1 Stereoscopic view of the ultrasound probe assembly.

[0021] Figure 6 for Figure 1 A perspective view of the hydrophone assembly.

[0022] Among them, 100-sound field measurement box; 101-cavity; 102-handle; 103-X-axis guide rod; 104-limiting hole; 200-X-axis moving mechanism; 201-screw; 202-base; 203-slider; 204-Z-axis guide rod; 205-bearing; 206-scale; 207-Y-axis guide rod; 300-ultrasonic probe assembly; 301-ultrasonic probe; 302-ultrasonic probe bracket; 303-threaded hole one; 304-threaded hole two; 400-hydrophone assembly; 401-hydrophone; 402-hydrophone bracket; 403-threaded hole three.

[0023] The same reference numerals in the various drawings represent the same components. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that such equivalents also fall within the scope of the claims appended hereto.

[0025] like Figure 1 、 2As shown, the present invention provides a convenient mobile device for hydrophones for sound field measurement, comprising: a sound field measurement box 100, an ultrasonic probe assembly 300, a hydrophone assembly 400, and a mechanical moving mechanism. The sound field measurement box 100 includes a cavity 101 for storing ultrasonic media; the ultrasonic probe assembly 300 is used to generate and receive ultrasonic signals; the hydrophone assembly 400 is used to measure the sound field characteristics of the ultrasonic waves at different positions in the sound field measurement box 100; and the mechanical moving mechanism is used to respectively drive the ultrasonic probe assembly 300 and the hydrophone assembly 400 to move in three axes within the sound field measurement box 100. The ultrasonic probe assembly 300 includes an ultrasonic probe holder 302, one end of which is connected to the mechanical moving mechanism and the other end is connected to the ultrasonic probe 301; the hydrophone assembly 400 includes a hydrophone holder 402, one end of which is connected to the mechanical moving mechanism and the other end is connected to the hydrophone 401.

[0026] In the first embodiment, the mechanical movement mechanism includes a Y-axis movement mechanism, a Z-axis movement mechanism, and an X-axis movement mechanism 200, which are interconnected. The Y-axis movement mechanism is used to drive the ultrasonic probe assembly 300 and the hydrophone assembly 400 to move along the length of the cavity 101; the Z-axis movement mechanism is used to drive the Y-axis movement mechanism to move along the height of the cavity 101; and the X-axis movement mechanism 200 is located on one side of the cavity 101 and is used to drive the Z-axis movement mechanism to move along the width of the cavity 101. The cavity 101 is filled with water as the ultrasonic medium, and during use, the ultrasonic probe 301 and the hydrophone 401 are completely submerged in water.

[0027] like Figure 3 As shown, specifically, the X-axis moving mechanism 200 includes an X-axis guide rod 103 and a guide hole. There are four X-axis guide rods 103, which are parallel to each other and arranged on one side of the sound field measurement box 100 along the length direction of the cavity 101; the guide hole is matched with the X-axis guide rod 103 and is opened on the Z-axis moving mechanism.

[0028] like Figure 4 As shown, the Z-axis moving mechanism includes a base 202 and a Z-axis adjustment mechanism. The guide hole here is designed as a through hole and is opened on the back of the base 202. The base 202 can move along the length direction of the cavity 101 through the guide hole and the axial hole of the X-axis guide rod 103. This is the first degree of freedom; the Z-axis adjustment mechanism is arranged in an open groove set in the base 202.

[0029] The Z-axis adjustment mechanism includes a screw rod 201, a Z-axis guide rod 204, a slider 203, a knob and a bearing 205. The screw rod 201 is rotatably arranged in the base 202 along the height direction of the cavity 101; four Z-axis guide rods 204 surround the screw rod 201 and are arranged in the base 202 at the same distance from the screw rod 201; the slider 203 has a threaded hole matching the screw rod 201 and a through hole matching the Z-axis guide rod 204; the knob is provided on the top of the screw rod 201 and is coaxially fixedly connected to the screw rod 201. The operator can drive the screw rod 201 by rotating the knob. The screw rod 201 rotates. Since the threaded hole and the screw rod 201 are threaded screws, the Z-axis guide rod 204 prevents the slider 203 from rotating around the screw rod 201. By turning the knob, the slider 203 can move in the direction of the height of the cavity 101 in the base 202, which is the second degree of freedom. The opening groove of the base 202 is rectangular, and a bearing seat is provided on the top wall of the opening groove. The bearing 205 is arranged in the bearing seat. The inner ring of the bearing 205 matches the screw rod 201, and the outer ring matches the bearing seat, so that the screw rod 201 can rotate around the axis in the base 202.

[0030] The Y-axis movement mechanism includes a Y-axis guide rod 207 and a guide hole. The Y-axis guide rod 207 is arranged along the width direction of the cavity 101 and is fixed to the outer side of the slider 203. The guide hole here is designed as a slide groove. The lower part of the ultrasonic probe bracket 302 and the hydrophone bracket 402 are both provided with the slide groove. The Y-axis guide rod 207 is a flat bar. The groove width of the slide groove matches the thickness of the Y-axis guide rod 207, so that the ultrasonic probe bracket 302 and the hydrophone bracket 402 can be snapped onto the Y-axis guide rod 207. Holding the ultrasonic probe bracket 302 and the hydrophone bracket 402 can control them to reciprocate along the Y-axis guide rod 207 in the width direction of the cavity 101. This is the third degree of freedom.

[0031] like Figure 5 As shown, the ultrasonic probe holder 302 includes a clamping plate at the bottom and an ultrasonic probe 301 mounting ring fixed to the upper portion of the clamping plate. The ultrasonic probe 301 is fixed to the ultrasonic probe mounting ring by a bolt passing through threaded hole 1 303. The slide groove is opened between the clamping plates. The internal gap width of the clamping plates matches the thickness of the Y-axis guide rod 207. The clamping plates are fixed to the Y-axis guide rod 207 by bolts passing through threaded hole 2 304. Loosening the bolts allows the ultrasonic probe 301 to be replaced or the ultrasonic probe holder 302 to be slid to move the ultrasonic probe 301 along the width direction of the cavity 101. The ultrasonic probe 301 is the device to be tested and is protected from the influence of the magnetic resonance device by coating with anti-magnetic field interference material. This is not a novel feature of this application and will not be described in detail here.

[0032] like Figure 6 As shown, the hydrophone assembly 400 includes a hydrophone bracket 402, to which a hydrophone 401 is fixed. The hydrophone bracket 402 comprises a clamping plate at the bottom and a hydrophone mounting ring secured to the upper portion of the clamping plate. The slide groove is defined between the clamping plates. The hydrophone 401 is generally conical in shape, allowing it to be inserted directly into the hydrophone mounting ring without being easily removed. The internal clearance width of the clamping plate matches the thickness of the Y-axis guide rod 207. The clamping plate is secured to the Y-axis guide rod 207 via bolts passing through threaded holes 403. Loosening the bolts allows the hydrophone bracket 402 to be slid, allowing the hydrophone 401 to be moved along the width of the cavity 101. The hydrophone 401 is an existing device, coated with anti-magnetic field interference material to prevent it from being affected by magnetic resonance imaging. Selecting a different hydrophone 401 based on the specifications of the ultrasound probe 301 is a common practice for those skilled in the art and will not be further described here.

[0033] The surfaces of the X-axis moving mechanism 200 , the Y-axis moving mechanism, and the Z-axis moving mechanism are all provided with scales 206 along the length direction, so that the operator can confirm the moving distance and the relative distance between the ultrasonic probe 301 and the hydrophone 401 .

[0034] A limiting hole 104 is defined in the side wall of the chamber 101. The limiting hole 104 cooperates with a limiting member to lock the X-axis moving mechanism 200 from moving in the longitudinal direction of the chamber 101. Specifically, the limiting member is a bolt. By screwing the bolt into the limiting hole 104 and abutting against the back surface of the base 202, the base 202 and the X-axis guide rod 103 are clamped together by friction, preventing the X-axis moving mechanism 200 from moving. This prevents the ultrasonic probe 301 and the hydrophone 401 from unintended movement along the X-axis during movement or testing.

[0035] Furthermore, the sound field measurement box 100 further includes handles 102 provided on the outside of two opposite side walls of the cavity 101 , so as to facilitate an operator to grasp and move the present invention.

[0036] Furthermore, in addition to being connected by sliders, slide rods or threaded screws, the X-axis moving mechanism, the Y-axis moving mechanism and the Z-axis moving mechanism can also adopt mechanical connection methods such as gear racks, worm gears, etc., in order to avoid the use of electronic devices as much as possible in the operation method.

[0037] Furthermore, the materials of the sound field measurement box 100, mechanical movement mechanism, ultrasonic probe assembly 300, and hydrophone assembly 400 are all magnetic resonance compatible. Specifically, the magnetic resonance compatible materials are one or more of acrylic, carbon fiber, and polyoxymethylene. Furthermore, in the first embodiment, the mechanical movement mechanism is a purely mechanical design, preventing the present invention from being affected by the strong magnetic field environment of magnetic resonance and becoming inoperable.

Claims

1. A portable hydrophone device for sound field measurement, characterized in that: include: The sound field measurement box includes a cavity for storing ultrasonic media; Ultrasonic probe assembly, used for emitting and receiving ultrasonic signals; A hydrophone assembly, used to measure the sound field characteristics of the ultrasonic wave at different positions in the sound field measurement box; The mechanical moving mechanism is used to respectively drive the ultrasonic probe assembly and the hydrophone assembly to move along three axes within the sound field measurement box.

2. The portable hydrophone device for sound field measurement according to claim 1, characterized in that: The ultrasonic probe assembly includes an ultrasonic probe bracket, one end of which is connected to the mechanical moving mechanism. The other end is connected to the ultrasound probe; The hydrophone assembly comprises a hydrophone bracket, one end of which is connected to the mechanical moving mechanism, and the other end of which is connected to the hydrophone.

3. The portable hydrophone device for sound field measurement according to claim 1, characterized in that: The mechanical moving mechanism comprises: The Y-axis moving mechanism is used to drive the ultrasonic probe assembly and the hydrophone assembly to move along the length direction of the cavity; the Z-axis moving mechanism is used to drive the Y-axis moving mechanism to move along the height direction of the cavity; The X-axis moving mechanism is arranged at one side of the cavity and is used to drive the Z-axis moving mechanism to move along the width direction of the cavity.

4. The portable hydrophone device for sound field measurement according to claim 3, characterized in that: described The X-axis moving mechanism includes: An X-axis guide rod is arranged on one side of the sound field measurement box along the length direction of the cavity; A guide hole, matched with the X-axis guide rod, is opened on the Z-axis moving mechanism.

5. The portable hydrophone device for sound field measurement according to claim 3, characterized in that: The Z-axis moving mechanism includes: A base connected to the X-axis moving mechanism; A Y-axis guide rod, used for installing the Y-axis moving mechanism; The Z-axis adjustment mechanism is arranged in the base and is used to fix the Y-axis guide rod at any position in the Z-axis direction.

6. The portable hydrophone device for sound field measurement according to claim 3, characterized in that: described The Y-axis moving mechanism includes: a Y-axis guide rod, arranged along the width direction of the cavity and connected to the Z-axis moving mechanism; A guide hole, matched with the Y-axis guide rod, is opened at one end of the ultrasonic probe assembly and the hydrophone assembly.

7. The portable hydrophone device for sound field measurement according to claim 3, characterized in that: A scale is provided on the surface of one or more of the X-axis moving mechanism, the Y-axis moving mechanism, and the Z-axis moving mechanism along its length direction.

8. The portable hydrophone device for sound field measurement according to claim 4, characterized in that: A limiting hole is provided on the side wall of the cavity, and the limiting hole cooperates with a limiting member to lock the movement of the X-axis moving mechanism in the longitudinal direction of the cavity.

9. The portable hydrophone device for sound field measurement according to claim 5, characterized in that: The Z-axis adjustment mechanism includes: A screw rod is rotatably arranged in the base along the height direction of the cavity; A Z-axis guide rod is provided in the base and arranged around the screw rod; A slider having a threaded hole therein for matching the screw rod and a through hole for matching the Z-axis guide rod; A knob is provided on the top of the screw rod to drive the screw rod to rotate; The bearing is arranged in the bearing seat of the base, the inner ring is matched with the screw rod, and the outer ring is matched with the bearing seat.

10. The portable hydrophone device for sound field measurement according to any one of claims 1 to 9, characterized in that: The sound field measurement box includes a handle, which is arranged outside two opposite side walls of the cavity.

Images