CN201324448Y - Hydrophone adjusting device for sound field measurement of high intensity focused ultrasound - Google Patents

Abstract

The utility model relates to a hydrophone adjustment device for measuring high-intensity focused ultrasonic sound field, which relates to a medical ultrasonic treatment instrument. Constitute the connection between the parts of the device: the pressure sensor (11) is embedded in the tube at the lower end of the hollow conduit (8), and the signal line (6) passes through the hollow conduit (8) to connect with the pressure sensor (11); the lower end of the hollow conduit (8) Pass through the small hole in the center of the double-layer horizontal platform and the straight rod (2) is axisymmetrically fixed on both sides of the fixed pallet (1) with a pipe clip (7); the lower part of the straight rod is threadedly connected with the upper universal joint (3); The upper universal joint (3) is connected with the lower universal joint (4) through the cross shaft; the lower universal joint (4) is welded on the horizontal backing plate (9); the double-angle platform group (5) and the fixed support platform ( 1) Connect with screws; drive the hollow conduit (8) to rotate by adjusting the double-angle stage group (5), so that the sensing surface of the pressure sensor (11) is kept parallel to the horizontal plane, making the sound field measurement more accurate.

Description

Hydrophone adjustment device for high-intensity focused ultrasound sound field measurement

technical field

The utility model relates to the field of medical ultrasonic therapy instruments, and is particularly suitable for the measurement of high-intensity focused ultrasonic sound fields.

Background technique

During the measurement of the high-intensity ultrasonic sound field, the sheet pressure-sensitive sensor is fixed on the probe frame, and the three-dimensional movement regulator controls the probe to move in the measurement plane and monitor the change of the sound field.

The function of the probe frame used in the device is to ensure that the normal direction of the sheet pressure sensitive sensor is as perpendicular as possible to the measurement level of the water tank. In the actual installation process, it cannot be guaranteed that the normal direction of the sheet pressure sensitive sensor is completely perpendicular to the measurement level, and it cannot be adjusted once the installation is completed. This will inevitably result in the inaccuracy of the measured sound field, which will lead to the problem of decreased focusing accuracy in the actual treatment process.

Contents of the invention

The technical problem to be solved by the utility model is to provide a fixed adjustment device for the sheet pressure sensitive sensor, so that the normal direction of the sheet pressure sensitive sensor can be precisely adjusted, so that it is completely perpendicular to the measuring horizontal plane.

The technical scheme that the utility model solves its technical problem adopts is:

A hydrophone adjustment device for high-intensity focused ultrasonic sound field measurement, which consists of a pressure sensor, a hollow conduit, a fixed bracket, a double-angle platform group, a straight rod, and the connection between the upper universal joint (3) and the lower universal joint The universal joint, the horizontal backing plate and the sound-absorbing board are bonded to form a double-layer horizontal platform.

The pressure sensor is embedded in the tube at the lower end of the hollow conduit, and the signal line passes through the hollow conduit to connect with the pressure sensor;

The lower end of the hollow conduit passes through the small hole in the center of the double-layer horizontal platform and the straight rod is fixed on the two sides of the fixed bracket axis symmetrically with the tube clamp, so that the pressure sensor is in contact with the water surface.

The lower part of the straight rod is provided with threads, which are screwed into the threaded holes of the upper universal joint;

The upper universal joint and the lower universal joint are connected by a cross shaft;

The lower universal joint is welded on the horizontal backing plate;

The double-angle platform group is connected with the fixed support platform with screws;

The hollow conduit is driven to rotate by adjusting the double-angle stage group, so that the sensing surface of the pressure sensor is kept parallel to the horizontal plane.

The horizontal backing plate is made of metal, and the sound-absorbing board is made of rock wool board.

The double-angle stage group is composed of two angle stages with an angle adjustment range of ±10° and a minimum reading of 5'.

The function completed by the above structure is: when the sensing plane of the pressure sensor is not parallel to the circular section of the hollow duct when it is installed in the hollow duct, the sensing plane of the pressure sensor can be completely aligned with the floating platform by adjusting the two angle positions. Parallel, and the floating platform is parallel to the water surface, so the sensing plane of the pressure sensor will be completely parallel to the water surface.

The beneficial effect of the utility model is that the normal direction of the pressure sensor can be conveniently and accurately adjusted through the combination of the high-precision angle stage, so that it is perpendicular to the horizontal plane, and finally the sound field measurement is more accurate.

Description of drawings

Fig. 1 is a front view of a hydrophone adjustment device for high-intensity focused ultrasonic sound field measurement.

Fig. 2 is a cross-sectional view along line A-A of Fig. 1 .

In Figure 1: fixed support platform 1, straight rod 2, upper universal joint 3, lower universal joint 4, double-angle platform group 5, signal line 6, pipe clamp 7, hollow conduit 8, horizontal backing plate 9, sound-absorbing Plate 10, pressure sensor 11.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The hydrophone adjustment device for high-intensity focused ultrasonic sound field measurement is characterized in that the device includes a pressure sensor 11, a hollow conduit 8, a fixed bracket 1, a double-angle platform group 5, a straight rod 2, and an upper universal joint 3 is formed by connecting the universal joint formed by connecting the lower universal joint 4, and the double-layer horizontal platform formed by bonding the horizontal backing plate 9 and the sound-absorbing board 10;

The pressure sensor 11 is embedded in the tube at the lower end of the hollow conduit 8, and the signal line 6 is connected to the pressure sensor 11 through the hollow conduit 8;

The lower end of the hollow conduit 8 passes through the small hole in the center of the double-layer horizontal platform and the straight rod 2 is axisymmetrically fixed on the two sides of the fixed pallet 1 with the pipe clamp 7;

The lower part of the straight rod 2 is provided with a thread, which is screwed in the threaded hole of the upper universal joint 3;

The upper universal joint 3 and the lower universal joint 4 are connected by a cross shaft;

The lower universal joint 4 is welded on the horizontal backing plate 9;

The double-angle platform group 5 is connected with the fixed support platform 1 with screws;

The hollow conduit 8 is driven to rotate by adjusting the double-angle stage group 5, so that the sensing surface of the pressure sensor 11 is kept parallel to the horizontal plane.

The horizontal backing plate 9 is made of metal, and the sound-absorbing board 10 is made of rock wool board.

The double-angle stage group 5 is ordered according to the parameters of a high-precision angle stage with an angle adjustment range of ±10° and a minimum reading of 5'.

Claims (3)

1. The hydrophone adjustment device for high-intensity focused ultrasonic sound field measurement is characterized in that: the device includes a pressure sensor (11), a hollow conduit (8), a fixed bracket (1), a double-angle platform group (5 ), a straight rod (2), a universal joint formed by connecting the upper universal joint (3) and the lower universal joint (4), and a double-layer horizontal platform formed by bonding the horizontal backing plate (9) and the sound-absorbing panel (10) connected; The pressure sensor (11) is embedded in the tube at the lower end of the hollow conduit (8), and the signal line (6) passes through the hollow conduit (8) to connect with the pressure sensor (11); The lower end of the hollow conduit (8) passes through the small hole in the center of the double-layer horizontal platform and the straight rod (2) is axisymmetrically fixed on the two sides of the fixed pallet (1) with the pipe clamp (7); The bottom of the straight rod (2) is provided with a thread, which is screwed in the threaded hole of the upper universal joint (3); The upper universal joint (3) is connected with the lower universal joint (4) through a cross shaft; The lower universal joint (4) is welded on the horizontal backing plate (9); The double-angle platform group (5) is connected with the fixed support platform (1) with screws; The hollow conduit (8) is driven to rotate by adjusting the double-angle stage group (5), so that the sensing surface of the pressure sensor (11) is kept parallel to the horizontal plane. 2. A hydrophone adjustment device for high-intensity focused ultrasonic sound field according to claim 1, characterized in that: the horizontal backing plate (9) is made of metal, and the sound-absorbing board (10) is made of rock wool board . 3. A kind of hydrophone adjusting device for high-intensity focused ultrasonic sound field according to claim 1, it is characterized in that: the double-angle platform group (5) is by angle adjustment range ± 10 °, the minimum reading is 5' composed of two angular platforms.

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