Biological performance testing device of focused ultrasonic transducer

Abstract

The utility model discloses a biological performance testing device of a focused ultrasonic transducer, which comprises an accommodating structure, a first connecting structure, a second connecting structure and a testing structure, and is characterized in that the accommodating structure is used for accommodating a certain volume of ultrasonic transmission medium; the first test platform and the second test platform are vertically distributed in the ultrasonic transmission medium and are respectively used for placing a first test object and a second test object, and a center hole is formed in the first test platform; and the transducer adjusting mechanism is used for installing and adjusting the transducer to be tested, so that the transducer to be tested is ultrasonically focused on the first test object or the second test object below the central hole in the ultrasonic transmission medium. Through the design of the upper test platform and the lower test platform, independent and combined tests of different targets can be realized, and a real clinical scene is fully simulated, so that the biological performance of the ultrasonic transducer is effectively verified, and reliable technical support is provided for safe use of the focused ultrasonic transducer.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic transducer testing, in particular to a biological performance testing device of a focused ultrasonic transducer. Background Art

[0002] Ultrasound focusing is a treatment method that uses the sound radiation of ultrasound to converge and focus to form a high-temperature treatment point. The focal area (focus) of the sound radiation can achieve focal area heat generation (thermal effect), focal area cavitation (cavitation effect), and focal area mechanical force generation (mechanical effect) by setting different ultrasonic emission energies.

[0003] Ultrasonic focusing requires the use of a focused ultrasound transducer, and the acoustic properties of the focused ultrasound transducer itself need to be tested and verified, such as the ultrasound focal length, focal zone size, and maximum sidelobe level. Furthermore, the biological performance of the focused ultrasound transducer also needs to be tested and verified. This is usually verified using temperature-sensitive phantoms or ex vivo tissue. The testing and verification content includes focal zone temperature (applicable to thermal effects, cavitation effects, and mechanical effects) and biological focal zone (applicable to thermal effects and cavitation effects).

[0004] Currently, there are many test devices for the acoustic characteristics of focused ultrasound transducers, but there are fewer test devices for verifying the biological performance of focused ultrasound transducers, and they can often only test one target object, that is, a single temperature-sensitive phantom or in vitro tissue test. If the target object is a temperature-sensitive phantom, the acoustic characteristics are single and cannot simulate real body tissue. If the target object is in vitro tissue, it is difficult to accurately measure the actual focal temperature. Both situations are difficult to simulate real clinical scenarios. Summary of the Invention

[0005] Purpose of the invention: In order to overcome the problems existing in the prior art, the utility model provides a biological performance testing device for a focused ultrasound transducer. Through the design of two upper and lower test platforms, individual and combined tests of different targets can be realized, fully simulating real clinical scenarios, thereby providing reliable technical support for the safe use of focused ultrasound transducers.

[0006] Summary of the invention: To achieve the above objectives, the present invention provides a biological performance testing device for a focused ultrasound transducer, comprising:

[0007] An accommodating structure for accommodating a certain volume of ultrasonic transmission medium;

[0008] The first test platform and the second test platform are arranged in an upper and lower manner in the ultrasonic transmission medium, and are used to place the first test object and the second test object respectively, wherein a central hole is opened on the first test platform;

[0009] The transducer adjustment mechanism is used to install and adjust the transducer to be tested so that the transducer can achieve ultrasound focusing on the first test object or the second test object below the central hole in the ultrasound transmission medium.

[0010] Specifically, the ultrasound transmission medium is degassed water or ultrasound gel.

[0011] Specifically, the accommodating structure includes a transparent constant temperature container with an opening on the top, and the transparent constant temperature container is connected to an inlet and outlet pipe.

[0012] Specifically, the first test platform and the second test platform are made of transparent material.

[0013] Specifically, the first test object and the second test object are an in vitro tissue and a temperature-sensitive phantom, respectively.

[0014] Specifically, a limiting structure is provided on the first test platform for achieving limiting and fixing of the first test object.

[0015] Furthermore, the second test platform can be directionally moved relative to the first test platform.

[0016] Furthermore, the second test platform is installed on the bottom of the first test platform through a slide rail structure, thereby achieving horizontal sliding.

[0017] Specifically, the transducer to be tested is provided with an axis indicating device for indicating the focal area or center point of the transducer to be tested.

[0018] Specifically, the transducer adjustment mechanism includes a three-axis motion platform or a robotic arm for realizing three-way movement adjustment of the transducer to be tested. The end of the three-axis motion platform or the robotic arm is provided with a quick-release structure for realizing fast installation and removal of the transducer to be tested.

[0019] Beneficial Effects: This utility model, through the design of two upper and lower test platforms, enables individual and combined testing of different targets, fully simulating real-world clinical scenarios. Furthermore, the transducer adjustment mechanism allows for free adjustment of the position of the transducer under test relative to the target, ensuring its focal zone is within the target. This effectively verifies the biological performance of the ultrasonic transducer, providing reliable technical support for the safe use of focused ultrasound transducers. Furthermore, the device has a high degree of automation, a controllable testing process, and features a simple structure, easy operation, precision, and efficiency, facilitating on-site testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the biological performance testing device in an embodiment of the present utility model;

[0021] Figure 2This is a schematic diagram of the structures of the first test platform and the second test platform in an embodiment of the present utility model;

[0022] Figure 3 This is a top view of the first test platform in an embodiment of the present utility model;

[0023] The figure includes: 1-transducer to be tested, 2-temperature control unit, 3-first test platform, 31-center hole, 32-limiting structure, 4-first test object, 5-second test platform, 6-transparent constant temperature container, 7-transducer adjustment mechanism, 8-slide rail structure. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0025] Reference Figures 1 to 3 The present invention provides a biological performance testing device for a focused ultrasound transducer, comprising:

[0026] An accommodating structure for accommodating a certain volume of ultrasonic transmission medium;

[0027] The first test platform 3 and the second test platform 5 are arranged vertically in the ultrasonic transmission medium and are used to place the first test object 4 and the second test object respectively, wherein the first test platform 3 is provided with a central hole 31;

[0028] The transducer adjustment mechanism 7 is used to install and adjust the transducer 1 to be tested so that the transducer 1 can achieve ultrasound focusing on the first test object 4 or the second test object below the central hole 31 in the ultrasound transmission medium.

[0029] Specifically, the ultrasound transmission medium can be degassed water or ultrasound gel, etc. In this embodiment, degassed water is filled in the containing structure, so that the transducer and the test object in the test state are both located in the degassed water to simulate a real clinical scenario.

[0030] Specifically, the accommodating structure includes a transparent constant temperature container 6, which is connected to an inlet and outlet pipe to achieve inlet and outlet control; the top of the transparent constant temperature container 6 is provided with an opening to achieve the replacement of the test object and the adjustment of the transducer 1 to be tested. Exemplarily, the transparent constant temperature container 6 includes a transparent container, a heating unit located at the bottom of the transparent container, and a temperature control unit 2 (such as a temperature sensor, etc.) located inside the transparent container. The two cooperate to achieve water temperature control, so that the water temperature is maintained at about 37°C to simulate a real clinical environment. In addition, in order to facilitate the observation of the test process, the first test platform 3, the second test platform 5 and the transparent container are all made of transparent PMMA material.

[0031] Specifically, the first test object 4 and the second test object can be different target objects, such as ex vivo tissue and a temperature-sensitive phantom, thereby achieving multiple verifications. In this embodiment, the first test object 4 and the second test object are, respectively, ex vivo tissue and a temperature-sensitive phantom. The ex vivo tissue can simulate real tissue, thereby verifying tissue degeneration under real conditions, and the temperature-sensitive phantom can measure and verify the focal temperature under ideal conditions with high measurement accuracy. Furthermore, combined testing of ex vivo tissue and a temperature-sensitive phantom can be further implemented to obtain the focal temperature changes after the ultrasound signal passes through the ex vivo tissue. This can not only simulate real body tissue but also obtain the actual focal temperature changes, effectively simulating real clinical scenarios.

[0032] Specifically, the central hole 31 on the first test platform 3 is used as an ultrasonic signal path. The size of the hole can be set according to the transducer 1 to be tested, thereby achieving three test states:

[0033] ① First test state: a first test object 4 is placed on the first test platform 3, the second test platform 5 is empty, and the position of the transducer 1 to be tested is adjusted by the transducer adjustment mechanism 7 so that its ultrasound is focused on the first test object 4;

[0034] ② Second test state: The first test platform 3 is empty, and a second test object is placed on the second test platform 5. The position of the transducer 1 to be tested is adjusted by the transducer adjustment mechanism 7 so that the ultrasound is focused on the second test object below the center hole 31. That is, the ultrasound passes through the center hole 31 and is focused on the second test object.

[0035] ③ Third test state: Place the first test object 4 and the second test object on the first test platform 3 and the second test platform 5 respectively, and adjust the position of the transducer 1 to be tested by the transducer adjustment mechanism 7 so that its ultrasound is focused on the second test object below the center hole 31, that is, the ultrasound passes through the first test object 4 and the center hole 31 and is focused on the second test object.

[0036] Specifically, refer to Figure 2 、 Figure 3 , a limiting structure 32, such as a limiting block, a limiting groove, etc., can be set on the first test platform 3 to achieve the limiting fixation of the first test object 4; the second test platform 5 can be a transparent tank to facilitate the placement of the second test object. Furthermore, in order to facilitate the replacement of the second test object, the second test platform 5 can be directional moved relative to the first test platform 3. For example, referring to Figure 2 The second test platform 5 is installed on the bottom of the first test platform 3 through a slide rail structure 8, thereby achieving horizontal sliding, which can be controlled manually or electrically.

[0037] Furthermore, to ensure that the ultrasound of the transducer 1 under test is focused on the target object, the transducer 1 under test needs to be equipped with an axis indicator to indicate the focal area or center point of the transducer. Specifically, the axis indicator can be an imaging ultrasound coaxial with the transducer or a coaxial laser signal light.

[0038] Specifically, the transducer adjustment mechanism 7 can employ a three-axis motion platform or a robotic arm, thereby enabling three-dimensional movement of the transducer 1 under test. This allows for adjustment of the positional relationship between the transducer 1 under test and the target object, ensuring that the focal region is within the target object and effectively guaranteeing measurement accuracy. In this embodiment, the transducer adjustment mechanism 7 employs a three-axis motion platform. Furthermore, a quick-release mechanism is provided at the end of the motion platform or robotic arm for rapid installation and removal of the transducer 1 under test.

[0039] The specific implementation of this embodiment is as follows:

[0040] 1. Test preparation:

[0041] The transducer 1 to be tested is mounted on the transducer adjustment mechanism 7, and degassed water is filled into the transparent constant temperature container 6 through the water inlet and outlet pipes, so that the transducer 1 to be tested and the test platform are both located in the degassed water. At the same time, the water temperature is maintained at around 37°C to simulate the human body environment.

[0042] 2. Conducting in vitro tissue experiments alone:

[0043] 2.1. Adjust the test object:

[0044] A first test object 4, i.e., an ex vivo tissue, is placed on the first test platform 3 and fixed at the center of the platform by a limiting structure 32;

[0045] 2.2. Adjust the focus position:

[0046] Under the guidance of the transducer coaxial laser pointer, the position of the transducer to be tested 1 is adjusted by the transducer adjustment mechanism 7 so that its theoretical focal area is located within the ex vivo tissue;

[0047] 2.3. Implement ultrasonic emission:

[0048] Controlling the transducer 1 to be tested to emit focused ultrasound of a set intensity;

[0049] If a series of ultrasonic emissions are required, the test object is replaced and the position of the transducer 1 to be tested is adjusted, and the transducer 1 to be tested is controlled to emit focused ultrasound of a set intensity, and the operation is repeated until the test is completed;

[0050] 2.4. Observation of results:

[0051] The ex vivo tissue is removed and cut axially to obtain the tissue degeneration status, and the tissue degeneration status of a series of ultrasound emissions can also be compared.

[0052] 3. Conduct phantom test separately:

[0053] 3.1. Adjust the test object:

[0054] Place the second test object, i.e., the temperature-sensitive phantom, on the second test platform 5 and fix the second test platform 5 to the bottom of the first test platform 3 via the slide rail structure 8, ensuring that the temperature-sensitive phantom is located below the center hole 31;

[0055] 3.2. Adjust the focus position:

[0056] Under the guidance of the transducer coaxial laser pointer, the position of the transducer to be tested 1 is adjusted by the transducer adjustment mechanism 7 so that its theoretical focal area is located within the temperature-sensitive phantom below the central hole 31;

[0057] 3.3. Implement ultrasonic emission:

[0058] Controlling the transducer 1 to be tested to emit focused ultrasound of a set intensity;

[0059] If a series of ultrasonic emissions are required, the test object is replaced and the position of the transducer 1 to be tested is adjusted, and the transducer 1 to be tested is controlled to emit focused ultrasound of a set intensity, and the operation is repeated until the test is completed;

[0060] 3.4. Observation of results:

[0061] The temperature-sensitive phantom is removed, cut open axially, and the focal temperature is obtained based on the color change measurement. The focal conditions of a series of ultrasound emissions can also be compared.

[0062] 4. Conduct combined experiments on ex vivo tissues and phantoms:

[0063] 4.1. Adjust the test object:

[0064] Place the second test object, i.e., the temperature-sensitive phantom, on the second test platform 5 and fix the second test platform 5 to the bottom of the first test platform 3 via the slide rail structure 8, ensuring that the temperature-sensitive phantom is located below the center hole 31;

[0065] 4.2. Adjust the focus position:

[0066] Under the guidance of the transducer coaxial laser pointer, the position of the transducer to be tested 1 is adjusted by the transducer adjustment mechanism 7 so that its theoretical focal area is located in the temperature-sensitive phantom just below the central hole 31. Then, the first test object 4, i.e., ex vivo tissue, is placed on the first test platform 3 and fixed to the center of the platform by the limiting structure 32.

[0067] 4.3. Implement ultrasonic emission:

[0068] Controlling the transducer 1 to be tested to emit focused ultrasound of a set intensity;

[0069] If a series of ultrasonic emissions are required, the test object is replaced and the position of the transducer 1 to be tested is adjusted, and the transducer 1 to be tested is controlled to emit focused ultrasound of a set intensity, and the operation is repeated until the test is completed;

[0070] 4.4. Observation of results:

[0071] The ex vivo tissue and temperature-sensitive phantom are removed and cut axially to obtain the tissue degeneration and focal temperature. The tissue degeneration and focal temperature of a series of ultrasound shots can also be compared.

[0072] The above specific embodiments merely describe preferred embodiments of the present invention and do not limit the scope of protection of the present invention. Without departing from the design concept and spirit of the present invention, any modifications, substitutions, and improvements made by a person skilled in the art to the technical solution of the present invention based on the text description and drawings provided herein shall fall within the scope of protection of the present invention.

Claims

1. A biological performance testing device for a focused ultrasound transducer, characterized in that: include: An accommodating structure for accommodating a certain volume of ultrasonic transmission medium; The first test platform and the second test platform are arranged in an upper and lower manner in the ultrasonic transmission medium, and are used to place the first test object and the second test object respectively, wherein a central hole is opened on the first test platform; The transducer adjustment mechanism is used to install and adjust the transducer to be tested so that the transducer can achieve ultrasound focusing on the first test object or the second test object below the central hole in the ultrasound transmission medium.

2. The biological performance testing device according to claim 1, characterized in that: The ultrasound transmission medium is degassed water or ultrasound gel.

3. The biological performance testing device according to claim 1, characterized in that: The accommodating structure comprises a transparent constant-temperature container with an opening on the top, and the transparent constant-temperature container is connected with an inlet and outlet pipe.

4. The biological performance testing device according to claim 1, characterized in that: The first test platform and the second test platform are made of transparent material.

5. The biological performance testing device according to claim 1, characterized in that: The first test object and the second test object are an in vitro tissue and a temperature-sensitive phantom, respectively.

6. The biological performance testing device according to claim 1, characterized in that: The first test platform is provided with a limiting structure for achieving limiting fixation of the first test object.

7. The biological performance testing device according to claim 1, characterized in that: The second test platform is directionally movable relative to the first test platform.

8. The biological performance testing device according to claim 1, characterized in that: The second test platform is installed on the bottom of the first test platform through a slide rail structure, thereby achieving horizontal sliding.

9. The biological performance testing device according to claim 1, characterized in that: The transducer to be tested is provided with an axis indicating device for indicating the focal area or center point of the transducer to be tested.

10. The biological performance testing device according to claim 1, characterized in that: The transducer adjustment mechanism includes a three-axis motion platform or a mechanical arm for realizing three-way movement adjustment of the transducer to be tested. The end of the three-axis motion platform or the mechanical arm is provided with a quick-release structure for realizing fast assembly and disassembly of the transducer to be tested.

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