Light and thin wearable ultrasonic device with imaging and efficient power output capabilities and working method

Abstract

The invention discloses a light and thin wearable ultrasonic device with imaging and efficient power output capabilities and a working method of the light and thin wearable ultrasonic device, and aims to solve the problems that an existing wearable ultrasonic device is large in thickness, low in imaging sensitivity and power output efficiency and serious in heating, and imaging and power output areas do not coincide. The device comprises a front-end package, an ultrasonic transducer array and a rear-end package. The front-end package is made of a flexible material and is in contact with an organism to conduct ultrasonic waves; the ultrasonic transducer array comprises an ultrasonic transducer array element with an impedance reverse matching structure, has the characteristics of being light and thin, and has imaging and efficient power output capabilities at the same time; the rear end package is used for protecting the device and providing an insulation function. According to the device, high coincidence of an imaging area and a power output area is realized by sharing the piezoelectric layer, and power output can be accurately controlled based on a real-time imaging result in combination with a closed-loop control strategy.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities and a working method. Background Art

[0002] Ultrasonic transducers are devices that use the piezoelectric effect to achieve mutual conversion between electrical energy and acoustic energy, and have been widely used in the biomedical field. However, due to their large size and bulky structure, traditional ultrasonic transducers usually need to rely on professionals or brackets to maintain stable contact with the surface of human skin. Especially in curved areas such as the skull, breasts, and abdomen, the rigid emitting surface is difficult to completely fit the curved surface of the skin, which seriously limits its scope of application.

[0003] To overcome the shortcomings of traditional ultrasonic transducers in terms of volume and rigidity, wearable ultrasonic transducers have emerged. These transducers have achieved flexible and miniaturized designs by optimizing piezoelectric elements, electrodes, and packaging structures, and can meet the needs of long-term wear.

[0004] Ultrasonic therapy technology, based on the thermal, mechanical and cavitation effects of ultrasound, has shown great potential in bone therapy, nerve regulation, transdermal drug delivery and wound healing. Wearable ultrasonic transducers are particularly suitable for the long-term treatment needs of patients with chronic diseases because they are easy to wear for a long time.

[0005] The existing patent "A transducer, a wearable ultrasound device and an ultrasound monitoring and treatment system" (publication number CN117653943A) discloses a wearable ultrasound device, which includes a plurality of transducers, each of which is composed of a treatment component and a monitoring component arranged in parallel. The monitoring component is used to monitor the state of the area to be treated and feed the information back to the control circuit to adjust the parameters such as the direction and power of the ultrasound emitted by the treatment component to achieve closed-loop control.

[0006] However, the device still has the following shortcomings: First, the back of the transducer in the device has a backing layer, and the backing layer is generally thick, especially more obvious at low frequencies, which makes the wearable ultrasound device relatively thick; Second, the device uses a backing layer to eliminate imaging artifacts, but the backing layer absorbs the back ultrasonic energy, causing energy loss, reducing imaging sensitivity and power output efficiency, and the backing layer generates heat, affecting the service life; Third, the treatment component and the monitoring component in the device are arranged side by side, resulting in incomplete overlap of the treatment and monitoring areas, which will affect the effect of closed-loop control. Summary of the invention

[0007] The purpose of the present invention is to provide a thin and light wearable ultrasound device with both imaging and efficient power output capabilities and a working method, so as to solve the problems of existing wearable ultrasound devices being relatively thick, having low imaging sensitivity and power output efficiency, severe heat generation, and non-overlapping imaging and power output areas.

[0008] To achieve the above-mentioned object, the present invention provides a thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities, comprising a front-end package, an ultrasound transducer array and a back-end package arranged in sequence from top to bottom;

[0009] The front-end package is used to contact with the organism and conduct ultrasonic waves into the interior of the organism;

[0010] The ultrasonic transducer array comprises ultrasonic transducer array elements with an impedance anti-matching structure, which have both imaging and high-efficiency power output capabilities;

[0011] The back-end packaging is used to protect the device structure and provide insulation function.

[0012] Preferably, the material of the front-end packaging is flexible, biocompatible and insulating, with an acoustic impedance of 1 to 3 MRayl and a sound velocity of 1000 to 3000 m / s, including but not limited to hydrogel, hydrogel-elastomer composite material, polydimethylsiloxane, polyurethane and silicone rubber.

[0013] Preferably, the material of the rear-end packaging has flexibility, biocompatibility and insulation, including but not limited to polyimide, polydimethylsiloxane, polyurethane and silicone rubber.

[0014] Preferably, the ultrasonic transducer array comprises a plurality of ultrasonic transducer array elements, a connecting circuit and a flexible insulating material filled therein.

[0015] Preferably, the ultrasonic transducer array element comprises a matching layer, a piezoelectric layer and an anti-matching layer arranged in sequence from top to bottom;

[0016] The matching layer is used to improve the transmittance of ultrasonic waves and increase the bandwidth of the ultrasonic transducer, and can be a single-layer structure composed of a single material or a multi-layer structure composed of multiple materials;

[0017] The piezoelectric layer is used for generating and receiving ultrasonic signals, and the material includes but is not limited to piezoelectric ceramics, piezoelectric single crystals and piezoelectric composite materials;

[0018] The anti-matching layer comprises a first anti-matching layer and a second anti-matching layer, which are used to improve the reflectivity of the back-directed ultrasonic wave, enhance the power output efficiency and the receiving sensitivity, reduce the heat generation and prolong the service life; the back-directed ultrasonic wave is the ultrasonic wave propagating from the piezoelectric layer to the anti-matching layer;

[0019] The acoustic impedance of the first anti-matching layer is smaller than the acoustic impedance of the piezoelectric layer, and the thickness thereof is 0.05 to 0.5λ1, where λ1 is the wavelength of the ultrasonic wave in the first anti-matching layer;

[0020] The acoustic impedance of the second anti-matching layer is greater than the acoustic impedance of the first anti-matching layer, and the thickness thereof is 0.05-0.5λ2, where λ2 is the wavelength of ultrasonic waves in the second anti-matching layer.

[0021] Preferably, an acoustic lens is provided between the matching layer and the front-end package for controlling the ultrasonic sound field distribution, and its shape includes but is not limited to spherical, ellipsoidal, parabolic, hyperbolic and Fresnel shapes.

[0022] Preferably, the connecting circuit is flexible, including but not limited to a flexible printed circuit board, a metal film and a metal wire.

[0023] A method for operating a thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities comprises the following steps:

[0024] S8-1, wearing the wearable ultrasound device on a biological body, wherein the front-end package is in direct contact with the biological body;

[0025] S8-2, using a low voltage or low duty cycle imaging pulse voltage to excite part or all of the ultrasonic transducer array elements of the ultrasonic transducer array, generating ultrasonic waves that propagate into biological tissues, and then part or all of the ultrasonic transducer array elements of the ultrasonic transducer array receive ultrasonic echo signals to achieve ultrasonic imaging;

[0026] S8-3, adjusting the position of the wearable ultrasound device according to the ultrasound imaging result so that the action area of ​​the ultrasound wave coincides with the target area;

[0027] S8-4, using a high voltage or a high duty cycle power output voltage to excite part or all of the ultrasonic transducer array elements of the ultrasonic transducer array to output ultrasonic energy to the target area;

[0028] S8-5, using the method of step S8-2 to perform ultrasonic imaging, thereby observing the effect of step S8-4 on the target area, and adjusting the parameters of the power output voltage in step S8-4;

[0029] S8-6. Repeat steps S8-4 to S8-5. During this process, the parameters of the power output voltage described in step S8-4 are continuously adjusted according to the ultrasonic imaging conditions to guide accurate power output until the application requirements are met.

[0030] Preferably, each time the method of step S8-2 is used to perform ultrasonic imaging, shape estimation and beam adaptive adjustment of the wearable ultrasonic device are first performed, including the following steps:

[0031] S9-1, using a low voltage or low duty cycle imaging pulse voltage to excite part or all of the ultrasonic transducer array elements of the ultrasonic transducer array, generating ultrasonic waves that propagate into biological tissues, and then part or all of the ultrasonic transducer array elements of the ultrasonic transducer array receive ultrasonic echo signals;

[0032] S9-2, performing imaging using the ultrasound echo signal based on the shape estimation parameters of the wearable ultrasound device;

[0033] S9-3, optimizing shape estimation parameters of the wearable ultrasound device according to the index of the imaging image;

[0034] S9-4, repeating steps S9-1 to S9-3 until the index of the imaging image meets the requirements, and obtaining the optimized shape estimation parameters of the wearable ultrasound device;

[0035] S9-5. Control the subsequent excitation voltage delay of the ultrasonic transducer array according to the optimized shape estimation parameters of the wearable ultrasonic device, so that the ultrasonic action area coincides with the target area, thereby realizing beam adaptive adjustment.

[0036] The present invention provides a lightweight wearable ultrasound device and a working method that has both imaging and high-efficiency power output capabilities, and has the following technical effects:

[0037] 1. The present invention provides a wearable ultrasound device, which is packaged and connected with flexible materials, and is easy to wear on a biological body. By designing an acoustic lens on the surface of an ultrasonic transducer, beam expansion, point focusing, line focusing, and volume focusing effects can be achieved, meeting various application requirements.

[0038] 2. The back of the ultrasonic transducer in the present invention uses two anti-matching layers instead of the traditional backing layer. The thickness of the two anti-matching layers is less than half of their respective ultrasonic lengths, which significantly reduces the overall thickness;

[0039] 3. In the present invention, the anti-matching layer eliminates imaging artifacts and avoids energy loss by reflecting rather than absorbing the back-directed ultrasonic waves, thereby improving imaging sensitivity and power output efficiency, reducing heat generation, and extending the life of the device;

[0040] 4. In the present invention, ultrasonic imaging and power output share the same piezoelectric layer, ensuring that the imaging area and the power output area are highly overlapped. Therefore, the power output area can be imaged, and the power output can be adjusted based on the imaging results to achieve precise closed-loop control. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1This is a schematic structural view of a wearable ultrasound device obtained in Example 1 of the present invention, which is a thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities;

[0042] Figure 2 This is a schematic structural view of an ultrasonic transducer array element obtained in Example 1 of a thin and light wearable ultrasonic device having both imaging and high-efficiency power output capabilities of the present invention;

[0043] Figure 3 (a) is a diagram showing the simulation results of the emission excitation response of the ultrasonic transducer array element obtained in Example 1 of a thin and light wearable ultrasonic device having both imaging and high-efficiency power output capabilities of the present invention;

[0044] Figure 3 (b) is a diagram showing the simulation results of the emission excitation response of the ultrasonic transducer array element with a backing layer structure obtained in Example 1 of a thin and light wearable ultrasonic device having both imaging and high-efficiency power output capabilities of the present invention;

[0045] Figure 4 (a) is a diagram showing the pulse echo response simulation result of the ultrasonic transducer array element obtained in Example 1 of a thin and light wearable ultrasonic device having both imaging and high-efficiency power output capabilities of the present invention;

[0046] Figure 4 (b) is a diagram showing the pulse echo response simulation results of an ultrasonic transducer array element with a backing layer structure obtained in Example 1 of a thin and light wearable ultrasonic device having both imaging and high-efficiency power output capabilities of the present invention;

[0047] Figure 5 This is a top view of an ultrasonic transducer array obtained in Example 1 of a thin and light wearable ultrasonic device having both imaging and high-efficiency power output capabilities of the present invention.

[0048] Reference numerals

[0049] 1. Front-end packaging; 2. Ultrasonic transducer array; 3. Back-end packaging; 21. Ultrasonic transducer array element; 211. Acoustic lens; 212. First matching layer; 213. Second matching layer; 214. Piezoelectric layer; 215. First anti-matching layer; 216. Second anti-matching layer; 22. Flexible circuit board; 221. Top flexible circuit board; 222. Bottom flexible circuit board. DETAILED DESCRIPTION

[0050] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0051] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "include" or "comprise" and the like used in the present invention mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words "connect" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Top", "bottom", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0052] Embodiment 1

[0053] like Figure 1 As shown, a thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities includes a front-end package 1, an ultrasound transducer array 2, and a back-end package 3 arranged in sequence from top to bottom.

[0054] The front package 1 contacts the organism, and the ultrasonic wave is transmitted into the organism through the front package 1. The front package 1 is made of polyurethane, which has flexibility, biocompatibility and insulation, and an acoustic impedance of 1.6 MRayl, which is close to the acoustic impedance of the soft tissue of the organism.

[0055] The rear end package 3 is used to protect other structures and provide insulation. The material of the rear end package 3 is silicone rubber, which has flexibility, biocompatibility and insulation.

[0056] The ultrasonic transducer array 2 is used for ultrasonic imaging and power output, and the ultrasonic propagation paths of the two are highly overlapped. The ultrasonic transducer array 2 includes nine ultrasonic transducer array elements 21, a flexible circuit board 22, and polydimethylsiloxane filled therein.

[0057] like Figure 2 As shown, the ultrasonic transducer array element 21 includes an acoustic lens 211, a first matching layer 212, a second matching layer 213, a piezoelectric layer 214, a first anti-matching layer 215, and a second anti-matching layer 216, which are arranged in sequence from top to bottom. The acoustic lens 211 is used to control the sound field distribution of the output ultrasonic wave. The first matching layer 212 and the second matching layer 213 are used to improve the transmittance of the ultrasonic wave and increase the bandwidth of the ultrasonic transducer. The piezoelectric layer 214 is used to generate and receive ultrasonic signals. The first anti-matching layer 215 and the second anti-matching layer 216 are used to increase the reflectivity of the back ultrasonic wave, thereby increasing the power output efficiency and receiving sensitivity, and reducing the heat generation of the ultrasonic transducer to extend the service life.

[0058] In this embodiment, the same piezoelectric layer 214 is used for ultrasonic imaging and power output, so the imaging area coincides with the power output area. Therefore, the device can image the power output area and adjust the power output in real time accordingly to achieve closed-loop control.

[0059] The material of the piezoelectric layer 214 is piezoelectric ceramic PZT-4, the center frequency of the ultrasonic wave is 2.2 MHz, and the thickness of the piezoelectric layer 214 is 1 mm.

[0060] The matching layer adopts a double-layer structure composed of two different materials. The material of the first matching layer 212 is epoxy resin, with an acoustic impedance of 2.4 MRayl and a thickness of 0.258 mm. The second matching layer 213 is made of a mixture of tungsten powder and epoxy resin, with an acoustic impedance of 8.3 MRayl and a thickness of 0.256 mm.

[0061] The material of the first anti-matching layer 215 is epoxy resin, the acoustic impedance is 2.4 MRayl, and the thickness is 0.258 mm. The material of the second anti-matching layer 216 is 304 stainless steel, the acoustic impedance is 43.9 MRayl, and the thickness is 0.648 mm.

[0062] In contrast, an ultrasonic transducer array element with a backing layer structure is designed, and the backing layer is used to replace the first anti-matching layer 215 and the second anti-matching layer 216. The other structures are the same as those of the ultrasonic transducer array element 21 in this embodiment. The backing layer is made of a mixture of tungsten powder and epoxy resin, with an acoustic impedance of 8.3 MRayl and a thickness of 10 mm. The thickness of the two anti-matching layers is much smaller than that of the backing layer, so the wearable ultrasonic device in this embodiment is lighter and thinner, which is conducive to improving user experience.

[0063] The KLM model is used to simulate the ultrasonic transducer array element 21 and the ultrasonic transducer array element with a backing layer structure in this embodiment.

[0064] The internal resistance of the excitation source is 50Ω, the output Burst signal, the voltage frequency is 2.2MHz, the voltage amplitude is 1V, and the number of cycles is 10. The emission excitation response of the ultrasonic transducer array element 21 in this embodiment is as follows: Figure 3 (a) is shown. The emission excitation response of the ultrasonic transducer array element with a backing layer structure is shown in Figure 3 (b) shows that the former has a 38% increase in maximum output sound pressure compared to the latter. It can be seen that the ultrasonic transducer array element 21 in this embodiment has a higher power output efficiency and generates less heat, thereby extending the service life of the device.

[0065] The excitation source outputs a short pulse signal. In this embodiment, the pulse echo response of the ultrasonic transducer array element 21 is as follows: Figure 4 (a) is shown. The pulse echo response of the ultrasonic transducer array element with a backing layer structure is shown in Figure 4(b) shows that the -6dB bandwidth of the former is slightly lower than that of the latter, from 59.7% to 52.6%, but the pulse echo sensitivity is increased by 65%. It can be seen that the imaging resolution of the ultrasonic transducer array element 21 in this embodiment will be slightly reduced, but the pulse echo sensitivity will be significantly improved.

[0066] like Figure 2 As shown, in this embodiment, the flexible circuit board 22 includes two pieces, wherein the top flexible circuit board 221 is electrically connected to the top layer of the piezoelectric layer 214 , and the bottom flexible circuit board 222 is electrically connected to the bottom layer of the piezoelectric layer 214 .

[0067] In this embodiment, the top view of the ultrasonic transducer array 2 is as follows: Figure 5 As shown. The ultrasonic transducer array 2 includes nine ultrasonic transducer array elements arranged in three rows and three columns. The flexible circuit board 22 is electrically connected to the ultrasonic transducer array 2 in a row-column addressing manner, wherein the top flexible circuit board 221 has a series of horizontal electrodes, and the bottom flexible circuit board 222 has a series of vertical electrodes. In this way, it is possible to control which ultrasonic transducer array elements 21 are used for imaging and power output.

[0068] Embodiment 2

[0069] A method for operating a thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities. Using the wearable ultrasound device in Example 1, a method for operating a human thigh is provided, comprising the following steps:

[0070] S1. Use medical tape to fix the wearable ultrasound device on the surface of the thigh, with the front package 1 in contact with the thigh;

[0071] S2, sequentially excite each ultrasonic transducer array element 21 of the ultrasonic transducer array 2 for one cycle, emit ultrasonic waves, and all ultrasonic transducer array elements 21 receive echo signals. Based on the shape estimation parameters (lateral curvature and longitudinal curvature) of the wearable ultrasonic device, synthetic aperture imaging is performed using the echo signals;

[0072] S3, optimizing the shape estimation parameters of the wearable ultrasound device according to the signal-to-noise ratio of the imaging image;

[0073] S4, repeating steps S2 to S3 until the signal-to-noise ratio of the imaging image meets the requirement, and obtaining the optimized shape estimation parameters of the wearable ultrasound device;

[0074] S5, adjusting the position of the wearable ultrasound device according to the content of the imaging image, during which steps S2 to S4 are continuously repeated until the ultrasound action area coincides with the target area;

[0075] S6, all the ultrasonic transducer elements 21 of the ultrasonic transducer array 2 are excited for 1 second, and ultrasonic energy is output to the target area inside the thigh;

[0076] S7, using the method of steps S2 to S4 to optimize the shape estimation parameters, then all the ultrasonic transducer elements 21 of the ultrasonic transducer array 2 are excited for one cycle, generating ultrasonic waves that propagate into the thigh, and then all the ultrasonic transducer elements 21 receive ultrasonic echoes and perform imaging, thereby observing the effect of step S6 on the target area;

[0077] S8. Repeat steps S6 to S7. During this process, the excitation parameters in step S6 are continuously adjusted according to the imaging situation in step S7 to guide accurate power output until the application requirements are met.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A thin and light wearable ultrasound device with both imaging and high-efficiency power output capabilities, characterized in that: It includes a front-end package, an ultrasonic transducer array and a back-end package which are sequentially arranged from top to bottom; The front-end package is used to contact with the organism and transmit ultrasonic waves into the interior of the organism; The ultrasonic transducer array comprises ultrasonic transducer array elements with an impedance anti-matching structure, which have both imaging and high-efficiency power output capabilities; The back-end packaging is used to protect the device structure and provide insulation function.

2. A thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities according to claim 1, characterized in that: The material of the front-end packaging is flexible, biocompatible and insulating, with an acoustic impedance of 1 to 3 MRayl and a sound velocity of 1000 to 3000 m / s, including but not limited to hydrogel, hydrogel-elastomer composite material, polydimethylsiloxane, polyurethane and silicone rubber.

3. A thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities according to claim 1, characterized in that: The material of the back-end packaging has flexibility, biocompatibility and insulation, including but not limited to polyimide, polydimethylsiloxane, polyurethane and silicone rubber.

4. A thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities according to claim 1, characterized in that: The ultrasonic transducer array comprises a plurality of ultrasonic transducer array elements, a connecting circuit and a flexible insulating material filled therein.

5. A thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities according to claim 1 or 4, characterized in that: The ultrasonic transducer array element comprises a matching layer, a piezoelectric layer and an anti-matching layer arranged in sequence from top to bottom; The matching layer is used to improve the transmittance of ultrasonic waves and increase the bandwidth of the ultrasonic transducer, and can be a single-layer structure composed of a single material or a multi-layer structure composed of multiple materials; The piezoelectric layer is used for generating and receiving ultrasonic signals, and the material includes but is not limited to piezoelectric ceramics, piezoelectric single crystals and piezoelectric composite materials; The anti-matching layer comprises a first anti-matching layer and a second anti-matching layer, which are used to improve the reflectivity of the back-directed ultrasonic wave, enhance the power output efficiency and the receiving sensitivity, reduce the heat generation and prolong the service life; the back-directed ultrasonic wave is the ultrasonic wave propagating from the piezoelectric layer to the anti-matching layer; The acoustic impedance of the first anti-matching layer is smaller than the acoustic impedance of the piezoelectric layer, and the thickness thereof is 0.05 to 0.5λ1, where λ1 is the wavelength of the ultrasonic wave in the first anti-matching layer; The acoustic impedance of the second anti-matching layer is greater than the acoustic impedance of the first anti-matching layer, and the thickness thereof is 0.05-0.5λ2, where λ2 is the wavelength of ultrasonic waves in the second anti-matching layer.

6. A thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities according to any one of claims 1 to 5, characterized in that: An acoustic lens is provided between the matching layer and the front-end package for controlling the distribution of the ultrasonic sound field, and its shape includes but is not limited to spherical, ellipsoidal, parabolic, hyperbolic and Fresnel shapes.

7. A thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities according to any one of claims 1 to 6, characterized in that: The connecting circuit is flexible, including but not limited to a flexible printed circuit board, a metal film and a metal wire.

8. A method for operating a thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities, characterized in that: The following steps are involved: S8-1, wearing the wearable ultrasound device on a biological body, wherein the front-end package is in direct contact with the biological body; S8-2, using a low voltage or low duty cycle imaging pulse voltage to excite part or all of the ultrasonic transducer array elements of the ultrasonic transducer array, generating ultrasonic waves that propagate into biological tissues, and then part or all of the ultrasonic transducer array elements of the ultrasonic transducer array receive ultrasonic echo signals to achieve ultrasonic imaging; S8-3, adjusting the position of the wearable ultrasound device according to the ultrasound imaging result so that the action area of ​​the ultrasound wave coincides with the target area; S8-4, using a high voltage or a high duty cycle power output voltage to excite part or all of the ultrasonic transducer array elements of the ultrasonic transducer array to output ultrasonic energy to the target area; S8-5, using the method of step S8-2 to perform ultrasonic imaging, thereby observing the effect of step S8-4 on the target area, and adjusting the parameters of the power output voltage in step S8-4; S8-6. Repeat steps S8-4 to S8-5. During this process, the parameters of the power output voltage described in step S8-4 are continuously adjusted according to the ultrasonic imaging conditions to guide accurate power output until the application requirements are met.

9. The operating method of a thin and light wearable ultrasound device having both imaging and high-efficiency power output capabilities according to claim 8, characterized in that: Each time the method of step S8-2 is used to perform ultrasonic imaging, shape estimation and beam adaptive adjustment of the wearable ultrasonic device are first performed, including the following steps: S9-1, using a low voltage or low duty cycle imaging pulse voltage to excite part or all of the ultrasonic transducer array elements of the ultrasonic transducer array, generating ultrasonic waves that propagate into biological tissues, and then part or all of the ultrasonic transducer array elements of the ultrasonic transducer array receive ultrasonic echo signals; S9-2, performing imaging using the ultrasound echo signal based on the shape estimation parameters of the wearable ultrasound device; S9-3, optimizing shape estimation parameters of the wearable ultrasound device according to the index of the imaging image; S9-4, repeating steps S9-1 to S9-3 until the index of the imaging image meets the requirements, and obtaining the optimized shape estimation parameters of the wearable ultrasound device; S9-5. Control the subsequent excitation voltage delay of the ultrasonic transducer array according to the optimized shape estimation parameters of the wearable ultrasonic device, so that the ultrasonic action area coincides with the target area, thereby realizing beam adaptive adjustment.

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