Ultrasonic acupuncture and moxibustion device based on micro-mechanical ultrasonic transducer and use method of ultrasonic acupuncture and moxibustion device

Abstract

The invention provides an ultrasonic acupuncture device based on a micromechanical ultrasonic transducer and a use method of the ultrasonic acupuncture device, and belongs to the field of ultrasonic acupuncture, a patch is adhered to the surface of a human body through an attaching area and enables an array area to cover acupuncture points, a plurality of piezoelectric units are distributed in the array area, and the piezoelectric units convert electric energy into sound energy; the piezoelectric units are divided into at least two groups, the control part transmits power to the piezoelectric units, adjusts the magnitude and time delay of excitation voltage applied to the piezoelectric units, and simulates the changes of the acupuncture depth, the needle inserting angle and the needle inserting strength during acupuncture on the basis of the phase control focusing theory. According to the acupuncture and moxibustion device, a picture of a user is shot through the recognition mechanism, data analysis is carried out so as to position the acupuncture point position and depth of the user, meanwhile, a phase control method is adopted to control ultrasonic waves emitted by the piezoelectric unit array to achieve change of a focusing point, and therefore precise stimulation and positioning are achieved; the piezoelectric unit is used for detecting the muscle change and the blood flow velocity change of the stimulated part, so that the acupuncture point position positioned by the recognition mechanism is calibrated.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic acupuncture, and in particular to an ultrasonic acupuncture device based on a micromechanical ultrasonic transducer and a method of using the same. Background Art

[0002] Ultrasonic acupuncture is a therapy that uses an ultrasonic generator to generate ultrasonic physical energy and acts on acupuncture points on the human body through a special probe to treat diseases. Compared with traditional acupuncture, ultrasonic acupuncture has the characteristics of no pain, no damage, safe and reliable, high efficacy, easy to learn and use, etc.

[0003] The probe of the ultrasonic acupuncture instrument uses the principle of "inverse piezoelectric effect" to apply a high-frequency electric field to the piezoelectric crystal sheet, causing the latter to vibrate at a corresponding frequency and convert electrical energy into mechanical energy. Although the ultrasonic acupuncture instrument disclosed in Chinese patent CN100584299C uses ultrasound to enhance the acupuncture effect of needle insertion, it still needs to insert the introduction needle into the acupuncture point of the human body, which is difficult and dangerous to operate. Chinese patent CN221787945U discloses an ultrasonic acupuncture belt for body shaping and fat reduction. The acupuncture electrodes are attached to the acupuncture points of the human body, and the corresponding acupuncture points are stimulated by applying a weak current to the abdomen of the human body and combining ultrasound to promote the consumption and discharge of abdominal fat, thereby achieving the purpose of body shaping and fat reduction.

[0004] However, the current ultrasonic acupuncture instruments cannot achieve flexible ultrasonic focusing, so it is technically difficult to accurately stimulate the intensity and depth of human acupuncture points. The location of human acupuncture points is related to each individual's physical conditions such as height and weight. Some current ultrasonic acupuncture instruments can accurately locate the acupuncture points of each user based on individual conditions. However, since the acupuncture points of the human body are generally small, and the intensity and depth requirements of acupuncture at different acupuncture points vary greatly, the focusing method and technology of current ultrasonic acupuncture instruments need to be improved, otherwise it will be difficult to simulate the stimulation of acupuncture points by various needle techniques of acupuncturists. In addition, the shell materials of current ultrasonic acupuncture instruments are mostly metal, and the size is large, making it difficult to achieve portable and wearable functions. Summary of the invention

[0005] In view of this, the present invention proposes an ultrasonic acupuncture device based on a micromechanical ultrasonic transducer and a method of using the same, which is used to solve the problem that the focusing method and technology of the current ultrasonic acupuncture instrument need to be improved, otherwise it is difficult to simulate the stimulation of acupoints by various needle manipulations of acupuncturists.

[0006] The technical solution of the present invention is implemented as follows: the present invention provides an ultrasonic acupuncture device based on a micromechanical ultrasonic transducer, comprising a patch, including an attachment area and an array area embedded in the attachment area; a control unit, electrically connected to the patch; an identification mechanism, identifying the position of acupuncture points of the human body; wherein the patch adheres to the surface of the human body through the attachment area and makes the array area cover the acupuncture points, a plurality of piezoelectric units are arranged in the array area, and the piezoelectric units convert electrical energy into sound energy; the plurality of piezoelectric units are divided into at least two groups, the control unit transmits power to the plurality of piezoelectric units and adjusts the magnitude and delay of the excitation voltage applied to each piezoelectric unit, and simulates the changes in acupuncture depth, needle insertion angle and needle insertion intensity based on the phased focusing theory, and can also be used as a sensor to detect changes in density (or thickness) of muscles (including tendons, ligaments and connective tissues) after ultrasonic stimulation and changes in blood flow rate, and the stimulation position corresponding to the maximum change is the acupuncture point position, thereby assisting the identification system in locating the acupuncture points.

[0007] On the basis of the above technical scheme, preferably, the piezoelectric unit is a multi-layer structure, with the surface of the piezoelectric unit in contact with the human body surface as the inner layer, and the multi-layer structure of the piezoelectric unit is, from the inside to the outside, a packaging layer, a top electrode, a piezoelectric layer, a bottom electrode, a support layer, a substrate and a circuit layer, wherein the packaging layer is made of an insulating material, and the packaging layer is tightly attached to the surface of the human body; the top electrode and the bottom electrode are electrically connected to the circuit layer, and the control unit applies an excitation voltage to the piezoelectric layer through the top electrode and the bottom electrode; the piezoelectric layer converts electrical energy into acoustic energy and emits ultrasonic waves; a cavity is opened in the support layer; and the circuit layer is electrically connected to the control unit.

[0008] More preferably, the thickness of the piezoelectric layer is adjusted or the end face dimensions of the top electrode, the piezoelectric layer and the bottom electrode are adjusted to adjust the frequency of the ultrasonic wave emitted by the piezoelectric unit; the end face dimensions of the piezoelectric units in the same group are the same, and the end face dimensions of the piezoelectric units in different groups are different.

[0009] More preferably, each group of piezoelectric units emits ultrasonic waves at different frequencies, and the control unit regulates each group of piezoelectric units to open and close alternately, thereby simulating the vibration stimulation of acupuncture points.

[0010] More preferably, the control unit adjusts the alternating frequency of each group of piezoelectric units and simulates the speed of vibration stimulation of acupoints during acupuncture.

[0011] More preferably, the increase in the end face size of the piezoelectric unit reduces the ultrasonic frequency of the group of piezoelectric units; the increase in the thickness of the piezoelectric layer reduces the ultrasonic frequency of the group of piezoelectric units.

[0012] More preferably, the total contact area between each group of piezoelectric units and the human body surface is the same.

[0013] More preferably, the center of the piezoelectric layer is the center of the piezoelectric unit.i , the ultrasonic wave is transmitted from the center O of each piezoelectric unit i Based on the phase-controlled focusing theory, the ultrasonic waves generated by each piezoelectric unit are synchronously transmitted to the same focus F; the calculation formula for the phase shift of the ultrasonic waves emitted by each piezoelectric unit is:

[0014]

[0015] Among them, ||O i F|| is O i and F, λ is the wavelength of the ultrasonic wave.

[0016] On the basis of the above technical solution, preferably, the attachment area is made of a flexible hydrophobic material.

[0017] On the other hand, the present invention also provides a method for using an ultrasonic acupuncture device based on a micromechanical ultrasonic transducer, using the above-mentioned ultrasonic acupuncture device based on a micromechanical ultrasonic transducer, including the following steps: step 1, the doctor determines the acupuncture depth, needle insertion angle, needle insertion strength and number of needle insertions during acupuncture according to the actual situation of the human body, and inputs the acupuncture data into the control unit; step 2, adjusting the phase of the excitation voltage applied by the control unit to adjust the acupuncture depth and needle insertion angle, or adjusting the ultrasonic frequency emitted by each group of piezoelectric units to vibrate and stimulate the acupuncture points, or the control unit controls the on-off change of the applied voltage The number of needle insertions; Step 3, the piezoelectric unit detects changes in the muscles (contraction or relaxation, etc.) and blood flow rate of the stimulated part, so as to calibrate the position of the degree point; Step 4, according to the calibrated acupoint position, the phase of the excitation voltage applied by the control unit is adjusted again to adjust the acupuncture depth and the angle of needle insertion, or the ultrasonic frequency emitted by each group of piezoelectric units is adjusted to vibrate and stimulate the acupoint, or the control unit controls the on and off of the applied voltage to change the number of needle insertions; Step 5, complete steps 2, 3, and 4 to end acupuncture, repeat steps 2, 3, and 4 for the next acupuncture, or turn off the device to end acupuncture.

[0018] The ultrasonic acupuncture device based on a micromechanical ultrasonic transducer and the use method thereof of the present invention have the following beneficial effects compared with the prior art:

[0019] (1) The acupuncture device of the present invention takes a photo of the user through an identification mechanism and performs data analysis to locate the position and depth of the user's acupuncture points. In acupuncture, "needle sensation" (or the so-called "qi sensation") refers to the special sensation that occurs at or around the acupuncture site during acupuncture. The generation of needle sensation is closely related to the reaction of the muscles and nervous system inside the human body. When the needle is inserted into the correct position of the acupuncture point, the local neural reflex circuit will be activated, leading to a series of physiological reactions, such as tension or relaxation of muscles (including tendons, ligaments and connective tissues), and changes in local blood flow. The PMUT sensor array can be used to detect changes in muscle density (or thickness) within the ultrasonic stimulation range, and can also detect changes in the velocity of local blood flow, thereby further assisting in locating the position of the acupuncture point. At the same time, a phase-controlled method is used to control the ultrasonic waves emitted by the piezoelectric unit array to achieve changes in the focus, thereby achieving precise stimulation and positioning; the present invention avoids the problems of traditional acupuncture therapy, such as pain, damage, difficulty in learning, and difficulty in achieving family popularization, while improving the accuracy of acupoint positioning and the accuracy of acupoint stimulation of existing ultrasonic acupuncture instruments. Its wearability, small size and easy operability facilitate acupuncture therapy operations for ordinary families.

[0020] (2) The present invention simulates the vibration stimulation of acupuncture points by twisting and other techniques commonly used by acupuncturists by regulating the alternating operation of piezoelectric units of different frequencies and taking advantage of the different penetrating abilities of ultrasound waves of different frequencies; and regulates the phase shift of ultrasound waves emitted by each piezoelectric unit so that the ultrasound waves emitted by each piezoelectric unit are focused on the same focal point, the position of which can be changed, to simulate the depth and intensity differences of acupuncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the ultrasonic acupuncture device of the present invention in use;

[0023] Figure 2 A bottom view of the patch of the present invention;

[0024] Figure 3 is a longitudinal cross-sectional view of a piezoelectric unit of the present invention;

[0025] Figure 4 Schematic diagram of the use method of the ultrasonic acupuncture device of the present invention based on the phased focusing theory, wherein a, b, c, and d are states when the ultrasonic wave is focused at different focal points respectively;

[0026] Figure 5 It is a three-dimensional schematic diagram of the use method of the ultrasonic acupuncture device of the present invention based on the phased focusing theory, wherein a and b are respectively the states when the ultrasonic wave is focused at different focal points;

[0027] Figure 6 It is a schematic diagram of the layout of each group of piezoelectric units in the array area of ​​the present invention;

[0028] Figure 7 It is a schematic diagram of another arrangement method of each group of piezoelectric units in the array area of ​​the present invention;

[0029] Figure 8 It is a schematic diagram of another arrangement mode of each group of piezoelectric units in the array area of ​​the present invention;

[0030] Fig. 9 It is a schematic diagram of another arrangement method of each group of piezoelectric units in the array area of ​​the present invention;

[0031] Fig.10 The schematic diagram of the principle of regulating the ultrasonic intensity in step 2 of the method for using the ultrasonic acupuncture device of the present invention, wherein a is a comparison of the effects of changes in the excitation voltage or power applied to the piezoelectric unit on the ultrasonic intensity, b is a comparison of the effects of changes in the number of piezoelectric units on the ultrasonic intensity, and c is a comparison of the effects of adjusting the pulse width of the piezoelectric unit on the ultrasonic intensity.

[0032] In the figure: 1. patch; 101. attachment area; 102. array area; 10. piezoelectric unit; 11. packaging layer; 12. top electrode; 13. piezoelectric layer; 14. bottom electrode; 15. support layer; 151. cavity; 16. substrate; 17. circuit layer; 2. control unit; 3. identification mechanism. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1 As shown, combined Figure 2 The ultrasonic acupuncture device based on a micromechanical ultrasonic transducer of the present invention comprises

[0035] The patch 1 includes an attachment area 101 and an array area 102 embedded in the attachment area 101. The patch 1 adheres to the surface of the human body through the attachment area 101 and the array area 102 covers the acupuncture points. A plurality of piezoelectric units 10 are arranged in the array area 102, and the piezoelectric units 10 convert electrical energy into sound energy. The patch 1 can be directly attached to the surface of the human body, or the patch 1 can be sewn and embedded into the inner surface of a wearable object, and the wearable object can be a waterproof, comfortable elastic fabric or an adhesive material fixed with a flexible material.

[0036] The control unit 2 is electrically connected to the patch 1. Specifically, the control unit 2 may include a control system. A digital circuit is provided in the control system as a master control system, and an operation panel is provided on the surface of the shell. The digital circuit includes a processing circuit, a microprocessor unit, a wireless and wired communication module, etc. The microprocessor unit can be implemented by any suitable microprocessor such as FPGA (Field Programmable Gate Array, Field Programmable Logic Gate Array); the operation panel has buttons for information input, a power on / off switch and a display screen, and the display screen can simulate and display the distribution of acupuncture points of the human body. The camera device is operated in the control unit 2 to shoot the user's whole body from multiple angles, and the image information is transmitted to the control unit 2 for processing. At present, after comparing and calculating the data in the database using an algorithm in the control unit 2, the user's accurate acupuncture point location and acupuncture point depth information is generated. This technology has basically matured, and its role is to assist acupuncturists or other users in determining the acupuncture point location and acupuncture point depth. Through the acupoint location and acupoint depth information, the control unit 2 can generate an ultrasonic focusing indication signal, and can update the focusing indication signal according to the acupuncture method required for the acupoint, including information such as focusing angle, focusing depth and focusing position, and use this information to calculate the size and delay of the excitation voltage that should be applied to each piezoelectric unit.

[0037] The plurality of piezoelectric units 10 are divided into at least two groups. The control unit 2 transmits power to the plurality of piezoelectric units 10 and adjusts the magnitude and time delay of the excitation voltage applied to each piezoelectric unit 10, and simulates the changes in the acupuncture depth and the angle of insertion based on the phase-controlled focusing theory. Specifically, the piezoelectric unit 10 is a piezoelectric micromechanical ultrasonic transducer (PMUT). The working principle of the PMUT is based on the piezoelectric effect, that is, when a voltage is applied to the piezoelectric material, it causes mechanical vibration and generates ultrasonic waves. By regulating the magnitude of the excitation voltage applied to the piezoelectric unit 10, a certain number of piezoelectric units 10 can emit ultrasonic waves focused on the same focus, thereby controlling the strength of acupuncture; and changing the time delay will change the position of the focus, thereby changing the depth and angle of insertion.

[0038] The identification mechanism 3 identifies the position of the acupuncture points of the human body; the identification mechanism 3 is a camera device, such as a camera, and its function is to obtain multi-angle images of the user's whole body so that the control unit 2 can identify the acupuncture points through an algorithm.

[0039] In addition, the ultrasonic acupuncture device in this embodiment is operated by the control unit 2 in a wired form, but can also be controlled wirelessly, for example, by installing an APP in a mobile phone, tablet or sports bracelet for operation, and the control unit 2 and the matrix of the piezoelectric unit 10 are connected via wireless communication.

[0040] exist Figure 3 In a preferred embodiment shown, the piezoelectric unit 10 is a multi-layer structure, which can be a single-chip or double-chip structure; the surface of the piezoelectric unit 10 that contacts the surface of the human body is the inner layer, and the multi-layer structure of the piezoelectric unit 10 is, from the inside to the outside, a packaging layer 11, a top electrode 12, a piezoelectric layer 13, a bottom electrode 14, a support layer 15, a substrate 16 and a circuit layer 17.

[0041] Among them, the encapsulation layer 11 is made of insulating material, and the encapsulation layer 11 is closely attached to the surface of the human body. Specifically, it can be made of flexible hydrophobic materials such as TPU and PDMS (polydimethylsiloxane). TPU (Thermoplastic Polyurethane) is a common high-performance plastic material with excellent mechanical properties, wear resistance, oil resistance, chemical corrosion resistance, elasticity and transparency. PDMS (Polydimethylsiloxane) is a silicon-based polymer and belongs to the class of organic silicon compounds. Its structure consists of a main chain composed of alternating silicon (Si) and oxygen (O) atoms, and organic groups such as methyl (-CH3) are connected to the silicon atoms. It has many excellent properties, such as high transparency, good biocompatibility, chemical stability and high temperature resistance.

[0042] The top electrode 12 and the bottom electrode 14 are electrically connected to the circuit layer 17, and the control unit 2 applies an excitation voltage to the piezoelectric layer 13 through the top electrode 12 and the bottom electrode 14. The electrodes are made of materials such as molybdenum and aluminum, and their sizes can be adjusted according to the actual required ultrasonic frequency.

[0043] The piezoelectric layer 13 converts electrical energy into acoustic energy and emits ultrasonic waves. The piezoelectric layer 13 is made of piezoelectric materials such as aluminum nitride, scandium-doped aluminum nitride, lead zirconate titanate, polyvinylidene fluoride, lithium niobate, lithium tantalate, lead manganese titanate-lead titanate composite ceramics, and its thickness can be adjusted according to the actual ultrasonic frequency required.

[0044] The material of the substrate 16 is organic matter with high hardness, such as silicon, PDMS, polytetrafluoroethylene (PTFE), etc.

[0045] The support layer 15 is an SOI substrate, and a circuit layer 17 is etched on its surface; a cavity 151 is provided inside the support layer 15, and the cavity can be filled with a matching layer or a coupling agent, and the matching layer or the coupling agent material is PDMS, a composite material, and the like.

[0046] The circuit layer 17 is electrically connected to the control unit 2. The circuit layer 17 is a CMOS circuit (complementary metal oxide semiconductor circuit), which includes a memory, a microprocessor, and a data transmission circuit, receives the excitation voltage control signal output by the control unit 2, and controls the excitation voltage of each piezoelectric unit 10 according to the signal. The piezoelectric layer 13 using the PMUT sensor principle is compatible with the circuit layer 17 using the CMOS micro-nano process, forming a device-package-circuit integrated structure, which can significantly reduce the module volume of the piezoelectric unit 10.

[0047] exist Figure 3 In a preferred embodiment shown in the figure, the thickness of the piezoelectric layer 13 is adjusted or the end face dimensions of the top electrode 12, the piezoelectric layer 13 and the bottom electrode 14 are adjusted to adjust the frequency of the ultrasonic wave emitted by the piezoelectric unit 10; the end face dimensions of the piezoelectric units 10 in the same group are the same, and the end face dimensions of the piezoelectric units 10 in different groups are different, so that the control unit 2 can choose to excite the piezoelectric units 10 with high and low frequencies, thereby realizing the adjustment of the acupuncture force and the vibration stimulation of the acupuncture points by twisting and other techniques commonly used by acupuncturists.

[0048] exist Figure 1 In a preferred embodiment shown, the ultrasonic waves emitted by each group of piezoelectric units 10 have different frequencies. The control unit 2 regulates the groups of piezoelectric units 10 to open and close alternately, and simulates the vibration stimulation of the acupoints during acupuncture. The principle is that the ultrasonic waves emitted by the array groups of piezoelectric units 10 of different frequencies to the acupoints have different wavelengths, and ultrasonic waves of different wavelengths have different penetration in the skin. The higher the frequency of the ultrasonic wave, the lower the penetration in the skin, thereby producing alternating stimulation to the acupoints, thereby simulating the vibration stimulation of acupuncture.

[0049] exist Figure 1 In a preferred embodiment shown, the control unit 2 regulates the alternating frequency of each group of piezoelectric units 10 and simulates the speed of vibration stimulation of acupoints during acupuncture; the more frequent the frequency, the faster the vibration stimulation, and the looser the frequency, the slower the vibration stimulation, thereby being able to meet different acupuncture needs.

[0050] exist Figure 6In a preferred embodiment shown, an increase in the end face size of the piezoelectric unit 10 reduces the ultrasonic frequency of the group of piezoelectric units 10. The principle is that the larger the size of the piezoelectric layer 13, the smaller the bending rigidity, and therefore the smaller the generated ultrasonic frequency, and vice versa; an increase in the thickness of the piezoelectric layer 13 reduces the ultrasonic frequency of the group of piezoelectric units 10. The principle is that the thicker the piezoelectric layer 13, the increased bending rigidity of the diaphragm, and the smaller the deformation due to the piezoelectric effect, and therefore the smaller the generated ultrasonic frequency, and vice versa.

[0051] exist Figure 6 or Figure 7 or Figure 8 or Fig. 9 In a preferred embodiment shown, the total area of ​​each group of piezoelectric units 10 in contact with the human body surface is the same, so that each group of piezoelectric unit 10 arrays can have a sufficient stimulation effect on the acupoints. Each piezoelectric unit 10 array group can adopt different implementations: for example Figure 6 As shown, the array groups of piezoelectric units 10 are in a ring structure that is sequentially arranged from the inside to the outside; Figure 7 As shown, the array area 102 is equally divided into a number of vertical strip areas, and each piezoelectric unit 10 array group is arranged in a one-to-one correspondence in each vertical strip area: For example, Figure 8 , the array area 102 is equally divided into four quadrants, and array groups of piezoelectric units 10 with different frequencies and sizes are respectively arranged in the four quadrants; for example, Fig. 9 , a plurality of piezoelectric units 10 form a column, and the piezoelectric units 10 in different columns belonging to different groups are arranged alternately.

[0052] exist Figure 4 and Figure 5 In a preferred embodiment shown in FIG. 1 , the center of the piezoelectric layer 13 is the center of the piezoelectric unit 10. i The ultrasonic wave is transmitted from the center O of each piezoelectric unit 10. i Based on the phased focusing theory, the ultrasonic waves generated by each piezoelectric unit 10 are synchronously transmitted to the same focus F; the calculation formula for the phase shift of the ultrasonic waves emitted by each piezoelectric unit 10 is,

[0053]

[0054] Among them, ||O i F|| is O i and F, λ is the wavelength of the ultrasonic wave, and the wavelength of the ultrasonic wave with the same frequency is also the same. iThe position is fixed, the wavelength λ of the ultrasonic wave is adjustable, and the focus F is the position where the operator wants the ultrasonic wave generated by each group of piezoelectric units 10 to focus. The focus position (i.e., the focus F) can also be preset. Therefore, the phase shift required by each piezoelectric unit 10 can be calculated by the above calculation formula, and then the excitation voltage applied to each piezoelectric unit 10 can be adjusted by the control unit 2. Figure 5 For example, phased array focusing can not only achieve lateral focusing, but also longitudinal focusing; the phased array can achieve focusing in three axes, XYZ.

[0055] exist Figure 2 In a preferred embodiment shown, the attachment area 101 is made of a flexible hydrophobic material, specifically a flexible hydrophobic material such as TPU and PDMS (polydimethylsiloxane).

[0056] like Figure 1 As shown, combined Fig.10 The present invention provides a method for using an ultrasonic acupuncture device based on a micromechanical ultrasonic transducer, which adopts an ultrasonic acupuncture device based on a micromechanical ultrasonic transducer of any of the above embodiments, and includes the following steps.

[0057] Step 1: The doctor determines the acupuncture depth, needle insertion angle, needle insertion strength and number of needle insertions according to the actual human body conditions, and inputs the acupuncture data into the control unit 2.

[0058] Step 2: adjust the phase of the excitation voltage applied by the control unit 2 to adjust the acupuncture depth and the angle of the needle, or adjust the ultrasonic frequency emitted by each group of piezoelectric units 10 to vibrate and stimulate the acupoints, or the control unit 2 controls the on and off of the applied voltage to change the number of needle insertions. Fig.10 As shown, taking Figure a as an example, when the excitation voltage or power applied to the piezoelectric unit 10 is adjusted, the greater the excitation voltage or power, the stronger the ultrasonic intensity; taking Figure b as an example, when the number of piezoelectric units 10 is adjusted, the more piezoelectric units 10 are, the stronger the ultrasonic intensity; taking Figure c as an example, when the pulse width of the piezoelectric unit 10 is adjusted, the pulse width (i.e., the time window) of the piezoelectric unit 10 can be increased by adjusting the time window of the excitation voltage, so that the more energy it emits, the piezoelectric unit 10 can output sound wave energy for a longer time in the same time, that is, the ultrasonic intensity is stronger.

[0059] Step 3, complete step 2 to end one acupuncture, repeat step 2 to perform the next acupuncture, or turn off the device to end the acupuncture.

[0060] For example, the PMUT acupuncture patch 1 can transmit data wirelessly with a mobile phone, tablet or sports bracelet. After confirming the focal position, focal depth, focal position of the ultrasound, as well as the stimulation intensity, vibration frequency and stimulation time of the ultrasound, the information is used to calculate the magnitude and delay of the excitation voltage to be applied to each PMUT piezoelectric unit 10. The relevant APP sends instructions to the PMUT acupuncture patch 1, and the PMUT acupuncture patch can be attached to the acupuncture point for stimulation. Because flexible hydrophobic packaging materials such as PDMS are skin-friendly and waterproof, they can better fit the skin and avoid the disadvantage that traditional intradermal needles need to avoid water.

[0061] For another example, an acupuncturist or other user operates the camera device in the control unit 2 to shoot the user's whole body from multiple angles, and the image information is transmitted to the control unit 2 for processing. After comparing and calculating the data in the database using an algorithm in the control unit 2, the user's accurate acupoint location and acupoint depth information is generated to assist the acupuncturist or other user in determining the acupoint location and acupoint depth. Through the acupoint location and acupoint depth information, the control unit 2 can generate a focus indication signal and can update the focus indication signal according to the acupuncture method required by the acupoint, including information such as the focus angle, focus depth and focus position, and use this information to calculate the magnitude and delay of the excitation voltage to be applied to each PMUT piezoelectric unit 10. The acupuncturist or other user can adjust the magnitude of the excitation voltage and the ultrasonic focus position by operating the control button on the control unit 2, and can choose to excite the PMUT device of high frequency and low frequency, thereby achieving the adjustment of acupuncture intensity and the vibration stimulation of the acupoint by the twisting technique commonly used by acupuncturists.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultrasonic acupuncture device based on a micromechanical ultrasonic transducer, characterized in that: include: The patch (1) comprises an attachment area (101) and an array area (102) embedded in the attachment area (101); A control unit (2) electrically connected to the patch (1); An identification mechanism (3) for identifying the location of acupuncture points on the human body; The patch (1) is adhered to the human body surface through the attachment area (101) and the array area (102) covers the acupuncture points. A plurality of piezoelectric units (10) are arranged in the array area (102). The piezoelectric units (10) convert electrical energy into acoustic energy. The plurality of piezoelectric units (10) are divided into at least two groups, the control unit (2) transmits power to the plurality of piezoelectric units (10) and adjusts the magnitude and time delay of the excitation voltage applied to each piezoelectric unit (10), and simulates the changes in the acupuncture depth, the needle insertion angle, and the needle insertion intensity during acupuncture based on the phase-controlled focusing theory.

2. The ultrasonic acupuncture device based on a micromechanical ultrasonic transducer according to claim 1, characterized in that: The piezoelectric unit (10) is a multi-layer structure, with the surface of the piezoelectric unit (10) in contact with the surface of the human body as the inner layer, and the multi-layer structure of the piezoelectric unit (10) is, from the inside to the outside, a packaging layer (11), a top electrode (12), a piezoelectric layer (13), a bottom electrode (14), a support layer (15), a substrate (16) and a circuit layer (17), The encapsulation layer (11) is made of insulating material, and the encapsulation layer (11) is closely attached to the surface of the human body; The top electrode (12) and the bottom electrode (14) are electrically connected to the circuit layer (17), and the control unit (2) applies an excitation voltage to the piezoelectric layer (13) through the top electrode (12) and the bottom electrode (14); The piezoelectric layer (13) converts electrical energy into acoustic energy and emits ultrasonic waves; The support layer (15) is provided with a cavity (151); The circuit layer (17) is electrically connected to the control unit (2).

3. The ultrasonic acupuncture device based on a micromechanical ultrasonic transducer according to claim 2, characterized in that: Adjusting the thickness of the piezoelectric layer (13) or adjusting the end surface dimensions of the top electrode (12), the piezoelectric layer (13) and the bottom electrode (14) to adjust the frequency of the ultrasonic wave emitted by the piezoelectric unit (10); The end surface dimensions of the piezoelectric units (10) in the same group are the same, and the end surface dimensions of the piezoelectric units (10) in different groups are different.

4. The ultrasonic acupuncture device based on a micromechanical ultrasonic transducer according to claim 3, characterized in that: The ultrasonic waves emitted by each group of piezoelectric units (10) have different frequencies, and the control unit (2) regulates each group of piezoelectric units (10) to be turned on and off alternately, thereby simulating the vibration stimulation of acupuncture points.

5. The ultrasonic acupuncture device based on a micromechanical ultrasonic transducer according to claim 4, characterized in that: The control unit (2) regulates the alternating frequency of each group of piezoelectric units (10) and simulates the speed of vibration stimulation of acupoints during acupuncture.

6. The ultrasonic acupuncture device based on a micromechanical ultrasonic transducer according to claim 3, characterized in that: The increase in the end face size of the piezoelectric unit (10) reduces the ultrasonic frequency of the group of piezoelectric units (10), and the increase in the thickness of the piezoelectric layer (13) reduces the ultrasonic frequency of the group of piezoelectric units (10).

7. The ultrasonic acupuncture device based on a micromechanical ultrasonic transducer according to claim 3, characterized in that: The total area of ​​each group of piezoelectric units (10) in contact with the surface of the human body is the same.

8. The ultrasonic acupuncture device based on a micromechanical ultrasonic transducer according to claim 2, characterized in that: The center of the piezoelectric layer (13) is the center of the piezoelectric unit (10). i The ultrasonic wave is transmitted from the center O of each of the piezoelectric units (10) i Based on the phase-controlled focusing theory, the ultrasonic waves generated by each piezoelectric unit (10) are synchronously transmitted to the same focus F; the calculation formula for the phase shift of the ultrasonic waves emitted by each piezoelectric unit (10) is: Among them, ||O i F|| is O i and F, λ is the wavelength of the ultrasonic wave.

9. The ultrasonic acupuncture device based on a micromechanical ultrasonic transducer according to claim 1, characterized in that: The attachment area (101) is made of a flexible hydrophobic material.

10. A method for using an ultrasonic acupuncture device based on a micromechanical ultrasonic transducer, characterized in that: An ultrasonic acupuncture device based on a micromechanical ultrasonic transducer according to any one of claims 1 to 9 comprises the following steps: Step 1: The doctor determines the acupuncture depth, the needle insertion angle, the number of needle insertions and the needle insertion intensity according to the actual conditions of the human body, and inputs the acupuncture data into the control unit (2); Step 2: regulating the phase of the excitation voltage applied by the control unit (2) to adjust the acupuncture depth, the angle of needle insertion and the strength of needle insertion, or adjusting the frequency of the ultrasonic waves emitted by each group of the piezoelectric units (10) to vibrate and stimulate the acupuncture points, or the control unit (2) controls the on and off of the applied voltage to change the number of needle insertions; Step three, completing step two to end one acupuncture treatment, repeating step two to perform the next acupuncture treatment, or closing the device to end the acupuncture treatment.

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