Fresnel spiral acoustic lens and method for realizing non-invasive acoustic rotation ultrasonic acupuncture

Abstract

The application discloses a Fresnel spiral acoustic lens and a method for realizing non-invasive acoustic twist ultrasonic acupuncture, and belongs to the field of ultrasonic treatment equipment. The Fresnel spiral acoustic lens is composed of a group of spiral structures with gaps, only includes oppositely arranged incident surfaces and exit surfaces, and the surface opposite to the emitting end of an ultrasonic transducer is the incident surface, which is used for ensuring that the plane acoustic wave emitted by the ultrasonic transducer is vertically incident; and the exit surface is a spiral phase modulation surface of the emitted acoustic wave. The ultrasonic acupuncture instrument made of the acoustic lens comprises the ultrasonic transducer, the Fresnel spiral acoustic lens, a focusing acoustic lens and a rotating disc. The ultrasonic acupuncture instrument further comprises a pulse emission receiver, a micro stepping motor, a rotating shaft and a real-time monitoring device. Through the phase modulation effect of the Fresnel spiral acoustic lens on the incident acoustic wave, the focusing vortex acoustic field with an orbital angular momentum is generated, non-contact non-invasive dynamic twist stimulation on the acupoint of the human body is realized, and the application has the advantages of simple structure, convenient control, accurate focusing, high safety and the like.

Description

Technical Field

[0001] This invention relates to a Fresnel spiral acoustic lens and a method for achieving non-invasive acoustic twisting ultrasonic acupuncture, belonging to the technical field of ultrasonic therapy equipment. Background Technology

[0002] Acupuncture is a traditional and distinctive treatment method in Traditional Chinese Medicine (TCM). Its core principle lies in regulating the flow of Qi and blood in the meridians by applying external mechanical stimulation such as needling and twisting to specific acupoints, thereby improving the body's physiological functions and treating various ailments such as chronic pain, arthritis, and endocrine disorders. It has demonstrated significant efficacy in clinical medicine. However, traditional acupuncture treatments involve invasive needling, inevitably causing pain for patients and posing a potential risk of cross-infection. Furthermore, its effectiveness is highly dependent on the physician's experience, making standardized promotion difficult. These inherent limitations restrict the widespread application of acupuncture in general healthcare. To address these issues, developing non-invasive, precise, and standardized alternatives to acupuncture has become a research hotspot. Ultrasound technology, with its unique advantages such as non-contact application, penetration of biological soft tissue, no ionizing radiation, and good energy focusing, is widely used in non-invasive medical fields. Ultrasound-based non-invasive acupuncture solutions offer a new research approach to solving this problem.

[0003] Existing ultrasonic acupuncture techniques can be mainly divided into two categories based on their primary mechanisms of action: thermal effect ultrasonic acupuncture and pressure-type ultrasonic acupuncture. Thermal effect ultrasonic acupuncture emits ultrasound waves to acupoints through an ultrasonic transducer. As the ultrasound waves propagate within biological tissues, their sound energy gradually attenuates, converting this energy into heat energy that raises the local tissue temperature, thus simulating the warming stimulation effect of moxibustion. However, this type of technology can only achieve a single warming stimulation and cannot simulate the mechanical twisting in traditional acupuncture, resulting in a certain gap between the therapeutic effect and expectations. Pressure-type ultrasonic acupuncture often uses spherical focusing transducers or concave piezoelectric transducers (Wang Hua, Zeng Deping. A design of an ultrasonic acupuncture transducer [J]. Piezoelectricity and Acousto-optics, 2013, 35(04): 533-535+539.), which focus ultrasonic energy onto human acupoint tissues and use the high sound pressure formed by focusing to generate static pressure stimulation. Although this technology has achieved a breakthrough in mechanical stimulation, the sound field formed by focusing is a static point distribution, which can only realize point-press stimulation and cannot simulate twisting action. It is difficult to achieve dynamic mechanical control of acupoint tissues. At the same time, problems such as structural design, degree of control and focusing accuracy will also be faced in the manufacturing process. Furthermore, although a dynamic sound field can be constructed by working in concert with multiple transducer arrays (Liu Xiaoxiao, Wang Huan, Liu Chunze, et al. Study on phased array sound field and control mode of ultrasonic acupuncture [J]. Acoustics Technology, 2020, 39(02): 184-189.), such methods have complex structural designs, are difficult to control synchronously with multiple channels, have limited focusing accuracy, and are inefficient, making it difficult to meet the requirements of precision and practicality in acupuncture.

[0004] In traditional acupuncture, the twisting motion is a key therapeutic element, known as "deqi" (obtaining qi). The core of this technique lies in the dynamic mechanical stimulation of the meridians surrounding the acupoints caused by the twisting motion. This effectively stimulates the regulatory responses of the meridians, accelerates local blood and qi circulation, and has a good therapeutic effect on various ailments caused by qi stagnation and blood stasis. It also helps the needle sensation penetrate deeper tissues. Therefore, how to achieve a non-invasive and precise simulation of the twisting mechanical stimulation of traditional acupuncture has become a pressing technical bottleneck that ultrasonic acupuncture needs to overcome.

[0005] This invention aims to provide an ultrasonic acupuncture method based on a Fresnel spiral focusing acoustic lens. By designing a special acoustic lens structure to regulate the phase distribution of the ultrasonic sound field, a focused sound field with rotational characteristics is generated, which accurately simulates the twisting motion of traditional acupuncture, so as to achieve non-invasive and precise acupuncture treatment, improve the treatment effect, and promote the clinical application of non-invasive acupuncture technology. Summary of the Invention

[0006] To address the shortcomings of existing ultrasonic acupuncture methods, which only provide single thermal stimulation and static pressure stimulation, the present invention aims to provide a Fresnel spiral acoustic lens and a method for achieving non-invasive ultrasonic twisting acupuncture. By modulating the phase of the incident sound wave through the Fresnel spiral acoustic lens, a focused vortex sound field with orbital angular momentum is generated, realizing non-contact, non-invasive dynamic twisting stimulation of acupoints on the human body. It also has the advantages of simple structure, convenient control, precise focusing, and high safety.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The present invention discloses a Fresnel spiral acoustic lens, which consists of a set of spiral structures with gaps, including only an incident surface and an exit surface arranged opposite each other. The surface facing the transmitting end of the ultrasonic transducer is the incident surface, which is used to ensure that the planar sound wave emitted by the ultrasonic transducer is perpendicular to the incident surface; the exit surface is the spiral phase modulation surface of the exit sound wave.

[0009] The Fresnel spiral acoustic lens is coaxially mounted on the acoustic emission end of the ultrasonic transducer. The Fresnel spiral acoustic lens and the ultrasonic transducer are fixed by 3D-printed connectors to ensure the coaxiality of the ultrasonic propagation path.

[0010] The spiral curve of the spiral structure It is given by the following formula:

[0011]

[0012] Where r is the radial distance from the point to the central axis of the Fresnel spiral acoustic lens. Where is the circumferential angle, and F is the focal length of the acoustic lens. For the wavelength of sound, It is the radius of the opaque region at the center of the acoustic lens;

[0013] Through phase modulation of the spiral structure, the phase of the incident sound wave after passing through the lens is spirally distributed along the circumference, thus forming a vortex sound wave with orbital angular momentum, which provides a basis for subsequent acoustic twisting stimulation.

[0014] An ultrasonic acupuncture device using the aforementioned acoustic lens includes an ultrasonic transducer, a Fresnel spiral acoustic lens, a focusing acoustic lens, and a rotating disk. The ultrasonic transducer emits a planar sound field. The rotating disk has two lens mounting bases for mounting the Fresnel spiral acoustic lens and the focusing acoustic lens. The working state of the ultrasonic acupuncture device is switched by rotating the disk. When the Fresnel spiral acoustic lens is in working state, it emits a spiral focused sound field to simulate the twisting effect of acupuncture. When the focusing acoustic lens is in working state, it emits a static focused sound field to simulate the needle retention effect of acupuncture.

[0015] The Fresnel spiral acoustic lens has a focal length of 50mm, a diameter not exceeding 70mm, and a thickness of 2mm; it is compatible with an ultrasonic transducer operating at 500kHz and has a diameter of 70mm; the lens is made of laser-cut stainless steel, forming a total of 5 turns of Fresnel spiral acoustic lens; the stainless steel has a sound velocity of 5790m / s and a density of 7480kg / m³. 3 .

[0016] The focusing acoustic lens has a focal length of 50mm and a diameter of 70mm to match the ultrasonic transducer. It is suitable for ultrasonic operating frequencies of 500kHz. The focused acoustic pressure field is a static point distribution with no rotational characteristics.

[0017] The ultrasonic acupuncture device also includes a pulse transmitter and receiver, a micro stepper motor, a rotating shaft, and a real-time monitoring device. The pulse transmitter and receiver is used to provide an adjustable frequency and adjustable amplitude electrical signal to the ultrasonic transducer. The micro stepper motor is used to drive lens switching. The rotating shaft is used to connect the micro stepper motor and the rotating disk. The real-time monitoring device includes a temperature sensor and a sound intensity sensor, which are used to collect tissue temperature and sound intensity data of the acupoint area in real time to avoid tissue damage.

[0018] The method of achieving non-invasive acoustic twisting ultrasonic acupuncture using the aforementioned acupuncture instrument utilizes an adjustable frequency and amplitude electrical signal output by a pulse transmitter receiver to drive an ultrasonic transducer to emit planar ultrasonic waves. Through a lens switching mechanism consisting of a micro stepper motor, a rotating shaft, and a rotating disk, the Fresnel spiral acoustic lens and the focusing acoustic lens mounted on the rotating disk are alternately rotated to the coaxial working position of the ultrasonic transducer's acoustic emission end, achieving seamless switching between a spiral focused sound field and a pure focused sound field. This simulates the stimulation effect of intermittent twisting and needle retention during acupuncture, thus realizing non-invasive acoustic twisting ultrasonic acupuncture. Simultaneously, a real-time monitoring device collects tissue temperature and sound intensity data of the acupoint area throughout the process, thereby providing feedback to adjust the intensity of the driving signal.

[0019] Beneficial effects:

[0020] 1. Achieving non-invasive acoustic twisting technology: This invention applies Fresnel spiral acoustic lenses to the field of ultrasonic acupuncture. By generating a focused vortex sound field through spiral phase modulation, it accurately simulates the twisting action of traditional acupuncture. Through the alternating mode of "short-time twisting to obtain qi + long-time static needle retention", it restores the treatment rhythm of traditional acupuncture, making the treatment effect of ultrasonic acupuncture closer to that of traditional invasive acupuncture.

[0021] 2. Simple structure and controllable cost: The Fresnel spiral acoustic lens is an integrated spiral structure with no complex components. During assembly, it is only necessary to fix the lens mounting base coaxially with the ultrasonic transducer, resulting in low manufacturing cost.

[0022] 3. Precise focusing and strong targeting: The Fresnel spiral acoustic lens combines the high focusing characteristics of a focusing acoustic lens with the phase modulation characteristics of a spiral structure. The focal point size can be controlled within 1-3mm, which can accurately match the scale requirements of tiny acupoints in the human body, avoid non-targeted stimulation of surrounding normal tissues, and improve the safety and effectiveness of treatment.

[0023] 4. Convenient control and high degree of standardization: The amplitude, frequency and duty cycle of the emitted sound field can be adjusted by operating the pulse transmitter and receiver, which can match different treatment needs and standardize the operation process.

[0024] 5. Non-invasive and safe: The entire treatment process is non-contact and requires no needles, eliminating the risk of cross-infection; at the same time, real-time temperature and sound intensity monitoring can strictly control the stimulation dosage, avoiding tissue thermal or mechanical damage.

[0025] 6. Wide adaptability and flexible clinical scenarios: The focal length, aperture and other parameters of Fresnel spiral acoustic lenses and focusing acoustic lenses can be flexibly adjusted according to different acupoint depths (such as epidermal acupoints and deep muscle acupoints), which can be adapted to the wide frequency range of ultrasound transducers, meet the personalized treatment needs of different diseases and patients, and make the clinical application scenarios more extensive.

[0026] 7. Easy maintenance and strong compatibility: The lens mounting base on the rotating disk fixes the Fresnel spiral acoustic lens and the focusing acoustic lens, which can be coaxially connected with the ultrasonic transducer and has no easily worn parts. Attached Figure Description

[0027] Figure 1 The diagram illustrates a Fresnel spiral acoustic lens and its device for achieving non-invasive ultrasonic twisting acupuncture, as shown in an embodiment of the present invention.

[0028] Figure 2 This is a three-dimensional structural schematic diagram of a Fresnel spiral acoustic lens according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram illustrating the principle of how a Fresnel spiral acoustic lens forms a vortex acoustic field from an incident plane sound wave, as shown in an embodiment of the present invention.

[0030] Figure 4 This is a sound field sound pressure focusing test diagram at the focal plane of a Fresnel spiral acoustic lens, as shown in an embodiment of the present invention;

[0031] Figure 5 This is a test diagram of the sound field phase spiral at the focal plane of a Fresnel spiral acoustic lens, as shown in an embodiment of the present invention.

[0032] Figure 6 The flowchart illustrates a Fresnel spiral acoustic lens and its method for achieving non-invasive acoustic twisting ultrasonic acupuncture, as shown in an embodiment of the present invention.

[0033] Among them, 1—pulse transmitter and receiver, 2—ultrasonic transducer, 3—plane wave ultrasonic field, 4—rotating disk, 5—Fresnel spiral acoustic lens, 6—focusing acoustic lens, 7—focusing vortex ultrasonic field, 8—rotating shaft, 9—micro stepper motor, 10—real-time monitoring equipment, 11—temperature sensor, 12—sound intensity sensor. Detailed Implementation

[0034] As described in the background section, existing technologies such as thermal-effect ultrasonic acupuncture can only provide single-mode thermal stimulation, while pressure-effect ultrasonic acupuncture can only provide static compression stimulation. Multi-transducer array solutions suffer from drawbacks such as complex structure, difficulty in control, and low focusing accuracy. Therefore, this invention provides a non-invasive acoustic twisting ultrasonic acupuncture method based on a Fresnel spiral acoustic lens. By utilizing the focusing characteristics of the Fresnel acoustic lens and combining it with an improved spiral grating, it can convert planar sound waves into vortex sound fields, thereby achieving non-invasive acoustic twisting stimulation of acupoints and accurately simulating the twisting motion and stimulation effect of traditional acupuncture.

[0035] The following detailed description, with reference to the accompanying drawings, uses non-invasive ultrasonic acupuncture treatment at the Zusanli acupoint as a specific application scenario to illustrate the implementation of this invention. This embodiment aims to clearly demonstrate how the technical solution of this invention can be implemented through specific parameters and operable steps.

[0036] Figure 1 This is a structural diagram of a non-invasive ultrasonic acupuncture device based on a Fresnel spiral acoustic lens, as shown in an embodiment of the present invention; Figure 1 As shown, the non-invasive ultrasonic acupuncture includes a pulse transmitter receiver 1, an ultrasonic transducer 2, a rotating disk 4, a Fresnel spiral acoustic lens 5, a focusing acoustic lens 6, a rotating shaft 8, a micro stepper motor 9, and a real-time monitoring device 10 attached to the skin surface near the Zusanli acupoint on the human body.

[0037] The ultrasonic transducer 2 converts the electrical signal output from the pulse transmitter receiver 1 into mechanical vibrations with a specific frequency and intensity, i.e., ultrasonic waves, and emits these ultrasonic waves in the form of plane waves. The Fresnel spiral acoustic lens 5 has the following structure... Figure 2 As shown, phase modulation is applied to a planar ultrasonic wave. Sound waves at different positions experience different phase delays as they pass through the helical structure, thus forming a focused vortex sound field, as shown... Figure 3 As shown, the sound pressure and phase distribution it generates at the focal plane are as follows: Figure 4 , 5As shown. The focusing acoustic lens 6 is used to focus planar ultrasound waves into a static focused sound field, simulating the needle retention effect of traditional acupuncture. The rotating disk 4 is used to mount and fix the Fresnel spiral acoustic lens and the focusing acoustic lens. The rotating shaft 8 is used to connect the micro stepper motor and the rotating disk. The micro stepper motor 9 is used to receive preset control commands to drive the rotating shaft to rotate, thereby realizing the switching of the two working states of the acoustic lenses on the rotating disk: when the Fresnel spiral acoustic lens is working, it emits a vortex focused ultrasound field to simulate dynamic acoustic twisting stimulation; when the focusing acoustic lens is working, it emits a focused ultrasound field to simulate static focused stimulation. The acoustic lens and the acoustic axis of the ultrasound transducer are coaxial when in working state. The real-time monitoring device 10 is used to collect and monitor the physiological parameters of the acupoint area, including a temperature sensor 11 and a sound intensity sensor 12. When ultrasound propagates in biological tissue, it will generate a certain thermal effect due to energy absorption. Although this invention is mainly based on mechanical stimulation, it is still necessary to strictly control the temperature to avoid tissue overheating.

[0038] Figure 6 This is a flowchart illustrating a non-invasive acoustic twisting ultrasonic acupuncture method based on a Fresnel spiral acoustic lens, as shown in an embodiment of the present invention. When using the non-invasive acoustic twisting ultrasonic acupuncture device described in this embodiment, the following steps can be performed:

[0039] The signal-driven module is used to transmit electrical pulses;

[0040] A planar ultrasonic wave is emitted using a sound wave conversion module, and after modulation, it achieves alternating stimulation of vortex focusing and pure focusing ultrasonic fields;

[0041] A real-time monitoring module is used to assist in the collection of treatment data, and the magnitude of the drive signal is adjusted based on the data feedback.

[0042] Specifically, a non-invasive ultrasonic acupuncture method based on a Fresnel spiral acoustic lens is implemented through the following steps:

[0043] Step 1: The user straightens both legs and relaxes the muscles, exposing the Zusanli acupoint area below the right knee joint (3 inches below the outer knee eye, one finger-width lateral to the tibia). Wipe the skin of the acupoint area with a medical alcohol swab to remove oil, sweat and dirt. After the alcohol evaporates naturally, the device can be used for ultrasonic acupuncture.

[0044] Step 2: Activate the pulse transmitter receiver 1 and the real-time monitoring device 10. Attach the real-time monitoring device 10 to the skin surface next to the acupoint and set the real-time monitoring alarm thresholds: when the temperature is ≥47℃, trigger the power supply to reduce power by 50%; when the sound intensity is ≥1.5W / cm². 2The power supply will be automatically stopped upon activation. Adjust the position and angle of the emitted sound wave surface so that the sound axis of the emitted surface is aligned with the acupoint. Considering the standard depth of 25mm for the Zusanli acupoint and the focal length of both acoustic lenses being 50mm, fine-tune the height of the emitted surface from the skin to ensure that the focal point of the acoustic lens accurately falls within the acupoint area.

[0045] Step 3: Set the single stimulation duration of the Fresnel spiral acoustic lens to 30 seconds and the single stimulation duration of the focused acoustic lens to 3 minutes, alternating 3 times. In the working interface of pulse transmitter receiver 1, select "Enable" to transmit the electrical signal and implement acoustic twisting stimulation, simultaneously starting the treatment timer. By adjusting the output voltage of pulse transmitter receiver 1, the ultrasonic transducer 2 emits a frequency of 500 kHz and an intensity of 200 mW / cm². 2 Planar ultrasound waves are incident perpendicularly onto the incident surface of the Fresnel spiral acoustic lens 5. After phase modulation by the spiral structure of the exit surface, a vortex acoustic wave with orbital angular momentum is formed. The vortex acoustic wave is focused at the Zusanli acupoint, forming a stable rotating sound pressure field. After the vortex focusing mode ends, a micro stepper motor drives the rotating shaft to switch the focusing acoustic lens to a working position coaxial with the ultrasound transducer. The focusing acoustic lens converts the planar ultrasound waves into a focused sound field, entering a static stimulation mode. This alternating cycle is repeated three times. During the treatment, the operator can observe the temperature and sound intensity curves through the real-time monitoring device 10. No alarm thresholds are triggered throughout the entire process.

[0046] Step 4: After the alternating cycle treatment is completed, select "Disable" in the working interface of the pulse transmitter receiver 1 to turn off the electrical signal output and stop the ultrasound emission; keep the real-time monitoring device 10 working for 3 minutes to record the temperature drop of the user's acupoint area. After the body temperature returns to normal, the real-time monitoring device 10 can be removed, all components can be put back in their positions, and treatment data such as temperature and sound intensity can be saved and organized.

[0047] The above is merely a specific embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, without departing from the core technical solution of the present invention, appropriate adjustments can be made to the parameters of the core components (such as the focal length of the acoustic lens, ultrasonic frequency, etc.) to adapt to the treatment needs of acupoints at different depths and locations; all such adjustments fall within the protection scope of the present invention.

[0048] The above detailed description further illustrates the purpose, technical solution, and beneficial effects of the invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A Fresnel spiral acoustic lens, characterized in that: It consists of a set of helical structures with gaps, including only an incident surface and an exit surface arranged opposite each other. The surface facing the ultrasonic transducer's emitting end is the incident surface, which is used to ensure that the planar sound waves emitted by the ultrasonic transducer are perpendicularly incident; the exit surface is the helical phase modulation surface of the exit sound waves.

2. The acoustic lens as described in claim 1, characterized in that: The Fresnel spiral acoustic lens is coaxially mounted on the acoustic emission end of the ultrasonic transducer. The Fresnel spiral acoustic lens and the ultrasonic transducer are fixed by 3D-printed connectors to ensure the coaxiality of the ultrasonic propagation path.

3. The acoustic lens as described in claim 1, characterized in that: The spiral curve of the spiral structure Determined by the following formula: Where r is the radial distance from the point to the central axis of the Fresnel spiral acoustic lens. Where is the circumferential angle, and F is the focal length of the acoustic lens. For the wavelength of sound, It is the radius of the opaque region at the center of the acoustic lens; Through phase modulation of the spiral structure, the phase of the incident sound wave after passing through the lens is spirally distributed along the circumference, thereby forming a vortex sound wave with orbital angular momentum, which is used for acoustic twisting stimulation.

4. The acoustic lens as described in claim 1, 2, or 3, characterized in that: The lens has a focal length of 50mm, a diameter not exceeding 70mm, and a thickness of 2mm; it is compatible with an ultrasonic transducer operating at 500kHz and has a diameter of 70mm; the acoustic lens is made of laser-cut stainless steel, fabricated as a Fresnel spiral lens with a total of 5 turns; the stainless steel has a sound velocity of 5790m / s and a density of 7480kg / m³. 3 .

5. An ultrasonic acupuncture device made using the acoustic lens as described in claim 1, 2, or 3, characterized in that: The acupuncture device includes an ultrasonic transducer, a Fresnel spiral acoustic lens, a focusing acoustic lens, and a rotating disk. The ultrasonic transducer is used to emit a planar sound field. The rotating disk has two lens mounting bases for mounting the Fresnel spiral acoustic lens and the focusing acoustic lens. The working state of the ultrasonic acupuncture device is switched by rotating the disk. When the Fresnel spiral acoustic lens is in working state, it emits a spiral focused sound field to simulate the twisting effect of acupuncture. When the focusing acoustic lens is in working state, it emits a static focused sound field to simulate the needle retention effect of acupuncture.

6. The focusing acoustic lens as described in claim 5, characterized in that: The focusing acoustic lens has a focal length of 50mm and a diameter of 70mm to match the ultrasonic transducer. It is suitable for ultrasonic operating frequencies of 500kHz. The focused acoustic pressure field is a static point distribution with no rotational characteristics.

7. The acupuncture device as described in claim 5, characterized in that: It also includes a pulse transmitter and receiver, a micro stepper motor, a rotating shaft, and a real-time monitoring device; the pulse transmitter and receiver is used to provide an adjustable frequency and adjustable amplitude electrical signal to the ultrasonic transducer; the micro stepper motor is used to drive lens switching; the rotating shaft is used to connect the micro stepper motor and the rotating disk; the real-time monitoring device includes a temperature sensor and a sound intensity sensor, used to collect tissue temperature and sound intensity data of the acupoint area in real time to avoid tissue damage.

8. A method for achieving non-invasive ultrasonic acupuncture using the acupuncture instrument as described in claim 5, characterized in that: The ultrasonic transducer emits planar ultrasonic waves by using an adjustable frequency and amplitude electrical signal output from a pulse transmitter and receiver. A lens switching mechanism consisting of a micro stepper motor, a rotating shaft, and a rotating disk drives the Fresnel spiral acoustic lens and the focusing acoustic lens mounted on the rotating disk to rotate alternately to the coaxial working position of the ultrasonic transducer's acoustic emission end. This achieves seamless switching between the spiral focused sound field and the pure focused sound field, simulating the stimulation effect of intermittent twisting and static needle retention in acupuncture, thus realizing non-invasive acoustic twisting ultrasonic acupuncture. At the same time, the device collects tissue temperature and sound intensity data of the acupoint area in real time, thereby providing feedback to adjust the intensity of the driving signal.

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