WO2021051662A1 - Système d'acupuncture à ultrasons et procédé de commande de système d'acupuncture à ultrasons - Google Patents

Système d'acupuncture à ultrasons et procédé de commande de système d'acupuncture à ultrasons Download PDF

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Publication number
WO2021051662A1
WO2021051662A1 PCT/CN2019/123445 CN2019123445W WO2021051662A1 WO 2021051662 A1 WO2021051662 A1 WO 2021051662A1 CN 2019123445 W CN2019123445 W CN 2019123445W WO 2021051662 A1 WO2021051662 A1 WO 2021051662A1
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WO
WIPO (PCT)
Prior art keywords
ultrasonic
ultrasonic transducer
signal
transmitting unit
transducer
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PCT/CN2019/123445
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English (en)
Chinese (zh)
Inventor
蔡飞燕
夏向向
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深圳先进技术研究院
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Publication of WO2021051662A1 publication Critical patent/WO2021051662A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N7/02—Localised ultrasound hyperthermia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N2007/0004—Applications of ultrasound therapy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N2007/0078—Ultrasound therapy with multiple treatment transducers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N7/02—Localised ultrasound hyperthermia
    • A61N2007/027—Localised ultrasound hyperthermia with multiple foci created simultaneously

Definitions

  • the present disclosure relates to medical imaging technology, for example, to an ultrasonic acupuncture system and an ultrasonic acupuncture system control method.
  • Acupuncture is a unique disease treatment method in our country. Acupuncture can dredge the meridians so that it can play a normal physiological role and achieve the purpose of curing diseases.
  • Traditional acupuncture uses needles to penetrate the patient's body at a certain angle to stimulate specific parts to achieve the purpose of treatment.
  • traditional acupuncture treatment has some risks, including potential unsafe factors such as fainting, stuck needles, bent needles, bleeding, and infections.
  • ultrasound energy has the advantages of easy concentration, strong penetration, good directionality, and zero or minimal damage to human tissues, it has received more and more attention in medical diagnosis and treatment.
  • the traditional ultrasonic focusing to form a sound beam to stimulate the treatment site is to use a concave ultrasonic transducer or a convex acoustic lens to control the sound wave focusing.
  • the focal length of the focused sound wave and the focal spot width and depth of the focused sound generated by this focusing method are fixed and single. The adjustment results in a single focus of the sound beam generated by the ultrasound acupuncture system, which is not flexible enough, which limits the effect of ultrasound in acupuncture treatment.
  • the embodiment of the present invention provides an ultrasonic acupuncture system and a control method of the ultrasonic acupuncture system to achieve flexible control of the number and focal length of the ultrasonic focus, so that the ultrasonic acupuncture system can stimulate the stimulated part at multiple points at the same time and make the ultrasonic stimulation depth adjustable .
  • the embodiment of the present invention provides an ultrasonic acupuncture system, which includes:
  • the ultrasonic transducer includes a plurality of ultrasonic transmitting units
  • the ultrasonic multi-channel controller is configured to adjust the parameters of the ultrasonic signal generated by each ultrasonic transmitting unit;
  • Each ultrasonic transmitting unit included in the ultrasonic transducer is configured to generate and transmit the ultrasonic signal under the control of the ultrasonic multi-channel controller.
  • the ultrasonic transducer may include: at least one multi-element ultrasonic transducer, a multi-element ultrasonic transducer array composed of at least two single-element ultrasonic transducers, or at least one multi-element ultrasonic transducer and A multi-ultrasonic transducer array composed of at least two single-element ultrasonic transducers;
  • any one of the multi-element ultrasonic transducers and each single-element ultrasonic transducer in the multi-element ultrasonic transducer array is the ultrasonic transmitting unit.
  • the multi-element ultrasonic transducer may be an area array ultrasonic transducer or a ring array ultrasonic transducer.
  • the ultrasonic multi-channel controller may be set to:
  • the phase and amplitude of the ultrasonic signal to be transmitted by the ultrasonic transmitting unit are determined according to the phase distribution formula of the ultrasonic signal focusing, and the phase and amplitude of the ultrasonic transmitting unit are adjusted.
  • the ultrasound transducer and the part to be stimulated by ultrasound may be coupled through a coupling module, which is a transmission medium of ultrasound signals.
  • the ultrasonic signal may be one of the following: a single-point focused sound beam signal, a multi-point focused sound beam signal, a needle-shaped sound beam signal, and a curved sound beam signal with self-acceleration.
  • the ultrasonic multi-channel controller may be set to:
  • N is any integer
  • ⁇ is the wavelength of the sound wave
  • F is the focal length
  • r is the distance from the ultrasonic transducer surface to the focal center.
  • the ultrasonic multi-channel controller may be set to:
  • Is the phase distribution of the ultrasonic transducer surface
  • ⁇ and ⁇ are the coordinates of the ultrasonic transducer surface
  • (x′,y′,z′) are the coordinates of the sound wave propagation surface
  • x′ x/F
  • y ′ y′/F
  • F is the focal length of the needle-shaped acoustic beam signal
  • the phase distribution formula on the surface of the ultrasonic transducer is
  • the ultrasonic multi-channel controller may be set to:
  • the embodiment of the present invention also provides a control method of an ultrasonic acupuncture system, which is applied to an ultrasonic acupuncture system.
  • the ultrasonic acupuncture system includes an ultrasonic multi-channel controller and an ultrasonic transducer, and the ultrasonic transducer includes a plurality of ultrasonic transmitting units.
  • the method includes:
  • the corresponding ultrasonic transmitting unit is controlled to generate and transmit the ultrasonic signal.
  • the adjusting the parameters of the ultrasonic signal generated by each ultrasonic transmitting unit may include:
  • the phase and amplitude of the ultrasonic signal to be transmitted by the ultrasonic transmitting unit are determined according to the phase distribution formula of the ultrasonic signal focusing, and the phase and amplitude of the ultrasonic transmitting unit are adjusted.
  • the ultrasonic transducer may include: at least one multi-element ultrasonic transducer, a multi-element ultrasonic transducer array composed of at least two single-element ultrasonic transducers, or at least one multi-element ultrasonic transducer and A multiple ultrasonic transducer array composed of at least two single-element ultrasonic transducers; any one of the multiple ultrasonic transducers and each single-element ultrasonic transducer in the multiple ultrasonic transducer array
  • the energy device is the ultrasonic sending unit.
  • the ultrasonic signal may be one of the following: a single-point focused sound beam signal, a multi-point focused sound beam signal, a needle-shaped sound beam signal, and a curved sound beam signal with self-acceleration.
  • the focal spot at which the ultrasound signal is focused is less than or equal to 0.5 ⁇ , where ⁇ is the wavelength of the sound wave.
  • the embodiment of the present invention adopts at least one multi-element ultrasonic transducer, a multi-element ultrasonic transducer array composed of at least two single-element ultrasonic transducers, or at least one multi-element ultrasonic transducer and at least two ultrasonic transducers.
  • the multi-ultrasonic transducer array composed of single-element ultrasonic transducers is used as ultrasonic transducers in the ultrasonic acupuncture system, and it sends out single-point, multi-point, needle-shaped or curved sound beam signals under the control of the ultrasonic multi-channel controller.
  • the focus depth is single, not flexible enough, and the acupuncture points cannot be accurately stimulated in the acupuncture treatment.
  • the above scheme can realize the adjustment of the phase and amplitude of each ultrasound transmitting unit, and generate single-point focusing, multi-point focusing, needle-shaped and curved sound beam signals, so that the acupuncture system can accurately determine the depth and position of different acupuncture points of the human body Ultrasound stimulation, so as to achieve the effect of treatment and health care.
  • Figure 1 is a schematic structural diagram of an ultrasonic acupuncture system in the first embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of the ultrasonic acupuncture system in the first embodiment of the present invention
  • 3a and 3b are top views of the multi-element ultrasonic transducer in the first embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the multi-element ultrasonic transducer in the first embodiment of the present invention forming different sound beams perpendicular to the surface of the ultrasonic transducer;
  • Fig. 5 is a flow chart of the control method of the ultrasonic acupuncture system in the second embodiment of the present invention.
  • Fig. 1 is a schematic structural diagram of an ultrasonic acupuncture system provided in the first embodiment of the present invention. This embodiment can be applied to a situation where the ultrasonic acupuncture system is used to perform ultrasonic stimulation on a part that needs acupuncture treatment.
  • the ultrasonic acupuncture system includes: an ultrasonic multi-channel controller 10 and an ultrasonic transducer 20.
  • the function of the ultrasonic transducer is to convert the input electrical power into mechanical power (ie, ultrasonic signal) and then transmit it out.
  • the ultrasonic transducer 20 includes a plurality of ultrasonic transmitting units.
  • the ultrasonic transducer 20 includes: at least one multi-element ultrasonic transducer, a multi-element ultrasonic transducer array composed of at least two single-element ultrasonic transducers, or at least one multi-element ultrasonic transducer A transducer and a multi-ultrasonic transducer array composed of at least two single-element ultrasonic transducers.
  • any one element in the multi-element ultrasonic transducer and each single element ultrasonic transducer in the multi-element ultrasonic transducer array is the ultrasonic sending unit.
  • Fig. 1 there is only one ultrasonic transducer 20, which is a multi-element ultrasonic transducer.
  • FIG. 2 there are multiple ultrasonic transducers 20. Three ultrasonic transducers 20 are shown in FIG. 2, which are only illustrative and are not a limitation on the number of ultrasonic transducers 20.
  • FIG. 2 Three ultrasonic transducers 20 are shown in FIG. 2, which are only illustrative and are not a limitation on the number of ultrasonic transducers 20.
  • each ultrasonic transducer 20 can be a multi-ultrasonic transducer array composed of multiple single-element ultrasonic transducers, or it can be a multi-ultrasonic transducer composed of multiple multi-element ultrasonic transducers.
  • the transducer array may also be a multi-ultrasonic transducer array composed of at least one single-element ultrasonic transducer and at least one multi-element ultrasonic transducer.
  • the ultrasonic transducer 20 When the ultrasonic transducer 20 is a multi-element ultrasonic transducer, it may be an area array ultrasonic transducer or a ring-array ultrasonic transducer. Refer to the top view of the multi-element ultrasonic transducer shown in FIG. 3. Wherein, FIG. 3a shows a top view of the area array ultrasonic transducer 21, and FIG. 3b shows a top view of the ring array ultrasonic transducer 22. In Figure 3a and Figure 3b, each cell represents an array element.
  • the ultrasonic multi-channel controller 10 is configured to adjust the parameters of the ultrasonic signal generated by each ultrasonic transmitting unit.
  • the ultrasonic multi-channel controller 10 may adopt the ultrasonic control system of Verasonics Corporation of the United States.
  • Each ultrasonic transmitting unit included in the ultrasonic transducer 20 generates and transmits an ultrasonic signal under the control of the ultrasonic multi-channel controller 10.
  • each control channel of the ultrasonic multi-channel controller 10 can control one ultrasonic transmitting unit.
  • the ultrasonic multi-channel controller 10 is configured to obtain the number of focal points, focal positions, and focal lengths of the ultrasonic signals to be transmitted by the ultrasonic transmitter unit, and determine the phase of the ultrasonic signals to be transmitted by the ultrasonic transmitter unit according to the phase distribution formula of the ultrasonic signal focusing. And the amplitude, and regulate the phase and amplitude of the ultrasonic transmitting unit.
  • the user can determine the number of focal points, the position of the focal point, and the size of the focal length that the ultrasonic signal needs to form according to specific usage requirements, such as which acupuncture points need to be stimulated and the depth of stimulation.
  • the ultrasound signal sent by the ultrasound transducer 20 can be controlled to be a curved sound beam signal, which can bypass obstacles and focus with less energy loss; if the part that needs stimulation requires a larger depth range ,
  • the ultrasonic signal sent by the controllable ultrasonic transducer 20 is a needle-shaped sound beam signal, as shown in FIG. 4(c).
  • the coupling module 30 can be used as the transmission medium of the ultrasonic signal between the ultrasonic transducer 20 and the part to be ultrasonically stimulated, that is, the ultrasonic transducer 20 and the part to be ultrasonically stimulated They are coupled through the coupling module 30.
  • the coupling module 30 may be medical silicone rubber, water-absorbent sponge, or medical coupling agent. The purpose of using the coupling module 30 is to fill the tiny gaps between the ultrasound transducer 20 and the site to be stimulated by ultrasound, and to prevent the microscopic air between these gaps from affecting the penetration of ultrasound.
  • the acoustic impedance difference between the ultrasonic transducer 20 and the surface (such as the skin) of the site to be ultrasonically stimulated is reduced, thereby reducing the reflection loss of the ultrasonic energy on the surface.
  • the ultrasonic signal is one of the following: a single-point focused sound beam signal, a multi-point focused sound beam signal, a needle-shaped sound beam signal, and a curved sound beam signal with self-acceleration.
  • the ultrasonic multi-channel controller 10 is set to:
  • N is an arbitrary integer
  • ⁇ is the wavelength of the sound wave
  • F is the focal length
  • r is the distance between the surface of the ultrasonic transducer 20 and the focal center.
  • the ultrasonic multi-channel controller 10 is set to:
  • Is the phase distribution on the surface of the ultrasonic transducer
  • ⁇ and ⁇ are the coordinates of the surface of the ultrasonic transducer
  • (x',y',z') are the coordinates of the sound wave propagation surface
  • x' x/F
  • y′ y′/F
  • F is the focal length of the needle-shaped acoustic beam signal
  • the phase distribution formula on the surface of the ultrasonic transducer 20 is
  • the ultrasonic multi-channel controller 10 is set to:
  • the technical solution of this embodiment adopts at least one multi-element ultrasonic transducer, a multi-ultrasonic transducer array composed of at least two single-element ultrasonic transducers, or at least one multi-element ultrasonic transducer and
  • a multi-ultrasonic transducer array composed of at least two single-element ultrasound transducers is used as an ultrasound transducer in the ultrasound acupuncture system, and it emits single-point focus, multi-point focus, needle shape or bending under the control of the ultrasound multi-channel controller
  • the sound beam signal is adapted to different acupuncture treatment conditions, and solves the problem that when using a concave ultrasonic transducer or a convex acoustic lens to adjust the sound wave focus, the focus depth is single, not flexible enough, and cannot be accurately stimulated in acupuncture treatment.
  • the above solution can realize the adjustment of the phase and amplitude of each ultrasound transmitting unit, and can generate single-point focusing, multi-point focusing, needle-shaped and curved sound beam signals, so that the acupuncture system can perform the depth and position of different acupuncture points of the human body. Precise ultrasound stimulation, so as to achieve the effect of treatment and health care.
  • Fig. 5 is a flow chart of a control method of an ultrasonic acupuncture system provided by the second embodiment of the invention.
  • This embodiment can be applied to a situation where the ultrasonic acupuncture system is used to perform ultrasonic stimulation on a part that needs acupuncture treatment.
  • the ultrasonic acupuncture system includes an ultrasonic multi-channel controller and an ultrasonic transducer, and the ultrasonic transducer includes a plurality of ultrasonic transmitting units.
  • the control method of the ultrasonic acupuncture system can be realized by the ultrasonic acupuncture system.
  • control method of the ultrasonic acupuncture system includes the following steps:
  • S501 Adjust the parameters of the ultrasonic signal generated by each of the ultrasonic transmitting units.
  • the parameters of the ultrasonic signal generated by each ultrasonic transmitting unit can be adjusted by: acquiring the number of focal points, focal positions and focal lengths of the ultrasonic signals to be transmitted by the ultrasonic transmitting unit, according to the phase distribution formula of the ultrasonic signal focusing Determine the phase and amplitude of the ultrasonic signal to be transmitted by the ultrasonic transmitter unit, and regulate the phase and amplitude of the ultrasonic transmitter unit.
  • the ultrasonic transducer in the ultrasonic acupuncture system, includes: at least one multi-element ultrasonic transducer, a multi-ultrasonic transducer array composed of at least two single-element ultrasonic transducers, or at least A multi-element ultrasonic transducer and a multi-ultrasonic transducer array composed of at least two single-element ultrasonic transducers.
  • any one element in the multi-element ultrasonic transducer and each single element ultrasonic transducer in the multi-element ultrasonic transducer array is the ultrasonic transmitting unit.
  • the user can determine the number of focal points, the position of the focal point, and the size of the focal length that the ultrasonic signal needs to form according to specific usage requirements, such as which acupuncture points need to be stimulated and the depth of stimulation.
  • the position, number, and corresponding focal length of the focal points are input into the ultrasonic multi-channel controller in the ultrasonic acupuncture system, so that the ultrasonic multi-channel controller obtains the number of focal points, focal positions, and focal lengths of the ultrasonic signals to be transmitted by the ultrasonic transmitting unit.
  • the ultrasonic multi-channel controller After the ultrasonic multi-channel controller obtains the corresponding ultrasonic signal parameters, it will derive the phase and amplitude of each element according to the corresponding phase distribution formula, that is, the phase and amplitude of the ultrasonic transmitting unit, and then adjust each The phase and amplitude of the ultrasonic transmitter unit are used to obtain the corresponding ultrasonic signal.
  • the ultrasonic signal may be one of the following: a single-point focused sound beam signal, a multi-point focused sound beam signal, a needle-shaped sound beam signal, a self-accelerating bending sound beam signal, and a self-bending sound beam signal.
  • the self-accelerating curved sound beam and the self-bending sound beam are the same kind of sound beam. Because the sound beam is curved and propagated, it can be considered that it has acceleration perpendicular to the direction of sound beam propagation, so it is called self-accelerating curved sound beam.
  • the ultrasound signal sent by the ultrasound transducer can be controlled to be bending sound
  • the beam signal can be focused around obstacles, and the energy loss is small; if the part that needs to be stimulated requires a larger depth range, the ultrasonic signal from the ultrasonic transducer can be controlled to be a needle-shaped sound beam signal.
  • the phase distribution formula on the surface of the ultrasonic transducer is:
  • S502 According to the parameters of the ultrasonic signal generated by each ultrasonic transmitting unit adjusted by the ultrasonic multi-channel controller, control the corresponding ultrasonic transmitting unit to generate and transmit the ultrasonic signal.
  • the frequency of the ultrasonic signal is 0.2-100 MHz.
  • the focal spot where the ultrasonic signal is focused is less than or equal to 0.5 ⁇ , where ⁇ is the wavelength of the sound wave.
  • the traditional single-element ultrasonic transducer cannot achieve a focal spot smaller than 0.5 ⁇ , because the classic wave has a diffraction limit (0.5 ⁇ ).
  • the phase of each element of the multi-element ultrasonic transducer can be adjusted. The sum amplitude can break this diffraction limit in single-point or multi-point focusing, and the focal spot of ultrasonic signal focusing is less than 0.5 ⁇ .
  • the technical scheme of this embodiment obtains ultrasonic signal parameters through the ultrasonic acupuncture system, and sends out single-point focus, multi-point focus, needle-shaped or curved sound beam signals under the control of the ultrasonic multi-channel controller to adapt to different acupuncture treatment conditions, and solves the problem
  • a concave ultrasonic transducer or a convex acoustic lens is used to control the focusing of sound waves, the focus depth is single, not flexible enough, and the acupuncture points cannot be accurately stimulated in acupuncture treatment.
  • the above solution can realize the adjustment of the phase and amplitude of each ultrasound transmitting unit, and can generate single-point focusing, multi-point focusing, needle-shaped or curved ultrasonic sound beams, so that the acupuncture system can perform measurement on the depth and position of different acupoints of the human body. Precise ultrasound stimulation, so as to achieve the effect of treatment and health care.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
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Abstract

L'invention concerne un système d'acupuncture à ultrasons et un procédé de commande de système d'acupuncture à ultrasons. Le système d'acupuncture à ultrasons comprend : un dispositif de commande multicanal à ultrasons (1) et un transducteur à ultrasons (20), le transducteur à ultrasons (20) comprenant une pluralité d'unités de transmission ultrasonore ; le dispositif de commande multicanal à ultrasons (10) étant conçu pour ajuster un paramètre d'un signal ultrasonore généré par chaque unité de transmission ultrasonore ; et chaque unité de transmission ultrasonore incluse dans le transducteur à ultrasons (20) étant conçue pour générer un signal ultrasonore sous la commande du dispositif de commande multicanal à ultrasons (10), et le transmettre.
PCT/CN2019/123445 2019-09-17 2019-12-05 Système d'acupuncture à ultrasons et procédé de commande de système d'acupuncture à ultrasons WO2021051662A1 (fr)

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CN201910877338.8 2019-09-17
CN201910877338.8A CN110507918A (zh) 2019-09-17 2019-09-17 一种超声针灸系统和超声针灸系统控制方法

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CN110507918A (zh) * 2019-09-17 2019-11-29 深圳先进技术研究院 一种超声针灸系统和超声针灸系统控制方法
CN111450424A (zh) * 2020-04-03 2020-07-28 中国科学院深圳先进技术研究院 超声换能器、超声换能器制作方法以及超声设备
CN112604191A (zh) * 2020-12-14 2021-04-06 中国科学院深圳先进技术研究院 多焦点超声波的生成装置及生成方法
TWI818390B (zh) * 2021-12-23 2023-10-11 財團法人工業技術研究院 超音波針灸裝置

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