CN116439981A - Shock wave treatment feedback device - Google Patents
Shock wave treatment feedback device Download PDFInfo
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- CN116439981A CN116439981A CN202310712470.XA CN202310712470A CN116439981A CN 116439981 A CN116439981 A CN 116439981A CN 202310712470 A CN202310712470 A CN 202310712470A CN 116439981 A CN116439981 A CN 116439981A
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- 230000035939 shock Effects 0.000 title claims abstract description 81
- 239000000523 sample Substances 0.000 claims abstract description 55
- 238000012545 processing Methods 0.000 claims abstract description 15
- 230000001225 therapeutic effect Effects 0.000 claims abstract description 11
- 238000002604 ultrasonography Methods 0.000 claims description 16
- 238000002560 therapeutic procedure Methods 0.000 claims description 11
- 238000012800 visualization Methods 0.000 claims description 9
- 230000035515 penetration Effects 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 4
- 210000001519 tissue Anatomy 0.000 description 41
- 238000000034 method Methods 0.000 description 9
- 210000003205 muscle Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001902 propagating effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 210000000577 adipose tissue Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000000338 in vitro Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000554 physical therapy Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H23/00—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms
- A61H23/008—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms using shock waves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H23/00—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms
- A61H23/02—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms with electric or magnetic drive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/12—Driving means
- A61H2201/1207—Driving means with electric or magnetic drive
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
The invention discloses a shock wave treatment feedback device, which relates to the field of shock wave treatment, wherein a first ultrasonic probe and a second ultrasonic probe are arranged on two sides of a handle of a shock wave treatment instrument; the first ultrasonic probe is used for transmitting ultrasonic pulse beams; the second ultrasonic probe is used for receiving ultrasonic echo signals; the signal processing module is connected with the second ultrasonic probe; the signal processing module is used for determining the delay and the amplitude of the ultrasonic echo signal according to the ultrasonic echo signal; determining the position and deformation of the internal interface of the tissue according to the delay and the amplitude; the shock wave intensity calculation module is connected with the signal processing module; the shock wave intensity calculation module is used for determining the propagation speed and the fluence of the shock wave according to the position and the deformation quantity of the internal interface of the tissue and combining the mechanical properties of the tissue. The invention can realize accurate measurement and feedback of the energy level in the tissue, thereby accurately determining the external shock wave loading site and the initial strength parameter of the shock wave therapeutic instrument.
Description
Technical Field
The invention relates to the field of shock wave treatment, in particular to a shock wave treatment feedback device.
Background
In vitro shock wave therapy is a common physical therapy method which achieves the therapeutic purpose by the biological effect of shock waves in tissues. In order to achieve a therapeutic effect, it is necessary to load an impact vibration excitation of appropriate intensity and repetition frequency to the therapeutic target. However, the propagation process of the shock wave in the tissue is similar to that of the sound wave, and is affected by various factors such as contact area, impact contact time, impact effect and the like, the propagation characteristics of the shock wave are nonlinear, and the impact vibration excitation level actually loaded at the treatment target point cannot be accurately regulated.
In order to solve the problem, the existing shock wave therapeutic apparatus utilizes compressed air to drive a elastomer to strike an applicator to generate shock waves with specific intensity, and the intensity of the shock waves is controlled by controlling the starting and stopping of a compressor to adjust the driving air pressure. However, due to the complex acoustic impedance characteristics of biological tissues, with a multilayer structure such as skin-fat-muscle, shock waves can be absorbed, reflected and refracted when propagating through different acoustic impedance interfaces, so that the initial impact strength cannot accurately reflect the energy level loaded inside the tissues. Therefore, doctors can only adjust the impact position and the pressing force through experience and hand feeling, thereby limiting the research of the impact wave treatment dose-effect relationship and the popularization of clinical application.
Disclosure of Invention
The invention aims to provide a shock wave treatment feedback device which can accurately measure and feed back the energy level in tissues so as to accurately determine the external shock wave loading site and the initial strength parameter of a shock wave treatment instrument.
In order to achieve the above object, the present invention provides the following solutions:
a shockwave therapy feedback device comprising: the ultrasonic probe comprises a first ultrasonic probe, a second ultrasonic probe, a signal processing module and a shock wave intensity calculating module;
the first ultrasonic probe and the second ultrasonic probe are respectively arranged at two sides of the handle of the shock wave therapeutic instrument;
the first ultrasonic probe is used for transmitting ultrasonic pulse beams; the second ultrasonic probe is used for receiving ultrasonic echo signals;
the signal processing module is connected with the second ultrasonic probe; the signal processing module is used for determining the delay and the amplitude of the ultrasonic echo signal according to the ultrasonic echo signal; determining the position and deformation of the internal interface of the tissue according to the delay and the amplitude of the ultrasonic echo signal;
the shock wave intensity calculation module is connected with the signal processing module; the shock wave intensity calculation module is used for determining the propagation speed and the fluence of the shock wave according to the position and the deformation of the internal interface of the tissue and combining the mechanical properties of the tissue.
Optionally, the first ultrasonic probe and the second ultrasonic probe are arranged along a straight line.
Optionally, the shockwave therapy feedback device further comprises: a first refractive prism and a second refractive prism;
the first refraction prism is arranged at the front end of the first ultrasonic probe; the second refraction prism is arranged at the front end of the second ultrasonic probe.
Optionally, an ultrasound couplant is added between the first ultrasound probe and the skin surface and between the second ultrasound probe and the skin surface.
Alternatively, a formula is utilizedDetermining energy flow density; wherein I is the energy flow density of the shock wave, ">For the energy loaded during a single impact, +.>Is energy +.>Is arranged in the middle of the reaction chamber; />For +.>The pressure value is obtained according to the elastic modulus of the tissue and the deformation amount of the tissue; />For the density of the medium of the tissue phantom, +.>Is the propagation velocity of the wave in the medium, < >>Is the dielectric acoustic impedance.
Optionally, the shockwave therapy feedback device further comprises: a shock wave visualization module;
the shock wave visualization module is connected with the shock wave intensity calculation module; the shock wave visualization module is used for visually displaying the penetration depth and the radiation range of the shock wave.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a shock wave treatment feedback device, which is provided with a first ultrasonic probe and a second ultrasonic probe, namely an ultrasonic transmitting and receiving device, and utilizes the characteristic that the transmitted ultrasonic pulse beams have different propagation speeds in tissues to analyze the delay and the amplitude of received scattering signals so as to determine the position and the deformation quantity of an internal interface of the tissues, and can calculate the penetration depth and the energy flow density of the shock waves which are actually loaded by combining the mechanical properties of the tissues. The shock wave treatment feedback device can realize accurate measurement and feedback of the energy level in the tissue so as to ensure that each impact has stable strength, thereby enabling the shock wave treatment to achieve the expected effect. Therefore, the invention can improve the effectiveness and safety of the external shock wave treatment, reduce the dependence on the experience and hand feeling of doctors, and is helpful for better understanding the propagation and action mechanism of the shock wave in tissues.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a feedback device for shock wave therapy according to the present invention;
FIG. 2 is a schematic illustration of ultrasound pulse beam propagation;
FIG. 3 is a schematic diagram of the principle of ultrasonic pulse beam propagation;
FIG. 4 is a schematic diagram of a received ultrasonic echo signal;
fig. 5 is a schematic diagram of ultrasonic pulse beam propagation time.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a shock wave treatment feedback device which can realize accurate measurement and feedback of energy level in tissues so as to accurately determine in-vitro shock wave loading sites and initial strength parameters of a shock wave treatment instrument 1.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, the feedback device for shock wave treatment provided by the present invention includes: a first ultrasonic probe 2, a second ultrasonic probe 3, a signal processing module and a shock wave intensity calculating module.
The first ultrasonic probe 2 and the second ultrasonic probe 3 are respectively arranged at two sides of the handle of the shock wave therapeutic apparatus 1.
The first ultrasonic probe 2 is used for transmitting ultrasonic pulse beams; the second ultrasonic probe 3 is used for receiving ultrasonic echo signals. The ultrasonic pulse beam signals emitted by the first ultrasonic probe 2 propagate in different media inside the tissue, so that reflection and scattering occur between the different media. A part of the scattered wave propagates inside the tissue and reaches the second ultrasound probe 3. Due to the different propagation speeds of the ultrasonic waves in different media, the time of arrival of the scattered waves at the second ultrasonic probe 3 corresponds to the position of the tissue internal interface.
The signal processing module is connected with the second ultrasonic probe 3; the signal processing module is used for determining the delay and the amplitude of the ultrasonic echo signal according to the ultrasonic echo signal; and determining the position and deformation of the internal interface of the tissue according to the delay and the amplitude of the ultrasonic echo signal. Wherein the tissue internal interface comprises: a skin-fat interface 5 between the skin layer 4 and the fat layer 6, a fat-muscle interface 7 between the fat layer 6 and the muscle layer 8. Before the treatment starts, the front end of the handle of the shock wave treatment instrument 1 is required to contact the skin and point to a musculoskeletal target point positioned in the tissue. After the shock wave is loaded, the vertical distance is changed due to the impact pressure, and the deformation quantity is obtained by calculating the change of the distance.
The shock wave intensity calculation module is connected with the signal processing module; the shock wave intensity calculation module is used for determining the propagation speed and the fluence of the shock wave according to the position and the deformation of the internal interface of the tissue and combining the mechanical properties of the tissue.
The first ultrasonic probe 2 and the second ultrasonic probe 3 are arranged in a straight line.
In order to adjust the incident angle and the receiving angle, the feedback device for shock wave treatment provided by the invention further comprises: a first refractive prism 21 and a second refractive prism 31.
The first refractive prism 21 is disposed at the front end of the first ultrasonic probe 2; the second refractive prism 31 is provided at the front end of the second ultrasonic probe 3.
An ultrasonic couplant is added between the first ultrasonic probe 2 and the skin surface and between the second ultrasonic probe 3 and the skin surface. The ultrasonic couplant is composed of polymer gel and is used for filling gaps, reducing impedance and lubricating the probe.
As shown in fig. 2 to 5, the formula is usedDetermining energy flow density; wherein I is the energy flow density of the shock wave; />The energy loaded in the primary impact process represents effective treatment energy which is transmitted to a deep affected part after the impact wave generated by the impact wave therapeutic instrument 1 is attenuated by biological tissues, and is an index for evaluating the energy penetration performance of the impact wave therapeutic instrument 1; />Is energy +.>Is generally selected as the contact area of the treatment probe with the skin surface in clinical treatment; />For +.>The pressure value is obtained according to the elastic modulus of the tissue and the deformation amount of the tissue; />For the density of the medium of the tissue phantom, +.>Is the propagation velocity of the wave in the medium, < >>Is the dielectric acoustic impedance.
As shown in figure 4 of the drawings,receiving ultrasound propagating along a body surface at a timeSignal (I)>Receiving an ultrasound signal reflected via the skin-fat interface at the moment,/->For the time of propagation of ultrasound waves in the skin layer, the energy flow density of the shock waves in the skin tissue +.>The method comprises the following steps:
。
for the time taken for the ultrasound to propagate in the skin layer, the ultrasound signal is received first after the synchronous emission, i.e. (-) because of the shortest path>Waveform at time).
Multiplying by the ultrasonic sound velocity is the horizontal distance between the two ultrasonic probes. The distance in the vertical direction is then calculated by the Pythagorean theorem.
The ultrasonic signals reflected twice through the skin-fat-muscle interface are received at the moment, and the ultrasonic signals are reflected twice through the skin-fat-muscle interface>For the time of propagation of ultrasound waves in the adipose tissue, the energy flow density of the shock waves in the adipose tissue is +.>The method comprises the following steps:
。
the ultrasonic signal reflected by the tertiary skin-fat-muscle-bone interface is received at the moment, and the ultrasonic signal is reflected by the tertiary skin-fat-muscle-bone interface>For the time taken for the ultrasound to propagate in the muscle layer, the energy flow density of the shock wave in the muscle tissue is +.>The method comprises the following steps:
。
wherein, the liquid crystal display device comprises a liquid crystal display device,for energy in the skin layer>For energy in the fat layer +.>Is the energy in the muscle layer. />For the density of the skin layer>For the density of fat layer->Is the density of the muscle layer. />For the speed of sound propagating in the skin layer, +.>For transmission in fat layerSound velocity of->Is the speed of sound propagating in the muscle layer. The density and acoustic impedance of each layer are fixed values and are only related to the properties of the material itself.
As shown in fig. 3, the propagation speed of the ultrasonic signal in the tissue is a constant value, and the path traveled by the ultrasonic wave in the tissue can be obtained by calculating the time at which the ultrasonic signal is received.
Taking the propagation process of ultrasonic signals in the skin layer as an example, the hypotenuse length of a right triangle,/>Is the sound velocity in the skin, < >>The time it takes for the ultrasound to propagate within the skin layer.
The length b is half of the horizontal distance of the probe, and the lengths a, b and c meet Pythagorean theorem, so that the thickness of the skin layer (or the position of the skin-fat interface)。
In order to realize visual display, the invention provides a shock wave treatment feedback device, which further comprises: a shock wave visualization module; the shock wave visualization module is connected with the shock wave intensity calculation module; the shock wave visualization module is used for visually displaying the penetration depth and the radiation range of the shock wave.
The ultrasonic wave transmitting and receiving device is arranged, the propagation distance of ultrasonic signals is calculated by measuring the propagation time difference of the ultrasonic signals through the inside of the tissues and combining the sound velocity in the tissues, and the measurement of the internal interfaces of the tissues is realized, so that the tissue deformation caused by the action of shock waves is obtained.
The elastic modulus of the tissue is combined, so that the calculation of the shock wave intensity is realized, and then an operator is guided to determine an external shock wave loading site and adjust the initial intensity parameter of the shock wave therapeutic apparatus 1, and the shock wave with proper dosage is loaded to an internal target point.
The invention can know the deformation of each layer of tissue by measuring the propagation time of ultrasonic signals and determining the propagation distance of ultrasonic waves in each layer of tissue, wherein the deformation is caused by the sound field pressure of shock waves. The deformation and elastic modulus of the tissue are calculated to obtain the stress to which the tissue is subjected, which is one of the indexes for evaluating the strength of the shock wave.
The invention feeds back the measured impact strength to an operator to adjust the holding strength, direction and the like of the impact head in the impact treatment process, thereby realizing accurate application of the treatment dosage.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (6)
1. A shockwave therapy feedback device comprising: the ultrasonic probe comprises a first ultrasonic probe, a second ultrasonic probe, a signal processing module and a shock wave intensity calculating module;
the first ultrasonic probe and the second ultrasonic probe are respectively arranged at two sides of the handle of the shock wave therapeutic instrument;
the first ultrasonic probe is used for transmitting ultrasonic pulse beams; the second ultrasonic probe is used for receiving ultrasonic echo signals;
the signal processing module is connected with the second ultrasonic probe; the signal processing module is used for determining the delay and the amplitude of the ultrasonic echo signal according to the ultrasonic echo signal; determining the position and deformation of the internal interface of the tissue according to the delay and the amplitude of the ultrasonic echo signal;
the shock wave intensity calculation module is connected with the signal processing module; the shock wave intensity calculation module is used for determining the propagation speed and the fluence of the shock wave according to the position and the deformation of the internal interface of the tissue and combining the mechanical properties of the tissue.
2. The shockwave therapy feedback device according to claim 1, wherein said first ultrasonic probe and said second ultrasonic probe are arranged in a straight line.
3. The shockwave therapy feedback device according to claim 1, further comprising: a first refractive prism and a second refractive prism;
the first refraction prism is arranged at the front end of the first ultrasonic probe; the second refraction prism is arranged at the front end of the second ultrasonic probe.
4. A shockwave therapy feedback device according to claim 1, wherein an ultrasound couplant is added between the first ultrasound probe and the skin surface and between the second ultrasound probe and the skin surface.
5. A shockwave therapy feedback device according to claim 1, wherein the formula is usedDetermining energy flow density; wherein I is the energy flow density of the shock wave, ">For the energy loaded during a single impact, +.>Is energy +.>Is arranged in the middle of the reaction chamber; />For +.>The pressure value is obtained according to the elastic modulus of the tissue and the deformation amount of the tissue; />For the density of the medium of the tissue phantom, +.>Is the propagation velocity of the wave in the medium, < >>Is the dielectric acoustic impedance.
6. The shockwave therapy feedback device according to claim 1, further comprising: a shock wave visualization module;
the shock wave visualization module is connected with the shock wave intensity calculation module; the shock wave visualization module is used for visually displaying the penetration depth and the radiation range of the shock wave.
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Cited By (2)
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CN117030083A (en) * | 2023-10-10 | 2023-11-10 | 北京航空航天大学 | Impact strength testing system of shock wave therapeutic instrument |
CN117073876A (en) * | 2023-10-13 | 2023-11-17 | 北京航空航天大学 | Impact strength testing device and method for shock wave therapeutic instrument |
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