Device for realizing underwater ultrasonic knife based on ultrasonic artificial materials

Abstract

The present invention provides a device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials, which belongs to the field of acoustics and has the following characteristics: a bottom base in the shape of a rectangular parallelepiped; and a plurality of raised units connected to the same side of the bottom base and arranged in sequence along the length direction of the bottom base, wherein the raised units are in the shape of a triangular prism and their longitudinal cross-section is triangular, and the raised units have a rectangular bottom surface, which is connected to the bottom base. The device has a compact structure and a simple design. It does not require any circuit control means and can achieve the effect of an ultrasonic scalpel only by relying on its own structural characteristics. It is a passive ultrasonic scalpel. At the same time, the device has a significant energy localization effect and is not limited to a single operating frequency. This has very important application value in the field of biomedical engineering, such as medical ultrasound treatment, and provides a new idea for the design of multifunctional compact acoustic components.

Description

Technical Field

[0001] The present invention relates to the field of acoustics, and in particular to a device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials. Background Art

[0002] The ultrasonic scalpel is a new type of surgical device primarily used for tissue manipulation, such as cutting, separation, and coagulation. It does not cause side effects such as tissue drying and burns. It features minimal intraoperative bleeding, minimal damage to surrounding tissue, high safety, and the absence of smoke. It is widely used in surgical procedures and is known as the "bloodless scalpel." Traditional ultrasonic scalpels generally utilize an active system, consisting of three main components: an ultrasonic excitation power supply, an ultrasonic transducer, and a blade (a solid acoustic waveguide). Its mechanism of action is to convert high-frequency electrical energy into ultrasonic mechanical (vibration) energy, which is then radiated from the blade tip toward the localized tissue. The surgical treatment is achieved through a series of physiological effects generated by the ultrasonic blade tip upon contact with the tissue. However, this active system typically results in complex systems, low electroacoustic conversion efficiency, high cost, and high maintenance costs. Summary of the Invention

[0003] The present invention is made to solve the above-mentioned problems, and its purpose is to provide a device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials. By utilizing the unique surface structure of the device, vertically incident ultrasonic waves are reflected and the ultrasonic energy is localized in a narrow and long area in space, thereby efficiently realizing underwater ultrasonic scalpel.

[0004] The present invention provides a device for realizing underwater ultrasonic knife based on ultrasonic artificial material, which has the following characteristics: a bottom base, which is in the shape of a rectangular parallelepiped; and a plurality of raised units, which are connected to the same side surface of the bottom base and are arranged in sequence along the length direction of the bottom base, wherein the raised units are in the shape of a triangular prism and their longitudinal cross-section is triangular, and the raised units have a rectangular bottom surface, which is connected to the bottom base.

[0005] The device for realizing underwater ultrasonic scalpel based on ultrasonic artificial material provided by the present invention may also have the following features: wherein the protruding unit further has a first inclined surface and a second inclined surface, and the first inclined surface is perpendicular to the second inclined surface.

[0006] In the device for realizing underwater ultrasonic knife based on ultrasonic artificial material provided by the present invention, it can also have the following characteristics: wherein, the distance between the intersection of the first inclined plane and the second inclined plane and the bottom surface is h, h = 0.5λ0, λ0 is the reference wavelength, and the thickness of the bottom base is l, l = 2λ0.

[0007] In the device for realizing underwater ultrasonic knife based on ultrasonic artificial material provided by the present invention, it can also have the following characteristics: wherein, the angle between the first inclined surface and the bottom surface is θ, the number of the protruding units is 14, and the values ​​of θ of the 14 protruding units arranged in sequence along the length direction of the bottom base are 15°, 15°, 20°, 25°, 30°, 30°, 35°, 35°, 40°, 40°, 40°, 45°, 45°, and 45° respectively.

[0008] The device for realizing underwater ultrasonic scalpel based on ultrasonic artificial material provided by the present invention may also have the following features: wherein the width of the bottom surface is d, λ0 is the reference wavelength.

[0009] The device for realizing underwater ultrasonic scalpel based on ultrasonic artificial material provided by the present invention may also have the following feature: wherein all the protruding units are connected in sequence.

[0010] The device for realizing underwater ultrasonic scalpel based on ultrasonic artificial material provided by the present invention may also have the following feature: wherein the bottom base and all the protruding units are integrally formed.

[0011] The device for realizing underwater ultrasonic scalpel based on ultrasonic artificial material provided by the present invention may also have the following characteristics: wherein, the material of the device for realizing underwater ultrasonic scalpel based on ultrasonic artificial material is a material whose acoustic impedance is 20 times greater than the acoustic impedance of water.

[0012] Functions and effects of the invention

[0013] According to the device for realizing underwater ultrasonic knife based on ultrasonic artificial material involved in the present invention, it includes a bottom base and multiple protrusion units. The bottom base is in the shape of a rectangular parallelepiped. The multiple protrusion units are connected to the same side of the bottom base and are arranged in sequence along the length direction of the bottom base. The protrusion unit is in the shape of a triangular prism and its longitudinal cross-section is triangular. The protrusion unit has a rectangular bottom surface, which is connected to the bottom base. During specific use, the device is placed in water, and the ultrasonic wave is vertically incident on the surface of the device. The unique surface structure of the device is utilized to make the incident ultrasonic wave reflected and localize the ultrasonic energy in a narrow and long area in space, thereby achieving the effect of underwater ultrasonic knife.

[0014] Furthermore, the device boasts a compact structure and simple design, requiring no complex circuit control systems and achieving the aforementioned functions solely through its own structural characteristics, making it a passive ultrasonic scalpel. Furthermore, the device achieved by the present invention exhibits significant localized effects on reflected wave energy and is not limited to a single operating frequency. This has significant application value in biomedical engineering, such as medical ultrasound therapy, and provides new insights into the design of multifunctional, compact acoustic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 3D schematic diagram of a device for implementing underwater ultrasonic scalpel based on ultrasonic artificial materials in an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0017] Figure 3 It is a normalized sound intensity distribution diagram of the local space of the sound wave energy of the device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials in an embodiment of the present invention under simulation conditions;

[0018] Figure 4 is a normalized longitudinal sound intensity curve of an underwater ultrasonic scalpel device based on ultrasonic artificial materials in an embodiment of the present invention when the incident ultrasonic frequency is 1 MHz;

[0019] Figure 5 is a normalized transverse sound intensity curve of an ultrasonic scalpel when the incident ultrasonic frequency is 1 MHz, according to an embodiment of the present invention;

[0020] Figure 6 It is a normalized sound intensity distribution diagram of the local space of the acoustic wave energy of the device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials in an embodiment of the present invention when the incident ultrasonic frequency is 0.9-1.15 MHz. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments and drawings specifically illustrate the device for realizing underwater ultrasonic knife based on ultrasonic artificial materials of the present invention.

[0022] <Example>

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of a device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials in an embodiment of the present invention.

[0024] like Figure 1 As shown, the device 100 for realizing underwater ultrasonic scalpel based on ultrasonic artificial material in this embodiment includes a bottom base 10 and a plurality of protruding units 20 .

[0025] The bottom base 10 is in the shape of a rectangular parallelepiped.

[0026] The plurality of protrusion units 20 are connected to the same side surface of the bottom base 10 and are arranged in sequence along the length direction of the bottom base 10. All the protrusion units 20 are connected in sequence.

[0027] Figure 2 yes Figure 1 Enlarged schematic diagram of part A.

[0028] like Figure 1 、 2 As shown, each protrusion unit 20 includes a bottom surface 21, a first inclined surface 22, and a second inclined surface 23. The protrusion unit 20 is in the shape of a triangular prism, and its longitudinal section is triangular. The bottom surface 21 is rectangular, and the entire bottom surface 21 is connected to the bottom base 20. The first inclined surface 22 is perpendicular to the second inclined surface 23. The first inclined surface 22 of all protrusion units 20 faces in one direction ( Figure 1 -x direction), the second inclined surfaces 23 of all the protruding units 20 are oriented in another direction ( Figure 1 In the +x direction), the first inclined surface 22 and the second inclined surface 23 are oriented in opposite directions.

[0029] The angle θ between the first inclined surface 22 and the bottom surface 21 is 14. In this embodiment, there are 14 protrusions 20. The values ​​of θ for the 14 protrusions 20 arranged in sequence along the length of the base 10 are 15°, 15°, 20°, 25°, 30°, 30°, 35°, 35°, 40°, 40°, 45°, 45°, and 45°, respectively. The number of protrusions and the angle of inclination θ can be adjusted according to actual application needs. This embodiment is only used as a preferred embodiment to demonstrate the ultrasonic scalpel effect.

[0030] The distance between the intersection of the first inclined surface 22 and the second inclined surface 23 and the bottom surface 21 is h, where h=0.5λ0.

[0031] The thickness of the bottom base 10 is l, where l = 2λ0. The length and width of the bottom base 10 can be adjusted according to actual needs. In this embodiment, the length of the bottom base 10 is 45 mm and the width is 40 mm.

[0032] The length of the bottom surface 21 in the y direction is equal to the width of the bottom base 10, and the width of the bottom surface 21 in the x direction is d.

[0033] Wherein, λ0 is a reference wavelength, which is a value determined according to a specified (set) incident frequency. Specifically, Where c is the speed of sound of water (1500 m / s), and f is the specified (set) incident frequency (i.e., 1 MHz in this embodiment). In this embodiment, the device 100 for implementing an underwater ultrasonic scalpel based on ultrasonic artificial materials is designed for an incident frequency of 1 MHz. That is, f is 1 MHz, and the corresponding λ0 = 1.5 mm. In actual applications, the specified (set) incident frequency can also be other than 1 MHz.

[0034] The base 10 and all raised units 20 are integrally formed, forming the entire underwater ultrasonic scalpel device 100. The entire underwater ultrasonic scalpel device 100 is constructed from an ultrasonic artificial material with an acoustic impedance greater than 20 times that of water, such as stainless steel or other metals or alloys. In this embodiment, stainless steel is used.

[0035] During use, the protrusion 20 of the underwater ultrasonic scalpel device 100 faces the incident ultrasonic wave, and the ultrasonic wave is incident perpendicularly to the surface of the underwater ultrasonic scalpel device. The "perpendicular" here means that the incident direction of the ultrasonic wave is perpendicular to the bottom base 10. The unique surface structure of the device 100 is used to reflect the ultrasonic wave and localize the ultrasonic energy in a narrow and long area in space, thus achieving the effect of an underwater ultrasonic scalpel.

[0036] Figure 3 It is a normalized sound intensity distribution diagram of the local space of the sound wave energy of the device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials in an embodiment of the present invention under simulation conditions.

[0037] like Figure 3 As shown, we conducted a specific experiment to verify the effect of the underwater ultrasonic knife device 100. In the experiment, the frequency of the incident ultrasonic wave was 1 MHz, the background medium was set to water, and the density and sound speed of water were 1000 kg / m 3 Ultrasonic waves with a frequency of 1 MHz are incident vertically from above the entire space onto the surface of the ultrasonic knife device 100; the material of the ultrasonic knife device 100 is stainless steel with a density of 7850 kg / m 3 The speed of sound is 5740 m / s. The normalized sound intensity distribution throughout the simulation space clearly demonstrates that the unique surface structure of the ultrasonic scalpel device 100 reflects ultrasonic waves and localizes the ultrasonic energy within a narrow, long region (white area) in space, significantly achieving the effect of an underwater ultrasonic scalpel.

[0038] Figure 4 is a normalized longitudinal sound intensity curve of an underwater ultrasonic scalpel device based on ultrasonic artificial materials in an embodiment of the present invention when the incident ultrasonic frequency is 1 MHz; Figure 5 It is a transverse normalized sound intensity curve of the ultrasonic scalpel when the incident ultrasonic frequency is 1 MHz in the device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials in an embodiment of the present invention.

[0039] like Figure 4 、 5 As shown, we conducted specific experiments to verify the actual effect of the ultrasonic knife device 100. Figure 4 and Figure 5Respectively represent the longitudinal and transverse normalized sound intensity curves of the underwater ultrasonic scalpel when the incident ultrasonic frequency is 1 MHz, where the dots represent experimental results and the lines represent simulation results. Here, the longitudinal direction indicates the direction of the maximum value of the half-maximum full width of the generated ultrasonic scalpel, and the transverse direction indicates the direction perpendicular to the longitudinal direction of the ultrasonic scalpel device 100. We use the half-maximum full width to measure the local effect of the sound wave energy, and the half-maximum full width is defined as the peak width at half the peak of the sound intensity. For the use scenario of the ultrasonic scalpel, the larger the longitudinal / transverse half-maximum full width ratio is, the better the performance of the ultrasonic scalpel. From Figure 4 、 5 We can obtain that under simulation conditions, the longitudinal full width at half maximum is 16.81 wavelengths, the transverse full width at half maximum is 1.33 wavelengths, and the longitudinal / transverse full width at half maximum ratio is about 12.64; under experimental conditions, the longitudinal full width at half maximum is 13.41 wavelengths, the transverse full width at half maximum is 1.46 wavelengths, and the longitudinal / transverse full width at half maximum ratio is about 9.18.

[0040] Figure 6 It is a normalized sound intensity distribution diagram of the local space of the acoustic wave energy of the device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials in an embodiment of the present invention when the incident ultrasonic frequency is 0.9-1.15 MHz.

[0041] like Figure 6 As shown, we conducted specific experiments to verify the broadband performance of the ultrasonic knife device 100. Figure 6 In the figure, the first row shows the normalized sound intensity distribution under simulation conditions, and the second row shows the normalized sound intensity distribution under experimental conditions. The experimental conditions are consistent with the simulation conditions. To more clearly compare the contours of the generated ultrasonic knife, we performed binary processing on the sound intensity distribution map. Figure 6 In the figure, the white area is the area with a sound intensity greater than half the peak sound intensity, and the black area is the area with a sound intensity less than half the peak sound intensity. The boundary between the black and white areas is the half-height full width outline. We can clearly see that the ultrasonic scalpel device 100 can also effectively achieve the underwater ultrasonic scalpel effect (white area) for ultrasonic waves with a frequency of 0.9-1.15MHz, and the experimental and simulation results are in good agreement. This shows that the ultrasonic scalpel device is not limited to a single operating frequency and has significant broadband performance, which has broad prospects in practical applications.

[0042] Functions and Effects of the Embodiments

[0043] According to the device for realizing underwater ultrasonic knife based on ultrasonic artificial materials involved in this embodiment, it includes a bottom base and multiple protruding units. The bottom base is in the shape of a rectangular parallelepiped. The multiple protruding units are connected to the same side of the bottom base and are arranged in sequence along the length direction of the bottom base. The protruding units are in the shape of a triangular prism and their longitudinal cross-section is a triangle. The protruding units have a rectangular bottom surface, which is connected to the bottom base. During specific use, the device is placed in water, and the ultrasonic wave is vertically incident on the surface of the device. The unique surface structure of the device is utilized to make the incident ultrasonic wave reflected and localize the ultrasonic energy in a narrow and long area in space, thereby achieving the effect of an underwater ultrasonic knife.

[0044] In addition, the underwater ultrasonic knife device has a compact structure, simple design, and low production cost. It does not require a complex circuit control system and can achieve the above functions solely by relying on its own structural characteristics. It is a passive ultrasonic knife.

[0045] Furthermore, the device is made of a material with an acoustic impedance 20 times greater than that of water, and has a wide range of optional materials and strong practicality.

[0046] Furthermore, when the incident ultrasound frequency was 1 MHz, the device generated an underwater ultrasonic scalpel with a longitudinal full-width at half-maximum of 16.81 wavelengths and a transverse full-width at half-maximum of 1.33 wavelengths, with a longitudinal / transverse full-width at half-maximum ratio of approximately 12.64, demonstrating a significant ultrasonic scalpel effect. The device also effectively achieved the same underwater ultrasonic scalpel effect for ultrasound frequencies between 0.9 and 1.15 MHz. This underwater ultrasonic scalpel device exhibits significant energy localization and a wide effective frequency range, which has significant application value in biomedical engineering fields such as medical ultrasound therapy and provides new insights into the design of multifunctional, compact acoustic components.

[0047] The above embodiments are preferred examples of the present invention and are not intended to limit the scope of protection of the present invention.

Claims

1. A device for underwater ultrasonic scalpel based on ultrasonic artificial materials, characterized in that: include: The bottom base is in the shape of a cuboid; as well as A plurality of protruding units are connected to the same side of the bottom base and are arranged in sequence along the length direction of the bottom base. The protruding unit is in the shape of a triangular prism and its longitudinal section is triangular. The protruding unit has a rectangular bottom surface, which is connected to the bottom base. The protrusion unit further has a first inclined surface and a second inclined surface, wherein the first inclined surface is perpendicular to the second inclined surface. The distance between the intersection of the first inclined surface and the second inclined surface and the bottom surface is h, h=0.5λ0, λ0 is the reference wavelength, The thickness of the bottom base is l, where l=2λ0.

2. The device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials according to claim 1, characterized in that: in, The included angle between the first inclined surface and the bottom surface is θ, and the number of the protruding units is 14. The values ​​of θ of the 14 protrusion units arranged in sequence along the length direction of the bottom base are 15°, 15°, 20°, 25°, 30°, 30°, 35°, 35°, 40°, 40°, 40°, 45°, 45°, and 45° respectively.

3. The device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials according to claim 2, characterized in that: in, The width of the bottom surface is d, λ0 is the reference wavelength.

4. The device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials according to claim 1, characterized in that: in, All of the raised units are connected in sequence.

5. The device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials according to claim 1, characterized in that: in, The bottom base is integrally formed with all the protruding units.

6. The device for realizing underwater ultrasonic scalpel based on ultrasonic artificial materials according to claim 1, characterized in that: in, The material of the device for realizing underwater ultrasonic scalpel based on ultrasonic artificial material is a material whose acoustic impedance is 20 times greater than the acoustic impedance of water.

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