CN115177327B - Device for realizing underwater ultrasonic knife based on ultrasonic artificial material - Google Patents
Device for realizing underwater ultrasonic knife based on ultrasonic artificial materialInfo
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- CN115177327B CN115177327B CN202110360686.5A CN202110360686A CN115177327B CN 115177327 B CN115177327 B CN 115177327B CN 202110360686 A CN202110360686 A CN 202110360686A CN 115177327 B CN115177327 B CN 115177327B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B3/04—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency involving focusing or reflecting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320072—Working tips with special features, e.g. extending parts
- A61B2017/320074—Working tips with special features, e.g. extending parts blade
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320072—Working tips with special features, e.g. extending parts
- A61B2017/320078—Tissue manipulating surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/70—Specific application
- B06B2201/76—Medical, dental
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Surgery (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Dentistry (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
本发明提供了一种基于超声人工材料实现水下超声刀的装置，属于声学领域，具有这样的特征，包括：底部基座，为长方体形状；以及多个凸起单元，连接在底部基座的同一个侧面上，并且沿底部基座的长度方向依次排布，其中，凸起单元为三棱柱形状并且其纵截面为三角形，凸起单元具有矩形的底面，底面与底部基座相连接。该装置结构紧凑、设计简单，不需要依靠任何电路调控的手段，仅靠自身的结构特性就可以实现超声刀的效果，属于无源被动式超声刀。同时，该装置能量局域效果显著，且不受限于单个工作频率，这在生物医学工程领域如医学超声治疗中具有非常重要的应用价值，为多功能紧凑型声学元件的设计提供了新思路。
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
The invention relates to the field of acoustics, in particular to a device for realizing an underwater ultrasonic knife based on an ultrasonic artificial material.
Background
The ultrasonic knife is a novel surgical operation device, is mainly used for treating biological tissues, such as cutting, separating, coagulating and the like, does not cause side effects of tissue drying, burning and the like, has the characteristics of less bleeding amount in operation, less damage to surrounding tissues, high safety, no smoke generation and the like, and is widely applied to surgical operations, and is called as a blood-free surgical knife. Conventional ultrasonic blades generally employ active modes, including three main components, an ultrasonic excitation power source, an ultrasonic transducer, and a blade (solid-state acoustic waveguide). The mechanism of action is that high-frequency electric energy is converted into ultrasonic mechanical (vibration) energy, and the cutter head radiates sound energy to local tissues of human body, and the purpose of operation treatment is achieved by means of a series of physiological effects generated after the ultrasonic cutter head contacts the tissues. However, such active approaches are often complex systems, low electroacoustic conversion efficiency, expensive manufacturing costs, and high maintenance costs.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a device for implementing an underwater ultrasonic blade based on an ultrasonic artificial material, which utilizes a unique surface structure of the device to enable vertically incident ultrasonic waves to be reflected and to localize ultrasonic energy in a long and narrow region in a space, thereby efficiently implementing the underwater ultrasonic blade.
The invention provides a device for realizing an underwater ultrasonic knife based on an ultrasonic artificial material, which is characterized by comprising a bottom base and a plurality of protruding units, wherein the bottom base is in a cuboid shape, the protruding units are connected to the same side face of the bottom base and are sequentially distributed along the length direction of the bottom base, the protruding units are in a triangular prism shape, the longitudinal section of each protruding unit is triangular, each protruding unit is provided with a rectangular bottom face, and the bottom faces are connected with the bottom base.
The device for realizing the underwater ultrasonic knife based on the ultrasonic artificial material can be further characterized in that the protruding unit is further provided with a first inclined plane and a second inclined plane, and the first inclined plane is perpendicular to the second inclined plane.
The device for realizing the underwater ultrasonic knife based on the ultrasonic artificial material can be further characterized in that the distance between the intersection point of the first inclined plane and the second inclined plane and the bottom surface is h, h=0.5λ 0,λ0 is a reference wavelength, the thickness of the bottom base is l, and l=2λ 0.
The device for realizing the underwater ultrasonic blade based on the ultrasonic artificial material can be further characterized in that the included angle between the first inclined surface and the bottom surface is theta, the number of the protruding units is 14, and the values of theta of the 14 protruding units which are sequentially arranged along the length direction of the bottom base are 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees, 45 degrees and 45 degrees respectively.
The device for realizing the underwater ultrasonic knife based on the ultrasonic artificial material can also have the characteristics that the width of the bottom surface is d,Lambda 0 is the reference wavelength.
The device for realizing the underwater ultrasonic knife based on the ultrasonic artificial material can be further characterized in that all the protruding units are connected in sequence.
The device for realizing the underwater ultrasonic knife based on the ultrasonic artificial material can be further characterized in that the bottom base and all the convex units are integrally formed.
The device for realizing the underwater ultrasonic knife based on the ultrasonic artificial material can be further characterized in that the material of the device for realizing the underwater ultrasonic knife based on the ultrasonic artificial material is a material with acoustic impedance which is 20 times greater than that of water.
Effects and effects of the invention
The device for realizing the underwater ultrasonic knife based on the ultrasonic artificial material comprises a bottom base and a plurality of protruding units, wherein the bottom base is in a cuboid shape, the plurality of protruding units are connected to the same side face of the bottom base and are sequentially distributed along the length direction of the bottom base, the protruding units are triangular prism-shaped and have triangular longitudinal sections, the bottom face is connected with the bottom base, the device is placed in water and enables ultrasonic waves to vertically enter the surface of the device when the device is specifically used, and the unique surface structure of the device is utilized to enable the incident ultrasonic waves to be reflected and enable ultrasonic energy to be localized in a long and narrow area in a space, so that the effect of the underwater ultrasonic knife is realized.
In addition, the device has compact structure and simple design, does not need a complex circuit regulation and control system, can realize the functions only by the structural characteristics of the device, and belongs to passive and passive ultrasonic cutters. Meanwhile, the device has obvious local effect on reflected wave energy, is not limited by single working frequency, has very important application value in the biomedical engineering field such as medical ultrasonic treatment, and provides a new thought for the design of a multifunctional compact acoustic element.
Drawings
FIG. 1 is a schematic perspective view of an apparatus for implementing an underwater ultrasonic blade based on ultrasonic artificial materials in an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a normalized sound intensity distribution diagram of a sound wave energy local space of a device for realizing an underwater ultrasonic blade based on an ultrasonic artificial material under a simulation condition in an embodiment of the present invention;
FIG. 4 is a graph of the longitudinal normalized sound intensity of an ultrasonic blade at an incident ultrasonic frequency of 1MHz for an apparatus for implementing an underwater ultrasonic blade based on ultrasonic artificial materials in an embodiment of the present invention;
FIG. 5 is a graph of the lateral normalized sound intensity of an ultrasonic blade at an incident ultrasonic frequency of 1MHz for an apparatus for implementing an underwater ultrasonic blade based on ultrasonic artificial materials in an embodiment of the present invention;
FIG. 6 is a normalized sound intensity distribution diagram of a sound wave energy local space of an apparatus for realizing an underwater ultrasonic blade based on an ultrasonic artificial material in an embodiment of the present invention at an incident ultrasonic frequency of 0.9-1.15 MHz.
Detailed Description
In order to make the technical means, creation characteristics, achievement purposes and effects achieved by the invention easy to understand, the following embodiments specifically describe the device for achieving the underwater ultrasonic blade based on the ultrasonic artificial material by referring to the accompanying drawings.
< Example >
Fig. 1 is a schematic perspective view of an apparatus for realizing an underwater ultrasonic blade based on an ultrasonic artificial material in an embodiment of the present invention.
As shown in fig. 1, the apparatus 100 for implementing an underwater ultrasonic blade based on an ultrasonic artificial material in the present embodiment includes a bottom base 10 and a plurality of convex units 20.
The bottom base 10 has a rectangular parallelepiped shape.
The plurality of protrusion units 20 are all connected to the same side of the bottom base 10 and are sequentially arranged along the length direction of the bottom base 10. All the boss units 20 are connected in sequence.
Fig. 2 is an enlarged schematic view of the portion a in fig. 1.
As shown in fig. 1 and 2, each of the protrusion units 20 includes a bottom surface 21, a first inclined surface 22, and a second inclined surface 23. The protrusion unit 20 has a triangular prism shape with a triangular longitudinal section. 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. All of the first inclined surfaces 22 of the protrusion units 20 face one direction (the-x direction in fig. 1), all of the second inclined surfaces 23 of the protrusion units 20 face the other direction (the +x direction in fig. 1), and the first inclined surfaces 22 face the second inclined surfaces 23 in the opposite direction.
The first inclined surface 22 and the bottom surface 21 have an angle θ. In the present embodiment, the number of the protrusion units 20 is 14, the values of θ of the 14 protruding units 20 sequentially arranged along the length direction of the bottom base 10 are 15 °, respectively 20 °,25 °, 30 °, 35 °,40 °, 45 °. The number of the protruding units and the inclination angle theta can be adjusted according to the requirements in practical application, and the ultrasonic knife effect is only shown as a preferred embodiment.
The intersection of the first inclined surface 22 and the second inclined surface 23 is at a distance h from the bottom surface 21, where h=0.5λ 0.
The bottom base 10 has a thickness of l, l=2λ 0. The length and width of the bottom base 10 can be adjusted according to practical needs, and in this embodiment, the length of the bottom base 10 is 45mm and the width is 40mm.
The length of the bottom surface 21 in the y direction is equal to the width of the bottom base 10, the width of the bottom surface 21 in the x direction is d,
Where lambda 0 is a reference wavelength, which is a value determined according to a specified (set) incidence frequency, specifically,Where c is the sound velocity of water (1500 m/s) and f is the specified (set) frequency of incidence (i.e., 1MHz in this embodiment). In this embodiment, the device 100 for implementing an underwater ultrasonic blade based on an ultrasonic artificial material is designed for an incident frequency of 1MHz, i.e. f is 1MHz, and corresponding λ 0 =1.5 mm. In practical applications, the specified (set) incidence frequency may be other incidence frequencies than 1 MHz.
The bottom base 10 is integrally formed with all of the boss units 20, i.e., the entire underwater ultrasonic blade device 100. The material of the entire underwater ultrasonic blade device 100 is an ultrasonic artificial material and is a material with acoustic impedance 20 times greater than that of water, such as stainless steel or other metals, alloys, etc. In this embodiment, stainless steel is selected.
In use, the projection unit 20 of the underwater ultrasonic blade device 100 faces the incident ultrasonic wave, and the ultrasonic wave is perpendicularly incident to the surface of the underwater ultrasonic blade device, which means that the incident direction of the ultrasonic wave is perpendicular to the bottom base 10. With the unique surface structure of the device 100, ultrasonic waves are reflected and ultrasonic energy is localized in a long and narrow region of space, thereby achieving the effect of an underwater ultrasonic blade.
FIG. 3 is a normalized sound intensity distribution diagram of a sound wave energy local space of an apparatus for realizing an underwater ultrasonic blade based on an ultrasonic artificial material under a simulation condition in an embodiment of the present invention.
As shown in FIG. 3, we have conducted a specific experiment to verify the effect of the underwater ultrasonic blade apparatus 100 in which the frequency of the incident ultrasonic wave is 1MHz, the background medium is set to water, and the density and sound velocity of water are 1000kg/m 3 and 1500m/s, respectively. Ultrasonic waves with the frequency of 1MHz vertically enter the surface of the ultrasonic knife device 100 from the whole space, the ultrasonic knife device 100 is made of stainless steel, the density is 7850kg/m 3, and the sound velocity is 5740m/s. The unique surface structure of the ultrasonic blade device 100 is obvious from the normalized sound intensity distribution of the whole simulation space, so that ultrasonic waves are reflected and ultrasonic energy is localized in a long and narrow area (white area) in the space, and the effect of the underwater ultrasonic blade is obviously realized.
Fig. 4 is a longitudinal normalized sound intensity curve of an ultrasonic blade when an incident ultrasonic frequency is 1MHz of a device for realizing an underwater ultrasonic blade based on an ultrasonic artificial material in an embodiment of the present invention, and fig. 5 is a transverse normalized sound intensity curve of an ultrasonic blade when an incident ultrasonic frequency is 1MHz of a device for realizing an underwater ultrasonic blade based on an ultrasonic artificial material in an embodiment of the present invention.
As shown in fig. 4 and 5, we have conducted specific experiments to verify the actual effect of the ultrasonic blade device 100. Fig. 4 and 5 show longitudinal and transverse normalized sound intensity curves of the underwater ultrasonic blade at an incident ultrasonic frequency of 1MHz, respectively, wherein the dots represent experimental results and the lines represent simulation results. Here, the longitudinal direction indicates the direction of the maximum value of the full width at half maximum of the generated ultrasonic blade, and the lateral direction indicates the direction perpendicular to the longitudinal direction of the ultrasonic blade device 100. We measure the local effect of acoustic energy in terms of full width at half maximum, which is defined as the peak width at half the peak of the intensity. For the use scene of the ultrasonic knife, the larger the full width half maximum ratio of the longitudinal direction/the transverse direction is, the better the performance of the ultrasonic knife is. From fig. 4 and 5, we can obtain, under simulation conditions, a full width at half maximum in the longitudinal direction of 16.81 wavelengths, a full width at half maximum in the transverse direction of 1.33 wavelengths, a full width at half maximum ratio of about 12.64 in the longitudinal direction/the transverse direction, a full width at half maximum in the longitudinal direction of 13.41 wavelengths, a full width at half maximum in the transverse direction of 1.46 wavelengths, and a full width at half maximum in the longitudinal direction/the transverse direction of about 9.18.
FIG. 6 is a normalized sound intensity distribution diagram of a sound wave energy local space of an apparatus for realizing an underwater ultrasonic blade based on an ultrasonic artificial material in an embodiment of the present invention at an incident ultrasonic frequency of 0.9-1.15 MHz.
As shown in fig. 6, we have conducted specific experiments to verify the wideband performance of the ultrasonic blade device 100. In fig. 6, the first row represents the normalized sound intensity distribution under the simulation conditions, and the second row represents the normalized sound intensity distribution under the experimental conditions, which are identical to the simulation conditions. To more clearly compare the contours of the resulting ultrasonic blade, we perform a binary process on the intensity profile. In fig. 6, the white region is a region with a sound intensity value greater than a half sound intensity peak value, the black region is a region with a sound intensity value less than a half sound intensity peak value, and the boundary between the black and white regions is a full width at half maximum contour line. It can be clearly seen that the ultrasonic knife device 100 can effectively realize the underwater ultrasonic knife effect (white area) on the ultrasonic waves with the frequency of 0.9-1.15MHz, and the experimental and simulation results have good consistency. This shows that the ultrasonic knife device is not limited to a single working frequency, has remarkable broadband performance, and has wide prospect in practical application.
Effects and effects of the examples
According to the device for realizing the underwater ultrasonic knife based on the ultrasonic artificial material, which is related to the embodiment, the device comprises a bottom base and a plurality of protruding units, wherein the bottom base is in a cuboid shape, the plurality of protruding units are connected to the same side face of the bottom base and are sequentially distributed along the length direction of the bottom base, the protruding units are in a triangular prism shape, the longitudinal section of each protruding unit is triangular, the protruding units are provided with rectangular bottom faces, the bottom faces are connected with the bottom base, the device is placed in water when being specifically used, ultrasonic waves are vertically incident to the surface of the device, and the unique surface structure of the device is utilized, so that the incident ultrasonic waves are reflected and ultrasonic energy is localized in one long and narrow area in a space, thereby realizing the effect of the underwater ultrasonic knife.
In addition, the underwater ultrasonic knife device has compact structure, simple design and low manufacturing cost, does not need a complex circuit regulation and control system, can realize the functions only by the structural characteristics of the device, and belongs to a passive ultrasonic knife.
Further, the device is made of materials with acoustic impedance 20 times larger than that of water, and the range of selectable materials is wide and the practicability is high.
Further, when the incident ultrasonic frequency is 1MHz, the longitudinal half-width of the generated underwater ultrasonic knife is 16.81 wavelengths, the transverse half-width is 1.33 wavelengths, the longitudinal/transverse half-width ratio is about 12.64, the ultrasonic knife effect is obvious, and the device can also effectively realize the underwater ultrasonic knife effect on ultrasonic waves with the frequency of 0.9-1.15 MHz. The underwater ultrasonic knife device has obvious energy local effect and wide effective frequency range, has very important application value in the biomedical engineering field such as medical ultrasonic treatment, and provides a new thought for the design of a multifunctional compact acoustic element.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
Claims (6)
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| CN215018540U (en) * | 2021-04-02 | 2021-12-07 | 复旦大学 | Metasurface device for realizing broadband ultrasonic scalpel |
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| JPH08320310A (en) * | 1995-05-26 | 1996-12-03 | Nippon Steel Corp | Ultrasonic generating method and laser ultrasonic device |
| JP2002542690A (en) * | 1999-04-15 | 2002-12-10 | エシコン・エンド−サージェリィ・インコーポレイテッド | Apparatus and method for tuning an ultrasonic transducer |
| CN2865753Y (en) * | 2005-11-30 | 2007-02-07 | 东南大学 | Low frequency focused ultrasound generator |
| CN101995592B (en) * | 2009-08-11 | 2012-08-08 | 财团法人工业技术研究院 | Total reflection optical device |
| DE102011011541A1 (en) * | 2011-02-17 | 2012-08-23 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Ultrasonic transducer arrangement, has concave reflector surface whose focus region lies in subsequent semi-infinite space rear to ultrasonic transducer that turns transducer surface, and reflecting body provided with reflector surface |
| WO2017059604A1 (en) * | 2015-10-10 | 2017-04-13 | 中国科学院深圳先进技术研究院 | Microfluidic system and method of controlling particles based on artificially structured acoustic field |
| CN107050672B (en) * | 2017-02-03 | 2019-05-21 | 复旦大学 | Low intensity pulsed ultrasound osteoporosis treatment instrument |
| CN211828108U (en) * | 2019-10-31 | 2020-10-30 | 复旦大学 | A Device for Ultrasonic Stealth Using Acoustic Metamaterials |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809227A (en) * | 2012-11-06 | 2014-05-21 | 青岛哈工大科创工业技术研究院 | Thin Fresnel lens with a short focal length |
| CN215018540U (en) * | 2021-04-02 | 2021-12-07 | 复旦大学 | Metasurface device for realizing broadband ultrasonic scalpel |
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