KR20120136985A - Ultrasound probe with improved skin penetration efficiency of ultrasound energy - Google Patents
Ultrasound probe with improved skin penetration efficiency of ultrasound energy Download PDFInfo
- Publication number
- KR20120136985A KR20120136985A KR1020110056242A KR20110056242A KR20120136985A KR 20120136985 A KR20120136985 A KR 20120136985A KR 1020110056242 A KR1020110056242 A KR 1020110056242A KR 20110056242 A KR20110056242 A KR 20110056242A KR 20120136985 A KR20120136985 A KR 20120136985A
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- South Korea
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- ultrasonic
- housing
- acoustic impedance
- coating layer
- skin
- Prior art date
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
- A61B5/0531—Measuring skin impedance
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H15/00—Measuring mechanical or acoustic impedance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
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- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- General Physics & Mathematics (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Dermatology (AREA)
- Immunology (AREA)
- Acoustics & Sound (AREA)
- Surgical Instruments (AREA)
Abstract
Description
The present invention relates to an ultrasonic probe, and more particularly, to an ultrasonic probe with improved skin penetration efficiency of ultrasonic energy.
Ultrasonic examination is a method of examining abnormalities of tissues by ultrasound, and is a method of examining abnormalities of tissues by shooting an ultrasound wave at a specific site and reflecting the reflection image on the CRT. It is mainly used for the diagnosis of tumor tissues and fetuses. For the ultrasound test, ultrasound is applied to tissues using an ultrasound probe that oscillates the ultrasound.
The oscillated ultrasound is absorbed, reflected, refracted, attenuated, etc. while being applied to the tissue from the ultrasonic probe. In particular, the reflection of the ultrasonic waves occurs at the interface of different media, the amount of reflection of the ultrasonic energy is determined according to the acoustic impedance difference and the incident angle. Acoustic impedance, a kind of resistance to sound, is material dependent.
The ultrasonic probe may include a piezoelectric element and a housing, which generate ultrasonic waves, and the skin permeation efficiency of the ultrasonic energy generated by the piezoelectric element varies depending on the material of the housing. That is, the piezoelectric element, the housing, and the skin tissue all have different acoustic impedances. If the acoustic impedances of the two parts forming the interface are the same, the ultrasonic waves completely pass through the interface, but if the acoustic impedances are different, the ultrasonic waves are reflected from the interface. Therefore, there is a difference in acoustic impedance depending on what material the housing is made of, and a large difference occurs in the transmission efficiency of ultrasonic waves, which is a kind of sound waves.
As described above, the conventional ultrasonic probe has a large difference in the ultrasonic energy skin transmittance according to the material constituting the housing, and thus, ultrasonic energy cannot effectively penetrate the skin. In order to effectively transmit ultrasonic energy to skin tissue, ultrasonic propagation media such as gel is used between the ultrasonic probe and the body contact surface, but it is not possible to overcome the limitations of reflection and attenuation generated by the ultrasonic probe itself. There is no problem.
The present invention has been proposed to solve the above problems of the conventionally proposed methods, by forming a coating layer on the outer surface of the housing of the ultrasonic probe and having the acoustic impedance of the coating layer has a value between the housing and the acoustic impedance of the skin, It is an object of the present invention to provide an ultrasonic probe having improved skin penetration efficiency of ultrasonic energy, which can improve skin penetration efficiency of ultrasonic energy.
According to an aspect of the present invention, an ultrasonic probe having an improved skin penetration efficiency of ultrasonic energy,
An ultrasonic oscillator for oscillating ultrasonic waves; And
A housing housing the ultrasonic oscillation unit and having a coating layer formed on an outer surface thereof;
The acoustic impedance of the coating layer is characterized in that the configuration is a value between the acoustic impedance of the housing and the acoustic impedance of the affected tissue.
Preferably, the coating layer,
It may contain a Teflon compound.
Preferably,
The acoustic impedance of the coating layer may be smaller than the acoustic impedance of the housing and greater than the acoustic impedance of the affected tissue.
More preferably,
The acoustic impedance of the ultrasonic oscillator may be greater than the acoustic impedance of the housing.
According to the ultrasonic probe having improved skin penetration efficiency of ultrasonic energy proposed by the present invention, an ultrasonic wave is generated by forming a coating layer on the outer surface of the ultrasonic probe and having the acoustic impedance of the coating layer have a value between the housing and the acoustic impedance of the skin. The skin permeation efficiency of energy can be improved.
1 shows a conventional ultrasonic probe.
2 is a cross-sectional view of a conventional ultrasonic probe.
3 is a view illustrating an ultrasonic probe with improved skin penetration efficiency of ultrasonic energy according to an embodiment of the present invention.
4 is a cross-sectional view of an ultrasonic probe having improved skin penetration efficiency of ultrasonic energy according to an embodiment of the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order that those skilled in the art can easily carry out the present invention. In the following detailed description of the preferred embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In the drawings, like reference numerals are used throughout the drawings.
In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . In addition, the term 'comprising' of an element means that the element may further include other elements, not to exclude other elements unless specifically stated otherwise.
1 is a view showing a conventional
3 is a view showing the
The
The
The
In more detail, the ratio of the reflected energy with respect to the incident energy is called a reflection coefficient (Γ). The reflection coefficient is if the ultrasonic waves are incident from the medium 1 to proceed with the medium 2 by the acoustic impedance of the incident medium Ζ acoustic impedance of the first and second refractive medium Ζ determined as the following formula.
As can be seen in Equation 1, the greater the difference in acoustic impedance, the greater the reflectance at the interface of the medium. When using the conventional
As shown in Table 1, the amount of ultrasonic energy reflection is only 0.1% at the interface between the gel for ultrasound and the skin, and there is little reflection of the ultrasonic incident energy at the interface between the soft tissue and the soft tissue with similar acoustic impedance. However, more than 30% of the ultrasound energy is reflected at the soft tissue and bone boundaries, where the acoustic impedances differ significantly. In addition, in Table 1, since the reflectance from the
As described above, in order to solve the problem in which the ultrasonic waves are reflected due to the difference in acoustic impedance, ultrasonic gel or the like is used, but also in the structure of the
Therefore, by forming a
Meanwhile, in the present invention, the
As shown in Table 2, Teflon is similar in sound velocity to affected tissue such as fat and soft tissue. Therefore, the reflectance of the ultrasonic energy is low, and by forming the
The present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics of the invention.
10: conventional ultrasonic probe
11, 110:
100: ultrasonic probe 130: coating layer
Claims (4)
An ultrasonic oscillator for oscillating ultrasonic waves; And
A housing housing the ultrasonic oscillation unit and having a coating layer formed on an outer surface thereof;
And the acoustic impedance of the coating layer is a value between the acoustic impedance of the housing and the acoustic impedance of the affected tissue.
An ultrasonic probe with improved skin permeation efficiency of ultrasonic energy, comprising a teflon compound.
And the acoustic impedance of the coating layer is smaller than the acoustic impedance of the housing and larger than the acoustic impedance of the affected tissue.
The ultrasonic impedance of the ultrasonic oscillation unit is greater than the acoustic impedance of the housing, characterized in that the ultrasonic probe with improved skin penetration efficiency of the ultrasonic energy.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020110056242A KR20120136985A (en) | 2011-06-10 | 2011-06-10 | Ultrasound probe with improved skin penetration efficiency of ultrasound energy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110056242A KR20120136985A (en) | 2011-06-10 | 2011-06-10 | Ultrasound probe with improved skin penetration efficiency of ultrasound energy |
Publications (1)
Publication Number | Publication Date |
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KR20120136985A true KR20120136985A (en) | 2012-12-20 |
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KR1020110056242A KR20120136985A (en) | 2011-06-10 | 2011-06-10 | Ultrasound probe with improved skin penetration efficiency of ultrasound energy |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160040126A (en) * | 2014-10-02 | 2016-04-12 | 삼성전자주식회사 | Attachment for ultrasound probe, ultrasound probe, apparatus for inspecting ultrasound, and method of inspecting ultrasound |
KR20210147731A (en) | 2020-05-29 | 2021-12-07 | 서울대학교산학협력단 | Ultrasonic transmission apparatus and control method of waves |
KR20230077521A (en) | 2021-11-25 | 2023-06-01 | 재단법인 파동에너지 극한제어 연구단 | Ultrasonic transmission apparatus and control method of waves |
-
2011
- 2011-06-10 KR KR1020110056242A patent/KR20120136985A/en not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160040126A (en) * | 2014-10-02 | 2016-04-12 | 삼성전자주식회사 | Attachment for ultrasound probe, ultrasound probe, apparatus for inspecting ultrasound, and method of inspecting ultrasound |
KR20210147731A (en) | 2020-05-29 | 2021-12-07 | 서울대학교산학협력단 | Ultrasonic transmission apparatus and control method of waves |
KR20230077521A (en) | 2021-11-25 | 2023-06-01 | 재단법인 파동에너지 극한제어 연구단 | Ultrasonic transmission apparatus and control method of waves |
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