WO2003088705A1 - Ultrasonic probe - Google Patents
Ultrasonic probe Download PDFInfo
- Publication number
- WO2003088705A1 WO2003088705A1 PCT/JP2003/004740 JP0304740W WO03088705A1 WO 2003088705 A1 WO2003088705 A1 WO 2003088705A1 JP 0304740 W JP0304740 W JP 0304740W WO 03088705 A1 WO03088705 A1 WO 03088705A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ultrasonic
- layer
- ultrasonic probe
- barrier layer
- acoustic window
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/42—Details of probe positioning or probe attachment to the patient
- A61B8/4272—Details of probe positioning or probe attachment to the patient involving the acoustic interface between the transducer and the tissue
- A61B8/4281—Details of probe positioning or probe attachment to the patient involving the acoustic interface between the transducer and the tissue characterised by sound-transmitting media or devices for coupling the transducer to the tissue
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
-
- 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
- A61B8/445—Details of catheter construction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
Definitions
- the present invention relates to an ultrasonic probe, and more specifically, surrounds an ultrasonic element with an acoustic window, and clarifies an acoustic propagation liquid in the acoustic window.
- the present invention relates to a filled ultrasonic probe.
- Ultrasonic probes are used in fish detectors and ultrasonic diagnostic equipment for living organisms.
- an ultrasonic probe used in an ultrasonic diagnostic apparatus an ultrasonic element that transmits and receives ultrasonic waves is surrounded by an acoustic window, and an acoustic propagating liquid having an acoustic impedance close to that of a living body is enclosed in the acoustic window. Filled ones are known (for example, Japanese Patent Application Laid-Open No. H08-98341).
- An object of the present invention is to provide an ultrasonic probe capable of suppressing transmission of an acoustic propagation liquid from an acoustic window and maintaining pressure in the acoustic window.
- an ultrasonic probe includes an element made of a piezoelectric body that transmits and receives ultrasonic waves, and an ultrasonic wave that fills an acoustic window surrounding the element with an ultrasonic wave propagating liquid.
- the acoustic window is formed with a barrier layer that blocks liquid and gas permeation.
- barrier layer for example, a layer containing at least one of a polyparaxylylene layer and a metal layer can be used.
- FIG. 1 is a schematic sectional view showing an example of the ultrasonic probe according to the present invention.
- FIG. 2 is an enlarged cross-sectional view showing a storage section of the ultrasonic probe.
- FIG. 3 is an enlarged sectional view showing an acoustic window of the ultrasonic probe.
- the ultrasonic probe of the present invention includes an ultrasonic element for transmitting and receiving ultrasonic waves, an acoustic window surrounding the ultrasonic element, and an ultrasonic wave filled in the acoustic window. And propagation fluid.
- the acoustic window has a barrier layer that inhibits the permeation of liquid and gas.
- the barrier layer is preferably formed on an inner wall surface of the acoustic window.
- polyparaxylylene or a derivative thereof can be used.
- the polyparaxylylene derivative a polyparaxylylene derivative in which at least one of the hydrogen atoms of each aromatic ring is substituted with, for example, chlorine, bromine, fluorine, an alkyl group, an amino group, or the like can be used.
- the thickness of the polyparaxylylene layer is preferably from 0.1 m to 500 m, and more preferably from 1 m to 500 m, since it has a good liquid permeation inhibiting property and the film formation is easy. It is preferably from l to 100.
- the polyparaxylylene layer can be formed as a polyparaxylylene resin layer by chemical vapor deposition of diparaxylylene or a derivative thereof.
- diparaxylylene for example, the product name “Parylene” manufactured by Three Ponds can be applied.
- diparaxylylene derivative a derivative in which at least one hydrogen of each aromatic ring of diparaxylylene is substituted with, for example, chlorine, bromine, fluorine, an alkyl group, an amino group, or the like can be used.
- diparaxylene dima-I (diparaxylene)
- the obtained diparaxylene is heated to about 600 ° C under low pressure and thermally decomposed as shown in the following formula [Fig. 2], and the paraxylylene radical gas intermediate is obtained.
- This gas is very reactive, and when it is led to the inner wall of the acoustic window, it condenses and polymerizes on its surface, forming a layer of polyparaxylylene.
- the molecular weight of this polyparaxylylene is about 500,000.
- n represents a repeating unit.
- the polyparaxylylene layer can be formed by vapor deposition of diparaxylene or a derivative thereof.
- the deposition rate is generally between 0.1 and 0.2 mZ. According to the method using this vapor deposition, an extremely thin layer can be formed, and permeation and outflow of the acoustic propagation liquid can be prevented.
- a metal layer may be used as the barrier layer.
- the metal layer for example, a metal such as aluminum, gold, nickel, and platinum, preferably, a metal such as aluminum and gold can be used.
- the thickness of the metal layer is preferably 0.1 m to 30 m from the viewpoint of having good liquid permeation inhibiting property and facilitating film formation.
- the metal layer can be formed by, for example, an evaporation method. Alternatively, it may be formed by attaching a metal thin film. As a result, a thin film layer can be formed, and outflow due to permeation of the acoustic propagation liquid can be prevented.
- FIG. 1 is a cross-sectional view showing an example of the structure of the ultrasonic probe according to the present invention.
- This ultrasonic probe is a probe used for ultrasonic diagnosis. A part of the probe is inserted into a body cavity of a subject, and an ultrasonic scan is performed in the body cavity. It is a tentacle.
- This ultrasonic probe includes an insertion portion 100 inserted into a body cavity, and a grip portion 200 held outside the body cavity by an operator.
- the insertion section 100 includes a storage section 10 disposed at a distal end thereof, and a rod section 20 for disposing the storage section 10 at a desired position in a body cavity.
- the storage unit 10 is configured by joining an acoustic window 4 and a frame 8, and stores an ultrasonic element unit therein.
- FIG. 1 the structure inside the storage unit 10 is simplified for simplicity.
- FIG. 2 is an enlarged cross-sectional view showing a detailed structure inside the storage unit 10.
- the acoustic window 4 is not particularly limited, and the same as the conventional acoustic window can be used. However, it is preferable to use poly (methylpentene-1) having a thickness of about 1 to 3 mm. This is because the extracted image is not distorted because there is little deformation when pressed against the body surface, and the thickness is such that ultrasonic attenuation can be tolerated.
- the barrier layer 3 is formed on the inner wall surface of the acoustic window 4 as described above.
- the barrier layer 3 is preferably formed in close contact with the inner wall surface of the acoustic window 4 as shown in FIG.
- the acoustic window 4 having such a barrier layer 3 has a very small decrease in the amount of liquid due to liquid permeation, and there is almost no drop in internal pressure. Can be secured.
- the barrier layer 3 is a polyparaxylylene layer having a thickness of 5 m.
- this polyparaxylylene layer can be efficiently formed by, for example, vapor deposition of “Parylene” (trade name, manufactured by Three Bond Corporation). Can be.
- the polyparaxylylene layer is a thick film, or when the window has a simple shape, it is also possible to adopt a bonding method.
- the barrier layer 3 it is also possible to use a deposited film or a sticking film of aluminum, gold, or the like.
- the acoustic window 4 of the storage unit 10 is filled with a degassed acoustic propagation liquid 5.
- a degassed acoustic propagation liquid 5 for example, physiological saline or the like can be used.
- a through hole is provided in the frame 8, and a pipe 9 extending to the drip portion 200 through the rod portion 20 is connected to the through hole.
- the propagation liquid 5 is filled.
- the acoustic window 4 is configured such that the acoustic propagation liquid 5 communicates with the spare tank 12 described later via the pipe 9.
- the ultrasonic element unit includes the vibrator 2 and a rotation mechanism that holds and rotates the vibrator 2.
- An acoustic lens 7 is arranged on the ultrasonic wave transmitting / receiving surface of the vibrator 2.
- the rotating mechanism is, for example, a self-rotating motor, a rotor 1 having a vibrator 2 mounted thereon, a bracket 6 rotatably supporting the rotor, and a rotation for applying a rotating force to the rotor 1.
- a drive source magnet
- the vibrator 2 is rotated in conjunction with the rotation of the rotor 1, and mechanical scanning of ultrasonic waves by a circular orbit can be realized.
- a plurality of signal lines for transmitting and receiving electric signals for driving the vibrator 2 and the rotation mechanism are drawn out from the ultrasonic element unit. It is led to 200.
- a spare tank 12 filled with the acoustic propagation liquid 5 is stored in the drip portion 200.
- This spare tank 12 absorbs fluctuations in the internal pressure in the acoustic window 4 due to temperature changes and the like, and maintains the working pressure.
- This spare tank 12 is connected to the pipe 9 through the nozzle 11
- the acoustic propagation liquid 5 is configured to communicate with the window 4.
- the spare tank 12 is formed of an elastic container whose capacity can be changed according to the filling amount when the liquid is filled inside.
- a barrier layer is formed on the wall surface of the auxiliary tank 12, similarly to the wall surface of the acoustic window 4. Also, it is preferable that a barrier layer is similarly formed on the wall surface of the pipe 9 connecting the storage section 10 and the spare tank 12.
- a cable 300 is drawn out from the drip portion 200, and the ultrasonic probe is connected to the ultrasonic diagnostic apparatus via the cable 300.
- an ultrasonic probe is placed in the vicinity of the test object, the rotation mechanism is driven, and the mouth 1 is rotated. As a result, the vibrator 2 mounted on the rotor 1 rotates.
- an electric signal (transmission signal) from the ultrasonic diagnostic apparatus is transmitted to the transducer 2.
- the transmission signal is converted into an ultrasonic wave in the transducer 2, propagates through the acoustic propagation liquid 5, passes through the acoustic window 4, and is transmitted to the subject.
- This ultrasonic wave is reflected by the subject, and a part of the reflected wave is received by the vibrator 2, converted into an electric signal (received signal), and transmitted to the ultrasonic diagnostic apparatus.
- the received signal is converted into image data in the ultrasonic diagnostic apparatus.
- the barrier layer 3 on the inner surface of the acoustic window 4, the infiltration or penetration of the acoustic propagation liquid 5 into the material of the acoustic window 4 is suppressed, and the pressure change of the acoustic propagation liquid 5 is reduced. be able to. Therefore, the change in the internal pressure of the acoustic window 4 can be reduced and its shape can be maintained, and since the acoustic propagating liquid 5 is always sufficiently filled, A faithful transmission of ultrasonic waves can be performed.
- the barrier layer 3 is provided on the inner wall surface of the acoustic window 4, but may be provided on the outer wall surface of the acoustic window.
- the acoustic window is composed of a plurality of layers, the same effect can be obtained by providing the acoustic window between the layers.
- a penetrating portion may be provided in a part of the parier layer in order to increase the adhesion between the layers constituting the window.
- an example in which the mechanical scanning type in which the vibrator is rotated in a short time is employed, but the electronic scanning type in which an array element in which a plurality of vibrators are arranged in a strip shape is used. It can be implemented similarly.
- the barrier layer is formed of a polyparaxylylene layer or a metal layer
- the barrier layer may be formed of a multilayer film including a polyparaxylylene layer and a metal layer.
- the present invention is not limited to this, and since the transmittance of the resin differs depending on the acoustic propagation liquid, it is similarly possible to provide a film having the corresponding physical properties.
- the ultrasonic probe of the present invention provides an ultrasonic probe in which the barrier layer is provided on the inner surface of the acoustic window, whereby the infiltration and transmission of the acoustic propagation liquid into the acoustic window material are suppressed. can do.
- Such an ultrasonic probe can be used, for example, for an ultrasonic diagnostic apparatus.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Surgery (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- Biophysics (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Chemical & Material Sciences (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002482822A CA2482822A1 (en) | 2002-04-17 | 2003-04-15 | Ultrasonic probe |
| EP03717580A EP1501331B1 (en) | 2002-04-17 | 2003-04-15 | Ultrasonic probe |
| US10/511,478 US7833162B2 (en) | 2002-04-17 | 2003-04-15 | Ultrasonic probe |
| KR1020047016624A KR100656299B1 (ko) | 2002-04-17 | 2003-04-15 | 초음파 탐촉자 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002115355A JP2003309890A (ja) | 2002-04-17 | 2002-04-17 | 超音波探触子 |
| JP2002-115355 | 2002-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003088705A1 true WO2003088705A1 (en) | 2003-10-23 |
Family
ID=29243421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2003/004740 Ceased WO2003088705A1 (en) | 2002-04-17 | 2003-04-15 | Ultrasonic probe |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7833162B2 (ja) |
| EP (1) | EP1501331B1 (ja) |
| JP (1) | JP2003309890A (ja) |
| KR (1) | KR100656299B1 (ja) |
| CN (1) | CN100588285C (ja) |
| CA (1) | CA2482822A1 (ja) |
| WO (1) | WO2003088705A1 (ja) |
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| KR20170117205A (ko) | 2004-10-06 | 2017-10-20 | 가이디드 테라피 시스템스, 엘.엘.씨. | 초음파 치료 시스템 |
| US11235179B2 (en) | 2004-10-06 | 2022-02-01 | Guided Therapy Systems, Llc | Energy based skin gland treatment |
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| US11207548B2 (en) | 2004-10-07 | 2021-12-28 | Guided Therapy Systems, L.L.C. | Ultrasound probe for treating skin laxity |
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| US12102473B2 (en) | 2008-06-06 | 2024-10-01 | Ulthera, Inc. | Systems for ultrasound treatment |
| KR102746886B1 (ko) | 2008-06-06 | 2024-12-27 | 얼테라, 인크 | 초음파 치료 시스템 |
| EP2382010A4 (en) | 2008-12-24 | 2014-05-14 | Guided Therapy Systems Llc | METHOD AND SYSTEMS FOR FAT REDUCTION AND / OR TREATMENT OF CELLULITE |
| WO2011146139A2 (en) * | 2010-05-21 | 2011-11-24 | Misonix Incorporated | Ultrasonic transducer assembly |
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| US9510802B2 (en) | 2012-09-21 | 2016-12-06 | Guided Therapy Systems, Llc | Reflective ultrasound technology for dermatological treatments |
| JP6382202B2 (ja) * | 2012-10-12 | 2018-08-29 | マフィン・インコーポレイテッドMuffin Incorporated | 超音波トランスデューサを備えた医療装置 |
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| JP6880953B2 (ja) * | 2016-04-12 | 2021-06-02 | コニカミノルタ株式会社 | 超音波探触子 |
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| CA3022003A1 (en) | 2016-08-16 | 2018-02-22 | Ulthera, Inc. | Systems and methods for cosmetic ultrasound treatment of skin |
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- 2002-04-17 JP JP2002115355A patent/JP2003309890A/ja active Pending
-
2003
- 2003-04-15 EP EP03717580A patent/EP1501331B1/en not_active Expired - Lifetime
- 2003-04-15 CA CA002482822A patent/CA2482822A1/en not_active Abandoned
- 2003-04-15 KR KR1020047016624A patent/KR100656299B1/ko not_active Expired - Fee Related
- 2003-04-15 WO PCT/JP2003/004740 patent/WO2003088705A1/ja not_active Ceased
- 2003-04-15 US US10/511,478 patent/US7833162B2/en not_active Expired - Fee Related
- 2003-04-15 CN CN03808619A patent/CN100588285C/zh not_active Expired - Fee Related
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| US4517985A (en) | 1982-06-01 | 1985-05-21 | Diasonics, Inc. | Neonate ultrasonic scanner |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP1501331B1 (en) | 2011-06-22 |
| US7833162B2 (en) | 2010-11-16 |
| US20050184624A1 (en) | 2005-08-25 |
| CN100588285C (zh) | 2010-02-03 |
| CN1647574A (zh) | 2005-07-27 |
| EP1501331A1 (en) | 2005-01-26 |
| JP2003309890A (ja) | 2003-10-31 |
| KR20040103961A (ko) | 2004-12-09 |
| CA2482822A1 (en) | 2003-10-23 |
| KR100656299B1 (ko) | 2006-12-11 |
| EP1501331A4 (en) | 2008-12-17 |
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