JPS59158699A - Ultrasonic wave probe - Google Patents
Ultrasonic wave probeInfo
- Publication number
- JPS59158699A JPS59158699A JP3311383A JP3311383A JPS59158699A JP S59158699 A JPS59158699 A JP S59158699A JP 3311383 A JP3311383 A JP 3311383A JP 3311383 A JP3311383 A JP 3311383A JP S59158699 A JPS59158699 A JP S59158699A
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic wave
- ultrasonic
- oscillator
- absorbing body
- air bubbles
- 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.)
- Pending
Links
- 239000000523 sample Substances 0.000 title claims abstract description 8
- 239000006096 absorbing agent Substances 0.000 claims description 22
- 229920001971 elastomer Polymers 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000002604 ultrasonography Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、被検体に超音波を送波し、被検体内部におけ
るその反射波により被検体内部の情報を得る超音波診断
装置において、その超音波の送受波に使用して好適な超
音波接触子に関する。Detailed Description of the Invention (a) Industrial Application Field The present invention provides an ultrasonic diagnostic apparatus that transmits ultrasonic waves to a subject and obtains information inside the subject by the reflected waves inside the subject. The present invention relates to an ultrasonic contactor suitable for use in transmitting and receiving ultrasonic waves.
（ロ）従来技術
従来の超音波接触子には、第１図に示すように、圧電効
果を有するセラミック基板すの両面に電１夕ｃ、 ｃ
２を形成してなる振動子ａに対して、その被検体側の表
面に人体とのインピーダンスマツチングより超音波の透
過性をよくする整合層ｄを設けるとともに、振動子ａの
整合層ｄとは反対の褪面に超音波吸収体ｅを設けたもの
がある。そして、この超音波吸収体ｅによって振動子の
Ｑを適度にダンピングして不要波形を吸収し、−また、
被検体の反対側から出る超音波を吸収するようにしてい
る。しかしながら、従来の超音波吸収体ｅは、たとえば
ンリコンゴムに金属粉末を混入し、脱泡後硬化させたも
のであるため、超音波の吸収特性かいまひとつ満足でき
るものではなかった。すなわち、この超音波吸収体ｅで
は、超音波の減衰能か未だ小さいため振動子ａから超音
波吸収体ｅ内に入射した超音波人か超音波＠収体ｅの裏
面ｅ、で反射され、再び振動子ａに返ってくるという不
具合を生じる。この不具合を防止するには超音波吸収体
ｅの厚さを大きくせねばならす、このため結果的に超音
波探触子か重くなり操作性に欠けたものとなる。(B) Prior art As shown in Figure 1, a conventional ultrasonic contactor has a piezoelectric ceramic substrate with an electric current on both sides.
A matching layer d is provided on the surface of the transducer a formed by the transducer 2, which improves ultrasonic transmission through impedance matching with the human body. There is one in which an ultrasonic absorber e is provided on the opposite faded surface. Then, the ultrasonic absorber e moderately damps the Q of the vibrator to absorb unnecessary waveforms, and -
It is designed to absorb ultrasound waves emitted from the opposite side of the subject. However, since the conventional ultrasonic absorber e is made by mixing metal powder into silicone rubber, defoaming and curing the mixture, the ultrasonic absorber e does not have satisfactory ultrasonic absorption characteristics. That is, in this ultrasonic absorber e, since the attenuation ability of the ultrasonic wave is still small, the ultrasonic wave incident from the transducer a into the ultrasonic absorber e is reflected by the back surface e of the ultrasonic wave @ the absorber e, A problem arises in that it returns to the vibrator a again. To prevent this problem, it is necessary to increase the thickness of the ultrasonic absorber e, which results in the ultrasonic probe becoming heavy and lacking in operability.
（ハ） 目的
本発明（は上記の問題点に鑑みて外されたものであって
、超音波の吸収特性が良好な超音波吸収体を召Ｉること
かでき、これによって、軽量で操作性に優れた超音波接
触子を提供することを目的とする。(c) Purpose The present invention was removed in view of the above problems, and it is possible to create an ultrasonic absorber with good ultrasonic absorption characteristics, which is lightweight and easy to operate. The purpose is to provide an excellent ultrasonic contactor.
に）構成
本発明はこのよう、な目的を達成するため、振動子の失
血に合成樹脂、ゴム等の内部に多数の気泡を・含有させ
てなる超音波吸収体を固着するように１−２でいる。2) Structure In order to achieve the above object, the present invention has a structure in which an ultrasonic absorber made of synthetic resin, rubber, etc. containing a large number of air bubbles is fixed to the blood loss of the transducer. I'm here.
（ホ）実施例
以下、本発明を第２図および第３図の実施例に基ついて
詳細に説明する。(e) Examples The present invention will be explained in detail below based on the examples shown in FIGS. 2 and 3.
第２図は本発明の超音波接触子の斜視図、第１３図は第
２図のＩＩＩ −ｒｌｌ線に浴う断面図である。これら
の図において、１は超音波接触子、２は複数に分割され
た振動子である。この各振動子２け１．チタン酸ジルコ
ン酸鉛ＰＺＴなとのセラミック基板３の両ズ′・１向而
にそれぞれ電極４，５を形成して構成される。６は、こ
の振動子２の被検体側の表面に固着された音響整合用の
整合層である。寸だ、振動子２の整合層６と反対側の裏
面には超音波吸収体７が同着されている。この超音波吸
収体７は、本例の場合、ウレタン系樹脂（商品名ＣＰＣ
−１９、エマーソ／アンドカミンク社製）に多数の気泡
８を含有してなるものである。また、この超音波吸収体
７の製作は、２液を混合する際、同時に気泡を混入し、
その後、２５°Ｃ前後で２４時間硬化させることにより
’ｔｌられる。超音波吸収体７の材料と（２てば、本例
に限らす、多数の気／＠８を含有できるものであればよ
く、他の合成樹脂や、ゴム等を適用することもてきる。FIG. 2 is a perspective view of the ultrasonic contactor of the present invention, and FIG. 13 is a sectional view taken along line III-rll in FIG. 2. In these figures, 1 is an ultrasonic contactor, and 2 is a transducer divided into a plurality of parts. Each of these 2 oscillators 1. It is constructed by forming electrodes 4 and 5 on both sides of a ceramic substrate 3 made of lead zirconate titanate PZT, respectively. Reference numeral 6 denotes a matching layer for acoustic matching fixed to the surface of the vibrator 2 on the subject side. In fact, an ultrasonic absorber 7 is attached to the back surface of the vibrator 2 opposite to the matching layer 6. In this example, the ultrasonic absorber 7 is made of urethane resin (trade name: CPC).
-19, manufactured by Emerso/Andkaming Co., Ltd.) containing a large number of air bubbles 8. In addition, when manufacturing this ultrasonic absorber 7, when mixing two liquids, air bubbles are mixed at the same time.
Thereafter, it is cured by curing at around 25°C for 24 hours. The material of the ultrasonic absorber 7 may be any material that can contain a large number of gases (limited to this example), and other synthetic resins, rubber, etc. may also be used.
従って、振動子２から超音波吸収体ｅ内に入射された・
ｊ召音波λに「、その内部を通過する間に、多数の気泡
８に」二って充分に散乱、吸収される。このため、超音
波吸収体７の吸血７ａでたとえ超音波λか反射されても
、その強度は、かなり弱くなっており、しかも再度、超
音波吸収体７を通過する間に気泡８で散乱、吸収きれる
ので、反射波は振動子２には到達しない。Therefore, the ・
The sound wave λ is sufficiently scattered and absorbed by a large number of bubbles 8 while passing through its interior. Therefore, even if the ultrasonic wave λ is reflected by the blood suction 7a of the ultrasonic absorber 7, its intensity will be considerably weaker, and moreover, while it passes through the ultrasonic absorber 7 again, it will be scattered by the air bubbles 8. Since the reflected waves are completely absorbed, they do not reach the vibrator 2.
ちなみに、上記ウレタン系（酊脂（ＣＰＣ−１９）を用
い、内部に気泡を含有させた超音波吸収体７と、気泡を
除いたものとの超音波吸収特性をｈＩＭべた結果、前者
のものは後者のものの約すの厚みで同一の吸収特性を示
すことが分った。By the way, as a result of hIM comparing the ultrasonic absorption characteristics of the ultrasonic absorber 7 that uses the above urethane-based resin (CPC-19) and contains air bubbles inside, and the ultrasonic absorber 7 that does not contain air bubbles, the former has It was found that the latter exhibits the same absorption characteristics depending on the thickness of the cup.
（へ）効果
以上のように、本発明によれば、振動子の裏向に←１１
、内部に気泡を含有する超音波吸収体が固着されている
ので、この気泡によって、超音波は充分に散乱、吸収さ
れる。従って、超音波吸収体の厚みも従来に比べてかな
り薄くできる。このため、超音波探触子全体が軽量とな
り操作もしやすくなるという優れた効果か得られる。(f) Effect As described above, according to the present invention, the ←11
Since the ultrasonic absorber containing air bubbles is fixed inside, the ultrasonic waves are sufficiently scattered and absorbed by the air bubbles. Therefore, the thickness of the ultrasonic absorber can be made considerably thinner than in the past. Therefore, an excellent effect can be obtained in that the entire ultrasonic probe becomes lightweight and easy to operate.
第１図は従来例を、第２図および第３図は本発明の実施
例をそれぞれ示すもので、第１図は超音波探触子の断面
図、第２図は超音波探触子の斜視図、第３図は第２図の
！ＩＩ −ｉｌｌ線に沿う断面図である。
１・・超音波探触子、２・・振動子、７・・超音波吸収
体、８・・気泡。
特許出願人 株式会社島津製作所
−１代 理 人 弁理士 岡田和秀６３
第１図Figure 1 shows a conventional example, and Figures 2 and 3 show embodiments of the present invention. Figure 1 is a cross-sectional view of an ultrasound probe, and Figure 2 is a cross-sectional view of an ultrasound probe. The perspective view, Figure 3, is the same as Figure 2! FIG. 2 is a cross-sectional view taken along line II-ill. 1. Ultrasonic probe, 2. Vibrator, 7. Ultrasonic absorber, 8. Bubbles. Patent Applicant Shimadzu Corporation - 1st Attorney Kazuhide Okada 63 Figure 1
Claims (1)
多数の気泡を含有させてなる超音波吸収体がし１１着さ
れていることを特徴とする超音波探触子。(1) An ultrasonic probe characterized in that an ultrasonic absorber made of synthetic resin, rubber, etc. containing a large number of air bubbles is attached to the back surface of the vibrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3311383A JPS59158699A (en) | 1983-02-28 | 1983-02-28 | Ultrasonic wave probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3311383A JPS59158699A (en) | 1983-02-28 | 1983-02-28 | Ultrasonic wave probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59158699A true JPS59158699A (en) | 1984-09-08 |
Family
ID=12377590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3311383A Pending JPS59158699A (en) | 1983-02-28 | 1983-02-28 | Ultrasonic wave probe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59158699A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63126283A (en) * | 1986-11-14 | 1988-05-30 | Ngk Spark Plug Co Ltd | Piezoelectric probe |
| JPH01157582A (en) * | 1986-09-01 | 1989-06-20 | Hiroshi Shimizu | Linbo3 substrate with partial reverse polarization region, and manufacture and application of the same |
| WO1993011527A1 (en) * | 1991-12-05 | 1993-06-10 | Robert Bosch Gmbh | Ultrasonic damping material |
| WO2010039950A1 (en) * | 2008-10-02 | 2010-04-08 | Eberle Michael J | Optical ultrasound receiver |
| US9192307B2 (en) | 2002-10-07 | 2015-11-24 | Vascular Imaging Corporation | Systems and methods for minimally-invasive optical-acoustic imaging |
| US9532766B2 (en) | 1998-03-05 | 2017-01-03 | Vascular Imaging Corporation | Optical-acoustic imaging device |
| US9557490B2 (en) | 2005-11-22 | 2017-01-31 | Vascular Imaging Corporation | Optical imaging probe |
-
1983
- 1983-02-28 JP JP3311383A patent/JPS59158699A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01157582A (en) * | 1986-09-01 | 1989-06-20 | Hiroshi Shimizu | Linbo3 substrate with partial reverse polarization region, and manufacture and application of the same |
| JPS63126283A (en) * | 1986-11-14 | 1988-05-30 | Ngk Spark Plug Co Ltd | Piezoelectric probe |
| WO1993011527A1 (en) * | 1991-12-05 | 1993-06-10 | Robert Bosch Gmbh | Ultrasonic damping material |
| US9532766B2 (en) | 1998-03-05 | 2017-01-03 | Vascular Imaging Corporation | Optical-acoustic imaging device |
| US9192307B2 (en) | 2002-10-07 | 2015-11-24 | Vascular Imaging Corporation | Systems and methods for minimally-invasive optical-acoustic imaging |
| US9339192B2 (en) | 2002-10-07 | 2016-05-17 | Vascular Imaging Corporation | Systems and methods for minimally-invasive optical-acoustic imaging |
| US9557490B2 (en) | 2005-11-22 | 2017-01-31 | Vascular Imaging Corporation | Optical imaging probe |
| WO2010039950A1 (en) * | 2008-10-02 | 2010-04-08 | Eberle Michael J | Optical ultrasound receiver |
| US9078561B2 (en) | 2008-10-02 | 2015-07-14 | Vascular Imaging Corporation | Optical ultrasound receiver |
| US9579026B2 (en) | 2008-10-02 | 2017-02-28 | Vascular Imaging Corporation | Optical ultrasound receiver |
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