JPS60111644A - Ultrasonic probe - Google Patents
Ultrasonic probeInfo
- Publication number
- JPS60111644A JPS60111644A JP21890883A JP21890883A JPS60111644A JP S60111644 A JPS60111644 A JP S60111644A JP 21890883 A JP21890883 A JP 21890883A JP 21890883 A JP21890883 A JP 21890883A JP S60111644 A JPS60111644 A JP S60111644A
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic
- container
- window
- support
- probe
- 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.)
- Granted
Links
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
- G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
-
- 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
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/35—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams
- G10K11/352—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams by moving the transducer
- G10K11/355—Arcuate movement
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は１．ｉ３３．械的に超音波ビームを走査し、超
音波断層像を１）ることかできる機械式走査型の超音波
探触子に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is characterized by 1. i33. This invention relates to a mechanical scanning type ultrasound probe that can mechanically scan an ultrasound beam and produce ultrasound tomographic images.
従来例の構成とその問題点
超音波パルスビームを生体に向けて放射し、生体内の音
響インピーダンスの差違によって生じる反射波を受信し
、所望の生体断層像を表示する超音波診断装置が公知で
ある。その中で超音波ビームを機械的に、扇形状あるい
は直線状に走査し、扇形状あるいは矩形状の超音波断層
像が得られる装置がある。Conventional configuration and problems There are known ultrasonic diagnostic devices that emit an ultrasonic pulse beam toward a living body, receive reflected waves caused by differences in acoustic impedance within the living body, and display a desired tomographic image of the living body. be. Among these devices, there is a device that mechanically scans an ultrasound beam in a fan shape or a straight line to obtain a fan-shaped or rectangular ultrasound tomographic image.
超音波ビームを機械的に走査する方式には、超音波振動
子を超音波伝搬媒体液を充した容器の中で、回転、ある
いは任意の点を中心に、往復反転動させることによって
超音波ビームを機械的に扇形走査する方式、あるいは直
線往復運動させることによって直線走査する方式などが
ある。The method of mechanically scanning an ultrasonic beam involves rotating an ultrasonic transducer in a container filled with an ultrasonic propagation medium liquid, or rotating it back and forth around an arbitrary point to scan the ultrasonic beam. There are two methods: mechanically scanning in a fan-shape, and linearly scanning by reciprocating in a straight line.
前者の超音波振動子を回転することによって、超音波ビ
ームを扇形走査する方式の機械式扇形走査型超音波探触
子としては、第１図（Ａ）に示したものが知られている
。ここで第１図ＦＡ）は従来の機械式扇形走査型超音波
探触子の概観図、第１図（Ｂ）に１回転支持体部分の概
略側面図をそれぞれ示す。第１図（Ａ） 、 （Ｂ）に
おいて、１は超音波伝搬媒質を介した容器、２は回転支
持体、３２Ｌ 、 ３ｂ 、 ３ｃ＆：Ｊ、超音波振動
子、４ａ、４ｂ、４ｃはリードスイッチ、５は固定永久
磁石、６は同軸型のロータリートランス、Ｔ及び１３は
プーリ、８は回転軸、９は１７（ｊ触子ケース、１０は
モータ、１１は回転位１ｉｒｉ制御検出器、１２は接続
ケーブル、１４はベルト、１５は液体注入口をそれぞれ
示す。第１図（Ａｌ 、 （Ｂ）に示す従来の機械式扇
形走査型超音波探触子において、回転支持体２は、その
外周面に３個の超音波振動子３ａ、３ｂ、３Ｃと、この
３個の超音波振動子３ａ、３ｂ、３ｃを切換え選択する
り一ドスイソチ４ａ 、 ４ｂ 、４Ｃ１及び回転支持
体２の回転軸８に設けた同軸型のロータリートランス６
から概略構成されている。回転支持体２は、超音波放射
窓（第１図（Ａｌの矢印で示した部分）を有し、超音波
伝搬媒質を充した容器１の中で、モーターＩＱ。As a mechanical fan-scanning ultrasonic probe of the former type, which scans an ultrasonic beam in a fan-shape by rotating an ultrasonic transducer, the one shown in FIG. 1(A) is known. Here, FIG. 1 (FA) is a general view of a conventional mechanical fan-shaped scanning ultrasonic probe, and FIG. 1 (B) is a schematic side view of the one-rotation support portion. In FIGS. 1(A) and (B), 1 is a container via an ultrasonic propagation medium, 2 is a rotating support, 32L, 3b, 3c&:J is an ultrasonic vibrator, and 4a, 4b, 4c are reed switches. , 5 is a fixed permanent magnet, 6 is a coaxial rotary transformer, T and 13 are pulleys, 8 is a rotating shaft, 9 is 17 (j contact case, 10 is a motor, 11 is a rotational position 1iri control detector, 12 is a 14 is a belt, and 15 is a liquid inlet. In the conventional mechanical fan-shaped scanning ultrasonic probe shown in FIG. The three ultrasonic transducers 3a, 3b, 3C are switched and selected, and the three ultrasonic transducers 3a, 3b, 3c are connected to the rotating shaft 8 of the rotary support 2. Coaxial type rotary transformer 6
It is roughly composed of: The rotary support 2 has an ultrasonic emission window (FIG. 1 (portion indicated by an arrow of Al)) and is mounted on a motor IQ in a container 1 filled with an ultrasonic propagation medium.
プーリ７及び１３、ベルＩ・１４によって回転される。It is rotated by pulleys 7 and 13 and bell I.14.
一方モーター１０の回転は、回転位置制御検出器１１に
もとつめて一定の回転数に保持する様にｆｌｉｔ）御さ
れる。尚、同軸型のロータリートランス６は、回転して
いる超音波振動子３ａ、ｓｂ、ｓｃどの電気信号の結合
を非接触に行う為のものである。On the other hand, the rotation of the motor 10 is controlled by a rotation position control detector 11 so as to maintain it at a constant rotation speed. The coaxial rotary transformer 6 is used to connect electric signals from the rotating ultrasonic transducers 3a, sb, sc, etc. in a non-contact manner.
この従来の機１成式扇形走査型超音波探触子の動作は、
例えば回転支持体２００回転つれて、リードスイッチ４
１Ｌは固定永久磁石５との相対位置により閉じられる。The operation of this conventional single-component fan-shaped scanning ultrasonic probe is as follows:
For example, as the rotary support rotates 200 times, the reed switch 4
1L is closed due to its relative position with the fixed permanent magnet 5.
当、然この時、超音波振動子３２Ｌは、生体と所望の１
ケ置に対している必要があることは言うまでもない。次
に本体装置との接続ケーブル１２及び同軸型ロータリー
トランス６を通じて電気信号を印加し、超音波振動子３
ａを付勢する。Of course, at this time, the ultrasonic transducer 32L is connected to the living body and the desired one.
Needless to say, you need to be careful about the location. Next, an electric signal is applied through the connection cable 12 with the main unit and the coaxial rotary transformer 6, and the ultrasonic transducer 3
energize a.
超音波振動子３ａから発生した超音波ビームに１、超音
波伝搬媒質及び容器１の超音波放射窓（第１図（Ａ）の
矢印）を通して、生体に向けて放湯］される。The ultrasonic beam generated from the ultrasonic transducer 3a passes through the ultrasonic propagation medium and the ultrasonic emission window (arrow in FIG. 1(A)) of the container 1, and is ejected toward the living body.
一方、生体からの音響インピーダンスの差、１１１“と
による反射波は、逆の経路を経て超音波振動子３ａで受
波される。その受波信号は、同軸型ロータリートランス
６及び接続ケーブル１２を介して、本体装置に送られ、
適当な信号処理を経て一走査線分として、その強弱をブ
ラウン管上に表示する。On the other hand, the reflected wave due to the acoustic impedance difference 111'' from the living body is received by the ultrasonic transducer 3a via the opposite path. is sent to the main unit via
After appropriate signal processing, the intensity is displayed on a cathode ray tube as one scanning line segment.
以上のごとく回転支持体２と共に超）−？波振動子３ａ
を連続的に回転ぜしめて、次々と超ｉｊ丁波ビームを扇
形走査し、扇形状の生体の超音波断層像が得られる。こ
こで、す〜ドスイノチ４ａば、超音波振動子３ａによる
所定の角度の扇形走査が完了するまで閉じておく必要が
ある。それ←１：、固定永久磁石５により行われる。以
下同様の原理にもとづいて、超音波振動子３ａ、ｓｂ、
３ｃを順番に、リードスイッチ４ａ、４ｂ、４ｃを開閉
することによって、切換え選択使用し、ハ［望の扇形走
査が行わ九、扇形状の超音波断層像が’ｔ！ＪＩ：）Ｉ
Ｌる。As described above, together with the rotating support 2, the super)-? Wave oscillator 3a
is rotated continuously, and the ultrasonic wave beams are scanned one after another in a fan shape, thereby obtaining a fan-shaped ultrasonic tomographic image of the living body. Here, the opening 4a needs to be closed until the ultrasonic transducer 3a completes the fan-shaped scanning at a predetermined angle. It←1: is carried out by the fixed permanent magnet 5. Based on the same principle, ultrasonic transducers 3a, sb,
3c, by sequentially opening and closing reed switches 4a, 4b, and 4c, the desired fan-shaped scan is performed and the fan-shaped ultrasonic tomographic image is not obtained! JI:)I
L.
ところで、前述のごとき従来の機械式走査型超音波探触
子において、容器１は、音響的特性、電気的特性１機械
的特性、熱的特性、及び化学的特性などを充分配慮する
必要がある。すなわち音響インピーダンスは、可能な限
り生体と等しいことが望ましい。もしも生体との差違が
あれば、容器１と超音波振動子３ａ 、３ｂ 、３Ｃの
表面とにおいて超音波の多】１１反射を生じて、その信
号は超音波断層像に重畳する。それ故、超音波断層像の
品位の著しい劣化を来たし、誤診を招くものである。By the way, in the conventional mechanical scanning ultrasonic probe as described above, the container 1 needs to have sufficient consideration of acoustic properties, electrical properties, mechanical properties, thermal properties, chemical properties, etc. . That is, it is desirable that the acoustic impedance is as similar as possible to that of a living body. If there is a difference from the living body, multiple reflections of ultrasonic waves will occur between the container 1 and the surfaces of the ultrasonic transducers 3a, 3b, and 3C, and the signals will be superimposed on the ultrasonic tomographic image. Therefore, the quality of the ultrasonic tomographic image deteriorates significantly, leading to misdiagnosis.
一方、音響伝搬損失は超音波探触子の感度を著しく左右
し、可能な限り少ないことが望ましい。又、容器１は、
感電防止の為、電気絶縁物であること、更に１ｌｉｌ
＜て小形で破損しにくいものにする為、機械的に強い材
料であることが望ましい。それから探触子の耐熱＋２Ｌ
を良くする為に、熱安定性が良いことが必要である。そ
して容器１は、超音波伝搬媒体液や、生体、及び消毒薬
や化学薬品に対して、不活性でなければ斤らない。しか
も低価格で、容易に入手できることなど、容器１には多
様々口料条件が必要である。にもかかわらず従来でｒ↓
こＪしらの点の配慮があまりなされていないのが現状で
ある。On the other hand, acoustic propagation loss significantly affects the sensitivity of an ultrasound probe, and it is desirable to reduce it as much as possible. Moreover, the container 1 is
To prevent electric shock, it must be an electrical insulator, and 1 lil
In order to make it small and hard to break, it is desirable to use a mechanically strong material. Then the heat resistance of the probe +2L
In order to improve the thermal stability, it is necessary to have good thermal stability. The container 1 must be inert to the ultrasonic propagation medium, living organisms, disinfectants, and chemicals. Moreover, the container 1 requires a wide variety of opening conditions, such as low cost and easy availability. Nevertheless, conventionally r↓
At present, not much consideration is given to these points.
発明の目的
本発明は、以上の様な事情に鑑みてなさ、ｌＬｋもので
あって、多垂反射が少なく音響伝搬損失の少ない超音波
探触子を提供することを目的とするものである。OBJECTS OF THE INVENTION The present invention was made in view of the above circumstances, and it is an object of the present invention to provide an ultrasonic probe with fewer multiple reflections and less acoustic propagation loss.
発明の１７１成
本発明は上記目的を達成するもので、少なくとも１個の
超音波振動子が設けられた支持体と、前記支持体を内包
し、超音波伝搬媒質が充填された容器と、前記支持体を
駆動する駆動手段とを備え、前記容器の一部に超音波放
射窓が設けられておシ、少なくとも前記超音波放射窓は
ポリメチルペンテン樹脂で形成されていることを特徴と
する超音波探触子を提供するものである。171 Aspects of the Invention The present invention achieves the above object, and comprises a support provided with at least one ultrasonic transducer, a container containing the support and filled with an ultrasonic propagation medium, and the support. and a driving means for driving the body, an ultrasonic wave emitting window is provided in a part of the container, and at least the ultrasonic wave emitting window is formed of polymethylpentene resin. It provides a probe.
実施例の説明 以下に本発明の実施例を図面により説明する。Description of examples Embodiments of the present invention will be described below with reference to the drawings.
第２図は、本発明の一芙柿例における機械式１４，１形
走査型超音波探触子の容器部分の概観図である。FIG. 2 is a general view of a container portion of a mechanical 14.1 type scanning ultrasonic probe in one embodiment of the present invention.
図において２０は超音波振動子３Ｑ２Ｌの支持体、３０
＆は超音波振動子、４０ａはリードスイッチ、６ｏは固
定永久磁石、６Ｑはロータリートランス、７０はプーリ
、８ｏは回転軸、９ｏは探触子ケーク、１００は超音波
伝搬媒質を充した容器、１０１は容器１００に設けられ
た肉厚の薄い覗き窓、１４０はベルト、１５０は超音波
伝搬媒質注入口であシ、本実施例では図中矢印で示す超
音波放射窓を含む容器１００全体が着色されたポリメチ
ルペンテン樹脂でつくられている。In the figure, 20 is a support for the ultrasonic transducer 3Q2L, and 30
& is an ultrasonic transducer, 40a is a reed switch, 6o is a fixed permanent magnet, 6Q is a rotary transformer, 70 is a pulley, 8o is a rotating shaft, 9o is a probe cake, 100 is a container filled with an ultrasonic propagation medium, 101 is a thin viewing window provided in the container 100, 140 is a belt, and 150 is an ultrasonic propagation medium inlet.In this embodiment, the entire container 100 including the ultrasonic emission window indicated by the arrow in the figure Made from colored polymethylpentene resin.
本実施例の超音波探触子の動作原理は、第１図に示した
従来の機械式扇形走査型超音波探触子と同じである〃・
ら説明を省略する。The operating principle of the ultrasonic probe of this embodiment is the same as that of the conventional mechanical fan-shaped scanning ultrasonic probe shown in Fig. 1.
The explanation will be omitted.
ポリメチルペンテン樹脂は本来無色透明であるが回転支
持体２０や回転軸８０あるいは超音波振動子３０ａなど
の機構部分を容器１００の外部より肉眼で見えない様に
本実施例では着色して使用している。しかしその場合、
超音波伝搬媒質に混入する気泡の観察が回頭Ｃになる。Polymethylpentene resin is originally colorless and transparent, but in this example, it is colored so that mechanical parts such as the rotating support 20, rotating shaft 80, or ultrasonic vibrator 30a are not visible to the naked eye from outside the container 100. ing. But in that case,
Turning C is the observation of air bubbles mixed into the ultrasonic propagation medium.
そこで本実施例では気−泡の観察のだめに、容器１００
の一部に肉厚の薄い覗き窓１０１を設け、覗き窓１０１
よシ気泡の混入を観察できるようにしている。なお、覗
き窓１０１としては透明な窓であっても良いことはもち
ろんである。Therefore, in this embodiment, the container 100 was used for observation of air bubbles.
A thin viewing window 101 is provided in a part of the viewing window 101.
This makes it possible to observe the inclusion of air bubbles. Note that, of course, the viewing window 101 may be a transparent window.
ここで使用されるポリメチルペンテン椿１脂〔（−ＯＨ
−ＯＨ２−）−〕の特性の一部を表に示す。Polymethylpentene camellia 1 fat used here [(-OH
-OH2-)-] are shown in the table.
ＬＣＨ２−ＣＨ（Ｃ）１３）２
表
表より明らかなようにポリメチルペンテン樹脂の音響イ
ンピーダンスは約１．６６Ｘ１０５ｆ／ｃ助、５（５）
であり、生体の音響インピーダンス約１．６４Ｘ１０５
９／ｃＩｊ −Ｓｅｃ と極めて近いため、超音波振動
子３０ａと容器１００とにおいて生じる超音波の多重反
射を無くすることができ、本実施例で得られた超音波断
層像上には多重反射による像はほとんど観察されず、極
めて１（姑ＩＩ′１位の超音波断層像が得られた。LCH2-CH(C)13)2 As is clear from the table, the acoustic impedance of polymethylpentene resin is approximately 1.66X105f/c, 5(5)
The acoustic impedance of the living body is approximately 1.64×105
9/cIj -Sec, it is possible to eliminate multiple reflections of ultrasound waves that occur between the ultrasound transducer 30a and the container 100, and the ultrasound tomographic image obtained in this example does not show any traces due to multiple reflections. Almost no image was observed, and an ultrasonic tomographic image of 1 (mother-in-law II') was obtained.
またポリメチルペンテン樹脂の３．５ ＭＨｚにおける
超音波の減衰は約０．４ ｄＢ／πｍと極めて少なく、
探触子の感度の低下はほとんどみられない。Furthermore, the attenuation of ultrasonic waves at 3.5 MHz of polymethylpentene resin is extremely small at approximately 0.4 dB/πm.
There is almost no decrease in the sensitivity of the probe.
更に本実施例は容器１００をポリメチルペンテン樹脂で
成形しているため、機械的及び熱的特性は実用上充分な
強度を有しておシ、軽くて小形で破損しにくい。一方体
積固有抵抗は１０１６〈Ｏｈｍ−αであり電気絶縁物で
あるので感電防止に役立つ。Further, in this embodiment, since the container 100 is molded from polymethylpentene resin, it has sufficient mechanical and thermal properties for practical use, and is light, small, and difficult to break. On the other hand, the volume resistivity is 1016〈Ohm-α, and since it is an electrical insulator, it is useful for preventing electric shock.
そして化学的に不活発であるので、容器１００が薬品に
侵されることもない。その上ポリメチルペンテン樹脂は
熱ｕｆｆｌＪ性樹脂であり、通常の射出成形によシ容易
に容器１００の製造ができる。Since it is chemically inert, the container 100 will not be attacked by chemicals. Furthermore, polymethylpentene resin is a heat-resistant resin, and the container 100 can be easily manufactured by ordinary injection molding.
このように本構成の超音波探触子では、多重反射が極め
て少なく、超音波振動子の感度損失を少なくできる。In this manner, the ultrasonic probe with this configuration has extremely few multiple reflections, and can reduce sensitivity loss of the ultrasonic transducer.
第３図に本発明の超音波探触子の容器部分の他の実施例
を示す。（Ａ）は側断面図、（Ｂ）は（Ａ）のＡ−Ａ’
における断面図である。FIG. 3 shows another embodiment of the container portion of the ultrasonic probe of the present invention. (A) is a side sectional view, (B) is AA' of (A)
FIG.
本実施例は容器１０３の一部に設けられた超音波放射窓
１０２の部分を少なくともポリメチルペンテン樹脂でつ
くり、容器１０３の他の部分は透明物質で形成されてい
る。この場合容器１０３の他の部分は着色しないポリメ
チルペンテン（も１脂であっても他の透明なイ１料であ
っても良い。In this embodiment, at least the ultrasonic emission window 102 provided in a part of the container 103 is made of polymethylpentene resin, and the other parts of the container 103 are made of a transparent material. In this case, the other parts of the container 103 may be made of uncolored polymethylpentene or other transparent material.
第４図に本発明の他の実施例である機械式直線走査型の
超音波探触子の概観図を示す。FIG. 4 shows an overview of a mechanical linear scanning type ultrasound probe according to another embodiment of the present invention.
図において＊−ｏｏＶｉ超音波振動子３０の支長体、３
０は超音波振動子、Ｔｏ及び１３０はプーリ、８Ｑは回
転軸、９０け探触子ケース、１ｏｏｉ１：超音波伝搬媒
体液を充した容器、１０１は容８：÷の肉厚の薄い覗き
窓、１１０は支持体２００の位置検出器、１２０は本体
装置との接続ケーブル、１４０はベルト、１５０は超音
波伝搬媒質注入１］、１６０はモータであり、本実施例
も矢印で示す超音波放射窓を含む容器１００がポリメチ
ルペンテン樹脂ｉ脂で形成されておシ、容器１００の超
音波放射窓を除く他の部分は少なくとも着色されたポリ
メチルペンテン樹脂を使用している。In the figure, the support body of the *-ooVi ultrasonic transducer 30, 3
0 is an ultrasonic transducer, To and 130 are pulleys, 8Q is a rotating shaft, 90 probe case, 1ooi1: a container filled with ultrasonic propagation medium liquid, 101 is a thin observation window with a volume of 8:÷ , 110 is a position detector for the support 200, 120 is a connection cable with the main unit, 140 is a belt, 150 is an ultrasonic propagation medium injection 1], 160 is a motor, and in this embodiment, the ultrasonic radiation is also indicated by an arrow. The container 100 including the window is made of polymethylpentene resin, and the other parts of the container 100 except for the ultrasonic emission window are made of at least colored polymethylpentene resin.
この場合超音波放射窓を形成するポリメチルペンテン樹
脂も着色されていても良い。また容器１００は着色され
ない透明なポリメチルペンテン樹脂であっても良く、こ
の場合は肉厚の薄い覗き窓１０１は必要ない。さらに第
４図の場合肉厚の薄い覗き窓１０１のかわりに透明窓を
設けても良い。これら覗き窓は組立時に容器内に注入さ
れた超音波伝搬媒質内に混入気泡があるのか否かを検査
するのに使用される。In this case, the polymethylpentene resin forming the ultrasonic emission window may also be colored. Further, the container 100 may be made of uncolored transparent polymethylpentene resin, and in this case, the thin viewing window 101 is not necessary. Furthermore, in the case of FIG. 4, a transparent window may be provided instead of the thin viewing window 101. These viewing windows are used to inspect the presence of entrained air bubbles in the ultrasound propagation medium injected into the container during assembly.
第４図に示し／こ本実施例による機械式直線走査型超音
波探触子の動作は、まずモータ１０５．プーリ１３０と
７０．ベルト１４０を介して回転軸８０を回転せしめて
支持体２００を左右に直線往復動させる。支持体２００
の位置は、位置検出器１１０によって検出する。一方支
持体２００の所望の位置に応じて、超音波振動子３０を
付勢し、そして超音波ビームＣＪ１、容器１００の超音
波放射窓（第４図矢印）を通じて、生体に向けて放射さ
れる。The operation of the mechanical linear scanning ultrasonic probe according to this embodiment shown in FIG. 4 begins with the motor 105. Pulleys 130 and 70. The rotating shaft 80 is rotated via the belt 140 to linearly reciprocate the support body 200 from side to side. Support body 200
The position of is detected by the position detector 110. On the other hand, the ultrasonic transducer 30 is energized according to the desired position of the support 200, and the ultrasonic beam CJ1 is emitted toward the living body through the ultrasonic emission window (arrow in FIG. 4) of the container 100. .
生体の音響インピーダンスの差違に」：り牛しる反射波
は、逆の経路を経て、超音波振動子３０で受イ１）され
、受信信号は、ケーブル１２０をｉｊｌじて本体装置１
′釘に送られ、適当な１１τ号処理を経て、−走査線分
として、その強弱をブラウン管上に表示する。Due to the difference in the acoustic impedance of the living body, the reflected waves are received by the ultrasonic transducer 30 via the opposite path, and the received signal is transmitted to the main unit 1 through the cable 120.
' The signal is sent to the nail, undergoes appropriate 11τ processing, and its strength is displayed on a cathode ray tube as a -scanning line segment.
以下同様の原Ｊ！ｌ！にもとづいて、モータ１Ｑ５を回
転し、支持体２００を左右に直線往復動せしめて、矩形
の超音波断層像を得るものである。本構成においても第
２図に示した実施例と同様の効果が１１）られだ。Below is the same Hara J! l! Based on this, the motor 1Q5 is rotated to linearly reciprocate the support body 200 from side to side to obtain a rectangular ultrasonic tomographic image. This configuration also has the same effect as the embodiment shown in FIG. 2 (11).
な訃本発明の超音波探触子においては、回転支持体に取
り伺けられる超音波振動子は少なくとも１個設けられれ
ば良く、首だ回転支持体の駆動は回転、往復反転動、直
接往復動Ｍの単独もしくはそれらの組合わせのいずれで
あってもｊ（い。In the ultrasonic probe of the present invention, it is sufficient that at least one ultrasonic transducer that can be penetrated by the rotating support is provided, and the rotating support can be driven by rotation, reciprocating motion, or direct reciprocating motion. Whether the dynamic M is used alone or in combination, j(i.
発明の効果
以上要するに本発明は少なくとも１個の超音波振動子が
設けら九だ支持体と、前記支Ｊ、１一体を内包し、超音
波伝搬媒質が充填された容器と、前記支持体を、駆動す
る駆動手段とを備え、前記容器の一部に超音波放射窓が
設けられており、少なくとも前記超音波放射窓はポリメ
チルペンテン樹脂で形成されていることを肋徴とする超
音波探触子を提供するもので、多重反射が極めて少なく
、超音波振動子の感度をｊ員うことなく機械式走査型の
超音波探触子を容易に実現することができる利点を有す
る。Effects of the Invention In short, the present invention comprises a support body provided with at least one ultrasonic transducer, a container integrally containing the support J, 1 and filled with an ultrasonic propagation medium, and the support body. , a driving means for driving, an ultrasonic emission window is provided in a part of the container, and at least the ultrasonic emission window is formed of polymethylpentene resin. The present invention has the advantage that multiple reflections are extremely low, and a mechanical scanning type ultrasonic probe can be easily realized without increasing the sensitivity of the ultrasonic transducer.
第１図ｔＡ）は従来の機械式扇形走査型超音波探触子の
概観図、同図（Ｂ）は同探触子の回転支持体の側面図、
第２図Ｃ」二本発明の一実施例である機械式扇形走査型
超音波探触子の容器部分の概観図、第３図（Ａｌは本発
明の超音波探触子の容器部分の他の実施例の縦断ｉｉ’
ｉｉ図、同図（Ｂ）は（Ａ）のＡ−Ａ’における断面図
、第・［図ｔ；１、本発明の他の実施例である機株式直
線走査型超ｊ′１波探触子の概観図である。
２０．２００・・・・支持体、３０，３０ａ・・・・超
音波振動子、４０ａ・・・・・リードスイッチ、５０・
・・・・・固定永久磁石、６ｏ・・・・・・ロータリー
トランス、７０．１３０・・・・・・プーリ、８ｏ・・
・・・・回転軸、９０・・・・・探触子ケース、１００
、１０３・・・・容２：軟１０１・・・覗き窓、１０
２・・・・・・超７；？波放躬窓、１１０ ・・・位置
検出器、１２０・・・・接続ケーブル、１４０・・・ベ
ルｌ・、１５０・・・・・乙１：、人［二ｌ、’＋０５
・・モータ。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第２
図
図
（ハ） （Ｂ）
−図
ｆθ、５Figure 1 (tA) is an overview of a conventional mechanical fan-shaped scanning ultrasonic probe, and Figure 1 (B) is a side view of the rotary support of the probe.
Figure 2 C''2 An overview of the container portion of the mechanical fan-shaped scanning ultrasound probe which is an embodiment of the present invention, and Figure 3 (Al is the container portion of the ultrasound probe of the present invention). Longitudinal section ii' of the example of
Figure ii, Figure (B) is a cross-sectional view taken along line A-A' in Figure (A); FIG. 20.200... Support body, 30, 30a... Ultrasonic vibrator, 40a... Reed switch, 50.
...Fixed permanent magnet, 6o...Rotary transformer, 70.130...Pulley, 8o...
... Rotation axis, 90 ... Probe case, 100
, 103...Yong 2: Soft 101...Peep window, 10
2...Super 7;? Wave radiation window, 110...Position detector, 120...Connection cable, 140...Bell l, 150...Otsu 1:, Person [2l,'+05
··motor. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Diagram (c) (B) - diagram fθ, 5
Claims (4)
持体と、前記支持体を内包し、超音波伝搬媒質が充填さ
れた容器と、前記支持体を、駆動する駆動手段とを備え
、前記各２にの一部に超音波放射窓が設けられており、
少なくとも前記超音波放射窓はポリメチルペンテン樹脂
で形成されていることを特徴とする一超音波探触子。(1) A saw support provided with at least one ultrasonic vibrator, a container enclosing the support and filled with an ultrasonic propagation medium, and a driving means for driving the support. , an ultrasonic emission window is provided in a part of each of the two,
An ultrasonic probe characterized in that at least the ultrasonic emission window is formed of polymethylpentene resin.
いることを特徴とする特許請求の範囲第１項記載の超音
波探触子。(2) The ultrasonic probe according to claim 1, wherein the entire container is made of polymethylpentene resin.
、前記容器の超音波放射窓以外の７５１分に覗き窓を設
けたことを特徴とする特許請求の範囲第１項記載の超音
波探触子。(3) The ultrasonic detector according to claim 1, characterized in that at least the container other than the ultrasonic emission window is opaque, and a viewing window is provided at 751 minutes of the container other than the ultrasonic emission window. Tentacles.
特許訪３くの範］、Ｊ１第３項記載の超音波探触子。 （句 覗き窓が透り」窓からなることを特徴とする特許
請求の範囲第３項記載の超音波探触子。(4) The ultrasonic probe described in Paragraph 3 of J1, Patent Publication No. 3, characterized in that the viewing window is made of a thin-walled window. The ultrasonic probe according to claim 3, characterized in that it consists of a transparent window.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21890883A JPS60111644A (en) | 1983-11-21 | 1983-11-21 | Ultrasonic probe |
| EP84114041A EP0142862A3 (en) | 1983-11-21 | 1984-11-20 | Ultrasonic probe having a liquid-containing housing formed of polymethylpentene resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21890883A JPS60111644A (en) | 1983-11-21 | 1983-11-21 | Ultrasonic probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60111644A true JPS60111644A (en) | 1985-06-18 |
| JPH0529459B2 JPH0529459B2 (en) | 1993-04-30 |
Family
ID=16727195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21890883A Granted JPS60111644A (en) | 1983-11-21 | 1983-11-21 | Ultrasonic probe |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0142862A3 (en) |
| JP (1) | JPS60111644A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6290610U (en) * | 1985-11-29 | 1987-06-10 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4780862A (en) * | 1986-11-17 | 1988-10-25 | Shell Oil Company | Borehole televiewer |
| EP0355175A1 (en) * | 1988-08-17 | 1990-02-28 | Siemens Aktiengesellschaft | Apparatus for the contactless disintegration of concrements in the body of a living being |
| US6773678B2 (en) | 2000-03-20 | 2004-08-10 | Endress + Hauser Conducta Gesellschaft Fur Mess Und Regeltechnik Mbh + Co. | Mounting system and retractable sensor holder for analytical sensors |
| US8137279B2 (en) | 2001-10-16 | 2012-03-20 | Envisioneering, Llc | Scanning probe |
| US6709397B2 (en) * | 2001-10-16 | 2004-03-23 | Envisioneering, L.L.C. | Scanning probe |
| US9044216B2 (en) | 2010-07-12 | 2015-06-02 | Best Medical International, Inc. | Biopsy needle assembly |
| US8758256B2 (en) | 2010-07-12 | 2014-06-24 | Best Medical International, Inc. | Apparatus for brachytherapy that uses a scanning probe for treatment of malignant tissue |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59108605U (en) * | 1983-01-10 | 1984-07-21 | 株式会社日立メデイコ | Ultrasonic tomography device probe |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3968459A (en) * | 1975-01-29 | 1976-07-06 | Sperry Rand Corporation | Ultrasonic driver transducer |
| DE2539961A1 (en) * | 1975-09-02 | 1977-10-06 | Friedman | Germination prevention and seed killing - by specified ultrasonic excitation of cavitation in water space |
| US4149419A (en) * | 1977-11-25 | 1979-04-17 | Smith Kline Instruments, Inc. | Ultrasonic transducer probe |
| CA1153097A (en) * | 1978-03-03 | 1983-08-30 | Jack Jellins | Rotating ultrasonic scanner |
| US4387720A (en) * | 1980-12-29 | 1983-06-14 | Hewlett-Packard Company | Transducer acoustic lens |
| US4398425A (en) * | 1981-08-03 | 1983-08-16 | Dymax Corporation | Ultrasonic scanning transducer |
| JPS59225044A (en) * | 1983-06-07 | 1984-12-18 | 松下電器産業株式会社 | Ultrasonic transducer |
-
1983
- 1983-11-21 JP JP21890883A patent/JPS60111644A/en active Granted
-
1984
- 1984-11-20 EP EP84114041A patent/EP0142862A3/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59108605U (en) * | 1983-01-10 | 1984-07-21 | 株式会社日立メデイコ | Ultrasonic tomography device probe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6290610U (en) * | 1985-11-29 | 1987-06-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0142862A2 (en) | 1985-05-29 |
| JPH0529459B2 (en) | 1993-04-30 |
| EP0142862A3 (en) | 1986-04-30 |
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