JPS6381263A - Ultrasonic probe - Google Patents
Ultrasonic probeInfo
- Publication number
- JPS6381263A JPS6381263A JP22477086A JP22477086A JPS6381263A JP S6381263 A JPS6381263 A JP S6381263A JP 22477086 A JP22477086 A JP 22477086A JP 22477086 A JP22477086 A JP 22477086A JP S6381263 A JPS6381263 A JP S6381263A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- gnd
- vibrator
- lead wire
- divided
- 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 description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 8
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 15
- 238000010586 diagram Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
(産業上の利用分計)
本発明は物体の映潅あるいは人体の診断に使用される超
音波探触子に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application) The present invention relates to an ultrasonic probe used for imaging objects or diagnosing the human body.
(従来の技術)
[if−液深触子を使用して物体を映鐵したり1人体の
診断をする場合には分解能の高い像が安水される。そこ
で従来はプレイ振動子と音響レンズを組合わせて超音彼
ビームを絞る様にしていた。この場合プレイ振動子の配
列方向については、電子的に収束点を変化させることに
より極めて広い範囲においてビームを収束させることが
可能であるが、音響レンズ方向については物理的に焦点
が固定なため焦点近傍においてのみビームが収束され焦
点から遠ざかるにしたがいビーム幅は広くなり、対象物
が焦点から離れたrfL瞠にある場合は十分に収束され
たビームを形成することが困難であった。(Prior Art) [If - When using a liquid probe to image an object or diagnose a single human body, a high-resolution image is obtained. Therefore, in the past, a play oscillator and an acoustic lens were combined to narrow down the ultrasonic beam. In this case, it is possible to converge the beam in an extremely wide range by electronically changing the convergence point in the arrangement direction of the play oscillators, but in the acoustic lens direction, the focus is physically fixed, so the focus The beam is converged only in the vicinity, and the beam width becomes wider as it moves away from the focus, making it difficult to form a sufficiently focused beam when the object is in the rfL hole away from the focus.
これを改善するため複数の環状超音波探触子を同心円状
に配置し、この各振動子に所定の遅延時間を与えること
により、アレイ振動子の配列方向およびレンズ方向の2
次元的に収束した超Wr波ビームを得る方法が考案され
ている。To improve this, multiple annular ultrasonic probes are arranged concentrically and a predetermined delay time is given to each transducer.
A method of obtaining a dimensionally focused ultra-Wr wave beam has been devised.
この環状超音波探触子としては従来第5図に示す様に円
板振動子1を分極後、パッキング材7側に信号電極2.
マツキング1116側にGND電極3を印刷していた。As shown in FIG. 5, this annular ultrasonic probe conventionally has a disk vibrator 1 which is polarized, and then a signal electrode 2 is attached to the packing material 7 side.
The GND electrode 3 was printed on the mating 1116 side.
詩にGND電極3に関してはベタアースとして共通電極
となる様にしその共通電極の端からリード線4を引き出
していた。ま比信号電極2に関しては円柱状のパッキン
グ材7にす−ド@5が通過可能となる様な穴をあけ、リ
ード線5をパッキング材7から引き出した後分割された
環状圧電振動子1とパッキング材を接着してい友。Specifically, the GND electrode 3 was made to serve as a common electrode as a solid earth, and the lead wire 4 was drawn out from the end of the common electrode. Regarding the ratio signal electrode 2, a hole is made in the cylindrical packing material 7 through which the lead wire 5 can pass, and after the lead wire 5 is pulled out from the packing material 7, the divided annular piezoelectric vibrator 1 and A friend who glued the packing material.
しかし、このような構成の超音波探触子においては、音
響マツチング層6側を共通電極とし、リード14を引き
出し電子回路8側パルサ/レシ一バ部9のGNDと接続
している九め、このリード線部分が、各振動子の共a部
分となり、共・愚インピーダンスによる結合がおこり、
電気的なりロストーク、詩に共通インピーダンスの影響
lこより発生するクロストークを増大させ、それが奮1
、ひいては超音波のBモード潅の画質と劣化させる原因
となってい九〇
(発明が解決しようとする問題点)
このように従来の構成1こおいては、リード線部分がq
!r損動子の共通部分となり、共通インピーダンスによ
る結合がおこり、電気的なりロストークを増加させ1画
質の劣化をもtらしてい友。However, in the ultrasonic probe having such a configuration, the acoustic matching layer 6 side is used as a common electrode, and the ninth lead 14 is pulled out and connected to the GND of the pulser/receiver section 9 on the electronic circuit 8 side. This lead wire part becomes the common a part of each vibrator, and coupling occurs due to common impedance.
Electrical losstalk, the effect of common impedance on the poem increases the crosstalk that occurs, and it
90 (Problem to be Solved by the Invention) As described above, in conventional configuration 1, the lead wire portion is
! This becomes a common part of the loss element, and coupling occurs due to the common impedance, increasing electrical losstalk and deteriorating image quality.
本発明は、この様な事情を考慮してなされtものでその
目的とするところは電気的クロストークを低減し、超音
波のBモードlの画質を向上させることのできる超音波
探触子を提供することを目的とするものであるつ
〔発明の構成〕
(問題点を解決するための手段)
本発明は、両面に分割され九電極を有する環状圧電振動
子の片面にパッキング材を層着し、もう一方の面一こ音
響マツチング層を接着する環状超音波子において、従来
共通電極としていた音響マツチングl1llllのGN
D電極を共通電極とせず各振動子毎にGND電極を設け
、信号電極と共にリード榛を用いて引き出し電子回路側
の各振動子に対応するパルサ/レシーバ部の信号電極お
よびGND電極と接続する様にしtものである。The present invention was made in consideration of these circumstances, and its purpose is to provide an ultrasound probe that can reduce electrical crosstalk and improve the image quality of B-mode ultrasound. [Structure of the Invention] (Means for Solving the Problems) The present invention provides a structure in which a packing material is layered on one side of an annular piezoelectric vibrator that is divided into both sides and has nine electrodes. On the other hand, in the annular ultrasonic element to which the acoustic matching layer is bonded on the same surface, the GN of the acoustic matching l1llll, which has been used as a common electrode, is used.
Instead of using the D electrode as a common electrode, a GND electrode is provided for each vibrator, and a lead wire is used together with the signal electrode to connect it to the signal electrode and GND electrode of the pulser/receiver section corresponding to each vibrator on the extraction electronic circuit side. It's a great thing.
(作用)
かくして1本発明によれば、電気的なり、ロストーク、
特に共通インピーダンスの影響によV発生すルクロスト
ークを低減し、超音波QBモード求の画質を向上させる
ことが可能となる。(Function) Thus, according to the present invention, electrical leakage, losstalk,
In particular, it is possible to reduce the Le crosstalk generated by V due to the influence of the common impedance, and improve the image quality required in the ultrasonic QB mode.
(実施例)
第1図に本発明の実施例を示す。L@2図は、鵠1図の
振動子の横断面図である。1は環状超音波振動子で信号
電極2およびGND電極3を印刷することにより1例え
ば3分割されているものとする。GND電極fこついて
は、従来ベータアースとして共通電極になる様にし共通
電極の端からリード榛を引き出していた。(Example) FIG. 1 shows an example of the present invention. Figure L@2 is a cross-sectional view of the vibrator shown in Figure 1. 1 is an annular ultrasonic transducer which is divided into, for example, three parts by printing a signal electrode 2 and a GND electrode 3. In the past, the GND electrode was used as a common electrode as a beta ground, and a lead wire was pulled out from the end of the common electrode.
本発明においては、従来共通電極としていたGND電極
を分離することにより1例えば3分割の場合は、各振動
子のGND電極から、それぞれリード榛を引き出し、そ
の後、音響マツチング層を層着する。引き出されたGN
D電極側リード線はそれに対応する信号側電極から引き
出されたリード線と共に電子回路側の各振動子に対応す
るパルサ/レシーバ部9の信号線およびGND線と接続
する。各GND電極よりリード榛を引き出す場合、第3
図に示す様に径方向でほぼ同じ立置から引き出しtIi
!合、振動モードが変化して、音場分布ひいては画質に
影響を与える場合がある。これを抑えるため第4図に示
す様に、径方向を3分割し、それぞれの場所からGND
[9に側リードmを引き出す。GND電極側リード線の
引き出し方法としては、嘉1図に示す様に振動子の外側
へ引き出す方法の他に、各振動子およびパッキング材に
GND電極側リード線が通過する様な穴をあけ。In the present invention, in the case of dividing the vibrator into three parts, for example, by separating the GND electrode, which was conventionally used as a common electrode, lead fins are drawn out from the GND electrode of each vibrator, and then an acoustic matching layer is layered. GN pulled out
The D electrode side lead wire, together with the lead wire pulled out from the corresponding signal side electrode, is connected to the signal line and GND line of the pulser/receiver section 9 corresponding to each vibrator on the electronic circuit side. When pulling out the lead wire from each GND electrode, the third
As shown in the figure, it is pulled out from approximately the same vertical position tIi in the radial direction.
! In this case, the vibration mode changes, which may affect the sound field distribution and ultimately the image quality. In order to suppress this, the radial direction is divided into three as shown in Figure 4, and the GND is connected from each location.
[Pull out the side lead m at 9. In addition to pulling out the GND electrode side lead wire to the outside of the vibrator as shown in Figure 1, you can also make a hole in each vibrator and packing material so that the GND electrode side lead wire can pass through.
その穴を通してGND電極側リード榛を引き出すことも
できる。The GND electrode side lead shank can also be pulled out through the hole.
また、電極印刷型振動子のみならず、第6図に示す様憂
こ振動子自体を分割した場合にも適用可能であることは
いうまでもない。It goes without saying that the present invention is applicable not only to the printed electrode type vibrator but also to the case where the cylindrical vibrator itself is divided as shown in FIG.
このように本発明によれば、電気的なりロストーク、特
に共通インピーダンスの影響lこよジ発生するクロスト
ークを低減し、超鋒波のBモード慮の画質を向上させる
ことができる。As described above, according to the present invention, it is possible to reduce electrical losstalk, particularly crosstalk caused by the influence of common impedance, and improve the image quality in consideration of the B mode of the ultraviolet wave.
第1図は、本発明の一実施例を示す図、第2図は、第1
図の振動子(電極印刷型)の横断面図。
第3図は径方向のほぼ同じ立置よジリード榛を引き出し
た図、嬉4図はGNDIllのリード線の引き出し方法
をそれぞれ別の場所から引き出した図、框5図は従来例
を説明した図、第6図は振動子を分割した場合の実施例
を示す図である。
1・・・超音波振動子、2・・・信号電極、3・・・G
ND電極、4・・・GNDltllリードI1.5・・
・信号側リード線、6・・・音響マツチング1.7・・
・パッキング材。
8・・・電子回路部%9・・・バルナ/レシーバ部、I
O・・・遅延回路S。
代理人 弁理士 則 近 憲 歯
間 竹 花 喜久男
第1図 第2図
第3図 第4図
ゝ7
第5図
マリチシクンν
GND電石−
1入1市j
4占号・色おに
バヅ〜ン2湘
第6図FIG. 1 is a diagram showing one embodiment of the present invention, and FIG. 2 is a diagram showing an embodiment of the present invention.
A cross-sectional view of the vibrator (electrode printing type) shown in the figure. Figure 3 is a diagram showing how the lead wires are pulled out in almost the same radial position, Figure 4 is a diagram showing how to pull out the lead wires of the GNDIll from different locations, and Figure 5 is a diagram explaining the conventional example. , FIG. 6 is a diagram showing an embodiment in which the vibrator is divided. 1... Ultrasonic transducer, 2... Signal electrode, 3... G
ND electrode, 4...GNDltll lead I1.5...
・Signal side lead wire, 6...Acoustic matching 1.7...
・Packing material. 8...Electronic circuit part %9... Varna/receiver part, I
O...Delay circuit S. Agent Patent Attorney Nori Chika Ken Kikuo Takehana between teeth Fig. 1 Fig. 2 Fig. 3 Fig. 4 ゝ7 Fig. 5 Maritishikun ν GND electric stone - 1 in 1 city j 4 fortune-telling number/colored oni badge 2sho figure 6
Claims (1)
ッキング材を接着し、もう一方の面に音響マッチング層
を接着してなる超音波探触子において、両面とも分割し
た個々の振動子の電極の端から互いに独立にリード榛を
引き出したことを特徴とする超音波探触子。In an ultrasonic probe consisting of a piezoelectric vibrator having electrodes divided on both sides, a packing material is adhered to one side and an acoustic matching layer is adhered to the other side, the electrodes of the individual vibrators are divided on both sides. An ultrasonic probe characterized in that lead strands are drawn out independently of each other from the ends of the probe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22477086A JPS6381263A (en) | 1986-09-25 | 1986-09-25 | Ultrasonic probe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22477086A JPS6381263A (en) | 1986-09-25 | 1986-09-25 | Ultrasonic probe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6381263A true JPS6381263A (en) | 1988-04-12 |
Family
ID=16818948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22477086A Pending JPS6381263A (en) | 1986-09-25 | 1986-09-25 | Ultrasonic probe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6381263A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015209234A1 (en) * | 2015-05-20 | 2016-11-24 | Robert Bosch Gmbh | Device for emitting and / or receiving acoustic signals |
-
1986
- 1986-09-25 JP JP22477086A patent/JPS6381263A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015209234A1 (en) * | 2015-05-20 | 2016-11-24 | Robert Bosch Gmbh | Device for emitting and / or receiving acoustic signals |
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