JPS60124199A - Ultrasonic probe - Google Patents
Ultrasonic probeInfo
- Publication number
- JPS60124199A JPS60124199A JP58230670A JP23067083A JPS60124199A JP S60124199 A JPS60124199 A JP S60124199A JP 58230670 A JP58230670 A JP 58230670A JP 23067083 A JP23067083 A JP 23067083A JP S60124199 A JPS60124199 A JP S60124199A
- Authority
- JP
- Japan
- Prior art keywords
- backing material
- thin
- vibrator
- curvature
- array
- 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 10
- 239000000463 material Substances 0.000 claims abstract description 66
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 241000257465 Echinoidea Species 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
- B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- 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】
［発明の技術分野］
本発明は超音波診断装置における超音波プローブに関す
る。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an ultrasound probe in an ultrasound diagnostic apparatus.
［発明の技術的前傾とその問題点Ｊ
従来、例えば凸状又は凹状に所定の曲率で湾曲してなる
リニア・プローブは、予め所定の曲率に曲った振動子を
予め同様の曲率で曲げたバッキング材に接着して構成さ
れていた。このように、振動子とバッキング材を予め別
々に同一の曲率で曲げておくのは、バッキング材として
は超音波を吸収してしまうような伝搬減衰が大きいこと
が必要条件とされ、現実にはこの減衰間の充分に大きな
材料が存在していない以上は、所望の減衰間を得るため
にバッキング材を厚くしなければならなく、この厚手の
バッキング材に振動子を接着して一度に曲げることがで
きないからである。[Technical forward tilt of the invention and its problems J Conventionally, a linear probe that is curved at a predetermined curvature in a convex or concave shape, for example, has a transducer that is bent in advance to a predetermined curvature and then bent in advance at the same curvature. It was constructed by adhering to a backing material. In this way, bending the transducer and the backing material separately in advance with the same curvature requires that the backing material has a large propagation attenuation that absorbs ultrasonic waves. If there is no material with a sufficiently large damping gap, the backing material must be made thicker to obtain the desired damping gap, and the vibrator must be glued to this thick backing material and bent at once. This is because it is not possible.
しかしながら、このように振動子とバッキング材を予め
別々に曲げる工程で製造すると、両者の接合面において
加工制約から両者の曲率がうまく合わないことが生じる
ことがあり、これが望みの曲率にならないし、或いは小
さな曲率半径を達成できないという問題点となる。また
、両者の接合がうまくいかない結果、バッキング材とし
て所望の減衰間が得られないということにもなる。However, if the transducer and the backing material are manufactured in a process in which they are bent separately in advance, the curvatures of the two may not match due to processing constraints at the bonding surface of the two, which may result in the curvature not being the desired one. Alternatively, it becomes a problem that a small radius of curvature cannot be achieved. Furthermore, as a result of poor bonding between the two, the desired damping distance cannot be obtained as a backing material.
一方、厚いバッキング材につけてカッティングして曲げ
る場合には、バッキング材と振動子との接合接着面が延
びるため、カッティングギャップが広がり、サイドロー
ブが大幅に増加する不都合があった。On the other hand, when cutting and bending a thick backing material, the bonding surface between the backing material and the vibrator is extended, resulting in a widening of the cutting gap and a significant increase in side lobes.
［発明の目的］
本発明は前記事情に基づいＣなされたもので、所望の曲
率を１ｑることができるど共に、カッティングギャップ
が広がることがなく、然もバッキング材裏面からの超音
波の反０・ｊも防ぐことができる超音波プローブを提供
することを目的とする。[Object of the Invention] The present invention has been made based on the above circumstances, and it is possible to reduce the desired curvature by 1q, prevent the cutting gap from widening, and reduce the ultrasonic wave from the back surface of the backing material to zero. - The purpose is to provide an ultrasonic probe that can also prevent j.
［発明の概要］
上記目的を達成するだめの本発明の概要は、アレイ状の
振動子と薄手のバッキング材を接着して所定の曲率半径
をなでように湾曲し、前記薄手のバッキング材に厚手の
バッキング材を成形固着すると共に、両バッキング材を
同一の音響インピーダンスにしたことを特徴とする
［発明の実施例］
以下、本発明の実施例について図面を参照しながら説明
する。[Summary of the Invention] The outline of the present invention for achieving the above object is to bond an array of vibrators and a thin backing material, curve the transducers with a predetermined radius of curvature, and attach the thin backing material to the thin backing material. [Embodiments of the Invention] A thick backing material is molded and fixed, and both backing materials have the same acoustic impedance [Embodiments of the Invention] Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明に係る超音波プローブの一実施例を示す
断面図である。同図において、１は所定の曲率で湾曲し
てアレイ状をなして配列する振動子であり、この湾曲す
る振動子１の内側には前記と同様の曲率で湾曲づる薄手
のバッキング材２が接着されている。この薄手のバッキ
ング材２の内側には、薄手のバッキング材２と同じ音響
インピーダンスを有する厚手のバッキング材３が固着さ
れている。FIG. 1 is a sectional view showing an embodiment of an ultrasonic probe according to the present invention. In the figure, reference numeral 1 denotes a vibrator that is curved with a predetermined curvature and arranged in an array, and a thin backing material 2 that is curved with the same curvature as above is bonded to the inside of the curved vibrator 1. has been done. A thick backing material 3 having the same acoustic impedance as the thin backing material 2 is fixed to the inside of the thin backing material 2.
次いで、第２図（ａ＞、（ｂ）、（ｃ）を参照しながら
前記実施例の更に詳細な構成の説明と製造工程を説明す
る。Next, with reference to FIGS. 2(a>, (b), and (c)), a more detailed explanation of the structure and manufacturing process of the above embodiment will be explained.
先ず、第２図（ａ）に示すように、振動子１を２〜３Ｉ
ＩＩＩｌｌ程度の薄手のバッキング材２に接着する。First, as shown in FIG. 2(a), the vibrator 1 is
It is adhered to a thin backing material 2 of about IIIll.
この際における薄手のバッキング材２の厚さく２〜３＋
ｎ＋ｎ）は、この後のカッティングによりカッティング
ギャップが広がりすぎない程度を図った適当な値となる
。次に、薄手のバッキング材２に接着された振動子１を
アレイ状にカッティングする。The thickness of the thin backing material 2 at this time is 2 to 3+
n+n) is an appropriate value that ensures that the cutting gap does not become too wide due to subsequent cutting. Next, the vibrator 1 bonded to the thin backing material 2 is cut into an array.
次いで、この振動子１と薄手のバッキング材２を第２図
（ｂ）に示すように、例えば治具（図示せず）に沿わせ
て薄手のバッキング材２が内側に位置するように所定の
曲率半径をなすように一緒に曲げる。その後、内側に位
置して湾曲する薄手のバッキング材２内に当該バッキン
グ（４２と同じ音響インピーダンスを有する注型バラ−
１：ング材を流し込み、第２図（Ｃ）゛に示ずにうに１
１７手のバッキング材３として成形する。このようにし
て、振動子１がアレイ状に切断され、然も同質の音響イ
ンピーダンスを有する薄手のバッキング材２と厚手のバ
ッキング材３が固着されるど共に、所定の曲率で湾曲し
てなる超音波プロー１を製造することができる。Next, as shown in FIG. 2(b), the vibrator 1 and the thin backing material 2 are placed along a jig (not shown) in a predetermined position so that the thin backing material 2 is located on the inside. Bend them together to form a radius of curvature. Thereafter, a cast rose having the same acoustic impedance as the backing (42) is placed inside the curved thin backing material 2.
1: Pour the molding material into the sea urchin 1, not shown in Figure 2 (C).
17 It is molded as a backing material 3. In this way, the vibrator 1 is cut into an array, and the thin backing material 2 and the thick backing material 3, which have the same acoustic impedance, are fixed together. The sonic blower 1 can be manufactured.
尚、上記した製造工程において、ｉｎ型バッキング材を
流し込んで厚手のバッキング材３を成形する代わりに、
予め所定の曲率半径で接着面を仕上げた同一の音響イン
ピーダンスを有する厚手のバッキング材１３を、第３図
に示すように、所定の曲率で曲げた前記の振動子１を接
着した薄手のバッキング材２に、注型バッキング材を用
いて接着してもよい。In addition, in the above manufacturing process, instead of pouring the in-type backing material to form the thick backing material 3,
As shown in FIG. 3, a thick backing material 13 having the same acoustic impedance whose adhesive surface has been finished with a predetermined radius of curvature is used as a thin backing material to which the above-mentioned vibrator 1, which has been bent at a predetermined radius of curvature, is adhered. 2, a cast backing material may be used for adhesion.
以上のように、第１図に示す超音波プローブ、振動子１
と薄手のバッキング材２との接着、カッティング、両者
の所定曲率での湾曲、及び注型バッキング材の流し込み
（又は厚手のバッキング材の接着）等の簡単な工程によ
り容易に所定ノｔｔｔｌをなすように製造でさ、然も薄
手のバッキング材２を活用しているので、カッティング
ギャップが広がらないように作り得る。また、薄手のバ
ッキング材２と厚手のバッキング材３は、注型バッキン
グ材の流し込み（又は注型バッキング材を接着剤としで
用いること）により簡便確実に固着することができ、然
も両バッキング月２と３は同一の音響インピーダンスを
有しているため、伝搬減衰が支障なく行われて超音波を
吸収してしまうので、バッキング材へ放射された超音波
がバッキング材の裏面で反射されて不要な信号として外
部へ出ることがない。As described above, the ultrasonic probe and transducer 1 shown in FIG.
A predetermined knot can be easily formed by simple processes such as adhesion of the backing material 2 and the thin backing material 2, cutting, curving both at a predetermined curvature, and pouring the cast backing material (or adhesion of the thick backing material). However, since it uses a thin backing material 2, it can be manufactured without widening the cutting gap. In addition, the thin backing material 2 and the thick backing material 3 can be simply and securely bonded together by pouring the cast backing material (or by using the cast backing material as an adhesive), and both the backing materials Since 2 and 3 have the same acoustic impedance, propagation attenuation occurs without any problem and the ultrasonic waves are absorbed, so the ultrasonic waves emitted to the backing material are reflected on the back surface of the backing material and are unnecessary. It does not go out as a signal.
［発明の効果］
以上のように本発明によれば、凹状又は凸状のアレイ型
プローブにおける所定の曲率半径をなす湾曲を容易に得
ることができ、アレイ状にカッティングする際にもカッ
ティ３ングギヤツプが広がることがなく、然もバッキン
グ材の裏面からの超音波の反射を防止でき得る超音波ブ
Ｌ１−ブを提供することができる。[Effects of the Invention] As described above, according to the present invention, it is possible to easily obtain a curve with a predetermined radius of curvature in a concave or convex array type probe, and also when cutting in an array shape, the cutting gap can be easily obtained. It is possible to provide an ultrasonic wave L1-b that does not spread and can prevent reflection of ultrasonic waves from the back surface of the backing material.
第１図は本発明の一実施例を示す断面図、第２図（ａ）
、（ｂ）、（Ｃ）及び第３図は本発明に係る超音波プロ
ーブの製造工程を示す説明図である。
１・・・・・・振動子、２・・・・・・薄手のバッキン
グ材、３．１３・・・・・・厚手のバッキング材。Figure 1 is a sectional view showing one embodiment of the present invention, Figure 2 (a)
, (b), (C) and FIG. 3 are explanatory views showing the manufacturing process of the ultrasonic probe according to the present invention. 1... Vibrator, 2... Thin backing material, 3.13... Thick backing material.
Claims (1)
の曲率半径をなすように湾曲し、前記薄手のバッキング
材に厚手のバッキング材を成形固着すると共に、両バッ
キング材を同一の音響インピーダンスにしたことを特徴
とり゛る超音波プローブ。An array of vibrators and a thin backing material are bonded and curved to form a predetermined radius of curvature, a thick backing material is molded and fixed to the thin backing material, and both backing materials are made to have the same acoustic impedance. This ultrasonic probe is characterized by:
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58230670A JPS60124199A (en) | 1983-12-08 | 1983-12-08 | Ultrasonic probe |
| DE8484308373T DE3485521D1 (en) | 1983-12-08 | 1984-12-03 | CURVED LINEAR ULTRASONIC CONVERTER ARRANGEMENT. |
| EP84308373A EP0145429B1 (en) | 1983-12-08 | 1984-12-03 | Curvilinear array of ultrasonic transducers |
| US06/930,104 US4734963A (en) | 1983-12-08 | 1986-11-13 | Method of manufacturing a curvilinear array of ultrasonic transducers |
| US06/930,993 US4686408A (en) | 1983-12-08 | 1986-11-14 | Curvilinear array of ultrasonic transducers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58230670A JPS60124199A (en) | 1983-12-08 | 1983-12-08 | Ultrasonic probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60124199A true JPS60124199A (en) | 1985-07-03 |
Family
ID=16911456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58230670A Pending JPS60124199A (en) | 1983-12-08 | 1983-12-08 | Ultrasonic probe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60124199A (en) |
-
1983
- 1983-12-08 JP JP58230670A patent/JPS60124199A/en active Pending
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