JPS6346140A - Ultrasonic probe - Google Patents
Ultrasonic probeInfo
- Publication number
- JPS6346140A JPS6346140A JP19076086A JP19076086A JPS6346140A JP S6346140 A JPS6346140 A JP S6346140A JP 19076086 A JP19076086 A JP 19076086A JP 19076086 A JP19076086 A JP 19076086A JP S6346140 A JPS6346140 A JP S6346140A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- protrusion
- piezoelectric material
- back surface
- lead wire
- 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
- 239000000523 sample Substances 0.000 title description 10
- 239000000463 material Substances 0.000 claims description 34
- 239000004020 conductor Substances 0.000 claims description 16
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 13
- 230000005855 radiation Effects 0.000 description 8
- 239000007767 bonding agent Substances 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 238000002604 ultrasonography Methods 0.000 description 6
- 238000007740 vapor deposition Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Ultra Sonic Daignosis Equipment (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) [Abstract] 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、医療用超音波診断装置に用いられる超音波プ
ローブに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an ultrasonic probe used in a medical ultrasonic diagnostic apparatus.
従来の技術
近年、超音波診断装置は医療分野において盛んに利用さ
れ、これに伴い、頚部、あるいは胸部等のように超音波
プローブを当て難い部分で使用する場合が増えてきた。2. Description of the Related Art In recent years, ultrasonic diagnostic apparatuses have been widely used in the medical field, and as a result, they are increasingly being used in areas where it is difficult to apply an ultrasonic probe, such as the neck or chest.
以下、この超音波診断装置に用いられる従来の超音波探
触子について第３図を参照しながら説明する。Hereinafter, a conventional ultrasound probe used in this ultrasound diagnostic apparatus will be explained with reference to FIG.
第３図において、１０１は筐体、１０２は筐体１０１の
前面側に設けられた板状の圧電材、１０３は圧電材１０
２の背面に設けられた正、若しくは負の第１の電極、１
０４は圧電材１０２の前面に設けられた負、若しくは正
の第２の電極、１０６は第１の電極１０３に接続された
リード線、１０６は第２の電極１０４に接合されたリー
ド線で、これらリード線１０５．１０６はケーブル１０
７を介して超音波診断装置本体（図示省略）に接続され
ている。１０Ｂは第２の電極１０４の前面に設けられた
音響整合層、１０っけ第１の電極１０３の背面に設けら
れた背面負荷材である。上記のようにリード線１０６は
第１と第２の電極１０３と１０４の間の電気的絶縁を保
持するためＣζ音波放射面と同一面に接続されている。In FIG. 3, 101 is a housing, 102 is a plate-shaped piezoelectric material provided on the front side of the housing 101, and 103 is a piezoelectric material 10.
A positive or negative first electrode provided on the back surface of 2, 1
04 is a negative or positive second electrode provided on the front surface of the piezoelectric material 102, 106 is a lead wire connected to the first electrode 103, 106 is a lead wire joined to the second electrode 104, These leads 105 and 106 are connected to the cable 10.
It is connected to the main body of the ultrasonic diagnostic apparatus (not shown) via 7. 10B is an acoustic matching layer provided on the front surface of the second electrode 104, and a backside load material provided on the back surface of the first electrode 103. As described above, the lead wire 106 is connected to the same plane as the Cζ sound wave emission surface in order to maintain electrical insulation between the first and second electrodes 103 and 104.
発明が解決しようとする問題点
超音波プローブを頚部、あるいは胸部等の当て難い部分
で使用し、より均一な断層像を得るには、特に超音波放
射面を超音波プローブの全体形状、寸法に対し、なるべ
く有効面積を広くして被検体に当てることができるよう
にすることが必要である。しかし、上記従来の構成では
、リード線１０６を圧電材１０２の前面側で、第２の電
極１０４に接合しており、この接合にはある面積を必要
とし、この接合面積分だけ実効超音波放射開口面積の利
用率が減少する。この実効超音波放射開口面積を大きく
するには全体が大型化する等の問題があった。Problems to be Solved by the Invention In order to obtain more uniform tomographic images when using an ultrasound probe in areas that are difficult to reach, such as the neck or chest, it is necessary to adjust the ultrasound radiation surface to the overall shape and dimensions of the ultrasound probe. On the other hand, it is necessary to make the effective area as wide as possible so that it can be applied to the subject. However, in the above conventional configuration, the lead wire 106 is bonded to the second electrode 104 on the front side of the piezoelectric material 102, and this bonding requires a certain area, and the effective ultrasonic radiation is increased by the bonding area. Utilization rate of opening area decreases. Increasing the effective ultrasonic radiation aperture area has the problem of increasing the overall size.
そこで、本発明は、実効超音波放射面積を大きくするこ
とができ、しかも小型化を図ることができ、また電気的
導体の接合作業を容易に行うことができるようにした超
音波グローブを提供しようとするものである。SUMMARY OF THE INVENTION Therefore, the present invention provides an ultrasonic glove that can increase the effective ultrasonic radiation area, can be made smaller, and can easily join electrical conductors. That is.
問題点を解決するための手段
そして上記問題点を解決するための本発明の技術的な手
段は、背面側の両側部に第１と第２の突出部が設けられ
た少なくとも一個の圧電材と、この圧電材の背面底部、
第１の突出部の内側面及び第１の突出部の背面に連続し
て設けられた第１の電極と、上記圧電材の前面、第２の
突出部の外側面及び第２の突出部の背面に連続して設け
られた第２の電極と、これら第１と第２の電極における
第１と第２の突出部の背面部に接合された電気的導体を
備え、たものである。Means for solving the problems and technical means of the present invention for solving the above problems include at least one piezoelectric material provided with first and second protrusions on both sides of the back side. , the back bottom of this piezoelectric material,
A first electrode continuously provided on the inner surface of the first protrusion and the back surface of the first protrusion; The device includes a second electrode provided continuously on the back surface, and an electric conductor joined to the back surface portions of the first and second protrusions of the first and second electrodes.
作 用 上記技術的手段による作用は次のようになる。For production The effects of the above technical means are as follows.
すなわち、圧電材の前面側全体を実効超音波放射面積と
して大きく利用することができるので、従来に比べて小
型化を図ることができる。また電気的導体の接合個所が
高い位置にあり、他部とは区画されているので、電気的
導体の接合作業を容易に行うことができる。That is, since the entire front side of the piezoelectric material can be utilized as a large effective ultrasonic radiation area, it is possible to achieve a smaller size than in the past. Further, since the joint portion of the electric conductor is located at a high position and separated from other parts, the work of joining the electric conductor can be easily performed.
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。EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings.
まず、本発明の第１実施例について説明する。First, a first embodiment of the present invention will be described.
第１図は本発明の第１実施例における超音波プローブを
示す断面図である。FIG. 1 is a sectional view showing an ultrasonic probe in a first embodiment of the present invention.
第１図において、１は筐体、２は筐体１の前面側に設け
られた円板状の圧電材で、背面側の両側部に第１と第２
の突出部２ａと２ｂが設けられ、こｎら第１と第２の突
出部２ａと２ｂは中央部の肉厚の倍、若しくはそれ以上
の厚みで突出されている。３は正、若しくは負の第１の
電極で、圧電材２の背面底部、第１の突出部２ａの内側
面及び第１の突出部２ａの背面に連続して塗布、若しく
は蒸着等により薄膜状に設けられている。４は負、若し
くは正の第２の電極で、圧電材２の前面、第２の突出部
２ｂの外側面及び第２の突出部２ｂの背面に連続して塗
布、若しくは蒸着等により薄膜状に設けられている。５
は電気的導体であるリード線で、第１の電極３における
第１の突出部２ａの背面部３ａに接合剤により接合され
ている。６は電気的導体であるリード線で、第２の電極
４における第２の突出部２ｂの背面部４ａに接合剤によ
り接合されている。これらのリード線５．６はケーブル
７を介して超音波診断装置本体（図示省略）に接続され
ている。８は第２の電極４の前面に設けられた音響整合
層、９は第１と第２の突出部２ａと２ｂの間で、第１の
電極３の背面に設けられた背面負荷材である。In Fig. 1, 1 is a housing, 2 is a disc-shaped piezoelectric material provided on the front side of the housing 1, and a first and a second piezoelectric material are provided on both sides of the back side.
Projections 2a and 2b are provided, and the first and second projections 2a and 2b are projected with a thickness that is twice the thickness of the central portion or more. Reference numeral 3 denotes a positive or negative first electrode, which is continuously applied to the bottom of the back surface of the piezoelectric material 2, the inner surface of the first protrusion 2a, and the back surface of the first protrusion 2a, or is formed into a thin film by vapor deposition. It is set in. Reference numeral 4 denotes a negative or positive second electrode, which is continuously coated on the front surface of the piezoelectric material 2, the outer surface of the second protruding portion 2b, and the back surface of the second protruding portion 2b, or formed into a thin film by vapor deposition or the like. It is provided. 5
is a lead wire that is an electrical conductor, and is bonded to the back surface 3a of the first protrusion 2a of the first electrode 3 with a bonding agent. A lead wire 6 is an electrical conductor, and is bonded to the back surface 4a of the second protrusion 2b of the second electrode 4 with a bonding agent. These lead wires 5.6 are connected to the main body of the ultrasonic diagnostic apparatus (not shown) via a cable 7. 8 is an acoustic matching layer provided on the front surface of the second electrode 4, and 9 is a back load material provided on the back surface of the first electrode 3 between the first and second protrusions 2a and 2b. .
次に上記実施例の動作について説明する。音響整合層８
を被検体に当て、リード線６．６より、駆動電圧を印加
し、圧電材２を励起することにより、超音波を被検体に
放射し、被検体からの超音波エコー信号−を受信するこ
とにより超音波診断装置本体のデイスプレィ上に断層像
を表示することができる。そして第１の電極３と第２の
電極４におけるリード線６の接合位置は離隔しているの
で、駆動電圧印加時の電気的絶縁を保持することができ
る。また上記のようにリード線５．６は圧電材２の外径
寸法内で、第１と第２の電極３，４の背面側に接合して
いるので、実効超音波放射面積を大きくすることができ
る。またリード線５と６を接合する第１の電極３と第２
の電極４の背面３ａと４ａは高い位置にあり、他部とは
区画されているので、リード線５．６の接合作業を容易
に行うことができる。Next, the operation of the above embodiment will be explained. Acoustic matching layer 8
is applied to the subject, a driving voltage is applied from the lead wire 6.6, and the piezoelectric material 2 is excited, thereby emitting ultrasonic waves to the subject and receiving ultrasonic echo signals from the subject. Accordingly, a tomographic image can be displayed on the display of the main body of the ultrasound diagnostic apparatus. Since the joining positions of the lead wires 6 in the first electrode 3 and the second electrode 4 are separated from each other, electrical insulation can be maintained when a driving voltage is applied. Furthermore, as mentioned above, the lead wires 5 and 6 are connected to the back sides of the first and second electrodes 3 and 4 within the outer diameter of the piezoelectric material 2, so that the effective ultrasonic radiation area can be increased. Can be done. In addition, the first electrode 3 and the second electrode connecting the lead wires 5 and 6 are connected to each other.
Since the back surfaces 3a and 4a of the electrode 4 are located at a high position and are separated from other parts, the work of joining the lead wires 5.6 can be easily performed.
次に本発明の第２実施例について説明する。第２図は本
発明の第２実施例における超音波プローブを示す断面図
である。Next, a second embodiment of the present invention will be described. FIG. 2 is a sectional view showing an ultrasonic probe in a second embodiment of the present invention.
第２図において、１１は筐体、１２は筐体１１の前面側
中央部に設けられた円板状の圧電材で、背面側の両側部
に第１と第２の突出部１２ａと１２ｂが設けられ、これ
ら突出部１２ａ、１２ｂは中央部の肉厚の倍、若しくは
それ以上の厚みで突出されている。１３は筐体１１の前
面側外周部に設けられたリング状の圧電材で、背面側の
両側部に第１と第２の突出部１３ａと１３ｂが設けられ
、これら突出部１３ａ、１３ｂは中央部の肉厚の倍、若
しくはそれ以上の厚みで突出されている。１４は正、若
しくは負の第１の電極で、圧電材１２の背面底部、第１
の突出部１２ａの内側面及び第１の突出部１２ａの背面
に連続して塗布、若しくは蒸着等により薄膜状に設けら
れている。１６は負、若しくは正の第２の電極で、圧電
材１２の前面、第２の突出部１２ｂの外側面及び第２の
突出部１２ｂの背面に連続して塗布、若しく・は蒸着等
により薄膜状に設けられている。１６は正、若しくは負
の第１の電極で、圧電材１３の背面底部、第１の突出部
１３ａの内側面及び第１の突出部１３ａの背面に連続し
て塗布、若しくは蒸着等により薄膜状に設けられている
。１７は負、若しくは正の第２の電極で、圧電材１３の
前面、第２の突出部１３ｂの外側面及び第２の突出部１
３ｂの背面に連続して塗布、若しくは蒸着等により薄膜
状に設けられている。１８は電気的導体であるリード線
で、第１の電極１４における第１の突出部１２ａの背面
部１４ａに接合剤により接合されている。In FIG. 2, 11 is a housing, 12 is a disk-shaped piezoelectric material provided at the center of the front side of the housing 11, and first and second protrusions 12a and 12b are provided on both sides of the back side. These protruding portions 12a and 12b protrude with a thickness that is twice or more than the thickness of the central portion. Reference numeral 13 denotes a ring-shaped piezoelectric material provided on the outer periphery of the front side of the housing 11, and first and second protrusions 13a and 13b are provided on both sides of the back side, and these protrusions 13a and 13b are provided at the center. It protrudes with a thickness that is twice or more than the wall thickness of the part. 14 is a positive or negative first electrode, which is located at the bottom of the back surface of the piezoelectric material 12;
A thin film is continuously provided on the inner surface of the first protrusion 12a and the back surface of the first protrusion 12a by coating, vapor deposition, or the like. Reference numeral 16 denotes a negative or positive second electrode, which is continuously applied to the front surface of the piezoelectric material 12, the outer surface of the second protrusion 12b, and the back surface of the second protrusion 12b, or by vapor deposition, etc. It is provided in the form of a thin film. Reference numeral 16 denotes a positive or negative first electrode, which is formed into a thin film by continuous coating or vapor deposition on the bottom of the back surface of the piezoelectric material 13, the inner surface of the first protrusion 13a, and the back surface of the first protrusion 13a. It is set in. Reference numeral 17 denotes a negative or positive second electrode, which is connected to the front surface of the piezoelectric material 13, the outer surface of the second protrusion 13b, and the second protrusion 1.
It is provided in the form of a thin film by continuous coating or vapor deposition on the back surface of 3b. A lead wire 18 is an electrical conductor, and is bonded to the back surface 14a of the first protrusion 12a of the first electrode 14 with a bonding agent.
１９は電気的導体であるリード線で、第２の１甑１５に
おける第２の突出部１２ｂの背面部１５ａに接合剤によ
り接合されている。２ｏは電気的導体であるリード線で
、第１の電極１６における第１の突出部１３ａの背面部
１６ａに接合剤により接合されている。２１は電気的導
体であるリード線で、第２の電極１７における第２の突
出部１３ｂの背面部１ ？ ａに接合剤により接合され
ている。A lead wire 19 is an electrical conductor, and is bonded to the back surface 15a of the second protrusion 12b of the second pot 15 with a bonding agent. A lead wire 2o is an electrical conductor and is bonded to the back surface 16a of the first protrusion 13a of the first electrode 16 with a bonding agent. Reference numeral 21 denotes a lead wire which is an electrical conductor, and is connected to the back surface 1 of the second protrusion 13b of the second electrode 17. It is bonded to a with a bonding agent.
これらのリード線１８．１９．２０．２１はケーブル２
２を介して超音波診断装置本体に接続されている。２３
は第２の電極１６の前面に設けられた円板状の音響整合
層、２４は第２の電極１７の前面に設けられたリンク状
の音響整合層、２５は第１と第２の突出部１２ａと１２
ｂの間で、第１の電極１４の背面に設けられた円柱状の
背面負荷材、２６は第１と第２の突出部１３ａと１３ｂ
の間で、第１の電極１ｅの背面に設けられた円筒状の背
面負荷材、２７は上記各構成部品を保持するため筐体１
１内に充填された充填材である。These leads 18, 19, 20, 21 are cable 2
2 to the main body of the ultrasonic diagnostic apparatus. 23
24 is a disk-shaped acoustic matching layer provided on the front surface of the second electrode 17, 25 is a link-shaped acoustic matching layer provided on the front surface of the second electrode 17, and 25 is the first and second protrusion. 12a and 12
between b, a cylindrical back load material provided on the back surface of the first electrode 14;
A cylindrical back load material 27 provided on the back surface of the first electrode 1e is connected to the housing 1 for holding each of the above-mentioned components.
This is a filler filled in 1.
本実施例においても上記第１実施例と同様に電圧印加時
の電気的絶縁を保持することができ、また実効超音波放
射面積を大きくすることができ、またリード線１８〜２
１の接合作業を容易に行うことができる。In this embodiment, as in the first embodiment, electrical insulation can be maintained during voltage application, the effective ultrasonic radiation area can be increased, and the lead wires 18 to 2
1. The joining operation can be easily performed.
なお、上記第２実施例において、リンク状の圧電材等を
同心的に二個以上設けるようにしてもよ（／′１゜
発明の効果
以上述べたように本発明によれば、背面側の両側部に第
１と第２の突出部を有する少なくとも一個の圧電材を用
い、この圧電材の背面底部、第１の突出部の内側面及び
第１の突出部の背面；こ連続して第１の電極を設け、圧
電材の前面、第２の突出部の外側面及び第２の突出部の
背面に連続して第２の電極を設け、これら第１と第２の
電極における第１と第２の突出部の背面部に電気的導体
を接合している。従って圧電材の前面側全体を実効超音
波放射面積として大きく利用することができ、従来に比
べて小型化を図ることができる。また電気的導体の接合
個所が高い位置にあり、他部とは区画されているので、
電気的導体の接合作業を容易に行うことができる。In the second embodiment, two or more link-shaped piezoelectric materials etc. may be provided concentrically. At least one piezoelectric material having first and second protrusions on both sides is used; A second electrode is provided continuously on the front surface of the piezoelectric material, the outer surface of the second protrusion, and the back surface of the second protrusion. An electrical conductor is bonded to the back surface of the second protrusion.Therefore, the entire front side of the piezoelectric material can be used to a large extent as an effective ultrasonic radiation area, making it possible to achieve a smaller size than before. .Also, since the electrical conductor joints are located at a high position and are separated from other parts,
The work of joining electrical conductors can be easily performed.
第１図は本発明の第１実施し１］における超音波プロー
ブの断面図、第２図は本発明の第２実施例を示す断面図
、第３図は従来の超音波プローブの断面図である。
２・・・圧電材、２ａ・・第１の突出部、２ｂ・・第２
の突出部、３・・第１の電極、４・・・第２の電極、５
．６・・リード線（電気的導体）、８・・・音響整合層
、９・・・背面負荷材、１２・・・圧電材、１２ａ・・
・第１の突出部、１２ｂ・・・第２の突出部、１３・・
・圧電材、１３ ａ−第１の突出部、１３ｂ・・・第２
の突出部、１４・・第１の電極、１５・・・第２の電極
、１６・・・第１の電極、１了・・・第２の電極、１８
．１９．２０．２１・・・１リード線（電気的導体）、
２３．２４・・音響整合層、２５．２ｅ・・・背面負荷
材。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名ｌＩ
ｌ 図
第 ２ 図
第 ３ ロFig. 1 is a sectional view of an ultrasonic probe according to the first embodiment of the present invention, Fig. 2 is a sectional view showing a second embodiment of the invention, and Fig. 3 is a sectional view of a conventional ultrasonic probe. be. 2... Piezoelectric material, 2a... First protrusion, 2b... Second
protruding portion, 3...first electrode, 4...second electrode, 5
．． 6... Lead wire (electrical conductor), 8... Acoustic matching layer, 9... Back load material, 12... Piezoelectric material, 12a...
・First protrusion, 12b...Second protrusion, 13...
- Piezoelectric material, 13a-first protrusion, 13b... second
protruding portion, 14...first electrode, 15...second electrode, 16...first electrode, 1..second electrode, 18
．． 19.20.21...1 lead wire (electrical conductor),
23.24...Acoustic matching layer, 25.2e...Back load material. Name of agent: Patent attorney Toshio Nakao and one other person
l Figure 2 Figure 3 B
Claims (1)
なくとも一個の圧電材と、この圧電材の背面底部、第１
の突出部の内側面及び第１の突出部の背面に連続して設
けられた第１の電極と、上記圧電材の前面、第２の突出
部の外側面及び第２の突出部の背面に連続して設けられ
た第２の電極と、これら第１と第２の電極における第１
と第２の突出部の背面部に接合された電気的導体を備え
たことを特徴とする超音波プローブ。at least one piezoelectric material provided with first and second protrusions on both sides of the back side;
a first electrode continuously provided on the inner surface of the protrusion and the back surface of the first protrusion, and a first electrode provided continuously on the front surface of the piezoelectric material, the outer surface of the second protrusion and the back surface of the second protrusion A second electrode provided continuously, and a first electrode in these first and second electrodes.
and an electrical conductor joined to the back surface of the second protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19076086A JPH0655208B2 (en) | 1986-08-14 | 1986-08-14 | Ultrasonic probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19076086A JPH0655208B2 (en) | 1986-08-14 | 1986-08-14 | Ultrasonic probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6346140A true JPS6346140A (en) | 1988-02-27 |
| JPH0655208B2 JPH0655208B2 (en) | 1994-07-27 |
Family
ID=16263271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19076086A Expired - Fee Related JPH0655208B2 (en) | 1986-08-14 | 1986-08-14 | Ultrasonic probe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0655208B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0266098U (en) * | 1988-11-09 | 1990-05-18 | ||
| JP2020072323A (en) * | 2018-10-30 | 2020-05-07 | 京セラ株式会社 | Ultrasonic sensor |
-
1986
- 1986-08-14 JP JP19076086A patent/JPH0655208B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0266098U (en) * | 1988-11-09 | 1990-05-18 | ||
| JP2020072323A (en) * | 2018-10-30 | 2020-05-07 | 京セラ株式会社 | Ultrasonic sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0655208B2 (en) | 1994-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3610364B2 (en) | Multiple piezoelectric layer ultrasonic transducers for medical imaging | |
| US6831394B2 (en) | Backing material for micromachined ultrasonic transducer devices | |
| JPS6346140A (en) | Ultrasonic probe | |
| JP2606249Y2 (en) | Ultrasonic probe | |
| JP2951356B2 (en) | Ultrasonic probe and manufacturing method thereof | |
| JP3029931B2 (en) | Ultrasonic transducer manufacturing method | |
| JPH0833097A (en) | Piezoelectric element | |
| JP3354341B2 (en) | Ultrasonic probe | |
| JPH0628880Y2 (en) | Ultrasonic transducer | |
| JP3392985B2 (en) | Matrix ultrasonic probe | |
| JPS6316240Y2 (en) | ||
| JP2893361B2 (en) | Piezoelectric plate for probe and ultrasonic probe using the same | |
| JPH0419858B2 (en) | ||
| JP2000214144A (en) | Two-dimensional array ultrasonic probe | |
| JP2946097B2 (en) | Ultrasonic probe | |
| JPS59183365A (en) | Ultrasonic probe | |
| JPS6242373Y2 (en) | ||
| JPS63154166A (en) | Ultrasonic probe | |
| JP2969159B2 (en) | Ultrasonic probe manufacturing method | |
| JPS63242100A (en) | Manufacture of ultrasonic wave probe | |
| JPH0564292A (en) | Ultrasonic oscillator | |
| JPS6022719Y2 (en) | ultrasonic transducer | |
| JPH0299041A (en) | Ultrasonic probe | |
| JPS5991800A (en) | Manufacture of ultrasonic wave probe | |
| JPS6366270B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |