JPS622815B2 - - Google Patents
Info
- Publication number
- JPS622815B2 JPS622815B2 JP55119031A JP11903180A JPS622815B2 JP S622815 B2 JPS622815 B2 JP S622815B2 JP 55119031 A JP55119031 A JP 55119031A JP 11903180 A JP11903180 A JP 11903180A JP S622815 B2 JPS622815 B2 JP S622815B2
- Authority
- JP
- Japan
- Prior art keywords
- transducer
- probe
- driving
- drive motor
- vibrator
- 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.)
- Expired
Links
- 239000000523 sample Substances 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000001839 endoscopy Methods 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012327 Endoscopic diagnosis Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Ultra Sonic Daignosis Equipment (AREA)
Description
【発明の詳細な説明】
本発明は超音波診断装置用スキヤナ機構、特に
一定の方向に超音波ビームを送受波する固定ビー
ム型振動子を機械的に走査させる改良された超音
波診断装置用スキヤナ機構に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scanner mechanism for an ultrasonic diagnostic device, and particularly to an improved scanner for an ultrasonic diagnostic device that mechanically scans a fixed beam type transducer that transmits and receives an ultrasonic beam in a fixed direction. Regarding the mechanism.
超音波ビームを被検体中に放射し被検体内の音
響インピーダンスの差から得られる反射エコーを
受波して所望診断部位を画像表示する超音波診断
装置が周知であり、非観血的に診断作用が得られ
ることから広範囲に利用されている。前述した超
音波ビームの送受波を行うために、PZT等の電気
音響変換素子から成る振動子が用いられ、従来よ
り振動子から一定の方向に単一の超音波ビームを
放射する固定ビーム型振動子が一般に用いられ、
小型低価格な振動子として種々の利点を有する。 Ultrasonic diagnostic equipment that emits an ultrasound beam into a subject and receives reflected echoes obtained from differences in acoustic impedance within the subject to display an image of a desired diagnosis area is well-known, and can be used for non-invasive diagnosis. It is widely used because of its effectiveness. In order to transmit and receive the ultrasonic beams mentioned above, a transducer made of an electroacoustic transducer such as PZT is used. Conventionally, a fixed beam type vibration is used in which a single ultrasonic beam is emitted from the transducer in a fixed direction. child is commonly used,
It has various advantages as a small and low-cost vibrator.
しかしながら、この種の固定ビーム型振動子で
は、所望の走査面に沿つた画像表示を行うため
に、振動子自体を機械的に走査しなければなら
ず、このための従来のスキヤナは、モータ主軸の
回転を直接的または間接的に振動子に伝達して、
プローブを所定の走査面に沿つてリニア走査ある
いはセクタ走査させる構造から成り、この従来装
置では、スキヤナの構造が複雑大型化するという
欠点があり、また走査精度および応答性が悪いと
いう欠点があつた。 However, with this type of fixed beam transducer, the transducer itself must be mechanically scanned in order to display an image along the desired scanning plane, and conventional scanners for this purpose use a motor main shaft. directly or indirectly transmits the rotation of
It consists of a structure in which the probe is linearly scanned or sector scanned along a predetermined scanning plane, and this conventional device has the disadvantage that the scanner structure is complex and large, and the scanning accuracy and response are poor. .
更に近年の超音波診断装置では、振動子を内蔵
したプローブを被検体の体腔内に挿入して体腔近
傍の臓器あるいは患部を近距離から画像表示でき
る装置が実用化されているが、このような内視用
超音波プローブでは、プローブ内に走査用駆動装
置を組み込むことが困難なために、走査型内視用
超音波プローブを得ることが難しいという問題が
あつた。 Furthermore, in recent years, ultrasonic diagnostic equipment has been put into practical use that can display images of organs or affected areas near the body cavity from a short distance by inserting a probe with a built-in transducer into the body cavity of the subject. In the ultrasonic probe for endoscopy, there has been a problem in that it is difficult to incorporate a scanning drive device into the probe, so it is difficult to obtain a scanning type ultrasonic probe for endoscopy.
本発明は上記従来の課題に鑑みなされたもの
で、その目的は小型簡単な構造で高精度の走査作
用を得ることのできる改良されたスキヤナ機構を
提供することにある。 The present invention has been made in view of the above-mentioned problems in the prior art, and its object is to provide an improved scanner mechanism that is small and simple in structure and capable of obtaining a highly accurate scanning action.
上記目的を達成するために、本発明は一定の方
向に超音波ビームを送受波し所定の走査領域内で
走査自在に支持された固定ビーム型振動子と、振
動子を所定の走査領域内で機械的に走査させるた
めの駆動モータと、該駆動モータの駆動力を振動
子に伝達するための液圧伝達機構と、を含むこと
を特徴とする。 In order to achieve the above object, the present invention includes a fixed beam transducer that transmits and receives an ultrasonic beam in a fixed direction and is supported so as to be able to scan freely within a predetermined scanning area; It is characterized in that it includes a drive motor for mechanically scanning, and a hydraulic pressure transmission mechanism for transmitting the driving force of the drive motor to the vibrator.
以下図面に基づいて本発明の好適な実施例を説
明する。 Preferred embodiments of the present invention will be described below based on the drawings.
図には、本発明を用いて振動子をセクタ走査す
る実施例が示され、屈曲状態で使用される経食道
内視用超音波診断装置に好適である。内部に電気
音響変換素子を有する振動子１０は支軸１２に回
動自在に軸支され、振動子１０からは一定の方向
に向かつて超音波ビーム１００が放射されてい
る。支軸１２には回転アーム１４が固定され、ア
ーム１４の一端には付勢ばね１６が掛けられ、ア
ーム１４すなわち振動子１０に破線矢印で示され
る時計方向の付勢力が与えられている。 The figure shows an embodiment in which a transducer performs sector scanning using the present invention, and is suitable for a transesophageal endoscopic ultrasonic diagnostic apparatus used in a bent state. A vibrator 10 having an electroacoustic transducer inside thereof is rotatably supported on a support shaft 12, and an ultrasonic beam 100 is radiated from the vibrator 10 in a fixed direction. A rotary arm 14 is fixed to the support shaft 12, and a biasing spring 16 is applied to one end of the arm 14 to apply a clockwise biasing force to the arm 14, that is, to the vibrator 10, as indicated by the broken line arrow.
前記振動子１０にセクタ走査駆動力を伝達する
ために、液圧伝達機構１８が設けられ、該液圧伝
達機構１８を介して駆動モータ２０の駆動力が振
動子１０に伝達される。 In order to transmit the sector scanning driving force to the vibrator 10, a hydraulic pressure transmission mechanism 18 is provided, and the driving force of the drive motor 20 is transmitted to the vibrator 10 via the hydraulic pressure transmission mechanism 18.
液圧伝達機構１８は原動シリンダ２２および従
動シリンダ２４を含み、両シリンダ２２，２４の
液室が可撓導管２６によつて接続されている。両
シリンダ２２，２４および可撓導管２６内には
水、油あるいはその他の媒介液によつて充満され
ており、原動シリンダ２２の原動ピストン２８が
移動する時に、従動シリンダ２４の従動ピストン
３０が良好な応答性で原動ピストン２８に対応し
た移動を行う。 The hydraulic pressure transmission mechanism 18 includes a driving cylinder 22 and a driven cylinder 24 , and the liquid chambers of both cylinders 22 and 24 are connected by a flexible conduit 26 . Both cylinders 22, 24 and the flexible conduit 26 are filled with water, oil, or other media so that when the driving piston 28 of the driving cylinder 22 moves, the driven piston 30 of the driven cylinder 24 is free. The movement corresponding to the driving piston 28 is performed with good responsiveness.
従動ピストン３０はリンク３２を介して前記回
転アーム１４の他端に接続され、従動ピストン３
０の移動によつてアーム１４すなわち振動子１０
を矢印で示されるように回動することができる。 The driven piston 30 is connected to the other end of the rotary arm 14 via a link 32.
0, the arm 14, that is, the vibrator 10
can be rotated as shown by the arrow.
一方、原動ピストン２８はリンク３４を介して
駆動モータ２０の主軸２０ａに固定された回転子
３６に連結され、駆動モータ２０を揺動駆動する
ことによつて原動ピストン２８を所定量移動する
ことができる。 On the other hand, the driving piston 28 is connected to a rotor 36 fixed to the main shaft 20a of the drive motor 20 via a link 34, and by swinging the driving motor 20, the driving piston 28 can be moved by a predetermined amount. can.
以上のようにして、実施例においては、駆動モ
ータ２０の駆動力が液圧伝達機構１８を介して振
動子１０に伝達されるので、振動子１０の超音波
ビーム１００を所定角度範囲内で所定の操返し周
期にてセクタ走査制御することができる。そし
て、本発明においては、前述した振動子１０、支
軸１２、回転アーム１４、付勢ばね１６、従動シ
リンダ２４、従動ピストン３０およびリンク３２
をプローブ３８として一体に組み込み、このプロ
ーブ３８に対して駆動モータ２０、原動シリンダ
２２および原動ピストン２８を含む駆動側から液
圧を用いて駆動力を供給することができ、固定配
置された駆動側に対してプローブ３８を任意の診
断部位に移動することが可能となり、またプロー
ブ３８は小型化された簡単な構造とすることがで
きるので、該プローブ３８を食道等の体腔を介し
て被検体内に挿入し、該体腔から近距離にある被
検体内部の臓器あるいは患部を精密に内視診断す
ることが可能となる。 As described above, in the embodiment, the driving force of the drive motor 20 is transmitted to the transducer 10 via the hydraulic pressure transmission mechanism 18, so that the ultrasonic beam 100 of the transducer 10 is directed within a predetermined angle range. Sector scan control can be performed at a repeating cycle of . In the present invention, the above-mentioned vibrator 10, support shaft 12, rotating arm 14, biasing spring 16, driven cylinder 24, driven piston 30, and link 32
is integrally incorporated as a probe 38, and a driving force can be supplied to the probe 38 from a driving side including the drive motor 20, the driving cylinder 22, and the driving piston 28 using hydraulic pressure, and the driving side is fixedly arranged. However, the probe 38 can be moved to any diagnostic site, and the probe 38 can be made into a small and simple structure, so the probe 38 can be moved into the subject through a body cavity such as the esophagus. By inserting the device into the body cavity, it becomes possible to perform precise endoscopic diagnosis of internal organs or diseased parts within the subject that are close to the body cavity.
本発明において、プローブ３８と駆動側とは単
に液体が導かれる可撓導管２６によつてのみ接続
されているので、プローブ３８を任意の体腔へ挿
入し、また体腔内を自由に移動することが可能と
なる。 In the present invention, since the probe 38 and the driving side are connected only by the flexible conduit 26 through which liquid is introduced, the probe 38 can be inserted into any body cavity and freely moved within the body cavity. It becomes possible.
図示した実施例においては、プローブ３８内の
移動量と駆動側の移動量とを１対１に対応させて
いるので、駆動側の移動量制御が簡単となる利点
があるが、本発明においては、これらの駆動比率
は任意に設定することが可能である。また実施例
においては、振動子１０をセクタ走査する構造が
示されているが、必要に応じてリニア走査される
振動子をプローブ内に設けることも可能である。
更に実施例においては、振動子１０のビーム１０
０の走査角度はプローブ３８内の移動量と駆動側
の移動量とが１対１に設定されていることから、
駆動モータ２０の揺動角度を角度検出器により検
出することにより行うことができ、またこの角度
検出は角度検出器以外に任意の検出器にて行うこ
とが可能である。 In the illustrated embodiment, there is a one-to-one correspondence between the amount of movement within the probe 38 and the amount of movement on the driving side, which has the advantage of simplifying the control of the amount of movement on the driving side. , these drive ratios can be set arbitrarily. Further, in the embodiment, a structure in which the transducer 10 is scanned in sectors is shown, but it is also possible to provide a transducer that is linearly scanned in the probe, if necessary.
Furthermore, in the embodiment, the beam 10 of the vibrator 10
The scanning angle of 0 means that the amount of movement within the probe 38 and the amount of movement on the driving side are set in a one-to-one ratio.
This can be done by detecting the swing angle of the drive motor 20 with an angle detector, and this angle detection can be done with any detector other than the angle detector.
以上説明したように、本発明によれば、振動子
の機械的走査を液圧にて伝達された駆動力により
行うことができるので、プローブ自体を従来と比
して著しく小型簡素化することができ、特に内視
用プローブの実現に多大の寄与をするものであ
る。 As explained above, according to the present invention, the mechanical scanning of the transducer can be performed by the driving force transmitted by hydraulic pressure, so the probe itself can be significantly smaller and simpler than the conventional one. In particular, this will greatly contribute to the realization of endoscopy probes.
図は本発明に係るスキヤナ機構の好適な実施例
を示す概略説明図である。
１０……振動子、１８……液圧伝達機構、２０
……駆動モータ、２２……原動シリンダ、２４…
…従動シリンダ、２６……可撓導管、３８……プ
ローブ。
The figure is a schematic explanatory diagram showing a preferred embodiment of the scanner mechanism according to the present invention. 10... Vibrator, 18... Hydraulic pressure transmission mechanism, 20
...Drive motor, 22...Driving cylinder, 24...
...driven cylinder, 26 ... flexible conduit, 38 ... probe.
Claims (1)
走査領域内で走査自在に支持された固定ビーム型
振動子と、振動子を所定の走査領域内で機械的に
走査させるための駆動モータと、該駆動モータの
駆動力を振動子に伝達するための液圧伝達機構
と、を含むことを特徴とする超音波診断装置用ス
キヤナ機構。 ２ 特許請求の範囲１記載のスキヤナ機構におい
て、液圧伝達機構は駆動モータに連結された原動
シリンダと、振動子に連結された従動シリンダ
と、両シリンダを連結接続する可撓導管と、を含
むことを特徴とする超音波診断装置用スキヤナ機
構。 ３ 特許請求の範囲２記載のスキヤナ機構におい
て、振動子と従動シリンダとはプローブ内に一体
に組み込まれていることを特徴とする超音波診断
装置用スキヤナ機構。[Claims] 1. A fixed beam transducer that transmits and receives an ultrasonic beam in a fixed direction and is supported so as to scan freely within a predetermined scanning area, and a fixed beam transducer that is mechanically scanned within a predetermined scanning area. 1. A scanner mechanism for an ultrasonic diagnostic apparatus, comprising: a drive motor for driving the transducer; and a hydraulic pressure transmission mechanism for transmitting the driving force of the drive motor to the vibrator. 2. In the scanner mechanism according to claim 1, the hydraulic pressure transmission mechanism includes a driving cylinder connected to a drive motor, a driven cylinder connected to a vibrator, and a flexible conduit connecting both cylinders. A scanner mechanism for an ultrasonic diagnostic device characterized by the following. 3. The scanner mechanism for an ultrasonic diagnostic apparatus according to claim 2, wherein the transducer and the driven cylinder are integrated into the probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11903180A JPS5743734A (en) | 1980-08-30 | 1980-08-30 | Scanner system for ultrasonic diagnostic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11903180A JPS5743734A (en) | 1980-08-30 | 1980-08-30 | Scanner system for ultrasonic diagnostic apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5743734A JPS5743734A (en) | 1982-03-11 |
| JPS622815B2 true JPS622815B2 (en) | 1987-01-21 |
Family
ID=14751259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11903180A Granted JPS5743734A (en) | 1980-08-30 | 1980-08-30 | Scanner system for ultrasonic diagnostic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5743734A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5125756A (en) * | 1974-08-27 | 1976-03-02 | Matsushita Electric Ind Co Ltd | |
| JPS5216674A (en) * | 1975-07-30 | 1977-02-08 | Hitachi Ltd | Proximity switch |
| JPS56100664A (en) * | 1980-01-11 | 1981-08-12 | Nippon Sheet Glass Co Ltd | Nozzle for discharging molten heat-softenable material |
| JPS56106645A (en) * | 1980-01-31 | 1981-08-25 | Tatsuo Nagasaki | Endoscope ultrasonic diagnosing device |
-
1980
- 1980-08-30 JP JP11903180A patent/JPS5743734A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5125756A (en) * | 1974-08-27 | 1976-03-02 | Matsushita Electric Ind Co Ltd | |
| JPS5216674A (en) * | 1975-07-30 | 1977-02-08 | Hitachi Ltd | Proximity switch |
| JPS56100664A (en) * | 1980-01-11 | 1981-08-12 | Nippon Sheet Glass Co Ltd | Nozzle for discharging molten heat-softenable material |
| JPS56106645A (en) * | 1980-01-31 | 1981-08-25 | Tatsuo Nagasaki | Endoscope ultrasonic diagnosing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5743734A (en) | 1982-03-11 |
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