JP2013090746A5 - - Google Patents
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- JP2013090746A5 JP2013090746A5 JP2011234190A JP2011234190A JP2013090746A5 JP 2013090746 A5 JP2013090746 A5 JP 2013090746A5 JP 2011234190 A JP2011234190 A JP 2011234190A JP 2011234190 A JP2011234190 A JP 2011234190A JP 2013090746 A5 JP2013090746 A5 JP 2013090746A5
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- reception unit
- transmission
- ultrasonic transmission
- ultrasonic
- center frequency
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また、本発明の他の態様による超音波内視鏡システムは、第１超音波送受信部と、前記第１超音波送受信部の観察視野に向けて超音波を送受信可能な第２超音波送受信部と、前記第１超音波送受信部及び前記第２超音波送受信部を同時に駆動して異なる周波数の超音波を同時に送信する駆動部と、所定の音速を有し、前記第２超音波送受信部の観察視野に進退可能に配置された穿刺針と、前記穿刺針の少なくとも一部に配置された複数の凹部と、を備え、前記第２超音波送受信部の受信用中心周波数は式（２）を満たし、前記第１超音波送受信部の送信用中心周波数は式（３）を満たすものである。
Ｙ＝（Ｃ／ａ）×（ｎ／２） …（２）
但し、
Ｙ：第２超音波送受信部の送信用中心周波数
Ｃ：凹部を形成した部分の穿刺針上での音速
ａ：凹部と凹部との距離
ｎ：自然数
であり、
Ｙ２ｆ＜Ｘｆ１２ …（３）
但し、
Ｙ２ｆ：第２超音波送受信部からの送信波に対する受信波の二次高調波成分の中心周波数
Ｘｆ１２：第１超音波送受信部の送信用周波数帯域のうち画像生成に有効な強度帯域の低
周波側の閾値
である。
An ultrasonic endoscope system according to another aspect of the present invention includes a first ultrasonic transmission / reception unit and a second ultrasonic transmission / reception unit capable of transmitting / receiving ultrasonic waves toward an observation field of view of the first ultrasonic transmission / reception unit. A driving unit that drives the first ultrasonic transmission / reception unit and the second ultrasonic transmission / reception unit at the same time to transmit ultrasonic waves of different frequencies at the same time; A puncture needle disposed in an observation field so as to be able to advance and retreat, and a plurality of recesses disposed in at least a part of the puncture needle, and the reception center frequency of the second ultrasonic transmission / reception unit is expressed by Equation (2). The transmission center frequency of the first ultrasonic transmission / reception unit satisfies the expression (3).
Y = (C / a) × (n / 2) (2)
However,
Y: central frequency for transmission of the second ultrasonic transmission / reception unit C: speed of sound on the puncture needle in the part where the concave part is formed a: distance n between the concave part and the concave part n: natural number
Y 2f <X f12 (3)
However,
Y 2f : Center frequency X f12 of the second harmonic component of the received wave with respect to the transmission wave from the second ultrasonic transmission / reception unit: Low intensity band effective for image generation in the transmission frequency band of the first ultrasonic transmission / reception unit It is a threshold on the frequency side.
Claims (2)
前記第１超音波送受信部の観察視野に向けて超音波を送受信可能な第２超音波送受信部と、
前記第１超音波送受信部及び前記第２超音波送受信部を同時に駆動して異なる周波数の超音波を同時に送信する駆動部と、
所定の音速を有し、前記第２超音波送受信部の観察視野に進退可能に配置された穿刺針と、
前記穿刺針の少なくとも一部に配置された複数の凹部と、を備え、
前記第１超音波送受信部の送信用中心周波数は式（１）を満たすことを特徴とする超音波内視鏡システム。
Ｘ＝Ｙ＋α＝（（Ｃ／ａ）×（ｎ／２））＋α …（１）
但し、Ｘ：第１超音波送受信部の送信用中心周波数
Ｙ：第２超音波送受信部の送信用中心周波数
α：３［ＭＨｚ］以上
Ｃ：穿刺針上での音速
ａ：凹部と凹部との距離
ｎ：自然数
である。 A first ultrasonic transmission / reception unit;
A second ultrasonic transmission / reception unit capable of transmitting / receiving ultrasonic waves toward an observation field of view of the first ultrasonic transmission / reception unit;
A driving unit that simultaneously drives the first ultrasonic transmission / reception unit and the second ultrasonic transmission / reception unit to transmit ultrasonic waves of different frequencies;
A puncture needle having a predetermined sound velocity and arranged to be able to advance and retreat in the observation visual field of the second ultrasonic transmission / reception unit;
A plurality of recesses disposed in at least a part of the puncture needle,
The ultrasonic endoscope system according to claim 1, wherein a transmission center frequency of the first ultrasonic transmission / reception unit satisfies formula (1).
X = Y + α = ((C / a) × (n / 2)) + α (1)
However, X: Center frequency for transmission of the first ultrasonic transmission / reception unit Y: Center frequency for transmission of the second ultrasonic transmission / reception unit α: 3 [MHz] or more C: Sound velocity on the puncture needle a: Between the concave portion and the concave portion Distance n: a natural number.
前記第１超音波送受信部の観察視野に向けて超音波を送受信可能な第２超音波送受信部と、
前記第１超音波送受信部及び前記第２超音波送受信部を同時に駆動して異なる周波数の超音波を同時に送信する駆動部と、
所定の音速を有し、前記第２超音波送受信部の観察視野に進退可能に配置された穿刺針と、
前記穿刺針の少なくとも一部に配置された複数の凹部と、を備え、
前記第２超音波送受信部の受信用中心周波数は式（２）を満たし、
前記第１超音波送受信部の送信用中心周波数は式（３）を満たすことを特徴とする超音波内視鏡システム。
Ｙ＝（Ｃ／ａ）×（ｎ／２） …（２）
但し、Ｙ：第２超音波送受信部の送信用中心周波数
Ｃ：穿刺針上での音速
ａ：凹部と凹部との距離
ｎ：自然数
であり、
Ｙ２ｆ＜Ｘｆ１２ …（３）
但し、Ｙ２ｆ：第２超音波送受信部からの送信波に対する受信波の二次高調波成分の中心周波数
Ｘｆ１２：第１超音波送受信部の送信用周波数帯域のうち画像生成に有効な強度帯域の低周波側の閾値である。 A first ultrasonic transmission / reception unit;
A second ultrasonic transmission / reception unit capable of transmitting / receiving ultrasonic waves toward an observation field of view of the first ultrasonic transmission / reception unit;
A driving unit that simultaneously drives the first ultrasonic transmission / reception unit and the second ultrasonic transmission / reception unit to transmit ultrasonic waves of different frequencies;
A puncture needle having a predetermined sound velocity and arranged to be able to advance and retreat in the observation visual field of the second ultrasonic transmission / reception unit;
A plurality of recesses disposed in at least a part of the puncture needle,
The reception center frequency of the second ultrasonic transmission / reception unit satisfies the formula (2),
The ultrasonic endoscope system, wherein the transmission center frequency of the first ultrasonic transmission / reception unit satisfies the expression (3).
Y = (C / a) × (n / 2) (2)
Where Y: transmission center frequency of the second ultrasonic transmission / reception unit C: speed of sound on the puncture needle a: distance between the recesses and the recesses n: a natural number,
Y 2f <X f12 (3)
However, Y2f : Center frequency of the second harmonic component of the received wave with respect to the transmission wave from the second ultrasonic transmission / reception unit Xf12 : Intensity band effective for image generation in the transmission frequency band of the first ultrasonic transmission / reception unit Is a threshold on the low frequency side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011234190A JP5719275B2 (en) | 2011-10-25 | 2011-10-25 | Ultrasound endoscope system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011234190A JP5719275B2 (en) | 2011-10-25 | 2011-10-25 | Ultrasound endoscope system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2013090746A JP2013090746A (en) | 2013-05-16 |
| JP2013090746A5 true JP2013090746A5 (en) | 2014-05-29 |
| JP5719275B2 JP5719275B2 (en) | 2015-05-13 |
Family
ID=48614392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011234190A Active JP5719275B2 (en) | 2011-10-25 | 2011-10-25 | Ultrasound endoscope system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5719275B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6207956B2 (en) * | 2013-10-03 | 2017-10-04 | 東芝メディカルシステムズ株式会社 | Ultrasonic diagnostic equipment |
| JP2019055021A (en) * | 2017-09-21 | 2019-04-11 | Hoya株式会社 | Puncture needle for ultrasonic endoscope, and method of manufacturing the same |
| CN109431547A (en) * | 2018-12-14 | 2019-03-08 | 深圳先进技术研究院 | Multifrequency ultrasonic plane array wave endoscope system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0838473A (en) * | 1994-07-29 | 1996-02-13 | Hitachi Medical Corp | Ultrasonic diagnostic device |
| JPH1156851A (en) * | 1997-08-22 | 1999-03-02 | Fujitsu Ltd | Ultrasonograph and ultrasonic probe |
| US9022940B2 (en) * | 2008-07-18 | 2015-05-05 | Joseph H. Meier | Handheld imaging devices and related methods |
| US9521993B2 (en) * | 2008-12-30 | 2016-12-20 | Boston Scientific Scimed, Inc. | Echogenic enhancement for a needle |
| JP5438985B2 (en) * | 2009-02-10 | 2014-03-12 | 株式会社東芝 | Ultrasonic diagnostic apparatus and control program for ultrasonic diagnostic apparatus |
| JP2013517039A (en) * | 2010-01-19 | 2013-05-16 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Imaging device |
-
2011
- 2011-10-25 JP JP2011234190A patent/JP5719275B2/en active Active
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