JP5204116B2 - 撓みモードの圧電性変換器を用いる増強された超音波画像診断用プローブ - Google Patents
撓みモードの圧電性変換器を用いる増強された超音波画像診断用プローブ Download PDFInfo
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
- A61B8/4488—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer the transducer being a phased array
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/13—Tomography
- A61B8/14—Echo-tomography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4438—Means for identifying the diagnostic device, e.g. barcodes
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
- A61B8/445—Details of catheter construction
Description
超音波圧電性変換器からの増強された受信信号を生み出す方法は、以下の例を参照することで述べられる。
12 基板
13 前面
14 第1誘電層
20 下部電極
22 圧電性配列素子
28 第2誘電フィルム
32 頂部電極
34 ビア
35 圧電性薄膜
36 絶縁フィルム
42 導電フィルム
44 半導体デバイス
46 半田バンプ
48 半田パッド
50 エアーバックキャビティ
58 端部
62 薄いシリコン層
64 二酸化シリコン層
68 開口
69 相隔ビア
80 pMUTデバイス構造
120 SOI基板
125 基部
136 絶縁層
137 サイドウォール
142 金属層
150 エアーバックキャビティ
162 デバイスシリコン層
175 SiO2層
230 電気的相互接続
256 相互接続層
320 IC基板
500、600 カテーテル
507、1507 フレックスケーブル
509 ハウジング
540、640、1740 音響窓
550、650、1750 音響調整材料
1000 前方視画像診断プローブデバイス
Claims (14)
- 圧電性超音波変換器からの増強された受信信号を生成する方法であって、前記方法は、
前記圧電性超音波変換器の圧電性素子に双極性伝送サイクルパルスを印加する段階であって、音響エネルギーを生成し、及び伝送するために、前記圧電性素子は撓みモードにおいて操作可能であり、前記双極性伝送サイクルパルスは、前記圧電性素子の強誘電体の抗電圧より大きな最大ピークの伝送電圧を有しているところの段階と、
前記圧電性素子によって前記音響エネルギーを受信する段階であって、前記音響エネルギーを電圧に変換するために、前記圧電性素子は、撓みモード共鳴において、前記音響エネルギーに応答するように構成されているところの段階と、
前記圧電性超音波変換器から増強された受信信号を生成するために、前記圧電性素子が前記音響エネルギーを受信するのに先立って、及び/または前記圧電性素子が前記音響エネルギーを受信すると同時に、撓みモード共鳴において前記圧電性素子にDCバイアスを印加する段階であって、前記増強された受信信号は、DCバイアスを印加しない場合の前記圧電性超音波変換器により生成された受信信号より大きいところの段階と、
を備えている方法。 - 圧電性超音波変換器からの増強された受信信号を生成する方法であって、前記方法は、
前記圧電性超音波変換器の圧電性素子に正弦波双極性伝送サイクルパルスを印加する段階であって、音響反響を提供する音響信号を作り出すために、前記圧電素子は撓みモードにおいて操作可能であり、前記正弦波双極性伝送サイクルパルスは、前記圧電性素子の抗電圧より大きな最大ピークの伝送電圧を有しているところの段階と、
前記圧電性素子によって前記音響反響を受信する段階であって、前記音響反響を電圧に変換するために、前記圧電性素子は、撓みモード共鳴において、前記音響反響に応答するように構成されているところの段階と、
前記圧電性超音波変換器から増強された受信信号を生成するために、前記圧電性素子が前記音響反響を受信するのに先立って、及び/または前記圧電性素子が前記音響反響を受信すると同時に、撓みモード共鳴において前記圧電性素子にDCバイアスを印加する段階であって、前記増強された受信信号は、DCバイアスを印加しない場合の前記圧電性超音波変換器により生成された受信信号より大きいところの段階と、
を備えている方法。 - 前記DCバイアスは、前記圧電性素子の撓みモード共鳴の間に印加される請求項1または2に記載の方法。
- 前記DCバイアスは、前記音響エネルギーまたは前記音響反響が受信される前に、及び前記圧電性素子の撓みモード共鳴の間に印加される請求項1または2に記載の方法。
- 前記DCバイアスは、前記音響エネルギーまたは前記音響反響が受信される前に印加され、及び前記圧電性素子の前記撓みモード共鳴の間に終了される請求項1または2に記載の方法。
- 前記印加されたDCバイアスは、前記圧電性素子に印加され、及び前記圧電性素子の撓みモード共鳴の間に維持されている請求項1または2に記載の方法。
- 前記DCバイアスは、前記圧電性素子に印加された、前記双極性伝送サイクルパルスの最大ピークの伝送電圧または前記正弦波双極性伝送サイクルパルスの停止電圧の極性と反対の極性である請求項1または2に記載の方法。
- 前記増強された受信信号に対して信号調整を適用する段階をさらに備えている請求項1または2に記載の方法。
- 前記信号調整は、前記生成され増強された受信信号から、DCバイアスに起因する信号成分を分離するために構成されている請求項8に記載の方法。
- 前記信号調整は、前記増強された受信信号を増幅するために構成されている請求項8に記載の方法。
- 撓みモード変換器の増強された受信信号を生成する方法であって、前記方法は、
圧電性超音波変換器の圧電性素子に双極性伝送電圧信号を印加する段階であって、前記圧電性素子は撓みモードで操作可能であり、及び強誘電体の抗電圧を有しており、前記双極性伝送電圧信号は前記強誘電体の抗電圧より大きい最大ピークの伝送電圧を有しているところの段階と、
前記圧電性素子に印加された前記双極性伝送電圧信号に応答して前記圧電性超音波変換器で音響信号を生成する段階であって、前記音響信号は音響反響を提供するところの段階と、
前記圧電性素子によって前記音響反響を受信する段階であって、前記音響反響を電圧に変換するために、前記圧電性素子は、撓みモードにおける共鳴で前記音響反響に応答するように構成されているところの段階と、
前記圧電性超音波変換器により増強された受信信号を生成する段階であって、前記増強された受信信号は、印加される双極性伝送電圧信号がない場合の前記圧電性超音波変換器により生成された受信信号より大きいところの段階と、
を備えている方法。 - 前記圧電性素子に追加の半波長伝送電圧信号を印加する段階であって、前記追加の半波長伝送電圧信号は前記強誘電体の抗電圧より大きいところの段階をさらに備えている請求項11に記載の方法。
- 少なくとも前記圧電性素子が前記音響反響を受信すると同時に、前記圧電性素子にDCバイアスを印加する段階をさらに備えている請求項11に記載の方法。
- 前記双極性伝送電圧信号または前記追加の半波長伝送電圧信号は、正弦波の形態である請求項11または12に記載の方法。
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US (1) | US20100168583A1 (ja) |
EP (1) | EP2076180A1 (ja) |
JP (1) | JP5204116B2 (ja) |
KR (3) | KR20130014619A (ja) |
CN (1) | CN101662989B (ja) |
AU (1) | AU2006350241B2 (ja) |
CA (1) | CA2667751A1 (ja) |
WO (1) | WO2008054395A1 (ja) |
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AU2006350241B2 (en) | 2013-01-31 |
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CA2667751A1 (en) | 2008-05-08 |
AU2006350241A1 (en) | 2008-05-08 |
US20100168583A1 (en) | 2010-07-01 |
CN101662989A (zh) | 2010-03-03 |
EP2076180A1 (en) | 2009-07-08 |
JP2010508888A (ja) | 2010-03-25 |
KR101335200B1 (ko) | 2013-11-29 |
KR20130014618A (ko) | 2013-02-07 |
CN101662989B (zh) | 2013-10-30 |
KR20130014619A (ko) | 2013-02-07 |
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