JP6440359B2 - 共通電気チャネル上で処理可能な超音波トランスデューサを有する超音波プローブ - Google Patents
共通電気チャネル上で処理可能な超音波トランスデューサを有する超音波プローブ Download PDFInfo
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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
- A61B8/12—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
- A61B8/13—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
- A61B8/44—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
-
- 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
- A61B8/4461—Features of the scanning mechanism, e.g. for moving the transducer within the housing of the probe
- A61B8/4466—Features of the scanning mechanism, e.g. for moving the transducer within the housing of the probe involving deflection of the probe
-
- 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/35—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams
- G10K11/352—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams by moving the transducer
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pathology (AREA)
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Description
本願は、2011年1月31日に出願された、米国仮出願第61/437,758号、発明の名称”共通電気チャネル上で処理可能な超音波トランスデューサを有する撮像プローブ”の優先権を主張する。同文献の全内容は、参照によって本願に組み込まれる。
Claims (19)
- 撮像プローブであって、
細長ボディ、
前記細長ボディ内に配置された第1超音波トランスデューサ、
を備え、
前記第1超音波トランスデューサは前記細長ボディの遠位端に配置され、
前記第1超音波トランスデューサは、超音波撮像ビームを前記細長ボディの外部の領域に出力し、前記領域から反射超音波撮像エネルギーを受信するように構成されており、
前記撮像プローブはさらに、
前記細長ボディ内に収容された第2超音波トランスデューサ、
前記細長ボディを通過して延伸し共通電気チャネルを画定する導電パス、
を備え、
前記第1超音波トランスデューサと前記第2超音波トランスデューサは、前記共通電気チャネルに接続され、
前記共通電気チャネルは、画像処理システムと電気的に接続可能であり、
前記第1超音波トランスデューサは、前記細長ボディの長手軸に対して垂直な回転軸周りで回転するように構成され、これにより前記超音波撮像ビームの撮像角をスキャンし、 前記第2超音波トランスデューサは、前記第1超音波トランスデューサに取り付けられており、
前記第1超音波トランスデューサは、1以上のバネによって前記共通電気チャネルと電気的に接続されており、
前記1以上のバネはねじりバネであり、
前記ねじりバネの軸は、実質的に前記回転軸と同一直線上にある
ことを特徴とする撮像プローブ。 - 前記第1超音波トランスデューサ上の導体領域は、前記第2超音波トランスデューサ上の導体領域と直接接触している
ことを特徴とする請求項1記載の撮像プローブ。 - 前記共通電気チャネルは、前記第1超音波トランスデューサと前記第2超音波トランスデューサに接続された唯一の電気チャネルである
ことを特徴とする請求項1または2記載の撮像プローブ。 - 前記撮像プローブは、前記細長ボディ内に収容され、前記共通電気チャネルに接続された、少なくとも1つの別の超音波トランスデューサを備える
ことを特徴とする請求項1から3のいずれか1項記載の撮像プローブ。 - 前記第1超音波トランスデューサと前記第2超音波トランスデューサは、並列接続されている
ことを特徴とする請求項1から4のいずれか1項記載の撮像プローブ。 - 前記第1超音波トランスデューサと前記第2超音波トランスデューサの少なくとも一方は、約20MHz以上の中心周波数を有する
ことを特徴とする請求項1から5のいずれか1項記載の撮像プローブ。 - 前記第1超音波トランスデューサと前記第2超音波トランスデューサの少なくとも一方は、電気フィルタを介して前記共通電気チャネルと接続されている
ことを特徴とする請求項1から6のいずれか1項記載の撮像プローブ。 - 前記第1超音波トランスデューサと前記第2超音波トランスデューサは、それぞれ実質的に重ならないスペクトル帯域幅を有する
ことを特徴とする請求項1から7のいずれか1項記載の撮像プローブ。 - 前記帯域幅は少なくとも6dB帯域幅である
ことを特徴とする請求項8記載の撮像プローブ。 - 前記第1超音波トランスデューサと前記第2超音波トランスデューサの中心周波数は、前記第1超音波トランスデューサと前記第2超音波トランスデューサの中心周波数の高調波を回避するように選択されている
ことを特徴とする請求項1から9のいずれか1項記載の撮像プローブ。 - 前記第1超音波トランスデューサは第1中心周波数を有し、
前記第2超音波トランスデューサは第2中心周波数を有し、
前記第1中心周波数と前記第2中心周波数は、少なくとも約2.5倍異なる
ことを特徴とする請求項8記載の撮像プローブ。 - 前記第1超音波トランスデューサの中心周波数と前記第2超音波トランスデューサの中心周波数との比率は約7〜10の範囲内にあり、
前記第1超音波トランスデューサからの前記超音波撮像ビームと前記第2超音波トランスデューサが出射した超音波ビームは、実質的に同一方向にある
ことを特徴とする請求項1から10のいずれか1項記載の撮像プローブ。 - 前記超音波撮像ビームは第1超音波ビームであり、
前記第2超音波トランスデューサは、別の超音波撮像ビームを生成するように構成された撮像トランスデューサである
ことを特徴とする請求項1から11のいずれか1項記載の撮像プローブ。 - 前記第2超音波トランスデューサは、前記別の超音波撮像ビームを前記第1超音波ビームとは異なる方向へ出力するように構成されている
ことを特徴とする請求項13記載の撮像プローブ。 - 前記第2超音波トランスデューサは、前記別の超音波撮像ビームを前記第1超音波ビームと実質的に平行な方向へ出力するように構成されている
ことを特徴とする請求項13記載の撮像プローブ。 - 前記第2超音波トランスデューサは、前記別の超音波撮像ビームを実質的に前記第1超音波ビームと同一直線上にない方向へ出力するように構成されている
ことを特徴とする請求項13記載の撮像プローブ。 - 前記第1超音波トランスデューサと前記第2超音波トランスデューサの少なくとも1つは、出射超音波エネルギーを集束するように構成された出射面を有する
ことを特徴とする請求項13から16のいずれか1項記載の撮像プローブ。 - 前記第1超音波トランスデューサは前記第2超音波トランスデューサよりも高い中心周波数を有し、
前記第1超音波トランスデューサと前記第2超音波トランスデューサは、出射超音波エネルギーを集束し、これにより前記第1超音波トランスデューサが出射した超音波エネルギーは前記第2超音波トランスデューサが出射した超音波エネルギーよりも近くに集束するように構成された、出射面を有する
ことを特徴とする請求項17記載の撮像プローブ。 - 前記撮像プローブは、前記細長ボディ内に収容された撮像部品を備え、
前記第1超音波トランスデューサは、前記撮像部品内に配置されている
ことを特徴とする請求項1から12のいずれか1項記載の撮像プローブ。
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