JP5705800B2 - 超音波による分析対象の凝集及びフローサイトメトリの応用 - Google Patents
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Description
この出願は、仮出願番号60/592,169、出願日2004年7月29日、発明の名称「フローサイトメトリ内の超音波分析対象の凝集および応用」の優先権を主張する。
(連邦の権利に関する記述)
この発明は、米国エネルギー省によって与えられた契約書番号W−7405−ENG−36の下で政府の支援によって行われた。政府は、発明の所定の権利を有する。
音場内の粒子に働く放射力の最初の定量的解析において、King,L.V.の「球体上の音響放射について」、Proc.R.Soc.A.,147,212−240,(1933)では音響放射力のみを考慮していた。Kingは非圧縮性球体を仮定し、波長より小さな半径を備えた粒子上への放射力は進行波内より定在波内でより大きくなることに着目した。
低電力音響凝集の最も一般的な前提は、1/4波長整合層を必要とすることである。この種のシステムでは、入射音響外乱は整合層内で共振的に増幅され、より高いエネルギー伝達効率をもたらす。しかし、進行波の場合でも、適切な配置のための平面または共焦点幾何形状の本質的な位置合わせの問題がそのプロセスをより困難にする。
Claims (27)
- 音響放射圧を使用して流体内で分析対象を凝集させるための装置であって、
高周波電気信号を出力するための波形発生器と、
1体の音響信号発生振動子と、
本質的に軸対称構造を有する管と、を備え、
前記1体の音響信号発生振動子は、前記管に音響的に結合し、且つ、前記高周波電気信号を音響信号に変換することに使用され、前記管を軸周りで自然共振させ、前記管の構造全体を励起する周波数を与え、
前記管は、当該管内で前記音響信号を前記音響放射圧に変換し、前記音響放射圧によって生成された共振圧力場の放射力ポテンシャルの最小域に向けて前記管内で前記分析対象を凝集させることを特徴とする装置。 - 前記管は、弾性材料を備えることを特徴とする請求項1記載の装置。
- 前記駆動振動子の形状は円筒型であることを特徴とする請求項1記載の装置。
- 前記波形発生器は、異なる周波数の様々な電圧波形を生成可能な任意の電源回路から選択されることを特徴とする請求項1に記載の装置。
- 前記波形発生器の出力を増幅するために電力増幅器をさらに備えることを特徴とする請求項1に記載の装置。
- 共振周波数を維持すると共に周囲温度の変動を補償するために、前記音響放射圧をモニターするためのモニター用(第二)振動子をさらに備えることを特徴とする請求項1に記載の装置。
- 前記第二振動子は、圧電セラミック、圧電塩、圧電高分子、圧電結晶、超磁歪材料及び電磁振動子からなる群から選択されることを特徴とする請求項6に記載の装置。
- 音響放射圧を使用して流体内で分析対象を凝集させるための方法であって、
単一の音響信号発生振動子を使用して、本質的に軸対称構造を有する管内に前記音響放射圧を発生させるステップと、
前記管を通して前記分析対象を含む流体を流すステップと、
前記振動子を駆動し、前記管を軸周りで自然共振させ、前記管の構造全体を励起する周波数を与えることによって前記管の外側境界面の移動を促すステップと、
前記音響放射圧によって生成された共振圧力場の放射力ポテンシャルの最小域に向けて前記管内で前記分析対象を凝集させるステップと、を含む方法。 - 前記外側境界面の移動をモニターするステップと、
モニター用振動子によって、共振周波数を維持すると共に周囲温度の変動に適応するように前記音響放射圧を調整するステップと、をさらに含むことを特徴とする請求項8に記載の方法。 - 分析対象を解析するためのフローサイトメータであって、
前記分析対象の流体サンプルストリームを受領するためのインレットを有する管と、
前記管に結合した音響信号発生振動子であって、当該音響信号発生振動子は、音響信号を前記管に発生させて、前記管を軸周りで自然共振させ、前記管の構造全体を励起する周波数を与えることによって前記管の外側境界面の移動を促すことが可能な音響放射圧を前記管内に引き起こすことにより、前記音響放射圧によって生成された共振圧力場の放射力ポテンシャルの最小域に向けて前記流体サンプルストリーム内で前記分析対象を凝集させる、音響信号発生振動子と、
前記分析対象を分析するための光学機器であって、前記分析対象を分析するために蛍光の複数の波長帯域と共に光散乱を形成するための光源を備える光学機器と、
前記分析対象の分子構成を決定するために、前記形成された光散乱及び蛍光の複数の波長帯域を受領する収集光学機器と、を備えることを特徴とするフローサイトメータ。 - 前記管は、本質的に軸対称構造を有していることを特徴とする請求項10に記載のフローサイトメータ。
- 前記管は円筒形状であることを特徴とする請求項10に記載のフローサイトメータ。
- 前記波形発生器は、異なる周波数の様々な電圧波形を生成可能な任意の電源回路から選択されることを特徴とする請求項10に記載のフローサイトメータ。
- 前記波形発生器の出力を増幅するために電力増幅器をさらに備えることを特徴とする請求項10に記載のフローサイトメータ。
- 共振周波数を維持すると共に周囲温度の変動を補償するために、前記音響放射圧をモニターするための、モニター用(第二)振動子をさらに備えることを特徴とする請求項10に記載のフローサイトメータ。
- 前記第二振動子は、圧電セラミック、圧電塩、圧電高分子、圧電結晶、超磁歪材料及び電磁振動子からなる群から選択されることを特徴とする請求項15に記載のフローサイトメータ。
- 前記光源がレーザであることを特徴とする請求項10に記載のフローサイトメータ。
- 前記光源がアークランプであることを特徴とする請求項10に記載のフローサイトメータ。
- フローサイトメトリの方法であって、
管のインレットに分析対象を含有する流体ストリームを供給するステップと、
前記管を音響放射圧に曝露して、前記管を軸周りで自然共振させ、前記管の構造全体を励起する周波数を与えることによって前記管の外側境界面の移動を促すことにより、前記音響放射圧によって生成された共振圧力場の放射力ポテンシャルの最小域に向けて前記流体ストリーム内で前記分析対象を凝集するステップと、
フローサイトメータによって前記分析対象を解析するステップと、を含む方法。 - 前記外側境界面の移動をモニターするステップと、
共振周波数を維持すると共に周囲温度の変動に適応するように前記音響放射圧を調整するステップと、をさらに含むことを特徴とする請求項19に記載の方法。 - フローサイトメトリの方法であって、
管のインレットに分析対象を含有する流体ストリームを供給するステップと、
前記管を音響放射圧に曝露して、前記管を軸周りで自然共振させ、前記管の構造全体を励起する周波数を与えることによって前記管の外側境界面の移動を促すことにより、前記音響放射圧によって生成された共振圧力場の放射力ポテンシャルの最小域に向けて前記流体ストリーム内で前記分析対象を凝集するステップと、
光学機器で前記分析対象を解析するステップと、を含み、
前記分析対象を解析するステップは、光散乱及び蛍光の複数の波長帯域を形成する光源に前記分析対象を曝露すること、光検出器で光散乱及び蛍光の複数の波長帯域を収集すること、及び、前記収集した波長帯域を識別して前記分析対象の分子構造を決定すること、
を含むことを特徴とする方法。 - 前記分析対象を分析するステップは、磁気モーメント信号を収集して、前記分析対象の分子構造を決定するステップを含んでいることを特徴とする請求項21に記載の方法。
- 分析対象を解析するためのフローサイトメータであって、
前記分析対象の流体ストリームを受領するためのインレットを有する管と、
前記管に音響的に結合した単一の音響信号発生振動子であって、当該単一の駆動振動子は、前記管内に音響放射圧を引き起こす音響信号を発生させることにより、前記管を軸周りで自然共振させ、前記管の構造全体を励起する周波数を与えることによって前記管の外側境界面の移動を形成して、前記音響放射圧によって生成された共振圧力場の放射力ポテンシャルの最小域に向けて前記流体ストリーム内で前記分析対象を凝集させる、音響信号発生振動子と、
前記分析対象を解析するために前記管に流動可能に接続されたフローサイトメータと、
を備えることを特徴とするフローサイトメータ。 - 前記外側境界面の移動をモニターし、共振周波数を維持すると共に周囲温度の変動に適応するように前記音響放射圧を調整するためのモニター用振動子をさらに備えることを特徴とする請求項23に記載のフローサイトメータ。
- 前記管は、本質的に軸対称構造を有していることを特徴とする請求項23に記載のフローサイトメータ。
- 前記管は、円筒形状を有していることを特徴とする請求項25に記載のフローサイトメータ。
- 音響放射圧を使用して流体内で分析対象を凝集させるための装置であって、
高周波電気信号を出力するための波形発生器と、
1体の音響信号発生振動子と、
本質的に軸対称構造を有する管と、を備え、
前記1体の音響信号発生振動子は、前記管に音響的に結合し、且つ、前記高周波電気信号を音響信号に変換することに使用され、前記管を軸周りで自然共振させ、前記管の構造全体を励起する周波数を与え、
前記管は、当該管内で前記音響信号を前記音響放射圧に変換し、前記音響放射圧によって生成された共振圧力場の放射力ポテンシャルの最小域に向けて前記管内で前記分析対象を凝集させ、
前記流体が流動する前記管の振動モードにおいて前記管の外側境界面変位が双極子を示すように、前記管の内径、外径及び駆動周波数が定められていることを特徴とする装置。
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US59216904P | 2004-07-29 | 2004-07-29 | |
US60/592,169 | 2004-07-29 | ||
US10/979,065 | 2004-11-02 | ||
US10/979,065 US7340957B2 (en) | 2004-07-29 | 2004-11-02 | Ultrasonic analyte concentration and application in flow cytometry |
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JP2007523739A Division JP2008508520A (ja) | 2004-07-29 | 2005-07-27 | 超音波による分析対象の凝集及びフローサイトメトリの応用 |
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US20150258470A1 (en) | 2015-09-17 |
US8783109B2 (en) | 2014-07-22 |
US9074979B2 (en) | 2015-07-07 |
EP1774283A4 (en) | 2013-07-17 |
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EP3032239A1 (en) | 2016-06-15 |
JP2012230121A (ja) | 2012-11-22 |
US10537831B2 (en) | 2020-01-21 |
EP3032239B1 (en) | 2018-10-24 |
EP1774283B1 (en) | 2016-01-20 |
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US7340957B2 (en) | 2008-03-11 |
US20130014826A1 (en) | 2013-01-17 |
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