JP5308812B2 - 組織の特性決定のための電磁センサ - Google Patents
組織の特性決定のための電磁センサ Download PDFInfo
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Description
1.約0.1 GHz〜約10 GHzの連続的周波数範囲での生きている組織の誘電特性の測定を可能にする。
2.単調で退屈なサンプル調製の必要性を排除する。そして、
3.実時間ベースでのデータ処理を可能にする。
本明細書では本発明を単に例示し図面を参照して説明する。特に詳細に図面を参照して、示されている詳細が例示として本発明の好ましい実施態様を例示考察することだけを目的としており、本発明の原理や概念の側面の最も有用でかつ容易に理解される説明であると考えられるものを提供するために提示していることを強調するものである。この点について、本発明を基本的に理解するのに必要である以上に詳細に本発明の構造の詳細は示さないが、図面について行う説明によって本発明のいくつもの形態を実施する方法は当業者には明らかになるであろう。
図1は、本発明のいくつかの実施態様による、組織の特性決定のためのシステム及びセンサを模式的に示す。
図2A〜2Bは、本発明のいくつかの実施態様による、組織の特性決定のためのセンサのための回路を模式的に示す。
図3A〜3Nは、本発明のいくつかの実施態様による、組織の特性決定のためのセンサの導電性構造のための様々な外形を模式的に示す。
図4A〜4Cは、本発明のいくつかの実施態様による、薄い柔軟な構造として形成された、組織の特性決定のためのセンサを模式的に示す。
図5A〜5Gは、本発明のいくつかの実施態様による、ハウジングと共に作動する、組織の特性決定のためのセンサを模式的に示す。
図6A〜6Cは、本発明のいくつかの実施態様による、平面螺旋と三次元螺旋を組合せる様々な態様を模式的に示す。
図7A及び7Bは、本発明の組織の特性決定のためのセンサの実験データを模式的に示す。
Claims (21)
- センサの近距離領域の組織の特性決定のためのセンサであって、
特性決定のための組織に侵入することなしに前記組織の縁に近接して配置されるように構成された広帯域共振器であって、前記縁に実質的に平行な平面で直径等価寸法Dを有し、かつ特徴サイズdを有する導電性構造を含む広帯域共振器、ただし、前記導電性構造は、予め決められた間隔寸法の間隔で配置された導電性材料を含み、前記特徴サイズdは、前記予め決められた間隔寸法に実質的に等しい;及び
外部システムとの通信を与えるための一つの導電性リード線
を含み、
前記広帯域共振器は、±15%のΔf/fで設計されておりかつ約λ〜約40λの自由空気波長範囲に相当する周波数で共振するように構成されており、前記Δfは、広帯域共振器の反射信号の反射係数振幅において少なくとも10%の変化がある周波数の範囲であり、前記fは、対応する共振周波数を表わし、前記λは直径等価寸法Dの約10倍であり、
約λ〜約40λの範囲の信号を受信すると、センサは組織中の近距離領域に電場及び磁場を誘導するように構成されており、前記近距離領域は一般的に円板状領域であり、約Dの直径及び特徴サイズdによって制限される侵入深さによって画定されており、
これにより近距離領域の組織は広帯域共振器の一部として効果的に機能してその共振値に影響を与え、これにより近距離領域の組織は広帯域共振器の共振応答によってその電磁特性によって特性決定されることを特徴とするセンサ。 - 特徴サイズdが直径等価寸法Dの約1/10〜1/20であることを特徴とする請求項1に記載のセンサ。
- 共振器が電子的支持体構造をさらに含むことを特徴とする請求項1に記載のセンサ。
- 共振応答が、反射信号の反射係数の振幅及び反射信号の反射係数の位相からなる群から選択されることを特徴とする請求項1に記載のセンサ。
- 共振器が、共振値の周りの約±50%の範囲及び共振値の周りの約±25%の範囲からなる群から選択される、前記Δf/fにおける範囲に応答するように構成されていることを特徴とする請求項1に記載のセンサ。
- 前記センサに対して遠距離領域において、センサが約λ〜約40λの自由空気波長範囲について0.1%未満の放射効率を有することを特徴とする請求項1に記載のセンサ。
- 送信ラインへのコネクタをさらに含み、前記コネクタがセンサと送信ラインの間に実質的なインピーダンス整合を与えることを特徴とする請求項1に記載のセンサ。
- センサを様々な用途に交換可能なように最適化するために、同調能力、スイッチング能力、及び置換能力からなる群から選択される能力をコネクタの構成要素に与えるために、コネクタと関連する連結構造をさらに含むことを特徴とする請求項1に記載のセンサ。
- 以下のものからなる群から選択される構造として形成されていることを特徴とする請求項1に記載のセンサ。
薄い柔軟な構造、
中空ハウジングに取付けられたときの操作のために適合された、薄い柔軟な構造、
電気絶縁材料で充填されたハウジングに取付けられたときの操作のために適合された、薄い柔軟な構造、
中空ハウジング中に挿入されたときの操作のために適合された、薄い柔軟な構造、及び
電気絶縁材料で充填されたハウジング中に挿入されたときの操作のために適合された、薄い柔軟な構造。 - 導電構造が、実質的に平坦な平面螺旋及び相互に巻きついた二つの実質的に平坦な平面螺旋からなる群から選択された態様として形成されていることを特徴とする請求項1に記載のセンサ。
- センサが、ハウジングに取付けられたとき及びハウジング中に挿入されたときからなる群から選択された態様の操作のために適合された、薄い柔軟な構造として形成されており、導電性構造が曲がってハウジングへの近接頂部を形成することを特徴とする請求項10に記載のセンサ。
- 導電性構造が円錐三次元螺旋として形成されていることを特徴とする請求項1に記載のセンサ。
- 漏斗形状の支持体上に付着されていることを特徴とする請求項12に記載のセンサ。
- 組織の方へ近接して延びて、円錐状開放空洞及び円筒状開放空洞からなる群から選択された空洞を形成する導電性材料の管状壁をさらに含むことを特徴とする請求項13に記載のセンサ。
- 近距離領域が開放空洞内に含まれることを特徴とする請求項14に記載のセンサ。
- 導電性構造が、相互の中に挿入された二つのコームとして形成されていることを特徴とする請求項1に記載のセンサ。
- 導電性構造が、自己支持支持体の上に付着されている導電性構造、薄い支持体の上に付着され、中空領域を形成するハウジングの上に配置されている導電性構造、及び薄い支持体の上に付着され、電気絶縁体から形成されるハウジングの上に配置されている導電性構造からなる群から選択されることを特徴とする請求項1に記載のセンサ。
- 導電性構造が実質的に平坦な平面螺旋及び三次元螺旋という二つの部分から形成されること、及び二つの部分が並列及び直列からなる群から選択された態様で連結されていることを特徴とする請求項1に記載のセンサ。
- 導電性構造が、誘導結合、容量結合、誘導結合かつ容量結合、及び抵抗結合からなる群から選択された態様で結合されていることを特徴とする請求項1に記載のセンサ。
- Dが約3mm〜約25mmであることを特徴とする請求項1に記載のセンサ。
- センサの近距離領域の組織の特性決定のためのセンサを含む組織の特性決定のためのシステムであって、センサが、
特性決定のための組織に侵入することなしに前記組織の縁に近接して配置されるように構成された広帯域共振器であって、構造要素、及び前記構造要素の間の予め決定された間隔寸法の間隔を有する導電性構造を含む広帯域共振器、ただし、前記導電性構造は、前記縁に実質的に平行な平面で直径等価寸法Dを有し、かつ前記予め決められた間隔寸法に実質的に等しい特徴サイズdを有する;
及び外部システムとの通信を与えるための一つの導電性リード線を含み、
前記広帯域共振器は、±15%のΔf/fで設計されておりかつ約λ〜約40λの自由空気波長範囲に相当する周波数で共振するように構成されており、前記Δfは、広帯域共振器の反射信号の反射係数振幅において少なくとも10%の変化がある周波数の範囲であり、前記fは、対応する共振周波数を表わし、前記λは直径等価寸法Dの約10倍であり、
約λ〜約40λの範囲の信号を受信すると、センサは組織中の近距離領域に電場及び磁場を誘導するように構成されており、前記近距離領域は一般的に円板状領域であり、約Dの直径及び特徴サイズdによって制限される侵入深さによって画定されており、これにより近距離領域の組織は広帯域共振器の一部として効果的に機能してその共振値に影響を与え、これにより近距離領域の組織は広帯域共振器の共振応答によってその電磁特性によって特性決定され、
システムは、一つの導電性リード線を介してセンサと通信する外部信号発生制御及び分析システムをさらに含むことを特徴とするシステム。
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US66584205P | 2005-03-29 | 2005-03-29 | |
US60/665,842 | 2005-03-29 | ||
PCT/IL2006/000392 WO2006103665A2 (en) | 2005-03-29 | 2006-03-29 | Electromagnetic sensors for tissue characterization |
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JP (1) | JP5308812B2 (ja) |
CN (2) | CN101184435B (ja) |
CA (1) | CA2603025C (ja) |
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