JP2013543747A5 - - Google Patents

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JP2013543747A5
JP2013543747A5 JP2013537934A JP2013537934A JP2013543747A5 JP 2013543747 A5 JP2013543747 A5 JP 2013543747A5 JP 2013537934 A JP2013537934 A JP 2013537934A JP 2013537934 A JP2013537934 A JP 2013537934A JP 2013543747 A5 JP2013543747 A5 JP 2013543747A5
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  1. 血管内器具の遠位端に取り付けられるトランスデューサと、
    前記トランスデューサに接続され、該トランスデューサを用いて音響信号を生成し、かつ受け取るように構成された制御システムと、
    前記音響信号を入力信号として受け取り、前記入力信号を処理して該入力信号から1つ又は複数の音響的特徴を抽出するための、コンピュータ可読の指令を有するプリプロセッサと、
    前記1つ又は複数の抽出された音響的特徴を受け取るように構成されたプロセッサであって、コンピュータ可読の一群の規則を有し、前記規則を用いて前記の抽出された特徴を評価し、血管内の前記血管内器具の誘導又は血管内の前記血管内器具の位置に関する出力信号を生成するプロセッサと、
    前記プロセッサによって生成された前記出力信号の表示事項を表示するための出力装置とを備えていて、
    前記誘導又は位置に関連する出力信号は、複数の状態のうちの1つを含み、前記複数の状態は、それぞれ、予め設定された器具の移動又は位置についての一群の状態に関連することを特徴とする位置決めシステム。
  2. 該位置決めシステムが、前記制御システムに接続された、前記血管内器具に取り付けるための検出電極をさらに備えていて、
    前記制御システムは、前記検出電極から電気信号を受け取るように構成され、
    前記プリプロセッサは、前記の受け取った電気信号を処理して、前記電気信号に関連する1つ又は複数の特徴を抽出し、
    前記のコンピュータ可読の一群の規則が、1つ又は複数の電気的特徴を評価するための規則を含むことを特徴とする、請求項1に記載の位置決めシステム。
  3. 前記音響信号が非画像化超音波信号を含むことを特徴とする、請求項1又は2に記載の位置決めシステム。
  4. 前記プロセッサが、前記1つ又は複数の電気的特徴を評価して、血管の内部の前記血管内器具の誘導又は位置に関連する出力信号を確認することを特徴とする、請求項1〜3のいずれか1つに記載の位置決めシステム。
  5. 前記プロセッサが有する前記コンピュータ可読の一群の規則は、人工知能プログラムを含むことを特徴とする、請求項1〜のいずれか1つに記載の位置決めシステム。
  6. 前記プロセッサが有する前記コンピュータ可読の一群の規則は、推論規則、エキスパートシステム、ニューラルネットワーク及び論理のうちの少なくとも1つに基づいて、前記抽出された特徴を評価することを特徴とする、請求項1〜のいずれか1つに記載の位置決めシステム。
  7. 前記コンピュータ可読の一群の規則は、血管の内部の順行流れが、血管の内部の逆行流れよりも優勢であるか否かを評価するための規則をさらに含むことを特徴とする、請求項1〜のいずれか1つに記載の位置決めシステム。
  8. 前記コンピュータ可読の一群の規則は、血管の内部の逆行流れが、血管の内部の順行流れよりも支配的であるか否かを評価するための規則をさらに含むことを特徴とする、請求項1〜のいずれか1つに記載の位置決めシステム。
  9. 前記コンピュータ可読の一群の規則は、低周波数の信号が、血管の内部の順行流れ及び血管の内部の逆行流れの両方よりも支配的であるか否かを評価するための規則をさらに含むことを特徴とする、請求項1〜のいずれか1つに記載の位置決めシステム。
  10. 前記誘導又は位置に関連する出力信号は、望ましい方向へ移動している器具と、望ましくない方向へ移動している器具と、望ましい位置に位置決めされた器具とで構成されるグループの中から選択された最も可能性の高い状態の表示を含むことを特徴とする、請求項1〜のいずれか1つに記載の位置決めシステム。
  11. 前記電気の波は心電図であり、前記予め選択された部分は心電図の一部分であることを特徴とする、請求項1〜10のいずれか1つに記載の位置決めシステム。
  12. 前記電気信号に関連する前記1つ又は複数の特徴は、心電図のQRS群の一部分に対応することを特徴とする、請求項11のいずれか1つに記載の位置決めシステム。
  13. 前記電気信号に関連する前記1つ又は複数の特徴は、前記検出電極によって測定されたP波のマグニチュードと外部電極によって測定されたP波のマグニチュードの比に対応することを特徴とする、請求項12のいずれか1つに記載の位置決めシステム。
  14. 患者の血管系内における医療装置の位置を決定する方法であって、
    医療装置の遠位端から超音波信号を含む血管系内信号を送り出す送出過程と、
    反射された超音波信号を受け取る受取過程と、
    前記反射された超音波信号から超音波的特徴を抽出する抽出過程と、
    前記医療装置のリードから電気信号を受け取る受取過程と、
    前記受け取った電気信号からECG特徴を抽出する抽出過程と、
    前記抽出された特徴を用いて複数の表示スコアを計算する計算過程と、
    前記表示スコアを比較することにより位置の状態を特定する特定過程とを有することを特徴とする方法。
  15. 各特徴は、前記血管系内の明確な位置を示すことを特徴とする、請求項14に記載の方法。
  16. 前記計算過程は、前記抽出された特徴を、位置決めの可能性をあらわす複数の表示方程式に入力する過程を有することを特徴とする、請求項14又は15に記載の方法。
  17. 前記表示方程式は、メンバーシップ関数に対応することを特徴とする、請求項16に記載の方法。
  18. 前記表示方程式は、該表示方程式で用いられる前記抽出された特徴に関連する重みづけ因子を適用する過程を有することを特徴とする、請求項16に記載の方法。
  19. 前記特定過程は、最も高い表示スコアに対応する位置状態を選択する過程を有していることを特徴とする、請求項1418のいずれか1つに記載の方法。
  20. 前記計算過程は、抽出された特徴と、前記医療装置の特定の位置又は誘導の状態の可能性との間の相関関係に基づいて予め設定された方程式を解く過程を有していることを特徴とする、請求項1419のいずれか1つに記載の方法。
  21. 前記複数の表示スコアのうちの1つの表示スコアが、抽出された音響的特徴を、血管系内の流れと相対的な前記医療装置の移動の方向に関連づけることを特徴とする、請求項1420のいずれか1つに記載の方法。
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