JP2022506208A - 生体インピーダンス体組成測定のためのシステムおよび方法 - Google Patents
生体インピーダンス体組成測定のためのシステムおよび方法 Download PDFInfo
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Abstract
Description
本出願は、2018年11月5日に出願された米国仮特許出願第62/755,650号の優先権の利益を主張するものであり、その内容は参照により全体が本明細書に組み込まれる。
本発明は、そのいくつかの実施形態において、体組成測定に関するものであり、より具体的には、排他的ではないが、インピーダンス測定を用いた体組成測定のシステムおよび方法に関するものである。
・ ECW - 細胞外液(extra cellular water)、低周波の主要導体を形成する。
・ ICW - 細胞内液(intra cellular water)、高周波で導電性である。
・ TBW - 総水分量、身体の水分補給状態を示す。
・ FFM - 除脂肪体重。
・ %body fat - 患者の肥満状態の指標。
Claims (34)
- 患者の少なくとも1つの身体セグメントにおける体組成を測定するシステムであって、
それぞれが前記患者の身体に接触するための複数の電極を含む複数の接触構成要素であって、各接触構成要素はそれぞれの固有のアドレスに関連付けられており、前記複数の接触構成要素は、前記患者の身体の異なる位置に独立して間隔を空けて配置可能である、複数の接触構成要素と、
少なくとも1つのマルチコンダクタバスバーであって、各マルチコンダクタバスバーが少なくとも2つの前記接触構成要素の電極に接続される、少なくとも1つのマルチコンダクタバスバーと、
それぞれの固有のアドレスを使用して、共通のマルチコンダクタバスバーによって接続された接触構成要素の第1の組を選択し、前記接触構成要素の第1の組の間に位置する第1の身体セグメントのインピーダンスを示す少なくとも1つのインピーダンス測定値を取得し、前記第1の身体セグメントの体組成の推定のために、前記少なくとも1つのインピーダンス測定値を提供する、コントローラと、
を備える、システム。 - 前記コントローラによって出力されるアドレス指定命令は、対応する電極の電流キャリアまたは電圧センサとしての動作を定義し、および/または、前記構成要素の動作タイプを割り当てる、請求項1に記載のシステム。
- 体組成の前記推定は、筋肉量の推定を備える、請求項1に記載のシステム。
- 前記複数の接触構成要素のそれぞれの接触構成要素は、前記それぞれの接触構成要素の長軸に沿って配置された3つの電極を含み、前記コントローラは、前記第1の組の各接触構成要素の中間電極を電流の伝送のために動作させ、前記第1の組の各接触構成要素の内側対向電極を電圧測定のために動作させる、請求項1に記載のシステム。
- 前記複数の接触構成要素と前記マルチコンダクタバスバーは、アドレスが割り当てを組み込む単一のフレキシブルストリップに統合される、請求項1に記載のシステム。
- 単一の主マルチコンダクタバスバーが、前記コントローラと前記複数の接触構成要素の各1つとの間を接続する、請求項1に記載のシステム。
- 前記複数の電極のそれぞれは、それぞれ固有のアドレスを有するそれぞれの電極構成要素に関連付けられており、前記コントローラは、各電極構成要素をアドレス指定することによって、異なる接触構成要素のそれぞれの電極構成要素の一組の電極を選択する、請求項1に記載のシステム。
- 少なくともいくつかの電極が、身体の一部に装着されるように設計されたスリーブに取り付けられており、前記スリーブは、膨張するように設計された内腔を有する二重壁を有し、前記スリーブは、マルチコンダクタバスバーを介して前記コントローラに接続されており、使用される際、前記電極と前記身体の一部との間で実質的に等しい接触圧力を誘導するように前記スリーブが膨張し、前記身体の一部に装着されたスリーブに埋め込まれた複数の検出ストリップおよび/またはセンサからデータを収集することによって、3Dマップが形成される、請求項1に記載のシステム。
- 多電極ストリップが接着剤によって身体の一部に装着され、前記身体の一部の筋肉量を示す3Dインピーダンスマッピングおよび/またはモデリングのための出力が得られる、請求項1に記載のシステム。
- 前記コントローラが、共通のマルチコンダクタバスバーによって接続された前記複数の接触構成要素のうち、接触構成要素の第2の組を繰り返し選択し、前記接触構成要素の第2の組の電極を用いてインピーダンスを測定することにより、少なくとも1つのインピーダンス測定値を収集し、前記少なくとも1つのインピーダンス測定値は、前記接触構成要素の第2の組の間に位置する第2の身体セグメントのインピーダンスを示し、前記少なくとも1つのインピーダンス測定値を、前記第2の身体セグメントの筋肉量および/または無脂肪量を含む体組成の推定のために提供する、請求項1に記載のシステム。
- 前記接触構成要素の第1の組の少なくとも1つの接触構成要素が前記接触構成要素の第2の組の間に配置され、前記接触構成要素の第1の組および前記接触構成要素の第2の組が前記共通のマルチコンダクタバスバーに接続される、請求項10に記載のシステム。
- 前記接触構成要素の第1の組の前記少なくとも1つの接触構成要素が前記接触構成要素の第2の組の間に配置され、前記接触構成要素の第2の組の間に配置されたそれぞれの身体セグメントに対して実行される前記少なくとも1つのインピーダンス測定の間、対応する電極が選択されず動作しない、請求項11に記載のシステム。
- 前記接触構成要素の第2の組の1つが前記接触構成要素の第1の組から選択される、請求項10に記載のシステム。
- それぞれが固有のアドレスに関連付けられた複数の生体センサをさらに備え、前記複数の生体センサは、複数の電極に接続される少なくとも1つのマルチコンダクタバスバーに接続され、前記コントローラは、前記少なくとも1つのマルチコンダクタバスバー上で特定の固有のアドレスを送信することによって、前記複数の生体センサおよび前記複数の電極を動作させる、請求項1に記載のシステム。
- 前記複数の生体センサは、圧力センサ、温度センサ、パルスセンサ、音センサ、および皮膚コンダクタンスセンサからなる群から選択される、請求項14に記載のシステム。
- 前記接触構成要素の第1の組および第2の組の各接触構成要素は、長軸に沿って配置された3つの電極を含み、前記コントローラは、前記接触構成要素の第1の組および第2の組の各接触構成要素の中間電極を使用して電流を注入し受信し、前記コントローラは、前記接触構成要素の第1の組および第2の組の内側対向電極を使用して電圧を測定する、請求項10に記載のシステム。
- 前記患者の身体の内腔に挿入するための体内管をさらに備え、前記体内管は、それぞれが前記患者の身体の内面に接触するための複数の電極を含む少なくとも1つの接触構成要素であって、それぞれが固有のアドレスに関連付けられた、少なくとも1つの接触構成要素に結合され、少なくとも1つのマルチコンダクタバスバーが、前記体内管の前記少なくとも1つの接触構成要素と前記患者の身体の外側に配置された少なくとも1つの接触構成要素とに接続され、前記接触構成要素の第1の組は、前記体内管の前記少なくとも1つの接触構成要素と前記患者の身体の外側に配置された1つの接触構成要素とを含み、前記電極の少なくともいくつかは、アドレス指定スキームを介さずに前記コントローラに個別に直接接続される、請求項1に記載のシステム。
- 前記体内管は、気管内管(ETT)、給餌管、および鼻胃管(NG)からなるグループから選択される、請求項17に記載のシステム。
- 前記接触構成要素の第1の組の電極によって実行される少なくとも1つのインピーダンス測定値が、少なくとも1つの肺の体組成を示す、請求項17に記載のシステム。
- 前記コントローラは、前記接触構成要素の第1の組および第2の組を反復的に切り替えて、前記第1の身体セグメントに対する時間間隔に亘って第1の複数のインピーダンス測定値を監視し、前記第2の身体セグメントに対する時間間隔に亘って第2の複数のインピーダンス測定値を監視する、請求項10に記載のシステム。
- リアルタイムの第1および第2の複数のインピーダンス測定値に基づいて、第1および第2の身体セグメントの体組成を、グラフィカルユーザインタフェース(GUI)内で表示し、動的に更新するためのコードを実行するプロセッサをさらに備える、請求項20に記載のシステム。
- 前記プロセッサは、前記第1および第2の身体セグメントの位置を示す身体マップに対応する第1および第2の身体セグメントの無脂肪量(FFM)、筋肉量および/または水分補給状態を含む体組成を表示するためのコードを実行する、請求項21に記載のシステム。
- 前記GUIは、前記第1および第2の身体セグメントの体組成を、異なる体組成の範囲に沿った指標として表示する、請求項21に記載のシステム。
- 前記第1および第2の複数のインピーダンス測定値を分析して、前記第1および第2の身体セグメントの少なくとも1つの14におけるような体組成がいつ臨床的に重要な目標に達するかを予測し、予測を示す警告を生成することをさらに備える、請求項20に記載のシステム。
- メモリに格納され、身体部分のセンサから得られる筋肉量の減少と食物摂取量を組み合わせた、人工知能(AI)モデルを介した複合相関分析を形成するために実行可能なコードをさらに備え、分析結果は、筋肉量および/または所望の水分補給状態を維持または回復するために、患者の給餌ポンプ/栄養成分を最適に管理するために使用される、請求項1に記載のシステム。
- 臨床的に重要な目標は、脱水、体液過多、およびFFMからなる群から選択される、請求項24に記載のシステム。
- 前記体組成が、脂肪含有量、浮腫、水分含有量、電解質含有量、および病理学的状態からなる群から選択される、請求項1に記載のシステム。
- 前記接触構成要素の第1の組および第2の組の各1つに対して、前記コントローラは、複数の異なる周波数でインピーダンスを測定し、前記複数の異なる周波数および請求項8に記載のセンサによって収集されたデータに基づいて、線形勾配測定を使用して前記第1および第2の身体セグメントの3Dマップを生成および表示するためのコードを実行するプロセッサをさらに備える、請求項20に記載のシステム。
- 体組成の推定は、複数の身体セグメントの身体セグメントごとの筋肉の変化量を含み、前記コントローラは、筋肉量の変化と前記患者に投与するための脂質、炭水化物、タンパク質、および/または脂肪の量とを相関させた相関データセットに基づいて、それぞれの身体セグメントごとの脂質、炭水化物、タンパク質、および/または脂肪の量を計算し、複数の身体セグメントのそれぞれに対する脂質、炭水化物、タンパク質、および/または脂肪の量の総和に従って、前記患者に給餌する給餌ポンプによって実施するための命令を生成する、請求項1に記載のシステム。
- 患者の少なくとも1つの身体セグメントにおける体組成を測定する方法であって、
共通のマルチコンダクタバスバーによって接続された複数の接触構成要素のうちの接触構成要素の第1の組を、固有のアドレスを示す命令を送信することによって選出することと、共通のマルチコンダクタバスバー上の対応する接触構成要素の第1の組の電流および/または検出要素として割り当てることであって、各接触構成要素は、前記患者の身体に接触するための複数の電極を含み、各接触構成要素は、それぞれの固有のアドレスに関連付けられており、前記複数の接触構成要素は、前記患者の身体上の異なる位置に間隔を空けて独立して配置可能である、割り当てることと、
前記接触構成要素の第1の組の電極を使用して、少なくとも1つのインピーダンス測定値を取得することであって、前記少なくとも1つのインピーダンス測定が、前記接触構成要素の第1の組の間に位置する第1の身体セグメントのインピーダンスを示す、取得することと、
前記第1の身体セグメントの体組成を推定するために、前記少なくとも1つのインピーダンス測定値を提供することと、
を備える、方法。 - 接続されたマルチコンダクタバスバーに接続された少なくとも1つの他の生体センサから出力を得ることと、インピーダンス測定値を前記少なくとも1つの他の生体センサの前記出力と組み合わせて表示することとをさらに備える、請求項30に記載の方法。
- 請求項30および/または31におけるように収集されたデータによって、検査される身体部分の3Dモデリングが可能となる、請求項30に記載の方法。
- 体組成の前記推定を含む患者の状態情報を組み込んだGUIを提供することをさらに備える、請求項30に記載の方法。
- 体組成の前記推定は、筋肉量および/または水分補給状態を含む、請求項30に記載の方法。
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