JP2022531297A - 特徴描写および機械学習による不整脈検出 - Google Patents
特徴描写および機械学習による不整脈検出 Download PDFInfo
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Abstract
Description
Claims (13)
- コンピューティングデバイスであって、
記憶媒体と、
処理回路であって、前記記憶媒体に動作可能に結合されており、かつ
医療デバイスによって感知された患者の心臓電位図データを受信することと、
複数の患者の心臓電位図データを使用してトレーニングされた機械学習モデルを、前記受信された心臓電位図データに適用して、前記機械学習モデルに基づいて、不整脈のエピソードが前記患者において発生したことを判定することと、
前記受信された心臓電位図データの特徴ベースの描写を実行して、前記心臓電位図データに存在する心臓特徴を取得することと、
前記不整脈のエピソードが前記患者において発生したことを判定することに応じて、
前記不整脈のエピソードが前記患者において発生したという指標と、前記不整脈のエピソードと一致する前記心臓特徴のうちの1つ以上と、を含む、レポートを生成することと、
前記不整脈のエピソードが前記患者において発生したという前記指標と、前記不整脈のエピソードと一致する前記心臓特徴のうちの1つ以上と、を含む、前記レポートを、表示のために、出力することと、を行うように構成されている、処理回路と、を備える、コンピューティングデバイス。 - 前記心臓電位図データの特徴ベースの描写を実行して、前記心臓電位図データに存在する前記心臓特徴を取得するために、前記処理回路が、QRS検出、難治性処理、ノイズ処理、または前記心臓電位図データの描写のうちの少なくとも1つを実行して、前記心臓電位図データに存在する心臓特徴を取得するように構成されている、請求項1に記載のコンピューティングデバイス。
- 前記機械学習モデルを適用して、前記不整脈のエピソードが前記患者において発生したことを判定するために、前記処理回路が、前記機械学習モデルを適用して、徐脈、頻脈、心房細動、心室細動、または房室ブロックのうちの少なくとも1つのエピソードが前記患者において発生したことを判定するように構成されている、請求項1~2に記載のコンピューティングデバイス。
- 前記心臓電位図データに存在する前記心臓特徴が、前記患者の平均心拍数、前記患者の最小心拍数、前記患者の最大心拍数、前記患者の心臓のPR間隔、前記患者の心拍数の変動性、前記患者の心電図(ECG)の1つ以上の特徴の1つ以上の振幅、または前記患者の前記ECGの前記1つ以上の特徴の間の間隔のうちの1つ以上である、請求項1~3のいずれかに記載のコンピューティングデバイス。
- 前記複数の患者の心臓電位図データを使用してトレーニングされた前記機械学習モデルが、複数の心電図(ECG)波形を使用してトレーニングされた機械学習モデルを含み、各ECG波形が前記複数の患者のうちのある患者における1つ以上のタイプの不整脈の1つ以上のエピソードで標識されている、請求項1~4のいずれかに記載のコンピューティングデバイス。
- 前記機械学習モデルを前記受信された心臓電位図データに適用するために、前記処理回路が、前記機械学習モデルを、
前記患者における不整脈に相関される、前記受信された心臓電位図データのうちの1つ以上の特性、
前記医療デバイスの活動レベル、
前記医療デバイスの入力インピーダンス、または
前記医療デバイスの電池レベル、のうちの少なくとも1つに適用するように構成される、請求項1~5のいずれかに記載のコンピューティングデバイス。 - 前記不整脈のエピソードが前記患者において発生したという前記指標と、前記不整脈のエピソードと一致する前記心臓特徴のうちの前記1つ以上と、を含む、前記レポートを出力するために、前記処理回路が、
ユーザから、前記心臓電位図データの前記特徴ベースの描写に対する調整を受信することと、
前記調整に従って、前記心臓電位図データの特徴ベースの描写を実行して、前記心臓電位図データに存在する第2の心臓特徴を取得することと、を行うように構成されている、請求項1~6のいずれかに記載のコンピューティングデバイス。 - 前記患者の前記心臓電位図データが、前記患者の心電図(ECG)を含み、
前記不整脈のエピソードが前記患者において発生したという前記指標と、前記不整脈のエピソードと一致する前記心臓特徴のうちの前記1つ以上と、を含む、前記レポートを生成するために、前記処理回路が、
前記患者の前記ECGのサブセクションを識別することであって、前記サブセクションが、前記不整脈のエピソード前の第1の期間、前記不整脈のエピソード中の第2の期間、および前記不整脈のエピソード後の第3の期間についてのECGデータを含み、前記患者の前記ECGの時間の長さが、前記第1、第2、および第3の期間よりも長い、識別することと、
前記第1、第2、および第3の期間と一致する前記心臓特徴のうちの1つ以上を識別することと、
前記レポートにおいて、前記ECGの前記サブセクションと、前記第1、第2、および第3の期間と一致する前記心臓特徴のうちの前記1つ以上と、を含むことと、を行うように構成されている、請求項1~7のいずれかに記載のコンピューティングデバイス。 - 前記処理回路が、前記受信された心臓電位図データを処理して、前記受信された心臓電位図データの中間表現を生成することを行うようにさらに構成されており、
前記複数の患者の心臓電位図データを使用してトレーニングされた前記機械学習モデルを、前記受信された心臓電位図データに適用して、前記不整脈のエピソードが前記患者において発生したことを判定するために、前記処理回路が、複数の患者の心臓電位図データの中間表現を使用してトレーニングされた機械学習モデルを、前記受信された心臓電位図データの前記中間表現と前記心臓電位図データに存在する前記心臓特徴とに適用して、前記機械学習モデルに基づいて、前記不整脈のエピソードが前記患者において発生したことを判定することを行うように構成されている、請求項1~8のいずれかに記載のコンピューティングデバイス。 - 前記受信された心臓電位図データを処理して、前記受信された心臓電位図データの前記中間表現を生成するために、前記処理回路が、
前記受信された心臓電位図データにフィルタリングを適用することと、
前記受信された心臓電位図データに対して信号分解を実行することとのうちの少なくとも1つ、を実行するように構成されている、請求項9に記載のコンピューティングデバイス。 - 前記受信された心臓電位図データに信号分解を実行するために、前記処理回路が、前記受信された心臓電位図データにウェーブレット分解を実行するように構成されている、請求項10に記載のコンピューティングデバイス。
- コンピューティングデバイスであって、
医療デバイスによって感知された患者の心臓電位図データを受信するための手段と、
複数の患者の心臓電位図データを使用してトレーニングされた機械学習モデルを、前記受信された心臓電位図データに適用して、前記機械学習モデルに基づいて、前記不整脈のエピソードが前記患者において発生したことを判定するための手段と、
前記受信された心臓電位図データの特徴ベースの描写を実行して、前記心臓電位図データに存在する心臓特徴を取得するための手段と、
前記不整脈のエピソードが前記患者において発生したことを判定することに応じて、
前記不整脈のエピソードが前記患者において発生したという指標と、前記不整脈のエピソードと一致する前記心臓特徴のうちの1つ以上と、を含む、レポートを生成することと、
前記不整脈のエピソードが前記患者において発生したという前記指標と、前記不整脈のエピソードと一致する前記心臓特徴のうちの1つ以上と、を含む、前記レポートを、表示のために、出力することと、を行う手段とを備える、コンピューティングデバイス。 - 請求項1~12のいずれかに記載の前記コンピューティングデバイスを備えるシステム。
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