JP2018514296A - 電気生理学的誘発電位の変化を測定し、表示し、および正確に検出するためのシステム、方法、およびコンピュータアルゴリズム - Google Patents
電気生理学的誘発電位の変化を測定し、表示し、および正確に検出するためのシステム、方法、およびコンピュータアルゴリズム Download PDFInfo
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Abstract
Description
体性感覚誘発電位は、通常、末梢神経を繰り返し刺激した後の頭部または頸部および末梢神経から記録された合計電位である。外科手術時に体性感覚誘発電位を使用して患者をモニタリングすることにより、切迫損傷、特に神経損傷の早期発見が可能になることが分かっている。
Claims (15)
- 患者の生理系に対する変化をモニタリングし、検出し、識別するための自動化された誘発電位解析装置であって、
患者の神経に対して刺激を加えた後、前記患者の生理系から電位データを得るための入力デバイスと、
前記電位データを受け取り、解析するためのコンピューティングシステムであって、
前記電位データに基づいて複数の誘発電位波形(EP)を生成し、
解析のスライディングウィンドウを利用して、前記生成されたEPの変化または傾向を測定し、
EPの全サブセットの間の波形の増加傾向の変化を表示し、
前記EPを生成する前記生理系に対する変化を表す、各サブセットに対する警報票決を判定する、
ように構成された処理回路を備えるコンピューティングシステムと、
を備えることを特徴とする装置。 - 請求項1に記載の装置であって、解析のスライディングウィンドウを用いて変化を測定するステップが、
前記複数のEPの第1のサブセットのアンサンブル平均波形(EA)を計算するステップと、
前記EAを表示するステップと、
前記複数のEPの第2のサブセットの第2のEAを計算するステップであって、前記第2のサブセットが、EPの前記第1のサブセットから少なくとも1つの初期EPを除去し、前記第1のサブセットの終了後から少なくとも1つの追加のEPを含み、および前記第1および第2のサブセットが、同じ数のEPを含み、複数のEAを生成するためのスライディングウィンドウを表す、計算するステップと、
EPの前記第1のサブセットと前記第2のサブセットとの間の増加傾向の変化を表示するために前記第2のEAを表示するステップとを含むことを特徴とする装置。 - 請求項1に記載の装置であって、EPのサブセットにおける取得したEP波形が、EPの前のサブセットと比較して待ち時間、振幅または形態の変化閾値に達した場合、正の警報票決(positive alert vote)が作成されることを特徴とする装置。
- 請求項1に記載の装置であって、前記装置が、外科手術環境における他のデバイスに統合されるようにさらに構成されることを特徴とする装置。
- 請求項1に記載の装置であって、前記コンピューティングシステムが、他のデバイスが手動でまたは自動的に生理的変化を改善し、または軽減し、続いて取得したEP波形を向上させることが可能になる前記外科手術環境におけるこれらのデバイスに情報を供給するようにさらに構成されることを特徴とする装置。
- 請求項5に記載の装置であって、手術台をさらに備え、前記手術台が、前記コンピューティングシステムからの前記情報に応答して、前記患者の位置の調整を生じさせることによって前記生理的変化を改善し、または軽減するように調整可能であるように構成されることを特徴とする装置。
- 請求項1に記載の装置であって、前記装置のコンピューティングシステムが、
麻酔または血圧マシンから情報を得、
EP波形の変化が麻酔または血圧変化によるときを判定するようにさらに構成されることを特徴とする装置。 - 末梢神経構造への潜在的損傷を自動的に識別する方法であって、
電気パルスを用いて末梢神経を刺激するステップと、
神経系によって生成された、結果として得られる電気波形(EP)を記録するステップであって、前記結果として得られるEPが、神経路にわたって配置された電極を通して収集される、記録するステップと、
前記取得したEPの変化を解析のスライディングウィンドウを利用して測定するステップと、
EPの全サブセットの間の波形の増加傾向の変化を表示するステップと、
前記EPの重複サブセットからの警報投票を利用して、使用者に前記変化への警報発信をするステップとを含むことを特徴とする方法。 - 請求項8に記載の方法であって、解析のスライディングウィンドウを利用して変化を測定するステップが、
前記複数のEPの第1のサブセットのアンサンブル平均波形(EA)を計算するステップと、
前記EAを表示するステップと、
前記複数のEPの第2のサブセットの第2のEAを計算するステップであって、前記第2のサブセットが、EPの前記第1のサブセットから少なくとも1つの初期EPを除去し、前記第1のサブセットの終了後から少なくとも1つの追加のEPを含み、および前記第1および第2のサブセットが、同じ数のEPを含み、複数のEAを生成するためのスライディングウィンドウを表す、計算するステップと、
EPの前記第1のサブセットと前記第2のサブセットとの間の増加傾向の変化を表示するために前記第2のEAを表示するステップとを含むことを特徴とする方法。 - 請求項9に記載の方法であって、前記第2のEA波形が、待ち時間、振幅または形態の変化閾値に達した場合、正の警報票決(positive alert vote)が作成されることを特徴とする方法。
- 請求項10に記載の方法であって、判定された数のEAの正の警報票決(positive alert vote)と負の警報票決(negative alert vote)との比が閾値を超えたとき、警報が作動されることを特徴とする方法。
- 請求項8に記載の方法であって、警報に関連した情報を自動化された手術台に渡すステップと、前記手術台の調整を通して患者の位置を再調整するステップをさらに含むことを特徴とする方法。
- 請求項9に記載の方法であって、前記手術台の調整が、自動的にまたは半自動的に実施されることを特徴とする方法。
- 請求項8に記載の方法であって、警報に関連した情報を他のデバイスまたはプロセスに渡すステップをさらに含むことを特徴とする方法。
- 請求項8に記載の方法であって、前記電極が、頸部または頭部に配置されることを特徴とする方法。
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US201562156874P | 2015-05-04 | 2015-05-04 | |
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PCT/US2016/030605 WO2016179191A1 (en) | 2015-05-04 | 2016-05-03 | System, method, and computer algorithm for measuring, displaying, and accurately detecting changes in electrophysiological evoked potentials |
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