JP7344231B2 - 電気刺激療法のecapによる制御 - Google Patents
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- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
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- A61N1/3605—Implantable neurostimulators for stimulating central or peripheral nerve system
- A61N1/36128—Control systems
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- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
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- A61N1/36128—Control systems
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Description
Claims (13)
- システムであって、
刺激生成回路(211)であって、
制御刺激パルスを患者に送達することであって、前記制御刺激パルスが、第1のパルス幅を有する、送達することと、
治療パラメータ値に従って、複数の通知刺激パルスを送達することであって、前記複数の通知刺激パルスのそれぞれが、前記第1のパルス幅よりも長い第2のパルス幅を有する、送達することと、
を行うように構成されている、刺激生成回路(211)と、
誘発複合活動電位(ECAP:evoked compound action potential)信号を感知する感知回路(212)と、
処理回路(214)であって、
前記感知回路(212)で感知された誘発複合活動電位(ECAP)信号を受信することと、
前記誘発複合活動電位(ECAP)信号の特性を特定することと、
前記誘発複合活動電位(ECAP)信号が前記制御刺激パルスによって誘発された(elicited by)ものであるとき、前記誘発複合活動電位(ECAP)信号の特性とゲイン値とに基づいて、前記通知刺激パルスを少なくとも部分的に定義する(defines)前記治療パラメータ値を判定することと、
を行うように構成されている、処理回路(214)と、
を含む、システムにおいて、
前記誘発複合活動電位(ECAP)信号の特性が、
A) 電圧振幅、
または、
B-i) 信号の一部分の振幅、
B-ii) 1つ以上のピークの下の領域、
B-iii) 周波数成分、
B-iv) 最大および/または最小ピークタイミング
のうちのいずれか、または、それらの組み合わせ、
を含む、
システム。 - 前記ゲイン値が、それぞれの較正刺激パルスから誘発された誘発複合活動電位(ECAP)信号の特性の値の、前記較正刺激パルスの振幅に対する成長曲線の傾斜を表し、前記較正刺激パルスが、前記患者に送達され、刺激パラメータの異なる値によって少なくとも部分的に定義される、請求項1に記載のシステム。
- 前記誘発複合活動電位(ECAP)信号の特性が、前記誘発複合活動電位(ECAP)信号の一部分の測定振幅であり、前記治療パラメータ値が、新しい通知振幅値を含み、前記処理回路が、前記新しい通知振幅値を判定することを、
前記患者の誘発複合活動電位(ECAP)信号の目標振幅値から測定振幅を減算して、差分振幅を生成することと、
前記差分振幅に前記ゲイン値を乗算して、予備差分値を生成することと、
通知差分値を生成するために前記予備差分値にスケーリング係数を乗算することであって、前記スケーリング係数が、前記制御刺激パルスの前に送達された以前の通知刺激パルスを定義する以前の通知振幅値と、前記制御刺激パルスを定義する制御振幅値との比を表す、乗算することと、
前記通知差分値を前記以前の通知振幅値に加算して、前記通知刺激パルスを少なくとも部分的に定義する前記新しい通知振幅値を生成することと、
前記通知刺激パルスが、第1の通知刺激パルスであり、前記処理回路が、前記刺激生成回路を制御して、前記第1の通知刺激パルスの送達後に、前記新しい通知振幅値によって少なくとも部分的に定義される第2の通知刺激パルスを送達する、
ように構成されている、
請求項1または2に記載のシステム。 - 前記制御刺激パルスが、第1の制御刺激パルスであり、前記処理回路が、前記第1の制御刺激パルスを定義する以前の制御振幅値に前記予備差分値を加算することにより、第2の制御刺激パルスを定義する新しい制御振幅値を生成するように構成されており、前記第2の制御刺激パルスが、前記第1の制御刺激パルスの送達に続いて前記患者に送達される、請求項3に記載のシステム。
- 前記誘発複合活動電位(ECAP)信号の前記一部分の前記測定振幅が、前記誘発複合活動電位(ECAP)信号のN1ピークとP2ピークとの間の電圧振幅を含む、請求項3または4に記載のシステム。
- 前記処理回路が、前記誘発複合活動電位(ECAP)信号の前記特性と前記ゲイン値とに基づいて、前記通知
刺激パルスを少なくとも部分的に定義する前記治療パラメータ値を判定することを、
複数の連続して感知された誘発複合活動電位(ECAP)信号の前記特性の平均値と前記ゲイン値とに基づいて、前記通知刺激パルスを少なくとも部分的に定義する前記治療パラメータ値を判定することによって、行うように構成されている、請求項1~5のいずれか一項に記載のシステム。 - 複数の制御刺激パルスが、前記制御刺激パルスを含み、複数の通知刺激パルスが、前記通知刺激パルスを含み、前記処理回路が、前記刺激生成回路を制御して、前記複数の制御刺激パルスを前記複数の通知刺激パルスのうちの少なくともいくつかとインターリーブさせるように構成されている、請求項1~6のいずれか一項に記載のシステム。
- 前記処理回路が、前記刺激生成回路を制御して、前記複数の通知刺激パルスのうちの少なくともいくつかの中で前記複数の制御刺激パルスをインターリーブさせることを、
前記刺激生成回路を制御して、連続する通知刺激パルスの間で前記複数の制御刺激パルスのうちの少なくとも2つの制御刺激パルスを送達することと、
感知回路を制御して、前記連続する通知刺激パルスの間で、前記少なくとも2つの制御刺激パルスのそれぞれの制御刺激パルスによって誘発された少なくとも2つの誘発複合活動電位(ECAP)信号を感知することと、によって、行うように構成されている、請求項1~7のいずれか一項に記載のシステム。 - 前記通知刺激パルスのパルス幅が、300マイクロ秒超であり、1000マイクロ秒未満である、請求項1~8のいずれか一項に記載のシステム。
- 前記制御刺激パルスのパルス幅が、300マイクロ秒未満である、請求項1~9のいずれかの組み合わせに記載のシステム。
- 前記通知刺激パルスが、受動的な再充電相が後に続く単相(monophasic)パルスであり、前記制御刺激パルスが、正相および負相を含む二相パルスである、請求項1~10のいずれか一項に記載のシステム。
- 前記通知刺激パルスが、第1の正相および第1の負相を含む第1の二相パルスであり、前記制御刺激パルスが、第2の正相および第2の負相を含む第2の二相パルスである、請求項1~10のいずれか一項に記載のシステム。
- 前記複数の制御刺激パルスが、複数の非治療(non-therapeutic)パルスを含み、前記複数の通知刺激パルスが、複数の治療パルスを含む、請求項1~12のいずれかの組み合わせに記載のシステム。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201862688223P | 2018-06-21 | 2018-06-21 | |
| US62/688,223 | 2018-06-21 | ||
| PCT/US2019/038579 WO2019246582A1 (en) | 2018-06-21 | 2019-06-21 | Ecap based control of electrical stimulation therapy |
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|---|---|
| JP2021529570A JP2021529570A (ja) | 2021-11-04 |
| JP7344231B2 true JP7344231B2 (ja) | 2023-09-13 |
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|---|---|
| US (3) | US11129991B2 (ja) |
| EP (1) | EP3810261A1 (ja) |
| JP (1) | JP7344231B2 (ja) |
| CN (1) | CN112351813B (ja) |
| AU (3) | AU2019288752C1 (ja) |
| WO (1) | WO2019246582A1 (ja) |
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| US20240350810A1 (en) | 2024-10-24 |
| JP2021529570A (ja) | 2021-11-04 |
| WO2019246582A1 (en) | 2019-12-26 |
| AU2024227459B2 (en) | 2025-09-25 |
| AU2019288752B2 (en) | 2024-07-25 |
| US11129991B2 (en) | 2021-09-28 |
| CN112351813A (zh) | 2021-02-09 |
| AU2019288752A1 (en) | 2021-02-18 |
| US20220008731A1 (en) | 2022-01-13 |
| US20190388695A1 (en) | 2019-12-26 |
| AU2025287288A1 (en) | 2026-01-22 |
| CN112351813B (zh) | 2024-12-17 |
| AU2019288752C1 (en) | 2024-10-24 |
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