JP7058979B2 - スイッチングノイズを軽減する制御方法及び装置 - Google Patents
スイッチングノイズを軽減する制御方法及び装置 Download PDFInfo
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Description
本特許文献の開示の一部には、著作権保護の対象となる資料が含まれる。著作権者は、特許文献又は特許情報開示のうちの任意のものによる複製に対して、それが特許商標庁特許出願又は記録において明らかであるとき、異議を唱えないが、そうでなければ、たとえ何であっても全ての著作権を保有する。
本明細書で使用される特定の頭字語及び略語の意味を表1に示す。
ここで、図面を参照し、開示される本発明の一実施形態により構成され動作する、生存被験者の心臓12に対して処置を行うための例示的なシステム10の描図である図1を最初に参照する。このシステムは、患者の脈管系を通って心臓12の腔又は脈管構造内に操作者16によって経皮挿入されるカテーテル14を備えている。通常は医師である操作者16が、カテーテルの遠位先端18を、心臓壁、例えば、アブレーション標的部位と接触させる。その開示が参照により本明細書に援用される、米国特許第6,226,542号及び同第6,301,496号、並びに本願と同一譲受人に譲渡された米国特許第6,892,091号に開示される方法に従って、電気的活動マップが作成され得る。本発明の原理は、システム10などのシステムに制限されるものではなく、生体電気信号が複数チャンネル経由で受信される他のシステムに適用されてもよいことを理解されたい。
(1) 方法であって、
複数のアナログ生体電気信号を対応のチャンネルで受信するステップと、
前記生体電気信号を対応の選択イベントで多重化するステップであって、前記選択イベントが、基準電圧と第1の接続を確立することと、その後に前記第1の接続を切断し、前記生体電気信号の1つと第2の接続を確立することと、を含む、ステップと、
前記多重化された生体電気信号をアナログ・デジタル変換器に出力するステップと、を含む、方法。
(2) 第1の接続を確立すること及び第2の接続を確立することは、2極双投スイッチを第1の位置及び第2の位置にそれぞれ配置することによって達成される、実施態様1に記載の方法。
(3) ウィルソン結合電極を差動増幅器の第1の入力に接続することと、前記生体電気信号の1つを前記差動増幅器の第2の入力に接続することと、前記差動増幅器の第1及び第2の出力を前記2極双投スイッチに連係することと、を更に含む、実施態様2に記載の方法。
(4) 前記差動増幅器と前記2極双投スイッチとの間にバッファを介在させることを更に含む、実施態様3に記載の方法。
(5) 装置であって、
細長い遠位部分を有するカテーテルと、
生体電気信号を読み取るための前記遠位部分上の複数の電極と、
前記電極のそれぞれに接続される複数の入力を有し、かつ、出力を有するマルチプレクサーと、
基準信号に接続される第1の入力端子と、前記マルチプレクサーの前記出力に連係される第2の入力端子と、出力端子と、を有するスイッチと、
前記スイッチ及び前記マルチプレクサーに連係され、かつ、前記スイッチの前記第1の入力端子を介して前記スイッチの前記出力端子と前記基準信号との間に第1の接続を確立するように、その後、前記第1の接続を切断するように、そして前記スイッチの前記第2の入力端子を介して前記スイッチの前記出力端子と前記マルチプレクサーの前記出力との間に第2の接続を確立するように動作する制御回路と、を備える、装置。
(7) 前記スイッチは2極双投スイッチである、実施態様5に記載の装置。
(8) 第1及び第2の入力を有し、かつ、前記スイッチの前記第1及び第2の入力端子にそれぞれ接続される第1及び第2の出力を有する差動増幅器を前記制御回路が備え、前記差動増幅器の前記第1の入力がウィルソン結合電極に接続され、前記差動増幅器の前記第2の入力が前記生体電気信号の1つに連係されている、実施態様5に記載の装置。
(9) 前記ウィルソン結合電極は動的オフセット電圧に接続されている、実施態様8に記載の装置。
Claims (7)
- 基準信号を入力するウィルソン結合電極が差動増幅器の第1の入力に接続され、複数のアナログ生体電気信号に対応するチャンネルの何れかが選択的に前記差動増幅器の第2の入力に接続可能に構成され、前記差動増幅器の出力に基づく信号のアナログ・デジタル変換器への入力をスイッチングする2極双投スイッチを備える装置によって実行される制御方法であって、
前記複数のアナログ生体電気信号を対応の前記チャンネルで受信するステップと、
前記生体電気信号を対応の選択イベントで多重化するステップであって、前記選択イベントが、基準電圧と第1の接続を確立することと、その後に前記第1の接続を切断し、前記生体電気信号の1つと第2の接続を確立することと、を含む、ステップと、
前記多重化された生体電気信号を前記アナログ・デジタル変換器に出力するステップと、を含み、
前記チャンネルの1つを前記差動増幅器の第2の入力に接続することと、前記差動増幅器の第1及び第2の出力を前記2極双投スイッチに連係することと、を含む、ステップと、を更に含む、制御方法。 - 第1の接続を確立すること及び第2の接続を確立することは、前記2極双投スイッチを第1の位置及び第2の位置にそれぞれ配置することによって達成される、請求項1に記載の制御方法。
- 前記差動増幅器と前記2極双投スイッチとの間にバッファを介在させることを更に含む、請求項1に記載の制御方法。
- 装置であって、
細長い遠位部分を有するカテーテルと、
生体電気信号を読み取るための前記遠位部分上の複数の電極と、
前記電極のそれぞれに接続される複数の入力を有し、かつ、出力を有するマルチプレクサーと、
基準信号に接続される第1の入力端子と、前記マルチプレクサーの前記出力に連係される第2の入力端子と、出力端子と、を有するスイッチと、
前記スイッチ及び前記マルチプレクサーに連係され、かつ、前記スイッチの前記第1の入力端子を介して前記スイッチの前記出力端子と前記基準信号との間に第1の接続を確立するように、その後、前記第1の接続を切断するように、そして前記スイッチの前記第2の入力端子を介して前記スイッチの前記出力端子と前記マルチプレクサーの前記出力との間に第2の接続を確立するように動作する制御回路と、を備え、
第1及び第2の入力を有し、かつ、前記スイッチの前記第1及び第2の入力端子にそれぞれ接続される第1及び第2の出力を有する差動増幅器を前記制御回路が備え、前記差動増幅器の前記第1の入力がウィルソン結合電極に接続され、前記差動増幅器の前記第2の入力が前記生体電気信号の1つに連係されている、装置。 - 前記生体電気信号はアナログ信号であり、前記スイッチの前記出力端子に接続され、かつ、プロセッサに連係されるアナログ・デジタル変換器を更に備える、請求項4に記載の装置。
- 前記スイッチは2極双投スイッチである、請求項4に記載の装置。
- 前記ウィルソン結合電極は動的オフセット電圧に接続されている、請求項4に記載の装置。
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US15/350,236 | 2016-11-14 | ||
US15/350,236 US10314507B2 (en) | 2016-11-14 | 2016-11-14 | ASIC with switching noise reduction |
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JP7058979B2 true JP7058979B2 (ja) | 2022-04-25 |
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EP (2) | EP3320838B1 (ja) |
JP (1) | JP7058979B2 (ja) |
CN (1) | CN108065931B (ja) |
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IL (1) | IL255110B (ja) |
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CN108065931B (zh) | 2022-07-05 |
EP3320838B1 (en) | 2020-03-25 |
EP3320838A1 (en) | 2018-05-16 |
US10863914B2 (en) | 2020-12-15 |
US20180132749A1 (en) | 2018-05-17 |
US10314507B2 (en) | 2019-06-11 |
EP3607880B1 (en) | 2022-01-26 |
EP3607880A1 (en) | 2020-02-12 |
AU2017245378A1 (en) | 2018-05-31 |
CN108065931A (zh) | 2018-05-25 |
JP2018079322A (ja) | 2018-05-24 |
US20190246935A1 (en) | 2019-08-15 |
IL255110B (en) | 2020-10-29 |
IL255110A0 (en) | 2017-12-31 |
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