JP2018126518A - 酸素飽和度測定方法 - Google Patents
酸素飽和度測定方法 Download PDFInfo
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- JP2018126518A JP2018126518A JP2018029406A JP2018029406A JP2018126518A JP 2018126518 A JP2018126518 A JP 2018126518A JP 2018029406 A JP2018029406 A JP 2018029406A JP 2018029406 A JP2018029406 A JP 2018029406A JP 2018126518 A JP2018126518 A JP 2018126518A
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Abstract
Description
本出願は、2013年3月15日に出願された米国正規特許出願第13/837,748号に対する優先権の利益を主張するPCT国際出願であり、前記米国正規特許出願は、2012年10月7日に出願された米国仮特許出願第61/710,768号に対する優先権の利益を主張しており、本PCT国際出願も、前記米国仮特許出願に対する優先権の利益を主張しており、前記米国正規特許出願および前記米国仮特許出願のいずれについても、それら出願の全体的な内容、教示および示唆は、この引用により、あたかもそのことが完全にこの出願書類に記載されているかのように、この出願書類に合体される。
1.データ獲得、すなわち、デバイスからデータ・ファイルのローディング、
2.データ・フォーマティング(formatting、データの形式変換)、すなわち、生データの形式を業界標準のファイル形式(例えば、ECG(xml)、DICOMまたはSCP−ECGのいずれであるかを問わない)に変換する処理(注目されたいことは、そのようなデータ・フォーマティングは、データの獲得、保存または解析の一部として行われる可能性があり、また、あるものから別のものへの変換(translation、翻訳)(例えば、データは、解析を行うために変換または他の方式のアンパッキング(un-packing、解凍)を必要とする圧縮形式でうまく保存されるかもしれない)、
3.データ保存(ローカルに、すなわち、診療所/医療施設レベルで保存されるか、例えば、クラウド(the Cloud)内に保存されるかを問わない(クラウドは、任意に選択されるものであり、オフラインで動作する携帯可能なブラウザをベースとする報告(presentation、可視化、出力)/解析を行うことが可能である)、
4.解析であって、特に、例えば、雑音フィルタリング(ハイパス/ローパス・デジタル・フィルタリング)、および/または、QRS(心拍(Beat))検出(いくつかの事例においては、高速化および高精度化のために、連続波変換(CWT)を有する)を有するもの、および/または、
5.データ/解析結果の報告(presentation、可視化、出力)であって、1または複数のグラフィカル・ユーザ・インタフェース(GUI)であって、おそらく、より具体的には、全体的なサマリーおよび/または全体的な統計値および/または患者誘発事象の異常に関するサマリーを伴うもの;
時間(incident、時刻、区間、インシデント)ごとに(前へ、次へ)、血中酸素飽和度、ストレスとの相関(stress correlation)、もしくはその他同様のものについての異常データのストリップ・ビュー(Strip view)を別の詳細レベルで報告すること;および/または
介護者が、時間(incident、時刻、区間、インシデント)ごとに、ブックマークすること/アノテーションを付記すること/メモを付記することを可能にすることを有するもの、および/または
印刷する能力
を有することが可能である。
i)デバイスに搭載された1つのソフトウエア・パッケージであって、心電図(右足駆動式、および/または、p波、qrs波および/またはt波)、または酸素飽和度、またはxyz加速度であって、互いに同期するもののうちの1つまたは複数のものから獲得された複数のデータ信号から取得されたいくつかの測定値を保存するように構成され、それにより、医師が、前記複数の測定値についての時刻歴(tenporal history)を(例えば、いくつかの例においては、1−2週間の間隔で)アクセスすることが可能となり、それにより、心臓に関する事象の発生前、発生中または発生後において患者の活動度がどの程度であったかについての有用な情報を提供されることが可能であるもの。
ii)前記リアルタイムに測定された複数のパラメータを近くのステーションまたは中継地にリアルタイムで送信することを代替的に(alternately)管理するための選択肢(alternative、代替案)。および/または、
iii)デバイスに搭載されていない心電図解析用ソフトウエアであって不整脈を認識することを目的とするもの。
テーブル1:
1.心拍数の最小値、最大値および平均値
2.QRS幅の平均値
3.PR間隔の平均値
4.QT間隔の平均値
5.ST偏位の平均値
さらに、前記ソフトウエアは、広範囲にわたる種々の不整脈を認識するように構成されることが可能であり、それら不整脈は、次のようなものである。
テーブル2A:
1.サイナスリズム
2.サイナスリズム+IVCD(心室内伝導障害)
3.洞徐脈
4.洞徐脈+IVCD
5.洞頻脈
6.脈の結滞(PAUSE)
7.分類不可能なリズム
8.アーチファクト
テーブル2B:
9.心房細動/心房粗動体血管抵抗SVR(遅い)
10.心房細動/心房粗動心電図Rの変動係数CVR(正常レート)
11.心房細動/心房粗動RVR(速い)
12.第1度房室ブロック+サイナスリズム
13.第1度房室ブロック+洞頻脈
14.第1度房室ブロック+洞徐脈
15.第2度房室ブロック
16.第3度房室ブロック
17.心房期外収縮
18.上室頻拍
19.心室期外収縮
20.2連発心室期外収縮(COUPLET)
21.心室二段脈
22.心室三段脈
23.固有心室調律
24.心室頻拍
25.遅伝心室頻拍
(態様1)
生理パラメータをモニタリングするデバイスであって、
当該デバイスは、前記生理パラメータのモニタリングのために被検者の皮膚に装着されるように構成されており、
当該デバイスは、
基板と、
その基板に装着される、導電性を有する導電性センサ(conductive sensor)と、
少なくとも1つの導電性粘着部および少なくとも1つの非導電性粘着部を有する両面複合(composite、コンポジット、異種混成型)粘着体(adhesive)と
を含み、
前記両面複合粘着体は、前記基板および前記導電性センサに装着されており、
前記少なくとも1つの導電性粘着部は、前記被検者から前記導電性センサに伝導によって(conductive、導通によって)信号伝達を行うために、伝導によって信号伝達可能な状態で前記導電性センサに接触する状態で配置されるとともに、前記被検者の皮膚に伝導可能な状態で装着されるように構成されるデバイス。
(態様2)
前記複合粘着体のうちの導電性粘着部は、対応するセンサに接続されるとともに、その対応するセンサを前記皮膚に対して実質的に動かないように保持するために、前記複合粘着体のうちの導電性粘着部は、前記皮膚に実質的に固定されて装着され、それにより、前記皮膚に対して発生し得る相対的なセンサの動きの抑制もしくは阻止またはそれらの双方を行う態様1に記載のデバイス。
(態様3)
前記導電性粘着部のうち、前記対応するセンサおよび前記皮膚に装着される部分は、前記皮膚に対する前記センサの相対的な動きを阻止し、それにより、雑音を除去してクリーンな信号を提供する態様2に記載のデバイス。
(態様4)
前記生理パラメータは、心電図(electrocardiography)、容積脈波(photoplethysmography)、動脈血酸素飽和度(pulse oximetry)または被検者加速度(subject acceleration)のうちの1つもしくは複数のものまたはそれらのすべてについての1つまたは複数の信号を有する態様1に記載のデバイス。
(態様5)
前記導電性センサは、心電図用の電極を有する態様4に記載のデバイス。
(態様6)
前記電極は、DRL回路用電極の代わりにそれと同じ機能を実現する代理(proxy、プロキシ)DRL回路用電極である態様5に記載のデバイス。
(態様7)
前記基板に装着された複数の導電性センサを含み、
前記複合粘着体は、複数の導電性粘着部を有し、それら導電性粘着部は、前記被検者から前記導電性センサに伝導によって信号伝達を行うために、伝導によって伝達可能な状態で前記複数の導電性センサのうち対応するものに接触する状態で配置されるとともに、前記被検者の皮膚に伝導可能な状態で装着されるように構成される態様1に記載のデバイス。
(態様8)
前記複数の導電性センサは、心電図用の電極を少なくとも1つ、2つまたは3つを有する態様7に記載のデバイス。
(態様9)
前記複数の電極のうちの1つは、DRL回路用電極の代わりにそれと同じ機能を実現する代理(proxy、プロキシ)DRL回路用電極である態様8に記載のデバイス。
(態様10)
当該デバイスは、取得されたデータおよび解析結果のうちの一方または双方を受信用システム・コンポーネントに提供するように構成される態様1に記載のデバイス。
(態様11)
前記一方または双方の前記取得されたデータまたは解析結果は、無線接続または有線接続のうちの一方または双方により送信される態様10に記載のデバイス。
(態様12)
前記受信用システム・コンポーネントは、コンピューティング・デバイスである態様10に記載のデバイス。
(態様13)
被検者の生理信号に対応する生理データを取得するとともに解析するシステムであって、
被検者からの生理データの取得と、前記生理データの送信および解析のうちの一方または双方とを行うウェアラブルなデバイスと、
そのデバイスによって送信された生理データを受信する受信用システム・コンポーネントと
を含むシステム。
(態様14)
前記ウェアラブルなデバイスは、取得されたデータを保存するためのオンボード・メモリを含む態様13に記載のシステム。
(態様15)
前記受信用システム・コンポーネントは、前記ウェアラブルなデバイスから受信したデータを解析するように構成されるコンピューティング・デバイスである態様13に記載のシステム。
(態様16)
前記ウェアラブルなデバイスは、少なくとも1つの電極と、複合粘着体とを有しており、その複合粘着体は、少なくとも1つの導電性粘着部を前記少なくとも1つの電極と信号伝達を行う状態で有する態様13に記載のシステム。
(態様17)
前記ウェアラブルなデバイスは、少なくとも1つの電極と、その少なくとも1つの電極が、DRL回路用電極の代わりにそれと同じ機能を実現する代理(proxy、プロキシ)DRL回路用電極として機能するための回路とを有する態様13に記載のシステム。
(態様18)
心臓をモニタリングするために少なくとも1つの電極を有するウェアラブル・モニタリング・デバイスを用いる心臓モニタリングにおいて雑音を低減する方法であって、
前記ウェアラブル・モニタリング・デバイスを被検者に装着する工程であって、少なくとも1つの導電部を有する複合粘着体を使用する工程と、前記少なくとも1つの電極が、DRL回路用電極の代わりにそれと同じ機能を実現する代理(proxy、プロキシ)DRL回路用電極として動作するように適合設計された回路(circuit adaptation、回路アダプテーション)を使用する工程とのうちの一方または双方を含むものと、
生理信号を表すデータを取得する工程と、
前記データを解析する工程と
を含む方法。
(態様19)
さらに、前記データを前記ウェアラブル・モニタリング・デバイスから送信する工程を含む態様18に記載の方法。
(態様20)
さらに、
前記データを前記ウェアラブル・モニタリング・デバイスから送信する工程と、
前記データの送信または解析のうちの一方または双方に先立ち、前記データを保存する工程と
を含む態様18に記載の方法。
(態様21)
胸部用参照電極(chest reference electrode)を代理(proxy、プロキシ)右脚電極として使用することによって右脚電極を模擬する回路であって、
心電図用の第1電極に接続される接続部と、
心電図用の第2電極に接続される接続部と、
心電図用の参照電極に接続される接続部と、
アンプと
を含み、
前記複数の接続部はすべて、前記アンプに接続され、
前記アンプは、前記第1電極および第2電極の電圧レベルを保持し、
前記代理(proxy、プロキシ)右脚電極の信号は、前記参照電極を用いて測定されることが可能である回路。
(態様22)
胸部用参照電極(chest reference electrode)を代理(proxy、プロキシ)右脚電極として使用することによって右脚電極を模擬する回路であって、
検出用電極に接続される接続部と、
駆動用電極に接続される接続部と、
バイアス電圧が入力されるバイアス電圧入力部と、
アンプと
を含み、
前記複数の接続部および前記バイアス電圧入力部は、前記アンプに接続され、
前記アンプの出力部は、前記駆動用電極に接続され、前記アンプの反転入力部は、前記検出用電極に接続され、前記アンプの非反転入力部は、バイアス電圧に接続され、
前記アンプは、前記検出用電極の電圧を、前記バイアス電圧に近いレベルに保持し、
前記代理(proxy、プロキシ)右脚電極の信号は、第三の電極(a third electrode、前記検出用電極および前記駆動用電極とは異なる電極)を用いて測定されることが可能である回路。
(態様23)
患者の生理パラメータをモニタリングするデバイスであって、
上面および底面を有する平坦弾性基板に埋設されるフレキシブルな回路を含み、そのフレキシブルな回路は、(i)前記平坦弾性基板の前記底面に搭載された少なくとも1つのセンサであって、前記患者との間での電気的なまたは光学的な信号伝達が可能であるものと、(ii)少なくとも1つの信号処理モジュールであって、前記少なくとも1つのセンサから信号を受信し、その信号を、患者データとして保存するために変換するものと、(iii)患者データを受信して保存する少なくとも1つのメモリ・モジュールと、(iv)保存された患者データを外部デバイスに伝送するための少なくも1つのデータ伝送(communication、通信)モジュールと、(v)前記少なくとも1つのセンサと、前記少なくとも1つの信号処理モジュールと、前記少なくとも1つのメモリ・モジュールと、前記少なくとも1つのデータ伝送モジュールとのそれぞれのタイミング(timing、動作タイミング)および動作内容(operation)を制御する制御モジュールであって、前記少なくとも1つのデータ伝送モジュールによって患者データの伝送を行うことを指令するコマンドと、患者データを前記少なくとも1つのメモリ・モジュールから消去しおよび/または一掃する(wipe)ことを指令するコマンドとを受信することが可能であるものとを有しており、
当該デバイスは、さらに、前記平坦弾性基板の前記底面に着脱可能に装着される異方性導電性粘着体を含み、その異方性導電性粘着体は、前記患者の皮膚に装着されることと、前記平坦弾性基板の前記底面に対して直角な方向のみに実質的に一致する方向に電気信号を流すこととが可能であるデバイス。
(態様24)
前記少なくとも1つのセンサは、前記患者の心臓から電気的な信号を測定する電極と、光学的血中酸素センサとを有する態様23に記載のデバイス。
(態様25)
前記少なくとも1つのデータ伝送モジュールは、前記患者データを外部デバイスに無線信号により送信することが可能である態様23に記載のデバイス。
(態様26)
前記患者データを受信する前記外部デバイスは、信号を中継する信号リレー・デバイスである態様25に記載のデバイス。
(態様27)
前記フレキシブルな回路は、無線で電力を供給されることが可能である態様23に記載のデバイス。
(態様28)
前記少なくとも1つの信号処理モジュールは、前記患者の心臓からの測定用電気信号からの前記少なくとも1つの電極からの信号と、前記患者データからのコモン・モード・ノイズを低減するためのDRL回路からの信号とを受信する態様23に記載のデバイス。
(態様29)
患者の生理パラメータをモニタリングするシステムであって、
上面および底面を有する平坦弾性基板に埋設されるフレキシブルな回路を含み、そのフレキシブルな回路は、(i)前記平坦弾性基板の前記底面に搭載された少なくとも1つのセンサであって、前記患者との間での電気的なまたは光学的な信号伝達が可能であるものと、(ii)少なくとも1つの信号処理モジュールであって、前記少なくとも1つのセンサから信号を受信し、その信号を、患者データとして保存するために変換するものと、(iii)患者データを受信して保存する少なくとも1つのメモリ・モジュールと、(iv)保存された患者データを外部デバイスに伝送するための少なくも1つのデータ伝送(communication、通信)モジュールと、(v)前記少なくとも1つのセンサと、前記少なくとも1つの信号処理モジュールと、前記少なくとも1つのメモリ・モジュールと、前記少なくとも1つのデータ伝送モジュールとのそれぞれのタイミング(timing、動作タイミング)および動作内容(operation)を制御する制御モジュールであって、前記少なくとも1つのデータ伝送モジュールによって患者データの伝送を行うことを指令するコマンドと、患者データを前記少なくとも1つのメモリ・モジュールから消去しおよび/または一掃する(wipe)ことを指令するコマンドとを受信することが可能であるものとを有しており、
当該システムは、さらに、前記平坦弾性基板の前記底面に着脱可能に装着される異方性導電性粘着体を含み、その異方性導電性粘着体は、前記患者の皮膚に装着されることと、前記平坦弾性基板の前記底面に対して直角な方向のみに実質的に一致する方向に電気信号を流すこととが可能であり、
当該システムは、さらに、コンピュータであって、患者データを前記データ伝送モジュールから受信すること、前記患者のデータを表示すること、および/または、患者データによって表される数値が予め定められた限界値を超えると警告を発生させることとを行うものを含むシステム。
(態様30)
前記導電性粘着体は、異方性導電性粘着体である態様29に記載のシステム。
(態様31)
個人の酸素飽和度を測定する方法であって、
複数の心拍にわたって心電図信号を測定する測定工程と、
複数の心拍にわたって1または複数のパルス・オキシメトリ信号を、前記心電図信号と前記1または複数のパルス・オキシメトリ信号とが、1または複数の心拍にわたって互いに同期するように測定する測定工程と、
前記心電図信号の一部と、前記1または複数のパルス・オキシメトリ信号とであって、1または複数の心拍にまたって互いに同期するものを互いに比較し、それにより、前記1または複数のパルス・オキシメトリ信号の各々の定常成分(constant component)と主周期成分(primary periodic component)とを検出する比較工程と、
前記1または複数のパルス・オキシメトリ信号のうちの前記定常成分および前記主周期成分から酸素飽和度を決定する決定工程と
を含む方法。
(態様32)
前記パルス・オキシメトリ信号は、反射性赤外信号および反射性赤色光信号を含む態様31に記載の方法。
(態様33)
前記比較工程は、
前記心電図信号の特性に基づいて前記パルス・オキシメトリ信号の複数の間隔(intervals、時間的区間)を定義する工程と、
それら複数の間隔にわたって前記パルス・オキシメトリ信号の複数の数値を平均化する工程と
を含む態様31に記載の方法。
(態様34)
前記パルス・オキシメトリ信号のうちの前記定常成分および前記主周期成分は、前記複数の平均値から決定される態様33に記載の方法。
(態様35)
前記心電図信号は、R波信号を有し、そのR波信号の各々は、各心拍ごとにピーク値を有し、前記複数の間隔は、前記R波信号の複数のピーク値に着目して決定される態様31に記載の方法。
(態様36)
前記心電図信号および前記パルス・オキシメトリ信号は、前記個人の胸部位置から測定される態様31に記載の方法。
(態様37)
生理パラメータをモニタリングするデバイスであって、
当該デバイスは、前記生理パラメータのモニタリングのために被検者の皮膚に装着されるように構成されており、
当該デバイスは、
基板と、
その基板に装着される少なくとも1つの導電性センサと、
両面複合(composite、コンポジット、異種混成型)粘着体と
を含み、
前記両面複合粘着体は、前記被検者の皮膚に剥離可能に粘着される第1粘着層と、前記基板および前記少なくとも1つの導電性センサに剥離可能に粘着される第2粘着層とを有しており、
前記第1粘着層は、導電性を有する少なくとも1つの導電性粘着部と、非導電性を有する少なくとも1つの非導電性粘着部とを互いに隣接した状態で有し、それにより、少なくとも1つの電極エリアが当該第1粘着層上に形成され、
前記第2粘着層は、非導電性を有し、前記第1粘着層のうちの前記電極エリアを実質的に覆うことがないように前記第1粘着層上に位置し、
前記少なくとも1つの導電性粘着部は、前記被検者の皮膚から前記少なくとも1つの導電性センサに導通によって信号伝達を行うために、導通によって信号伝達可能な状態で前記少なくとも1つの導電性センサに接触する状態で配置されるとともに、前記被検者の皮膚に導通可能な状態で装着されるように構成されるデバイス。
(態様38)
前記両面複合粘着体は、前記基板および前記少なくとも1つの導電性センサに剥離可能に粘着される一側粘着面と、前記被検者の皮膚に剥離可能に粘着される他側粘着面とを有し、
前記一側粘着面は、前記第2粘着層の片面である一方、前記他側粘着面は、前記第1粘着層の片面である態様37に記載のデバイス。
生理パラメータをモニタリングするデバイスであって、
当該デバイスは、前記生理パラメータのモニタリングのために被検者の皮膚に装着されるように構成されており、
当該デバイスは、
基板と、
その基板に装着される少なくとも1つの導電性センサと、
両面複合(composite、コンポジット、異種混成型)粘着体と
を含み、
前記両面複合粘着体は、前記被検者の皮膚に剥離可能に粘着される第1粘着層と、前記基板および前記少なくとも1つの導電性センサに剥離可能に粘着される第2粘着層とを有しており、
前記第1粘着層は、導電性を有する少なくとも1つの導電性粘着部と、非導電性を有する少なくとも1つの非導電性粘着部とを互いに隣接した状態で有し、それにより、少なくとも1つの電極エリアが当該第1粘着層上に形成され、
前記第2粘着層は、非導電性を有し、前記第1粘着層のうちの前記電極エリアを実質的に覆うことがないように前記第1粘着層上に位置し、
前記少なくとも1つの導電性粘着部は、前記被検者の皮膚から前記少なくとも1つの導電性センサに導通によって信号伝達を行うために、導通によって信号伝達可能な状態で前記少なくとも1つの導電性センサに接触する状態で配置されるとともに、前記被検者の皮膚に導通可能な状態で装着されるように構成されるデバイス。
(形態2)
前記両面複合粘着体のうちの前記少なくとも1つの導電性粘着部は、対応する導電性センサに接続されるとともに、その対応する導電性センサを前記皮膚に対して実質的に動かないように保持するために、前記両面複合粘着体のうちの前記少なくとも1つの導電性粘着部は、前記皮膚に実質的に固定されて装着され、それにより、前記皮膚に対して発生し得る相対的な導電性センサの動きの抑制もしくは阻止またはそれらの双方を行う形態1に記載のデバイス。
(形態3)
前記少なくとも1つの導電性粘着部のうち、前記対応する導電性センサおよび前記皮膚に装着される部分は、前記皮膚に対する前記導電性センサの相対的な動きを阻止し、それにより、雑音を除去してクリーンな信号を提供する形態2に記載のデバイス。
(形態4)
前記生理パラメータは、心電図(electrocardiography)、容積脈波(photoplethysmography)、動脈血酸素飽和度(pulse oximetry)または被検者加速度(subject acceleration)のうちの1つもしくは複数のものまたはそれらのすべてについての1つまたは複数の信号を有する形態1ないし3のいずれかに記載のデバイス。
(形態5)
前記少なくとも1つの導電性センサは、心電図用の電極を有する形態4に記載のデバイス。
(形態6)
前記電極は、DRL回路用電極の代わりにそれと同じ機能を実現する代理(proxy、プロキシ)DRL回路用電極である形態5に記載のデバイス。
(形態7)
前記少なくとも1つの導電性センサは、前記基板に装着された複数の導電性センサを含み、
前記両面複合粘着体は、複数の導電性粘着部を有し、それら導電性粘着部は、前記被検者の皮膚から前記複数の導電性センサのうち対応するものに導通によって信号伝達を行うために、導通によって伝達可能な状態で前記複数の導電性センサのうち対応するものに接触する状態で配置されるとともに、前記被検者の皮膚に導通可能な状態で装着されるように構成される形態1ないし5のいずれかに記載のデバイス。
(形態8)
前記複数の導電性センサは、心電図用の電極を少なくとも1つ、2つまたは3つを有する形態7に記載のデバイス。
(形態9)
前記複数の電極のうちの1つは、DRL回路用電極の代わりにそれと同じ機能を実現する代理(proxy、プロキシ)DRL回路用電極である形態8に記載のデバイス。
(形態10)
当該デバイスは、取得されたデータを受信用システム・コンポーネントに提供するように構成される形態1ないし9のいずれかに記載のデバイス。
(形態11)
前記取得されたデータは、無線接続または有線接続のうちの一方または双方により送信される形態10に記載のデバイス。
(形態12)
前記受信用システム・コンポーネントは、コンピューティング・デバイスである形態10または11に記載のデバイス。
Claims (6)
- 個人の酸素飽和度を測定する方法であって、
複数の心拍にわたって心電図信号を測定する測定工程と、
複数の心拍にわたって1または複数のパルス・オキシメトリ信号を、前記心電図信号と前記1または複数のパルス・オキシメトリ信号とが、1または複数の心拍にわたって互いに同期するように測定する測定工程と、
前記心電図信号の一部と、前記1または複数のパルス・オキシメトリ信号とであって、1または複数の心拍にまたって互いに同期するものを互いに比較し、それにより、前記1または複数のパルス・オキシメトリ信号の各々の定常成分(constant component)と主周期成分(primary periodic component)とを検出する比較工程と、
前記1または複数のパルス・オキシメトリ信号のうちの前記定常成分および前記主周期成分から酸素飽和度を決定する決定工程と
を含む方法。 - 前記パルス・オキシメトリ信号は、反射性赤外信号および反射性赤色光信号を含む請求項1に記載の方法。
- 前記比較工程は、
前記心電図信号の特性に基づいて前記パルス・オキシメトリ信号の複数の間隔(intervals、時間的区間)を定義する工程と、
それら複数の間隔にわたって前記パルス・オキシメトリ信号の複数の数値を平均化する工程と
を含む請求項1に記載の方法。 - 前記パルス・オキシメトリ信号のうちの前記定常成分および前記主周期成分は、前記複数の平均値から決定される請求項3に記載の方法。
- 前記心電図信号は、R波信号を有し、そのR波信号の各々は、各心拍ごとにピーク値を有し、前記複数の間隔は、前記R波信号の複数のピーク値に着目して決定される請求項1に記載の方法。
- 前記心電図信号および前記パルス・オキシメトリ信号は、前記個人の胸部位置から測定される請求項1に記載の方法。
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