JP2018511390A - 光学的分析システム及び方法 - Google Patents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
- A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/02416—Detecting, measuring or recording pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/026—Measuring blood flow
- A61B5/0261—Measuring blood flow using optical means, e.g. infrared light
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7242—Details of waveform analysis using integration
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Abstract
Description
分析されるサンプルを照射する光源と、
前記光源を動作するドライバと、
前記分析されるサンプルにより反射された又は透過された光を受け、センサ信号を生成する光検出器と、
トランスインピーダンス増幅器を有し、前記センサ信号を処理する第1の信号処理回路と、
前記光源に印加される駆動信号を表す、前記ドライバにより提供される電気信号を処理する第2の信号処理回路であって、前記トランスインピーダンス増幅器の周波数伝達特性に対応するフィルタ周波数特性を持つフィルタを有する、第2の信号処理回路と、
前記処理された電気信号を使用して信号対雑音比を向上させるように前記センサ信号を更に処理する補償回路と、
を有する。
前記処理された電気信号を正規化し、前記正規化された処理された電気信号の逆数である乗数を提供する正規化回路と、
前記乗数に対応する倍率を提供するスケーリング要素と、
を有してもよい。
光源を使用して分析されるサンプルを照射するステップと、
前記分析されるサンプルにより反射された又は透過された光を受け、これに応答してセンサ信号を生成するステップと、
トランスインピーダンス増幅器を有する第1の信号処理回路を使用して前記センサ信号を処理するステップと、
第2の信号処理回路を使用して前記光源に印加される駆動信号を表す電気信号を処理するステップであって、前記第2の信号処理回路が、前記トランスインピーダンス増幅器の周波数伝達特性に対応するフィルタ周波数特性を持つフィルタを有する、ステップと、
前記処理された電気信号を使用して信号対雑音比を向上させるように前記センサ信号を更に処理するステップと、
を有する。
Claims (13)
- 分析されるサンプルを照射する光源と、
前記光源を動作するドライバと、
前記分析されるサンプルにより反射された又は透過された光を受ける光検出器と、
トランスインピーダンス増幅器を有し、前記センサ信号を処理する第1の信号処理回路と、
前記トランスインピーダンス増幅器の周波数伝達特性に対応するフィルタ周波数特性を持つフィルタを有し、前記光源に印加される駆動信号を表す前記ドライバにより提供される電気信号を処理する第2の信号処理回路と、
前記処理された電気信号を使用して信号対雑音比を向上させるように前記センサ信号を更に処理する補償回路と、
を有する光学的分析システム。 - 前記第1の信号処理回路が、第1の積分器回路及び第1のアナログデジタル変換器を有する、請求項1に記載のシステム。
- 前記第2の信号処理回路が、前記第1の積分器回路に対応する第2の積分器回路及び第2のアナログデジタル変換器を有する、請求項2に記載のシステム。
- 前記第1及び第2の積分器回路並びに前記第1及び第2のアナログデジタル変換器が、同じタイミング信号で制御される、請求項3に記載のシステム。
- 前記補償回路が、
前記処理された電気信号を正規化し、前記正規化された処理された電気信号の逆数である乗数を提供する、正規化回路と、
前記乗数に対応する倍率を提供するスケーリング要素と、
を有する、請求項1乃至4のいずれか一項に記載のシステム。 - 前記電気信号は、前記光源の駆動電流が通過する電流感知抵抗器を通る電圧を有する、請求項1乃至5のいずれか一項に記載のシステム。
- 前記ドライバは、前記光源を通る電流を生成するように制御電圧が印加される駆動トランジスタを有する、請求項1乃至6のいずれか一項に記載のシステム。
- オキシメータ、又は
光学的心拍モニタ
を有する、請求項1乃至7のいずれか一項に記載のシステム。 - 光源を使用して分析されるサンプルを照射するステップと、
前記分析されるサンプルにより反射された又は透過された光を受け、これに応答してセンサ信号を生成するステップと、
トランスインピーダンス増幅器を有する第1の信号処理回路を使用して前記センサ信号を処理するステップと、
前記トランスインピーダンス増幅器の周波数伝達特性に対応するフィルタ周波数特性を持つフィルタを有する第2のアナログデジタル変換器を使用して、前記光源に印加される駆動信号を表す電気信号を処理するステップと、
前記処理された電気信号を使用して信号対雑音比を向上させるように前記センサ信号を更に処理するステップと、
を有する光学的分析方法。 - 前記センサ信号の処理及び前記電気信号の処理が、対応する周波数伝達関数に基づく、請求項9に記載の方法。
- 前記センサ信号の処理及び前記電気信号の処理が、同じタイミング信号で制御される信号積分及びアナログデジタル変換を有する、請求項9又は10に記載の方法。
- 前記更に処理するステップが、前記処理された電気信号を正規化するステップと、前記正規化された処理された電気信号の逆数である乗数を提供するステップと、前記乗数に対応するゲインを提供するステップとを有する、請求項9乃至11のいずれか一項に記載の方法。
- オキシメトリ方法、又は
光学的心拍モニタリング方法、
を有する、請求項9乃至12のいずれか一項に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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EP15162451.7 | 2015-04-02 | ||
EP15162451 | 2015-04-02 | ||
PCT/EP2016/056835 WO2016156341A1 (en) | 2015-04-02 | 2016-03-30 | Optical analysis system and method |
Publications (2)
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JP2018511390A true JP2018511390A (ja) | 2018-04-26 |
JP6373511B2 JP6373511B2 (ja) | 2018-08-15 |
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JP2017548435A Expired - Fee Related JP6373511B2 (ja) | 2015-04-02 | 2016-03-30 | 光学的分析システム及び方法 |
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US (1) | US10517517B2 (ja) |
EP (1) | EP3277172B1 (ja) |
JP (1) | JP6373511B2 (ja) |
CN (1) | CN107427240B (ja) |
BR (1) | BR112017020749A2 (ja) |
RU (1) | RU2696422C2 (ja) |
TR (1) | TR201902317T4 (ja) |
WO (1) | WO2016156341A1 (ja) |
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EP3406194B1 (en) * | 2017-05-23 | 2021-02-24 | ams AG | Circuit arrangement for an optical monitoring system and method for optical monitoring |
JP2019097771A (ja) * | 2017-11-30 | 2019-06-24 | フクダ電子株式会社 | パルスオキシメータ及び生体情報測定用プローブ |
CN109738065B (zh) * | 2018-12-25 | 2021-02-23 | 重庆湃芯创智微电子有限公司 | 一种快速光强跟踪能力的血氧检测芯片 |
US11723564B1 (en) * | 2021-02-01 | 2023-08-15 | Amazon Technologies, Inc. | Optical sensor light filtering in a wearable device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0242338A (ja) * | 1988-08-03 | 1990-02-13 | Horiba Ltd | ガス分析計 |
JPH09288785A (ja) * | 1996-04-23 | 1997-11-04 | Matsushita Electric Works Ltd | 煙感知器用電圧発生回路 |
US20140275878A1 (en) * | 2013-03-15 | 2014-09-18 | Covidien Lp | Methods and systems for equalizing physiological signals |
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US4565974A (en) * | 1984-08-13 | 1986-01-21 | At&T Bell Laboratories | Optical receiver circuit with active equalizer |
US5638816A (en) * | 1995-06-07 | 1997-06-17 | Masimo Corporation | Active pulse blood constituent monitoring |
US6720734B2 (en) * | 2002-08-08 | 2004-04-13 | Datex-Ohmeda, Inc. | Oximeter with nulled op-amp current feedback |
US7486977B2 (en) | 2005-10-27 | 2009-02-03 | Smiths Medical Pm, Inc. | Single use pulse oximeter |
US10271778B2 (en) | 2008-06-03 | 2019-04-30 | Nonin Medical, Inc. | LED control utilizing ambient light or signal quality |
US8139957B2 (en) * | 2008-06-24 | 2012-03-20 | General Instrument Corporation | High sensitivity optical receiver employing a high gain amplifier and an equalizing circuit |
US8848171B2 (en) * | 2009-12-22 | 2014-09-30 | Leica Geosystems Ag | Highly accurate distance measurement device |
US9130070B2 (en) * | 2013-04-25 | 2015-09-08 | Analog Devices, Inc. | Four-stage circuit architecture for detecting pulsed signals |
-
2016
- 2016-03-30 JP JP2017548435A patent/JP6373511B2/ja not_active Expired - Fee Related
- 2016-03-30 BR BR112017020749A patent/BR112017020749A2/pt not_active Application Discontinuation
- 2016-03-30 US US15/563,726 patent/US10517517B2/en not_active Expired - Fee Related
- 2016-03-30 WO PCT/EP2016/056835 patent/WO2016156341A1/en active Application Filing
- 2016-03-30 CN CN201680020387.4A patent/CN107427240B/zh not_active Expired - Fee Related
- 2016-03-30 EP EP16712864.4A patent/EP3277172B1/en not_active Not-in-force
- 2016-03-30 TR TR2019/02317T patent/TR201902317T4/tr unknown
- 2016-03-30 RU RU2017138262A patent/RU2696422C2/ru not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0242338A (ja) * | 1988-08-03 | 1990-02-13 | Horiba Ltd | ガス分析計 |
JPH09288785A (ja) * | 1996-04-23 | 1997-11-04 | Matsushita Electric Works Ltd | 煙感知器用電圧発生回路 |
US20140275878A1 (en) * | 2013-03-15 | 2014-09-18 | Covidien Lp | Methods and systems for equalizing physiological signals |
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Publication number | Publication date |
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CN107427240A (zh) | 2017-12-01 |
US10517517B2 (en) | 2019-12-31 |
CN107427240B (zh) | 2020-12-18 |
EP3277172B1 (en) | 2018-12-12 |
RU2017138262A3 (ja) | 2019-05-06 |
JP6373511B2 (ja) | 2018-08-15 |
RU2017138262A (ru) | 2019-05-06 |
TR201902317T4 (tr) | 2019-03-21 |
US20180085039A1 (en) | 2018-03-29 |
EP3277172A1 (en) | 2018-02-07 |
RU2696422C2 (ru) | 2019-08-01 |
WO2016156341A1 (en) | 2016-10-06 |
BR112017020749A2 (pt) | 2018-06-26 |
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