JP7083250B2 - インピーダンス検知 - Google Patents
インピーダンス検知 Download PDFInfo
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- JP7083250B2 JP7083250B2 JP2017565989A JP2017565989A JP7083250B2 JP 7083250 B2 JP7083250 B2 JP 7083250B2 JP 2017565989 A JP2017565989 A JP 2017565989A JP 2017565989 A JP2017565989 A JP 2017565989A JP 7083250 B2 JP7083250 B2 JP 7083250B2
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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
- A61B5/725—Details of waveform analysis using specific filters therefor, e.g. Kalman or adaptive filters
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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
- A61B5/021—Measuring pressure in heart or blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
- A61B5/0535—Impedance plethysmography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
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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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
- A61B2560/0204—Operational features of power management
- A61B2560/0214—Operational features of power management of power generation or supply
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/04—Arrangements of multiple sensors of the same type
-
- 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
- A61B5/0295—Measuring blood flow using plethysmography, i.e. measuring the variations in the volume of a body part as modified by the circulation of blood therethrough, e.g. impedance plethysmography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6825—Hand
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Physiology (AREA)
- Signal Processing (AREA)
- Cardiology (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Artificial Intelligence (AREA)
- Psychiatry (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Hematology (AREA)
- Vascular Medicine (AREA)
- Power Engineering (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Amplitude Modulation (AREA)
Description
本出願は、その内容の全体があらゆる目的のために参照により本明細書に組み込まれる、「IMPEDANCE SENSING」という表題の2015年7月9日に出願された米国特許出願第14/795,703号の利益および優先権を主張する。
102 励振回路
104 信号処理回路
106 電源
108 生物体
110 電極
112 電極
114 増幅器
116 ミキサ
118 コントローラ
120 フィルタ
122 バッファ
124 ADC
230 励振信号
232 電圧応答信号
234 包絡線
640 動脈拡張信号
642 モデル動脈拡張信号
700 プロセス
800 デバイス
840 メモリ
842 インターフェース
844 電源
Claims (15)
- 振幅変調された信号からデータを復元することが可能なインピーダンス検知デバイス(100、800)であって、
搬送波周波数を有する振幅変調された信号を検知するように動作可能な検知回路(114)であって、前記振幅変調された信号が生物体へ与えられた励振信号に対する前記生物体の応答を表す、検知回路と、
前記振幅変調された信号を、ミキシング周波数を有するミキシング信号と混合して、前記搬送波周波数より低い中間周波数を有する、周波数下方シフトされた信号を提供するように動作可能なミキサ(116)と、
前記周波数下方シフトされた信号をフィルタリングして、フィルタリングされた信号を提供するように動作可能なフィルタ(120)であって、前記フィルタが通過帯域を有するバンドパスフィルタを含み、前記通過帯域が固定された中心周波数を有する、フィルタと、
前記フィルタリングされた信号をアンダーサンプリング周波数においてアンダーサンプリングしてデジタル信号を提供するように動作可能なサンプラー(124)であって、前記デジタル信号が変調信号を表すものであり、前記アンダーサンプリング周波数が前記フィルタリングされた信号の帯域幅の2倍より高い、サンプラーと、
前記バンドパスフィルタの前記固定された通過帯域の中心周波数に等しい前記中間周波数を有する前記周波数下方シフトされた信号を提供するように、前記ミキシング信号の前記ミキシング周波数を設定するように動作可能なコントローラと
を備える、デバイス。 - 前記振幅変調された信号が、前記変調信号に対して位相変調されている、請求項1に記載のデバイス。
- 前記振幅変調された信号を受け取り前記振幅変調された信号を前記検知回路に渡すように動作可能な少なくとも1つの第1の電極(112)をさらに含み、前記少なくとも1つの第1の電極が生物体(108)と結合するように適合される、請求項1または2に記載のデバイス。
- 前記生物体と結合するように適合される少なくとも1つの第2の電極(110)と、
前記搬送波周波数において励振信号を生成するように動作可能な励振信号生成器(102)とをさらに含み、前記少なくとも1つの第2の電極が前記生物体へ前記励振信号を与えるように適合される、請求項3に記載のデバイス。 - 前記変調信号が前記生物体のインピーダンスを表すものである、請求項4に記載のデバイス。
- 前記搬送波周波数が1MHz以上である、請求項5に記載のデバイス。
- 前記励振信号が電流信号を含み、
前記振幅変調された信号が、前記インピーダンスに基づく前記励振信号に対する前記生物体の電圧応答を表す電圧信号を含む、請求項5または6に記載のデバイス。 - 前記励振信号が電圧信号を含み、
前記振幅変調された信号が、前記インピーダンスに基づく前記励振信号に対する前記生物体の電流応答を表す電流信号を含む、請求項5または6に記載のデバイス。 - 電源(844)と、
前記検知回路、前記ミキサ、前記フィルタ、前記サンプラー、および前記電源を少なくとも部分的に取り囲む装着可能なハウジング(100、800)と、
前記装着可能なハウジングをユーザに結合するように適合される結合機構と
をさらに含む、請求項1から8のいずれか一項に記載のデバイス。 - 前記変調信号が前記振幅変調された信号に対応し、前記変調信号が前記フィルタリングされた信号の前記帯域幅の2倍より高い前記アンダーサンプリング周波数に基づく、請求項1から9のいずれか一項に記載のデバイス。
- 前記フィルタがパッシブフィルタを含む、請求項1から10のいずれか一項に記載のデバイス。
- 前記コントローラが前記搬送波周波数を設定するように動作可能である、請求項11に記載のデバイス。
- 前記中間周波数が、前記変調信号の周波数より高い、請求項1から12のいずれか一項に記載のデバイス。
- 前記ミキサがスイッチングデバイスを含み、前記スイッチングデバイスが単極、単投(SPST)スイッチまたは単極、双投(SPDT)スイッチを含む、請求項1から13のいずれか一項に記載のデバイス。
- 前記ミキシング信号が方形波信号である、請求項1から14のいずれか一項に記載のデバイス。
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JP2022064494A JP7280409B2 (ja) | 2015-07-09 | 2022-04-08 | インピーダンス検知 |
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US14/795,703 | 2015-07-09 | ||
US14/795,703 US11471109B2 (en) | 2015-07-09 | 2015-07-09 | Methods and devices for recovering data from an amplitude-modulated signal |
PCT/US2016/037264 WO2017007574A1 (en) | 2015-07-09 | 2016-06-13 | Impedance sensing |
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JP7083250B2 true JP7083250B2 (ja) | 2022-06-10 |
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US (1) | US11471109B2 (ja) |
EP (1) | EP3319506B1 (ja) |
JP (2) | JP7083250B2 (ja) |
KR (1) | KR20180027500A (ja) |
CN (1) | CN107847139B (ja) |
BR (1) | BR112018000508A2 (ja) |
WO (1) | WO2017007574A1 (ja) |
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JP2002319826A (ja) | 1998-10-21 | 2002-10-31 | Parkervision Inc | ダイナミックレンジを改良した相補的fetを使用して信号をダウン−コンバートする方法および回路 |
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BR112018000508A2 (pt) | 2018-09-11 |
CN107847139A (zh) | 2018-03-27 |
JP7280409B2 (ja) | 2023-05-23 |
US11471109B2 (en) | 2022-10-18 |
CN107847139B (zh) | 2022-01-04 |
WO2017007574A1 (en) | 2017-01-12 |
EP3319506B1 (en) | 2023-03-08 |
EP3319506A1 (en) | 2018-05-16 |
US20170007186A1 (en) | 2017-01-12 |
JP2022093382A (ja) | 2022-06-23 |
JP2018522637A (ja) | 2018-08-16 |
KR20180027500A (ko) | 2018-03-14 |
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