WO2017218818A3 - Method for eliminating noise in signal data from a piezoelectric device and detecting stenosis - Google Patents

Method for eliminating noise in signal data from a piezoelectric device and detecting stenosis Download PDF

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Publication number
WO2017218818A3
WO2017218818A3 PCT/US2017/037744 US2017037744W WO2017218818A3 WO 2017218818 A3 WO2017218818 A3 WO 2017218818A3 US 2017037744 W US2017037744 W US 2017037744W WO 2017218818 A3 WO2017218818 A3 WO 2017218818A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
noise cancellation
data
piezo sensor
signal data
Prior art date
Application number
PCT/US2017/037744
Other languages
French (fr)
Other versions
WO2017218818A2 (en
Inventor
Bret Kline
Peter Bakema
Young TRUONG
Richard Finlayson
Orville DAY
Original Assignee
Cvr Global, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cvr Global, Inc. filed Critical Cvr Global, Inc.
Publication of WO2017218818A2 publication Critical patent/WO2017218818A2/en
Publication of WO2017218818A3 publication Critical patent/WO2017218818A3/en

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Classifications

    • 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
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6879—Means for maintaining contact with the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—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
    • A61B5/02007—Evaluating blood vessel condition, e.g. elasticity, compliance
    • 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
    • A61B5/6822—Neck
    • 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
    • A61B5/7207—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts
    • 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
    • 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
    • A61B5/7253—Details of waveform analysis characterised by using transforms
    • A61B5/7257—Details of waveform analysis characterised by using transforms using Fourier transforms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B7/00—Instruments for auscultation
    • A61B7/02—Stethoscopes
    • A61B7/04—Electric stethoscopes
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Physiology (AREA)
  • Signal Processing (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Psychiatry (AREA)
  • Acoustics & Sound (AREA)
  • Mathematical Physics (AREA)
  • Vascular Medicine (AREA)
  • Cardiology (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

A method for eliminating noise from a data sample comprising passive noise cancellation, active noise cancellation, and a software based filtering process; said passive noise cancellation comprises collecting data from a piezo sensor that is sound isolated by a noise attenuating material surrounding said piezo sensor and forming a connection to the surface to be sampled; isolating said piezo sensor on a device comprising a membrane; said active noise cancellation comprises utilizing a second sensor adjacent to said piezo sensor to detect ambient sounds and subtracting said ambient sounds detected from said second sensor from said data; performing a wavelet analysis on said data; and performing a method selected from the group consisting Burg's method, Welch's method, and combinations thereof.
PCT/US2017/037744 2016-06-15 2017-07-07 Method for eliminating noise in signal data from a piezoelectric device and detecting stenosis WO2017218818A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662350576P 2016-06-15 2016-06-15
US62/350,576 2016-06-15

Publications (2)

Publication Number Publication Date
WO2017218818A2 WO2017218818A2 (en) 2017-12-21
WO2017218818A3 true WO2017218818A3 (en) 2018-04-12

Family

ID=60663357

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2017/037744 WO2017218818A2 (en) 2016-06-15 2017-07-07 Method for eliminating noise in signal data from a piezoelectric device and detecting stenosis

Country Status (1)

Country Link
WO (1) WO2017218818A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL3581105T3 (en) 2010-05-08 2022-11-28 The Regents Of The University Of California Apparatus for early detection of ulcers by scanning of subepidermal moisture
CA3059988C (en) 2015-04-24 2023-03-07 Bruin Biometrics, Llc Apparatus and methods for determining damaged tissue using sub-epidermal moisture measurements
GB2591708B (en) 2017-02-03 2021-11-17 Bruin Biometrics Llc Measurement of susceptibility to diabetic foot ulcers
CN116473517A (en) 2017-11-16 2023-07-25 布鲁恩生物有限责任公司 Strategic treatment of pressure ulcers using subsurface moisture values
GB2584226B (en) 2018-02-09 2022-06-22 Bruin Biometrics Llc Detection of tissue damage
GB2591711B (en) 2018-10-11 2022-02-02 Bruin Biometrics Llc Device with detachable element
CN109596264A (en) * 2018-11-14 2019-04-09 珠海市万瑙特健康科技有限公司 Array pressure sensor detecting device
WO2022169850A1 (en) 2021-02-03 2022-08-11 Bruin Biometrics, Llc Methods of treating deep and early-stage pressure induced tissue damage

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6353644B1 (en) * 1998-05-13 2002-03-05 Globespan, Inc. System and method for performing time domain equalization
US20020151795A1 (en) * 2001-03-02 2002-10-17 Yoram Palti Method and apparatus for detecting arterial stenosis
US20050222515A1 (en) * 2004-02-23 2005-10-06 Biosignetics Corporation Cardiovascular sound signature: method, process and format
US20050234349A1 (en) * 2004-02-10 2005-10-20 Pravica David W Methods, systems, and computer program products for analyzing cardiovascular sounds using eigen functions
US20080139951A1 (en) * 2006-12-08 2008-06-12 Cardiac Pacemakers, Inc. Detection of Stenosis
US20120232427A1 (en) * 2010-06-24 2012-09-13 Cvr Global, Inc. Sensor, Sensor Pad and Sensor Array for Detecting Infrasonic Acoustic Signals
US20150320323A1 (en) * 2010-06-24 2015-11-12 Cvr Global, Inc. Sensor, sensor pad and sensor array for detecting infrasonic acoustic signals

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6353644B1 (en) * 1998-05-13 2002-03-05 Globespan, Inc. System and method for performing time domain equalization
US20020151795A1 (en) * 2001-03-02 2002-10-17 Yoram Palti Method and apparatus for detecting arterial stenosis
US20050234349A1 (en) * 2004-02-10 2005-10-20 Pravica David W Methods, systems, and computer program products for analyzing cardiovascular sounds using eigen functions
US20050222515A1 (en) * 2004-02-23 2005-10-06 Biosignetics Corporation Cardiovascular sound signature: method, process and format
US20080139951A1 (en) * 2006-12-08 2008-06-12 Cardiac Pacemakers, Inc. Detection of Stenosis
US20120232427A1 (en) * 2010-06-24 2012-09-13 Cvr Global, Inc. Sensor, Sensor Pad and Sensor Array for Detecting Infrasonic Acoustic Signals
US20150320323A1 (en) * 2010-06-24 2015-11-12 Cvr Global, Inc. Sensor, sensor pad and sensor array for detecting infrasonic acoustic signals

Also Published As

Publication number Publication date
WO2017218818A2 (en) 2017-12-21

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