CA2067583A1 - Arrhythmia detector using delta modulated turning point morphology of the ecg wave - Google Patents

Arrhythmia detector using delta modulated turning point morphology of the ecg wave

Info

Publication number
CA2067583A1
CA2067583A1 CA2067583A CA2067583A CA2067583A1 CA 2067583 A1 CA2067583 A1 CA 2067583A1 CA 2067583 A CA2067583 A CA 2067583A CA 2067583 A CA2067583 A CA 2067583A CA 2067583 A1 CA2067583 A1 CA 2067583A1
Authority
CA
Canada
Prior art keywords
signal
slope
line
ecg signal
isoelectric
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2067583A
Other languages
French (fr)
Other versions
CA2067583C (en
Inventor
Jean-Cheui Hsung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cardiac Pacemakers Inc
Original Assignee
Cardiac Pacemakers 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 Cardiac Pacemakers Inc filed Critical Cardiac Pacemakers Inc
Publication of CA2067583A1 publication Critical patent/CA2067583A1/en
Application granted granted Critical
Publication of CA2067583C publication Critical patent/CA2067583C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/362—Heart stimulators
    • A61N1/37—Monitoring; Protecting
    • A61N1/3702—Physiological parameters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346—Analysis of electrocardiograms
    • A61B5/349—Detecting specific parameters of the electrocardiograph cycle
    • A61B5/361—Detecting fibrillation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346—Analysis of electrocardiograms
    • A61B5/349—Detecting specific parameters of the electrocardiograph cycle
    • A61B5/363—Detecting tachycardia or bradycardia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346—Analysis of electrocardiograms
    • A61B5/349—Detecting specific parameters of the electrocardiograph cycle
    • A61B5/364—Detecting abnormal ECG interval, e.g. extrasystoles, ectopic heartbeats

Landscapes

  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Biophysics (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Physiology (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

An arrhythmia detector includes a delta modulator which digitizes the ECG signal and produces a serial digital signal that represents the input ECG signal. A microprocessor classifies the signal as having no slope, positive slope, or negative slope. A
finite state machine model in the microprocessor uses the positive slope, negative slope, or no slope information to determine the number of times an isoelectric line segment is present in the ECG
signal. By accumulating the line-counts or number of line segments over a two-second period, a determination can be made whether the ECG signal has been in isoelectric line less than a threshold. For two out of three 2 second periods, if the percentage of isoelectric time is less than the ventricular fibrillation threshold then a ventricular fibrillation signal can be generated. For ventricular tachycardia verses supraventricular tachycardia discrimination, a second threshold which relates to the average heart rate observed in a linear formula LC(TH) = b - a*(rate)/30 can be used. If the isoelectric line-count is less than the LC(TH), then VT is declared.
The regression coefficient a and b can be found by measuring the line-count and rate pairs in 2 second periods during normal sinus rhythm in periodic basis, for example, 10 data pairs every hour.
The delta modulator uses a comparator which receives the ECG signal and a tracking signal to output a series of binary digits. A
digital-to-analog converter generates the tracking signal.
CA002067583A 1992-02-06 1992-04-29 Arrhythmia detector using delta modulated turning point morphology of the ecg wave Expired - Fee Related CA2067583C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/833,843 1992-02-06
US07/833,843 US5301677A (en) 1992-02-06 1992-02-06 Arrhythmia detector using delta modulated turning point morphology of the ECG wave

Publications (2)

Publication Number Publication Date
CA2067583A1 true CA2067583A1 (en) 1993-08-07
CA2067583C CA2067583C (en) 1996-06-25

Family

ID=25265418

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002067583A Expired - Fee Related CA2067583C (en) 1992-02-06 1992-04-29 Arrhythmia detector using delta modulated turning point morphology of the ecg wave

Country Status (6)

Country Link
US (1) US5301677A (en)
EP (1) EP0554605B1 (en)
JP (1) JP2648543B2 (en)
AT (1) ATE197387T1 (en)
CA (1) CA2067583C (en)
DE (1) DE69231554T2 (en)

Families Citing this family (220)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5430848A (en) * 1992-08-14 1995-07-04 Loral Fairchild Corporation Distributed arbitration with programmable priorities
AU5205493A (en) * 1992-12-01 1994-06-16 Siemens Aktiengesellschaft Cardiac event detection in implantable medical devices
DE19609411C2 (en) * 1996-03-04 1999-11-25 Biotronik Mess & Therapieg Method and device for storing signals in an implantable medical device
US5836982A (en) * 1997-02-19 1998-11-17 Medtronic, Inc. System and method of data compression and non-linear sampling for implantable and battery-powered devices
US6112117A (en) * 1997-05-06 2000-08-29 Cardiac Pacemakers, Inc. Method and apparatus for treating cardiac arrhythmia using electrogram features
US6061592A (en) * 1997-05-07 2000-05-09 Biotronik Mess-Und Therapiegeraete Gmbh & Co. Ingenieurbuero Berlin Device for detecting tachycardia using a counter
US6501990B1 (en) 1999-12-23 2002-12-31 Cardiac Pacemakers, Inc. Extendable and retractable lead having a snap-fit terminal connector
US6463334B1 (en) 1998-11-02 2002-10-08 Cardiac Pacemakers, Inc. Extendable and retractable lead
US6671548B1 (en) * 1999-12-29 2003-12-30 Pacesetter, Inc. Implantable stimulation device and method for discrimination atrial and ventricular arrhythmias
US6480734B1 (en) * 2000-06-30 2002-11-12 Cardiac Science Inc. Cardiac arrhythmia detector using ECG waveform-factor and its irregularity
US7369890B2 (en) * 2000-11-02 2008-05-06 Cardiac Pacemakers, Inc. Technique for discriminating between coordinated and uncoordinated cardiac rhythms
US6689117B2 (en) * 2000-12-18 2004-02-10 Cardiac Pacemakers, Inc. Drug delivery system for implantable medical device
US6656125B2 (en) * 2001-06-01 2003-12-02 Dale Julian Misczynski System and process for analyzing a medical condition of a user
US6823209B2 (en) 2001-10-19 2004-11-23 Medtronic Physio-Control Corp. Electrocardiogram filter
US7248921B2 (en) 2003-06-02 2007-07-24 Cameron Health, Inc. Method and devices for performing cardiac waveform appraisal
US7162299B1 (en) * 2002-06-05 2007-01-09 Pacesetter, Inc. ICD with VF prevention
US7627373B2 (en) 2002-11-30 2009-12-01 Cardiac Pacemakers, Inc. Method and apparatus for cell and electrical therapy of living tissue
US20050080348A1 (en) * 2003-09-18 2005-04-14 Stahmann Jeffrey E. Medical event logbook system and method
US6985768B2 (en) * 2003-02-28 2006-01-10 Medtronic, Inc. Physiological event detection
US7392081B2 (en) * 2003-02-28 2008-06-24 Cardiac Pacemakers, Inc. Subcutaneous cardiac stimulator employing post-shock transthoracic asystole prevention pacing
US7389138B2 (en) * 2003-04-11 2008-06-17 Cardiac Pacemakers, Inc. Electrode placement determination for subcutaneous cardiac monitoring and therapy
US7493175B2 (en) 2003-04-11 2009-02-17 Cardiac Pacemakers, Inc. Subcutaneous lead with tined fixation
US8116868B2 (en) 2003-04-11 2012-02-14 Cardiac Pacemakers, Inc. Implantable device with cardiac event audio playback
US7218966B2 (en) * 2003-04-11 2007-05-15 Cardiac Pacemakers, Inc. Multi-parameter arrhythmia discrimination
US7349742B2 (en) * 2003-04-11 2008-03-25 Cardiac Pacemakers, Inc. Expandable fixation elements for subcutaneous electrodes
US7499758B2 (en) * 2003-04-11 2009-03-03 Cardiac Pacemakers, Inc. Helical fixation elements for subcutaneous electrodes
US20040204735A1 (en) * 2003-04-11 2004-10-14 Shiroff Jason Alan Subcutaneous dissection tool incorporating pharmacological agent delivery
US7570997B2 (en) 2003-04-11 2009-08-04 Cardiac Pacemakers, Inc. Subcutaneous cardiac rhythm management with asystole prevention therapy
US20050004615A1 (en) * 2003-04-11 2005-01-06 Sanders Richard S. Reconfigurable implantable cardiac monitoring and therapy delivery device
US7555335B2 (en) * 2003-04-11 2009-06-30 Cardiac Pacemakers, Inc. Biopotential signal source separation using source impedances
US20040230272A1 (en) * 2003-04-11 2004-11-18 Cates Adam W. Subcutaneous lead with temporary pharmacological agents
US7979122B2 (en) * 2003-04-11 2011-07-12 Cardiac Pacemakers, Inc. Implantable sudden cardiac death prevention device with reduced programmable feature set
US7117035B2 (en) 2003-04-11 2006-10-03 Cardiac Pacemakers, Inc. Subcutaneous cardiac stimulation system with patient activity sensing
US20040215240A1 (en) * 2003-04-11 2004-10-28 Lovett Eric G. Reconfigurable subcutaneous cardiac device
US7566318B2 (en) * 2003-04-11 2009-07-28 Cardiac Pacemakers, Inc. Ultrasonic subcutaneous dissection tool incorporating fluid delivery
US7702399B2 (en) * 2003-04-11 2010-04-20 Cardiac Pacemakers, Inc. Subcutaneous electrode and lead with phoresis based pharmacological agent delivery
US20040220628A1 (en) * 2003-04-11 2004-11-04 Wagner Darrell Orvin Subcutaneous defibrillation timing correlated with induced skeletal muscle contraction
US7047071B2 (en) 2003-04-11 2006-05-16 Cardiac Pacemakers, Inc. Patient stratification for implantable subcutaneous cardiac monitoring and therapy
US20040204734A1 (en) * 2003-04-11 2004-10-14 Wagner Darrell Orvin Tunneling tool with subcutaneous transdermal illumination
US20040220626A1 (en) * 2003-04-11 2004-11-04 Wagner Darrell Orvin Distributed subcutaneous defibrillation system
US7302294B2 (en) * 2003-04-11 2007-11-27 Cardiac Pacemakers, Inc. Subcutaneous cardiac sensing and stimulation system employing blood sensor
US7499750B2 (en) * 2003-04-11 2009-03-03 Cardiac Pacemakers, Inc. Noise canceling cardiac electrodes
US7236819B2 (en) 2003-04-11 2007-06-26 Cardiac Pacemakers, Inc. Separation of a subcutaneous cardiac signal from a plurality of composite signals
US7529592B2 (en) 2003-04-11 2009-05-05 Cardiac Pacemakers, Inc. Subcutaneous electrode and lead with temporary pharmacological agents
US7865233B2 (en) 2003-04-11 2011-01-04 Cardiac Pacemakers, Inc. Subcutaneous cardiac signal discrimination employing non-electrophysiologic signal
US7477932B2 (en) * 2003-05-28 2009-01-13 Cardiac Pacemakers, Inc. Cardiac waveform template creation, maintenance and use
US8606356B2 (en) 2003-09-18 2013-12-10 Cardiac Pacemakers, Inc. Autonomic arousal detection system and method
US7468040B2 (en) * 2003-09-18 2008-12-23 Cardiac Pacemakers, Inc. Methods and systems for implantably monitoring external breathing therapy
US8251061B2 (en) * 2003-09-18 2012-08-28 Cardiac Pacemakers, Inc. Methods and systems for control of gas therapy
US7610094B2 (en) * 2003-09-18 2009-10-27 Cardiac Pacemakers, Inc. Synergistic use of medical devices for detecting medical disorders
US20050142070A1 (en) * 2003-09-18 2005-06-30 Hartley Jesse W. Methods and systems for assessing pulmonary disease with drug therapy control
US7967756B2 (en) * 2003-09-18 2011-06-28 Cardiac Pacemakers, Inc. Respiratory therapy control based on cardiac cycle
US7591265B2 (en) 2003-09-18 2009-09-22 Cardiac Pacemakers, Inc. Coordinated use of respiratory and cardiac therapies for sleep disordered breathing
US20050107838A1 (en) * 2003-09-18 2005-05-19 Lovett Eric G. Subcutaneous cardiac rhythm management with disordered breathing detection and treatment
US7757690B2 (en) 2003-09-18 2010-07-20 Cardiac Pacemakers, Inc. System and method for moderating a therapy delivered during sleep using physiologic data acquired during non-sleep
US7510531B2 (en) 2003-09-18 2009-03-31 Cardiac Pacemakers, Inc. System and method for discrimination of central and obstructive disordered breathing events
US7887493B2 (en) 2003-09-18 2011-02-15 Cardiac Pacemakers, Inc. Implantable device employing movement sensing for detecting sleep-related disorders
US7668591B2 (en) * 2003-09-18 2010-02-23 Cardiac Pacemakers, Inc. Automatic activation of medical processes
US7575553B2 (en) * 2003-09-18 2009-08-18 Cardiac Pacemakers, Inc. Methods and systems for assessing pulmonary disease
US7680537B2 (en) * 2003-08-18 2010-03-16 Cardiac Pacemakers, Inc. Therapy triggered by prediction of disordered breathing
US7662101B2 (en) * 2003-09-18 2010-02-16 Cardiac Pacemakers, Inc. Therapy control based on cardiopulmonary status
US7469697B2 (en) * 2003-09-18 2008-12-30 Cardiac Pacemakers, Inc. Feedback system and method for sleep disordered breathing therapy
US7720541B2 (en) * 2003-08-18 2010-05-18 Cardiac Pacemakers, Inc. Adaptive therapy for disordered breathing
US7678061B2 (en) * 2003-09-18 2010-03-16 Cardiac Pacemakers, Inc. System and method for characterizing patient respiration
ATE413902T1 (en) 2003-08-18 2008-11-15 Cardiac Pacemakers Inc PATIENT MONITORING SYSTEM
US8192376B2 (en) 2003-08-18 2012-06-05 Cardiac Pacemakers, Inc. Sleep state classification
US7396333B2 (en) * 2003-08-18 2008-07-08 Cardiac Pacemakers, Inc. Prediction of disordered breathing
US7572225B2 (en) * 2003-09-18 2009-08-11 Cardiac Pacemakers, Inc. Sleep logbook
US20060247693A1 (en) 2005-04-28 2006-11-02 Yanting Dong Non-captured intrinsic discrimination in cardiac pacing response classification
US7319900B2 (en) * 2003-12-11 2008-01-15 Cardiac Pacemakers, Inc. Cardiac response classification using multiple classification windows
US7774064B2 (en) 2003-12-12 2010-08-10 Cardiac Pacemakers, Inc. Cardiac response classification using retriggerable classification windows
US8521284B2 (en) 2003-12-12 2013-08-27 Cardiac Pacemakers, Inc. Cardiac response classification using multisite sensing and pacing
US20050215884A1 (en) * 2004-02-27 2005-09-29 Greicius Michael D Evaluation of Alzheimer's disease using an independent component analysis of an individual's resting-state functional MRI
US7706866B2 (en) * 2004-06-24 2010-04-27 Cardiac Pacemakers, Inc. Automatic orientation determination for ECG measurements using multiple electrodes
US7974685B2 (en) * 2004-07-22 2011-07-05 Cardiac Pacemakers, Inc. Systems, devices, and methods for tachyarrhythmia discrimination or therapy decisions
US7797036B2 (en) * 2004-11-30 2010-09-14 Cardiac Pacemakers, Inc. Cardiac activation sequence monitoring for ischemia detection
US7917196B2 (en) * 2005-05-09 2011-03-29 Cardiac Pacemakers, Inc. Arrhythmia discrimination using electrocardiograms sensed from multiple implanted electrodes
US7805185B2 (en) * 2005-05-09 2010-09-28 Cardiac Pacemakers, In. Posture monitoring using cardiac activation sequences
US7647108B2 (en) * 2004-09-30 2010-01-12 Cardiac Pacemakers, Inc. Methods and systems for selection of cardiac pacing electrode configurations
US7890159B2 (en) * 2004-09-30 2011-02-15 Cardiac Pacemakers, Inc. Cardiac activation sequence monitoring and tracking
US7509170B2 (en) * 2005-05-09 2009-03-24 Cardiac Pacemakers, Inc. Automatic capture verification using electrocardiograms sensed from multiple implanted electrodes
US7457664B2 (en) 2005-05-09 2008-11-25 Cardiac Pacemakers, Inc. Closed loop cardiac resynchronization therapy using cardiac activation sequence information
US8818504B2 (en) 2004-12-16 2014-08-26 Cardiac Pacemakers Inc Leadless cardiac stimulation device employing distributed logic
US7981065B2 (en) 2004-12-20 2011-07-19 Cardiac Pacemakers, Inc. Lead electrode incorporating extracellular matrix
US8060219B2 (en) 2004-12-20 2011-11-15 Cardiac Pacemakers, Inc. Epicardial patch including isolated extracellular matrix with pacing electrodes
US7996072B2 (en) * 2004-12-21 2011-08-09 Cardiac Pacemakers, Inc. Positionally adaptable implantable cardiac device
JP2006185060A (en) * 2004-12-27 2006-07-13 Fujitsu Ltd Method for inputting password
US7680534B2 (en) * 2005-02-28 2010-03-16 Cardiac Pacemakers, Inc. Implantable cardiac device with dyspnea measurement
US7392086B2 (en) 2005-04-26 2008-06-24 Cardiac Pacemakers, Inc. Implantable cardiac device and method for reduced phrenic nerve stimulation
US7499751B2 (en) * 2005-04-28 2009-03-03 Cardiac Pacemakers, Inc. Cardiac signal template generation using waveform clustering
US8391990B2 (en) 2005-05-18 2013-03-05 Cardiac Pacemakers, Inc. Modular antitachyarrhythmia therapy system
US20070049975A1 (en) * 2005-09-01 2007-03-01 Cates Adam W Active can with dedicated defibrillation and sensing electrodes
US20070055115A1 (en) * 2005-09-08 2007-03-08 Jonathan Kwok Characterization of sleep disorders using composite patient data
US7775983B2 (en) * 2005-09-16 2010-08-17 Cardiac Pacemakers, Inc. Rapid shallow breathing detection for use in congestive heart failure status determination
US20070118180A1 (en) 2005-11-18 2007-05-24 Quan Ni Cardiac resynchronization therapy for improved hemodynamics based on disordered breathing detection
US7766840B2 (en) 2005-12-01 2010-08-03 Cardiac Pacemakers, Inc. Method and system for heart failure status evaluation based on a disordered breathing index
US20070135847A1 (en) * 2005-12-12 2007-06-14 Kenknight Bruce H Subcutaneous defibrillation system and method using same
US7662105B2 (en) 2005-12-14 2010-02-16 Cardiac Pacemakers, Inc. Systems and methods for determining respiration metrics
US7653431B2 (en) * 2005-12-20 2010-01-26 Cardiac Pacemakers, Inc. Arrhythmia discrimination based on determination of rate dependency
US7761158B2 (en) * 2005-12-20 2010-07-20 Cardiac Pacemakers, Inc. Detection of heart failure decompensation based on cumulative changes in sensor signals
US7819816B2 (en) * 2006-03-29 2010-10-26 Cardiac Pacemakers, Inc. Periodic disordered breathing detection
US20070260151A1 (en) * 2006-05-03 2007-11-08 Clifford Gari D Method and device for filtering, segmenting, compressing and classifying oscillatory signals
US20080004665A1 (en) * 2006-06-29 2008-01-03 Mccabe Aaron R Determination of cardiac pacing parameters based on non-localized sensing
US8527048B2 (en) * 2006-06-29 2013-09-03 Cardiac Pacemakers, Inc. Local and non-local sensing for cardiac pacing
US7623913B2 (en) * 2006-08-01 2009-11-24 Cameron Health, Inc. Implantable medical devices using heuristic filtering in cardiac event detection
US7580741B2 (en) * 2006-08-18 2009-08-25 Cardiac Pacemakers, Inc. Method and device for determination of arrhythmia rate zone thresholds using a probability function
US8948867B2 (en) 2006-09-14 2015-02-03 Cardiac Pacemakers, Inc. Capture detection with cross chamber backup pacing
US8209013B2 (en) 2006-09-14 2012-06-26 Cardiac Pacemakers, Inc. Therapeutic electrical stimulation that avoids undesirable activation
US8712507B2 (en) * 2006-09-14 2014-04-29 Cardiac Pacemakers, Inc. Systems and methods for arranging and labeling cardiac episodes
US7941208B2 (en) * 2006-11-29 2011-05-10 Cardiac Pacemakers, Inc. Therapy delivery for identified tachyarrhythmia episode types
US20080228093A1 (en) * 2007-03-13 2008-09-18 Yanting Dong Systems and methods for enhancing cardiac signal features used in morphology discrimination
US8052611B2 (en) 2007-03-14 2011-11-08 Cardiac Pacemakers, Inc. Method and apparatus for management of heart failure hospitalization
US8265736B2 (en) 2007-08-07 2012-09-11 Cardiac Pacemakers, Inc. Method and apparatus to perform electrode combination selection
US9037239B2 (en) 2007-08-07 2015-05-19 Cardiac Pacemakers, Inc. Method and apparatus to perform electrode combination selection
WO2009036348A1 (en) 2007-09-14 2009-03-19 Corventis, Inc. Medical device automatic start-up upon contact to patient tissue
US20090076343A1 (en) 2007-09-14 2009-03-19 Corventis, Inc. Energy Management for Adherent Patient Monitor
EP2194864B1 (en) 2007-09-14 2018-08-29 Medtronic Monitoring, Inc. System and methods for wireless body fluid monitoring
WO2009036306A1 (en) 2007-09-14 2009-03-19 Corventis, Inc. Adherent cardiac monitor with advanced sensing capabilities
EP2200512A1 (en) 2007-09-14 2010-06-30 Corventis, Inc. Adherent device for respiratory monitoring and sleep disordered breathing
WO2009036256A1 (en) 2007-09-14 2009-03-19 Corventis, Inc. Injectable physiological monitoring system
WO2009036313A1 (en) 2007-09-14 2009-03-19 Corventis, Inc. Adherent device with multiple physiological sensors
US9079033B2 (en) * 2008-01-22 2015-07-14 Cardiac Pacemakers, Inc. Respiration as a trigger for therapy optimization
JP5276119B2 (en) 2008-02-14 2013-08-28 カーディアック ペースメイカーズ， インコーポレイテッド Method and apparatus for detection of phrenic stimulation
EP2257216B1 (en) 2008-03-12 2021-04-28 Medtronic Monitoring, Inc. Heart failure decompensation prediction based on cardiac rhythm
US8255052B2 (en) * 2008-04-02 2012-08-28 Cardiac Pacemakers, Inc. Temperature based systems and methods for tachycardia discrimination and therapy
US8412325B2 (en) * 2008-04-08 2013-04-02 Cardiac Pacemakers, Inc. High-energy anti-tachycardia therapy
US8412317B2 (en) 2008-04-18 2013-04-02 Corventis, Inc. Method and apparatus to measure bioelectric impedance of patient tissue
US8457706B2 (en) * 2008-05-16 2013-06-04 Covidien Lp Estimation of a physiological parameter using a neural network
US20110009760A1 (en) * 2009-07-10 2011-01-13 Yi Zhang Hospital Readmission Alert for Heart Failure Patients
US8790259B2 (en) 2009-10-22 2014-07-29 Corventis, Inc. Method and apparatus for remote detection and monitoring of functional chronotropic incompetence
US9451897B2 (en) 2009-12-14 2016-09-27 Medtronic Monitoring, Inc. Body adherent patch with electronics for physiologic monitoring
US8965498B2 (en) 2010-04-05 2015-02-24 Corventis, Inc. Method and apparatus for personalized physiologic parameters
US8825148B2 (en) 2012-01-25 2014-09-02 Siemens Medical Solutions Usa, Inc. System for monitoring and diagnosis of cardiac electrogram signals using multi-dimensional analysis
JP6192268B2 (en) * 2012-08-10 2017-09-06 フクダ電子株式会社 Electrocardiograph and electrocardiogram waveform printing method
CN105451648A (en) 2013-08-05 2016-03-30 心脏起搏器股份公司 System and method for detecting worsening of heart failure based on rapid shallow breathing index
EP3021745B1 (en) 2013-10-30 2019-04-10 St. Jude Medical, Cardiology Division, Inc. Cardiac mapping system and method for voltage-based evaluation of electrograms
ES2661718T3 (en) 2014-01-10 2018-04-03 Cardiac Pacemakers, Inc. Methods and systems to improve communication between medical devices
AU2015204701B2 (en) 2014-01-10 2018-03-15 Cardiac Pacemakers, Inc. Systems and methods for detecting cardiac arrhythmias
WO2016033197A2 (en) 2014-08-28 2016-03-03 Cardiac Pacemakers, Inc. Medical device with triggered blanking period
US10220213B2 (en) 2015-02-06 2019-03-05 Cardiac Pacemakers, Inc. Systems and methods for safe delivery of electrical stimulation therapy
US9669230B2 (en) 2015-02-06 2017-06-06 Cardiac Pacemakers, Inc. Systems and methods for treating cardiac arrhythmias
WO2016130477A2 (en) 2015-02-09 2016-08-18 Cardiac Pacemakers, Inc. Implantable medical device with radiopaque id tag
EP3258843A4 (en) * 2015-02-19 2018-09-26 CardioInsight Technologies, Inc. Signal characterization for detecting and/or analyzing driver activity
WO2016141046A1 (en) 2015-03-04 2016-09-09 Cardiac Pacemakers, Inc. Systems and methods for treating cardiac arrhythmias
US10050700B2 (en) 2015-03-18 2018-08-14 Cardiac Pacemakers, Inc. Communications in a medical device system with temporal optimization
US10213610B2 (en) 2015-03-18 2019-02-26 Cardiac Pacemakers, Inc. Communications in a medical device system with link quality assessment
CN108136186B (en) 2015-08-20 2021-09-17 心脏起搏器股份公司 System and method for communication between medical devices
CN108136187B (en) 2015-08-20 2021-06-29 心脏起搏器股份公司 System and method for communication between medical devices
US9968787B2 (en) 2015-08-27 2018-05-15 Cardiac Pacemakers, Inc. Spatial configuration of a motion sensor in an implantable medical device
US9956414B2 (en) 2015-08-27 2018-05-01 Cardiac Pacemakers, Inc. Temporal configuration of a motion sensor in an implantable medical device
US10226631B2 (en) 2015-08-28 2019-03-12 Cardiac Pacemakers, Inc. Systems and methods for infarct detection
CN108136189B (en) 2015-08-28 2021-10-15 心脏起搏器股份公司 System for behavioral response signal detection and therapy delivery
WO2017040115A1 (en) 2015-08-28 2017-03-09 Cardiac Pacemakers, Inc. System for detecting tamponade
WO2017044389A1 (en) 2015-09-11 2017-03-16 Cardiac Pacemakers, Inc. Arrhythmia detection and confirmation
US10065041B2 (en) 2015-10-08 2018-09-04 Cardiac Pacemakers, Inc. Devices and methods for adjusting pacing rates in an implantable medical device
JP6608063B2 (en) 2015-12-17 2019-11-20 カーディアック ペースメイカーズ， インコーポレイテッド Implantable medical device
US10905886B2 (en) 2015-12-28 2021-02-02 Cardiac Pacemakers, Inc. Implantable medical device for deployment across the atrioventricular septum
US10583303B2 (en) 2016-01-19 2020-03-10 Cardiac Pacemakers, Inc. Devices and methods for wirelessly recharging a rechargeable battery of an implantable medical device
WO2017136548A1 (en) 2016-02-04 2017-08-10 Cardiac Pacemakers, Inc. Delivery system with force sensor for leadless cardiac device
CN108883286B (en) 2016-03-31 2021-12-07 心脏起搏器股份公司 Implantable medical device with rechargeable battery
US10668294B2 (en) 2016-05-10 2020-06-02 Cardiac Pacemakers, Inc. Leadless cardiac pacemaker configured for over the wire delivery
US10328272B2 (en) 2016-05-10 2019-06-25 Cardiac Pacemakers, Inc. Retrievability for implantable medical devices
CN109414582B (en) 2016-06-27 2022-10-28 心脏起搏器股份公司 Cardiac therapy system for resynchronization pacing management using subcutaneous sensing of P-waves
US11207527B2 (en) 2016-07-06 2021-12-28 Cardiac Pacemakers, Inc. Method and system for determining an atrial contraction timing fiducial in a leadless cardiac pacemaker system
WO2018009392A1 (en) 2016-07-07 2018-01-11 Cardiac Pacemakers, Inc. Leadless pacemaker using pressure measurements for pacing capture verification
CN109475743B (en) 2016-07-20 2022-09-02 心脏起搏器股份公司 System for utilizing atrial contraction timing references in a leadless cardiac pacemaker system
EP3500342B1 (en) 2016-08-19 2020-05-13 Cardiac Pacemakers, Inc. Trans-septal implantable medical device
EP3503970B1 (en) 2016-08-24 2023-01-04 Cardiac Pacemakers, Inc. Cardiac resynchronization using fusion promotion for timing management
WO2018039335A1 (en) 2016-08-24 2018-03-01 Cardiac Pacemakers, Inc. Integrated multi-device cardiac resynchronization therapy using p-wave to pace timing
US10758737B2 (en) 2016-09-21 2020-09-01 Cardiac Pacemakers, Inc. Using sensor data from an intracardially implanted medical device to influence operation of an extracardially implantable cardioverter
WO2018057626A1 (en) 2016-09-21 2018-03-29 Cardiac Pacemakers, Inc. Implantable cardiac monitor
CN109803720B (en) 2016-09-21 2023-08-15 心脏起搏器股份公司 Leadless stimulation device having a housing containing its internal components and functioning as a terminal for a battery case and an internal battery
EP3532159B1 (en) 2016-10-27 2021-12-22 Cardiac Pacemakers, Inc. Implantable medical device delivery system with integrated sensor
WO2018081275A1 (en) 2016-10-27 2018-05-03 Cardiac Pacemakers, Inc. Multi-device cardiac resynchronization therapy with timing enhancements
WO2018081133A1 (en) 2016-10-27 2018-05-03 Cardiac Pacemakers, Inc. Implantable medical device having a sense channel with performance adjustment
US10413733B2 (en) 2016-10-27 2019-09-17 Cardiac Pacemakers, Inc. Implantable medical device with gyroscope
EP3532160B1 (en) 2016-10-27 2023-01-25 Cardiac Pacemakers, Inc. Separate device in managing the pace pulse energy of a cardiac pacemaker
AU2017350759B2 (en) 2016-10-27 2019-10-17 Cardiac Pacemakers, Inc. Implantable medical device with pressure sensor
EP3532158B1 (en) 2016-10-31 2022-12-14 Cardiac Pacemakers, Inc. Systems for activity level pacing
US10617874B2 (en) 2016-10-31 2020-04-14 Cardiac Pacemakers, Inc. Systems and methods for activity level pacing
US10583301B2 (en) 2016-11-08 2020-03-10 Cardiac Pacemakers, Inc. Implantable medical device for atrial deployment
CN109952129B (en) 2016-11-09 2024-02-20 心脏起搏器股份公司 System, device and method for setting cardiac pacing pulse parameters for a cardiac pacing device
US10881869B2 (en) 2016-11-21 2021-01-05 Cardiac Pacemakers, Inc. Wireless re-charge of an implantable medical device
CN109996585B (en) 2016-11-21 2023-06-13 心脏起搏器股份公司 Implantable medical device with magnetically permeable housing and induction coil disposed around the housing
CN109963618B (en) 2016-11-21 2023-07-04 心脏起搏器股份公司 Leadless cardiac pacemaker with multi-mode communication
US10639486B2 (en) 2016-11-21 2020-05-05 Cardiac Pacemakers, Inc. Implantable medical device with recharge coil
EP3541471B1 (en) 2016-11-21 2021-01-20 Cardiac Pacemakers, Inc. Leadless cardiac pacemaker providing cardiac resynchronization therapy
US11207532B2 (en) 2017-01-04 2021-12-28 Cardiac Pacemakers, Inc. Dynamic sensing updates using postural input in a multiple device cardiac rhythm management system
EP3573708B1 (en) 2017-01-26 2021-03-10 Cardiac Pacemakers, Inc. Leadless implantable device with detachable fixation
WO2018140623A1 (en) 2017-01-26 2018-08-02 Cardiac Pacemakers, Inc. Leadless device with overmolded components
JP7000438B2 (en) 2017-01-26 2022-01-19 カーディアック ペースメイカーズ， インコーポレイテッド Human device communication with redundant message transmission
WO2018166136A1 (en) * 2017-03-14 2018-09-20 华为技术有限公司 Method and apparatus for processing waveform signal
JP6953614B2 (en) 2017-04-03 2021-10-27 カーディアック ペースメイカーズ， インコーポレイテッド Cardiac pacemaker with pacing pulse energy adjustment based on sensed heart rate
US10905872B2 (en) 2017-04-03 2021-02-02 Cardiac Pacemakers, Inc. Implantable medical device with a movable electrode biased toward an extended position
WO2019036600A1 (en) 2017-08-18 2019-02-21 Cardiac Pacemakers, Inc. Implantable medical device with pressure sensor
US10918875B2 (en) 2017-08-18 2021-02-16 Cardiac Pacemakers, Inc. Implantable medical device with a flux concentrator and a receiving coil disposed about the flux concentrator
US11235163B2 (en) 2017-09-20 2022-02-01 Cardiac Pacemakers, Inc. Implantable medical device with multiple modes of operation
US11185703B2 (en) 2017-11-07 2021-11-30 Cardiac Pacemakers, Inc. Leadless cardiac pacemaker for bundle of his pacing
WO2019108545A1 (en) 2017-12-01 2019-06-06 Cardiac Pacemakers, Inc. Methods and systems for detecting atrial contraction timing fiducials during ventricular filling from a ventricularly implanted leadless cardiac pacemaker
WO2019108482A1 (en) 2017-12-01 2019-06-06 Cardiac Pacemakers, Inc. Methods and systems for detecting atrial contraction timing fiducials and determining a cardiac interval from a ventricularly implanted leadless cardiac pacemaker
EP3717059A1 (en) 2017-12-01 2020-10-07 Cardiac Pacemakers, Inc. Methods and systems for detecting atrial contraction timing fiducials within a search window from a ventricularly implanted leadless cardiac pacemaker
US11813463B2 (en) 2017-12-01 2023-11-14 Cardiac Pacemakers, Inc. Leadless cardiac pacemaker with reversionary behavior
CN111556773A (en) 2018-01-04 2020-08-18 心脏起搏器股份公司 Dual chamber pacing without beat-to-beat communication
US11529523B2 (en) 2018-01-04 2022-12-20 Cardiac Pacemakers, Inc. Handheld bridge device for providing a communication bridge between an implanted medical device and a smartphone
US11058880B2 (en) 2018-03-23 2021-07-13 Medtronic, Inc. VFA cardiac therapy for tachycardia
WO2019183512A1 (en) 2018-03-23 2019-09-26 Medtronic, Inc. Vfa cardiac resynchronization therapy
WO2019183507A1 (en) 2018-03-23 2019-09-26 Medtronic, Inc. Av synchronous vfa cardiac therapy
US11154233B2 (en) 2018-06-21 2021-10-26 Mayo Foundation For Medical Education And Research Apparatus and method for differentiating wide complex heart beats
CN112770807A (en) 2018-09-26 2021-05-07 美敦力公司 Capture in atrial-to-ventricular cardiac therapy
US11951313B2 (en) 2018-11-17 2024-04-09 Medtronic, Inc. VFA delivery systems and methods
CN109620152B (en) * 2018-12-16 2021-09-14 北京工业大学 MutifacolLoss-densenert-based electrocardiosignal classification method
US11679265B2 (en) 2019-02-14 2023-06-20 Medtronic, Inc. Lead-in-lead systems and methods for cardiac therapy
US11697025B2 (en) 2019-03-29 2023-07-11 Medtronic, Inc. Cardiac conduction system capture
US11213676B2 (en) 2019-04-01 2022-01-04 Medtronic, Inc. Delivery systems for VfA cardiac therapy
US11712188B2 (en) 2019-05-07 2023-08-01 Medtronic, Inc. Posterior left bundle branch engagement
US11305127B2 (en) 2019-08-26 2022-04-19 Medtronic Inc. VfA delivery and implant region detection
US11813466B2 (en) 2020-01-27 2023-11-14 Medtronic, Inc. Atrioventricular nodal stimulation
US11911168B2 (en) 2020-04-03 2024-02-27 Medtronic, Inc. Cardiac conduction system therapy benefit determination
US11813464B2 (en) 2020-07-31 2023-11-14 Medtronic, Inc. Cardiac conduction system evaluation
CN113647958B (en) * 2021-07-20 2023-08-29 广州大学 ECG signal detection circuit suitable for wearable equipment

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1538522A (en) * 1975-09-30 1979-01-17 Mirowski M Apparatus for detecting the state of a heart and for cardioverting a malfunctioning heart
GB2070871B (en) * 1980-02-29 1984-08-30 Anderson J Pattern recognition
US4453551A (en) * 1981-02-25 1984-06-12 John Anderson Apparatus for pattern recognition of ECG signals for detecting fibrillation
US4509529A (en) * 1982-06-30 1985-04-09 Telectronics Pty. Ltd. Physiological event recognition techniques for use with a delta modulator
US4567883A (en) * 1983-06-09 1986-02-04 Mieczyslaw Mirowski Data compression of ECG data using delta modulation
US4552154A (en) * 1984-03-12 1985-11-12 Medtronic, Inc. Waveform morphology discriminator and method
US4589420A (en) * 1984-07-13 1986-05-20 Spacelabs Inc. Method and apparatus for ECG rhythm analysis
US4679144A (en) * 1984-08-21 1987-07-07 Q-Med, Inc. Cardiac signal real time monitor and method of analysis
US4925443A (en) * 1987-02-27 1990-05-15 Heilman Marlin S Biocompatible ventricular assist and arrhythmia control device
EP0402508B2 (en) * 1989-06-15 2002-10-23 St. Jude Medical AB Means for detecting a series of abnormal events in an electrical signal, especially the depolarisation signal of a heart
US5014284A (en) * 1989-06-30 1991-05-07 Cardiac Telecom Corporation Discrete slope delta modulation with recovery means

Also Published As

Publication number Publication date
DE69231554D1 (en) 2000-12-14
EP0554605B1 (en) 2000-11-08
ATE197387T1 (en) 2000-11-11
US5301677A (en) 1994-04-12
EP0554605A1 (en) 1993-08-11
CA2067583C (en) 1996-06-25
JP2648543B2 (en) 1997-09-03
DE69231554T2 (en) 2001-06-28
JPH05285115A (en) 1993-11-02

Similar Documents

Publication Publication Date Title
CA2067583A1 (en) Arrhythmia detector using delta modulated turning point morphology of the ecg wave
US7392090B2 (en) Data logging system for implantable medical device
US4223678A (en) Arrhythmia recorder for use with an implantable defibrillator
Bailey et al. Recommendations for standardization and specifications in automated electrocardiography: bandwidth and digital signal processing. A report for health professionals by an ad hoc writing group of the Committee on Electrocardiography and Cardiac Electrophysiology of the Council on Clinical Cardiology, American Heart Association.
LIU et al. Atrial infarction of the heart
AU5147500A (en) System providing ventricular pacing and biventricular coordination
Shusterman et al. Enhancing the precision of ECG baseline correction: selective filtering and removal of residual error
GB1461941A (en) Monitoring cardiac rhythm
NO167514C (en) PROCEDURE FOR GROUP TRANSMISSION POLYMERIZATION FOR THE PREPARATION OF POLYMERS CONTAINING AT LEAST ONE ACTIVE END GROUP AND CAN BE RE-POLYMERIZED IN THE PRESENT OF MONOMER (S) AND CO-CATALYST.
US4509529A (en) Physiological event recognition techniques for use with a delta modulator
DE2964194D1 (en) Process for the catalytic preparation of polymers or copolymers of alpha-olefins having a high isotacticity index, and composition based on titanium chloride suitable as component of the catalytic systems used in this process
Koyrakh et al. Wavelet transform based algorithms for EGM morphology discrimination for implantable ICDs
GB2083916A (en) Implantable automatic defibrillator
Bertinelli et al. Data compression applied to dynamic electrocardiography
Bussmann et al. Online analysis of ecg arrhythmias with a digital computer
EP0088562A3 (en) Polymerisation catalyst
El-Sherief et al. Clinical evaluation of ECG data compression techniques for ambulatory recording
Stear Reproducing probability density classes on Lie groups with application to discrete-time filtering(Corresp.)
Ward Unusual capture phenomena during interaction of dissociated sinus and junctional rhythms: spontaneous expression of intranodal duality and gap phenomenon
Oreto et al. Double ventricular parasystole with modulation and intermittency
ZHAROVSKII et al. Nonlinear method of analyzing electroencephalograms
Kailath Recursive limited memory filtering and scattering theory(Corresp.)
Satullo et al. Intermittent sinus bigeminy as an expression of sinus parasystole: A case report
MIRONOV et al. Optimal filtering of time-quantized continuous processes
Noguchi et al. Frequency component of fetal heart rate with integral function method

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed