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7620448 |
Methods and devices for monitoring myocardial mechanical stability
Embodiments of the present invention relate to implantable systems, and methods for use therewith, for monitoring myocardial mechanical stability based on a signal that is indicative of mechanical...
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7601124 |
Complexity-based dynamical assay for assessing the toxicity and efficacy of pharmaceutical and other therapeutic interventions
In a subject undergoing therapeutic intervention, efficacy of the therapeutic intervention is assessed based on a series of physiologic data associated with the subject. The series of physiologic...
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7593766 |
Detector for atrial flutter and atrial fibrillation
A detector for atrial fibrillation and/or atrial flutter comprises an atrial input for receiving an atrial signal representing an intraatrial electrogram or a time course of an intraatrial...
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7582061 |
Method and apparatus for morphology-based arrhythmia classification using cardiac and other physiological signals
A tachyarrhythmia detection and classification system classifies tachyarrhythmias based on an analysis of morphological features of a cardiac signal enhanced by using one or more physiological...
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7580741 |
Method and device for determination of arrhythmia rate zone thresholds using a probability function
A probability function for heart rate is determined using collected and measured heart rate values. One or more heart rate probability values are selected. Thresholds for arrhythmia rate zones are...
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7580740 |
Atrial tachyarrhythmia detection using selected atrial intervals
Methods and systems are directed to detecting atrial tachyarrhythmia. A plurality of A-A intervals is detected. The detected A-A intervals are selected and used to detect atrial tachyarrhythmia....
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7574371 |
Medical diagnosis management system
A computerized medical diagnosis management system includes a central computer system comprising a data processor; at least one data interface operatively coupled to the data processor and...
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7570990 |
Detector for atrial fibrillation and flutter
Atrial fibrillation or flutter detector having impedance unit, with measurement input, connected to atrial electrode line having electrode for unipolar measurement of atrium impedance and...
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7567838 |
Method for sensing cardiac contractile function using a lead insertable motion sensor
Systems and methods for detecting and measuring cardiac contractile function of a heart using an acceleration sensor unit inserted within the heart, such as within a vein of the cardiac wall are...
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7558623 |
Means and method for the detection of cardiac events
Disclosed is a system for the detection of cardiac events that includes an implanted device called a cardiosaver, a physician's programmer and an external alarm system. The system is designed to...
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7548783 |
Implantable cardiac stimulation device having a system for providing atrial therapy based on circadian variations and method
An implantable cardiac stimulation device selects an arrhythmia therapy based upon the time of day. The device comprises an arrhythmia detector that detects an accelerated arrhythmia of a heart,...
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7539536 |
Cardiac rhythm management systems and methods using multiple morphology templates for discriminating between rhythms
This document describes systems, devices, and methods that use multiple morphology templates for discriminating between rhythms, such as supraventricular tachyarrhythmias (SVTs) and ventricular...
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7537569 |
Method and apparatus for detection of tachyarrhythmia using cycle lengths
A multi-layer method for detecting atrial arrhythmias using ventricular cycle length information that includes performing a base layer algorithm for detecting the onset and offset of an atrial...
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7529583 |
Therapeutic device and method using feedback from implantable pressure sensor
Devices and methods to reduce the incidence of both false positive and false negative detection of rhythm anomalies. Implantable devices that measure vascular pressure, vascular blood flow, tissue...
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7529581 |
Method and system for characterizing a representative cardiac beat using multiple templates
Providing a method and system for characterizing one beat of a patient's supraventricular rhythm. A plurality of templates is provided and updated using a plurality of qualified beats. Updating...
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7512438 |
Implantable system for monitoring the condition of the heart
A “tracker system” that includes electrical leads which are part of an implanted cardiotracker plus external equipment that includes external alarm and a physician's programmer. The tracker...
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7502644 |
System and method for distinguishing among cardiac ischemia, hypoglycemia and hyperglycemia using an implantable medical device
Techniques are described for detecting ischemia, hypoglycemia or hyperglycemia based on intracardiac electrogram (IEGM) signals. Ischemia is detected based on a shortening of the interval between...
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7499744 |
Statistical method for assessing autonomic balance
A computationally efficient method for assessing a subject's autonomic balance by measurement of heart rate variability is disclosed which is particularly suitable for implementation by an...
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7484129 |
Physiologic event monitoring device having robust internal control
Categories are established for use in physiological monitoring devices and these categories are prioritized such that data indicative of a critical event self-triggers a communication to an...
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7480529 |
Method and apparatus for cardiac arrhythmia classification using sample entropy
An implantable medical device includes an arrhythmia detection and classification system that classifies an arrhythmia episode based on an irregularity parameter and/or a complexity parameter. The...
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7474920 |
Method and apparatus for delaying a ventricular tachycardia therapy
A device and method to detect slow ventricular tachycardia, deliver anti-tachycardia pacing therapies, and delay a scheduled shock therapy if the ventricular tachycardia is not terminated or...
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7463926 |
Automatic signal amplitude measurement system in the setting of abnormal rhythms
A system for automatically evaluating the sensing and detection of physiological processes by an implantable medical device, such as an implantable cardiac stimulation device. The system includes...
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7444179 |
Devices, systems and methods for characterization of ventricular fibrillation and for treatment of ventricular fibrillation
A method of determining a state of ventricular fibrillation, includes: measuring the rhythm of the heart during ventricular fibrillation for a period of time; creating a lagged phase space...
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7443303 |
System and method for managing workflow
A system and method for managing workflow is provided. The system includes one or more computer devices which execute workflow software to assign tasks to medical staff. The workflow software may...
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7430446 |
Methods and apparatuses for cardiac arrhythmia classification using morphology stability
An implantable cardioverter/defibrillator (ICD) includes a tachyarrhythmia detection and classification system that classifies tachyarrhythmias based on a morphological analysis of arrhythmic...
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7421292 |
System and method for controlling the recording of diagnostic medical data in an implantable medical device
Techniques are provided for controlling the recording of diagnostic data, such as intracardiac electrogram (IEGM) data, so as to reduce device power consumption. In one technique, the risk of onset...
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7412282 |
Algorithms for detecting cardiac arrhythmia and methods and apparatuses utilizing the algorithms
A method for detecting a cardiac arrhythmia from an electrocardiogram includes the steps of identifying a plurality of R-waves in the electrocardiogram during a predetermined time interval;...
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7403813 |
Systems and methods for detection of VT and VF from remote sensing electrodes
Methods and systems are provided for performing ventricular arrhythmia monitoring using at least two sensing channels that are each associated with different sensing vectors, for example by...
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7392090 |
Data logging system for implantable medical device
A data logging system and method in which an implantable medical device transmits logged data to an external data logging device with low energy potential signals. The implantable device generates...
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7376457 |
Utilization of heart rate variability in animals
Provided is a method for detection of a preselected condition such as subclinical stress or pain in a subject animal using heart rate variability. The method comprises the steps of determining a...
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7369890 |
Technique for discriminating between coordinated and uncoordinated cardiac rhythms
A system and method for discriminating cardiac rhythms in sensed cardiac complexes associated with at least two cardiac signals, which includes at least two electrodes disposed at different...
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7346388 |
Method and apparatus for rate accuracy enhancement in ventricular tachycardia detection
An implantable cardioverter/defibrillator (ICD) executes a rate accuracy enhancement algorithm to select measured atrial and ventricular intervals for classifying a detected tachycardia based on...
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7336997 |
Heart treatment equipment and heart treatment method
Heart treatment equipment and a heart treatment method directed to prevention of a fatal arrhythmia by detecting a physical exercise or a mental stress by using a sensor and thereafter controlling...
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7328066 |
Implantable cardiac stimulation device, system and method that identifies and prevents impending arrhythmias of the atria
An implantable cardiac stimulation device includes a system that identifies and prevents the occurrence of impending atrial arrhythmias. A sensing circuit senses atrial activity of a patient's...
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7328063 |
Method and apparatus for arrhythmia classification using atrial signal mapping
An implantable medical device senses a plurality of electrograms from substantially different atrial locations, detects regional depolarizations from the electrograms, and analyzes timing...
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7308301 |
Method and apparatus for detecting a cardiac arrhythmia
A method is provided for detecting whether a patient is likely experiencing a cardiac arrhythmia. The method includes acquiring baseline ECG samples that exhibit an arrhythmia that is to be...
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7295874 |
Intermittent stress augmentation pacing for cardioprotective effect
A device and method for delivering electrical stimulation to the heart in a manner which provides a protective effect against subsequent ischemia is disclosed. The protective effect is produced by...
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7289845 |
Curvature based method for selecting features from an electrophysiologic signal for purpose of complex identification and classification
A method for curvature based complex identification and classification comprises sensing a cardiac signal and computing curvatures at sample points on the sensed cardiac signal. Then to extract...
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7289844 |
System process for analyzing the medical condition of a user
A device and a process for analyzing a medical condition of a user. This device and process can also be used to predict a future abnormal medical condition of the user. The device includes a...
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7283865 |
Device and method for determining a cardiac condition using a complex signal formed from a detected cardiac signal
In a device and a method for determining a cardiac condition from a detected cardiac signal, an input signal is formed from the detected cardiac signal and supplied to an analysis unit. The...
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7280869 |
Arrhythmia termination detection based on beat pattern
In general, the invention is directed to an apparatus and method for determining whether an identified atrial tachyarrhythmia episode has terminated. The invention enables determination of whether...
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7277756 |
Risk of death indicator
A system comprising an implantable medical device (IMD). The IMD comprises a ventricular heart signal sensing circuit to provide a ventricular heart signal, at least one sensor operable to provide...
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7277747 |
Arrhythmia memory for tachyarrhythmia discrimination
This document discusses, among other things, a method of identifying a non-fatal tachyarrhythmia episode by determining a degree of similarity between the episode and a template generated from a...
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7272438 |
Mode switching heart stimulation apparatus and method
In a heart stimulation device a mode of operation is switched in response to detection of atrial tachyarrhythmia such as atrial fibrillation. The stimulation device may initially operate in a...
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7272437 |
Systems for processing electrocardiac signals having superimposed complexes
A system and a computed implemented methodology is disclosed for processing electrical signals recorded from the heart and, more particularly, for objectively deriving sub-components and comparing...
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7272435 |
System and method for sudden cardiac death prediction
A device that calculates a sudden cardiac death score based on acquired patient data. A system and method that combines independent indications of sudden cardiac death to predict sudden cardiac...
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7269454 |
Methods and devices to guide therapy for ventricular fibrillation based on waveform analysis and survival benefit analysis
A method of determining a state of ventricular fibrillation from a waveform, includes: performing calculations on the Fourier transform of the waveform voltage values by using the quotient of the...
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7266410 |
Method and system for the prediction of cardiac arrhythmias, myocardial ischemia, and other diseased condition of the heart associated with elevated sympathetic neural discharges
Methods and systems are provided for determining an increased likelihood of the occurrence of a cardiac arrhythmia, myocardial ischemia, congestive heart failure and other diseased conditions of...
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7266409 |
Method and apparatus for determining oversensing in a medical device
A method and apparatus for determining oversensing in an implantable medical device that includes sensing a first cardiac signal and detecting cardiac events via a first electrode configuration,...
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7257443 |
Method and apparatus for detecting oscillations in cardiac rhythm with electrogram signals
A cardiac rhythm management device is configured to detect oscillations in cardiac rhythm by comparing electrogram signals during successive heart beats. Upon detection of electrical alternans, the...
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