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Electrocardiogram patents



      
           
This page is updated frequently with new Electrocardiogram-related patent applications. Subscribe to the Electrocardiogram RSS feed to automatically get the update: related Electrocardiogram RSS feeds. RSS updates for this page: Electrocardiogram RSS RSS


Preauthorized wearable biometric device, system and method for use thereof

Bionym

Preauthorized wearable biometric device, system and method for use thereof

Determining onsets and offsets of cardiac depolarization and repolarization waves

Date/App# patent app List of recent Electrocardiogram-related patents
01/29/15
20150032015
 Methods, systems and devices for detecting and diagnosing diabetic diseases and disorders patent thumbnailnew patent Methods, systems and devices for detecting and diagnosing diabetic diseases and disorders
Disclosed herein methods, devices, and systems for detecting and diagnosing a diabetic disease or disorder in a subject from a prime electrocardiogram which comprises calculating at least one distribution function of the prime electrocardiogram and determining whether the distribution function is indicative of the presence of absence of the diabetic disease or disorder.. .
Dynacardia, Inc.
01/29/15
20150032014
 Determining onsets and offsets of cardiac depolarization and repolarization waves patent thumbnailnew patent Determining onsets and offsets of cardiac depolarization and repolarization waves
An exemplary computer-implemented method is disclosed for detection of onset of depolarization on far-field electrograms (egms) or electrocardiogram (ecg)- or ecg-like signals. The method includes determining a baseline rhythm using a plurality of body-surface electrodes.
01/29/15
20150028996
 Preauthorized wearable biometric device,  use thereof patent thumbnailnew patent Preauthorized wearable biometric device, use thereof
Embodiments are directed towards authenticating users using biometric devices. The biometric device may be arranged to capture one or more biometric feature of a user that may be wearing the biometric device such as biometric features that correspond to an electrocardiogram of the user.
Bionym Inc.
01/22/15
20150025560
 Needle for physically separating and penetrating the pericardium patent thumbnailNeedle for physically separating and penetrating the pericardium
A pericardial needle that punctures a pericardial membrane to attain access into a pericardial space of a heart by advancing a sharp tip until the sharp tip is adjacent to or in contact with a parietal pericardium of the heart such that the puncturing does not damage the heart muscle. The pericardial needle punctures the parietal pericardium when the heart muscle moves towards the pericardial needle, away from the pericardial needle, is at rest and/or is in synchronization with the systolic contraction period of the cardiac cycle of the heart.
01/22/15
20150025403
 Mood analysis method, system, and apparatus patent thumbnailMood analysis method, system, and apparatus
In a mood analysis method using an electrocardiogram of a user, rr intervals in the electrocardiogram are computed, and low-frequency (lf) values and high-frequency (hf) values are also computed according to the rr intervals. Standard values of sympathetic nervous system (sns) activity and parasympathetic nervous system (psns) activity are acquired corresponding to age and sex data of the user, to establish a mood display coordinate system.
Chiun Mai Communication Systems, Inc.
01/22/15
20150025395
 Breathing analysis method, system, and apparatus patent thumbnailBreathing analysis method, system, and apparatus
In a breathing analysis method using an electrocardiogram of a user, a breathing curve is generated according to r waves in the electrocardiogram, and whether the user is currently taking a breathing out action or a breathing in action is detected according to the breathing curve. A duration of the breathing in action or the breathing out action of the user is computed according to the breathing curve, and a ratio of the duration and a standard time of the breathing in action or the breathing out action is computed.
Chiun Mai Communication Systems, Inc.
01/15/15
20150018702
 Devices and methods for real-time denoising of electrocardiograms patent thumbnailDevices and methods for real-time denoising of electrocardiograms
Apparatuses and methods (including methods of using such apparatuses) for de-noising electrocardiograms (ecgs) by manually or automatically adjusting the amount of filtering of an ecg signal. For example, real-time ecg signals may be filtered by combining in a weighted fashion an unfiltered portion of an ecg (or a filtered portion of the same ecg) with the same portion of the ecg that has been filtered.
Alivecor, Inc.
01/15/15
20150018660
 Apparatus for coupling to computing devices and measuring physiological data patent thumbnailApparatus for coupling to computing devices and measuring physiological data
Devices, systems, and methods for measuring and monitoring biometric or physiological parameters in a user-friendly and convenient manner are disclosed. Relevant physiological parameters of the user may be measured as the user normally operates a computing device or other hand-operated or hand-held device.
Alivecor, Inc.
01/15/15
20150015417
 Patient monitoring systems and methods patent thumbnailPatient monitoring systems and methods
An adherent patient device is configured to adhere to the skin of the patient and measure electrocardiogram data, impedance data, accelerometer data, blood oxygen data and temperature data. The adherent device can communicate wirelessly with gateways and a local processor system, such that the patient can wander about the hospital and update the monitoring station with the patient data when the patient is ambulatory.
Corventis, Inc.
01/08/15
20150011903
 Non-linear filtering for the reconstruction of a surface electrocardiogram from an endocardial electrogram patent thumbnailNon-linear filtering for the reconstruction of a surface electrocardiogram from an endocardial electrogram
An active medical device using non-linear filtering for the reconstruction of a surface electrocardiogram (ecg) from an endocardial electrogram (egm) is disclosed. The device for the reconstruction of the surface ecg includes a plurality of inputs, receiving a corresponding plurality of egm signals from endocardial or epicardial electrogram (x1[n], x2[n]), each collected on a respective egm derivation of a plurality of egm derivations, and at least one output delivering a reconstructed surface ecg electrocardiogram signal (y[n]), related to an ecg derivation, and a non-linear digital filter (12′, 12′, 14) with a transfer function that determines the reconstructed ecg signal based on said plurality of input egm signals.
Sorin Crm Sas
01/08/15
20150011902

Method and system for cardiac ischemia detection


Disclosed herein are methods and systems providing improvements enhancing speed and accuracy in interpreting the electrocardiogram (ecg) for ischemia identification using a graphical presentation. An ischemia criteria and st segment measurements to be tested are graphically presented simultaneously.
Koninklijke Philips N.v.
01/01/15
20150005738

System and monitoring of guide catheter seating


A method for monitoring the seating of a guide catheter during a catheter procedure includes monitoring at least one parameter of the catheter procedure and determining if the at least one parameter indicates that a guide catheter is out of position. If the at least one parameter indicates the guide catheter is out of position, an alert is displayed and the position of the guide catheter is adjusted.
Corindus, Inc.
01/01/15
20150005653

Personal electronic devices with unobtrusive ekg-based detection of heart rate and rhythm anomalies


A personal electronic device is configured to unobtrusively detect heart rate and rhythm anomalies utilizing an electrocardiogram (ekg)-based detection and monitoring method. As one example, while a user is using the personal electronic device for its intended function, such as communicating, playing music, and/or watching videos, the personal electronic device may be unobtrusively detecting and recording a user's heart rate and heart rhythm to detect anomalies.
Avaya Inc.
01/01/15
20150005590

Multi-sensor patient monitor to detect impending cardiac decompensation


Systems and methods of detecting an impending cardiac decompensation of a patient measure at least two of an electrocardiogram signal of the patient, a hydration signal of the patient, a respiration signal of the patient or an activity signal of the patient. The at least two of the electrocardiogram signal, the hydration signal, the respiration signal or the activity signal are combined with an algorithm to detect the impending cardiac decompensation..
Corventis, Inc.
12/25/14
20140379042

Determination for effective defibrillation


A method for managing care of a person receiving emergency cardiac is disclosed and involves monitoring, with an external defibrillator, multiple parameters of the person receiving emergency cardiac assistance; determining from at least one of the parameters, an indication of trans-thoracic impedance of the person receiving emergency cardiac care; determining, from at least one of the parameters corresponding to an electrocardiogram of the person receiving emergency cardiac assistance, an initial indication of likely shock effectiveness; determining, as a function of at least the indication of trans-thoracic impedance and the initial indication of likely shock effectiveness, an indication of whether a shock provided to the person receiving emergency medical assistance will be effective; and affecting control of the defibrillator by a caregiver as a result of determining the indication of whether a shock will be effective.. .
Zoll Medical Corporation
12/25/14
20140378902

Electrocardiogram noise reduction


Methods and systems of catheterization include a flexible catheter adapted for insertion into a heart of a living subject. The catheter has a lumen for passing an electrically conductive fluid therethrough with the fluid exiting the catheter at the distal portion.
Biosense Webster (israel), Ltd.
12/25/14
20140378805

Electrocardiogram noise reduction


Methods and systems of catheterization include a flexible catheter adapted for insertion into a heart of a living subject. The catheter has a lumen for passing an electrically conductive fluid therethrough, which is propelled by a peristaltic pump.
Biosense Webster (israel), Ltd.
12/18/14
20140371574

Noncontact electrophysiological measurement and imaging of the heart


Method and system for noncontact electrophysiologic imaging of the heart. The methods may employ the magnetization and its relaxation-based measurements, sensitive or specifically sensitized to the properties of cardiac electrical activity, to determine the spatio-temporal distribution of cardiac electromagnetic field and cardiac electrical potentials, and to display such spatio-temporal distribution (image) for assisting in the identification of the regions with abnormal cardiac electrical activity.
University Of Pittsburgh - Of The Commonwealth System Of Higher Education
12/11/14
20140364754

Rms electrocardiography system and method


A system for assessing a cardiac condition of a subject includes a sensor configured to record a plurality n of electrocardiographic signals from the subject to generate an ecg (electrocardiogram). The system further includes a processor configured to compute an rms (root-mean-square) magnitude function from the recorded signals, and to measure from the rms magnitude function an rms variable that contains information about the cardiac condition of the subject.
12/11/14
20140364732

Method of detecting electrocardiogram signal, displaying electrocardiogram signal, and electrocardiogram signal detecting apparatus


A method of detecting an electrocardiogram signal is disclosed. The method includes measuring an electrocardiogram signal, determining a wave period based on an inclination of the measured electrocardiogram signal, and detecting an apex of the electrocardiogram signal with at least one of a maximum size and inclination in the wave period..
12/04/14
20140358048

Selective post-shock transthoracic pacing


A medical device can include a housing, an energy storage module within the housing to store an electrical charge, and a defibrillation port to guide via electrodes the stored electrical charge to a person in need of medical assistance. The medical device can also include a processor to perform a patient signal analysis on an electrocardiogram (ecg) signal corresponding to the person and further determine, based on a result of the patient signal analysis, whether post-shock transcutaneous pacing should be performed on the person..
11/20/14
20140343377

Portable device for measuring blood pressure and method thereof


A portable blood pressure measuring apparatus and a method therefor are provided. A method for measuring blood pressure by an electronic device includes measuring a blood pressure of a user; measuring a pulse wave velocity (pwv) using a pulse wave and an electrocardiogram (ecg) signal of the user, wherein the pulse wave is measured by an optical sensor, and the ecg signal is measured by an ecg electrodes portion; and compensating the blood pressure using the pwv..
11/06/14
20140330149

Methods, systems and devices for detecting atrial fibrillation


Disclosed herein are various embodiments of methods, systems and devices for detecting atrial fibrillation (af) in a patient. According to one embodiment, a patient places his or her left and right hands around left and right electrodes and a hand-held atrial fibrillation detection device acquires an electrocardiogram (ecg) from the patient over a predetermined period of time such as, by way of example, one minute.
11/06/14
20140330136

Adherent device with multiple physiological sensors


An adherent device to monitor a patient comprises an adhesive patch to adhere to a skin of the patient, and at least four electrodes connected to the patch and capable of electrically coupling to the patient. The adherent device further includes impedance circuitry coupled to the at least four electrodes to measure a hydration signal of the patient and electrocardiogram circuitry coupled to at least two of the at least four electrodes to measure an electrocardiogram signal of the patient..
11/06/14
20140330091

Heart failure decompensation prediction based on cardiac rhythm


Systems and methods of detecting an impending cardiac decompensation of a patient measure an electrocardiogram signal of the patient. An incidence of cardiac arrhythmias is determined from the electrocardiogram signal.
11/06/14
20140330088

Adherent device for sleep disordered breathing


An adherent device is configured to adhere to the skin of the patient with an adherent patch, for example breathable tape, coupled to at least four electrodes. The device comprises impedance circuitry coupled to the at least four electrodes and configured to measure respiration of the patient to detect sleep apnea and/or hypopnea.
10/30/14
20140323895

2deg-based sensor and device for ecg sensing


The disclosed technology generally relates to sensors comprising a two-dimensional electron gas (2deg), and more particularly to an algan/gan 2deg-based sensor for sensing signals associated with electrocardiograms, and methods of using the same. In one aspect, a sensor comprises a substrate and a gan/algan hetero-junction structure formed on the substrate and configured to form a two-dimensional electron gas (2deg) channel within the gan/algan hetero-junction structure.
10/30/14
20140323891

Method and system for determining cardiac performance


Methods, associated algorithms, and systems for determining cardiac and/or cardiovascular performance from three measurements on a subject are presented, where two of the measurements are provided by plethysmographs and one measurement is provided by an electrocardiogram. The two plethysmographs are placed different distances from the subject's heart.
10/16/14
20140309540

Biosignal measurement apparatus and biosignal measurement method


A biosignal measurement apparatus includes: a potential difference measurement unit that measures a potential difference between a plurality of electrodes of an electrode unit placed on a user's chest; an ecg analysis unit that obtains an electrocardiogram (ecg) indicating a temporal variation of a cardiac potential of the user, from the potential difference measured by the potential difference measurement unit; an impedance measurement switching unit that determines a start timing of a first period which is a period not including an r wave, using the ecg obtained by the ecg analysis unit; an impedance measurement unit that measures an impedance between the plurality of electrodes in the first period; and a respiratory calculation unit that calculates respiratory information related to respiration of the user, based on a temporal variation of the impedance measured by the impedance measurement unit.. .
10/02/14
20140296726

Method and identifying cardiac risk


A cardiac-based metric is computed based upon characteristics of a subject's cardiac function. In accordance with one or more embodiments, the end of a mechanical systole is identified for each of a plurality of cardiac cycles of a subject, based upon an acoustical vibration associated with closure of an aortic valve during the cardiac cycle.
10/02/14
20140296722

Device and digital-to-analog transformations and reconstructions of multi-channel electrocardiograms


The present invention includes a method and apparatus for digital to analog conversion and reconstruction of multichannel electrocardiograms. The method may include receiving digital information representative of a plurality of independent signals, producing a plurality of analog outputs from said digital information wherein a first analog output is designated as a common reference, and imposing a predetermined voltage on a second analog output with respect to said common reference, which provides for a substantial recreation of the original independent signals.
10/02/14
20140296686

Apparatus, device and obtaining electrocardiogram


Embodiments of the present invention provides an apparatus containing a device communicably coupled to two electrodes that may be positioned on a body of a subject for obtaining 12 leads or 18 leads electrocardiogram. The two electrodes may obtain signal parameters such as arm leads (i, ii, iii, avr avl and avf) and left chest leads (v1, v2, v3, v4, v5, v6) and right chest leads (v1r, v2r, v3r, v4r, v5r, v6r).
10/02/14
20140296685

Multiple electrode composite use in electrocardiogram detection systems


A biomedical sensor system is disclosed that includes a plurality of electrodes and a contiguous adhesive material that is in contact with each of the plurality of electrodes. In certain embodiments a method is provided that includes the step of applying a first surface of adhesive material to a patient wherein the adhesive material includes at least two electrodes on second surface thereof that is opposite the first surface.
10/02/14
20140296684

High impedance signal detection use in electrocardiogram detection systems


A biomedical sensor system is disclosed that includes a high impedance conductive electrode having an electrode impedance of at least about 20 kω/sq-mil, and a dielectric material on a first side of the electrode for receiving a discharge of an electrical signal from the dielectric material responsive to the presence of a time varying signal adjacent a second side of the dielectric material that is opposite the first side.. .
10/02/14
20140296681

Electrocardiograph, measuring electrocardiogram, and computer program product


According to an embodiment, an electrocardiograph includes first and second electrode pairs, first and second detectors, and an electrocardiogram detector. A difference between a first distance between two electrodes of the first electrode pair on a first line and a second distance between two electrodes of the second electrode pair on a second line is not more than a first threshold.
09/25/14
20140288845

Technique for real-time removal of power line interference in ecg


A technique for real-time removal of power line interference (pli) in electrocardiograms (ecg) with sampling rate a relevant integer multiple of the nominal power line frequency (nplf), comprising band-pass pli filtering of the ecg, determining expedient weights and weighted least-squares parabolic approximating downsampled to the nplf series of band-pass pli filtered values. The disclosed technique utilizes only integer arithmetic, includes pre-adjusting for the routine ecg sampling rates, causes negligible ringing and is still accurate in the common occurrences of pli with deviating from the nominal 60 or 50 hz frequency and varying amplitude..
09/18/14
20140277228

Treatment guidance based on victim circulatory status and prior shock outcome


A system for managing care of a person receiving emergency cardiac assistance is disclosed that includes one or more capacitors for delivering a defibrillating shock to a patient; one or more electronic ports for receiving signals from sensors for obtaining indications of an electrocardiogram (ecg) for the patient; and a patient treatment module executable on one or more computer processors to identify a phase in which a patient being monitored by the system is in relative to a time at which an adverse cardiac event for patient began.. .
09/18/14
20140277225

Windowing for identifying shock outcome


A system for managing care of a person receiving emergency cardiac assistance is disclosed that includes one or more capacitors for delivering a defibrillating shock to a patient; one or more electronic ports for receiving signals from sensors for obtaining indications of an electrocardiogram (ecg) for the patient; and a patient treatment module executable on one or more computer processors using code stored in non-transitory media and to provide a determination of a likelihood of success from delivering a future defibrillating shock to the person with the one or more capacitors, using (a) a mathematical transform from a time domain to a frequency domain applied to the indication of the ecg, and (b) a tapered window for identifying the portion of the indications of the ecg on which the transform is performed.. .
09/18/14
20140277224

Shock determination based on prior shocks


A system for managing care of a person receiving emergency cardiac assistance is disclosed that includes one or more capacitors for delivering a defibrillating shock to a patient; one or more electronic ports for receiving signals from sensors for obtaining indications of an electrocardiogram (ecg) for the patient; a patient treatment module executable on one or more computer processors to provide a determination of a likelihood of success from delivering a future defibrillating shock to the person with the one or more capacitors, using (a) information about a prior defibrillating shock, and (b) a value that is a function of current ecg signals from the patient.. .
09/18/14
20140275886

Sensor fusion and probabilistic parameter estimation method and apparatus


A probabilistic digital signal processor using data from multiple instruments is described. Initial probability distribution functions are input to a dynamic state-space model, which operates on state and/or model probability distribution functions to generate a prior probability distribution function, which is input to a probabilistic updater.
09/11/14
20140257177

Pericardial-liquid level control system


Provided is a pericardial-liquid level control system with which a good viewing field can be ensured for an endoscope image without causing cardiac tamponade. A pericardial-liquid level control system is employed, including a sheath that is inserted into the pericardium; pumps that supply and expel liquid to and from the sheath; electrocardiogram electrodes that detect electrocardiographic information; and a pump control device that, in synchronization with the electrocardiographic information detected by the electrocardiogram electrodes, controls the pumps so that the liquid is supplied to the pericardium via the sheath during contraction of the heart and the liquid is expelled from the pericardium via the sheath during expansion of the heart..
09/11/14
20140257124

Atrial fibrillation analyzer and program


An atrial fibrillation analyzer includes: an acquisition unit that acquires a detected waveform signal indicating a detection result of a pulse wave or an electrocardiogram; an rr interval calculation unit that calculates, on the basis of a spectrum of each unit period obtained by frequency analysis performed on the acquired detected waveform signal every unit period longer than 4 seconds and equal to or shorter than 16 seconds, a parameter corresponding to an average rr interval of the unit period every unit period; a power calculation unit that calculates power of a frequency band determined in advance in an rr waveform signal indicating a temporal change of the average rr interval calculated by the rr interval calculation unit; and an analysis unit that determines whether or not the power satisfies specific conditions and outputs information indicating presence of atrial fibrillation from the determination result.. .
09/11/14
20140257123

Atrial fibrillation analyzer, atrial fibrillation analysis system, atrial fibrillation analysis method, and program


An atrial fibrillation analyzer includes: an acquisition unit that acquires a waveform signal indicating a temporal change of a pulse wave or an electrocardiogram; an rr interval calculation unit that calculates a parameter corresponding to an average rr interval for each frame on the basis of a spectrum of each frame obtained by frequency analysis of the acquired waveform signal, and calculates an rr waveform signal indicating a temporal change of the parameter; a power calculation unit that calculates a temporal change of power of a predetermined frequency band in a frequency spectrum of the rr waveform signal; a variation coefficient calculation unit that calculates a variation coefficient of the average rr interval; an analysis unit that analyzes presence of atrial fibrillation on the basis of a set of the power and the variation coefficient; and a measurement unit that measures an amount of activity of a user.. .
09/11/14
20140257122

System and determining a risk score for triage


The present disclosure provides a system and method of determining a risk score for triage. In particular, a system is provided for providing an assessment of risk of a cardiac event for a patient, for example an incoming patient to a hospital emergency department complaining of chest pain.
09/04/14
20140249437

Method and system to fully-automatically measure the st-segment level of electrocardiograms in real-time ecg monitoring


A system for determining the q and j points of an electrocardiogram (ecg) combines a wlt-based q, j detection algorithm with signal quality assessment for lead selection. A q, j detector (24) receives a beat-cycle waveform for the beat under consideration from each of a plurality (n) of ecg leads, and assesses signal quality for each lead using signal quality assessor (sqa) components 261, 262 .
09/04/14
20140249398

Determining pulse transit time non-invasively using handheld devices


A system and method to determine pulse transit time using a handheld device. The method includes generating an electrocardiogram (ekg) for a user of the handheld device.
08/28/14
20140243659

Method of locating the tip of a central venous catheter


Methods of locating a tip of a central venous catheter (“cvc”) relative to the superior vena cava, sino-atrial node, right atrium, and/or right ventricle using electrocardiogram data. The cvc includes at least one electrode.
08/21/14
20140235996

Method for non-invasive mapping of myocardial electric activity


A method for mapping of myocardial electric activity includes measuring electrocardiogram data or magnetocardiogram data and mapping the degree of electric activity of a myocardial surface using the electrocardiogram data or the magnetocardiogram data. A signal source of the electrocardiogram data or the magnetocardiogram data is a myocardial surface potential that is scalar quantity.
08/14/14
20140228695

Ecg rhythym advisory method


A method of automatically determining which type of treatment is most appropriate for a cardiac arrest victim, the method comprising transforming one or more time domain electrocardiogram (ecg) signals into a frequency domain representation comprising a plurality of discrete frequency bands, combining the discrete frequency bands into a plurality of analysis bands, wherein there are fewer analysis bands than discrete frequency bands, determining the content of the analysis bands, and determining the type of treatment based on the content of the analysis bands.. .
08/14/14
20140228665

Two electrode twelve lead ecg


Described herein are methods, apparatuses, and systems for heart monitoring of a patient. The heart monitoring system can be used to take an electrocardiogram (ecg) using only two electrodes.
08/07/14
20140222350

Electrocardiogram baseline removal


A system includes a low pass-filter and a savitzky-golay filter. The low-pass filter receives and processes a first electrocardiogram signal.
08/07/14
20140221860

Electrocardiogram analyzer


An electrocardiogram analyzer has a measurement section for measuring an electrocardiographic signal; a determination unit for determining, from arrhythmia determination reference information that is information pertinent to arrhythmia, whether or not an electrocardiogram multiplex, which includes a first predetermined number of heart beats, in the thus-measured electrocardiographic signal is arrhythmia; a reference waveform determination unit that determines a reference waveform from the electrocardiogram complex including the first predetermined number of heart beats when the determination unit has determined that the electrocardiogram complex is not arrhythmia, storing the thus determined reference waveform; and an analysis unit that performs an analysis as to whether or not an electrocardiogram complex being measured is arrhythmia by use of the stored reference waveform.. .
08/07/14
20140221859

Cardiac performance monitoring system for use with mobile communications devices


Described herein are apparatuses (e.g., devices, systems, software), and methods for monitoring the cardiac health of a patient. The apparatuses and methods may include a smartphone or hand held computing device having an accelerometer.
08/07/14
20140221858

System and providing diagnosis and personalized abnormalities alerts and for providing adaptive responses in clinical trials


A personalized real-time automated cardiovascular monitoring system monitors abnormalities in a patient's cardiovascular activity data through the use of individually adjusted electrocardiogram holter apparatus (holter/ecg device) that provides an automatic medical diagnosis of cardiac abnormalities and generates abnormality alert signals representative of certain abnormalities in patient's cardiac activities. The signals are transmitted using a wireless network through a bi-directional wireless protocol.
07/31/14
20140213921

Method and identifying cardiac risk


A cardiac-based metric is computed based upon characteristics of a subject's cardiac function. In accordance with one or more embodiments, the end of a mechanical systole is identified for each of a plurality of cardiac cycles of a subject, based upon an acoustical vibration associated with closure of an aortic valve during the cardiac cycle.
07/31/14
20140213882

Electrode structure for measuring bio-signal and measuring electrocardiogram using the same


The electrode structure for measuring a bio-signal and an apparatus for measuring an electrocardiogram using the same are disclosed. The electrode structure for measuring a bio-signal, comprises an electrode pad to measure bio-signals based on capacitive coupling between the electrode pad and human skin; an absorption layer formed at one side of the electrode pad; and a preamplifier which is electrically connected with the electrode pad and filters noise from the bio-signals from the electrode pad and amplifies and outputs the signals.
07/31/14
20140212016

X-ray ct apparatus and image correction method


There is provided an x-ray ct apparatus capable of correcting the unevenness of the contrast concentration due to discontinuities in time between slices in contrast imaging using a prospective triggering method. In an x-ray ct apparatus 1, projection data in a specific phase of the heart is obtained by performing a scan by emitting x-rays after a predetermined time from the detection of the r wave of electrocardiogram information at each position of the heart in the body axis direction.
07/24/14
20140207012

Systems and methods for analyzing electrocardiograms to detect ventricular fibrillation


The present technology describes various embodiments of systems and methods for analyzing electrocardiograms to detect ventricular fibrillation. In several embodiments, systems for detecting ventricular fibrillation can be implemented without interrupting cardiopulmonary resuscitation.
07/24/14
20140207005

System and real-time three dimensional modeling of cardiovascular dynamics and the heart using electrocardiogram signals


There is taught herein a real-time, lumped parameter cardiovascular dynamics model that uses features extracted from online electrocardiogram (ecg) signal recordings to generate certain surrogate hemodynamic signals. The derived signals can be used to real time animate a 3-d heart model.
07/17/14
20140200469

Non-contact electrocardiogram system


A non-contact electrocardiogram (ecg) sensor having an ecg electrode and guard electrode coupled to an electronic circuit that actively gain-corrects the electrocardiogram signal based on fringe capacitance signal and filters the gain-corrected signal based on a static charge reference signal. The compensation system first makes a gain correction for the preamplifier to address ecg electrode-to-subject motion and then removes any additive static common mode interference from motion-induced static charge generation..
07/10/14
20140194764

Twa measuring apparatus and twa measuring method


A twa measuring apparatus includes: a t-wave feature quantity measuring section; a classifying section classifying t-wave feature quantities into groups of odd and even electrocardiogram waveforms; a reliability index calculating section calculating: first and second representative values and first and second dispersion values of the t-wave feature quantities in the odd and even group; a difference between the first and second representative values, to obtain a twa feature quantity; and an adjustment value between the first representative value and the first dispersion value, and an adjustment value between the second representative value and the second dispersion value, to obtain a reliability index; and a reliability recognizing section recognizing: when the reliability index exceeds a threshold, that reliability of the twa feature quantity is high; and when the reliability index does not exceed the threshold, that the reliability is low.. .
07/10/14
20140194721

Method and obtaining cardiovascular information by measuring between two extremities


A method and an apparatus for obtaining information on a cardiovascular system beat by beat and continuously which are based exclusively on measurements between two limbs and effected with a pair of distal electrodes on each limb. The measurement is made by causing an alternating current to flow between one electrode of each limb and measuring the potential difference between the other two electrodes, one also on each limb.
06/26/14
20140180144

Oscillometric non-invasive blood pressure measurements in patients experiencing abnormal heartbeats


Disclosed is a method for implementation by one or more data processors including acquiring noninvasive blood pressure data using an inflatable cuff applied around a portion of a patient by inflating the cuff to a pressure above the patient's systolic blood pressure, and detecting a first oscillation pulse within the cuff during a deflation step. The method also includes acquiring electrocardiogram (ecg) data from the patient by detecting an ecg waveform corresponding to a first heartbeat using an ecg lead coupled to the patient, classifying the ecg waveform as normal or not normal, aligning, the first oscillation pulse to the ecg waveform corresponding to the first heartbeat if the ecg waveform is classified normal or rejecting the first oscillation pulse if the ecg waveform is classified not normal, and calculating the blood pressure using the aligned first oscillation pulse.
06/19/14
20140172048

Implantable cardiac devices and methods


Embodiments relate to an implantable cardiac system, including a housing, electronic circuitry for controlling one or more of power management, processing unit, information memory and management circuit, sensing and simulation output. The system also includes diagnosis and treatment software for diagnosing health issues, diagnosing mechanical issues, determining therapy output and manage patient health indicators over time, a power supply system including at least one rechargeable battery, a recharging system, an alarm (or alert) system to inform patient of energy level and integrity of system, communication circuitry, one or more electrodes for delivering therapeutic signal to a heart and one or more electrodes for from delivering electrocardiogram signal from the heart to the electronic circuitry.
06/12/14
20140163386

Circuit for heartbeat detection and beat timing extraction


A circuit and method for long term electrocardiogram (ecg) monitoring is implemented with the goal of reducing power consumption, battery size, and consequently device size. In one embodiment, the integrated circuit includes an amplifier cell having a plurality of input terminals and an output terminal; a qrs amplifier cell in communication with the output of the amplifier cell; a baseline amplifier cell in communication with the output of the amplifier cell; a comparator cell having a first input terminal in communication with the output terminal of the qrs amplifier cell; and a vdc cell having an input in communication with the output of the baseline amplifier cell and an output in communication with the second input terminal of the comparator cell, wherein the comparator cell generates an output pulse in response to the output signal from the amplifier cell and the output signal from the baseline amplifier cell..
06/05/14
20140155950

Leadless cardiac stimulation systems


Various configurations of systems that employ leadless electrodes to provide pacing therapy are provided. In one example, a system that provides multiple sites for pacing of myocardium of a heart includes wireless pacing electrodes that are implantable at sites proximate the myocardium using a percutaneous, transluminal, catheter delivery system.
06/05/14
20140152653

Ultrasound image processing to render three-dimensional images from two-dimensional images


Methods for processing two-dimensional ultrasound images from an intracardiac ultrasound imaging catheter provide improved image quality and enable generating three-dimensional composite images of the heart. Two-dimensional ultrasound images are obtained and stored in conjunction with correlating information, such as time or an electrocardiogram.
05/29/14
20140148714

Automatic online delineation of a multi-lead electrocardiogram bio signal


Method for automatic online delineation of an electrocardiogram (ecg) bio signal, said method comprising the detection of said bio signal through several leads followed by the combination of those multiple acquisitions into a single root-mean-squared (rms) curve, said rms curve being then undergoing a real-time single-lead delineation based on a mathematical processing.. .
05/22/14
20140142649

Methods and predicting acute response to cardiac resyncronization therapy at a given stimulation site


Response to cardiac resynchronization therapy is predicted for a given stimulation site so that an atrioventricular delay of an implantable device administering cardiac resynchronization therapy may be set to a proper amount. The first deflection of ventricular depolarization is measured, such as through a surface electrocardiogram or through an intracardiac electrogram measured by a lead positioned in the heart at the stimulation site.
05/22/14
20140142441

Biosignal measuring device, biosignal measuring method and biosignal program


A biosignal measuring device has a first information acquisition module, a second information acquisition module, a first calculation module, a second calculation module, a third calculation module, a heartbeat interval estimation module, a determination module, and an output module. The first information acquisition module acquires the pulse wave signal.


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Electrocardiogram topics: Electrocardiogram, Physiologic, Arrhythmias, Blood Pressure, Arrhythmia, Executable, Ultrasound Image, Ultrasound, User Interface, Pressure Measurement, Magnetic Resonance Angiography, Shared Memory, Angiography, Physiological Data, Autonomic Nervous System

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