|| List of recent Electrocardiogram-related patents
| Image diagnostic apparatus and method, and recording medium|
The image diagnostic method includes acquiring an electrocardiogram (ecg) signal of an object, selecting a scan protocol used to reconfigure a heart image of the object, based on the acquired ecg signal, and providing a user with information used to propose the selected scan protocol.. .
| Biological state analyzer and computer program|
A novel technique for analyzing a biological state is provided. A body trunk biological signal (aortic pulse wave) extracted from the back of a body trunk is differentiated twice.
|Activity, posture and heart monitoring system and method|
A system and a method for monitoring activity and posture of a person in correlation with the person's heat activity, comprising a) simultaneously detecting first linear accelerations and first angular speeds of rotation of an upper part of the person's body, second linear accelerations and second angular speeds of rotation of a lower part of the person's body, and the person's electrocardiogram signal; and b) determining the person's activity and posture from the first and second linear accelerations, the first and second angular speeds of rotation, and at least one of: i) a derivation signal, ii) heart rate and iii) a respiratory rate, of the person from the electrocardiogram signal.. .
|Direct comparison of multiple healthcare waves|
Methods and systems are directed to the evaluation of a particular healthcare activity by comparing the plurality of waves of the healthcare activity from two or more of the same healthcare activity. This includes the electrocardiogram (ecg or ekg) and its use in comparing two or more ecgs of a patient.
Cerner Innovation, Inc.
|Optimization of pacemaker settings with r-wave detection|
The system provides information to facilitate efficient optimization of programmer settings for cardiac pacemakers. It simultaneously measures a patient's electrocardiogram and peripheral blood pressure (or volumetric displacement) waveform in order to calculate, in real-time and non-invasively, a value correlated to the pre-ejection time (pet) and, optionally, ejection duration (ed) for the patient's left ventricle.
Atcor Medical Pty Ltd
|Method for non-contrast enhanced magnetic resonance angiography|
A method for non-contrast enhanced magnetic resonance angiography (“mra”) that has a short scan time and is insensitive to patient motion is provided. More particularly, the method provides significant arterial conspicuity and substantial venous signal suppression.
|Instrumentation absolute value differential amplifier circuit and applications|
An instrumentation absolute value differential amplifier (212) is used as part of an electroencephalogram, electromyogram or electrocardiogram to quantify the excitation state of a user, processing and transmitting this information as a control signal for a user feedback device. In one embodiment, this feedback device comprises a wireless sex toy (500) which responds to the sent control information, acting as a mind-controlled sex toy.
|Multimedia terminal with vital parameters monitoring|
Multimedia terminal with vital parameters monitoring, commonly used in hospitals and homes to enable access to communication networks, tv and multimedia contents to bed-ridden persons. A multichannel measurement module showing readings on the same screen, including electronic circuits and connection for probes for electrocardiograms, pulse oximeters, tensiometers, temperature sensors, etc.
Medip Health, S.l.
|Systems and methods for interelectrode distance optimization in a retractable multi-use cardiac monitor|
A retractable multi-use cardiac monitor is provided that includes a memory, and first and second sensing connectors positioned on outsides of first and second housings, respectively. The first and second sensing connectors are configured to detect electrocardiogram (ecg) signals that are stored onto the memory as ecg data.
|Electrocardiogram pace pulse detection and analysis|
Data is received characterizing an electrocardiogram (ecg) measured from a patient having a pacemaker. The pacemaker can intermittently provide a pace to a heart of the patient.
Draeger Medical Systems, Inc.
Ambulatory diagnostic device and method thereof
The present disclosure relates to a device and method for acquiring and processing sensor signals on a host device. The device comprises a jack and connects to a socket on the host device.
Physiological monitor and methods for placement and wear
Physiological monitors are disclosed, as are systems and methods in which they are used. The physiological monitors are generally horseshoe-shaped and are sized and adapted to fit around the base of the neck.
Systems and methods for cardiac rhythm variability analysis
Systems and methods are provided for the study of the cardiac rhythm variability. These systems and methods include the recording of the electrocardiogram (ekg), with subsequent calculation of the duration of the beat-to-beat intervals (i.e., r-r intervals), drawing up of the rhythmograms, and additional systems and methods that include determination of, throughout all observation times within particular intervals included in the recording periods, the average values of the informational entropy of the beta-distribution (ae) of the r-r intervals, the differences between the maximum and minimum values of the informational entropy of the beta-distribution (mde) of the r-r intervals, the root-mean-square deviations of the informational entropy of the beta-distribution (rmsde) of the r-r intervals, and/or variation factors of the informational entropy of the beta-distribution (vfe) by means of calculation of the informational entropy of the beta-distribution of the r-r intervals..
A sensor instrument for generation of electrocardiograms, in particular for cardiac computed tomography, has two electrodes, an electronic module and a support, wherein multiple suction elements for affixing the support to the body of a subject (are positioned on the support.. .
External cardiac defibrillator system for household use
External cardiac defibrillators that include automatic or semi-automatic self-contained defibrillators to be used by non-health professionals (physicians, nurses and other specifically trained persons). A power subassembly in an automatic or semi-automatic cardiac defibrillator system which, associated with a computer device, is capable of diagnosing a patient's condition by performing a simplified electrocardiogram, transmitting the data to the electronic device and supplying, controlled by this device, electric shocks to the patient, and also providing or contributing to further ancillary defibrillation functions..
Noninvasive atrial activity estimation system and method
Provided is a non-invasive system for estimating an atrial signal, including a plurality of sensors to sense a surface electrocardiogram signal, a reference atrial signal generation unit to generate an estimated ventricular signal with respect to a r wave in an electrocardiogram signal from one sensor among the plurality of sensors, and to generate a reference atrial signal by subtracting the estimated ventricular signal from the electrocardiogram signal from the one sensor, and an atrial signal estimation unit to generate an estimated atrial signal by applying a constrained independent component analysis algorithm based on the reference atrial signal to the received surface electrocardiogram signal, and to estimate one of the estimated atrial signals as an actual atrial signal, and a method using the same.. .
A system including a sensor interface coupled to a processor. The sensor interface is configured to receive and process an analog electrocardiogram signal of a subject and provide a digitized electrocardiogram signal sampled over a first time period and a second time period that is subsequent to the first time period.
Zoll Medical Corporation
Seat having integrated ekg-electrodes
A bio-measurement data recording device has a seat which has a back surface made of a foam material, a seat surface, and a plurality of back surface sensors embedded in the back surface such that a plurality of leads for an electrocardiogram of a the person can be received. At least two seat surface sensors are embedded in the seat surface.
Almanaa Trading Est. K.s.a.
Method and system to measure ecg and respiration
A method for monitoring the respiration rate of a patient includes attaching a plurality of electrocardiogram (ecg) electrodes and a pressure sensor to a patient, producing a first respiration signal based on variations detected in signals provided by the ecg electrodes attached to the patient, and producing a second respiration signal based on pressure variations detected in the pressure sensor secured to the patient. The method also includes selecting at least one of the first respiration signal and the second respiration signal based on respective signal qualities and producing a respiration rate from the selected signal.
Mindray Ds Usa, Inc.
Congestive heart failure risk status determination methods and related devices
Embodiments relate to devices and methods for monitoring, identifying, and determining risk of congestive heart failure (chf) hospitalization. Methods include determining physiological values of a patient by electrocardiogram (ecg), bioimpedance, and 3-axis accelerometer, filtering the physiological values, comparing physiological values to baseline parameters and determining chf risk.
Medtronic Monitoring, Inc.
Electrocardiogram measuring apparatus and synthesized electrocardiogram generating method
An electrocardiogram measuring apparatus includes: a population coefficient calculating unit which calculates: first population coefficients; and second population coefficients; a personal coefficient calculating unit which calculates: first personal coefficients; and second personal coefficients; and a lead deriving unit which: calculates first personal coefficients of a specific subject based on: a relationship between a magnitude of a ratio of the first population coefficients to the second population coefficients, and a magnitude of a ratio of the first personal coefficients to the second personal coefficients; and second personal coefficients of the specific subject which are calculated based on a leads of the specific subject, the a leads being acquired by electrocardiogram measurement; and synthesizes b leads of the specific subject by using the first personal coefficients of the specific subject.. .
Nihon Kohden Corporation
System and electrocardiogram analysis and optimization of cardiopulmonary resuscitation and therapy delivery
The system and method provide for electrocardiogram analysis and optimization of patient-customized cardiopulmonary resuscitation and therapy delivery. An external medical device includes a housing and a processor within the housing.
Analysis of electrocardiogram signals
A method for graphical representation of a train of ecg complexes having an r wave and a t-p interval and having variable isoelectric baselines. The method involves aligning the complexes in terms of signal amplitude by obtaining a baseline, thereby to provide a graphical representation of said train of ecg complexes; and aligning said complexes temporally using corresponding predetermined points..
Bio Signal Analysis Ltd.
Systems and methods of radiometrically determining a hot-spot temperature of tissue being treated
According to some embodiments, systems for energy delivery to targeted tissue comprise a catheter with an ablation member, a radiometer configured to detect temperature data from the targeted tissue, a processor configured to determine a calculated temperature (e.g., an extreme temperature, such as a peak or trough temperature) within the tissue by applying at least one factor to the temperature data detected by the radiometer, the processor configured to compare the calculated temperature to a setpoint and an energy source configured to energize the ablation member and to regulate delivery of ablative energy to the targeted tissue of the subject based at least in part on the comparison. In some embodiments, the factor depends on at least one characteristic of the targeted tissue.
Meridian Medical Systems, Llc
Method and generating synchronization signal using electrocardiogram signal
An apparatus for generating a synchronization signal based on an electrocardiogram signal of a body by obtaining the electrocardiogram signal, outputting a first peak signal when strength of the electrocardiogram signal becomes larger than that of a reference signal, and generating a first synchronization signal depending on the first peak signal is provided.. .
Electronics And Telecommunications Research Institute
A defibrillating system includes a processor coupled to a memory. The processor and the memory are configured to identify a treatment event associated with treatment of a victim with the defibrillating system, and transmit a representation of a portion of an ecg signal associated with the identified treatment event.
Zoll Medical Corporation
Reduction of mri interference from the electrocardiogram using lead information
A circuit (32) for use in an magnetic resonance (mr) system to reduce mr interference of a physiological signal s(f) includes a first summing/subtraction node (36), a high pass filter (40), and a second summing/subtraction node (42). The first summing/subtraction node (36)inputs a first signal (34) including radio frequency magnetic interference n(f) and a physiological signal s(f), and a second signal (38) including the physiological signal s(f) and an error signal e(f), and subtractively combines the second signal with the first signal to generate a difference signal n(f)−e(f).
Koninklijke Philips N.v.
An external defibrillator includes patient electrodes (20) for obtaining the patient's electrocardiogram (ecg) and for applying a shock to the patient. A microprocessor (24) analyses the patient's ecu using a diagnostic algorithm to detect if the patient's heart is in a shockable rhythm, and shock delivery circuitry (10) is enabled when a shockable rhythm is detected by the diagnostic algorithm.
Heartsine Technologies Limited
System and interactive processing of ecg data
A system and method for interactive processing of ecg data are presented. An electrocardiogram is displayed.
Bardy Diagnostics, Inc.
Method for monitoring an accurate heart rate
A method for monitoring a more accurate heart rate of a human or an animal, wherein at least one heart rate or electrocardiogram (ecg) signal and at least one activity signal is measured and wherein, when said measured heart rate or ecg signal is of low quality, the heart rate or ecg signal is at least partially rejected and replaced by a simulated heart rate or ecg signal, which is calculated from a predetermined relationship between the activity signal and the heart rate or ecg signal. By applying this method in real time using on-line modelling a predetermined relationship is continuously updated to have an accurate modelled heart rate..
A device includes a housing; a core contained within the housing and disposed along at least a portion of the length of the housing, the core configured to rotate relative to the housing; a tab configured to connect to a port of a mobile device; and multiple electrocardiogram (ecg) cables wound around the core. A distal end of each ecg cable is connected to the tab and a proximal end of each ecg cable is connected to at least one of a corresponding ecg electrode and a corresponding pad..
Zoll Medical Corporation
Risk stratification of suspected ami patients
The current invention enables a method to improve early diagnosis and risk stratification of ami in patients presenting with chest pain. A quick and accurate diagnosis/risk stratification means that high risk patients can be assigned to the appropriate treatment pathway and low risk patients can be reassured that they have not suffered an ami and alternative causes of chest pain can be investigated.
Randox Laboratories Ltd.
Universal ecg electrode module for smartphone
Apparatuses and methods for sensing an electrocardiogram (ecg) of a subject using an ecg module that may removably connect to a mobile telecommunications device through a base unit, and which may further then wirelessly communicate with the mobile telecommunications device.. .
Method and detecting atrial fibrillation
Method of determining atrial fibrillation including determining if a patient's pulse beats form an irregular pattern and only if so, indicating the presence of an irregular pulse to the patient and obtaining an electrocardiogram for determining atrial fibrillation. Initially, a pulse is detected at regular time intervals of a first appendage of the patient when motionless using a pulse detector secured to the first appendage and pulse rhythms from a succession of time intervals are detected each corresponding to a respective interval of time between successive pulse beats of a sequence of the pulse beats.
Clothing with minimized motion artifact having textile electrode kit mounted thereto
A textile electrode kit mounted to the clothing includes a contact-type electrode or a non-contact electrode, and the textile electrode kit may be mounted to a clothing having a lower fixed member configured to reduce a motion artifact and a partially three-dimensional clothing structure by means of sewing. On occasions, the textile electrode kit having a non-contact electrode may be inserted into and used in an electrode-mounting pocket or an electrode-mounting tunnel formed at the clothing.
Konkuk University Industrial Cooperation Corp.
Mobile front-end system for comprehensive cardiac diagnosis
A stethoscope front-end recorder device (also referred to as sleeve) for the chest piece of a stethoscope, which is easily installed and removed. The sleeve is attached to the chest piece of a stethoscope for comprehensive diagnosis of heart issues.
Wearable heart failure monitor patch
The invention is directed to a system for acquiring electrical footprint of the heart, electrocardiogram (ekg or ecg), heart sound, heart rate, nasal airflow and pulse oximetry incorporated into a mobile device accessory. The ecg and heart sound signals are conveniently acquired and transmitted to a server via the mobile device, offering accurate heart failure analysis, and sleep disorder breathing indication..
System and patient specific planning and guidance of electrophysiology interventions
A method and system for patient-specific planning and guidance of electrophysiological interventions is disclosed. A patient-specific anatomical heart model is generated from cardiac image data of a patient.
Subcutaneous cardiac sensing and stimulation system
Cardiac systems and methods using ecg and blood information for arrhythmia detection and discrimination. Detection circuitry is configured to produce an ecg.
Cardiac Pacemakers, Inc.
Non-invasive classification of atrial fibrillation by probabilistic interval analysis of a transesophageal electrocardiogram
The invention relates to a computer-implemented method for determining an af complexity value. The method includes applying a template matching algorithm to an ecg signal to obtain a set of candidate deflections and identifying intrinsic deflections within the set of candidate deflections.
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.. .
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.
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.
Needle 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.
Mood 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.
Breathing 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.
Devices 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.
Apparatus 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.
Patient 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.
Non-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
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.
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.
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.
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..
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
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.
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.
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
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.
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..
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..
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..
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.
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..
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.
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.
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.
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.
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.. .
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.
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.
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).
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.
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.. .
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.