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5224486 |
Method and apparatus for classifying heartbeat waveforms
A computer controls a video display having a display screen for displaying ECG heartbeats superimposed over one another. The ECG data is collected during Holter monitoring and stored in a memory....
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5218532 |
Method and system for acquiring MR data in MRI
A change, e.g., a cardiac arrhythmia or a motion in a subject is monitored during an acquisition of MR data in an MRI apparatus, and it is determined whether or not a change occurs in the subject....
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5215098 |
Data compression of cardiac electrical signals using scanning correlation and temporal data compression
A method and apparatus for storing a representation of a cardiac signal by compressing the data using scan correlation and temporal data compression techniques. The method and apparatus sense...
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5214580 |
Process for identifying discrete data representative of an input sample stream
Processing waveform data for compressed display. A parameter to be displayed is measured, digitized, and displayed on a device that does not permit display of all of the data samples; thus, the...
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5189609 |
Medical monitoring system with softkey control
An input device, in particular for a medical monitoring system, comprises a keyboard, a screen and a control processor. The keyboard comprises various hardkeys enabling access to an object mode in...
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5188116 |
Electrocardiographic method and device
A method and apparatus for detecting heart disease from an electrocardiogram (ECG) is disclosed. The method comprises the steps of acquiring the ECG signals, correcting for signal variability...
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5184620 |
Method of using a multiple electrode pad assembly
A method of monitoring natural electrical impulses from a patient's heart, and providing appropriate therapeutic electrical impulses to a patient's heart comprising the steps of placing on the...
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5170794 |
Method and apparatus for deriving a respiration signal and/or artifact signal from a physiological signal
A method for deriving a respiration signal and/or a cardiac artifact signal from a physiological signal, in particular an impedance pneumography signal, includes detection of a heartbeat moment,...
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5164898 |
System for determining hazardous substance exposure rate from concentration measurement and heart rate data
A device for measuring a rate exposed to deleterious materials comprises a heartbeat sensor for sensing heart rates, a deleterious material sensor for sening concentrations of deleterious materials...
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5123420 |
Method and apparatus for processing heart rate traces in a fetal monitor
A fetal monitor capable of recording the heart rate trace, preferably the beat-to-beat heart rate trace, of a fetus and a second heart rate trace of the mother or of a second fetus. Coincidence...
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5058597 |
Long-term electrocardiograph for screening
An electrocardiograph has an R wave detector for detecting an R wave out of an electrocardiogram (ECG) signal being collected from a subject. When the R wave detector detects an R wave, a heart...
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5054496 |
Method and apparatus for recording and analyzing body surface electrocardiographic peak maps
The peak potential values of each cardioelectric wave components detected from the body surface are uniquely presented as a few iso-potential and isochronous contour maps by the electrocardiac peak...
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5052398 |
QRS filter for real time heart imaging with ECG monitoring in the magnetic field of an NMR imaging system and NMR imaging apparatus employing such filter
A pair of Butterworth 4th order filters are cascaded with an absolute value filter to filter the QRS wave of an ECG signal generated in a magnetic field of an NMR imaging system. The NMR system...
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5046504 |
Method and apparatus for analyzing and interpreting electrocardiograms using spectro-temporal mapping
Method and apparatus for analyzing ECG signal data for diagnostic purposes by performing an incrementally moving, short window FFT analysis to produce a set of spectral templates representative of...
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5042498 |
Intelligent electrocardiogram system
An Intelligent Electrocardiogram System that solves the problem of faulty electrical connections between a patient and an ECG instrument is disclosed. The electrode employed by the invention...
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5042497 |
Arrhythmia prediction and prevention for implanted devices
A system for predicting and preventing cardiac arrhythmias for use in combination with an implanted arrhythmia treatment device comprising means for sensing the neural activity of a patient and...
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5042499 |
Noninvasive electrocardiographic method of real time signal processing for obtaining and displaying instantaneous fetal heart rate and fetal heart rate beat-to-beat variability
A fetal heart rate monitor monitors weak fetal electrocardiogram signals in the presence of strong interfering material ECG complexes, general random background muscle noise, and 60 Hz power line...
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5038785 |
Cardiac and respiratory monitor with magnetic gradient noise elimination
A magnetic resonance imaging apparatus (A) generates a uniform magnetic field, causes gradient fields transversely thereacross, excites resonance in nuclei within the image region, receives radio...
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5038791 |
Heart imaging method
A method for providing an image of the human heart's electrical system derives time-of-flight data from an array of EKG electrodes and this data is transformed into phase information. The phase...
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5038800 |
System for monitoring patient by using LAN
A system for monitoring a patient by using a local area network (LAN) to connect a central monitor, located at a nurse's station, to one or more bedside monitors, wherein the bedside monitor...
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5036869 |
Medical wireless telemeter
A medical wireless telemeter includes a transmitter section having one or more different types of transmitters corresponding to different medical body signals to be transmitted as a telegram to a...
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5033473 |
Method for discriminating pace pulse tails
Disclosed is a method and apparatus for discriminating pace pulse tails generated by signals discriminated from QRS complexes by mathematically ascertaining that the signal following the pace pulse...
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5033474 |
ECG cable storage means in a personal health monitor
In a personal health monitor that includes one or more cables for connection to a patient information about whose clinical condition the personal health monitor can monitor, an improvement for the...
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5027824 |
Method and apparatus for detecting, analyzing and recording cardiac rhythm disturbances
Apparatus for detecting, analyzing and recording cardiac events includes a patient-wearable monitor detecting cardiac events and cardiac rhythm and processing information indicative of those events...
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5029082 |
Correlative analysis in multi-domain processing of cardiac signals
An apparatus and method for detecting and processing bioelectric signals, such as ECG, VCG, EEG, etc, comprising: a plurality of electrodes for detecting electric signals from different locations...
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5025794 |
Method for analysis of electrocardiographic signal QRS complex
A method and apparatus for examining the QRS complex of ECG signals to detect minute late potentials. The system functions to filter the QRS signals bi-directionally, and further separately...
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5025795 |
Non-invasive cardiac performance monitoring device and method
A non-invasive cardiac monitoring device for calculating the cardiac performance parameters of heartbeat, stroke volume, and cardiac output for an individual. The device receives a plurality of...
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5020540 |
Cardiac biopotential analysis system and method
Disclosed is a cardiac biopotential analysis system and method for detecting and quantifying in a noninvasive manner nonlinear dynamic patterns of depolarization and repolarization on a beat to...
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5020528 |
Method and apparatus for permitting medical personnel to attend to a patient situated in a hazardous location remote therefrom
An apparatus for permitting medical personnel to attend to an injured individual situated in a hazardous area from a remote location. The apparatus includes a first end adapted to be located at a...
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5020541 |
Apparatus for sensing lead and transthoracic impedances
A method and apparatus for use with medical electrode systems that sense the integrity of lead connections and patient transthoracic impedance is provided. In an ECG electrode application, a...
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5018724 |
Arrangement for measuring physiologically generated weak biomagnetic signals while the examination subject is at rest and exercising
A multi-channel arrangement for measuring weak magnetic fields in living tissues, and for localizing the current sources which cause the magnetic fields by evaluating the topical magnetic values...
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5016642 |
Slow motion cardiac imaging
Apparatus and method for representing slow motion of an oscillating heart by forming strobed images of the heart at a sequence of uniformly spaced times with controllable time interval lengths that...
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5014284 |
Discrete slope delta modulation with recovery means
A method and apparatus for processing electrical signals by modifying delta modulation to discrete slope delta modulation includes converting its electrical signals into compressed digital...
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5010888 |
Method and apparatus for detection of posterior ischemia
An apparatus for automatically detecting a posterior ischemia includes a multi-element esophageal electrode coupled to an artifact suppressing circuit and a cardiac stimulator. Output from the...
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5010887 |
Noise discrimination in implantable pacemakers
A noise discrimination circuit determines if sensed electrocardiographic (ECG) pulsed signals sensed within a pulse generator are valid ECG signals, i.e., valid P-waves or R-waves, or noise. The...
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5007430 |
Rhythmic biofeedback technique
A rhythmic biofeedback technique for inducing relaxation to counteract the adverse physiological and psychological effects of chronic stress on an individual. In this technique, the heart beat of...
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5007431 |
Apparatus and method for updated recording of irregularities in an electrocardiogram waveform
A system for detecting, recording, and maintaining, on an updated priority basis, segments of electrocardiogram (ECG) waveforms containing unusual activities, and including the characteristics of...
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5003984 |
Apparatus for alerting a doctor by radio to provide an alarm for a patient
An apparatus for alerting a doctor which provides an alarm corresponding to a patient, and receives living body information signals transmitted through a transmitter. The apparatus alerts a doctor...
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5003983 |
Cardiac monitoring system
A cardiac monitor system reads an EKG signal and conditions the EKG waveform in a manner that accentuates the information on ST segment location, within the waveform. ST segment location is used to...
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5002062 |
Ambulatory electrocardiographic apparatus
An ambulatory electrocardiographic apparatus includes a main body which has a card mounting section for an IC memory card. The IC memory card can be inserted into the card mounting section and can...
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5002063 |
Electronic physiological data monitoring
An ECG system is disclosed having amplification circuitry which, while effectively blocking electrical transients resulting from undesirable low frequency electrical artifacts, nevertheless...
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5000182 |
Cardiac synchronization magnetic resonance imaging
A cardiac monitor (62, 64) monitors the cardiac cycles of a patient in an examination region (10). Each cardiac cycle includes an R-wave (40) at the beginning of the end-diastole. A conditioning...
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4999772 |
Sleep screening system with time based modulated data
A portable sleep monitoring system for recording on tape, transcribing and charting a plurality of physiologic data channels recorded relative to a known constant, user-transparent time base....
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4998535 |
Thrombolysis predictive instrument
An instrument for predicting the benefit of using thrombolytic therapy to treat a patient with a heart condition including a first input port for receiving inputs derived from electrocardiograph...
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4993423 |
Method and apparatus for differential lead impedance comparison
A differential lead impedance comparison apparatus (10) senses lead impedance and compensates for patient-to-patient and electrode variability. A bridge circuit (12) is connected to one end of...
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4991580 |
Method of improving the quality of an electrocardiogram obtained from a patient undergoing magnetic resonance imaging
A method for improving the quality of electrocardiogram (ECG) signals for input to a cardiac monitor and obtained from a patient undergoing magnetic resonance imaging (MRI) wherein the ECG leads...
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4991587 |
Adaptive filtering of physiological signals in physiologically gated magnetic resonance imaging
A patient (B) is disposed in a region of interest of a magnetic resonance apparatus (A). During an imaging sequence, changing magnetic field gradients and radio frequency pulses are applied to the...
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4989610 |
Method and system of ECG data review and analysis
A method and computerized system for ECG data review and analysis are provided. In preferred embodiments, a transformation is performed on beat data and the transformed data are categorized into...
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4987901 |
Method and apparatus for selecting a physiologically standardized sensor of a multi-sensor electrocardiogram sensor set
A method and apparatus for identifying physiologically standardized electrode positions from a multisensor electrocardiogram electrode sensor set. The P-, Q-, R-, S-, and T-wave components of each...
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4987902 |
Apparatus for transmitting patient physiological signals
An apparatus (10) for transmitting a patient physiological signal is provided. A converter (12) includes a front end circuit (28) that receives and conditions a patient physiological signal, V P ,...
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