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5778881 |
Method and apparatus for discriminating P and R waves
This is a method and apparatus for the automated discrimination of cardiac events of interest, including P-waves, R-waves, T-waves, and specific arrhythmic sequences, in EGM signals for data...
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5778880 |
Heart beat transmitter
An improvement of heart beat transmitter includes a circuit board, a pair of conductive rubber posts, a housing, a pair of fastening straps and a pair of conductive rubber plates. The housing is...
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5772603 |
Device for filtering ECG signals
A device for filtering ECG signals has an A/D converter and a filter unit connected to the converter's output. The filter unit includes a filter, or a combination of filters with a non-linear phase...
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5766133 |
Circuit for testing cables for physiological signal sensing electrodes
A test circuit and method for the integrity of electrode cables of a typical Holter machine for the recording of physiological signals, notably cardiac activity. This machine comprises: a plurality...
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5762068 |
ECG filter and slew rate limiter for filtering an ECG signal
A linear phase high pass filter is disclosed using a slew rate limiter and a linear phase low pass filter in parallel with a delay for removing baseline wander from an ECG signal. The linear phase...
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5749367 |
Heart monitoring apparatus and method
A heart monitoring apparatus and method is disclosed wherein an electrocardiograph signal is obtained from a patient and processed to enhance the salient features and to suppress noise. A plurality...
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5748103 |
Two-way TDMA telemetry system with power conservation features
A two-way medical telemetry system is provided for displaying and monitoring, at a central location, physiologic and other patient data of multiple, remotely-located patients. The system comprises...
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5743859 |
Integrated electrical signal switching and amplifying system
A signal management system is disclosed which integrates a patient switching box and an amplification unit into a single compact enclosure sufficiently small to reside by the patient table in an...
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5743269 |
Cardiotachometer
An improved cardiotachometer comprises a transmitting section and a receiving section. The transmitting section includes a detection circuit for detecting electrocardiographic signals obtained from...
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5743268 |
Noninvasive hemodynamic analyzer alterable to a continuous invasive hemodynamic monitor
A noninvasive method for calculating Actual Stroke Volume and Cardiac Output of a human heart uses computerized algorithms, and is implemented in a continuous noninvasive hemodynamic analyzer which...
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5741211 |
System and method for continuous monitoring of diabetes-related blood constituents
A system and method for sensing and providing an indication of one or more diabetes-related blood constituents of a patient, the system being based upon an ECG sensor which processes patient ECG...
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5741214 |
Accessory pathway detecting/cauterizing apparatus
An accessory pathway detecting apparatus measures action potentials from first and second electrode leads, and outputs the obtained action potentials, as potential maps, to a CRT or a printer such...
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5735285 |
Method and hand-held apparatus for demodulating and viewing frequency modulated biomedical signals
Method and apparatus for transmission of biomedical waveform data from a patient to an attending physician wherein the waveform data audio signal is frequency modulated for subsequent wireline or...
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5732696 |
Polysomnograph scoring
A method and apparatus for scoring EEG, EMG and EOG data, for sleep stages, in order to simulate the scoring results achieved by human scorers in which a general determination is initially made of...
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5724975 |
Ultrasonic detection system for transmyocardial revascularization
An ultrasonic detection system for transmyocardial revascularization (TMR) is disclosed using a detector in the TMR handpiece for detecting concealed coronary blood vessels as well as verifying...
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5724984 |
Multi-segment ECG electrode and system
A multi-segment ECG electrode includes a flexible basepad, a central segment defined on a surface of the basepad, and exterior segments defined on the surface of the basepad. The exterior segments...
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5722405 |
Method and apparatus for acquisition and processsing of event data in semi list mode
A system for acquisition, processing and display of gated SPECT imaging data for use in diagnosing Coronary Artery Disease (CAD) in nuclear medicine. The present invention provides a physician with...
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5722997 |
Method and apparatus for cardiac impedance sensing
A method and apparatus for measuring impedance of heart tissue or the leads associated with a cardiac stimulation apparatus involves charging a capacitor, storing the value of the voltage across...
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5720771 |
Method and apparatus for monitoring physiological data from an implantable medical device
A monitoring system is provided that monitors the condition of a patient by analyzing physiological data received from implantable medical devices. The monitoring system has at least one monitoring...
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5720292 |
Beat onset detector
A method for identifying an onset of a first heart beat includes sensing blood pressure over time to produce a plurality of blood pressure samples, each sample having a corresponding blood pressure...
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5718234 |
Physiological data communication system
The present invention provides for a communication system for conveying biomedical data between a plurality of patient monitors and a centralized base station. The communication system includes a...
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5715829 |
Method and apparatus for detecting heartbeats in an ECG waveform using an activity function and on-time search
A method and apparatus for detecting heartbeats obtains ECG data from a plurality of ECG waveforms, which are in turn obtained from signals received from a plurality of ECG electrodes. QRS...
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5713365 |
Pocket instrument for detecting an electric biological signal, in particular an electrocardiographic signal
An instrument for detecting an electric biological signal, and wherein a pocket casing housing an electronic circuit presents a rectangular wall fitted with two flat electrodes and a display. The...
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5709216 |
Data reduction of sensed values in an implantable medical device through the use of a variable resolution technique
An implantable device which acquires physiological data and status information. The physiological data is compressed, reducing the memory requirement of the implantable device and/or increasing the...
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5709213 |
Low noise, high bandwidth, augmented lead circuit for acquisition of cardiac pacing artifacts
Disclosed are a method of and apparatus for deriving augmented lead electrocardiograph (ECG) signals from electrical signals sensed at three skin surface, limb electrodes attached to a patient's...
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5706823 |
Electrophysiology filtering system
A versatile electrophysiology system including an amplification system, an ablation machine, a filter box, a display monitor and a chart recorder as well as an optional data management and analysis...
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5704351 |
Multiple channel biomedical digital telemetry transmitter
A digital telemetry transmitter for transmitting eight channels of diagnostic quality electrocardiographic data has input circuitry for receiving analog EKG signals originating at electrodes on the...
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5701907 |
Electrocardiographic waveform monitoring method and system
A method and system for use in an EKG system are provided for selecting from a number of different voltage threshold detectors that detector likely to yield the most reliable data to be utilized in...
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5701906 |
Method and apparatus for acquiring and processing electrocardiographic signals
Method and apparatus for acquiring and processing electrocardiographic signals comprising the steps of detecting and recording a first basic electrocardiographic waveform of a subject tested under...
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5701894 |
Modular physiological computer-recorder
An ambulatory physiological computer recorder that includes multiple selective plug and play signal input conditioners, a microprocessor system with operating and analyzing software and a removable...
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5697957 |
Adaptive method and apparatus for extracting an evoked response component from a sensed cardiac signal by suppressing electrode polarization components
In a method and apparatus for suppressing electrode polarization components in a sensed cardiac signal, the sensed cardiac signal is added to either a differentiated or autocorrelated sensed...
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5699014 |
Linear amplifier
A low-noise, low-power complementary metal-oxide-semiconductor (CMOS) integrated circuit common source differential amplifier is disclosed which is capable of amplifying low amplitude cardiac...
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5694942 |
Analysis of heart waveforms
A method and apparatus of analysing Ventricular Late Potential (VLP) including determining a parameter related to the complexity of the VLP as a parameter for clinical evaluation. The method may...
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5694941 |
Physiological waveform delay indicator/controller
In a patient monitoring system which includes a signal transmission path between that portion of the patient monitoring system which acquires the physiological signals and that portion of the...
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5690118 |
Method and apparatus for correcting non-physiological variations in ECG signals
In a method for correcting for non-physiological variations in ECG signals, signals recorded during a heartbeat, or a characteristic part of a heartbeat, are conditioned and digitized. Signal...
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5690683 |
After potential removal in cardiac rhythm management device
An apparatus effectively removes after potential occurring after a electrical pulse is delivered in a cardiac rhythm management system such as a pacemaker system or cardioverter/defibrillator...
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5687735 |
Robust time-diversity filter and method for removing electromagnetic interference
An apparatus and method for the filtering of signals collected during a period that includes a quiet ("signal-free") epoch and an event epoch is disclosed. The apparatus includes a means for...
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5687737 |
Computerized three-dimensional cardiac mapping with interactive visual displays
An optimal electrophysiologic mapping system for map-directed arrhythmia surgery and cardiac research allows rapid and accurate interpretation of cardiac activation sequences. The system can...
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5687738 |
Apparatus and methods for analyzing heart sounds
Apparatus for assisting in the analysis of heart sounds monitors heart sounds, ECG, and respiratory data. Once digitized, this data is processed and analyzed to determine timing relationships...
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5687734 |
Flexible patient monitoring system featuring a multiport transmitter
A flexible patient monitoring system which interfaces a telemetry subsystem with a network by way of a telemetry transmission receiving system and a network controller. The telemetry subsystem...
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5680864 |
Method for processing event data using a removable data storage medium and clock
A method for gathering event data using a data gathering instrument having an instrument clock and an instrument data storage medium, the method comprising the steps of: gathering event data using...
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5678562 |
Ambulatory physiological monitor with removable disk cartridge and wireless modem
An ambulatory physiological monitor includes a high capacity, plug connectable magnetic disk cartridge for storing physiological data and analysis software. The disk cartridge is easily removable...
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5678738 |
Plastic clip
A plastic clip constructed in accordance with the present invention comprises an elongated frame portion. The elongated frame portion includes a guide channel having a closed end and an open end....
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5669392 |
Device for varying the threshold detection level of a sensor
In a method and apparatus for automatically adjusting the threshold detection level of a detector unit for detecting physiological events, e.g. heart contractions, a cardiac signal is sensed and...
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5669393 |
Programmable interface for a physiological signal recording device
A programmable interface for typical Holter machine for recording a physiological signal, notably of cardiac activity. This apparatus (10) comprises the normal plugs (14) for connection to external...
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5666958 |
Interface module for electrically connecting medical equipment
A temporary transvenous pacing system for obtaining a graphical record verifying the placement of temporary cardiac pacing lead within the ventricular cavity of a heart and for intracardiac...
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5662108 |
Electrophysiology mapping system
A mapping catheter is positioned in a heart chamber, and active electrode sites are activated to impose an electric field within the chamber. The blood volume and wall motion modulates the electric...
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5660184 |
Pacemaker pulse detection and artifact rejection
A method and apparatus for detecting a pacemaker pulse in an electrocardiogram signal (ECG signal) from characteristic artifacts introduced into said ECG signal by the filtering process to allow...
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5655534 |
Method and apparatus for separating the different components of evoked response and spontaneous activity brain signals as well as of signals measured from the heart
The present invention is related to a method and an apparatus for separating the different components of evoked responses and spontaneous activity of the brain, as well as signals measured from the...
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5649544 |
Method of and arrangement for diagnosing heart disease
Heart disease is non-invasively, accurately diagnosed at an early stage. A plurality of functions descriptive of the patient are mathematically determined. A set of indices for each function is...
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