Matches 401 - 450 out of 528 < 1 2 3 4 5 6 7 8 9 10 11 >
Match Document Document Title
4979510 Apparatus and method for recording monophasic action potentials from an in vivo heart  
The apparatus comprises a probe having a tip portion, a first electrode mounted on a terminal free end of the tip portion and a second electrode spaced along the tip portion from the first...
4960129 Methods of observing autonomic neural stimulation and diagnosing cardiac dynamical dysfunction using heartbeat interval data to analyze cardioventilatory interactions  
Methods of isolating individual neural impulses are disclosed. In a preferred embodiment, methods of observing the response of the heart to autonomic neural control are presented. The present...
4958637 MR examining apparatus of heart beat synchronous type  
A magnetic resonance examining apparatus of heart beat synchronous type in which one heart beat period is substantially equally divided to provide a plurality of phases, and at least some of those...
4951672 Controlled impedance monitoring lead wires  
An electrode assembly, particularly useful in nuclear magnetic resonance apparatus, for sensing a physical characteristic of a live study subject includes an electrode positioned in electrical...
4940059 Polygraph with improved cardiac monitoring  
A polygraph for detecting and displaying the beat by beat changes in the relative rate of increase of the blood pressure of the heart. Electronic circuitry for measuring the derivative of the blood...
4936311 Method of analyzing regional ventricular function utilizing centerline method  
A method of analyzing regional ventricular function utilizing centerline method capable of producing sufficiently natural results in the vicinity of the apex. The method includes the step of...
4934376 Method and apparatus for detecting heartbeats  
Method and apparatus for detecting the occurrence of heartbeats in an ECG signal which may also include pacer artifacts, comprising analysis of the ECG signal for providing a heartbeat signal...
4934374 Method of analyzing cardiac data using correlation plots  
A method of converting apparently chaotic time series data to a visual texture which, when displayed, can be really analyzed empirically. Correlation plots of vectors derived from time series of...
4930517 Method and apparatus for physiologic system identification  
A method and apparatus for estimating transfer functions among multiple physiologic or biologic signals in the presence of feedback. The invention comprises the injection of broad band purturbation...
4926868 Method and apparatus for cardiac hemodynamic monitor  
A method and apparatus for cardiac hemodynamic monitoring is described. It is based on the complex field amplitudes of microwaves propagated through and scattered by thoracic cardiovascular...
4911174 Method for matching the sense length of an impedance measuring catheter to a ventricular chamber  
A method for matching the distance spanned by a plurality of surface electrodes on an impedance measuring catheter to the size of a ventricular chamber to be measured is disclosed. The catheter...
4905706 Method an apparatus for detection of heart disease  
A method and apparatus for detection of coronary artery disease. The apparatus records and analyzes that portion of the phonocardiogram lying between about 100 to 600 Hz. An electrocardiogram is...
4903704 Method and apparatus for MR imaging  
An MR imaging method and apparatus especially adapted for invivo cardiac MR imaging, rejects data acquired during periods of arrhythmia while maintaining the magnetic fields and pulsing of the RF...
4899753 Electrocardiographic electrode  
An electrocardiographic electrode, which is held in close contact with a person's skin for deriving a weak voltage from an inner part of the person, is disclosed. The electrode includes a viscous...
4895161 Transportable data module and display unit for patient monitoring system  
A monitoring system for providing continuous monitoring of a patient, including periods of transport, includes a data acquisition and processing module receiving physiological data from the...
4890630 Bio-electric noise cancellation system  
A device and method are provided for bio-electric monitoring apparatus to cancel bio-electric noise on the body of a patient. The device comprises a plurality of monitoring electrodes for reception...
4857716 Patient identification and verification system and method  
A patient identification system for relating items with patients and ensuring that an identified item corresponds to an identified patient. The patient identification system includes a computer...
4777957 Method for measuring and imaging fluid flow  
A time-of-flight magnetic resonance pulse sequence is used to detect arterial flow in an image of a slice of tissue. By timing the pulse sequence with the cardiac cycle and by holding the...
4773427 Water-proof device for transmitter  
A water-proof device for a transmitter is disclosed which comprises a plurality of water-proof electrodes attached to the surface of a man for deriving minute electrocardiogram signals. A...
4751928 Multielectrode system for surface registering of electric heart potentials  
A multielectrode system for surface registering of electric heart potentials comprising electrodes which are in an elastic holder of electrodes arrranged slidably and are maintained in their...
4724844 Vital sign modular unit  
A portable vital sign modular unit including a vital sign display case and a modular case. The vital sign modular unit is slidably mounted on a mounting plate. The mounting plate provides an...
4716904 Heart output and circulatory impedance measuring method and apparatus  
The invention shows a heart output and circulatory impedance measuring med and associated apparatus based on consecutive subtraction and synchronous summation of digitized ventriculographic images...
4716903 Storage in a pacemaker memory  
An implantable pacemaker which stores in memory the representation of an ECG signal by compressing the data. Whenever the input signal changes by a threshold amount from the last time data was...
4712560 Apparatus and method of acquiring physiological gating signals for magnetic resonance imaging of moving objects  
An apparatus and method are disclosed which provide signals corresponding to physiological motion of an imaging slice in an MR system for use in synchronizing acquisition of MR data with movement...
4712562 Outpatient monitoring systems  
The invention provides a system and a method for obtaining from the patient's body information pertaining to the blood pressure and heart rate of a patient for the purpose of enabling a physician...
4709703 Imaging system and method using radiopaque microspheres for evaluation of organ tissue perfusion  
A radiologic imaging system and method (20) using radiopaque microspheres for evaluating organ tissue perfusion. Radiopaque microspheres are administered to organ tissue (22) which is then scanned...
4695955 Electronic device providing a universal interface between sensors and an acquisition and processing unit of the signals originating from said sensors  
An electronic device provides a universal interface between sensors and an acquisition and processing system of the signals originating from the sensors, wherein the various sensors are connected...
4694837 Cardiac and respiratory gated magnetic resonance imaging  
A magnetic resonance imaging apparatus (A) generates a uniform main magnetic field, gradient fields transversely thereacross, excites resonance in nuclei within an image region, receives radio...
4688579 Input device for hard-wire patient monitoring system  
An input device for supplying detected signals from electrodes and transducers attached to a patient to a patient monitoring system used in an ICU or a CCU includes a case having a plug-in...
4686998 Patient temperature and heartbeat rate monitoring system  
Hospital patient temperatures and heartbeat rates are monitored by providing each patient with a battery powered transmitter containing a reference resistance and to which two sensor electrodes are...
4674518 Method and apparatus for measuring ventricular volume  
A method and apparatus for the instantaneous measurement of venticular volume using an intracavity electrical impedance catheter having plural pairs of spaced surface electrodes driven by a...
4664125 Flow-occluding method for the diagnosis of heart conditions  
A method for analyzing the biomechanical behavior of the cardiac muscle and for diagnosing pathological conditions of the heart. The apparatus measures and records the rise and fall of...
4662378 Device for monitoring body signals  
A necklace device has two skin electrodes mechanically tethered to it at relatively widely separated locations to detect the wearer's heart beat or another body signal. The electrodes are...
4649930 Apparatus for beat buffering techniques varified by arrhythmias detection for stopaction frames of cardiac function  
From a heart sound signal input the occurrence of a first occurring heart sound is detected. Thereupon a predetermined heart sound enable window time is established, which for a first detection...
RE32361 Implantable telemetry transmission system for analog and digital data  
An improved telemetry transmission system for transmitting electrocardiographic information, indications of the occurrence of the pacing pulse and for transmitting digitially encoded information...
4639223 Simulated heart display system  
In a heart display system a computer is operable to simulate different selected hearts, each with a different pattern of electrophysiological pathways, which conduct waves of depolarization. The...
4638808 Circuit for separating one type signal component from another  
A signal component separating circuit is responsive to a signal having a pulsing component and a reciprocating component for providing a signal corresponding to the pulsing component. The circuit...
4637400 For characterizing a heart condition  
A heart is medically imaged to provide outlines of the end systole, mid systole and end diastole images of the heart. There is provided for each outline a sequence of functional relationships for...
4592364 Apparatus for the diagnosis of heart conditions  
An apparatus for analyzing the biomechanical behaviour of the cardiac muscle and for diagnosing pathological conditions of the heart. The apparatus measures and records the rise and fall of...
4573474 Cable harness for an electrocardiogram device  
A cable harness device for use with an EKG machine in which the cable harness device includes a central unit having spring biased laterally extending arms, side arms perpendicularly attached to the...
4561851 Apparatus for demonstrating and/or teaching alleviation of pain with transcutaneous electrical nerve stimulators  
An apparatus for demonstrating and teaching the application of transcutaneous electrical nerve stimulation to a human or animal body includes a representation of such body with receptors thereon at...
4535783 Personal electrocardiology recorder  
A personal electrocardiology recorder having body electrodes for detecting heart action signals, an amplifier, a signal converter for converting the detected signals into signals recordable on...
4450527 Noninvasive continuous cardiac output monitor  
The invention provides apparatus and methods for using the electrical bioimpedance measurements to monitor parameters associated with blood flow in a segment of body tissue. The invention...
4403184 Autocorrelation apparatus and method for approximating the occurrence of a generally periodic but unknown signal  
A method and an apparatus for indicating in real time the occurrence of and measuring the frequency or period of the basic oscillation of a generally periodic unknown signal with statistically...
4372324 Analog peak voltage detector in a defibrillator  
A circuit for detecting and holding the peak voltage of an analog signal is provided. A constant current source controlled by a digital voltage comparator charges a capacitor. The capacitor is...
4351343 ECG Patient monitoring lead assembly  
A multi-contact, feed through connector within a junction box connects patient monitoring electrode leads to a bulk cable which is coupled to ECG apparatus. Access to the interior of the junction...
4343315 Method of and apparatus for measuring the physical condition of a person  
The invention relates to an apparatus for testing the physical condition of a person and a method for using the apparatus. The apparatus comprises a portable heart monitor for attachment to a...
4319580 Method for detecting air emboli in the blood in an intracorporeal blood vessel  
A system for detecting and quantifying air emboli in blood vessels which uses either an intravascular catheter 22 or an esophageal catheter 50. In a preferred embodiment, the intravascular catheter...
4318412 Arrangement for cardiac electrode implementation  
An arrangement is provided for optimizing placement of cardiac electrodes and for improved signal processing. In particular, an arrangement is provided for electrode placement and signal processing...
4301809 Esophageal monitoring apparatus  
This application discloses an esophageal stethoscope for audibly and electronically monitoring a patient's cardiovascular functions. The stethoscope comprises a flexible tube which is dimensioned...
Matches 401 - 450 out of 528 < 1 2 3 4 5 6 7 8 9 10 11 >