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5282840 |
Multiple frequency impedance measurement system
A physiological monitoring system for monitoring the condition of a patient's body tissue. The device includes electrodes for contacting the tissue to be monitored, circuitry for generating...
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5275158 |
Defibrillation electrode switch condition sensing
Method and apparatus for detecting the open or closed state of a pair of manually-operated switches 116, 118 associated with a pair of defibrillation pulse electrodes, the switches being normally...
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5269301 |
Multimode system for monitoring and treating a malfunctioning heart
A system for monitoring a patient and treating the malfunctioning heart of the patient, either in an automatic mode or in a semiautomatic mode, includes means which derive at least one electrical...
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5251625 |
Apparatus and method for controlling tachyarrhythmia confirmation in response to patient history
A method and apparatus for delivering electrical therapy to the heart are disclosed. The apparatus detects and confirms the arrhythmia. However, during confirmation, if the arrhythmia is present...
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5251621 |
Arrhythmia control pacer using skeletal muscle cardiac graft stimulation
An antiarrhythmia pacemaker and method detect and confirm the occurrence of an abnormal condition of a patient's heart selected from the group comprising tachycardia, fibrillation and precursors...
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5251624 |
Pulse generator for use in an implantable atrial defibrillator
A pulse generator for use in implantable atrial defibrillator provides cardiovertinq electrical energy to the atria of a heart through at least one lead having a pair of electrodes associated with...
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5249573 |
Defibrillation discharge circuit test
Method and apparatus for discharging a defibrillation discharge circuit 30 across a short circuit load 166 for monitoring defibrillation pulses 180 generated by the circuit to test that the pulses...
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5247945 |
Electrode arrangement for a defibrillator
An electrode arrangement for a cardiac defibrillator includes one or more physiological sensors disposed in an electrode carrier for planar application against the exterior of the heart. The sensor...
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5243980 |
Method and apparatus for discrimination of ventricular and supraventricular tachycardia
A method for discrimination between ventricular and supraventricular tachycardia and an apparatus for performing the method. In response to the detection of the occurrence of an tachycardia,...
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5243976 |
Tricuspid flow synchronized cardiac electrotherapy system with blood flow measurement transducer and controlled pacing signals based on blood flow measurement
A cardiac electrotherapy system has flow velocity measurement capability for measuring a velocity of blood flow at a region of a tricuspid valve of a heart. A pacing system is provided which...
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5239996 |
Controllable network of related medical patient attached devices for coordinated control
A primary central controller switch box for providing a centralized means for alternatively coupling a defibrillator, a plurality of pacers and recorders in conjunction with a quadripolar...
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5179946 |
Apparatus and method for arrhythmia detection by variations in the transcardiac impedance between defibrillation patches
An implantable device for the treatment of malfunctions of a patient's heart is disclosed. The device employs defibrillation patch electrodes positioned on the outer surface of the heart generally...
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5178149 |
Transesophageal probe having simultaneous pacing and echocardiographic capability, and method of diagnosing heart disease using same
Transesophageal echocardiographic probe having simultaneous cardiac pacing and echocardiographic capability. The inventive probe is provided with transducer means to provide echocardiographic...
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5176137 |
Apparatus for discrimination of stable and unstable ventricular tachycardia and for treatment thereof
A method and apparatus for discriminating between stable and unstable ventricular tachycardias based on a measurement of oxygen saturation. Reference values for average oxygen saturation level and...
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5163429 |
Hemodynamically responsive system for treating a malfunctioning heart
A system for treating a malfunctioning heart is based on hemodynamics, the pressure at a site in a patient's circulatory system being sensed. A signal is developed representative of short term mean...
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5156148 |
System for treating a malfunctioning heart
A system for treating the malfunctioning heart of a patient includes means which derive at least one electrical signal from the patient's heart and means which derive at least one physiologic...
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5133350 |
Mode switching pacemaker
A mode switching bradycardia pacemaker especially adapted for incorporation in an antitachyarrhythmia pacing and/or cardioversion/defibrillation system, provides AAI pacing in the absence of an...
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5111815 |
Method and apparatus for cardioverter/pacer utilizing neurosensing
A method and apparatus for cardioverter/pacemaking utilizing neurosensing. The invention utilizes the baroreceptor nerves found in the body. A neurosense electrode is placed around the carotid...
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5085213 |
Hemodynamically responsive system for and method of treating a malfunctioning heart
A system for a method of treating a malfunctioning heart is based on hemodynamics, the pressure in the right side of a patient's circulatory system being sensed. A first signal is developed...
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5058583 |
Multiple monopolar system and method of measuring stroke volume of the heart
A multiple monopolar system and method for measuring stroke volume of a patient's heart. An intracardiac impedance catheter is provided with a plurality of monopolar electrodes axially spaced along...
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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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5014698 |
Method of and system for monitoring and treating a malfunctioning heart
A system for treating the malfunctioning heart of a patient includes means which derive at least one electrical signal from the patient's heart and means which derive at least one physiologic...
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4967748 |
O.sub.2 level responsive system for and method of treating a malfunctioning heart
A system for and method of treating a malfunctioning heart is based on hemodynamics, the O 2 in blood at a site in a patient's circulatory system being sensed. A signal is developed representative...
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4895151 |
Apparatus and method for therapy adjustment in implantable
Apparatus and method for treating tachyarrhythmias wherein the presence of a patient tachyarrhythmia is detected and a first antitachyarrhythmia therapy (antitachycardia pacing) is given at a first...
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4834100 |
Apparatus and method of defibrillation
A bi-polar coaxial cable or catheter is passed transvenously into or proximate the heart, and the electrodes or poles of the cable are so positioned to apply electrical energy to the heart for...
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4798206 |
Implanted medical system including a self-powered sensing system
Self-contained, self-powered, flexible electrical control signal generating means are located in the right ventricle of a heart and generate electrical control signals solely by mechanical...
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4754753 |
System for sensing electrical depolarization wave signals and their direction
Apparatus and method for sensing the probable onset of ventricular fibrillation or other harmful tachyarrhythmias and delivering electrical cardioverting stimulation pulses in response thereto. The...
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4619265 |
Interactive portable defibrillator including ECG detection circuit
A portable, interactive medical electronic device exemplified by a defibrillator. The device obtains information about a patient's condition, such as ECG and transthoracic impedance data, directly...
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4610254 |
Interactive portable defibrillator
A portable, interactive medical electronic device exemplified by a defibrillator. The device obtains information about a patient's condition, such as ECG and transthoracic impedance data, directly...
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4473078 |
Cardiac arrhythmia analysis system
A method and apparatus for analyzing cardiac electrical activity and other life signs, and triggering a therapeutic current. A signal representative of cardiac electrical activity is analyzed by...
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RE30750 |
Cardiac resuscitator and monitoring apparatus
The disclosed apparatus attaches to the patient for monitoring the patient's condition and administering the correct electrical stimulation to a suspected heart attack victim as soon as possible...
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4291699 |
Method of and apparatus for automatically detecting and treating ventricular fibrillation
Method of and apparatus for automatic defibrillation of the cardiac ventricles of a heart wherein both the mechanical and electrical activities of the ventricles are sensed and used as operating...
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RE30387 |
Automatic cardioverting circuit
Pulse generating apparatus which provides electrical heart-stimulating pulses only in the absence of normal heart activity. If the patient's heart has developed a life threatening arrhythmic...
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RE30372 |
Automatic cardioverting circuit
Pulse generating apparatus which provides electrical heart-stimulating pulses only in the absence of normal heart activity. If the patient's heart has developed a life threatening arrhythmic...
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4114628 |
Demand pacemaker with self-adjusting threshold and defibrillating feature
A implantable ventricular stimulating, ventricular sensing, inhibited heart pacer providing electronically generated stimulating pulses of varying energies depending upon the heart response. The...
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3942536 |
Cardioverting device having single intravascular catheter electrode system and method for its use
Apparatus and method for either manually or automatically initiating the cardioversion of a malfunctioning heart. The apparatus includes a single intravascular catheter electrode system which...
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3805795 |
AUTOMATIC CARDIOVERTING CIRCUIT
Pulse generating apparatus which provides electrical heart-stimulating pulses only in the absence of normal heart activity. If the patient's heart has developed a life threatening arrhythmic...
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3614955 |
Title is not available
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3614954 |
Title is not available
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