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5800464 |
System for providing hyperpolarization of cardiac to enhance cardiac function
An implantable system providing cardiac anodal stimulation (AS) as a system for effecting hyperpolarization of myocardial cells of a heart chamber to enhance the relaxation thereof in the diastolic...
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5797970 |
System, adaptor and method to provide medical electrical stimulation
A system for providing medical electrical stimulation, the system features a pulse generator, the pulse generator generating electrical stimulation pulses of a first amplitude and a second...
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5782880 |
Low energy pacing pulse waveform for implantable pacemaker
A tissue electrical stimulator and electrical pulse waveform are described. The stimulator or pulse generator may deliver the pules preferably through an endocardial electrode to pace a heart but...
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5782885 |
Rate responsive heart stimulation device using neural network and IEGM classifier
In a method for classifying IEGM waveforms in dependence of the workload of a patient, a predetermined number of IEGM-signals, each signal extending over at least one segment of one heart beat...
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5782881 |
Pacemaker with safety pacing
In a cardiac pacemaker, a monitoring window is defined during the a-v delay during which signals sensed in the ventricular channel are monitored. If an abnormal signal is sensed during this window,...
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5776168 |
EGM recording system for implantable medical device
An EGM recording system in an implantable medical device of the type comprising an implantable pulse generator (IPG) and a lead system including one or more sensing leads each having a proximal end...
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5776167 |
System and method for alleviating the effects of pacemaker crosstalk
Methods and apparatus are provided for alleviating the effects of crosstalk in an implantable stimulation device. An autoblanking approach is provided whereby the total blanking interval is made up...
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5772691 |
Implantable cardiac stimulator with polarity detection for detecting ectopic beats
An implantable medical device for electrically stimulating the heart to beat including a sense circuit for detecting cardiac electrical activity. The sense circuit includes a sense amplifier, band...
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5766227 |
EMI detection in an implantable pacemaker and the like
An implantable pacemaker receives electrical signals from a patient's heart through an electrode, the signals being either intrinsic cardiac signals or repetitive noise signals, due for instance to...
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5766042 |
Tool-less locking and sealing assembly for implantable medical device
A connector assembly for effectuating electrical and mechanical coupling between an implantable device and a lead comprises a main body portion and a rotating lever which collectively define a...
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5755763 |
Pacemaker connector with sealable access openings and methods for its use
A pacemaker lead is disclosed of the type comprising a flexible cord formed of at least one spiralled electric conductor and surrounded by a sheath of insulating material and connected, at a...
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5755761 |
Atrial pacing catheter and method having multiple electrodes in the right atrium and coronary sinus
An atrial catheter for insertion into the coronary sinus carries free-floating sensing electrodes and one or more pacing electrodes in contact with the tissue of the coronary sinus.
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5755738 |
Automatic sensing level adjustment for implantable cardiac rhythm management devices
An implantable cardiac rhythm management device 10 includes a microprocessor-based controller 28 adapted to receive digitized electrogram signals from leads 14 placed on or in the heart and...
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5749906 |
Dual chamber pacing system and method with continual adjustment of the AV escape interval so as to maintain optimized ventricular pacing for treating cardiomyopathy
A dual chamber pacemaker is provided having capability for adjusting the AV escape interval so as to optimize the timing of delivered ventricular pace pulses for therapy of patients with...
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5741308 |
Dual-chamber implantable pacemaker and method of operating same for automatically setting the pacemaker's AV interval as a function of a natural measured conduction time
A dual-chamber implantable pacemaker automatically sets its AV or PV interval to a value that is a function of the measured natural conduction time, or AR interval, of a user of the pacemaker. The...
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5741310 |
System and method for hemodynamic pacing in ventricular tachycardia
A system and method for providing a 1:2 pacing therapy in response to a sensed ventricular tachycardia, which results in an improved hemodynamic response while limiting the potential for...
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5741309 |
Break algorithm for PR+PVARP block
A method of pacing a congestive heart failure (CHF) patient's heart using a pacemaker typically capable of bradycardia dual chamber pacing. The method includes an algorithm for resetting the timing...
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5735880 |
Method and apparatus for reliably producing pacing pulse trains
A method and apparatus for reliably producing a pulse train includes a control system which automatically selects a secondary pulse generator circuit when high frequency pulses are needed or...
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5728140 |
Method for evoking capture of left ventricle using transeptal pacing lead
A method and an apparatus for pacing the left ventricle of the heart includes the installation of a pacing electrode within the interventricular septum proximate the left ventricular wall thereof...
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5725561 |
Method and apparatus for variable rate cardiac stimulation
A method and apparatus for variable rate cardiac stimulation, wherein sudden drops in the rate of delivery of stimulation pulses are avoided by means of rate smoothing and peak rate support...
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5720295 |
Pacemaker with improved detection of atrial fibrillation
In a dual chamber implantable pacemaker, the peak amplitude of the atrial intrinsic signals are monitored and used to generate a short term and a long term indicia indicative of the intrinsic...
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5720768 |
Dual chamber pacing with interchamber delay
A method and apparatus for determining the origin of a cardiac signal in the heart of a patient. A cardiac stimulator includes a multiple-chamber electrode arrangement having at least two...
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5713928 |
Process of controlling a dual chamber cardiac pacemaker
A process for controlling a dual chamber cardiac pacemaker having a fallback mode of de-synchronization of the ventricular stimulation when the atrial rhythm exceeds an allowable level, and a mode...
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5713932 |
Method and apparatus for determining atrial lead disclocation and confirming diagnosis of atrial tachyarrhythimias
In a dual chamber cardiac stimulators, e.g. cardiac pacemaker or pacemaker/cardioverter/defibrillator (PCD) system, which relies upon the detection of atrial depolarizations or the stimulation of...
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5702424 |
Method and apparatus for controlling the change of an escape interval in an active implantable medical device
An active implantable medical device, notably a cardiac pacemaker or fibrillator, which detects the instantaneous cardiac rhythm, spontaneous or stimulated, of the bearer of the device, and...
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5702425 |
Apparatus and method of noise classification in an implantable cardiac device
An implantable cardiac device includes electrodes for sensing and pacing the heart, and optionally, defibrillation electrodes. The IECG sensed in the heart is processed to derive raw sense signals...
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5700282 |
Heart rhythm stabilization using a neurocybernetic prosthesis
Heart rhythm is stabilized within the heart's free running cycle by detecting arrhythmias in a mammalian subject, and then electronically stimulating the subject's vagus and cardiac sympathetic...
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5693074 |
Cardiac electrotherapy device for cardiac contraction measurement
A cardiac electrotherapy device comprises an elongated elastic lead body having a distal electrode adapted to be connected to the heart; lead body including a sensor portion at a location adapted...
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5683425 |
Heart pacemaker with improved detection of electrical signals
A heart pacemaker with improved detection of electrical signals which are used for triggering pacemaker functions, has a detection circuit for registering intracardial heart signals in which...
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5683426 |
Apparatus and method for detecting the progression of AV nodal block and atrial capture
A pacemaker operating in an AAI or AAIR mode is provided with a detector for monitoring an atrial lead and detecting cross talk or far field R-waves from the ventricle. This signal is used to...
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5676690 |
Apparatus for administering medical therapy using detrended fluctuation analysis of physiological activity
An implantable medical apparatus includes a therapy unit which produces a medical therapy regimen which is administered by the implantable medical apparatus to a subject. The implantable medical...
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5676686 |
Pacemaker with vasovagal syncope detection
A method and apparatus for cardiac pacing, which provides for delivery of pacing pulses at an increased rate in response to a detected rapid drop in heart rate. A rapid drop may be detected in...
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5672170 |
Laser transmyocardial revascularization arrangement
The present invention involves a system for transmyocardial revascularization of a beating heart, including a laser device for ablating wall tissue of the heart being treated, with a pacemaker...
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5653735 |
Implantable cardiac stimulation device having an improved backup mode of operation and method thereof
An implantable cardiac stimulation device that has automatic functions in each of two different sets of microprocessor operating code. Following implantation, a first mode of operation executes a...
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5653737 |
Programmable pacemaker for noninvasive EP testing for atrial tachycardias with ventricular support
A programmable pacemaker that allows both noninvasive electrophysiological ("EP") testing for atrial tachycardias and ventricular pacing support, by allowing operation in the atrial channel to be...
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5651378 |
Method of using vagal nerve stimulation in surgery
The invention comprises a method for facilitating coronary surgery on the beating heart wherein the vagal nerve is electrically stimulated to temporarily stop or substantially reduce the beating of...
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5649967 |
Safety element to permanently assure the electric reliability of pulse transmitting leads utilized in cardiac pacemakers for the electric stimulation of the heart
Safety element intended to assure in time the electric reliability of pulse transmitting leads, comprised in apparatus for the electric stimulation of the heart (pacemaker) and consisting of a main...
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5643326 |
Dual chamber pacing with atrial and ventricular independence
A rate-responsive cardiac pacemaker implements a novel pacing mode, identified as ADIR/VVIR, which is especially effective for patients with Sick Sinus Syndrome and only intermittent...
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5637090 |
Multiple electrode element for mapping and ablating heart tissue
Systems and methods sense electrical events in heart tissue to identify the location of an arrhythmogenic focus for ablation. The systems and methods establish a contact site between heart tissue...
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5637417 |
Quick change battery drawer for external electrical stimulator
Disclosed is a quick change battery drawer for rapidly substituting a fresh battery for an exhausted battery in the battery drawer of an external, battery powered therapeutic electrical stimulator...
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5626621 |
Dual chamber, multi-mode external pacemaker
One embodiment of the present invention is a mode switching method and apparatus for an external, dual chamber cardiac pacemaker having multiple single chamber and dual chamber primary pacing modes...
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5620466 |
Digital AGC using separate gain control and threshold templating
A system and method automatically adjusts a sensing threshold in a cardioverter/defibrillator which receives electrical activity of the heart and delivers shock pulses in response thereto. An...
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5620471 |
System and method for discriminating between atrial and ventricular arrhythmias and for applying cardiac therapy therefor
Improved methods and apparatus are provided for applying atrial and ventricular therapies to the heart of a patient using an implanted cardiac stimulating device. Atrial and ventricular heart rates...
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5609611 |
Pacemaker system with porous electrode and residual charge or after-potential reduction
A cardiac pacemaker system is provided which includes a stimulation electrode adapted for being anchored in the heart. An output capacitor is coupled to the stimulation electrode. A first circuit...
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5609610 |
Dual chamber pacemaker with automatic adaptation for intrinsic atrial events
In an implanted pacemaker three basic pacing intervals are established: an A-V delay, a PVARP and an alert interval. These three intervals together define an atrial-to atrial interval which is...
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5607456 |
Artifical cardiac pacemaker which emits stimuli locked to the electric impulsion of the natural cardiac pacemaker
The invention concerns a cardiac pacemaker consisting of electronic circuitry including a natural beat detector unit, an artificial stimuli generating unit whose escape interval is phase-locked to...
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5607457 |
Pacemaker with evoked response detection by using differential sensing between two unipolar electrodes
A heart stimulator, operable for single-chamber and/or dual-chamber pacing, includes first and second electrical leads connected to a pulse generator and each terminating in an electrode, the...
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5591214 |
Pacemaker with automatic blanking period function
The blanking periods for an implantable cardiac device, such as a pacemaker, is determined by providing an excitation in a cardiac chamber and monitoring the corresponding cardiac activity. For...
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5584867 |
Method and apparatus for controlling a double atrial triple chamber cardiac pacemaker having a fallback mode
Control of a double atrial triple chamber cardiac pacemaker having a programmable fallback mode. The triple chamber pacemaker has a right atrial electrode and a left atrial electrode connected to...
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5575766 |
Process for the nonsurgical mapping and treatment of atrial arrhythmia using catheters guided by shaped guiding introducers
A process for the treatment of atrial arrhythmia by use of ablation and/or mapping procedures comprising ablating discrete ablation tracks within the left and right atrium of the heart by use of...
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