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6937894 |
Method of recharging battery for an implantable medical device
A method of operating an implantable medical device containing a Lithium Silver Vanadium Oxide battery. In response to a detected need for therapy, a current flow is delivered from the battery to a...
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6937902 |
Pacemaker with determination of the dependency of cardiac output on the AV-delay
A cardiac pacemaker has a pulse generator for delivering stimulation pulses to a patient's heart and a control unit for controlling the delivery of the stimulation pulses from the pulse generator....
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6937896 |
Sympathetic nerve stimulator and/or pacemaker
An exemplary method for increasing cardiac output that includes detecting a need for increased cardiac output and delivering electrical signals to a first electrode proximate to a left sympathetic...
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6937897 |
Electrode for His bundle stimulation
An electrical lead equipped with cathode and anode active succession electrodes for positioning in the vicinity of the His bundle tissue. The lead includes a lead body for carrying conductors...
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6934583 |
Implantable lead and method for stimulating the vagus nerve
Methods and apparatus for stimulating the right vagal nerve within a living body via positioning an electrode portion of a lead proximate to the portion of the vagus nerve where the right cardiac...
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6934584 |
Enhanced power efficiency in implantable cardiac stimulation devices
Pacing pulse power efficiency is increased in an implantable cardiac stimulation device. The invention includes a cardiac function sensor for sensing cardiac functions. A controller is coupled to...
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6934585 |
System and method for far-field R-wave detection
A system and corresponding method are disclosed for discriminating between far field R-waves and actual atrial events that are sensed on an atrial sense channel. In one embodiment, such information...
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6931281 |
Method and apparatus for monitoring myocardial conduction velocity for diagnostics of therapy optimization
A cardiac stimulation device and method to measure a myocardial conduction time and to store its long-term running average. A multipolar lead is used to deliver a stimulation pulse from a tip...
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6931282 |
Method to create pacemaker timing cycles
A cardiac rhythm management system having a plurality of timers and programming adapted to receive a status array. The status array is based on the status of each timer of the plurality of timers...
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6931280 |
Apparatus and method for bi-ventricular pacing and sensing in an implantable device
An apparatus and method for pacing and sensing the right side as well as the left side of the heart (bi-ventricular pacing and sensing). The bi-ventricular pacing and sensing is accomplished by...
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6928323 |
Adaptive sensing threshold for cross-chamber refractory period
A cross-chamber refractory period with an adaptively adjusted sensing threshold for use by a cardiac pacemaker is disclosed. In response to a cross-chamber event, the sensing threshold of a sensing...
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6925329 |
Automatic setting of cardiac operating parameters based upon capture threshold level
An apparatus and method for operating an implantable stimulation device are disclosed. The implantable stimulation device is configured to dynamically modify pacing pulse energies based upon a...
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6923772 |
Apparatus and method for determining responders to cardiac resynchronization therapy using implantable accelerometers
A device for measuring a synchronicity of contraction of a heart to determine if an individual would be a responder to cardiac resynchronization therapy. The device may include a first electrode...
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6925328 |
MRI-compatible implantable device
A cardiac assist device containing a device for connecting the cardiac assist device to a heart, for furnishing electrical impulses from the cardiac assist device to the heart, for ceasing the...
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6922588 |
Electrode line
The invention concerns an electrode line ( 12 ) for an implantable intravascular electrostimulation device ( 10 ), wherein the electrode line ( 12 ) is electrically conductively connected with its...
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6922587 |
System and method for tracking progression of left ventricular dysfunction using implantable cardiac stimulation device
The progression or regression of left ventricular dysfunction (LVD) is automatically evaluated by a pacemaker or other implantable cardiac stimulation device by tracking changes in the resting...
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6920355 |
Multi-site hybrid hardware-based cardiac pacemaker
A hybrid cardiac pacemaker in which the operation of the device is controlled by hardware-based controller as supervised by a microprocessor-based controller. The hardware-based controller...
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6917830 |
Method and system for noise measurement in an implantable cardiac device
An implantable cardiac rhythm management device is configured to estimating the noise level and noise floor in a sensing channel by measuring the magnitude of signal in the sensing channel when...
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6915160 |
Dynamically optimized multisite cardiac resynchronization device
A cardiac rhythm management device in which amplitudes of electrograms from one or more cardiac sites are measured in order to ascertain the extent of hypertrophy. The device may then pace the...
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6912418 |
System and method for distinguishing eletrical events originating in the atria from far-field electrical events originating in the ventricles as detected by an implantable medical device
The system and method discriminates P-waves or other electrical events originating in the atria from R-waves or other electrical events originating in the ventricles. In one example, far-field...
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6909916 |
Cardiac rhythm management system with arrhythmia classification and electrode selection
A system, method, or device classifies an arrhythmia according to the temporal order in which a depolarization wave associated with a particular heart contraction is received at a plurality of...
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6907289 |
Triggered storage of diagnostic data associated with compromised resynchronization therapy
A method for operating a cardiac rhythm management device used for cardiac resynchronization therapy in which the storage of diagnostic data is triggered by detection of a condition indicating that...
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6904311 |
Method of determining and documenting cessation of life using evoked response
The date and time of death of a patient may be recorded in a memory of a microprocessor used in an implantable cardiac rhythm management device by detecting the failure of the heart to produce an...
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6904316 |
Cardiac rhythm management system with maximum tracking rate (MTR) hysteresis
A cardiac rhythm management system provides both a safe maximum pacing rate limit and a physiological maximum pacing rate limit. The present subject matter provides a solution to problems...
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6904318 |
Method and system for monitoring and controlling systemic and pulmonary circulation during a medical procedure
A method of performing a medical procedure, such as surgery, is provided. The system comprises a sensor to sense a biological characteristic, such as a chemical, physical or physiological...
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6902522 |
Cardiac disease treatment and device
A device for treating cardiac disease of a heart having an upper portion and a lower portion divided by an A–V groove, the device including a jacket adapted to be secured to the heart, and a...
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6904315 |
Atrial aware VVI: a method for atrial synchronous ventricular (VDD/R) pacing using the subcutaneous electrode array and a standard pacing lead
An algorithm is implemented in a circuit for sensing P-waves in a pacemaker to ensure ventricular pacing synchronization with sensed atrial depolarization waves. VDD and VDDR pacing (atrial...
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6904317 |
Method and apparatus for dynamically adjusting overdrive pacing parameters
Dynamic overdrive pacing adjustment techniques are described for use in implantable cardiac stimulation devices. In a first technique, an overdrive pacing unit of a microcontroller of the...
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6901292 |
Control of externally induced current in an implantable pulse generator
The present invention takes the form of a current limiting apparatus and method for limiting current flow, induced when the level of an external signal is greater than an external signal threshold...
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6901290 |
Electromagnetic interference immune tissue invasive system
An electromagnetic immune tissue invasive system includes a primary device housing. The primary device housing having a control circuit therein. A shielding is formed around the primary device...
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6901288 |
Sealing assembly for intravenous lead
A seal adapted for use with medical devices is provided with a lead having a distal tip electrode. The distal tip of the lead is adapted for implantation on or about the heart and for connection to...
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6901289 |
System for providing electrical stimulation to a left chamber of a heart
A medical electrical lead is disclosed that is adapted for placement in the coronary sinus, or a branch vein thereof. The lead includes a first and second pace/sense electrode. A selection...
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6898462 |
Defibrillator/monitor with patient specific treatment algorithms
An interactive apparatus which includes (a) a processing unit automatically implementing a cardiac treatment algorithm, by using detected signals from a patient and the cardiac treatment algorithm,...
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6895273 |
Temporary tachyarrhythmia therapy modes for electrophysiologic testing
Systems and methods implemented with an implantable medical device (IMD) are provided for performing cardiac testing while temporarily disabling all or selected antitachyarrhythmia therapy delivery...
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6889078 |
Hysteresis activation of accelerated pacing
An improved pacemaker has a hysteresis feature that activates accelerated pacing during periods of sinus arrest and/or extreme bradycardia. When the patient's intrinsic heart rate drops below a...
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6885888 |
Electrical stimulation of the sympathetic nerve chain
The present invention provides a method of affecting physiological disorders by stimulating a specific location along the sympathetic nerve chain. Preferably, the present invention provides a...
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6882882 |
Atrioventricular delay adjustment
In a system that includes a ventricular pacemaker, the system adjusts an atrioventricular delay to synchronize the onset of isovolumetric contraction with the completion of ventricular filling. The...
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RE38712 |
Method and apparatus for storing signals in an implantable medical device
A method of storing signals having a course over time in an implantable medical device, and/or transmitting the signals out of the device and out of the patient's body, with the course over time...
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6868287 |
Cardiac remodeling
The invention provides a method of treating a heart to remodel gap junctions, obtain gap junctional remodeling and/or alteration or effective refractory period comprising contacting linked multiple...
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6862475 |
Pediatric rate varying implantable cardiac device
A device for monitoring cardiac activity in pediatric patients and providing therapeutic stimuli to the pediatric patient such that the basic pacing rate of therapy provided varies so as to closely...
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6862474 |
Implantable heart stimulator
An implantable heart stimulator has an AV-interval generator which generates a variable AV-interval and which is provided with a predetermined basic AV-interval. The heart stimulator has a counter...
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6862471 |
Method and apparatus for blanking T-waves from combipolar atrial cardiac signals based on expected T-wave locations
The stimulation device blanks T-waves from the atrial channel of an electrical cardiac signal by employing a T-wave blanking interval localized to the expected location and duration of the T-wave....
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RE38705 |
Method and device for electronically controlling the beating of a heart using venous electrical stimulation of nerve fibers
An electro-stimulation device includes a pair of electrodes for connection to at least one location in the body that affects or regulates the heartbeat. The electro-stimulation device both...
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6859665 |
Cardiac pacing using adjustable atrio-ventricular delays
A pacing system for providing optimal hemodynamic cardiac function for parameters such as contractility (peak left ventricle pressure change during systole or LV+dp/dt), or stroke volume (aortic...
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6856835 |
Biphasic waveform for anti-tachycardia pacing for a subcutaneous implantable cardioverter-defibrillator
A power supply for an implantable cardioverter-defibrillator for subcutaneous positioning between the third rib and the twelfth rib and using a lead system that does not directly contact a...
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6853538 |
Capacitors with recessed rivets allow smaller implantable defibrillators
Implantable defibrillators are implanted into the chests of patients prone to suffering ventricular fibrillation, a potentially fatal heart condition. Critical components in these devices are...
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6842642 |
Adjustable cardiac resynchronization
Techniques are presented for providing adjustable cardiac resynchronization with an implanted medical device such as a pacemaker. For example, cardiac resynchronization may be provided during some...
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RE38680 |
Arrangement for determining a heart rate by automatically establishing the optimal refractory time for heart rate determination
An arrangement for determining the heart rate (f RR ) or the refractory time of the cardiac tissue, particularly for detecting tachycardia or fibrillation, has an electrode (E) for sensing heart...
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6839592 |
Cardiac resynchronization with adaptive A1-A2 and/or V1-V2 intervals
In a system that provides bi-atrial and/or bi-ventricular pacing, the system adjusts an interval between paces delivered to the atria, and/or an interval between paces delivered to the ventricles,...
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6832112 |
Method of adjusting an AV and/or PV delay to improve hemodynamics and corresponding implantable stimulation device
Methods and apparatus are provided for adjusting the AV/PV delay of an implantable stimulation device so as to achieve fusion of an externally provided ventricular stimulus with the patient's own...
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