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7596411 |
Apparatus and method for two-component bioelectrical impedance ratio measuring and monitoring
An implantable cardiac stimulation and rhythm management device includes an impedance measuring circuit which determines a patient's intra-thoracic impedance and the resistance and reactance...
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7551960 |
External presentation of electrical stimulation parameters
An external indicator device presents parameters associated with stimulation therapy generated by a pulse generator, which may be associated with an external or implantable stimulation device. In...
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7546159 |
Subcutaneous cardiac stimulation device, system, and method providing accelerated arrhythmia detection verification and transient rate compensation
A subcutaneous cardiac stimulation system verifies accelerated arrhythmia detection before delivering accelerated arrhythmia therapy to the heart. The stimulation system includes a verification...
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7450995 |
Implantable cardiac stimulation device including an output circuit that provides arbitrarily shaped defibrillation waveforms
An output circuit for use in an implantable cardiac defibrillation provides an output pulse having a waveform of virtually any desired shape. The device includes a sensing circuit that senses...
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7408762 |
Method and apparatus for providing capacitor feedthrough
A capacitor feedthrough assembly with a cavity including a capacitor stack, including one or more substantially flat anode layers and one or more substantially flat cathode layers in a case with a...
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7369889 |
Apparatus for analyzing cardiac events
An apparatus for detecting cardiac events in electrograms has a feature extraction unit that derives features of the cardiac events for discriminating among different types of cardiac events. A...
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7366567 |
Method for treating myocardial infarction
A method for treating patients after a myocardial infarction which includes pacing therapy is disclosed. A cardiac rhythm management device is configured to deliver pre-excitation pacing to one or...
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7352560 |
Method and apparatus for interconnecting electrodes with partial titanium coating
The present subject matter includes a capacitor stack having a plurality of anode layers, and a plurality of cathodic metal substrates partially coated in a titanium coating. Cathode portions...
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7336994 |
Control of atrial defibrillation therapy based on hemodynamic sensor feedback
Control of defibrillation therapy delivered by implantable medical devices (IMDs) using hemodynamic sensor feedback is disclosed. The hemodynamic sensor feedback allows for increased control over...
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7328065 |
Electric stimulator and defibrillator
A plurality of electrodes are adapted to be attached on a living body. An electric pulse is output through the electrodes as an electric stimulation to the living body. An analyzer is operable to...
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7319898 |
Self-adapting defibrillator induction feature
A system that includes a programming device and a defibrillator provides a self-adapting defibrillator induction feature to test the effectiveness of the defibrillator in detecting and terminating...
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7317943 |
Capture threshold monitoring
In general, the invention is directed to techniques for capture testing of a capture threshold in cooperation with measurement of other cardiac parameters. Physiological or non-physiological...
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7283865 |
Device and method for determining a cardiac condition using a complex signal formed from a detected cardiac signal
In a device and a method for determining a cardiac condition from a detected cardiac signal, an input signal is formed from the detected cardiac signal and supplied to an analysis unit. The...
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7277752 |
System for cardiac resuscitation
A system and method for monitoring and controlling the therapy of a cardiac rhythm abnormality victim at a remote site by proving immediate access to a medical professional at a central station....
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7277750 |
Method and apparatus for anti-tachycardia pacing and defibrillation
An implantable cardioverter/defibrillator (ICD) includes an Anti-Tachycardia Pacing Before Charge (ATP-BC) mode according to which one or more high-voltage capacitors for storing defibrillation...
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7254446 |
System and method for stimulus calibration for an implantable pulse generator
A system, method, and computer program product for calibrating a stimulation device such as an implantable pulse generator (IPG). An IPG, whether it is a self-contained implantable pulse generator...
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7242979 |
External defibrillator and methods for operating the external defibrillator
Methods and apparatus are provided for minimizing the inherent time delays within external defibrillators. The methods and apparatuses utilize timing schemes for initiation and completion of...
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7203539 |
Apparatus and method for energy management in atrial defibrillator
An apparatus and method for delivering electrical shock therapy in order to treat atrial tachyarrhythmias such as fibrillation in which the energy stored in a capacitor used to deliver a shock...
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7200434 |
Control of arbitrary waveforms for constant delivered energy
The present invention outlines structures and methods for delivering a controllable amount of energy to a patient by automatically compensating for the load impedance detected by an...
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7197360 |
Methods and systems for using an inductor to increase capacitor reformation efficiency in an implantable cardiac device (ICD)
Methods and systems for increasing capacitor reformation efficiency in an implantable cardiac device (ICD) are presented. In one embodiment, a method and system provide for: (1) fully charging a...
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7194304 |
Implantable cardiac defibrillation assembly including a self-evaluation system and method
An implantable cardiac defibrillation assembly includes at least one implantable lead having a defibrillation electrode adapted for placement in a chamber of the heart. The lead includes a...
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7184831 |
Method and apparatus to control delivery of high-voltage and anti-tachy pacing therapy in an implantable medical device
A method and device for delivering a therapy in response to detection of abnormal cardiac rhythms that includes delivering a first therapy during a first delivery period, substantially simultaneous...
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7181276 |
Device and method for preventing the acceleration of cardiac arrhythmias
An exemplary method includes detecting ventricular fibrillation, delivering a low voltage cardiac stimulus, determining whether the low voltage cardiac stimulus terminated the ventricular...
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7181275 |
Method and apparatus for actively determining a coupling interval corresponding to a cardiac vulnerable zone
A method and apparatus for actively determining a coupling interval corresponding to a cardiac vulnerable zone associated with a therapy of an implantable medical device that includes a timing and...
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7181273 |
Tachycardia synchronization delays
An implantable medical device (IMD) provides for adaptive timing of the delivery of cardioversion shocks. In particular, the invention IMD provides for an adaptive cardioversion synchronization...
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7174208 |
Slow rise defibrillation waveforms to minimize stored energy for a pulse modulated circuit and maximize charge transfer to myocardial membrane
The present invention provides structures and methods for delivering a complex slow-rise defibrillation waveform wherein in lieu of the simple truncation of prior art defibrillation waveforms, when...
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7171269 |
Method of analysis of medical signals
A method of analysis of medical signals which uses wavelet transform analysis to decompose cardiac signals. Apparatus for carrying out the method, and cardiac apparatus adapted to employ the method...
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7158826 |
System and method for generating pain inhibition pulses using an implantable cardiac stimulation device
Improved pre-pulse pain inhibition (PPI) techniques are provided for reducing pain caused by cardioversion shocks, including a technique for determining preferred pulse durations for high voltage...
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7142927 |
Method and system for the selection of cardiac defibrillation shocks based on discomfort
Methods, systems and computer program products for selecting a shock profile for a defibrillator based on patient discomfort to a plurality of different defibrillating shocks include delivering a...
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7142911 |
Method and apparatus for monitoring drug effects on cardiac electrical signals using an implantable cardiac stimulation device
An implantable cardiac stimulation device, such as a pacemaker or Implantable Cardioverter Defibrillator, is configured to automatically monitor the effects of antiarrhythmic drugs on cardiac...
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7107099 |
Capacitor having a feedthrough assembly with a coupling member
A flat capacitor includes a case having a feedthrough hole, a capacitor stack located within the case, a coupling member having a base surface directly attached to the capacitor stack and having a...
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7096063 |
Method and apparatus for delivering multi-directional defibrillation waveforms
A method and device for delivering a pulse waveform to a target site of a patient that includes an energy storage device storing electrical energy, and a plurality of electrodes electrically...
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7079894 |
Damped biphasic energy delivery circuit for a defibrillator
A defibrillator capable of delivering a damped biphasic truncated (DBT) defibrillation pulse is provided. An energy storage circuit is coupled across a high voltage switch such as an H-bridge for...
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7076295 |
Automatic defibrillation shock energy adjuster
An implementation of a technology is described herein for automatically adjusting the magnitude of a defibrillation shock of an implantable cardiac therapy devices (ICTDs) to an improved magnitude....
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7016726 |
Smart medical connector system and method of use
A method and apparatus for identifying electrodes attached to a defibrillator and adjusting patient therapy delivered by a defibrillator in response thereto.
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6997924 |
Laser pulmonary vein isolation
A catheter introduction apparatus provides an optical assembly for emission of laser light energy. In one application, the catheter and the optical assembly are introduced percutaneously, and...
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6952607 |
Method and apparatus for delivering defibrillation and pacing energy from a single power source
A defibrillator circuit that delivers high voltage electrical defibrillation pulses and lower energy pacing pulses to a patient. The circuit includes a current regulator which is operative to...
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6934582 |
Apparatus for treating fibrillation of at least one chamber of a heart
Apparatus for treating fibrillation of at least one chamber of a heart comprising a fibrillation detector for detecting a fibrillation, a defibrillator for defibrillating the chamber of the heart,...
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6931279 |
Method and apparatus for implementing task-oriented induction capabilities in an implantable cardioverter defibrillator and programmer
The invention provides systems to prevent the delivery of anti-tachycardia pacing (ATP) following a defibrillation threshold (DFT) induction at implant. An algorithm that classifies episodes as...
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6904314 |
Automatic defibrillation threshold tracking
An implantable cardiac stimulating device employs an automatic defibrillation threshold tracking process that uses a measured pacing stimulation threshold to estimate the patient's defibrillation...
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6856840 |
Ionically conductive polymeric composition
An ionically conductive polymeric composition is disclosed. The composition is especially useful for coating an implantable hot can defibrillator electrode. The polymeric composition, for example,...
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6824538 |
System for preventing sudden cardiac death by nerve sprouting from right stellate ganglion
A system or apparatus is described for reducing the likelihood of the occurrence of ventricular arrhythmia in the heart of a patient having a myocardial infarction and an atrioventricular block,...
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6813517 |
Configuring defibrillator energy dosing
A defibrillator can be programmed with multiple energy protocols to be followed when the defibrillator administers therapy to a patient. Each energy protocol defines a sequence of energy dosages or...
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6799070 |
Voltage control circuitry for charging ouput capacitor
Battery driven voltage control circuitry charges an output capacitor, which periodically supplies a current pulse. The circuitry converts battery voltage VBAT to a charging voltage VUPC based upon...
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6772007 |
System and method of generating a low-pain multi-step defibrillation waveform for use in an implantable cardioverter/defibrillator (ICD)
A shocking circuit is provided for use in an ICD for generating rounded multi-step defibrillation shocking pulse waveforms having reduced voltage peaks to minimize pain within a patient receiving...
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6772006 |
Method and device for controlling peak currents in a medical device
In one embodiment, a method is characterized by measuring a patient parameter associated with a human body; in response to the patient parameter, retrieving a maximum expected device parameter; and...
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6736770 |
Implantable medical device comprising an hermetically sealed housing
The invention relates to an implantable medical device having an hermetically tight housing, which houses an electronic unit as well as an electrochemical energy storage for supplying the medical...
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6654637 |
Method and system for ventricular fusion prevention
A method and system for ventricular fusion prevention is provided. It is determined whether an atrial sense occurred within a prior wait time and a scheduled ventricular pace is administered if no...
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6650936 |
Method and apparatus for delivering electrotherapy having an equivalent probability of success for different patients
A medical device constructed according to the invention includes electrodes ( 12 a , 12 b ), a measuring unit ( 24 ) for measuring a patient-dependent electrical parameter (e.g., impedance) of the...
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6643545 |
Method and apparatus for delivering an optimum shock duration in treating cardiac arrhythmias
The present invention provides apparatus and methods for delivering an optimum electrical shock in treating cardiac arrhythmias. The apparatus comprises means for producing an electrical waveform...
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