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7526345 |
Assessing medical electrode condition
The invention presents an apparatus and techniques for determining whether a medical electrode, such as a defibrillation electrode coupled to an automated external defibrillator, is in a condition...
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7480532 |
Baroreflex activation for pain control, sedation and sleep
Systems and methods provide baroreflex activation to treat or reduce pain and/or to cause or enhance sedation or sleep. Methods involve activating the baroreflex system to provide pain reduction,...
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7463931 |
Electrical stimulation of tissue for therapeutic and diagnostic purposes
Electrobiological stimulation is carried out transcranially by applying high frequency squarewave bursts exhibiting no d.c. term across the cranial region. Such stimulation is commenced employing...
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7398122 |
Self adjusting optimal waveforms
An exemplary method includes detecting fibrillation, measuring impedance of a defibrillation circuit that includes myocardial tissue, determining one or more defibrillation shock parameters based...
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7317948 |
Neural stimulation system providing auto adjustment of stimulus output as a function of sensed impedance
A neural stimulation system automatically corrects or adjusts the stimulus magnitude (stimulation energy) in order to maintain a comfortable and effective stimulation therapy. Because the changes...
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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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7302292 |
Breast cancer screening
A method of screening for breast cancer, comprising: testing a plurality of asymptomatic women by measuring at least one electrical impedance characteristic on at least one breast, said...
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7283872 |
Implantable medical device with ventricular pacing protocol
An implantable medical device operates to promote intrinsic ventricular depolarization according to a pacing protocol. The medical device monitors the AV interval and adjusts the Ventricular Pacing...
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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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7257441 |
Defibrillation shock strength determination technology
A method for determining a cardiac shock strength, for example the programmed first-therapeutic shock strength of an implantable cardioverter defibrillator (ICD), including the steps of sensing a...
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7236823 |
Portable defibrillators
A portable defibrillator includes a self-test circuit in which electrical energy is discharged from one or a bank of capacitors to a charge receiving circuit which recycles the energy to a...
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7212856 |
Reformation techniques for capacitors of implantable medical devices
The invention is directed to techniques for estimating a deformation factor of one or more capacitors in an implantable medical devices (IMD), and techniques for reforming such capacitors. An...
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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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7181272 |
Cardiac restraint with electrode attachment sites
The invention is directed to techniques for electrode placement around a heart. A harness having one or more attachment sites may be secured around the heart, and electrodes may be secured at the...
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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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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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7120493 |
Shock lead impedance measurement to ensure safe delivery of shock therapy to maintain circuit integrity
An apparatus and method of automatically measuring the lead impedance of a high energy shock lead before delivery of high energy therapy used to treat heart arrhythmia. In one example, an impedance...
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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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7065403 |
System and method for measuring lead impedance in an implantable stimulation device employing pulse-train waveforms
A leakage detection system for use in an implantable cardiac stimulation device, such as a cardioverter defibrillator. The leakage detection system includes a switch bank and a controller that...
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7050851 |
Implantable cardioverter/defibrillator with housing electrode and lead detection and switching circuitry
An implantable cardioverter/defibrillator includes an active can electrode and a high-voltage lead that can be electrically isolated from one another by opening a switch between them. The...
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7047072 |
Selecting Electrotherapy dosage
A dosage for electrotherapy delivered to a patient, such as a defibrillation pulse delivered by an external defibrillator, is selected based on an age-related classification, such as adult or...
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6990373 |
Automated external defibrillator with user interface for adult and pediatric applications
An automated external defibrillator automatically determines the type of patient to which it is attached based on patient-specific information entered by the user. The defibrillator includes...
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6965796 |
Method and apparatus for self-test of defibrillation and pacing circuits including a patient isolation switch
A method and apparatus for performing self-tests on defibrillation and pacing circuits including a patient isolation switch is disclosed. Following a test of the defibrillation and pacing...
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6907290 |
Measurement of the complex impedance of an implantable lead
A process for the measurement of the complex impedance of a lead for an active implantable medical device, in particular a pacemaker, defibrillator and or cardiovertor. This process includes the...
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6859664 |
Cardiac rhythm management system with defibrillation threshold prediction
A cardiac rhythm management device predicts defibrillation thresholds without any need to apply defibrillation shocks or subjecting the patient to fibrillation. Intravascular 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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6725091 |
Measuring a trans-septum bio-impedance in an active implantable medical device, in a particular pacemaker, defibrillator and/or cadiovertor and/or multisite device
An active implantable medical device, in particular a pacemaker, cardioverter, defibrillator and/or a multisite device having circuits for measuring a trans-septal bio-impedance. This device is...
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6658291 |
Electrode system for improved detection of pad contact and artifact detection or removal
This invention relates generally to medical electrode systems. In particular, the electrodes of this invention are capable of delivering synchronized cardioversion energy pulses as well as...
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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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6647290 |
Charge-based defibrillation method and apparatus
A defibrillation method and apparatus are described for delivering a desired quantity of electric charge to a patient. The method and apparatus are applicable both to external defibrillation and to...
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6629931 |
Method and system for measuring a source impedance of at least one cardiac electrical signal in a mammalian heart
A method of measuring a source impedance of at least one cardiac electrical signal in a mammalian heart is provided. A first amplifier system is operated. A first signal from a chamber of the heart...
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6628986 |
System for predicting defibrillation threshold based on patient data
The implant guiding programmer is configured to automatically determine a defibrillation threshold (DFT) for a particular patient and to further determine an optimal implantation configuration for...
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6625487 |
Bioelectrical impedance ECG measurement and defibrillator implementing same
A multivariate impedance (Z) measurement module, for use in an electrotherapy device, that accurately measures patient impedance. The Z measurement module implements a resistive network model of...
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6620186 |
Method and system for medical lead impedance test
An apparatus for testing the impedance of a medical lead connecting an implantable stimulation device to a nerve or a muscle. The implantable device is of the type comprising a capacitor for...
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6597950 |
Cardiac rhythm management system with painless defibrillation lead impedance measurement
A cardiac rhythm management system includes a defibrillation lead impedance measurement system by which defibrillation lead impedance is measured using a test current source different from the...
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6597949 |
Mechanically powered external defibrillator
A defibrillator which contains a device for producing alternating voltage, a power factor controller for converting the alternating voltage to a direct voltage, and a device for converting the...
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6546287 |
Controlled-power defibrillator and method of defibrillation
A controlled-power defibrillator and method of defibrillation for automatically compensating for changes in patient resistance during delivery of a defibrillation pulse. A switching power converter...
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6522914 |
Method and apparatuses for monitoring hemodynamic activities using an intracardiac impedance-derived parameter
An intracardiac impedance-derived parameter, Half Cycle Activity (HCA) is used in sensing and controlling cardiac activities in implantable cardiac devices such as bradycardia pacemakers and...
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6400984 |
Method and apparatus for detecting whether a load is a patient or a test device
A method and apparatus that automatically detects whether a load connected to a defibrillator is a patient or a test device measures a load-dependent electrical parameter, such as impedance, by...
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6345200 |
Implant guiding programmer for implantable cardioverter defibrillator
The implant guiding programmer is configured to automatically determine the defibrillation threshold (DFT) for a particular patient and to further determine an optimal implantation configuration...
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6304781 |
Electrostimulator
Electrostimulator (2), comprising an interface for connecting a working electrode (2), as well as a pulse generator that is connected on the output side to the interface for transmitting electrical...
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6253103 |
Method and apparatus for high current electrode, transthoracic and transmyocardial impedance estimation
Impedance across a load, such as a pair of face-to-face electrodes and/or a patient's transthoracic and transmyocardial impedance, respectively, is modeled as a resistor in series with a capacitor,...
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6241751 |
Defibrillator with impedance-compensated energy delivery
A defibrillator having an energy storage capacitor network with multiple configurations selected according to patient impedance and desired energy level for delivery of an impedance-compensated...
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6208898 |
Impedance estimation with dynamic waveform control in an electrotherapy apparatus
An electrotherapy apparatus performs a low level impedance measurement upon the patient to determine the initial charge level on the capacitor used to deliver an electrotherapy waveform to the...
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6104954 |
High frequency lead testing apparatus in an implantable defibrillator
An implantable cardioversion defibrillator device is provided with a measuring device for measuring a parameter associated with the defibrillator electrodes such as their impedance and the like....
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6101413 |
Circuit detectable pediatric defibrillation electrodes
Defibrillator electrodes having an identification element and a circuit which indicates to an AED the weight range of the patient being rescued. When the AED detects the presence of pediatric...
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6096063 |
Electrotherapy circuit having controlled current discharge based on patient-dependent electrical parameter
An electrotherapy circuit administers to a patient a current waveform. The electrotherapy circuit includes a charge storage device, at least two discharge electrodes connected by electrical...
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6047212 |
External defibrillator capable of delivering patient impedance compensated biphasic waveforms
This invention provides an external defibrillator and defibrillation method that automatically compensates for patient-to-patient impedance differences in the delivery of electrotherapeutic pulses...
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6016445 |
Method and apparatus for electrode and transthoracic impedance estimation
Impedance across a load, such as a pair of face-to-face electrodes, or across electrodes in contact with a patient's chest cavity, respectively, is modeled as a resistor in series with a capacitor,...
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5999852 |
Defibrillator method and apparatus
A defibrillator method and apparatus wherein a patient's measured transthoracic impedance (TTI) is used to control the amount of energy contained in a defibrillation pulse applied to the patient....
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