Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 8150512 | Use of impedance to assess electrode locations A process for determining whether the location of a stimulation electrode meets a selected heart performance criteria includes providing stimulation to the heart through the electrode and obtaining an impedance measurement during stimulation delivery using an impeda... | 04/03/2012 |
| 8064996 | Automatic determination of T-shock vulnerable window A method and apparatus for determining a T-wave shock interval sense a cardiac electrogram (EGM) signal comprising a T-wave signal. A T-wave center is determined from the EGM signal, and a T-wave shock interval is determined in response to determining the T-wave cen... | 11/22/2011 |
| 8060200 | 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 at least in part on the impedance, delivering a defibrillation shock u... | 11/15/2011 |
| 8036744 | 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 electrodes are implanted in a heart. By applying a small test energy, an ele... | 10/11/2011 |
| 7966065 | Treatment of heart failure by controlled adjustment of the atrioventricular and interventricular delays in an active implantable medical device An active implantable medical device such as a cardiac prosthesis for the treatment of a heart failure by controlled adjustment of the atrioventricular and interventricular delays. The device provides atrioventricular and/or biventricular stimulation, a sensor deliv... | 06/21/2011 |
| 7890167 | Pain free defibrillation threshold estimation A system and method for painlessly calculating an estimated defibrillation threshold, such as by using an implantable medical device and a controller. The estimated defibrillation threshold can be calculated using a delivered first energy to a first thoracic locatio... | 02/15/2011 |
| 7877139 | Method and device for implantable cardiac stimulus device lead impedance measurement Methods and devices for testing lead impedance in an implantable cardiac stimulus device. A resistor is placed in series with the lead impedance, and a predetermined or known voltage is applied to the resistor and lead impedance. The voltage across the resistor is m... | 01/25/2011 |
| 7848806 | Virtual electrode polarization for shock therapy An exemplary method includes configuring a coil electrode as a cathode, calling for delivery of energy to an electrode configuration that includes the coil cathode wherein the energy exceeds one joule, configuring a coil electrode as an anode and, within 10 seconds ... | 12/07/2010 |
| 7818058 | Automated ECG lead impedance measurement integrated into ECG gating circuitry The present invention relates to a system and method for determining the impedance of an electrode at the electrode-body interface. The electrode-body impedance of one of the electrodes may be calculated using the voltage difference between that electrode and a plur... | 10/19/2010 |
| 7787948 | Energy efficient therapeutic pulse generator system The present invention relates generally to a therapeutic pulse generator system used to provide energy efficient stimulation/pacing by causing controlled cellular depolarization based on pre-measured charge transfer. This is accomplished by periodic electrical chara... | 08/31/2010 |
| 7643877 | 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 electrodes are implanted in a heart. By applying a small test energy, an ele... | 01/05/2010 |
| 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 at least in part on the impedance, delivering a defibrillation shock u... | 07/08/2008 |
| 7349735 | Methods and apparatus for treating fibrillation and creating defibrillation waveforms Methods and apparatus for treating fibrillation utilize biphasic waveforms. A cardiac stimulator includes a defibrillation circuit that uses a pulse width modulated capacitive discharge to generate various biphasic waveforms, one or more of which may be delivered to... | 03/25/2008 |
| 7343203 | Apparatus for electrotherapy In an apparatus for electrotherapy, comprising a circuit arrangement with a terminal for generation of a sequence of voltage pulses and two electrodes for application of these voltage pulses to a part of the body that is to be treated; one of the two electrodes havi... | 03/11/2008 |
| 7340301 | Defibrillator system The invention provides a portable defibrillation system (2), including: a high voltage switch, and current control circuit (16) connectable to and fed by a power source (6); a high voltage transformer (14) fed by the current control circu... | 03/04/2008 |
| 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 detect a waveform of the electric pulse and to analyze a parameter of ... | 02/05/2008 |
| 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 fibrillation of a heart, such as ventricular fibrillation. A fibrilla... | 01/15/2008 |
| 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 in impedance associated with the electrode-tissue interface can indica... | 01/08/2008 |
| 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 parameters may indicate a possible change in the capture threshold, and a s... | 01/08/2008 |
| 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 asymptomatic woman being classified as belonging to a first group having a first... | 11/27/2007 |
| 7289854 | Unitary subcutaneous only implantable cardioverter-defibrillator and optional pacer A unitary subcutaneous implantable cardioverter-defibrillator has a long thin housing in the shape of a patient's rib. The housing contains a source of electrical energy, a capacitor, and operational circuitry that senses the presence of potentially fatal heart rhyt... | 10/30/2007 |
| 7283863 | Method and apparatus for identifying cardiac and non-cardiac oversensing using intracardiac electrograms A method and apparatus for automatically identifying various types of cardiac and non-cardiac oversensing is provided. EGM data, including time intervals between sensed and paced events and signal morphologies, are analyzed for patterns indicative of various types o... | 10/16/2007 |
| 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 Protocol if the AV interval exceeds a threshold when the cardiac rat... | 10/16/2007 |
| 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. The method comprises the steps of: (1) providing a plurality of electro... | 10/02/2007 |
| 7272443 | System and method for predicting a heart condition based on impedance values using an implantable medical device Techniques are provided for predicting the onset of a heart condition within a patient based on impedance measurements. Briefly, overloads in fluid levels in the thorax and in ventricular myocardial mass within the patient are detected based on impedance signals sen... | 09/18/2007 |
| 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 change in a T-wave of an electrogram with respect to time such as the ... | 08/14/2007 |
| 7252090 | Selection of neurostimulator parameter configurations using neural network In general, the invention is directed to a technique for selection of parameter configurations for a neurostimulator using neural networks. The technique may be employed by a programming device to allow a clinician to select parameter configurations, and then progra... | 08/07/2007 |
| 7240833 | System and method of managing information for an implantable medical device A method of collecting information related to manufacture of an implantable medical device, storing the information in a radio frequency identifier (RFID) unit, updating the information stored in the RFID unit during manufacturing of the implantable medical device, ... | 07/10/2007 |
| 7239914 | Rate smoothing control A rate smoothing function used in implantable pulse generators uses detected triggering events, which cause the rate smoothing function to be activated or deactivated, and detected parameter adjusting events, which cause parameter(s) of the rate smoothing function t... | 07/03/2007 |
| 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 rechargeable battery to prolong the original battery charge. A charge receivi... | 06/26/2007 |
| 7224576 | High capacitance electrode and methods of producing same The present invention provides improved cathodes and methods for producing such cathodes for ultimate use in conjunction with valve metal capacitors. A family of titanium carbide cathodes according to the present invention can be produced so that they inhabit a pre-... | 05/29/2007 |
| 7212852 | Bioimpedance measurement using controller-switched current injection and multiplexer selected electrode connection A system and method for measuring a voltage in a body part are described. The system includes a multiplexing unit, and N body leads for electrically connecting the multiplexing unit to the body part. The system also includes a controller switching unit for allowing ... | 05/01/2007 |
| 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 estimate of the ideal charge time is extrapolated from a first measured ch... | 05/01/2007 |
| 7209785 | Apparatus and method for R-wave detection with dual dynamic sensitivities An apparatus and method for delivering electrical shock therapy in order to treat atrial tachyarrhythmias such as fibrillation utilizes a dynamically varying threshold to detect R-waves and synchronously deliver a defibrillation shock. ... | 04/24/2007 |
| 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 pulse is monitored and adjusted. A charging circuit is used to charge the... | 04/10/2007 |
| 7200441 | Implantable cardiac stimulator with electrode-tissue interface characterization A cardiac stimulator for measuring pacing impedance includes a tank capacitor for delivering charge to the heart via leads, a shunt resistor, and high-impedance buffers for measuring pacing current through the shunt resistor. During the stimulation pulse, the voltag... | 04/03/2007 |
| 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 implantable-cardioverter defibrillator (ICD). The invention employs high speed, swit... | 04/03/2007 |
| 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 connector. The assembly further includes an implantable defibrillation device... | 03/20/2007 |
| 7194308 | System and method for monitoring or reporting battery status of implantable medical device A system and method monitors or reports the battery status of an implantable medical device to a user. The battery terminal voltage and charge delivered are measured. Before the battery terminal voltage falls below an Elective Replacement Indicator (ERI) threshold v... | 03/20/2007 |
| 7194302 | Subcutaneous cardiac stimulator with small contact surface electrodes A subcutaneous cardiac device includes two electrodes and a stimulator that generates a pulse to the electrodes. The electrodes are implanted between the skin and the rib cage of the patient and are adapted to generate an electric field corresponding to the pulse, t... | 03/20/2007 |
