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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 8041426 | Selective resynchronization therapy optimization based on user preference A method and system for calculating an atrio-ventricular delay interval based upon an inter-atrial delay exhibited by a patient's heart. The aforementioned atrio-ventricular delay interval may optimize the stroke volume exhibited by a patient's heart. The aforementi... | 10/18/2011 |
| 7706881 | Implantable medical device with cardiac output- based apnea suppression Techniques are provided for improving cardiac output and also suppressing certain forms of apnea/hypopnea within a patient using an implantable medical device, such as a pacemaker or ICD. In one example, a selected pacing parameter—usually the pacing rate—is tem... | 04/27/2010 |
| 7613514 | Selective resynchronization therapy optimization based on user preference A method and system for calculating an atrio-ventricular delay interval based upon an inter-atrial delay exhibited by a patient's heart. The aforementioned atrio-ventricular delay interval may optimize the stroke volume exhibited by a patient's heart. The aforementi... | 11/03/2009 |
| 7392084 | Demand-based cardiac function therapy A method and device for delivering cardiac function therapy on a demand basis. An implantable device for delivering cardiac function therapy is programmed to suspend such therapy at periodic intervals or upon command from an external programmer. Measurements related... | 06/24/2008 |
| 7369892 | Ischemic heart disease detection An implantable medical device system for detecting cardiac conditions such the long-term ischemic heart disease, an occlusion of a coronary artery by a thrombus or an impending as a myocardial infarction. The implantable medical device (IMD) system includes a sensor... | 05/06/2008 |
| 7366569 | Non-invasive method and apparatus for cardiac pacemaker pacing parameter optimization and monitoring of cardiac dysfunction A plethysmogram signal is sensed from a patient and provided to a programmer device for monitoring the condition of the patient and for optimizing pacing parameters of a cardiac device implanted in the patient. The programmer device analyzes the plethysmogram signal... | 04/29/2008 |
| 7363077 | Adaptive timing interval control method for treating congestive heart failure A method of treating a heart with an implantable cardiac stimulation device involves transiently disturbing the steady state hemodynamic parameters by altering a cardiac cycle timing interval sufficient to reduce end diastolic volume for that cycle. The cardiac cycl... | 04/22/2008 |
| 7330758 | Heart monitoring device, system and method A heart monitoring device has a control circuit that derives an impedance value indicative of the impedance between different electrode surfaces. The control circuit determines and monitors a negative rate of change of the impedance value and determines whether the ... | 02/12/2008 |
| 7324844 | Implantable cardiac stimulation system and method for measuring atrioventricular conduction and adjusting atrioventricular hysteresis An implantable cardiac stimulation device and method measure atrioventricular conduction times and automatically adjust an atrioventricular delay time based on the measured conduction time values. ... | 01/29/2008 |
| 7320675 | Method and apparatus for modulating cellular metabolism during post-ischemia or heart failure A drug delivery system detects a cardiac condition indicative of a need for increasing a cardiac metabolic level and, in response, releases a drug into tissue or blood to shift a source of metabolically synthesized energy fueling cardiac contraction from fatty acid ... | 01/22/2008 |
| 7313434 | Impedance monitoring for detecting pulmonary edema and thoracic congestion An implantable medical device includes a housing for the implantable device that is sized for implantation in a chest region of a patient and includes a housing electrode. A left ventricular lead port is connectable to a proximal end of a lead having first and secon... | 12/25/2007 |
| 7310552 | Apparatus for indirectly stimulating the vagus nerve with an electrical field An apparatus for indirectly stimulating a vagus nerve of a patient includes electrodes positioned within the esophagus, trachea, or a jugular vein of a patient, on the neck of the patient, or in combinations of these locations. The apparatus further includes a means... | 12/18/2007 |
| 7305266 | Cardiac stimulation devices and methods for measuring impedances associated with the heart An exemplary method includes introducing current between a first pair of electrodes configured for placement internally in a patient, triggering a potential measurement between a second pair of electrodes configured for placement internally in a patient wherein comm... | 12/04/2007 |
| 7292887 | Apparatus and method for spatially and temporally distributing cardiac electrical stimulation A cardiac electro-stimulatory device and method for operating same in which stimulation pulses are distributed among a plurality of electrodes fixed at different sites of the myocardium in order to reduce myocardial hypertrophy brought about by repeated pacing at a ... | 11/06/2007 |
| 7277761 | Vagal stimulation for improving cardiac function in heart failure or CHF patients Exemplary methods for decreasing workload, maintaining or increasing cardiac output and/or achieving a desirable autonomic balance by stimulating one or more parasympathetic nerves. Various exemplary methods include delivering one or more stimulation pulses postinsp... | 10/02/2007 |
| 7274959 | System and method for detecting cardiac ischemia using an implantable medical device A technique is provided for detecting episodes of cardiac ischemia based on an examination of post-T-wave signal segments. Since cardiac ischemia is often a precursor to acute myocardial infarction (AMI) or ventricular fibrillation (VF), the technique thereby provid... | 09/25/2007 |
| 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 |
| 7260433 | Subcutaneous cardiac stimulation device providing anti-tachycardia pacing therapy and method An implantable subcutaneous cardiac device includes at least two subcutaneous electrodes adapted for placement external to a heart beneath the skin of a patient. The device further includes an arrhythmia detector that detects a sustained tachyarrhythmia of the heart... | 08/21/2007 |
| 7245968 | Implantable cardiac device providing rapid pacing T wave alternan pattern detection and method An implantable cardiac device that delivers electrical therapy to a patient's heart determines if a T wave alternan pattern of the patient's heart exists. The device includes a sensing circuit that generates an electrical signal including T waves representing paced ... | 07/17/2007 |
| 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 |
| 7236821 | Chronically-implanted device for sensing and therapy Systems, devices and methods are provided for providing sensing and therapy functions using a chronically-implanted device. According to one embodiment, the device includes a structure adapted to be chronically placed within a biosystem, and further includes sensing... | 06/26/2007 |
| 7228174 | Algorithm for the automatic determination of optimal AV an VV intervals Methods and devices for determining optimal Atrial to Ventricular (AV) pacing intervals and Ventricular to Ventricular (VV) delay intervals in order to optimize cardiac output. Impedance, preferably sub-threshold impedance, is measured across the heart at selected c... | 06/05/2007 |
| 7225022 | Method of optimizing patient outcome from cardiac resynchronization therapy A method of data management for optimizing the patient outcome from the provision of cardiac resynchronization therapy (CRT) is described. This method describes a process by which sets of dynamic cardiopulmonary dependent variables are measured during steady-state c... | 05/29/2007 |
| 7225015 | System and method for detecting cardiac ischemia based on T-waves using an implantable medical device A technique is provided for detecting episodes of cardiac ischemia based on an examination of the total energy of T-waves. Since cardiac ischemia is often a precursor to acute myocardial infarction (AMI) or ventricular fibrillation (VF), the technique thereby provid... | 05/29/2007 |
| 7218960 | System and method for detecting cardiac ischemia based on T-waves using an implantable medical device A technique is provided for detecting episodes of cardiac ischemia based on an examination of the total energy of T-waves. Since cardiac ischemia is often a precursor to acute myocardial infarction (AMI) or ventricular fibrillation (VF), the technique thereby provid... | 05/15/2007 |
| 7212862 | Cardiac stimulation device including sleep apnea prevention and treatment An implantable cardiac stimulation device comprises a physiologic sensor and one or more pulse generators. The physiologic sensor is capable of sensing a physiologic parameter. The pulse generators can generate cardiac pacing pulses with a timing based on the physio... | 05/01/2007 |
| 7209783 | Ablation stent for treating atrial fibrillation An apparatus and method for treating atrial fibrillation with ablation therapy in which a stent is deployed within a pulmonary vein and tissue surrounding the stent is ablated with radiofrequency energy to stop discharges from ectopic foci in the vein from reaching ... | 04/24/2007 |
| 7206636 | Pacing optimization based on changes in pulse amplitude and pulse amplitude variability A signal indicative of cardiac contractions of a patient's heart is produced, as the patient's heart is paced using different sets of pacing interval parameters. Measures of pulse amplitude are obtained from the signal. Pacing interval optimization is performed base... | 04/17/2007 |
| 7206634 | Method and apparatus for optimizing cardiac pumping performance A cardiac rhythm and function management device configured to automatically adjust stimulation parameters used in delivering cardiac resynchronization therapy. Mechanical contraction intervals are measured using appropriately placed accelerometers and compared with ... | 04/17/2007 |
| 7201733 | Drug delivery system for implantable cardiac device A drug delivery system incorporated into a cardiac device for delivering a dose of a drug to a patient upon detection of a particular medical condition. The cardiac device may be, for example, an implantable cardioverter/defibrillator, cardiac pacemaker, or combinat... | 04/10/2007 |
| 7200439 | Method and apparatus for enhancing cardiac pacing Methods, apparatus and systems for enhancing cardiac pacing generally provide for measuring at least one cardiac characteristic, calculating at least one cardiac performance parameter based on the measured characteristic(s), and adjusting at least one functional par... | 04/03/2007 |
| 7200431 | Implantable blood flow monitoring system An implantable blood flow monitoring system for providing synchronized blood vessel flow and myocardial wall contractility data to an external monitor independent of transcutaneous leads. Synchronized electrocardiogram data allows and provides comprehensive monitori... | 04/03/2007 |
| 7194307 | Pacing method and device for preserving native conduction system An implantable device for delivering cardiac pacing therapy in order to improve cardiac function is programmed to allow some amount of intrinsic activity to occur without otherwise the disturbing the pacing algorithm used to deliver therapy. Intrinsic cardiac cycles... | 03/20/2007 |
| 7191000 | Cardiac rhythm management system for edema A cardiac rhythm management system detects edema. In response to an episode of detected edema, it initiates or adjusts a cardiac resynchronization therapy and/or a cardiac contractility modulation (CCM) therapy. ... | 03/13/2007 |
| 7186219 | Calibration of a doppler velocimeter for stroke volume determination Doppler Velocimetry is a widely used method for estimating stroke volume (SV). The accuracy and reliability of its measurement however, is dependant on a) the correct assessment of the aortic valve cross-sectional area (CSA), and b) the max... | 03/06/2007 |
| 7186220 | Implantable devices and methods using frequency-domain analysis of thoracic signal This document describes, among other things, systems, devices, and methods that use frequency domain analysis of a thoracic signal. One example uses frequency domain analysis for discriminating between different pulmonary physiological states. Examples of breathing ... | 03/06/2007 |
| 7184821 | Monitoring thoracic fluid changes Changes in fluid volume in a thoracic region, such as the lung, are detected by internally injecting a current through the region, detecting an induced voltage on the skin of the patient, and calculating an impedance value. A method for performing such a measurement... | 02/27/2007 |
| 7181278 | Apparatus and method for ventricular rate regularization A cardiac rhythm management device which employs pacing therapy to regularize the ventricular rhythm. Such ventricular rate regularization may be employed within bradycardia pacemakers, ventricular resynchronization devices, or implantable cardioverter/defibrillator... | 02/20/2007 |
| 7177681 | Cardiac rhythm management system for edema A cardiac rhythm management system detects edema. In response to an episode of detected edema, it initiates or adjusts a cardiac resynchronization therapy and/or a cardiac contractility modulation (CCM) therapy. ... | 02/13/2007 |
| 7158830 | Method and apparatus for optimizing stroke volume during DDD resynchronization therapy using adjustable atrio-ventricular delays A pacing system for providing optimal hemodynamic cardiac function for parameters such as ventricular synchorny or contractility (peak left ventricle pressure change during systole or LV+dp/dt), or stroke volume (aortic pulse pressure) using system for calculating a... | 01/02/2007 |
